| /* |
| * Copyright 2012 Advanced Micro Devices, Inc. |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a |
| * copy of this software and associated documentation files (the "Software"), |
| * to deal in the Software without restriction, including without limitation |
| * on the rights to use, copy, modify, merge, publish, distribute, sub |
| * license, and/or sell copies of the Software, and to permit persons to whom |
| * the Software is furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice (including the next |
| * paragraph) shall be included in all copies or substantial portions of the |
| * Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL |
| * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM, |
| * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR |
| * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE |
| * USE OR OTHER DEALINGS IN THE SOFTWARE. |
| * |
| * Authors: |
| * Tom Stellard <thomas.stellard@amd.com> |
| * Michel Dänzer <michel.daenzer@amd.com> |
| * Christian König <christian.koenig@amd.com> |
| */ |
| |
| #include "gallivm/lp_bld_const.h" |
| #include "gallivm/lp_bld_gather.h" |
| #include "gallivm/lp_bld_intr.h" |
| #include "gallivm/lp_bld_logic.h" |
| #include "gallivm/lp_bld_arit.h" |
| #include "gallivm/lp_bld_flow.h" |
| #include "gallivm/lp_bld_misc.h" |
| #include "radeon/radeon_elf_util.h" |
| #include "util/u_memory.h" |
| #include "util/u_string.h" |
| #include "tgsi/tgsi_build.h" |
| #include "tgsi/tgsi_util.h" |
| #include "tgsi/tgsi_dump.h" |
| |
| #include "ac_llvm_util.h" |
| #include "si_shader_internal.h" |
| #include "si_pipe.h" |
| #include "sid.h" |
| |
| |
| static const char *scratch_rsrc_dword0_symbol = |
| "SCRATCH_RSRC_DWORD0"; |
| |
| static const char *scratch_rsrc_dword1_symbol = |
| "SCRATCH_RSRC_DWORD1"; |
| |
| struct si_shader_output_values |
| { |
| LLVMValueRef values[4]; |
| unsigned semantic_name; |
| unsigned semantic_index; |
| ubyte vertex_stream[4]; |
| }; |
| |
| static void si_init_shader_ctx(struct si_shader_context *ctx, |
| struct si_screen *sscreen, |
| struct si_shader *shader, |
| LLVMTargetMachineRef tm); |
| |
| static void si_llvm_emit_barrier(const struct lp_build_tgsi_action *action, |
| struct lp_build_tgsi_context *bld_base, |
| struct lp_build_emit_data *emit_data); |
| |
| static void si_dump_shader_key(unsigned shader, struct si_shader_key *key, |
| FILE *f); |
| |
| static void si_build_vs_prolog_function(struct si_shader_context *ctx, |
| union si_shader_part_key *key); |
| static void si_build_vs_epilog_function(struct si_shader_context *ctx, |
| union si_shader_part_key *key); |
| static void si_build_tcs_epilog_function(struct si_shader_context *ctx, |
| union si_shader_part_key *key); |
| static void si_build_ps_prolog_function(struct si_shader_context *ctx, |
| union si_shader_part_key *key); |
| static void si_build_ps_epilog_function(struct si_shader_context *ctx, |
| union si_shader_part_key *key); |
| |
| /* Ideally pass the sample mask input to the PS epilog as v13, which |
| * is its usual location, so that the shader doesn't have to add v_mov. |
| */ |
| #define PS_EPILOG_SAMPLEMASK_MIN_LOC 13 |
| |
| /* The VS location of the PrimitiveID input is the same in the epilog, |
| * so that the main shader part doesn't have to move it. |
| */ |
| #define VS_EPILOG_PRIMID_LOC 2 |
| |
| enum { |
| CONST_ADDR_SPACE = 2, |
| LOCAL_ADDR_SPACE = 3, |
| }; |
| |
| #define SENDMSG_GS 2 |
| #define SENDMSG_GS_DONE 3 |
| |
| #define SENDMSG_GS_OP_NOP (0 << 4) |
| #define SENDMSG_GS_OP_CUT (1 << 4) |
| #define SENDMSG_GS_OP_EMIT (2 << 4) |
| #define SENDMSG_GS_OP_EMIT_CUT (3 << 4) |
| |
| /** |
| * Returns a unique index for a semantic name and index. The index must be |
| * less than 64, so that a 64-bit bitmask of used inputs or outputs can be |
| * calculated. |
| */ |
| unsigned si_shader_io_get_unique_index(unsigned semantic_name, unsigned index) |
| { |
| switch (semantic_name) { |
| case TGSI_SEMANTIC_POSITION: |
| return 0; |
| case TGSI_SEMANTIC_PSIZE: |
| return 1; |
| case TGSI_SEMANTIC_CLIPDIST: |
| assert(index <= 1); |
| return 2 + index; |
| case TGSI_SEMANTIC_GENERIC: |
| if (index <= 63-4) |
| return 4 + index; |
| |
| assert(!"invalid generic index"); |
| return 0; |
| |
| /* patch indices are completely separate and thus start from 0 */ |
| case TGSI_SEMANTIC_TESSOUTER: |
| return 0; |
| case TGSI_SEMANTIC_TESSINNER: |
| return 1; |
| case TGSI_SEMANTIC_PATCH: |
| return 2 + index; |
| |
| default: |
| assert(!"invalid semantic name"); |
| return 0; |
| } |
| } |
| |
| unsigned si_shader_io_get_unique_index2(unsigned name, unsigned index) |
| { |
| switch (name) { |
| case TGSI_SEMANTIC_FOG: |
| return 0; |
| case TGSI_SEMANTIC_LAYER: |
| return 1; |
| case TGSI_SEMANTIC_VIEWPORT_INDEX: |
| return 2; |
| case TGSI_SEMANTIC_PRIMID: |
| return 3; |
| case TGSI_SEMANTIC_COLOR: /* these alias */ |
| case TGSI_SEMANTIC_BCOLOR: |
| return 4 + index; |
| case TGSI_SEMANTIC_TEXCOORD: |
| return 6 + index; |
| default: |
| assert(!"invalid semantic name"); |
| return 0; |
| } |
| } |
| |
| /** |
| * Get the value of a shader input parameter and extract a bitfield. |
| */ |
| static LLVMValueRef unpack_param(struct si_shader_context *ctx, |
| unsigned param, unsigned rshift, |
| unsigned bitwidth) |
| { |
| struct gallivm_state *gallivm = &ctx->gallivm; |
| LLVMValueRef value = LLVMGetParam(ctx->main_fn, |
| param); |
| |
| if (LLVMGetTypeKind(LLVMTypeOf(value)) == LLVMFloatTypeKind) |
| value = bitcast(&ctx->bld_base, |
| TGSI_TYPE_UNSIGNED, value); |
| |
| if (rshift) |
| value = LLVMBuildLShr(gallivm->builder, value, |
| lp_build_const_int32(gallivm, rshift), ""); |
| |
| if (rshift + bitwidth < 32) { |
| unsigned mask = (1 << bitwidth) - 1; |
| value = LLVMBuildAnd(gallivm->builder, value, |
| lp_build_const_int32(gallivm, mask), ""); |
| } |
| |
| return value; |
| } |
| |
| static LLVMValueRef get_rel_patch_id(struct si_shader_context *ctx) |
| { |
| switch (ctx->type) { |
| case PIPE_SHADER_TESS_CTRL: |
| return unpack_param(ctx, SI_PARAM_REL_IDS, 0, 8); |
| |
| case PIPE_SHADER_TESS_EVAL: |
| return LLVMGetParam(ctx->main_fn, |
| ctx->param_tes_rel_patch_id); |
| |
| default: |
| assert(0); |
| return NULL; |
| } |
| } |
| |
| /* Tessellation shaders pass outputs to the next shader using LDS. |
| * |
| * LS outputs = TCS inputs |
| * TCS outputs = TES inputs |
| * |
| * The LDS layout is: |
| * - TCS inputs for patch 0 |
| * - TCS inputs for patch 1 |
| * - TCS inputs for patch 2 = get_tcs_in_current_patch_offset (if RelPatchID==2) |
| * - ... |
| * - TCS outputs for patch 0 = get_tcs_out_patch0_offset |
| * - Per-patch TCS outputs for patch 0 = get_tcs_out_patch0_patch_data_offset |
| * - TCS outputs for patch 1 |
| * - Per-patch TCS outputs for patch 1 |
| * - TCS outputs for patch 2 = get_tcs_out_current_patch_offset (if RelPatchID==2) |
| * - Per-patch TCS outputs for patch 2 = get_tcs_out_current_patch_data_offset (if RelPatchID==2) |
| * - ... |
| * |
| * All three shaders VS(LS), TCS, TES share the same LDS space. |
| */ |
| |
| static LLVMValueRef |
| get_tcs_in_patch_stride(struct si_shader_context *ctx) |
| { |
| if (ctx->type == PIPE_SHADER_VERTEX) |
| return unpack_param(ctx, SI_PARAM_LS_OUT_LAYOUT, 0, 13); |
| else if (ctx->type == PIPE_SHADER_TESS_CTRL) |
| return unpack_param(ctx, SI_PARAM_TCS_IN_LAYOUT, 0, 13); |
| else { |
| assert(0); |
| return NULL; |
| } |
| } |
| |
| static LLVMValueRef |
| get_tcs_out_patch_stride(struct si_shader_context *ctx) |
| { |
| return unpack_param(ctx, SI_PARAM_TCS_OUT_LAYOUT, 0, 13); |
| } |
| |
| static LLVMValueRef |
| get_tcs_out_patch0_offset(struct si_shader_context *ctx) |
| { |
| return lp_build_mul_imm(&ctx->bld_base.uint_bld, |
| unpack_param(ctx, |
| SI_PARAM_TCS_OUT_OFFSETS, |
| 0, 16), |
| 4); |
| } |
| |
| static LLVMValueRef |
| get_tcs_out_patch0_patch_data_offset(struct si_shader_context *ctx) |
| { |
| return lp_build_mul_imm(&ctx->bld_base.uint_bld, |
| unpack_param(ctx, |
| SI_PARAM_TCS_OUT_OFFSETS, |
| 16, 16), |
| 4); |
| } |
| |
| static LLVMValueRef |
| get_tcs_in_current_patch_offset(struct si_shader_context *ctx) |
| { |
| struct gallivm_state *gallivm = &ctx->gallivm; |
| LLVMValueRef patch_stride = get_tcs_in_patch_stride(ctx); |
| LLVMValueRef rel_patch_id = get_rel_patch_id(ctx); |
| |
| return LLVMBuildMul(gallivm->builder, patch_stride, rel_patch_id, ""); |
| } |
| |
| static LLVMValueRef |
| get_tcs_out_current_patch_offset(struct si_shader_context *ctx) |
| { |
| struct gallivm_state *gallivm = &ctx->gallivm; |
| LLVMValueRef patch0_offset = get_tcs_out_patch0_offset(ctx); |
| LLVMValueRef patch_stride = get_tcs_out_patch_stride(ctx); |
| LLVMValueRef rel_patch_id = get_rel_patch_id(ctx); |
| |
| return LLVMBuildAdd(gallivm->builder, patch0_offset, |
| LLVMBuildMul(gallivm->builder, patch_stride, |
| rel_patch_id, ""), |
| ""); |
| } |
| |
| static LLVMValueRef |
| get_tcs_out_current_patch_data_offset(struct si_shader_context *ctx) |
| { |
| struct gallivm_state *gallivm = &ctx->gallivm; |
| LLVMValueRef patch0_patch_data_offset = |
| get_tcs_out_patch0_patch_data_offset(ctx); |
| LLVMValueRef patch_stride = get_tcs_out_patch_stride(ctx); |
| LLVMValueRef rel_patch_id = get_rel_patch_id(ctx); |
| |
| return LLVMBuildAdd(gallivm->builder, patch0_patch_data_offset, |
| LLVMBuildMul(gallivm->builder, patch_stride, |
| rel_patch_id, ""), |
| ""); |
| } |
| |
| static LLVMValueRef build_gep0(struct si_shader_context *ctx, |
| LLVMValueRef base_ptr, LLVMValueRef index) |
| { |
| LLVMValueRef indices[2] = { |
| LLVMConstInt(ctx->i32, 0, 0), |
| index, |
| }; |
| return LLVMBuildGEP(ctx->gallivm.builder, base_ptr, |
| indices, 2, ""); |
| } |
| |
| static void build_indexed_store(struct si_shader_context *ctx, |
| LLVMValueRef base_ptr, LLVMValueRef index, |
| LLVMValueRef value) |
| { |
| struct lp_build_tgsi_context *bld_base = &ctx->bld_base; |
| struct gallivm_state *gallivm = bld_base->base.gallivm; |
| |
| LLVMBuildStore(gallivm->builder, value, |
| build_gep0(ctx, base_ptr, index)); |
| } |
| |
| /** |
| * Build an LLVM bytecode indexed load using LLVMBuildGEP + LLVMBuildLoad. |
| * It's equivalent to doing a load from &base_ptr[index]. |
| * |
| * \param base_ptr Where the array starts. |
| * \param index The element index into the array. |
| * \param uniform Whether the base_ptr and index can be assumed to be |
| * dynamically uniform |
| */ |
| static LLVMValueRef build_indexed_load(struct si_shader_context *ctx, |
| LLVMValueRef base_ptr, LLVMValueRef index, |
| bool uniform) |
| { |
| struct lp_build_tgsi_context *bld_base = &ctx->bld_base; |
| struct gallivm_state *gallivm = bld_base->base.gallivm; |
| LLVMValueRef pointer; |
| |
| pointer = build_gep0(ctx, base_ptr, index); |
| if (uniform) |
| LLVMSetMetadata(pointer, ctx->uniform_md_kind, ctx->empty_md); |
| return LLVMBuildLoad(gallivm->builder, pointer, ""); |
| } |
| |
| /** |
| * Do a load from &base_ptr[index], but also add a flag that it's loading |
| * a constant from a dynamically uniform index. |
| */ |
| static LLVMValueRef build_indexed_load_const( |
| struct si_shader_context *ctx, |
| LLVMValueRef base_ptr, LLVMValueRef index) |
| { |
| LLVMValueRef result = build_indexed_load(ctx, base_ptr, index, true); |
| LLVMSetMetadata(result, ctx->invariant_load_md_kind, ctx->empty_md); |
| return result; |
| } |
| |
| static LLVMValueRef get_instance_index_for_fetch( |
| struct si_shader_context *radeon_bld, |
| unsigned param_start_instance, unsigned divisor) |
| { |
| struct si_shader_context *ctx = |
| si_shader_context(&radeon_bld->bld_base); |
| struct gallivm_state *gallivm = radeon_bld->bld_base.base.gallivm; |
| |
| LLVMValueRef result = LLVMGetParam(radeon_bld->main_fn, |
| ctx->param_instance_id); |
| |
| /* The division must be done before START_INSTANCE is added. */ |
| if (divisor > 1) |
| result = LLVMBuildUDiv(gallivm->builder, result, |
| lp_build_const_int32(gallivm, divisor), ""); |
| |
| return LLVMBuildAdd(gallivm->builder, result, |
| LLVMGetParam(radeon_bld->main_fn, param_start_instance), ""); |
| } |
| |
| static void declare_input_vs( |
| struct si_shader_context *ctx, |
| unsigned input_index, |
| const struct tgsi_full_declaration *decl, |
| LLVMValueRef out[4]) |
| { |
| struct lp_build_context *base = &ctx->bld_base.base; |
| struct gallivm_state *gallivm = base->gallivm; |
| |
| unsigned chan; |
| unsigned fix_fetch; |
| |
| LLVMValueRef t_list_ptr; |
| LLVMValueRef t_offset; |
| LLVMValueRef t_list; |
| LLVMValueRef attribute_offset; |
| LLVMValueRef buffer_index; |
| LLVMValueRef args[3]; |
| LLVMValueRef input; |
| |
| /* Load the T list */ |
| t_list_ptr = LLVMGetParam(ctx->main_fn, SI_PARAM_VERTEX_BUFFERS); |
| |
| t_offset = lp_build_const_int32(gallivm, input_index); |
| |
| t_list = build_indexed_load_const(ctx, t_list_ptr, t_offset); |
| |
| /* Build the attribute offset */ |
| attribute_offset = lp_build_const_int32(gallivm, 0); |
| |
| buffer_index = LLVMGetParam(ctx->main_fn, |
| ctx->param_vertex_index0 + |
| input_index); |
| |
| args[0] = t_list; |
| args[1] = attribute_offset; |
| args[2] = buffer_index; |
| input = lp_build_intrinsic(gallivm->builder, |
| "llvm.SI.vs.load.input", ctx->v4f32, args, 3, |
| LP_FUNC_ATTR_READNONE); |
| |
| /* Break up the vec4 into individual components */ |
| for (chan = 0; chan < 4; chan++) { |
| LLVMValueRef llvm_chan = lp_build_const_int32(gallivm, chan); |
| out[chan] = LLVMBuildExtractElement(gallivm->builder, |
| input, llvm_chan, ""); |
| } |
| |
| fix_fetch = (ctx->shader->key.mono.vs.fix_fetch >> (4 * input_index)) & 0xf; |
| |
| switch (fix_fetch) { |
| case SI_FIX_FETCH_A2_SNORM: |
| case SI_FIX_FETCH_A2_SSCALED: |
| case SI_FIX_FETCH_A2_SINT: { |
| /* The hardware returns an unsigned value; convert it to a |
| * signed one. |
| */ |
| LLVMValueRef tmp = out[3]; |
| LLVMValueRef c30 = LLVMConstInt(ctx->i32, 30, 0); |
| |
| /* First, recover the sign-extended signed integer value. */ |
| if (fix_fetch == SI_FIX_FETCH_A2_SSCALED) |
| tmp = LLVMBuildFPToUI(gallivm->builder, tmp, ctx->i32, ""); |
| else |
| tmp = LLVMBuildBitCast(gallivm->builder, tmp, ctx->i32, ""); |
| |
| /* For the integer-like cases, do a natural sign extension. |
| * |
| * For the SNORM case, the values are 0.0, 0.333, 0.666, 1.0 |
| * and happen to contain 0, 1, 2, 3 as the two LSBs of the |
| * exponent. |
| */ |
| tmp = LLVMBuildShl(gallivm->builder, tmp, |
| fix_fetch == SI_FIX_FETCH_A2_SNORM ? |
| LLVMConstInt(ctx->i32, 7, 0) : c30, ""); |
| tmp = LLVMBuildAShr(gallivm->builder, tmp, c30, ""); |
| |
| /* Convert back to the right type. */ |
| if (fix_fetch == SI_FIX_FETCH_A2_SNORM) { |
| LLVMValueRef clamp; |
| LLVMValueRef neg_one = LLVMConstReal(ctx->f32, -1.0); |
| tmp = LLVMBuildSIToFP(gallivm->builder, tmp, ctx->f32, ""); |
| clamp = LLVMBuildFCmp(gallivm->builder, LLVMRealULT, tmp, neg_one, ""); |
| tmp = LLVMBuildSelect(gallivm->builder, clamp, neg_one, tmp, ""); |
| } else if (fix_fetch == SI_FIX_FETCH_A2_SSCALED) { |
| tmp = LLVMBuildSIToFP(gallivm->builder, tmp, ctx->f32, ""); |
| } |
| |
| out[3] = tmp; |
| break; |
| } |
| case SI_FIX_FETCH_RGBA_32_UNORM: |
| case SI_FIX_FETCH_RGBX_32_UNORM: |
| for (chan = 0; chan < 4; chan++) { |
| out[chan] = LLVMBuildBitCast(gallivm->builder, out[chan], |
| ctx->i32, ""); |
| out[chan] = LLVMBuildUIToFP(gallivm->builder, |
| out[chan], ctx->f32, ""); |
| out[chan] = LLVMBuildFMul(gallivm->builder, out[chan], |
| LLVMConstReal(ctx->f32, 1.0 / UINT_MAX), ""); |
| } |
| /* RGBX UINT returns 1 in alpha, which would be rounded to 0 by normalizing. */ |
| if (fix_fetch == SI_FIX_FETCH_RGBX_32_UNORM) |
| out[3] = LLVMConstReal(ctx->f32, 1); |
| break; |
| case SI_FIX_FETCH_RGBA_32_SNORM: |
| case SI_FIX_FETCH_RGBX_32_SNORM: |
| case SI_FIX_FETCH_RGBA_32_FIXED: |
| case SI_FIX_FETCH_RGBX_32_FIXED: { |
| double scale; |
| if (fix_fetch >= SI_FIX_FETCH_RGBA_32_FIXED) |
| scale = 1.0 / 0x10000; |
| else |
| scale = 1.0 / INT_MAX; |
| |
| for (chan = 0; chan < 4; chan++) { |
| out[chan] = LLVMBuildBitCast(gallivm->builder, out[chan], |
| ctx->i32, ""); |
| out[chan] = LLVMBuildSIToFP(gallivm->builder, |
| out[chan], ctx->f32, ""); |
| out[chan] = LLVMBuildFMul(gallivm->builder, out[chan], |
| LLVMConstReal(ctx->f32, scale), ""); |
| } |
| /* RGBX SINT returns 1 in alpha, which would be rounded to 0 by normalizing. */ |
| if (fix_fetch == SI_FIX_FETCH_RGBX_32_SNORM || |
| fix_fetch == SI_FIX_FETCH_RGBX_32_FIXED) |
| out[3] = LLVMConstReal(ctx->f32, 1); |
| break; |
| } |
| case SI_FIX_FETCH_RGBA_32_USCALED: |
| for (chan = 0; chan < 4; chan++) { |
| out[chan] = LLVMBuildBitCast(gallivm->builder, out[chan], |
| ctx->i32, ""); |
| out[chan] = LLVMBuildUIToFP(gallivm->builder, |
| out[chan], ctx->f32, ""); |
| } |
| break; |
| case SI_FIX_FETCH_RGBA_32_SSCALED: |
| for (chan = 0; chan < 4; chan++) { |
| out[chan] = LLVMBuildBitCast(gallivm->builder, out[chan], |
| ctx->i32, ""); |
| out[chan] = LLVMBuildSIToFP(gallivm->builder, |
| out[chan], ctx->f32, ""); |
| } |
| break; |
| } |
| } |
| |
| static LLVMValueRef get_primitive_id(struct lp_build_tgsi_context *bld_base, |
| unsigned swizzle) |
| { |
| struct si_shader_context *ctx = si_shader_context(bld_base); |
| |
| if (swizzle > 0) |
| return bld_base->uint_bld.zero; |
| |
| switch (ctx->type) { |
| case PIPE_SHADER_VERTEX: |
| return LLVMGetParam(ctx->main_fn, |
| ctx->param_vs_prim_id); |
| case PIPE_SHADER_TESS_CTRL: |
| return LLVMGetParam(ctx->main_fn, |
| SI_PARAM_PATCH_ID); |
| case PIPE_SHADER_TESS_EVAL: |
| return LLVMGetParam(ctx->main_fn, |
| ctx->param_tes_patch_id); |
| case PIPE_SHADER_GEOMETRY: |
| return LLVMGetParam(ctx->main_fn, |
| SI_PARAM_PRIMITIVE_ID); |
| default: |
| assert(0); |
| return bld_base->uint_bld.zero; |
| } |
| } |
| |
| /** |
| * Return the value of tgsi_ind_register for indexing. |
| * This is the indirect index with the constant offset added to it. |
| */ |
| static LLVMValueRef get_indirect_index(struct si_shader_context *ctx, |
| const struct tgsi_ind_register *ind, |
| int rel_index) |
| { |
| struct gallivm_state *gallivm = ctx->bld_base.base.gallivm; |
| LLVMValueRef result; |
| |
| result = ctx->addrs[ind->Index][ind->Swizzle]; |
| result = LLVMBuildLoad(gallivm->builder, result, ""); |
| result = LLVMBuildAdd(gallivm->builder, result, |
| lp_build_const_int32(gallivm, rel_index), ""); |
| return result; |
| } |
| |
| /** |
| * Like get_indirect_index, but restricts the return value to a (possibly |
| * undefined) value inside [0..num). |
| */ |
| static LLVMValueRef get_bounded_indirect_index(struct si_shader_context *ctx, |
| const struct tgsi_ind_register *ind, |
| int rel_index, unsigned num) |
| { |
| LLVMValueRef result = get_indirect_index(ctx, ind, rel_index); |
| |
| /* LLVM 3.8: If indirect resource indexing is used: |
| * - SI & CIK hang |
| * - VI crashes |
| */ |
| if (HAVE_LLVM <= 0x0308) |
| return LLVMGetUndef(ctx->i32); |
| |
| return si_llvm_bound_index(ctx, result, num); |
| } |
| |
| |
| /** |
| * Calculate a dword address given an input or output register and a stride. |
| */ |
| static LLVMValueRef get_dw_address(struct si_shader_context *ctx, |
| const struct tgsi_full_dst_register *dst, |
| const struct tgsi_full_src_register *src, |
| LLVMValueRef vertex_dw_stride, |
| LLVMValueRef base_addr) |
| { |
| struct gallivm_state *gallivm = ctx->bld_base.base.gallivm; |
| struct tgsi_shader_info *info = &ctx->shader->selector->info; |
| ubyte *name, *index, *array_first; |
| int first, param; |
| struct tgsi_full_dst_register reg; |
| |
| /* Set the register description. The address computation is the same |
| * for sources and destinations. */ |
| if (src) { |
| reg.Register.File = src->Register.File; |
| reg.Register.Index = src->Register.Index; |
| reg.Register.Indirect = src->Register.Indirect; |
| reg.Register.Dimension = src->Register.Dimension; |
| reg.Indirect = src->Indirect; |
| reg.Dimension = src->Dimension; |
| reg.DimIndirect = src->DimIndirect; |
| } else |
| reg = *dst; |
| |
| /* If the register is 2-dimensional (e.g. an array of vertices |
| * in a primitive), calculate the base address of the vertex. */ |
| if (reg.Register.Dimension) { |
| LLVMValueRef index; |
| |
| if (reg.Dimension.Indirect) |
| index = get_indirect_index(ctx, ®.DimIndirect, |
| reg.Dimension.Index); |
| else |
| index = lp_build_const_int32(gallivm, reg.Dimension.Index); |
| |
| base_addr = LLVMBuildAdd(gallivm->builder, base_addr, |
| LLVMBuildMul(gallivm->builder, index, |
| vertex_dw_stride, ""), ""); |
| } |
| |
| /* Get information about the register. */ |
| if (reg.Register.File == TGSI_FILE_INPUT) { |
| name = info->input_semantic_name; |
| index = info->input_semantic_index; |
| array_first = info->input_array_first; |
| } else if (reg.Register.File == TGSI_FILE_OUTPUT) { |
| name = info->output_semantic_name; |
| index = info->output_semantic_index; |
| array_first = info->output_array_first; |
| } else { |
| assert(0); |
| return NULL; |
| } |
| |
| if (reg.Register.Indirect) { |
| /* Add the relative address of the element. */ |
| LLVMValueRef ind_index; |
| |
| if (reg.Indirect.ArrayID) |
| first = array_first[reg.Indirect.ArrayID]; |
| else |
| first = reg.Register.Index; |
| |
| ind_index = get_indirect_index(ctx, ®.Indirect, |
| reg.Register.Index - first); |
| |
| base_addr = LLVMBuildAdd(gallivm->builder, base_addr, |
| LLVMBuildMul(gallivm->builder, ind_index, |
| lp_build_const_int32(gallivm, 4), ""), ""); |
| |
| param = si_shader_io_get_unique_index(name[first], index[first]); |
| } else { |
| param = si_shader_io_get_unique_index(name[reg.Register.Index], |
| index[reg.Register.Index]); |
| } |
| |
| /* Add the base address of the element. */ |
| return LLVMBuildAdd(gallivm->builder, base_addr, |
| lp_build_const_int32(gallivm, param * 4), ""); |
| } |
| |
| /* The offchip buffer layout for TCS->TES is |
| * |
| * - attribute 0 of patch 0 vertex 0 |
| * - attribute 0 of patch 0 vertex 1 |
| * - attribute 0 of patch 0 vertex 2 |
| * ... |
| * - attribute 0 of patch 1 vertex 0 |
| * - attribute 0 of patch 1 vertex 1 |
| * ... |
| * - attribute 1 of patch 0 vertex 0 |
| * - attribute 1 of patch 0 vertex 1 |
| * ... |
| * - per patch attribute 0 of patch 0 |
| * - per patch attribute 0 of patch 1 |
| * ... |
| * |
| * Note that every attribute has 4 components. |
| */ |
| static LLVMValueRef get_tcs_tes_buffer_address(struct si_shader_context *ctx, |
| LLVMValueRef vertex_index, |
| LLVMValueRef param_index) |
| { |
| struct gallivm_state *gallivm = ctx->bld_base.base.gallivm; |
| LLVMValueRef base_addr, vertices_per_patch, num_patches, total_vertices; |
| LLVMValueRef param_stride, constant16; |
| |
| vertices_per_patch = unpack_param(ctx, SI_PARAM_TCS_OFFCHIP_LAYOUT, 9, 6); |
| num_patches = unpack_param(ctx, SI_PARAM_TCS_OFFCHIP_LAYOUT, 0, 9); |
| total_vertices = LLVMBuildMul(gallivm->builder, vertices_per_patch, |
| num_patches, ""); |
| |
| constant16 = lp_build_const_int32(gallivm, 16); |
| if (vertex_index) { |
| base_addr = LLVMBuildMul(gallivm->builder, get_rel_patch_id(ctx), |
| vertices_per_patch, ""); |
| |
| base_addr = LLVMBuildAdd(gallivm->builder, base_addr, |
| vertex_index, ""); |
| |
| param_stride = total_vertices; |
| } else { |
| base_addr = get_rel_patch_id(ctx); |
| param_stride = num_patches; |
| } |
| |
| base_addr = LLVMBuildAdd(gallivm->builder, base_addr, |
| LLVMBuildMul(gallivm->builder, param_index, |
| param_stride, ""), ""); |
| |
| base_addr = LLVMBuildMul(gallivm->builder, base_addr, constant16, ""); |
| |
| if (!vertex_index) { |
| LLVMValueRef patch_data_offset = |
| unpack_param(ctx, SI_PARAM_TCS_OFFCHIP_LAYOUT, 16, 16); |
| |
| base_addr = LLVMBuildAdd(gallivm->builder, base_addr, |
| patch_data_offset, ""); |
| } |
| return base_addr; |
| } |
| |
| static LLVMValueRef get_tcs_tes_buffer_address_from_reg( |
| struct si_shader_context *ctx, |
| const struct tgsi_full_dst_register *dst, |
| const struct tgsi_full_src_register *src) |
| { |
| struct gallivm_state *gallivm = ctx->bld_base.base.gallivm; |
| struct tgsi_shader_info *info = &ctx->shader->selector->info; |
| ubyte *name, *index, *array_first; |
| struct tgsi_full_src_register reg; |
| LLVMValueRef vertex_index = NULL; |
| LLVMValueRef param_index = NULL; |
| unsigned param_index_base, param_base; |
| |
| reg = src ? *src : tgsi_full_src_register_from_dst(dst); |
| |
| if (reg.Register.Dimension) { |
| |
| if (reg.Dimension.Indirect) |
| vertex_index = get_indirect_index(ctx, ®.DimIndirect, |
| reg.Dimension.Index); |
| else |
| vertex_index = lp_build_const_int32(gallivm, |
| reg.Dimension.Index); |
| } |
| |
| /* Get information about the register. */ |
| if (reg.Register.File == TGSI_FILE_INPUT) { |
| name = info->input_semantic_name; |
| index = info->input_semantic_index; |
| array_first = info->input_array_first; |
| } else if (reg.Register.File == TGSI_FILE_OUTPUT) { |
| name = info->output_semantic_name; |
| index = info->output_semantic_index; |
| array_first = info->output_array_first; |
| } else { |
| assert(0); |
| return NULL; |
| } |
| |
| if (reg.Register.Indirect) { |
| if (reg.Indirect.ArrayID) |
| param_base = array_first[reg.Indirect.ArrayID]; |
| else |
| param_base = reg.Register.Index; |
| |
| param_index = get_indirect_index(ctx, ®.Indirect, |
| reg.Register.Index - param_base); |
| |
| } else { |
| param_base = reg.Register.Index; |
| param_index = lp_build_const_int32(gallivm, 0); |
| } |
| |
| param_index_base = si_shader_io_get_unique_index(name[param_base], |
| index[param_base]); |
| |
| param_index = LLVMBuildAdd(gallivm->builder, param_index, |
| lp_build_const_int32(gallivm, param_index_base), |
| ""); |
| |
| return get_tcs_tes_buffer_address(ctx, vertex_index, param_index); |
| } |
| |
| /* TBUFFER_STORE_FORMAT_{X,XY,XYZ,XYZW} <- the suffix is selected by num_channels=1..4. |
| * The type of vdata must be one of i32 (num_channels=1), v2i32 (num_channels=2), |
| * or v4i32 (num_channels=3,4). */ |
| static void build_tbuffer_store(struct si_shader_context *ctx, |
| LLVMValueRef rsrc, |
| LLVMValueRef vdata, |
| unsigned num_channels, |
| LLVMValueRef vaddr, |
| LLVMValueRef soffset, |
| unsigned inst_offset, |
| unsigned dfmt, |
| unsigned nfmt, |
| unsigned offen, |
| unsigned idxen, |
| unsigned glc, |
| unsigned slc, |
| unsigned tfe) |
| { |
| struct gallivm_state *gallivm = &ctx->gallivm; |
| LLVMValueRef args[] = { |
| rsrc, |
| vdata, |
| LLVMConstInt(ctx->i32, num_channels, 0), |
| vaddr, |
| soffset, |
| LLVMConstInt(ctx->i32, inst_offset, 0), |
| LLVMConstInt(ctx->i32, dfmt, 0), |
| LLVMConstInt(ctx->i32, nfmt, 0), |
| LLVMConstInt(ctx->i32, offen, 0), |
| LLVMConstInt(ctx->i32, idxen, 0), |
| LLVMConstInt(ctx->i32, glc, 0), |
| LLVMConstInt(ctx->i32, slc, 0), |
| LLVMConstInt(ctx->i32, tfe, 0) |
| }; |
| |
| /* The instruction offset field has 12 bits */ |
| assert(offen || inst_offset < (1 << 12)); |
| |
| /* The intrinsic is overloaded, we need to add a type suffix for overloading to work. */ |
| unsigned func = CLAMP(num_channels, 1, 3) - 1; |
| const char *types[] = {"i32", "v2i32", "v4i32"}; |
| char name[256]; |
| snprintf(name, sizeof(name), "llvm.SI.tbuffer.store.%s", types[func]); |
| |
| lp_build_intrinsic(gallivm->builder, name, ctx->voidt, |
| args, ARRAY_SIZE(args), 0); |
| } |
| |
| static void build_tbuffer_store_dwords(struct si_shader_context *ctx, |
| LLVMValueRef rsrc, |
| LLVMValueRef vdata, |
| unsigned num_channels, |
| LLVMValueRef vaddr, |
| LLVMValueRef soffset, |
| unsigned inst_offset) |
| { |
| static unsigned dfmt[] = { |
| V_008F0C_BUF_DATA_FORMAT_32, |
| V_008F0C_BUF_DATA_FORMAT_32_32, |
| V_008F0C_BUF_DATA_FORMAT_32_32_32, |
| V_008F0C_BUF_DATA_FORMAT_32_32_32_32 |
| }; |
| assert(num_channels >= 1 && num_channels <= 4); |
| |
| build_tbuffer_store(ctx, rsrc, vdata, num_channels, vaddr, soffset, |
| inst_offset, dfmt[num_channels-1], |
| V_008F0C_BUF_NUM_FORMAT_UINT, 1, 0, 1, 1, 0); |
| } |
| |
| static LLVMValueRef build_buffer_load(struct si_shader_context *ctx, |
| LLVMValueRef rsrc, |
| int num_channels, |
| LLVMValueRef vindex, |
| LLVMValueRef voffset, |
| LLVMValueRef soffset, |
| unsigned inst_offset, |
| unsigned glc, |
| unsigned slc) |
| { |
| struct gallivm_state *gallivm = &ctx->gallivm; |
| unsigned func = CLAMP(num_channels, 1, 3) - 1; |
| |
| if (HAVE_LLVM >= 0x309) { |
| LLVMValueRef args[] = { |
| LLVMBuildBitCast(gallivm->builder, rsrc, ctx->v4i32, ""), |
| vindex ? vindex : LLVMConstInt(ctx->i32, 0, 0), |
| LLVMConstInt(ctx->i32, inst_offset, 0), |
| LLVMConstInt(ctx->i1, glc, 0), |
| LLVMConstInt(ctx->i1, slc, 0) |
| }; |
| |
| LLVMTypeRef types[] = {ctx->f32, LLVMVectorType(ctx->f32, 2), |
| ctx->v4f32}; |
| const char *type_names[] = {"f32", "v2f32", "v4f32"}; |
| char name[256]; |
| |
| if (voffset) { |
| args[2] = LLVMBuildAdd(gallivm->builder, args[2], voffset, |
| ""); |
| } |
| |
| if (soffset) { |
| args[2] = LLVMBuildAdd(gallivm->builder, args[2], soffset, |
| ""); |
| } |
| |
| snprintf(name, sizeof(name), "llvm.amdgcn.buffer.load.%s", |
| type_names[func]); |
| |
| return lp_build_intrinsic(gallivm->builder, name, types[func], args, |
| ARRAY_SIZE(args), LP_FUNC_ATTR_READONLY); |
| } else { |
| LLVMValueRef args[] = { |
| LLVMBuildBitCast(gallivm->builder, rsrc, ctx->v16i8, ""), |
| voffset ? voffset : vindex, |
| soffset, |
| LLVMConstInt(ctx->i32, inst_offset, 0), |
| LLVMConstInt(ctx->i32, voffset ? 1 : 0, 0), // offen |
| LLVMConstInt(ctx->i32, vindex ? 1 : 0, 0), //idxen |
| LLVMConstInt(ctx->i32, glc, 0), |
| LLVMConstInt(ctx->i32, slc, 0), |
| LLVMConstInt(ctx->i32, 0, 0), // TFE |
| }; |
| |
| LLVMTypeRef types[] = {ctx->i32, LLVMVectorType(ctx->i32, 2), |
| ctx->v4i32}; |
| const char *type_names[] = {"i32", "v2i32", "v4i32"}; |
| const char *arg_type = "i32"; |
| char name[256]; |
| |
| if (voffset && vindex) { |
| LLVMValueRef vaddr[] = {vindex, voffset}; |
| |
| arg_type = "v2i32"; |
| args[1] = lp_build_gather_values(gallivm, vaddr, 2); |
| } |
| |
| snprintf(name, sizeof(name), "llvm.SI.buffer.load.dword.%s.%s", |
| type_names[func], arg_type); |
| |
| return lp_build_intrinsic(gallivm->builder, name, types[func], args, |
| ARRAY_SIZE(args), LP_FUNC_ATTR_READONLY); |
| } |
| } |
| |
| static LLVMValueRef buffer_load(struct lp_build_tgsi_context *bld_base, |
| enum tgsi_opcode_type type, unsigned swizzle, |
| LLVMValueRef buffer, LLVMValueRef offset, |
| LLVMValueRef base) |
| { |
| struct si_shader_context *ctx = si_shader_context(bld_base); |
| struct gallivm_state *gallivm = bld_base->base.gallivm; |
| LLVMValueRef value, value2; |
| LLVMTypeRef llvm_type = tgsi2llvmtype(bld_base, type); |
| LLVMTypeRef vec_type = LLVMVectorType(llvm_type, 4); |
| |
| if (swizzle == ~0) { |
| value = build_buffer_load(ctx, buffer, 4, NULL, base, offset, |
| 0, 1, 0); |
| |
| return LLVMBuildBitCast(gallivm->builder, value, vec_type, ""); |
| } |
| |
| if (!tgsi_type_is_64bit(type)) { |
| value = build_buffer_load(ctx, buffer, 4, NULL, base, offset, |
| 0, 1, 0); |
| |
| value = LLVMBuildBitCast(gallivm->builder, value, vec_type, ""); |
| return LLVMBuildExtractElement(gallivm->builder, value, |
| lp_build_const_int32(gallivm, swizzle), ""); |
| } |
| |
| value = build_buffer_load(ctx, buffer, 1, NULL, base, offset, |
| swizzle * 4, 1, 0); |
| |
| value2 = build_buffer_load(ctx, buffer, 1, NULL, base, offset, |
| swizzle * 4 + 4, 1, 0); |
| |
| return si_llvm_emit_fetch_64bit(bld_base, type, value, value2); |
| } |
| |
| /** |
| * Load from LDS. |
| * |
| * \param type output value type |
| * \param swizzle offset (typically 0..3); it can be ~0, which loads a vec4 |
| * \param dw_addr address in dwords |
| */ |
| static LLVMValueRef lds_load(struct lp_build_tgsi_context *bld_base, |
| enum tgsi_opcode_type type, unsigned swizzle, |
| LLVMValueRef dw_addr) |
| { |
| struct si_shader_context *ctx = si_shader_context(bld_base); |
| struct gallivm_state *gallivm = bld_base->base.gallivm; |
| LLVMValueRef value; |
| |
| if (swizzle == ~0) { |
| LLVMValueRef values[TGSI_NUM_CHANNELS]; |
| |
| for (unsigned chan = 0; chan < TGSI_NUM_CHANNELS; chan++) |
| values[chan] = lds_load(bld_base, type, chan, dw_addr); |
| |
| return lp_build_gather_values(bld_base->base.gallivm, values, |
| TGSI_NUM_CHANNELS); |
| } |
| |
| dw_addr = lp_build_add(&bld_base->uint_bld, dw_addr, |
| lp_build_const_int32(gallivm, swizzle)); |
| |
| value = build_indexed_load(ctx, ctx->lds, dw_addr, false); |
| if (tgsi_type_is_64bit(type)) { |
| LLVMValueRef value2; |
| dw_addr = lp_build_add(&bld_base->uint_bld, dw_addr, |
| lp_build_const_int32(gallivm, 1)); |
| value2 = build_indexed_load(ctx, ctx->lds, dw_addr, false); |
| return si_llvm_emit_fetch_64bit(bld_base, type, value, value2); |
| } |
| |
| return LLVMBuildBitCast(gallivm->builder, value, |
| tgsi2llvmtype(bld_base, type), ""); |
| } |
| |
| /** |
| * Store to LDS. |
| * |
| * \param swizzle offset (typically 0..3) |
| * \param dw_addr address in dwords |
| * \param value value to store |
| */ |
| static void lds_store(struct lp_build_tgsi_context *bld_base, |
| unsigned swizzle, LLVMValueRef dw_addr, |
| LLVMValueRef value) |
| { |
| struct si_shader_context *ctx = si_shader_context(bld_base); |
| struct gallivm_state *gallivm = bld_base->base.gallivm; |
| |
| dw_addr = lp_build_add(&bld_base->uint_bld, dw_addr, |
| lp_build_const_int32(gallivm, swizzle)); |
| |
| value = LLVMBuildBitCast(gallivm->builder, value, ctx->i32, ""); |
| build_indexed_store(ctx, ctx->lds, |
| dw_addr, value); |
| } |
| |
| static LLVMValueRef fetch_input_tcs( |
| struct lp_build_tgsi_context *bld_base, |
| const struct tgsi_full_src_register *reg, |
| enum tgsi_opcode_type type, unsigned swizzle) |
| { |
| struct si_shader_context *ctx = si_shader_context(bld_base); |
| LLVMValueRef dw_addr, stride; |
| |
| stride = unpack_param(ctx, SI_PARAM_TCS_IN_LAYOUT, 13, 8); |
| dw_addr = get_tcs_in_current_patch_offset(ctx); |
| dw_addr = get_dw_address(ctx, NULL, reg, stride, dw_addr); |
| |
| return lds_load(bld_base, type, swizzle, dw_addr); |
| } |
| |
| static LLVMValueRef fetch_output_tcs( |
| struct lp_build_tgsi_context *bld_base, |
| const struct tgsi_full_src_register *reg, |
| enum tgsi_opcode_type type, unsigned swizzle) |
| { |
| struct si_shader_context *ctx = si_shader_context(bld_base); |
| LLVMValueRef dw_addr, stride; |
| |
| if (reg->Register.Dimension) { |
| stride = unpack_param(ctx, SI_PARAM_TCS_OUT_LAYOUT, 13, 8); |
| dw_addr = get_tcs_out_current_patch_offset(ctx); |
| dw_addr = get_dw_address(ctx, NULL, reg, stride, dw_addr); |
| } else { |
| dw_addr = get_tcs_out_current_patch_data_offset(ctx); |
| dw_addr = get_dw_address(ctx, NULL, reg, NULL, dw_addr); |
| } |
| |
| return lds_load(bld_base, type, swizzle, dw_addr); |
| } |
| |
| static LLVMValueRef fetch_input_tes( |
| struct lp_build_tgsi_context *bld_base, |
| const struct tgsi_full_src_register *reg, |
| enum tgsi_opcode_type type, unsigned swizzle) |
| { |
| struct si_shader_context *ctx = si_shader_context(bld_base); |
| struct gallivm_state *gallivm = bld_base->base.gallivm; |
| LLVMValueRef rw_buffers, buffer, base, addr; |
| |
| rw_buffers = LLVMGetParam(ctx->main_fn, |
| SI_PARAM_RW_BUFFERS); |
| buffer = build_indexed_load_const(ctx, rw_buffers, |
| lp_build_const_int32(gallivm, SI_HS_RING_TESS_OFFCHIP)); |
| |
| base = LLVMGetParam(ctx->main_fn, ctx->param_oc_lds); |
| addr = get_tcs_tes_buffer_address_from_reg(ctx, NULL, reg); |
| |
| return buffer_load(bld_base, type, swizzle, buffer, base, addr); |
| } |
| |
| static void store_output_tcs(struct lp_build_tgsi_context *bld_base, |
| const struct tgsi_full_instruction *inst, |
| const struct tgsi_opcode_info *info, |
| LLVMValueRef dst[4]) |
| { |
| struct si_shader_context *ctx = si_shader_context(bld_base); |
| struct gallivm_state *gallivm = bld_base->base.gallivm; |
| const struct tgsi_full_dst_register *reg = &inst->Dst[0]; |
| unsigned chan_index; |
| LLVMValueRef dw_addr, stride; |
| LLVMValueRef rw_buffers, buffer, base, buf_addr; |
| LLVMValueRef values[4]; |
| |
| /* Only handle per-patch and per-vertex outputs here. |
| * Vectors will be lowered to scalars and this function will be called again. |
| */ |
| if (reg->Register.File != TGSI_FILE_OUTPUT || |
| (dst[0] && LLVMGetTypeKind(LLVMTypeOf(dst[0])) == LLVMVectorTypeKind)) { |
| si_llvm_emit_store(bld_base, inst, info, dst); |
| return; |
| } |
| |
| if (reg->Register.Dimension) { |
| stride = unpack_param(ctx, SI_PARAM_TCS_OUT_LAYOUT, 13, 8); |
| dw_addr = get_tcs_out_current_patch_offset(ctx); |
| dw_addr = get_dw_address(ctx, reg, NULL, stride, dw_addr); |
| } else { |
| dw_addr = get_tcs_out_current_patch_data_offset(ctx); |
| dw_addr = get_dw_address(ctx, reg, NULL, NULL, dw_addr); |
| } |
| |
| rw_buffers = LLVMGetParam(ctx->main_fn, |
| SI_PARAM_RW_BUFFERS); |
| buffer = build_indexed_load_const(ctx, rw_buffers, |
| lp_build_const_int32(gallivm, SI_HS_RING_TESS_OFFCHIP)); |
| |
| base = LLVMGetParam(ctx->main_fn, ctx->param_oc_lds); |
| buf_addr = get_tcs_tes_buffer_address_from_reg(ctx, reg, NULL); |
| |
| |
| TGSI_FOR_EACH_DST0_ENABLED_CHANNEL(inst, chan_index) { |
| LLVMValueRef value = dst[chan_index]; |
| |
| if (inst->Instruction.Saturate) |
| value = si_llvm_saturate(bld_base, value); |
| |
| lds_store(bld_base, chan_index, dw_addr, value); |
| |
| value = LLVMBuildBitCast(gallivm->builder, value, ctx->i32, ""); |
| values[chan_index] = value; |
| |
| if (inst->Dst[0].Register.WriteMask != 0xF) { |
| build_tbuffer_store_dwords(ctx, buffer, value, 1, |
| buf_addr, base, |
| 4 * chan_index); |
| } |
| } |
| |
| if (inst->Dst[0].Register.WriteMask == 0xF) { |
| LLVMValueRef value = lp_build_gather_values(bld_base->base.gallivm, |
| values, 4); |
| build_tbuffer_store_dwords(ctx, buffer, value, 4, buf_addr, |
| base, 0); |
| } |
| } |
| |
| static LLVMValueRef fetch_input_gs( |
| struct lp_build_tgsi_context *bld_base, |
| const struct tgsi_full_src_register *reg, |
| enum tgsi_opcode_type type, |
| unsigned swizzle) |
| { |
| struct lp_build_context *base = &bld_base->base; |
| struct si_shader_context *ctx = si_shader_context(bld_base); |
| struct si_shader *shader = ctx->shader; |
| struct lp_build_context *uint = &ctx->bld_base.uint_bld; |
| struct gallivm_state *gallivm = base->gallivm; |
| LLVMValueRef vtx_offset; |
| LLVMValueRef args[9]; |
| unsigned vtx_offset_param; |
| struct tgsi_shader_info *info = &shader->selector->info; |
| unsigned semantic_name = info->input_semantic_name[reg->Register.Index]; |
| unsigned semantic_index = info->input_semantic_index[reg->Register.Index]; |
| unsigned param; |
| LLVMValueRef value; |
| |
| if (swizzle != ~0 && semantic_name == TGSI_SEMANTIC_PRIMID) |
| return get_primitive_id(bld_base, swizzle); |
| |
| if (!reg->Register.Dimension) |
| return NULL; |
| |
| if (swizzle == ~0) { |
| LLVMValueRef values[TGSI_NUM_CHANNELS]; |
| unsigned chan; |
| for (chan = 0; chan < TGSI_NUM_CHANNELS; chan++) { |
| values[chan] = fetch_input_gs(bld_base, reg, type, chan); |
| } |
| return lp_build_gather_values(bld_base->base.gallivm, values, |
| TGSI_NUM_CHANNELS); |
| } |
| |
| /* Get the vertex offset parameter */ |
| vtx_offset_param = reg->Dimension.Index; |
| if (vtx_offset_param < 2) { |
| vtx_offset_param += SI_PARAM_VTX0_OFFSET; |
| } else { |
| assert(vtx_offset_param < 6); |
| vtx_offset_param += SI_PARAM_VTX2_OFFSET - 2; |
| } |
| vtx_offset = lp_build_mul_imm(uint, |
| LLVMGetParam(ctx->main_fn, |
| vtx_offset_param), |
| 4); |
| |
| param = si_shader_io_get_unique_index(semantic_name, semantic_index); |
| args[0] = ctx->esgs_ring; |
| args[1] = vtx_offset; |
| args[2] = lp_build_const_int32(gallivm, (param * 4 + swizzle) * 256); |
| args[3] = uint->zero; |
| args[4] = uint->one; /* OFFEN */ |
| args[5] = uint->zero; /* IDXEN */ |
| args[6] = uint->one; /* GLC */ |
| args[7] = uint->zero; /* SLC */ |
| args[8] = uint->zero; /* TFE */ |
| |
| value = lp_build_intrinsic(gallivm->builder, |
| "llvm.SI.buffer.load.dword.i32.i32", |
| ctx->i32, args, 9, |
| LP_FUNC_ATTR_READONLY); |
| if (tgsi_type_is_64bit(type)) { |
| LLVMValueRef value2; |
| args[2] = lp_build_const_int32(gallivm, (param * 4 + swizzle + 1) * 256); |
| value2 = lp_build_intrinsic(gallivm->builder, |
| "llvm.SI.buffer.load.dword.i32.i32", |
| ctx->i32, args, 9, |
| LP_FUNC_ATTR_READONLY); |
| return si_llvm_emit_fetch_64bit(bld_base, type, |
| value, value2); |
| } |
| return LLVMBuildBitCast(gallivm->builder, |
| value, |
| tgsi2llvmtype(bld_base, type), ""); |
| } |
| |
| static int lookup_interp_param_index(unsigned interpolate, unsigned location) |
| { |
| switch (interpolate) { |
| case TGSI_INTERPOLATE_CONSTANT: |
| return 0; |
| |
| case TGSI_INTERPOLATE_LINEAR: |
| if (location == TGSI_INTERPOLATE_LOC_SAMPLE) |
| return SI_PARAM_LINEAR_SAMPLE; |
| else if (location == TGSI_INTERPOLATE_LOC_CENTROID) |
| return SI_PARAM_LINEAR_CENTROID; |
| else |
| return SI_PARAM_LINEAR_CENTER; |
| break; |
| case TGSI_INTERPOLATE_COLOR: |
| case TGSI_INTERPOLATE_PERSPECTIVE: |
| if (location == TGSI_INTERPOLATE_LOC_SAMPLE) |
| return SI_PARAM_PERSP_SAMPLE; |
| else if (location == TGSI_INTERPOLATE_LOC_CENTROID) |
| return SI_PARAM_PERSP_CENTROID; |
| else |
| return SI_PARAM_PERSP_CENTER; |
| break; |
| default: |
| fprintf(stderr, "Warning: Unhandled interpolation mode.\n"); |
| return -1; |
| } |
| } |
| |
| static LLVMValueRef build_fs_interp( |
| struct lp_build_tgsi_context *bld_base, |
| LLVMValueRef llvm_chan, |
| LLVMValueRef attr_number, |
| LLVMValueRef params, |
| LLVMValueRef i, |
| LLVMValueRef j) { |
| |
| struct si_shader_context *ctx = si_shader_context(bld_base); |
| struct gallivm_state *gallivm = bld_base->base.gallivm; |
| LLVMValueRef args[5]; |
| LLVMValueRef p1; |
| if (HAVE_LLVM < 0x0400) { |
| LLVMValueRef ij[2]; |
| ij[0] = LLVMBuildBitCast(gallivm->builder, i, ctx->i32, ""); |
| ij[1] = LLVMBuildBitCast(gallivm->builder, j, ctx->i32, ""); |
| |
| args[0] = llvm_chan; |
| args[1] = attr_number; |
| args[2] = params; |
| args[3] = lp_build_gather_values(gallivm, ij, 2); |
| return lp_build_intrinsic(gallivm->builder, "llvm.SI.fs.interp", |
| ctx->f32, args, 4, |
| LP_FUNC_ATTR_READNONE); |
| } |
| |
| args[0] = i; |
| args[1] = llvm_chan; |
| args[2] = attr_number; |
| args[3] = params; |
| |
| p1 = lp_build_intrinsic(gallivm->builder, "llvm.amdgcn.interp.p1", |
| ctx->f32, args, 4, LP_FUNC_ATTR_READNONE); |
| |
| args[0] = p1; |
| args[1] = j; |
| args[2] = llvm_chan; |
| args[3] = attr_number; |
| args[4] = params; |
| |
| return lp_build_intrinsic(gallivm->builder, "llvm.amdgcn.interp.p2", |
| ctx->f32, args, 5, LP_FUNC_ATTR_READNONE); |
| } |
| |
| static LLVMValueRef build_fs_interp_mov( |
| struct lp_build_tgsi_context *bld_base, |
| LLVMValueRef parameter, |
| LLVMValueRef llvm_chan, |
| LLVMValueRef attr_number, |
| LLVMValueRef params) { |
| |
| struct si_shader_context *ctx = si_shader_context(bld_base); |
| struct gallivm_state *gallivm = bld_base->base.gallivm; |
| LLVMValueRef args[4]; |
| if (HAVE_LLVM < 0x0400) { |
| args[0] = llvm_chan; |
| args[1] = attr_number; |
| args[2] = params; |
| |
| return lp_build_intrinsic(gallivm->builder, |
| "llvm.SI.fs.constant", |
| ctx->f32, args, 3, |
| LP_FUNC_ATTR_READNONE); |
| } |
| |
| args[0] = parameter; |
| args[1] = llvm_chan; |
| args[2] = attr_number; |
| args[3] = params; |
| |
| return lp_build_intrinsic(gallivm->builder, "llvm.amdgcn.interp.mov", |
| ctx->f32, args, 4, LP_FUNC_ATTR_READNONE); |
| } |
| |
| /** |
| * Interpolate a fragment shader input. |
| * |
| * @param ctx context |
| * @param input_index index of the input in hardware |
| * @param semantic_name TGSI_SEMANTIC_* |
| * @param semantic_index semantic index |
| * @param num_interp_inputs number of all interpolated inputs (= BCOLOR offset) |
| * @param colors_read_mask color components read (4 bits for each color, 8 bits in total) |
| * @param interp_param interpolation weights (i,j) |
| * @param prim_mask SI_PARAM_PRIM_MASK |
| * @param face SI_PARAM_FRONT_FACE |
| * @param result the return value (4 components) |
| */ |
| static void interp_fs_input(struct si_shader_context *ctx, |
| unsigned input_index, |
| unsigned semantic_name, |
| unsigned semantic_index, |
| unsigned num_interp_inputs, |
| unsigned colors_read_mask, |
| LLVMValueRef interp_param, |
| LLVMValueRef prim_mask, |
| LLVMValueRef face, |
| LLVMValueRef result[4]) |
| { |
| struct lp_build_tgsi_context *bld_base = &ctx->bld_base; |
| struct lp_build_context *base = &bld_base->base; |
| struct lp_build_context *uint = &bld_base->uint_bld; |
| struct gallivm_state *gallivm = base->gallivm; |
| LLVMValueRef attr_number; |
| LLVMValueRef i, j; |
| |
| unsigned chan; |
| |
| /* fs.constant returns the param from the middle vertex, so it's not |
| * really useful for flat shading. It's meant to be used for custom |
| * interpolation (but the intrinsic can't fetch from the other two |
| * vertices). |
| * |
| * Luckily, it doesn't matter, because we rely on the FLAT_SHADE state |
| * to do the right thing. The only reason we use fs.constant is that |
| * fs.interp cannot be used on integers, because they can be equal |
| * to NaN. |
| * |
| * When interp is false we will use fs.constant or for newer llvm, |
| * amdgcn.interp.mov. |
| */ |
| bool interp = interp_param != NULL; |
| |
| attr_number = lp_build_const_int32(gallivm, input_index); |
| |
| if (interp) { |
| interp_param = LLVMBuildBitCast(gallivm->builder, interp_param, |
| LLVMVectorType(ctx->f32, 2), ""); |
| |
| i = LLVMBuildExtractElement(gallivm->builder, interp_param, |
| uint->zero, ""); |
| j = LLVMBuildExtractElement(gallivm->builder, interp_param, |
| uint->one, ""); |
| } |
| |
| if (semantic_name == TGSI_SEMANTIC_COLOR && |
| ctx->shader->key.part.ps.prolog.color_two_side) { |
| LLVMValueRef is_face_positive; |
| LLVMValueRef back_attr_number; |
| |
| /* If BCOLOR0 is used, BCOLOR1 is at offset "num_inputs + 1", |
| * otherwise it's at offset "num_inputs". |
| */ |
| unsigned back_attr_offset = num_interp_inputs; |
| if (semantic_index == 1 && colors_read_mask & 0xf) |
| back_attr_offset += 1; |
| |
| back_attr_number = lp_build_const_int32(gallivm, back_attr_offset); |
| |
| is_face_positive = LLVMBuildICmp(gallivm->builder, LLVMIntNE, |
| face, uint->zero, ""); |
| |
| for (chan = 0; chan < TGSI_NUM_CHANNELS; chan++) { |
| LLVMValueRef llvm_chan = lp_build_const_int32(gallivm, chan); |
| LLVMValueRef front, back; |
| |
| if (interp) { |
| front = build_fs_interp(bld_base, llvm_chan, |
| attr_number, prim_mask, |
| i, j); |
| back = build_fs_interp(bld_base, llvm_chan, |
| back_attr_number, prim_mask, |
| i, j); |
| } else { |
| front = build_fs_interp_mov(bld_base, |
| lp_build_const_int32(gallivm, 2), /* P0 */ |
| llvm_chan, attr_number, prim_mask); |
| back = build_fs_interp_mov(bld_base, |
| lp_build_const_int32(gallivm, 2), /* P0 */ |
| llvm_chan, back_attr_number, prim_mask); |
| } |
| |
| result[chan] = LLVMBuildSelect(gallivm->builder, |
| is_face_positive, |
| front, |
| back, |
| ""); |
| } |
| } else if (semantic_name == TGSI_SEMANTIC_FOG) { |
| if (interp) { |
| result[0] = build_fs_interp(bld_base, uint->zero, |
| attr_number, prim_mask, i, j); |
| } else { |
| result[0] = build_fs_interp_mov(bld_base, uint->zero, |
| lp_build_const_int32(gallivm, 2), /* P0 */ |
| attr_number, prim_mask); |
| } |
| result[1] = |
| result[2] = lp_build_const_float(gallivm, 0.0f); |
| result[3] = lp_build_const_float(gallivm, 1.0f); |
| } else { |
| for (chan = 0; chan < TGSI_NUM_CHANNELS; chan++) { |
| LLVMValueRef llvm_chan = lp_build_const_int32(gallivm, chan); |
| |
| if (interp) { |
| result[chan] = build_fs_interp(bld_base, |
| llvm_chan, attr_number, prim_mask, i, j); |
| } else { |
| result[chan] = build_fs_interp_mov(bld_base, |
| lp_build_const_int32(gallivm, 2), /* P0 */ |
| llvm_chan, attr_number, prim_mask); |
| } |
| } |
| } |
| } |
| |
| static void declare_input_fs( |
| struct si_shader_context *radeon_bld, |
| unsigned input_index, |
| const struct tgsi_full_declaration *decl, |
| LLVMValueRef out[4]) |
| { |
| struct lp_build_context *base = &radeon_bld->bld_base.base; |
| struct si_shader_context *ctx = |
| si_shader_context(&radeon_bld->bld_base); |
| struct si_shader *shader = ctx->shader; |
| LLVMValueRef main_fn = radeon_bld->main_fn; |
| LLVMValueRef interp_param = NULL; |
| int interp_param_idx; |
| |
| /* Get colors from input VGPRs (set by the prolog). */ |
| if (decl->Semantic.Name == TGSI_SEMANTIC_COLOR) { |
| unsigned i = decl->Semantic.Index; |
| unsigned colors_read = shader->selector->info.colors_read; |
| unsigned mask = colors_read >> (i * 4); |
| unsigned offset = SI_PARAM_POS_FIXED_PT + 1 + |
| (i ? util_bitcount(colors_read & 0xf) : 0); |
| |
| out[0] = mask & 0x1 ? LLVMGetParam(main_fn, offset++) : base->undef; |
| out[1] = mask & 0x2 ? LLVMGetParam(main_fn, offset++) : base->undef; |
| out[2] = mask & 0x4 ? LLVMGetParam(main_fn, offset++) : base->undef; |
| out[3] = mask & 0x8 ? LLVMGetParam(main_fn, offset++) : base->undef; |
| return; |
| } |
| |
| interp_param_idx = lookup_interp_param_index(decl->Interp.Interpolate, |
| decl->Interp.Location); |
| if (interp_param_idx == -1) |
| return; |
| else if (interp_param_idx) { |
| interp_param = LLVMGetParam(ctx->main_fn, interp_param_idx); |
| } |
| |
| if (decl->Semantic.Name == TGSI_SEMANTIC_COLOR && |
| decl->Interp.Interpolate == TGSI_INTERPOLATE_COLOR && |
| ctx->shader->key.part.ps.prolog.flatshade_colors) |
| interp_param = NULL; /* load the constant color */ |
| |
| interp_fs_input(ctx, input_index, decl->Semantic.Name, |
| decl->Semantic.Index, shader->selector->info.num_inputs, |
| shader->selector->info.colors_read, interp_param, |
| LLVMGetParam(main_fn, SI_PARAM_PRIM_MASK), |
| LLVMGetParam(main_fn, SI_PARAM_FRONT_FACE), |
| &out[0]); |
| } |
| |
| static LLVMValueRef get_sample_id(struct si_shader_context *radeon_bld) |
| { |
| return unpack_param(si_shader_context(&radeon_bld->bld_base), |
| SI_PARAM_ANCILLARY, 8, 4); |
| } |
| |
| /** |
| * Set range metadata on an instruction. This can only be used on load and |
| * call instructions. If you know an instruction can only produce the values |
| * 0, 1, 2, you would do set_range_metadata(value, 0, 3); |
| * \p lo is the minimum value inclusive. |
| * \p hi is the maximum value exclusive. |
| */ |
| static void set_range_metadata(struct si_shader_context *ctx, |
| LLVMValueRef value, unsigned lo, unsigned hi) |
| { |
| LLVMValueRef range_md, md_args[2]; |
| LLVMTypeRef type = LLVMTypeOf(value); |
| LLVMContextRef context = LLVMGetTypeContext(type); |
| |
| md_args[0] = LLVMConstInt(type, lo, false); |
| md_args[1] = LLVMConstInt(type, hi, false); |
| range_md = LLVMMDNodeInContext(context, md_args, 2); |
| LLVMSetMetadata(value, ctx->range_md_kind, range_md); |
| } |
| |
| static LLVMValueRef get_thread_id(struct si_shader_context *ctx) |
| { |
| struct gallivm_state *gallivm = &ctx->gallivm; |
| LLVMValueRef tid; |
| |
| if (HAVE_LLVM < 0x0308) { |
| tid = lp_build_intrinsic(gallivm->builder, "llvm.SI.tid", |
| ctx->i32, NULL, 0, LP_FUNC_ATTR_READNONE); |
| } else { |
| LLVMValueRef tid_args[2]; |
| tid_args[0] = lp_build_const_int32(gallivm, 0xffffffff); |
| tid_args[1] = lp_build_const_int32(gallivm, 0); |
| tid_args[1] = lp_build_intrinsic(gallivm->builder, |
| "llvm.amdgcn.mbcnt.lo", ctx->i32, |
| tid_args, 2, LP_FUNC_ATTR_READNONE); |
| |
| tid = lp_build_intrinsic(gallivm->builder, |
| "llvm.amdgcn.mbcnt.hi", ctx->i32, |
| tid_args, 2, LP_FUNC_ATTR_READNONE); |
| } |
| set_range_metadata(ctx, tid, 0, 64); |
| return tid; |
| } |
| |
| /** |
| * Load a dword from a constant buffer. |
| */ |
| static LLVMValueRef buffer_load_const(struct si_shader_context *ctx, |
| LLVMValueRef resource, |
| LLVMValueRef offset) |
| { |
| LLVMBuilderRef builder = ctx->gallivm.builder; |
| LLVMValueRef args[2] = {resource, offset}; |
| |
| return lp_build_intrinsic(builder, "llvm.SI.load.const", ctx->f32, args, 2, |
| LP_FUNC_ATTR_READNONE); |
| } |
| |
| static LLVMValueRef load_sample_position(struct si_shader_context *radeon_bld, LLVMValueRef sample_id) |
| { |
| struct si_shader_context *ctx = |
| si_shader_context(&radeon_bld->bld_base); |
| struct lp_build_context *uint_bld = &radeon_bld->bld_base.uint_bld; |
| struct gallivm_state *gallivm = &radeon_bld->gallivm; |
| LLVMBuilderRef builder = gallivm->builder; |
| LLVMValueRef desc = LLVMGetParam(ctx->main_fn, SI_PARAM_RW_BUFFERS); |
| LLVMValueRef buf_index = lp_build_const_int32(gallivm, SI_PS_CONST_SAMPLE_POSITIONS); |
| LLVMValueRef resource = build_indexed_load_const(ctx, desc, buf_index); |
| |
| /* offset = sample_id * 8 (8 = 2 floats containing samplepos.xy) */ |
| LLVMValueRef offset0 = lp_build_mul_imm(uint_bld, sample_id, 8); |
| LLVMValueRef offset1 = LLVMBuildAdd(builder, offset0, lp_build_const_int32(gallivm, 4), ""); |
| |
| LLVMValueRef pos[4] = { |
| buffer_load_const(ctx, resource, offset0), |
| buffer_load_const(ctx, resource, offset1), |
| lp_build_const_float(gallivm, 0), |
| lp_build_const_float(gallivm, 0) |
| }; |
| |
| return lp_build_gather_values(gallivm, pos, 4); |
| } |
| |
| static void declare_system_value( |
| struct si_shader_context *radeon_bld, |
| unsigned index, |
| const struct tgsi_full_declaration *decl) |
| { |
| struct si_shader_context *ctx = |
| si_shader_context(&radeon_bld->bld_base); |
| struct lp_build_context *bld = &radeon_bld->bld_base.base; |
| struct gallivm_state *gallivm = &radeon_bld->gallivm; |
| LLVMValueRef value = 0; |
| |
| switch (decl->Semantic.Name) { |
| case TGSI_SEMANTIC_INSTANCEID: |
| value = LLVMGetParam(radeon_bld->main_fn, |
| ctx->param_instance_id); |
| break; |
| |
| case TGSI_SEMANTIC_VERTEXID: |
| value = LLVMBuildAdd(gallivm->builder, |
| LLVMGetParam(radeon_bld->main_fn, |
| ctx->param_vertex_id), |
| LLVMGetParam(radeon_bld->main_fn, |
| SI_PARAM_BASE_VERTEX), ""); |
| break; |
| |
| case TGSI_SEMANTIC_VERTEXID_NOBASE: |
| value = LLVMGetParam(radeon_bld->main_fn, |
| ctx->param_vertex_id); |
| break; |
| |
| case TGSI_SEMANTIC_BASEVERTEX: |
| value = LLVMGetParam(radeon_bld->main_fn, |
| SI_PARAM_BASE_VERTEX); |
| break; |
| |
| case TGSI_SEMANTIC_BASEINSTANCE: |
| value = LLVMGetParam(radeon_bld->main_fn, |
| SI_PARAM_START_INSTANCE); |
| break; |
| |
| case TGSI_SEMANTIC_DRAWID: |
| value = LLVMGetParam(radeon_bld->main_fn, |
| SI_PARAM_DRAWID); |
| break; |
| |
| case TGSI_SEMANTIC_INVOCATIONID: |
| if (ctx->type == PIPE_SHADER_TESS_CTRL) |
| value = unpack_param(ctx, SI_PARAM_REL_IDS, 8, 5); |
| else if (ctx->type == PIPE_SHADER_GEOMETRY) |
| value = LLVMGetParam(radeon_bld->main_fn, |
| SI_PARAM_GS_INSTANCE_ID); |
| else |
| assert(!"INVOCATIONID not implemented"); |
| break; |
| |
| case TGSI_SEMANTIC_POSITION: |
| { |
| LLVMValueRef pos[4] = { |
| LLVMGetParam(radeon_bld->main_fn, SI_PARAM_POS_X_FLOAT), |
| LLVMGetParam(radeon_bld->main_fn, SI_PARAM_POS_Y_FLOAT), |
| LLVMGetParam(radeon_bld->main_fn, SI_PARAM_POS_Z_FLOAT), |
| lp_build_emit_llvm_unary(&radeon_bld->bld_base, TGSI_OPCODE_RCP, |
| LLVMGetParam(radeon_bld->main_fn, |
| SI_PARAM_POS_W_FLOAT)), |
| }; |
| value = lp_build_gather_values(gallivm, pos, 4); |
| break; |
| } |
| |
| case TGSI_SEMANTIC_FACE: |
| value = LLVMGetParam(radeon_bld->main_fn, SI_PARAM_FRONT_FACE); |
| break; |
| |
| case TGSI_SEMANTIC_SAMPLEID: |
| value = get_sample_id(radeon_bld); |
| break; |
| |
| case TGSI_SEMANTIC_SAMPLEPOS: { |
| LLVMValueRef pos[4] = { |
| LLVMGetParam(radeon_bld->main_fn, SI_PARAM_POS_X_FLOAT), |
| LLVMGetParam(radeon_bld->main_fn, SI_PARAM_POS_Y_FLOAT), |
| lp_build_const_float(gallivm, 0), |
| lp_build_const_float(gallivm, 0) |
| }; |
| pos[0] = lp_build_emit_llvm_unary(&radeon_bld->bld_base, |
| TGSI_OPCODE_FRC, pos[0]); |
| pos[1] = lp_build_emit_llvm_unary(&radeon_bld->bld_base, |
| TGSI_OPCODE_FRC, pos[1]); |
| value = lp_build_gather_values(gallivm, pos, 4); |
| break; |
| } |
| |
| case TGSI_SEMANTIC_SAMPLEMASK: |
| /* This can only occur with the OpenGL Core profile, which |
| * doesn't support smoothing. |
| */ |
| value = LLVMGetParam(radeon_bld->main_fn, SI_PARAM_SAMPLE_COVERAGE); |
| break; |
| |
| case TGSI_SEMANTIC_TESSCOORD: |
| { |
| LLVMValueRef coord[4] = { |
| LLVMGetParam(radeon_bld->main_fn, ctx->param_tes_u), |
| LLVMGetParam(radeon_bld->main_fn, ctx->param_tes_v), |
| bld->zero, |
| bld->zero |
| }; |
| |
| /* For triangles, the vector should be (u, v, 1-u-v). */ |
| if (ctx->shader->selector->info.properties[TGSI_PROPERTY_TES_PRIM_MODE] == |
| PIPE_PRIM_TRIANGLES) |
| coord[2] = lp_build_sub(bld, bld->one, |
| lp_build_add(bld, coord[0], coord[1])); |
| |
| value = lp_build_gather_values(gallivm, coord, 4); |
| break; |
| } |
| |
| case TGSI_SEMANTIC_VERTICESIN: |
| if (ctx->type == PIPE_SHADER_TESS_CTRL) |
| value = unpack_param(ctx, SI_PARAM_TCS_OUT_LAYOUT, 26, 6); |
| else if (ctx->type == PIPE_SHADER_TESS_EVAL) |
| value = unpack_param(ctx, SI_PARAM_TCS_OFFCHIP_LAYOUT, 9, 7); |
| else |
| assert(!"invalid shader stage for TGSI_SEMANTIC_VERTICESIN"); |
| break; |
| |
| case TGSI_SEMANTIC_TESSINNER: |
| case TGSI_SEMANTIC_TESSOUTER: |
| { |
| LLVMValueRef rw_buffers, buffer, base, addr; |
| int param = si_shader_io_get_unique_index(decl->Semantic.Name, 0); |
| |
| rw_buffers = LLVMGetParam(ctx->main_fn, |
| SI_PARAM_RW_BUFFERS); |
| buffer = build_indexed_load_const(ctx, rw_buffers, |
| lp_build_const_int32(gallivm, SI_HS_RING_TESS_OFFCHIP)); |
| |
| base = LLVMGetParam(ctx->main_fn, ctx->param_oc_lds); |
| addr = get_tcs_tes_buffer_address(ctx, NULL, |
| lp_build_const_int32(gallivm, param)); |
| |
| value = buffer_load(&radeon_bld->bld_base, TGSI_TYPE_FLOAT, |
| ~0, buffer, base, addr); |
| |
| break; |
| } |
| |
| case TGSI_SEMANTIC_DEFAULT_TESSOUTER_SI: |
| case TGSI_SEMANTIC_DEFAULT_TESSINNER_SI: |
| { |
| LLVMValueRef buf, slot, val[4]; |
| int i, offset; |
| |
| slot = lp_build_const_int32(gallivm, SI_HS_CONST_DEFAULT_TESS_LEVELS); |
| buf = LLVMGetParam(ctx->main_fn, SI_PARAM_RW_BUFFERS); |
| buf = build_indexed_load_const(ctx, buf, slot); |
| offset = decl->Semantic.Name == TGSI_SEMANTIC_DEFAULT_TESSINNER_SI ? 4 : 0; |
| |
| for (i = 0; i < 4; i++) |
| val[i] = buffer_load_const(ctx, buf, |
| lp_build_const_int32(gallivm, (offset + i) * 4)); |
| value = lp_build_gather_values(gallivm, val, 4); |
| break; |
| } |
| |
| case TGSI_SEMANTIC_PRIMID: |
| value = get_primitive_id(&radeon_bld->bld_base, 0); |
| break; |
| |
| case TGSI_SEMANTIC_GRID_SIZE: |
| value = LLVMGetParam(radeon_bld->main_fn, SI_PARAM_GRID_SIZE); |
| break; |
| |
| case TGSI_SEMANTIC_BLOCK_SIZE: |
| { |
| LLVMValueRef values[3]; |
| unsigned i; |
| unsigned *properties = ctx->shader->selector->info.properties; |
| |
| if (properties[TGSI_PROPERTY_CS_FIXED_BLOCK_WIDTH] != 0) { |
| unsigned sizes[3] = { |
| properties[TGSI_PROPERTY_CS_FIXED_BLOCK_WIDTH], |
| properties[TGSI_PROPERTY_CS_FIXED_BLOCK_HEIGHT], |
| properties[TGSI_PROPERTY_CS_FIXED_BLOCK_DEPTH] |
| }; |
| |
| for (i = 0; i < 3; ++i) |
| values[i] = lp_build_const_int32(gallivm, sizes[i]); |
| |
| value = lp_build_gather_values(gallivm, values, 3); |
| } else { |
| value = LLVMGetParam(radeon_bld->main_fn, SI_PARAM_BLOCK_SIZE); |
| } |
| break; |
| } |
| |
| case TGSI_SEMANTIC_BLOCK_ID: |
| value = LLVMGetParam(radeon_bld->main_fn, SI_PARAM_BLOCK_ID); |
| break; |
| |
| case TGSI_SEMANTIC_THREAD_ID: |
| value = LLVMGetParam(radeon_bld->main_fn, SI_PARAM_THREAD_ID); |
| break; |
| |
| case TGSI_SEMANTIC_HELPER_INVOCATION: |
| if (HAVE_LLVM >= 0x0309) { |
| value = lp_build_intrinsic(gallivm->builder, |
| "llvm.amdgcn.ps.live", |
| ctx->i1, NULL, 0, |
| LP_FUNC_ATTR_READNONE); |
| value = LLVMBuildNot(gallivm->builder, value, ""); |
| value = LLVMBuildSExt(gallivm->builder, value, ctx->i32, ""); |
| } else { |
| assert(!"TGSI_SEMANTIC_HELPER_INVOCATION unsupported"); |
| return; |
| } |
| break; |
| |
| default: |
| assert(!"unknown system value"); |
| return; |
| } |
| |
| radeon_bld->system_values[index] = value; |
| } |
| |
| static void declare_compute_memory(struct si_shader_context *radeon_bld, |
| const struct tgsi_full_declaration *decl) |
| { |
| struct si_shader_context *ctx = |
| si_shader_context(&radeon_bld->bld_base); |
| struct si_shader_selector *sel = ctx->shader->selector; |
| struct gallivm_state *gallivm = &radeon_bld->gallivm; |
| |
| LLVMTypeRef i8p = LLVMPointerType(ctx->i8, LOCAL_ADDR_SPACE); |
| LLVMValueRef var; |
| |
| assert(decl->Declaration.MemType == TGSI_MEMORY_TYPE_SHARED); |
| assert(decl->Range.First == decl->Range.Last); |
| assert(!ctx->shared_memory); |
| |
| var = LLVMAddGlobalInAddressSpace(gallivm->module, |
| LLVMArrayType(ctx->i8, sel->local_size), |
| "compute_lds", |
| LOCAL_ADDR_SPACE); |
| LLVMSetAlignment(var, 4); |
| |
| ctx->shared_memory = LLVMBuildBitCast(gallivm->builder, var, i8p, ""); |
| } |
| |
| static LLVMValueRef load_const_buffer_desc(struct si_shader_context *ctx, int i) |
| { |
| LLVMValueRef list_ptr = LLVMGetParam(ctx->main_fn, |
| SI_PARAM_CONST_BUFFERS); |
| |
| return build_indexed_load_const(ctx, list_ptr, |
| LLVMConstInt(ctx->i32, i, 0)); |
| } |
| |
| static LLVMValueRef fetch_constant( |
| struct lp_build_tgsi_context *bld_base, |
| const struct tgsi_full_src_register *reg, |
| enum tgsi_opcode_type type, |
| unsigned swizzle) |
| { |
| struct si_shader_context *ctx = si_shader_context(bld_base); |
| struct lp_build_context *base = &bld_base->base; |
| const struct tgsi_ind_register *ireg = ®->Indirect; |
| unsigned buf, idx; |
| |
| LLVMValueRef addr, bufp; |
| LLVMValueRef result; |
| |
| if (swizzle == LP_CHAN_ALL) { |
| unsigned chan; |
| LLVMValueRef values[4]; |
| for (chan = 0; chan < TGSI_NUM_CHANNELS; ++chan) |
| values[chan] = fetch_constant(bld_base, reg, type, chan); |
| |
| return lp_build_gather_values(bld_base->base.gallivm, values, 4); |
| } |
| |
| buf = reg->Register.Dimension ? reg->Dimension.Index : 0; |
| idx = reg->Register.Index * 4 + swizzle; |
| |
| if (reg->Register.Dimension && reg->Dimension.Indirect) { |
| LLVMValueRef ptr = LLVMGetParam(ctx->main_fn, SI_PARAM_CONST_BUFFERS); |
| LLVMValueRef index; |
| index = get_bounded_indirect_index(ctx, ®->DimIndirect, |
| reg->Dimension.Index, |
| SI_NUM_CONST_BUFFERS); |
| bufp = build_indexed_load_const(ctx, ptr, index); |
| } else |
| bufp = load_const_buffer_desc(ctx, buf); |
| |
| if (reg->Register.Indirect) { |
| addr = ctx->addrs[ireg->Index][ireg->Swizzle]; |
| addr = LLVMBuildLoad(base->gallivm->builder, addr, "load addr reg"); |
| addr = lp_build_mul_imm(&bld_base->uint_bld, addr, 16); |
| addr = lp_build_add(&bld_base->uint_bld, addr, |
| lp_build_const_int32(base->gallivm, idx * 4)); |
| } else { |
| addr = LLVMConstInt(ctx->i32, idx * 4, 0); |
| } |
| |
| result = buffer_load_const(ctx, bufp, addr); |
| |
| if (!tgsi_type_is_64bit(type)) |
| result = bitcast(bld_base, type, result); |
| else { |
| LLVMValueRef addr2, result2; |
| |
| addr2 = lp_build_add(&bld_base->uint_bld, addr, |
| LLVMConstInt(ctx->i32, 4, 0)); |
| result2 = buffer_load_const(ctx, bufp, addr2); |
| |
| result = si_llvm_emit_fetch_64bit(bld_base, type, |
| result, result2); |
| } |
| return result; |
| } |
| |
| /* Upper 16 bits must be zero. */ |
| static LLVMValueRef si_llvm_pack_two_int16(struct gallivm_state *gallivm, |
| LLVMValueRef val[2]) |
| { |
| return LLVMBuildOr(gallivm->builder, val[0], |
| LLVMBuildShl(gallivm->builder, val[1], |
| lp_build_const_int32(gallivm, 16), |
| ""), ""); |
| } |
| |
| /* Upper 16 bits are ignored and will be dropped. */ |
| static LLVMValueRef si_llvm_pack_two_int32_as_int16(struct gallivm_state *gallivm, |
| LLVMValueRef val[2]) |
| { |
| LLVMValueRef v[2] = { |
| LLVMBuildAnd(gallivm->builder, val[0], |
| lp_build_const_int32(gallivm, 0xffff), ""), |
| val[1], |
| }; |
| return si_llvm_pack_two_int16(gallivm, v); |
| } |
| |
| /* Initialize arguments for the shader export intrinsic */ |
| static void si_llvm_init_export_args(struct lp_build_tgsi_context *bld_base, |
| LLVMValueRef *values, |
| unsigned target, |
| LLVMValueRef *args) |
| { |
| struct si_shader_context *ctx = si_shader_context(bld_base); |
| struct lp_build_context *uint = &ctx->bld_base.uint_bld; |
| struct lp_build_context *base = &bld_base->base; |
| struct gallivm_state *gallivm = base->gallivm; |
| LLVMBuilderRef builder = base->gallivm->builder; |
| LLVMValueRef val[4]; |
| unsigned spi_shader_col_format = V_028714_SPI_SHADER_32_ABGR; |
| unsigned chan; |
| bool is_int8; |
| |
| /* Default is 0xf. Adjusted below depending on the format. */ |
| args[0] = lp_build_const_int32(base->gallivm, 0xf); /* writemask */ |
| |
| /* Specify whether the EXEC mask represents the valid mask */ |
| args[1] = uint->zero; |
| |
| /* Specify whether this is the last export */ |
| args[2] = uint->zero; |
| |
| /* Specify the target we are exporting */ |
| args[3] = lp_build_const_int32(base->gallivm, target); |
| |
| if (ctx->type == PIPE_SHADER_FRAGMENT) { |
| const struct si_shader_key *key = &ctx->shader->key; |
| unsigned col_formats = key->part.ps.epilog.spi_shader_col_format; |
| int cbuf = target - V_008DFC_SQ_EXP_MRT; |
| |
| assert(cbuf >= 0 && cbuf < 8); |
| spi_shader_col_format = (col_formats >> (cbuf * 4)) & 0xf; |
| is_int8 = (key->part.ps.epilog.color_is_int8 >> cbuf) & 0x1; |
| } |
| |
| args[4] = uint->zero; /* COMPR flag */ |
| args[5] = base->undef; |
| args[6] = base->undef; |
| args[7] = base->undef; |
| args[8] = base->undef; |
| |
| switch (spi_shader_col_format) { |
| case V_028714_SPI_SHADER_ZERO: |
| args[0] = uint->zero; /* writemask */ |
| args[3] = lp_build_const_int32(base->gallivm, V_008DFC_SQ_EXP_NULL); |
| break; |
| |
| case V_028714_SPI_SHADER_32_R: |
| args[0] = uint->one; /* writemask */ |
| args[5] = values[0]; |
| break; |
| |
| case V_028714_SPI_SHADER_32_GR: |
| args[0] = lp_build_const_int32(base->gallivm, 0x3); /* writemask */ |
| args[5] = values[0]; |
| args[6] = values[1]; |
| break; |
| |
| case V_028714_SPI_SHADER_32_AR: |
| args[0] = lp_build_const_int32(base->gallivm, 0x9); /* writemask */ |
| args[5] = values[0]; |
| args[8] = values[3]; |
| break; |
| |
| case V_028714_SPI_SHADER_FP16_ABGR: |
| args[4] = uint->one; /* COMPR flag */ |
| |
| for (chan = 0; chan < 2; chan++) { |
| LLVMValueRef pack_args[2] = { |
| values[2 * chan], |
| values[2 * chan + 1] |
| }; |
| LLVMValueRef packed; |
| |
| packed = lp_build_intrinsic(base->gallivm->builder, |
| "llvm.SI.packf16", |
| ctx->i32, pack_args, 2, |
| LP_FUNC_ATTR_READNONE); |
| args[chan + 5] = |
| LLVMBuildBitCast(base->gallivm->builder, |
| packed, ctx->f32, ""); |
| } |
| break; |
| |
| case V_028714_SPI_SHADER_UNORM16_ABGR: |
| for (chan = 0; chan < 4; chan++) { |
| val[chan] = si_llvm_saturate(bld_base, values[chan]); |
| val[chan] = LLVMBuildFMul(builder, val[chan], |
| lp_build_const_float(gallivm, 65535), ""); |
| val[chan] = LLVMBuildFAdd(builder, val[chan], |
| lp_build_const_float(gallivm, 0.5), ""); |
| val[chan] = LLVMBuildFPToUI(builder, val[chan], |
| ctx->i32, ""); |
| } |
| |
| args[4] = uint->one; /* COMPR flag */ |
| args[5] = bitcast(bld_base, TGSI_TYPE_FLOAT, |
| si_llvm_pack_two_int16(gallivm, val)); |
| args[6] = bitcast(bld_base, TGSI_TYPE_FLOAT, |
| si_llvm_pack_two_int16(gallivm, val+2)); |
| break; |
| |
| case V_028714_SPI_SHADER_SNORM16_ABGR: |
| for (chan = 0; chan < 4; chan++) { |
| /* Clamp between [-1, 1]. */ |
| val[chan] = lp_build_emit_llvm_binary(bld_base, TGSI_OPCODE_MIN, |
| values[chan], |
| lp_build_const_float(gallivm, 1)); |
| val[chan] = lp_build_emit_llvm_binary(bld_base, TGSI_OPCODE_MAX, |
| val[chan], |
| lp_build_const_float(gallivm, -1)); |
| /* Convert to a signed integer in [-32767, 32767]. */ |
| val[chan] = LLVMBuildFMul(builder, val[chan], |
| lp_build_const_float(gallivm, 32767), ""); |
| /* If positive, add 0.5, else add -0.5. */ |
| val[chan] = LLVMBuildFAdd(builder, val[chan], |
| LLVMBuildSelect(builder, |
| LLVMBuildFCmp(builder, LLVMRealOGE, |
| val[chan], base->zero, ""), |
| lp_build_const_float(gallivm, 0.5), |
| lp_build_const_float(gallivm, -0.5), ""), ""); |
| val[chan] = LLVMBuildFPToSI(builder, val[chan], ctx->i32, ""); |
| } |
| |
| args[4] = uint->one; /* COMPR flag */ |
| args[5] = bitcast(bld_base, TGSI_TYPE_FLOAT, |
| si_llvm_pack_two_int32_as_int16(gallivm, val)); |
| args[6] = bitcast(bld_base, TGSI_TYPE_FLOAT, |
| si_llvm_pack_two_int32_as_int16(gallivm, val+2)); |
| break; |
| |
| case V_028714_SPI_SHADER_UINT16_ABGR: { |
| LLVMValueRef max = lp_build_const_int32(gallivm, is_int8 ? |
| 255 : 65535); |
| /* Clamp. */ |
| for (chan = 0; chan < 4; chan++) { |
| val[chan] = bitcast(bld_base, TGSI_TYPE_UNSIGNED, values[chan]); |
| val[chan] = lp_build_emit_llvm_binary(bld_base, TGSI_OPCODE_UMIN, |
| val[chan], max); |
| } |
| |
| args[4] = uint->one; /* COMPR flag */ |
| args[5] = bitcast(bld_base, TGSI_TYPE_FLOAT, |
| si_llvm_pack_two_int16(gallivm, val)); |
| args[6] = bitcast(bld_base, TGSI_TYPE_FLOAT, |
| si_llvm_pack_two_int16(gallivm, val+2)); |
| break; |
| } |
| |
| case V_028714_SPI_SHADER_SINT16_ABGR: { |
| LLVMValueRef max = lp_build_const_int32(gallivm, is_int8 ? |
| 127 : 32767); |
| LLVMValueRef min = lp_build_const_int32(gallivm, is_int8 ? |
| -128 : -32768); |
| /* Clamp. */ |
| for (chan = 0; chan < 4; chan++) { |
| val[chan] = bitcast(bld_base, TGSI_TYPE_UNSIGNED, values[chan]); |
| val[chan] = lp_build_emit_llvm_binary(bld_base, |
| TGSI_OPCODE_IMIN, |
| val[chan], max); |
| val[chan] = lp_build_emit_llvm_binary(bld_base, |
| TGSI_OPCODE_IMAX, |
| val[chan], min); |
| } |
| |
| args[4] = uint->one; /* COMPR flag */ |
| args[5] = bitcast(bld_base, TGSI_TYPE_FLOAT, |
| si_llvm_pack_two_int32_as_int16(gallivm, val)); |
| args[6] = bitcast(bld_base, TGSI_TYPE_FLOAT, |
| si_llvm_pack_two_int32_as_int16(gallivm, val+2)); |
| break; |
| } |
| |
| case V_028714_SPI_SHADER_32_ABGR: |
| memcpy(&args[5], values, sizeof(values[0]) * 4); |
| break; |
| } |
| } |
| |
| static void si_alpha_test(struct lp_build_tgsi_context *bld_base, |
| LLVMValueRef alpha) |
| { |
| struct si_shader_context *ctx = si_shader_context(bld_base); |
| struct gallivm_state *gallivm = bld_base->base.gallivm; |
| |
| if (ctx->shader->key.part.ps.epilog.alpha_func != PIPE_FUNC_NEVER) { |
| LLVMValueRef alpha_ref = LLVMGetParam(ctx->main_fn, |
| SI_PARAM_ALPHA_REF); |
| |
| LLVMValueRef alpha_pass = |
| lp_build_cmp(&bld_base->base, |
| ctx->shader->key.part.ps.epilog.alpha_func, |
| alpha, alpha_ref); |
| LLVMValueRef arg = |
| lp_build_select(&bld_base->base, |
| alpha_pass, |
| lp_build_const_float(gallivm, 1.0f), |
| lp_build_const_float(gallivm, -1.0f)); |
| |
| lp_build_intrinsic(gallivm->builder, "llvm.AMDGPU.kill", |
| ctx->voidt, &arg, 1, 0); |
| } else { |
| lp_build_intrinsic(gallivm->builder, "llvm.AMDGPU.kilp", |
| ctx->voidt, NULL, 0, 0); |
| } |
| } |
| |
| static LLVMValueRef si_scale_alpha_by_sample_mask(struct lp_build_tgsi_context *bld_base, |
| LLVMValueRef alpha, |
| unsigned samplemask_param) |
| { |
| struct si_shader_context *ctx = si_shader_context(bld_base); |
| struct gallivm_state *gallivm = bld_base->base.gallivm; |
| LLVMValueRef coverage; |
| |
| /* alpha = alpha * popcount(coverage) / SI_NUM_SMOOTH_AA_SAMPLES */ |
| coverage = LLVMGetParam(ctx->main_fn, |
| samplemask_param); |
| coverage = bitcast(bld_base, TGSI_TYPE_SIGNED, coverage); |
| |
| coverage = lp_build_intrinsic(gallivm->builder, "llvm.ctpop.i32", |
| ctx->i32, |
| &coverage, 1, LP_FUNC_ATTR_READNONE); |
| |
| coverage = LLVMBuildUIToFP(gallivm->builder, coverage, |
| ctx->f32, ""); |
| |
| coverage = LLVMBuildFMul(gallivm->builder, coverage, |
| lp_build_const_float(gallivm, |
| 1.0 / SI_NUM_SMOOTH_AA_SAMPLES), ""); |
| |
| return LLVMBuildFMul(gallivm->builder, alpha, coverage, ""); |
| } |
| |
| static void si_llvm_emit_clipvertex(struct lp_build_tgsi_context *bld_base, |
| LLVMValueRef (*pos)[9], LLVMValueRef *out_elts) |
| { |
| struct si_shader_context *ctx = si_shader_context(bld_base); |
| struct lp_build_context *base = &bld_base->base; |
| struct lp_build_context *uint = &ctx->bld_base.uint_bld; |
| unsigned reg_index; |
| unsigned chan; |
| unsigned const_chan; |
| LLVMValueRef base_elt; |
| LLVMValueRef ptr = LLVMGetParam(ctx->main_fn, SI_PARAM_RW_BUFFERS); |
| LLVMValueRef constbuf_index = lp_build_const_int32(base->gallivm, |
| SI_VS_CONST_CLIP_PLANES); |
| LLVMValueRef const_resource = build_indexed_load_const(ctx, ptr, constbuf_index); |
| |
| for (reg_index = 0; reg_index < 2; reg_index ++) { |
| LLVMValueRef *args = pos[2 + reg_index]; |
| |
| args[5] = |
| args[6] = |
| args[7] = |
| args[8] = lp_build_const_float(base->gallivm, 0.0f); |
| |
| /* Compute dot products of position and user clip plane vectors */ |
| for (chan = 0; chan < TGSI_NUM_CHANNELS; chan++) { |
| for (const_chan = 0; const_chan < TGSI_NUM_CHANNELS; const_chan++) { |
| args[1] = lp_build_const_int32(base->gallivm, |
| ((reg_index * 4 + chan) * 4 + |
| const_chan) * 4); |
| base_elt = buffer_load_const(ctx, const_resource, |
| args[1]); |
| args[5 + chan] = |
| lp_build_add(base, args[5 + chan], |
| lp_build_mul(base, base_elt, |
| out_elts[const_chan])); |
| } |
| } |
| |
| args[0] = lp_build_const_int32(base->gallivm, 0xf); |
| args[1] = uint->zero; |
| args[2] = uint->zero; |
| args[3] = lp_build_const_int32(base->gallivm, |
| V_008DFC_SQ_EXP_POS + 2 + reg_index); |
| args[4] = uint->zero; |
| } |
| } |
| |
| static void si_dump_streamout(struct pipe_stream_output_info *so) |
| { |
| unsigned i; |
| |
| if (so->num_outputs) |
| fprintf(stderr, "STREAMOUT\n"); |
| |
| for (i = 0; i < so->num_outputs; i++) { |
| unsigned mask = ((1 << so->output[i].num_components) - 1) << |
| so->output[i].start_component; |
| fprintf(stderr, " %i: BUF%i[%i..%i] <- OUT[%i].%s%s%s%s\n", |
| i, so->output[i].output_buffer, |
| so->output[i].dst_offset, so->output[i].dst_offset + so->output[i].num_components - 1, |
| so->output[i].register_index, |
| mask & 1 ? "x" : "", |
| mask & 2 ? "y" : "", |
| mask & 4 ? "z" : "", |
| mask & 8 ? "w" : ""); |
| } |
| } |
| |
| static void emit_streamout_output(struct si_shader_context *ctx, |
| LLVMValueRef const *so_buffers, |
| LLVMValueRef const *so_write_offsets, |
| struct pipe_stream_output *stream_out, |
| struct si_shader_output_values *shader_out) |
| { |
| struct gallivm_state *gallivm = &ctx->gallivm; |
| LLVMBuilderRef builder = gallivm->builder; |
| unsigned buf_idx = stream_out->output_buffer; |
| unsigned start = stream_out->start_component; |
| unsigned num_comps = stream_out->num_components; |
| LLVMValueRef out[4]; |
| |
| assert(num_comps && num_comps <= 4); |
| if (!num_comps || num_comps > 4) |
| return; |
| |
| /* Load the output as int. */ |
| for (int j = 0; j < num_comps; j++) { |
| assert(stream_out->stream == shader_out->vertex_stream[start + j]); |
| |
| out[j] = LLVMBuildBitCast(builder, |
| shader_out->values[start + j], |
| ctx->i32, ""); |
| } |
| |
| /* Pack the output. */ |
| LLVMValueRef vdata = NULL; |
| |
| switch (num_comps) { |
| case 1: /* as i32 */ |
| vdata = out[0]; |
| break; |
| case 2: /* as v2i32 */ |
| case 3: /* as v4i32 (aligned to 4) */ |
| case 4: /* as v4i32 */ |
| vdata = LLVMGetUndef(LLVMVectorType(ctx->i32, util_next_power_of_two(num_comps))); |
| for (int j = 0; j < num_comps; j++) { |
| vdata = LLVMBuildInsertElement(builder, vdata, out[j], |
| LLVMConstInt(ctx->i32, j, 0), ""); |
| } |
| break; |
| } |
| |
| build_tbuffer_store_dwords(ctx, so_buffers[buf_idx], |
| vdata, num_comps, |
| so_write_offsets[buf_idx], |
| LLVMConstInt(ctx->i32, 0, 0), |
| stream_out->dst_offset * 4); |
| } |
| |
| /** |
| * Write streamout data to buffers for vertex stream @p stream (different |
| * vertex streams can occur for GS copy shaders). |
| */ |
| static void si_llvm_emit_streamout(struct si_shader_context *ctx, |
| struct si_shader_output_values *outputs, |
| unsigned noutput, unsigned stream) |
| { |
| struct si_shader_selector *sel = ctx->shader->selector; |
| struct pipe_stream_output_info *so = &sel->so; |
| struct gallivm_state *gallivm = &ctx->gallivm; |
| LLVMBuilderRef builder = gallivm->builder; |
| int i; |
| struct lp_build_if_state if_ctx; |
| |
| /* Get bits [22:16], i.e. (so_param >> 16) & 127; */ |
| LLVMValueRef so_vtx_count = |
| unpack_param(ctx, ctx->param_streamout_config, 16, 7); |
| |
| LLVMValueRef tid = get_thread_id(ctx); |
| |
| /* can_emit = tid < so_vtx_count; */ |
| LLVMValueRef can_emit = |
| LLVMBuildICmp(builder, LLVMIntULT, tid, so_vtx_count, ""); |
| |
| /* Emit the streamout code conditionally. This actually avoids |
| * out-of-bounds buffer access. The hw tells us via the SGPR |
| * (so_vtx_count) which threads are allowed to emit streamout data. */ |
| lp_build_if(&if_ctx, gallivm, can_emit); |
| { |
| /* The buffer offset is computed as follows: |
| * ByteOffset = streamout_offset[buffer_id]*4 + |
| * (streamout_write_index + thread_id)*stride[buffer_id] + |
| * attrib_offset |
| */ |
| |
| LLVMValueRef so_write_index = |
| LLVMGetParam(ctx->main_fn, |
| ctx->param_streamout_write_index); |
| |
| /* Compute (streamout_write_index + thread_id). */ |
| so_write_index = LLVMBuildAdd(builder, so_write_index, tid, ""); |
| |
| /* Load the descriptor and compute the write offset for each |
| * enabled buffer. */ |
| LLVMValueRef so_write_offset[4] = {}; |
| LLVMValueRef so_buffers[4]; |
| LLVMValueRef buf_ptr = LLVMGetParam(ctx->main_fn, |
| SI_PARAM_RW_BUFFERS); |
| |
| for (i = 0; i < 4; i++) { |
| if (!so->stride[i]) |
| continue; |
| |
| LLVMValueRef offset = lp_build_const_int32(gallivm, |
| SI_VS_STREAMOUT_BUF0 + i); |
| |
| so_buffers[i] = build_indexed_load_const(ctx, buf_ptr, offset); |
| |
| LLVMValueRef so_offset = LLVMGetParam(ctx->main_fn, |
| ctx->param_streamout_offset[i]); |
| so_offset = LLVMBuildMul(builder, so_offset, LLVMConstInt(ctx->i32, 4, 0), ""); |
| |
| so_write_offset[i] = LLVMBuildMul(builder, so_write_index, |
| LLVMConstInt(ctx->i32, so->stride[i]*4, 0), ""); |
| so_write_offset[i] = LLVMBuildAdd(builder, so_write_offset[i], so_offset, ""); |
| } |
| |
| /* Write streamout data. */ |
| for (i = 0; i < so->num_outputs; i++) { |
| unsigned reg = so->output[i].register_index; |
| |
| if (reg >= noutput) |
| continue; |
| |
| if (stream != so->output[i].stream) |
| continue; |
| |
| emit_streamout_output(ctx, so_buffers, so_write_offset, |
| &so->output[i], &outputs[reg]); |
| } |
| } |
| lp_build_endif(&if_ctx); |
| } |
| |
| |
| /* Generate export instructions for hardware VS shader stage */ |
| static void si_llvm_export_vs(struct lp_build_tgsi_context *bld_base, |
| struct si_shader_output_values *outputs, |
| unsigned noutput) |
| { |
| struct si_shader_context *ctx = si_shader_context(bld_base); |
| struct si_shader *shader = ctx->shader; |
| struct lp_build_context *base = &bld_base->base; |
| struct lp_build_context *uint = &ctx->bld_base.uint_bld; |
| LLVMValueRef args[9]; |
| LLVMValueRef pos_args[4][9] = { { 0 } }; |
| LLVMValueRef psize_value = NULL, edgeflag_value = NULL, layer_value = NULL, viewport_index_value = NULL; |
| unsigned semantic_name, semantic_index; |
| unsigned target; |
| unsigned param_count = 0; |
| unsigned pos_idx; |
| int i; |
| |
| for (i = 0; i < noutput; i++) { |
| semantic_name = outputs[i].semantic_name; |
| semantic_index = outputs[i].semantic_index; |
| bool export_param = true; |
| |
| switch (semantic_name) { |
| case TGSI_SEMANTIC_POSITION: /* ignore these */ |
| case TGSI_SEMANTIC_PSIZE: |
| case TGSI_SEMANTIC_CLIPVERTEX: |
| case TGSI_SEMANTIC_EDGEFLAG: |
| break; |
| case TGSI_SEMANTIC_GENERIC: |
| case TGSI_SEMANTIC_CLIPDIST: |
| if (shader->key.opt.hw_vs.kill_outputs & |
| (1ull << si_shader_io_get_unique_index(semantic_name, semantic_index))) |
| export_param = false; |
| break; |
| default: |
| if (shader->key.opt.hw_vs.kill_outputs2 & |
| (1u << si_shader_io_get_unique_index2(semantic_name, semantic_index))) |
| export_param = false; |
| break; |
| } |
| |
| if (outputs[i].vertex_stream[0] != 0 && |
| outputs[i].vertex_stream[1] != 0 && |
| outputs[i].vertex_stream[2] != 0 && |
| outputs[i].vertex_stream[3] != 0) |
| export_param = false; |
| |
| handle_semantic: |
| /* Select the correct target */ |
| switch(semantic_name) { |
| case TGSI_SEMANTIC_PSIZE: |
| psize_value = outputs[i].values[0]; |
| continue; |
| case TGSI_SEMANTIC_EDGEFLAG: |
| edgeflag_value = outputs[i].values[0]; |
| continue; |
| case TGSI_SEMANTIC_LAYER: |
| layer_value = outputs[i].values[0]; |
| semantic_name = TGSI_SEMANTIC_GENERIC; |
| goto handle_semantic; |
| case TGSI_SEMANTIC_VIEWPORT_INDEX: |
| viewport_index_value = outputs[i].values[0]; |
| semantic_name = TGSI_SEMANTIC_GENERIC; |
| goto handle_semantic; |
| case TGSI_SEMANTIC_POSITION: |
| target = V_008DFC_SQ_EXP_POS; |
| break; |
| case TGSI_SEMANTIC_CLIPDIST: |
| if (shader->key.opt.hw_vs.clip_disable) { |
| semantic_name = TGSI_SEMANTIC_GENERIC; |
| goto handle_semantic; |
| } |
| target = V_008DFC_SQ_EXP_POS + 2 + semantic_index; |
| break; |
| case TGSI_SEMANTIC_CLIPVERTEX: |
| if (shader->key.opt.hw_vs.clip_disable) |
| continue; |
| si_llvm_emit_clipvertex(bld_base, pos_args, outputs[i].values); |
| continue; |
| case TGSI_SEMANTIC_COLOR: |
| case TGSI_SEMANTIC_BCOLOR: |
| case TGSI_SEMANTIC_PRIMID: |
| case TGSI_SEMANTIC_FOG: |
| case TGSI_SEMANTIC_TEXCOORD: |
| case TGSI_SEMANTIC_GENERIC: |
| if (!export_param) |
| continue; |
| target = V_008DFC_SQ_EXP_PARAM + param_count; |
| assert(i < ARRAY_SIZE(shader->info.vs_output_param_offset)); |
| shader->info.vs_output_param_offset[i] = param_count; |
| param_count++; |
| break; |
| default: |
| target = 0; |
| fprintf(stderr, |
| "Warning: SI unhandled vs output type:%d\n", |
| semantic_name); |
| } |
| |
| si_llvm_init_export_args(bld_base, outputs[i].values, target, args); |
| |
| if (target >= V_008DFC_SQ_EXP_POS && |
| target <= (V_008DFC_SQ_EXP_POS + 3)) { |
| memcpy(pos_args[target - V_008DFC_SQ_EXP_POS], |
| args, sizeof(args)); |
| } else { |
| lp_build_intrinsic(base->gallivm->builder, |
| "llvm.SI.export", ctx->voidt, |
| args, 9, 0); |
| } |
| |
| if (semantic_name == TGSI_SEMANTIC_CLIPDIST) { |
| semantic_name = TGSI_SEMANTIC_GENERIC; |
| goto handle_semantic; |
| } |
| } |
| |
| shader->info.nr_param_exports = param_count; |
| |
| /* We need to add the position output manually if it's missing. */ |
| if (!pos_args[0][0]) { |
| pos_args[0][0] = lp_build_const_int32(base->gallivm, 0xf); /* writemask */ |
| pos_args[0][1] = uint->zero; /* EXEC mask */ |
| pos_args[0][2] = uint->zero; /* last export? */ |
| pos_args[0][3] = lp_build_const_int32(base->gallivm, V_008DFC_SQ_EXP_POS); |
| pos_args[0][4] = uint->zero; /* COMPR flag */ |
| pos_args[0][5] = base->zero; /* X */ |
| pos_args[0][6] = base->zero; /* Y */ |
| pos_args[0][7] = base->zero; /* Z */ |
| pos_args[0][8] = base->one; /* W */ |
| } |
| |
| /* Write the misc vector (point size, edgeflag, layer, viewport). */ |
| if (shader->selector->info.writes_psize || |
| shader->selector->info.writes_edgeflag || |
| shader->selector->info.writes_viewport_index || |
| shader->selector->info.writes_layer) { |
| pos_args[1][0] = lp_build_const_int32(base->gallivm, /* writemask */ |
| shader->selector->info.writes_psize | |
| (shader->selector->info.writes_edgeflag << 1) | |
| (shader->selector->info.writes_layer << 2) | |
| (shader->selector->info.writes_viewport_index << 3)); |
| pos_args[1][1] = uint->zero; /* EXEC mask */ |
| pos_args[1][2] = uint->zero; /* last export? */ |
| pos_args[1][3] = lp_build_const_int32(base->gallivm, V_008DFC_SQ_EXP_POS + 1); |
| pos_args[1][4] = uint->zero; /* COMPR flag */ |
| pos_args[1][5] = base->zero; /* X */ |
| pos_args[1][6] = base->zero; /* Y */ |
| pos_args[1][7] = base->zero; /* Z */ |
| pos_args[1][8] = base->zero; /* W */ |
| |
| if (shader->selector->info.writes_psize) |
| pos_args[1][5] = psize_value; |
| |
| if (shader->selector->info.writes_edgeflag) { |
| /* The output is a float, but the hw expects an integer |
| * with the first bit containing the edge flag. */ |
| edgeflag_value = LLVMBuildFPToUI(base->gallivm->builder, |
| edgeflag_value, |
| ctx->i32, ""); |
| edgeflag_value = lp_build_min(&bld_base->int_bld, |
| edgeflag_value, |
| bld_base->int_bld.one); |
| |
| /* The LLVM intrinsic expects a float. */ |
| pos_args[1][6] = LLVMBuildBitCast(base->gallivm->builder, |
| edgeflag_value, |
| ctx->f32, ""); |
| } |
| |
| if (shader->selector->info.writes_layer) |
| pos_args[1][7] = layer_value; |
| |
| if (shader->selector->info.writes_viewport_index) |
| pos_args[1][8] = viewport_index_value; |
| } |
| |
| for (i = 0; i < 4; i++) |
| if (pos_args[i][0]) |
| shader->info.nr_pos_exports++; |
| |
| pos_idx = 0; |
| for (i = 0; i < 4; i++) { |
| if (!pos_args[i][0]) |
| continue; |
| |
| /* Specify the target we are exporting */ |
| pos_args[i][3] = lp_build_const_int32(base->gallivm, V_008DFC_SQ_EXP_POS + pos_idx++); |
| |
| if (pos_idx == shader->info.nr_pos_exports) |
| /* Specify that this is the last export */ |
| pos_args[i][2] = uint->one; |
| |
| lp_build_intrinsic(base->gallivm->builder, "llvm.SI.export", |
| ctx->voidt, pos_args[i], 9, 0); |
| } |
| } |
| |
| /** |
| * Forward all outputs from the vertex shader to the TES. This is only used |
| * for the fixed function TCS. |
| */ |
| static void si_copy_tcs_inputs(struct lp_build_tgsi_context *bld_base) |
| { |
| struct si_shader_context *ctx = si_shader_context(bld_base); |
| struct gallivm_state *gallivm = bld_base->base.gallivm; |
| LLVMValueRef invocation_id, rw_buffers, buffer, buffer_offset; |
| LLVMValueRef lds_vertex_stride, lds_vertex_offset, lds_base; |
| uint64_t inputs; |
| |
| invocation_id = unpack_param(ctx, SI_PARAM_REL_IDS, 8, 5); |
| |
| rw_buffers = LLVMGetParam(ctx->main_fn, SI_PARAM_RW_BUFFERS); |
| buffer = build_indexed_load_const(ctx, rw_buffers, |
| lp_build_const_int32(gallivm, SI_HS_RING_TESS_OFFCHIP)); |
| |
| buffer_offset = LLVMGetParam(ctx->main_fn, ctx->param_oc_lds); |
| |
| lds_vertex_stride = unpack_param(ctx, SI_PARAM_TCS_IN_LAYOUT, 13, 8); |
| lds_vertex_offset = LLVMBuildMul(gallivm->builder, invocation_id, |
| lds_vertex_stride, ""); |
| lds_base = get_tcs_in_current_patch_offset(ctx); |
| lds_base = LLVMBuildAdd(gallivm->builder, lds_base, lds_vertex_offset, ""); |
| |
| inputs = ctx->shader->key.mono.tcs.inputs_to_copy; |
| while (inputs) { |
| unsigned i = u_bit_scan64(&inputs); |
| |
| LLVMValueRef lds_ptr = LLVMBuildAdd(gallivm->builder, lds_base, |
| lp_build_const_int32(gallivm, 4 * i), |
| ""); |
| |
| LLVMValueRef buffer_addr = get_tcs_tes_buffer_address(ctx, |
| invocation_id, |
| lp_build_const_int32(gallivm, i)); |
| |
| LLVMValueRef value = lds_load(bld_base, TGSI_TYPE_SIGNED, ~0, |
| lds_ptr); |
| |
| build_tbuffer_store_dwords(ctx, buffer, value, 4, buffer_addr, |
| buffer_offset, 0); |
| } |
| } |
| |
| static void si_write_tess_factors(struct lp_build_tgsi_context *bld_base, |
| LLVMValueRef rel_patch_id, |
| LLVMValueRef invocation_id, |
| LLVMValueRef tcs_out_current_patch_data_offset) |
| { |
| struct si_shader_context *ctx = si_shader_context(bld_base); |
| struct gallivm_state *gallivm = bld_base->base.gallivm; |
| struct si_shader *shader = ctx->shader; |
| unsigned tess_inner_index, tess_outer_index; |
| LLVMValueRef lds_base, lds_inner, lds_outer, byteoffset, buffer; |
| LLVMValueRef out[6], vec0, vec1, rw_buffers, tf_base; |
| unsigned stride, outer_comps, inner_comps, i; |
| struct lp_build_if_state if_ctx, inner_if_ctx; |
| |
| si_llvm_emit_barrier(NULL, bld_base, NULL); |
| |
| /* Do this only for invocation 0, because the tess levels are per-patch, |
| * not per-vertex. |
| * |
| * This can't jump, because invocation 0 executes this. It should |
| * at least mask out the loads and stores for other invocations. |
| */ |
| lp_build_if(&if_ctx, gallivm, |
| LLVMBuildICmp(gallivm->builder, LLVMIntEQ, |
| invocation_id, bld_base->uint_bld.zero, "")); |
| |
| /* Determine the layout of one tess factor element in the buffer. */ |
| switch (shader->key.part.tcs.epilog.prim_mode) { |
| case PIPE_PRIM_LINES: |
| stride = 2; /* 2 dwords, 1 vec2 store */ |
| outer_comps = 2; |
| inner_comps = 0; |
| break; |
| case PIPE_PRIM_TRIANGLES: |
| stride = 4; /* 4 dwords, 1 vec4 store */ |
| outer_comps = 3; |
| inner_comps = 1; |
| break; |
| case PIPE_PRIM_QUADS: |
| stride = 6; /* 6 dwords, 2 stores (vec4 + vec2) */ |
| outer_comps = 4; |
| inner_comps = 2; |
| break; |
| default: |
| assert(0); |
| return; |
| } |
| |
| /* Load tess_inner and tess_outer from LDS. |
| * Any invocation can write them, so we can't get them from a temporary. |
| */ |
| tess_inner_index = si_shader_io_get_unique_index(TGSI_SEMANTIC_TESSINNER, 0); |
| tess_outer_index = si_shader_io_get_unique_index(TGSI_SEMANTIC_TESSOUTER, 0); |
| |
| lds_base = tcs_out_current_patch_data_offset; |
| lds_inner = LLVMBuildAdd(gallivm->builder, lds_base, |
| lp_build_const_int32(gallivm, |
| tess_inner_index * 4), ""); |
| lds_outer = LLVMBuildAdd(gallivm->builder, lds_base, |
| lp_build_const_int32(gallivm, |
| tess_outer_index * 4), ""); |
| |
| if (shader->key.part.tcs.epilog.prim_mode == PIPE_PRIM_LINES) { |
| /* For isolines, the hardware expects tess factors in the |
| * reverse order from what GLSL / TGSI specify. |
| */ |
| out[0] = lds_load(bld_base, TGSI_TYPE_SIGNED, 1, lds_outer); |
| out[1] = lds_load(bld_base, TGSI_TYPE_SIGNED, 0, lds_outer); |
| } else { |
| for (i = 0; i < outer_comps; i++) |
| out[i] = lds_load(bld_base, TGSI_TYPE_SIGNED, i, lds_outer); |
| for (i = 0; i < inner_comps; i++) |
| out[outer_comps+i] = lds_load(bld_base, TGSI_TYPE_SIGNED, i, lds_inner); |
| } |
| |
| /* Convert the outputs to vectors for stores. */ |
| vec0 = lp_build_gather_values(gallivm, out, MIN2(stride, 4)); |
| vec1 = NULL; |
| |
| if (stride > 4) |
| vec1 = lp_build_gather_values(gallivm, out+4, stride - 4); |
| |
| /* Get the buffer. */ |
| rw_buffers = LLVMGetParam(ctx->main_fn, |
| SI_PARAM_RW_BUFFERS); |
| buffer = build_indexed_load_const(ctx, rw_buffers, |
| lp_build_const_int32(gallivm, SI_HS_RING_TESS_FACTOR)); |
| |
| /* Get the offset. */ |
| tf_base = LLVMGetParam(ctx->main_fn, |
| SI_PARAM_TESS_FACTOR_OFFSET); |
| byteoffset = LLVMBuildMul(gallivm->builder, rel_patch_id, |
| lp_build_const_int32(gallivm, 4 * stride), ""); |
| |
| lp_build_if(&inner_if_ctx, gallivm, |
| LLVMBuildICmp(gallivm->builder, LLVMIntEQ, |
| rel_patch_id, bld_base->uint_bld.zero, "")); |
| |
| /* Store the dynamic HS control word. */ |
| build_tbuffer_store_dwords(ctx, buffer, |
| lp_build_const_int32(gallivm, 0x80000000), |
| 1, lp_build_const_int32(gallivm, 0), tf_base, 0); |
| |
| lp_build_endif(&inner_if_ctx); |
| |
| /* Store the tessellation factors. */ |
| build_tbuffer_store_dwords(ctx, buffer, vec0, |
| MIN2(stride, 4), byteoffset, tf_base, 4); |
| if (vec1) |
| build_tbuffer_store_dwords(ctx, buffer, vec1, |
| stride - 4, byteoffset, tf_base, 20); |
| lp_build_endif(&if_ctx); |
| } |
| |
| /* This only writes the tessellation factor levels. */ |
| static void si_llvm_emit_tcs_epilogue(struct lp_build_tgsi_context *bld_base) |
| { |
| struct si_shader_context *ctx = si_shader_context(bld_base); |
| LLVMValueRef rel_patch_id, invocation_id, tf_lds_offset; |
| |
| si_copy_tcs_inputs(bld_base); |
| |
| rel_patch_id = get_rel_patch_id(ctx); |
| invocation_id = unpack_param(ctx, SI_PARAM_REL_IDS, 8, 5); |
| tf_lds_offset = get_tcs_out_current_patch_data_offset(ctx); |
| |
| /* Return epilog parameters from this function. */ |
| LLVMBuilderRef builder = bld_base->base.gallivm->builder; |
| LLVMValueRef ret = ctx->return_value; |
| LLVMValueRef rw_buffers, rw0, rw1, tf_soffset; |
| unsigned vgpr; |
| |
| /* RW_BUFFERS pointer */ |
| rw_buffers = LLVMGetParam(ctx->main_fn, |
| SI_PARAM_RW_BUFFERS); |
| rw_buffers = LLVMBuildPtrToInt(builder, rw_buffers, ctx->i64, ""); |
| rw_buffers = LLVMBuildBitCast(builder, rw_buffers, ctx->v2i32, ""); |
| rw0 = LLVMBuildExtractElement(builder, rw_buffers, |
| bld_base->uint_bld.zero, ""); |
| rw1 = LLVMBuildExtractElement(builder, rw_buffers, |
| bld_base->uint_bld.one, ""); |
| ret = LLVMBuildInsertValue(builder, ret, rw0, 0, ""); |
| ret = LLVMBuildInsertValue(builder, ret, rw1, 1, ""); |
| |
| /* Tess factor buffer soffset is after user SGPRs. */ |
| tf_soffset = LLVMGetParam(ctx->main_fn, |
| SI_PARAM_TESS_FACTOR_OFFSET); |
| ret = LLVMBuildInsertValue(builder, ret, tf_soffset, |
| SI_TCS_NUM_USER_SGPR + 1, ""); |
| |
| /* VGPRs */ |
| rel_patch_id = bitcast(bld_base, TGSI_TYPE_FLOAT, rel_patch_id); |
| invocation_id = bitcast(bld_base, TGSI_TYPE_FLOAT, invocation_id); |
| tf_lds_offset = bitcast(bld_base, TGSI_TYPE_FLOAT, tf_lds_offset); |
| |
| vgpr = SI_TCS_NUM_USER_SGPR + 2; |
| ret = LLVMBuildInsertValue(builder, ret, rel_patch_id, vgpr++, ""); |
| ret = LLVMBuildInsertValue(builder, ret, invocation_id, vgpr++, ""); |
| ret = LLVMBuildInsertValue(builder, ret, tf_lds_offset, vgpr++, ""); |
| ctx->return_value = ret; |
| } |
| |
| static void si_llvm_emit_ls_epilogue(struct lp_build_tgsi_context *bld_base) |
| { |
| struct si_shader_context *ctx = si_shader_context(bld_base); |
| struct si_shader *shader = ctx->shader; |
| struct tgsi_shader_info *info = &shader->selector->info; |
| struct gallivm_state *gallivm = bld_base->base.gallivm; |
| unsigned i, chan; |
| LLVMValueRef vertex_id = LLVMGetParam(ctx->main_fn, |
| ctx->param_rel_auto_id); |
| LLVMValueRef vertex_dw_stride = |
| unpack_param(ctx, SI_PARAM_LS_OUT_LAYOUT, 13, 8); |
| LLVMValueRef base_dw_addr = LLVMBuildMul(gallivm->builder, vertex_id, |
| vertex_dw_stride, ""); |
| |
| /* Write outputs to LDS. The next shader (TCS aka HS) will read |
| * its inputs from it. */ |
| for (i = 0; i < info->num_outputs; i++) { |
| LLVMValueRef *out_ptr = ctx->outputs[i]; |
| unsigned name = info->output_semantic_name[i]; |
| unsigned index = info->output_semantic_index[i]; |
| int param = si_shader_io_get_unique_index(name, index); |
| LLVMValueRef dw_addr = LLVMBuildAdd(gallivm->builder, base_dw_addr, |
| lp_build_const_int32(gallivm, param * 4), ""); |
| |
| for (chan = 0; chan < 4; chan++) { |
| lds_store(bld_base, chan, dw_addr, |
| LLVMBuildLoad(gallivm->builder, out_ptr[chan], "")); |
| } |
| } |
| } |
| |
| static void si_llvm_emit_es_epilogue(struct lp_build_tgsi_context *bld_base) |
| { |
| struct si_shader_context *ctx = si_shader_context(bld_base); |
| struct gallivm_state *gallivm = bld_base->base.gallivm; |
| struct si_shader *es = ctx->shader; |
| struct tgsi_shader_info *info = &es->selector->info; |
| LLVMValueRef soffset = LLVMGetParam(ctx->main_fn, |
| ctx->param_es2gs_offset); |
| unsigned chan; |
| int i; |
| |
| for (i = 0; i < info->num_outputs; i++) { |
| LLVMValueRef *out_ptr = ctx->outputs[i]; |
| int param_index; |
| |
| if (info->output_semantic_name[i] == TGSI_SEMANTIC_VIEWPORT_INDEX || |
| info->output_semantic_name[i] == TGSI_SEMANTIC_LAYER) |
| continue; |
| |
| param_index = si_shader_io_get_unique_index(info->output_semantic_name[i], |
| info->output_semantic_index[i]); |
| |
| for (chan = 0; chan < 4; chan++) { |
| LLVMValueRef out_val = LLVMBuildLoad(gallivm->builder, out_ptr[chan], ""); |
| out_val = LLVMBuildBitCast(gallivm->builder, out_val, ctx->i32, ""); |
| |
| build_tbuffer_store(ctx, |
| ctx->esgs_ring, |
| out_val, 1, |
| LLVMGetUndef(ctx->i32), soffset, |
| (4 * param_index + chan) * 4, |
| V_008F0C_BUF_DATA_FORMAT_32, |
| V_008F0C_BUF_NUM_FORMAT_UINT, |
| 0, 0, 1, 1, 0); |
| } |
| } |
| } |
| |
| static void si_llvm_emit_gs_epilogue(struct lp_build_tgsi_context *bld_base) |
| { |
| struct si_shader_context *ctx = si_shader_context(bld_base); |
| struct gallivm_state *gallivm = bld_base->base.gallivm; |
| LLVMValueRef args[2]; |
| |
| args[0] = lp_build_const_int32(gallivm, SENDMSG_GS_OP_NOP | SENDMSG_GS_DONE); |
| args[1] = LLVMGetParam(ctx->main_fn, SI_PARAM_GS_WAVE_ID); |
| lp_build_intrinsic(gallivm->builder, "llvm.SI.sendmsg", |
| ctx->voidt, args, 2, 0); |
| } |
| |
| static void si_llvm_emit_vs_epilogue(struct lp_build_tgsi_context *bld_base) |
| { |
| struct si_shader_context *ctx = si_shader_context(bld_base); |
| struct gallivm_state *gallivm = bld_base->base.gallivm; |
| struct tgsi_shader_info *info = &ctx->shader->selector->info; |
| struct si_shader_output_values *outputs = NULL; |
| int i,j; |
| |
| assert(!ctx->shader->is_gs_copy_shader); |
| |
| outputs = MALLOC((info->num_outputs + 1) * sizeof(outputs[0])); |
| |
| /* Vertex color clamping. |
| * |
| * This uses a state constant loaded in a user data SGPR and |
| * an IF statement is added that clamps all colors if the constant |
| * is true. |
| */ |
| if (ctx->type == PIPE_SHADER_VERTEX) { |
| struct lp_build_if_state if_ctx; |
| LLVMValueRef cond = NULL; |
| LLVMValueRef addr, val; |
| |
| for (i = 0; i < info->num_outputs; i++) { |
| if (info->output_semantic_name[i] != TGSI_SEMANTIC_COLOR && |
| info->output_semantic_name[i] != TGSI_SEMANTIC_BCOLOR) |
| continue; |
| |
| /* We've found a color. */ |
| if (!cond) { |
| /* The state is in the first bit of the user SGPR. */ |
| cond = LLVMGetParam(ctx->main_fn, |
| SI_PARAM_VS_STATE_BITS); |
| cond = LLVMBuildTrunc(gallivm->builder, cond, |
| ctx->i1, ""); |
| lp_build_if(&if_ctx, gallivm, cond); |
| } |
| |
| for (j = 0; j < 4; j++) { |
| addr = ctx->outputs[i][j]; |
| val = LLVMBuildLoad(gallivm->builder, addr, ""); |
| val = si_llvm_saturate(bld_base, val); |
| LLVMBuildStore(gallivm->builder, val, addr); |
| } |
| } |
| |
| if (cond) |
| lp_build_endif(&if_ctx); |
| } |
| |
| for (i = 0; i < info->num_outputs; i++) { |
| outputs[i].semantic_name = info->output_semantic_name[i]; |
| outputs[i].semantic_index = info->output_semantic_index[i]; |
| |
| for (j = 0; j < 4; j++) { |
| outputs[i].values[j] = |
| LLVMBuildLoad(gallivm->builder, |
| ctx->outputs[i][j], |
| ""); |
| outputs[i].vertex_stream[j] = |
| (info->output_streams[i] >> (2 * j)) & 3; |
| } |
| |
| } |
| |
| /* Return the primitive ID from the LLVM function. */ |
| ctx->return_value = |
| LLVMBuildInsertValue(gallivm->builder, |
| ctx->return_value, |
| bitcast(bld_base, TGSI_TYPE_FLOAT, |
| get_primitive_id(bld_base, 0)), |
| VS_EPILOG_PRIMID_LOC, ""); |
| |
| if (ctx->shader->selector->so.num_outputs) |
| si_llvm_emit_streamout(ctx, outputs, i, 0); |
| si_llvm_export_vs(bld_base, outputs, i); |
| FREE(outputs); |
| } |
| |
| struct si_ps_exports { |
| unsigned num; |
| LLVMValueRef args[10][9]; |
| }; |
| |
| unsigned si_get_spi_shader_z_format(bool writes_z, bool writes_stencil, |
| bool writes_samplemask) |
| { |
| if (writes_z) { |
| /* Z needs 32 bits. */ |
| if (writes_samplemask) |
| return V_028710_SPI_SHADER_32_ABGR; |
| else if (writes_stencil) |
| return V_028710_SPI_SHADER_32_GR; |
| else |
| return V_028710_SPI_SHADER_32_R; |
| } else if (writes_stencil || writes_samplemask) { |
| /* Both stencil and sample mask need only 16 bits. */ |
| return V_028710_SPI_SHADER_UINT16_ABGR; |
| } else { |
| return V_028710_SPI_SHADER_ZERO; |
| } |
| } |
| |
| static void si_export_mrt_z(struct lp_build_tgsi_context *bld_base, |
| LLVMValueRef depth, LLVMValueRef stencil, |
| LLVMValueRef samplemask, struct si_ps_exports *exp) |
| { |
| struct si_shader_context *ctx = si_shader_context(bld_base); |
| struct lp_build_context *base = &bld_base->base; |
| struct lp_build_context *uint = &bld_base->uint_bld; |
| LLVMValueRef args[9]; |
| unsigned mask = 0; |
| unsigned format = si_get_spi_shader_z_format(depth != NULL, |
| stencil != NULL, |
| samplemask != NULL); |
| |
| assert(depth || stencil || samplemask); |
| |
| args[1] = uint->one; /* whether the EXEC mask is valid */ |
| args[2] = uint->one; /* DONE bit */ |
| |
| /* Specify the target we are exporting */ |
| args[3] = lp_build_const_int32(base->gallivm, V_008DFC_SQ_EXP_MRTZ); |
| |
| args[4] = uint->zero; /* COMP flag */ |
| args[5] = base->undef; /* R, depth */ |
| args[6] = base->undef; /* G, stencil test value[0:7], stencil op value[8:15] */ |
| args[7] = base->undef; /* B, sample mask */ |
| args[8] = base->undef; /* A, alpha to mask */ |
| |
| if (format == V_028710_SPI_SHADER_UINT16_ABGR) { |
| assert(!depth); |
| args[4] = uint->one; /* COMPR flag */ |
| |
| if (stencil) { |
| /* Stencil should be in X[23:16]. */ |
| stencil = bitcast(bld_base, TGSI_TYPE_UNSIGNED, stencil); |
| stencil = LLVMBuildShl(base->gallivm->builder, stencil, |
| LLVMConstInt(ctx->i32, 16, 0), ""); |
| args[5] = bitcast(bld_base, TGSI_TYPE_FLOAT, stencil); |
| mask |= 0x3; |
| } |
| if (samplemask) { |
| /* SampleMask should be in Y[15:0]. */ |
| args[6] = samplemask; |
| mask |= 0xc; |
| } |
| } else { |
| if (depth) { |
| args[5] = depth; |
| mask |= 0x1; |
| } |
| if (stencil) { |
| args[6] = stencil; |
| mask |= 0x2; |
| } |
| if (samplemask) { |
| args[7] = samplemask; |
| mask |= 0x4; |
| } |
| } |
| |
| /* SI (except OLAND and HAINAN) has a bug that it only looks |
| * at the X writemask component. */ |
| if (ctx->screen->b.chip_class == SI && |
| ctx->screen->b.family != CHIP_OLAND && |
| ctx->screen->b.family != CHIP_HAINAN) |
| mask |= 0x1; |
| |
| /* Specify which components to enable */ |
| args[0] = lp_build_const_int32(base->gallivm, mask); |
| |
| memcpy(exp->args[exp->num++], args, sizeof(args)); |
| } |
| |
| static void si_export_mrt_color(struct lp_build_tgsi_context *bld_base, |
| LLVMValueRef *color, unsigned index, |
| unsigned samplemask_param, |
| bool is_last, struct si_ps_exports *exp) |
| { |
| struct si_shader_context *ctx = si_shader_context(bld_base); |
| struct lp_build_context *base = &bld_base->base; |
| int i; |
| |
| /* Clamp color */ |
| if (ctx->shader->key.part.ps.epilog.clamp_color) |
| for (i = 0; i < 4; i++) |
| color[i] = si_llvm_saturate(bld_base, color[i]); |
| |
| /* Alpha to one */ |
| if (ctx->shader->key.part.ps.epilog.alpha_to_one) |
| color[3] = base->one; |
| |
| /* Alpha test */ |
| if (index == 0 && |
| ctx->shader->key.part.ps.epilog.alpha_func != PIPE_FUNC_ALWAYS) |
| si_alpha_test(bld_base, color[3]); |
| |
| /* Line & polygon smoothing */ |
| if (ctx->shader->key.part.ps.epilog.poly_line_smoothing) |
| color[3] = si_scale_alpha_by_sample_mask(bld_base, color[3], |
| samplemask_param); |
| |
| /* If last_cbuf > 0, FS_COLOR0_WRITES_ALL_CBUFS is true. */ |
| if (ctx->shader->key.part.ps.epilog.last_cbuf > 0) { |
| LLVMValueRef args[8][9]; |
| int c, last = -1; |
| |
| /* Get the export arguments, also find out what the last one is. */ |
| for (c = 0; c <= ctx->shader->key.part.ps.epilog.last_cbuf; c++) { |
| si_llvm_init_export_args(bld_base, color, |
| V_008DFC_SQ_EXP_MRT + c, args[c]); |
| if (args[c][0] != bld_base->uint_bld.zero) |
| last = c; |
| } |
| |
| /* Emit all exports. */ |
| for (c = 0; c <= ctx->shader->key.part.ps.epilog.last_cbuf; c++) { |
| if (is_last && last == c) { |
| args[c][1] = bld_base->uint_bld.one; /* whether the EXEC mask is valid */ |
| args[c][2] = bld_base->uint_bld.one; /* DONE bit */ |
| } else if (args[c][0] == bld_base->uint_bld.zero) |
| continue; /* unnecessary NULL export */ |
| |
| memcpy(exp->args[exp->num++], args[c], sizeof(args[c])); |
| } |
| } else { |
| LLVMValueRef args[9]; |
| |
| /* Export */ |
| si_llvm_init_export_args(bld_base, color, V_008DFC_SQ_EXP_MRT + index, |
| args); |
| if (is_last) { |
| args[1] = bld_base->uint_bld.one; /* whether the EXEC mask is valid */ |
| args[2] = bld_base->uint_bld.one; /* DONE bit */ |
| } else if (args[0] == bld_base->uint_bld.zero) |
| return; /* unnecessary NULL export */ |
| |
| memcpy(exp->args[exp->num++], args, sizeof(args)); |
| } |
| } |
| |
| static void si_emit_ps_exports(struct si_shader_context *ctx, |
| struct si_ps_exports *exp) |
| { |
| for (unsigned i = 0; i < exp->num; i++) |
| lp_build_intrinsic(ctx->gallivm.builder, |
| "llvm.SI.export", ctx->voidt, |
| exp->args[i], 9, 0); |
| } |
| |
| static void si_export_null(struct lp_build_tgsi_context *bld_base) |
| { |
| struct si_shader_context *ctx = si_shader_context(bld_base); |
| struct lp_build_context *base = &bld_base->base; |
| struct lp_build_context *uint = &bld_base->uint_bld; |
| LLVMValueRef args[9]; |
| |
| args[0] = lp_build_const_int32(base->gallivm, 0x0); /* enabled channels */ |
| args[1] = uint->one; /* whether the EXEC mask is valid */ |
| args[2] = uint->one; /* DONE bit */ |
| args[3] = lp_build_const_int32(base->gallivm, V_008DFC_SQ_EXP_NULL); |
| args[4] = uint->zero; /* COMPR flag (0 = 32-bit export) */ |
| args[5] = base->undef; /* R */ |
| args[6] = base->undef; /* G */ |
| args[7] = base->undef; /* B */ |
| args[8] = base->undef; /* A */ |
| |
| lp_build_intrinsic(base->gallivm->builder, "llvm.SI.export", |
| ctx->voidt, args, 9, 0); |
| } |
| |
| /** |
| * Return PS outputs in this order: |
| * |
| * v[0:3] = color0.xyzw |
| * v[4:7] = color1.xyzw |
| * ... |
| * vN+0 = Depth |
| * vN+1 = Stencil |
| * vN+2 = SampleMask |
| * vN+3 = SampleMaskIn (used for OpenGL smoothing) |
| * |
| * The alpha-ref SGPR is returned via its original location. |
| */ |
| static void si_llvm_return_fs_outputs(struct lp_build_tgsi_context *bld_base) |
| { |
| struct si_shader_context *ctx = si_shader_context(bld_base); |
| struct si_shader *shader = ctx->shader; |
| struct lp_build_context *base = &bld_base->base; |
| struct tgsi_shader_info *info = &shader->selector->info; |
| LLVMBuilderRef builder = base->gallivm->builder; |
| unsigned i, j, first_vgpr, vgpr; |
| |
| LLVMValueRef color[8][4] = {}; |
| LLVMValueRef depth = NULL, stencil = NULL, samplemask = NULL; |
| LLVMValueRef ret; |
| |
| /* Read the output values. */ |
| for (i = 0; i < info->num_outputs; i++) { |
| unsigned semantic_name = info->output_semantic_name[i]; |
| unsigned semantic_index = info->output_semantic_index[i]; |
| |
| switch (semantic_name) { |
| case TGSI_SEMANTIC_COLOR: |
| assert(semantic_index < 8); |
| for (j = 0; j < 4; j++) { |
| LLVMValueRef ptr = ctx->outputs[i][j]; |
| LLVMValueRef result = LLVMBuildLoad(builder, ptr, ""); |
| color[semantic_index][j] = result; |
| } |
| break; |
| case TGSI_SEMANTIC_POSITION: |
| depth = LLVMBuildLoad(builder, |
| ctx->outputs[i][2], ""); |
| break; |
| case TGSI_SEMANTIC_STENCIL: |
| stencil = LLVMBuildLoad(builder, |
| ctx->outputs[i][1], ""); |
| break; |
| case TGSI_SEMANTIC_SAMPLEMASK: |
| samplemask = LLVMBuildLoad(builder, |
| ctx->outputs[i][0], ""); |
| break; |
| default: |
| fprintf(stderr, "Warning: SI unhandled fs output type:%d\n", |
| semantic_name); |
| } |
| } |
| |
| /* Fill the return structure. */ |
| ret = ctx->return_value; |
| |
| /* Set SGPRs. */ |
| ret = LLVMBuildInsertValue(builder, ret, |
| bitcast(bld_base, TGSI_TYPE_SIGNED, |
| LLVMGetParam(ctx->main_fn, |
| SI_PARAM_ALPHA_REF)), |
| SI_SGPR_ALPHA_REF, ""); |
| |
| /* Set VGPRs */ |
| first_vgpr = vgpr = SI_SGPR_ALPHA_REF + 1; |
| for (i = 0; i < ARRAY_SIZE(color); i++) { |
| if (!color[i][0]) |
| continue; |
| |
| for (j = 0; j < 4; j++) |
| ret = LLVMBuildInsertValue(builder, ret, color[i][j], vgpr++, ""); |
| } |
| if (depth) |
| ret = LLVMBuildInsertValue(builder, ret, depth, vgpr++, ""); |
| if (stencil) |
| ret = LLVMBuildInsertValue(builder, ret, stencil, vgpr++, ""); |
| if (samplemask) |
| ret = LLVMBuildInsertValue(builder, ret, samplemask, vgpr++, ""); |
| |
| /* Add the input sample mask for smoothing at the end. */ |
| if (vgpr < first_vgpr + PS_EPILOG_SAMPLEMASK_MIN_LOC) |
| vgpr = first_vgpr + PS_EPILOG_SAMPLEMASK_MIN_LOC; |
| ret = LLVMBuildInsertValue(builder, ret, |
| LLVMGetParam(ctx->main_fn, |
| SI_PARAM_SAMPLE_COVERAGE), vgpr++, ""); |
| |
| ctx->return_value = ret; |
| } |
| |
| /** |
| * Given a v8i32 resource descriptor for a buffer, extract the size of the |
| * buffer in number of elements and return it as an i32. |
| */ |
| static LLVMValueRef get_buffer_size( |
| struct lp_build_tgsi_context *bld_base, |
| LLVMValueRef descriptor) |
| { |
| struct si_shader_context *ctx = si_shader_context(bld_base); |
| struct gallivm_state *gallivm = bld_base->base.gallivm; |
| LLVMBuilderRef builder = gallivm->builder; |
| LLVMValueRef size = |
| LLVMBuildExtractElement(builder, descriptor, |
| lp_build_const_int32(gallivm, 2), ""); |
| |
| if (ctx->screen->b.chip_class >= VI) { |
| /* On VI, the descriptor contains the size in bytes, |
| * but TXQ must return the size in elements. |
| * The stride is always non-zero for resources using TXQ. |
| */ |
| LLVMValueRef stride = |
| LLVMBuildExtractElement(builder, descriptor, |
| lp_build_const_int32(gallivm, 1), ""); |
| stride = LLVMBuildLShr(builder, stride, |
| lp_build_const_int32(gallivm, 16), ""); |
| stride = LLVMBuildAnd(builder, stride, |
| lp_build_const_int32(gallivm, 0x3FFF), ""); |
| |
| size = LLVMBuildUDiv(builder, size, stride, ""); |
| } |
| |
| return size; |
| } |
| |
| /** |
| * Given the i32 or vNi32 \p type, generate the textual name (e.g. for use with |
| * intrinsic names). |
| */ |
| static void build_type_name_for_intr( |
| LLVMTypeRef type, |
| char *buf, unsigned bufsize) |
| { |
| LLVMTypeRef elem_type = type; |
| |
| assert(bufsize >= 8); |
| |
| if (LLVMGetTypeKind(type) == LLVMVectorTypeKind) { |
| int ret = snprintf(buf, bufsize, "v%u", |
| LLVMGetVectorSize(type)); |
| if (ret < 0) { |
| char *type_name = LLVMPrintTypeToString(type); |
| fprintf(stderr, "Error building type name for: %s\n", |
| type_name); |
| return; |
| } |
| elem_type = LLVMGetElementType(type); |
| buf += ret; |
| bufsize -= ret; |
| } |
| switch (LLVMGetTypeKind(elem_type)) { |
| default: break; |
| case LLVMIntegerTypeKind: |
| snprintf(buf, bufsize, "i%d", LLVMGetIntTypeWidth(elem_type)); |
| break; |
| case LLVMFloatTypeKind: |
| snprintf(buf, bufsize, "f32"); |
| break; |
| case LLVMDoubleTypeKind: |
| snprintf(buf, bufsize, "f64"); |
| break; |
| } |
| } |
| |
| static void build_tex_intrinsic(const struct lp_build_tgsi_action *action, |
| struct lp_build_tgsi_context *bld_base, |
| struct lp_build_emit_data *emit_data); |
| |
| /* Prevent optimizations (at least of memory accesses) across the current |
| * point in the program by emitting empty inline assembly that is marked as |
| * having side effects. |
| */ |
| #if 0 /* unused currently */ |
| static void emit_optimization_barrier(struct si_shader_context *ctx) |
| { |
| LLVMBuilderRef builder = ctx->gallivm.builder; |
| LLVMTypeRef ftype = LLVMFunctionType(ctx->voidt, NULL, 0, false); |
| LLVMValueRef inlineasm = LLVMConstInlineAsm(ftype, "", "", true, false); |
| LLVMBuildCall(builder, inlineasm, NULL, 0, ""); |
| } |
| #endif |
| |
| /* Combine these with & instead of |. */ |
| #define NOOP_WAITCNT 0xf7f |
| #define LGKM_CNT 0x07f |
| #define VM_CNT 0xf70 |
| |
| static void emit_waitcnt(struct si_shader_context *ctx, unsigned simm16) |
| { |
| struct gallivm_state *gallivm = &ctx->gallivm; |
| LLVMBuilderRef builder = gallivm->builder; |
| LLVMValueRef args[1] = { |
| lp_build_const_int32(gallivm, simm16) |
| }; |
| lp_build_intrinsic(builder, "llvm.amdgcn.s.waitcnt", |
| ctx->voidt, args, 1, 0); |
| } |
| |
| static void membar_emit( |
| const struct lp_build_tgsi_action *action, |
| struct lp_build_tgsi_context *bld_base, |
| struct lp_build_emit_data *emit_data) |
| { |
| struct si_shader_context *ctx = si_shader_context(bld_base); |
| LLVMValueRef src0 = lp_build_emit_fetch(bld_base, emit_data->inst, 0, 0); |
| unsigned flags = LLVMConstIntGetZExtValue(src0); |
| unsigned waitcnt = NOOP_WAITCNT; |
| |
| if (flags & TGSI_MEMBAR_THREAD_GROUP) |
| waitcnt &= VM_CNT & LGKM_CNT; |
| |
| if (flags & (TGSI_MEMBAR_ATOMIC_BUFFER | |
| TGSI_MEMBAR_SHADER_BUFFER | |
| TGSI_MEMBAR_SHADER_IMAGE)) |
| waitcnt &= VM_CNT; |
| |
| if (flags & TGSI_MEMBAR_SHARED) |
| waitcnt &= LGKM_CNT; |
| |
| if (waitcnt != NOOP_WAITCNT) |
| emit_waitcnt(ctx, waitcnt); |
| } |
| |
| static LLVMValueRef |
| shader_buffer_fetch_rsrc(struct si_shader_context *ctx, |
| const struct tgsi_full_src_register *reg) |
| { |
| LLVMValueRef index; |
| LLVMValueRef rsrc_ptr = LLVMGetParam(ctx->main_fn, |
| SI_PARAM_SHADER_BUFFERS); |
| |
| if (!reg->Register.Indirect) |
| index = LLVMConstInt(ctx->i32, reg->Register.Index, 0); |
| else |
| index = get_bounded_indirect_index(ctx, ®->Indirect, |
| reg->Register.Index, |
| SI_NUM_SHADER_BUFFERS); |
| |
| return build_indexed_load_const(ctx, rsrc_ptr, index); |
| } |
| |
| static bool tgsi_is_array_sampler(unsigned target) |
| { |
| return target == TGSI_TEXTURE_1D_ARRAY || |
| target == TGSI_TEXTURE_SHADOW1D_ARRAY || |
| target == TGSI_TEXTURE_2D_ARRAY || |
| target == TGSI_TEXTURE_SHADOW2D_ARRAY || |
| target == TGSI_TEXTURE_CUBE_ARRAY || |
| target == TGSI_TEXTURE_SHADOWCUBE_ARRAY || |
| target == TGSI_TEXTURE_2D_ARRAY_MSAA; |
| } |
| |
| static bool tgsi_is_array_image(unsigned target) |
| { |
| return target == TGSI_TEXTURE_3D || |
| target == TGSI_TEXTURE_CUBE || |
| target == TGSI_TEXTURE_1D_ARRAY || |
| target == TGSI_TEXTURE_2D_ARRAY || |
| target == TGSI_TEXTURE_CUBE_ARRAY || |
| target == TGSI_TEXTURE_2D_ARRAY_MSAA; |
| } |
| |
| /** |
| * Given a 256-bit resource descriptor, force the DCC enable bit to off. |
| * |
| * At least on Tonga, executing image stores on images with DCC enabled and |
| * non-trivial can eventually lead to lockups. This can occur when an |
| * application binds an image as read-only but then uses a shader that writes |
| * to it. The OpenGL spec allows almost arbitrarily bad behavior (including |
| * program termination) in this case, but it doesn't cost much to be a bit |
| * nicer: disabling DCC in the shader still leads to undefined results but |
| * avoids the lockup. |
| */ |
| static LLVMValueRef force_dcc_off(struct si_shader_context *ctx, |
| LLVMValueRef rsrc) |
| { |
| if (ctx->screen->b.chip_class <= CIK) { |
| return rsrc; |
| } else { |
| LLVMBuilderRef builder = ctx->gallivm.builder; |
| LLVMValueRef i32_6 = LLVMConstInt(ctx->i32, 6, 0); |
| LLVMValueRef i32_C = LLVMConstInt(ctx->i32, C_008F28_COMPRESSION_EN, 0); |
| LLVMValueRef tmp; |
| |
| tmp = LLVMBuildExtractElement(builder, rsrc, i32_6, ""); |
| tmp = LLVMBuildAnd(builder, tmp, i32_C, ""); |
| return LLVMBuildInsertElement(builder, rsrc, tmp, i32_6, ""); |
| } |
| } |
| |
| static LLVMTypeRef const_array(LLVMTypeRef elem_type, int num_elements) |
| { |
| return LLVMPointerType(LLVMArrayType(elem_type, num_elements), |
| CONST_ADDR_SPACE); |
| } |
| |
| /** |
| * Load the resource descriptor for \p image. |
| */ |
| static void |
| image_fetch_rsrc( |
| struct lp_build_tgsi_context *bld_base, |
| const struct tgsi_full_src_register *image, |
| bool is_store, unsigned target, |
| LLVMValueRef *rsrc) |
| { |
| struct si_shader_context *ctx = si_shader_context(bld_base); |
| LLVMValueRef rsrc_ptr = LLVMGetParam(ctx->main_fn, |
| SI_PARAM_IMAGES); |
| LLVMValueRef index, tmp; |
| bool dcc_off = target != TGSI_TEXTURE_BUFFER && is_store; |
| |
| assert(image->Register.File == TGSI_FILE_IMAGE); |
| |
| if (!image->Register.Indirect) { |
| const struct tgsi_shader_info *info = bld_base->info; |
| |
| index = LLVMConstInt(ctx->i32, image->Register.Index, 0); |
| |
| if (info->images_writemask & (1 << image->Register.Index) && |
| target != TGSI_TEXTURE_BUFFER) |
| dcc_off = true; |
| } else { |
| /* From the GL_ARB_shader_image_load_store extension spec: |
| * |
| * If a shader performs an image load, store, or atomic |
| * operation using an image variable declared as an array, |
| * and if the index used to select an individual element is |
| * negative or greater than or equal to the size of the |
| * array, the results of the operation are undefined but may |
| * not lead to termination. |
| */ |
| index = get_bounded_indirect_index(ctx, &image->Indirect, |
| image->Register.Index, |
| SI_NUM_IMAGES); |
| } |
| |
| if (target == TGSI_TEXTURE_BUFFER) { |
| LLVMBuilderRef builder = ctx->gallivm.builder; |
| |
| rsrc_ptr = LLVMBuildPointerCast(builder, rsrc_ptr, |
| const_array(ctx->v4i32, 0), ""); |
| index = LLVMBuildMul(builder, index, |
| LLVMConstInt(ctx->i32, 2, 0), ""); |
| index = LLVMBuildAdd(builder, index, |
| LLVMConstInt(ctx->i32, 1, 0), ""); |
| *rsrc = build_indexed_load_const(ctx, rsrc_ptr, index); |
| return; |
| } |
| |
| tmp = build_indexed_load_const(ctx, rsrc_ptr, index); |
| if (dcc_off) |
| tmp = force_dcc_off(ctx, tmp); |
| *rsrc = tmp; |
| } |
| |
| static LLVMValueRef image_fetch_coords( |
| struct lp_build_tgsi_context *bld_base, |
| const struct tgsi_full_instruction *inst, |
| unsigned src) |
| { |
| struct gallivm_state *gallivm = bld_base->base.gallivm; |
| LLVMBuilderRef builder = gallivm->builder; |
| unsigned target = inst->Memory.Texture; |
| unsigned num_coords = tgsi_util_get_texture_coord_dim(target); |
| LLVMValueRef coords[4]; |
| LLVMValueRef tmp; |
| int chan; |
| |
| for (chan = 0; chan < num_coords; ++chan) { |
| tmp = lp_build_emit_fetch(bld_base, inst, src, chan); |
| tmp = LLVMBuildBitCast(builder, tmp, bld_base->uint_bld.elem_type, ""); |
| coords[chan] = tmp; |
| } |
| |
| if (num_coords == 1) |
| return coords[0]; |
| |
| if (num_coords == 3) { |
| /* LLVM has difficulties lowering 3-element vectors. */ |
| coords[3] = bld_base->uint_bld.undef; |
| num_coords = 4; |
| } |
| |
| return lp_build_gather_values(gallivm, coords, num_coords); |
| } |
| |
| /** |
| * Append the extra mode bits that are used by image load and store. |
| */ |
| static void image_append_args( |
| struct si_shader_context *ctx, |
| struct lp_build_emit_data * emit_data, |
| unsigned target, |
| bool atomic, |
| bool force_glc) |
| { |
| const struct tgsi_full_instruction *inst = emit_data->inst; |
| LLVMValueRef i1false = LLVMConstInt(ctx->i1, 0, 0); |
| LLVMValueRef i1true = LLVMConstInt(ctx->i1, 1, 0); |
| LLVMValueRef r128 = i1false; |
| LLVMValueRef da = tgsi_is_array_image(target) ? i1true : i1false; |
| LLVMValueRef glc = |
| force_glc || |
| inst->Memory.Qualifier & (TGSI_MEMORY_COHERENT | TGSI_MEMORY_VOLATILE) ? |
| i1true : i1false; |
| LLVMValueRef slc = i1false; |
| LLVMValueRef lwe = i1false; |
| |
| if (atomic || (HAVE_LLVM <= 0x0309)) { |
| emit_data->args[emit_data->arg_count++] = r128; |
| emit_data->args[emit_data->arg_count++] = da; |
| if (!atomic) { |
| emit_data->args[emit_data->arg_count++] = glc; |
| } |
| emit_data->args[emit_data->arg_count++] = slc; |
| return; |
| } |
| |
| /* HAVE_LLVM >= 0x0400 */ |
| emit_data->args[emit_data->arg_count++] = glc; |
| emit_data->args[emit_data->arg_count++] = slc; |
| emit_data->args[emit_data->arg_count++] = lwe; |
| emit_data->args[emit_data->arg_count++] = da; |
| } |
| |
| /** |
| * Append the resource and indexing arguments for buffer intrinsics. |
| * |
| * \param rsrc the v4i32 buffer resource |
| * \param index index into the buffer (stride-based) |
| * \param offset byte offset into the buffer |
| */ |
| static void buffer_append_args( |
| struct si_shader_context *ctx, |
| struct lp_build_emit_data *emit_data, |
| LLVMValueRef rsrc, |
| LLVMValueRef index, |
| LLVMValueRef offset, |
| bool atomic, |
| bool force_glc) |
| { |
| const struct tgsi_full_instruction *inst = emit_data->inst; |
| LLVMValueRef i1false = LLVMConstInt(ctx->i1, 0, 0); |
| LLVMValueRef i1true = LLVMConstInt(ctx->i1, 1, 0); |
| |
| emit_data->args[emit_data->arg_count++] = rsrc; |
| emit_data->args[emit_data->arg_count++] = index; /* vindex */ |
| emit_data->args[emit_data->arg_count++] = offset; /* voffset */ |
| if (!atomic) { |
| emit_data->args[emit_data->arg_count++] = |
| force_glc || |
| inst->Memory.Qualifier & (TGSI_MEMORY_COHERENT | TGSI_MEMORY_VOLATILE) ? |
| i1true : i1false; /* glc */ |
| } |
| emit_data->args[emit_data->arg_count++] = i1false; /* slc */ |
| } |
| |
| static void load_fetch_args( |
| struct lp_build_tgsi_context * bld_base, |
| struct lp_build_emit_data * emit_data) |
| { |
| struct si_shader_context *ctx = si_shader_context(bld_base); |
| struct gallivm_state *gallivm = bld_base->base.gallivm; |
| const struct tgsi_full_instruction * inst = emit_data->inst; |
| unsigned target = inst->Memory.Texture; |
| LLVMValueRef rsrc; |
| |
| emit_data->dst_type = LLVMVectorType(bld_base->base.elem_type, 4); |
| |
| if (inst->Src[0].Register.File == TGSI_FILE_BUFFER) { |
| LLVMBuilderRef builder = gallivm->builder; |
| LLVMValueRef offset; |
| LLVMValueRef tmp; |
| |
| rsrc = shader_buffer_fetch_rsrc(ctx, &inst->Src[0]); |
| |
| tmp = lp_build_emit_fetch(bld_base, inst, 1, 0); |
| offset = LLVMBuildBitCast(builder, tmp, bld_base->uint_bld.elem_type, ""); |
| |
| buffer_append_args(ctx, emit_data, rsrc, bld_base->uint_bld.zero, |
| offset, false, false); |
| } else if (inst->Src[0].Register.File == TGSI_FILE_IMAGE) { |
| LLVMValueRef coords; |
| |
| image_fetch_rsrc(bld_base, &inst->Src[0], false, target, &rsrc); |
| coords = image_fetch_coords(bld_base, inst, 1); |
| |
| if (target == TGSI_TEXTURE_BUFFER) { |
| buffer_append_args(ctx, emit_data, rsrc, coords, |
| bld_base->uint_bld.zero, false, false); |
| } else { |
| emit_data->args[0] = coords; |
| emit_data->args[1] = rsrc; |
| emit_data->args[2] = lp_build_const_int32(gallivm, 15); /* dmask */ |
| emit_data->arg_count = 3; |
| |
| image_append_args(ctx, emit_data, target, false, false); |
| } |
| } |
| } |
| |
| static void load_emit_buffer(struct si_shader_context *ctx, |
| struct lp_build_emit_data *emit_data) |
| { |
| const struct tgsi_full_instruction *inst = emit_data->inst; |
| struct gallivm_state *gallivm = &ctx->gallivm; |
| LLVMBuilderRef builder = gallivm->builder; |
| uint writemask = inst->Dst[0].Register.WriteMask; |
| uint count = util_last_bit(writemask); |
| const char *intrinsic_name; |
| LLVMTypeRef dst_type; |
| |
| switch (count) { |
| case 1: |
| intrinsic_name = "llvm.amdgcn.buffer.load.f32"; |
| dst_type = ctx->f32; |
| break; |
| case 2: |
| intrinsic_name = "llvm.amdgcn.buffer.load.v2f32"; |
| dst_type = LLVMVectorType(ctx->f32, 2); |
| break; |
| default: // 3 & 4 |
| intrinsic_name = "llvm.amdgcn.buffer.load.v4f32"; |
| dst_type = ctx->v4f32; |
| count = 4; |
| } |
| |
| emit_data->output[emit_data->chan] = lp_build_intrinsic( |
| builder, intrinsic_name, dst_type, |
| emit_data->args, emit_data->arg_count, |
| LP_FUNC_ATTR_READONLY); |
| } |
| |
| static LLVMValueRef get_memory_ptr(struct si_shader_context *ctx, |
| const struct tgsi_full_instruction *inst, |
| LLVMTypeRef type, int arg) |
| { |
| struct gallivm_state *gallivm = &ctx->gallivm; |
| LLVMBuilderRef builder = gallivm->builder; |
| LLVMValueRef offset, ptr; |
| int addr_space; |
| |
| offset = lp_build_emit_fetch(&ctx->bld_base, inst, arg, 0); |
| offset = LLVMBuildBitCast(builder, offset, ctx->i32, ""); |
| |
| ptr = ctx->shared_memory; |
| ptr = LLVMBuildGEP(builder, ptr, &offset, 1, ""); |
| addr_space = LLVMGetPointerAddressSpace(LLVMTypeOf(ptr)); |
| ptr = LLVMBuildBitCast(builder, ptr, LLVMPointerType(type, addr_space), ""); |
| |
| return ptr; |
| } |
| |
| static void load_emit_memory( |
| struct si_shader_context *ctx, |
| struct lp_build_emit_data *emit_data) |
| { |
| const struct tgsi_full_instruction *inst = emit_data->inst; |
| struct lp_build_context *base = &ctx->bld_base.base; |
| struct gallivm_state *gallivm = &ctx->gallivm; |
| LLVMBuilderRef builder = gallivm->builder; |
| unsigned writemask = inst->Dst[0].Register.WriteMask; |
| LLVMValueRef channels[4], ptr, derived_ptr, index; |
| int chan; |
| |
| ptr = get_memory_ptr(ctx, inst, base->elem_type, 1); |
| |
| for (chan = 0; chan < 4; ++chan) { |
| if (!(writemask & (1 << chan))) { |
| channels[chan] = LLVMGetUndef(base->elem_type); |
| continue; |
| } |
| |
| index = lp_build_const_int32(gallivm, chan); |
| derived_ptr = LLVMBuildGEP(builder, ptr, &index, 1, ""); |
| channels[chan] = LLVMBuildLoad(builder, derived_ptr, ""); |
| } |
| emit_data->output[emit_data->chan] = lp_build_gather_values(gallivm, channels, 4); |
| } |
| |
| static void get_image_intr_name(const char *base_name, |
| LLVMTypeRef data_type, |
| LLVMTypeRef coords_type, |
| LLVMTypeRef rsrc_type, |
| char *out_name, unsigned out_len) |
| { |
| char coords_type_name[8]; |
| |
| build_type_name_for_intr(coords_type, coords_type_name, |
| sizeof(coords_type_name)); |
| |
| if (HAVE_LLVM <= 0x0309) { |
| snprintf(out_name, out_len, "%s.%s", base_name, coords_type_name); |
| } else { |
| char data_type_name[8]; |
| char rsrc_type_name[8]; |
| |
| build_type_name_for_intr(data_type, data_type_name, |
| sizeof(data_type_name)); |
| build_type_name_for_intr(rsrc_type, rsrc_type_name, |
| sizeof(rsrc_type_name)); |
| snprintf(out_name, out_len, "%s.%s.%s.%s", base_name, |
| data_type_name, coords_type_name, rsrc_type_name); |
| } |
| } |
| |
| static void load_emit( |
| const struct lp_build_tgsi_action *action, |
| struct lp_build_tgsi_context *bld_base, |
| struct lp_build_emit_data *emit_data) |
| { |
| struct si_shader_context *ctx = si_shader_context(bld_base); |
| struct gallivm_state *gallivm = bld_base->base.gallivm; |
| LLVMBuilderRef builder = gallivm->builder; |
| const struct tgsi_full_instruction * inst = emit_data->inst; |
| char intrinsic_name[64]; |
| |
| if (inst->Src[0].Register.File == TGSI_FILE_MEMORY) { |
| load_emit_memory(ctx, emit_data); |
| return; |
| } |
| |
| if (inst->Memory.Qualifier & TGSI_MEMORY_VOLATILE) |
| emit_waitcnt(ctx, VM_CNT); |
| |
| if (inst->Src[0].Register.File == TGSI_FILE_BUFFER) { |
| load_emit_buffer(ctx, emit_data); |
| return; |
| } |
| |
| if (inst->Memory.Texture == TGSI_TEXTURE_BUFFER) { |
| emit_data->output[emit_data->chan] = |
| lp_build_intrinsic( |
| builder, "llvm.amdgcn.buffer.load.format.v4f32", emit_data->dst_type, |
| emit_data->args, emit_data->arg_count, |
| LP_FUNC_ATTR_READONLY); |
| } else { |
| get_image_intr_name("llvm.amdgcn.image.load", |
| emit_data->dst_type, /* vdata */ |
| LLVMTypeOf(emit_data->args[0]), /* coords */ |
| LLVMTypeOf(emit_data->args[1]), /* rsrc */ |
| intrinsic_name, sizeof(intrinsic_name)); |
| |
| emit_data->output[emit_data->chan] = |
| lp_build_intrinsic( |
| builder, intrinsic_name, emit_data->dst_type, |
| emit_data->args, emit_data->arg_count, |
| LP_FUNC_ATTR_READONLY); |
| } |
| } |
| |
| static void store_fetch_args( |
| struct lp_build_tgsi_context * bld_base, |
| struct lp_build_emit_data * emit_data) |
| { |
| struct si_shader_context *ctx = si_shader_context(bld_base); |
| struct gallivm_state *gallivm = bld_base->base.gallivm; |
| LLVMBuilderRef builder = gallivm->builder; |
| const struct tgsi_full_instruction * inst = emit_data->inst; |
| struct tgsi_full_src_register memory; |
| LLVMValueRef chans[4]; |
| LLVMValueRef data; |
| LLVMValueRef rsrc; |
| unsigned chan; |
| |
| emit_data->dst_type = LLVMVoidTypeInContext(gallivm->context); |
| |
| for (chan = 0; chan < 4; ++chan) { |
| chans[chan] = lp_build_emit_fetch(bld_base, inst, 1, chan); |
| } |
| data = lp_build_gather_values(gallivm, chans, 4); |
| |
| emit_data->args[emit_data->arg_count++] = data; |
| |
| memory = tgsi_full_src_register_from_dst(&inst->Dst[0]); |
| |
| if (inst->Dst[0].Register.File == TGSI_FILE_BUFFER) { |
| LLVMValueRef offset; |
| LLVMValueRef tmp; |
| |
| rsrc = shader_buffer_fetch_rsrc(ctx, &memory); |
| |
| tmp = lp_build_emit_fetch(bld_base, inst, 0, 0); |
| offset = LLVMBuildBitCast(builder, tmp, bld_base->uint_bld.elem_type, ""); |
| |
| buffer_append_args(ctx, emit_data, rsrc, bld_base->uint_bld.zero, |
| offset, false, false); |
| } else if (inst->Dst[0].Register.File == TGSI_FILE_IMAGE) { |
| unsigned target = inst->Memory.Texture; |
| LLVMValueRef coords; |
| |
| /* 8bit/16bit TC L1 write corruption bug on SI. |
| * All store opcodes not aligned to a dword are affected. |
| * |
| * The only way to get unaligned stores in radeonsi is through |
| * shader images. |
| */ |
| bool force_glc = ctx->screen->b.chip_class == SI; |
| |
| coords = image_fetch_coords(bld_base, inst, 0); |
| |
| if (target == TGSI_TEXTURE_BUFFER) { |
| image_fetch_rsrc(bld_base, &memory, true, target, &rsrc); |
| buffer_append_args(ctx, emit_data, rsrc, coords, |
| bld_base->uint_bld.zero, false, force_glc); |
| } else { |
| emit_data->args[1] = coords; |
| image_fetch_rsrc(bld_base, &memory, true, target, |
| &emit_data->args[2]); |
| emit_data->args[3] = lp_build_const_int32(gallivm, 15); /* dmask */ |
| emit_data->arg_count = 4; |
| |
| image_append_args(ctx, emit_data, target, false, force_glc); |
| } |
| } |
| } |
| |
| static void store_emit_buffer( |
| struct si_shader_context *ctx, |
| struct lp_build_emit_data *emit_data) |
| { |
| const struct tgsi_full_instruction *inst = emit_data->inst; |
| struct gallivm_state *gallivm = &ctx->gallivm; |
| LLVMBuilderRef builder = gallivm->builder; |
| struct lp_build_context *uint_bld = &ctx->bld_base.uint_bld; |
| LLVMValueRef base_data = emit_data->args[0]; |
| LLVMValueRef base_offset = emit_data->args[3]; |
| unsigned writemask = inst->Dst[0].Register.WriteMask; |
| |
| while (writemask) { |
| int start, count; |
| const char *intrinsic_name; |
| LLVMValueRef data; |
| LLVMValueRef offset; |
| LLVMValueRef tmp; |
| |
| u_bit_scan_consecutive_range(&writemask, &start, &count); |
| |
| /* Due to an LLVM limitation, split 3-element writes |
| * into a 2-element and a 1-element write. */ |
| if (count == 3) { |
| writemask |= 1 << (start + 2); |
| count = 2; |
| } |
| |
| if (count == 4) { |
| data = base_data; |
| intrinsic_name = "llvm.amdgcn.buffer.store.v4f32"; |
| } else if (count == 2) { |
| LLVMTypeRef v2f32 = LLVMVectorType(ctx->f32, 2); |
| |
| tmp = LLVMBuildExtractElement( |
| builder, base_data, |
| lp_build_const_int32(gallivm, start), ""); |
| data = LLVMBuildInsertElement( |
| builder, LLVMGetUndef(v2f32), tmp, |
| uint_bld->zero, ""); |
| |
| tmp = LLVMBuildExtractElement( |
| builder, base_data, |
| lp_build_const_int32(gallivm, start + 1), ""); |
| data = LLVMBuildInsertElement( |
| builder, data, tmp, uint_bld->one, ""); |
| |
| intrinsic_name = "llvm.amdgcn.buffer.store.v2f32"; |
| } else { |
| assert(count == 1); |
| data = LLVMBuildExtractElement( |
| builder, base_data, |
| lp_build_const_int32(gallivm, start), ""); |
| intrinsic_name = "llvm.amdgcn.buffer.store.f32"; |
| } |
| |
| offset = base_offset; |
| if (start != 0) { |
| offset = LLVMBuildAdd( |
| builder, offset, |
| lp_build_const_int32(gallivm, start * 4), ""); |
| } |
| |
| emit_data->args[0] = data; |
| emit_data->args[3] = offset; |
| |
| lp_build_intrinsic( |
| builder, intrinsic_name, emit_data->dst_type, |
| emit_data->args, emit_data->arg_count, 0); |
| } |
| } |
| |
| static void store_emit_memory( |
| struct si_shader_context *ctx, |
| struct lp_build_emit_data *emit_data) |
| { |
| const struct tgsi_full_instruction *inst = emit_data->inst; |
| struct gallivm_state *gallivm = &ctx->gallivm; |
| struct lp_build_context *base = &ctx->bld_base.base; |
| LLVMBuilderRef builder = gallivm->builder; |
| unsigned writemask = inst->Dst[0].Register.WriteMask; |
| LLVMValueRef ptr, derived_ptr, data, index; |
| int chan; |
| |
| ptr = get_memory_ptr(ctx, inst, base->elem_type, 0); |
| |
| for (chan = 0; chan < 4; ++chan) { |
| if (!(writemask & (1 << chan))) { |
| continue; |
| } |
| data = lp_build_emit_fetch(&ctx->bld_base, inst, 1, chan); |
| index = lp_build_const_int32(gallivm, chan); |
| derived_ptr = LLVMBuildGEP(builder, ptr, &index, 1, ""); |
| LLVMBuildStore(builder, data, derived_ptr); |
| } |
| } |
| |
| static void store_emit( |
| const struct lp_build_tgsi_action *action, |
| struct lp_build_tgsi_context *bld_base, |
| struct lp_build_emit_data *emit_data) |
| { |
| struct si_shader_context *ctx = si_shader_context(bld_base); |
| struct gallivm_state *gallivm = bld_base->base.gallivm; |
| LLVMBuilderRef builder = gallivm->builder; |
| const struct tgsi_full_instruction * inst = emit_data->inst; |
| unsigned target = inst->Memory.Texture; |
| char intrinsic_name[64]; |
| |
| if (inst->Dst[0].Register.File == TGSI_FILE_MEMORY) { |
| store_emit_memory(ctx, emit_data); |
| return; |
| } |
| |
| if (inst->Memory.Qualifier & TGSI_MEMORY_VOLATILE) |
| emit_waitcnt(ctx, VM_CNT); |
| |
| if (inst->Dst[0].Register.File == TGSI_FILE_BUFFER) { |
| store_emit_buffer(ctx, emit_data); |
| return; |
| } |
| |
| if (target == TGSI_TEXTURE_BUFFER) { |
| emit_data->output[emit_data->chan] = lp_build_intrinsic( |
| builder, "llvm.amdgcn.buffer.store.format.v4f32", |
| emit_data->dst_type, emit_data->args, |
| emit_data->arg_count, 0); |
| } else { |
| get_image_intr_name("llvm.amdgcn.image.store", |
| LLVMTypeOf(emit_data->args[0]), /* vdata */ |
| LLVMTypeOf(emit_data->args[1]), /* coords */ |
| LLVMTypeOf(emit_data->args[2]), /* rsrc */ |
| intrinsic_name, sizeof(intrinsic_name)); |
| |
| emit_data->output[emit_data->chan] = |
| lp_build_intrinsic( |
| builder, intrinsic_name, emit_data->dst_type, |
| emit_data->args, emit_data->arg_count, 0); |
| } |
| } |
| |
| static void atomic_fetch_args( |
| struct lp_build_tgsi_context * bld_base, |
| struct lp_build_emit_data * emit_data) |
| { |
| struct si_shader_context *ctx = si_shader_context(bld_base); |
| struct gallivm_state *gallivm = bld_base->base.gallivm; |
| LLVMBuilderRef builder = gallivm->builder; |
| const struct tgsi_full_instruction * inst = emit_data->inst; |
| LLVMValueRef data1, data2; |
| LLVMValueRef rsrc; |
| LLVMValueRef tmp; |
| |
| emit_data->dst_type = bld_base->base.elem_type; |
| |
| tmp = lp_build_emit_fetch(bld_base, inst, 2, 0); |
| data1 = LLVMBuildBitCast(builder, tmp, bld_base->uint_bld.elem_type, ""); |
| |
| if (inst->Instruction.Opcode == TGSI_OPCODE_ATOMCAS) { |
| tmp = lp_build_emit_fetch(bld_base, inst, 3, 0); |
| data2 = LLVMBuildBitCast(builder, tmp, bld_base->uint_bld.elem_type, ""); |
| } |
| |
| /* llvm.amdgcn.image/buffer.atomic.cmpswap reflect the hardware order |
| * of arguments, which is reversed relative to TGSI (and GLSL) |
| */ |
| if (inst->Instruction.Opcode == TGSI_OPCODE_ATOMCAS) |
| emit_data->args[emit_data->arg_count++] = data2; |
| emit_data->args[emit_data->arg_count++] = data1; |
| |
| if (inst->Src[0].Register.File == TGSI_FILE_BUFFER) { |
| LLVMValueRef offset; |
| |
| rsrc = shader_buffer_fetch_rsrc(ctx, &inst->Src[0]); |
| |
| tmp = lp_build_emit_fetch(bld_base, inst, 1, 0); |
| offset = LLVMBuildBitCast(builder, tmp, bld_base->uint_bld.elem_type, ""); |
| |
| buffer_append_args(ctx, emit_data, rsrc, bld_base->uint_bld.zero, |
| offset, true, false); |
| } else if (inst->Src[0].Register.File == TGSI_FILE_IMAGE) { |
| unsigned target = inst->Memory.Texture; |
| LLVMValueRef coords; |
| |
| image_fetch_rsrc(bld_base, &inst->Src[0], true, target, &rsrc); |
| coords = image_fetch_coords(bld_base, inst, 1); |
| |
| if (target == TGSI_TEXTURE_BUFFER) { |
| buffer_append_args(ctx, emit_data, rsrc, coords, |
| bld_base->uint_bld.zero, true, false); |
| } else { |
| emit_data->args[emit_data->arg_count++] = coords; |
| emit_data->args[emit_data->arg_count++] = rsrc; |
| |
| image_append_args(ctx, emit_data, target, true, false); |
| } |
| } |
| } |
| |
| static void atomic_emit_memory(struct si_shader_context *ctx, |
| struct lp_build_emit_data *emit_data) { |
| struct gallivm_state *gallivm = &ctx->gallivm; |
| LLVMBuilderRef builder = gallivm->builder; |
| const struct tgsi_full_instruction * inst = emit_data->inst; |
| LLVMValueRef ptr, result, arg; |
| |
| ptr = get_memory_ptr(ctx, inst, ctx->i32, 1); |
| |
| arg = lp_build_emit_fetch(&ctx->bld_base, inst, 2, 0); |
| arg = LLVMBuildBitCast(builder, arg, ctx->i32, ""); |
| |
| if (inst->Instruction.Opcode == TGSI_OPCODE_ATOMCAS) { |
| LLVMValueRef new_data; |
| new_data = lp_build_emit_fetch(&ctx->bld_base, |
| inst, 3, 0); |
| |
| new_data = LLVMBuildBitCast(builder, new_data, ctx->i32, ""); |
| |
| #if HAVE_LLVM >= 0x309 |
| result = LLVMBuildAtomicCmpXchg(builder, ptr, arg, new_data, |
| LLVMAtomicOrderingSequentiallyConsistent, |
| LLVMAtomicOrderingSequentiallyConsistent, |
| false); |
| #endif |
| |
| result = LLVMBuildExtractValue(builder, result, 0, ""); |
| } else { |
| LLVMAtomicRMWBinOp op; |
| |
| switch(inst->Instruction.Opcode) { |
| case TGSI_OPCODE_ATOMUADD: |
| op = LLVMAtomicRMWBinOpAdd; |
| break; |
| case TGSI_OPCODE_ATOMXCHG: |
| op = LLVMAtomicRMWBinOpXchg; |
| break; |
| case TGSI_OPCODE_ATOMAND: |
| op = LLVMAtomicRMWBinOpAnd; |
| break; |
| case TGSI_OPCODE_ATOMOR: |
| op = LLVMAtomicRMWBinOpOr; |
| break; |
| case TGSI_OPCODE_ATOMXOR: |
| op = LLVMAtomicRMWBinOpXor; |
| break; |
| case TGSI_OPCODE_ATOMUMIN: |
| op = LLVMAtomicRMWBinOpUMin; |
| break; |
| case TGSI_OPCODE_ATOMUMAX: |
| op = LLVMAtomicRMWBinOpUMax; |
| break; |
| case TGSI_OPCODE_ATOMIMIN: |
| op = LLVMAtomicRMWBinOpMin; |
| break; |
| case TGSI_OPCODE_ATOMIMAX: |
| op = LLVMAtomicRMWBinOpMax; |
| break; |
| default: |
| unreachable("unknown atomic opcode"); |
| } |
| |
| result = LLVMBuildAtomicRMW(builder, op, ptr, arg, |
| LLVMAtomicOrderingSequentiallyConsistent, |
| false); |
| } |
| emit_data->output[emit_data->chan] = LLVMBuildBitCast(builder, result, emit_data->dst_type, ""); |
| } |
| |
| static void atomic_emit( |
| const struct lp_build_tgsi_action *action, |
| struct lp_build_tgsi_context *bld_base, |
| struct lp_build_emit_data *emit_data) |
| { |
| struct si_shader_context *ctx = si_shader_context(bld_base); |
| struct gallivm_state *gallivm = bld_base->base.gallivm; |
| LLVMBuilderRef builder = gallivm->builder; |
| const struct tgsi_full_instruction * inst = emit_data->inst; |
| char intrinsic_name[40]; |
| LLVMValueRef tmp; |
| |
| if (inst->Src[0].Register.File == TGSI_FILE_MEMORY) { |
| atomic_emit_memory(ctx, emit_data); |
| return; |
| } |
| |
| if (inst->Src[0].Register.File == TGSI_FILE_BUFFER || |
| inst->Memory.Texture == TGSI_TEXTURE_BUFFER) { |
| snprintf(intrinsic_name, sizeof(intrinsic_name), |
| "llvm.amdgcn.buffer.atomic.%s", action->intr_name); |
| } else { |
| LLVMValueRef coords; |
| char coords_type[8]; |
| |
| if (inst->Instruction.Opcode == TGSI_OPCODE_ATOMCAS) |
| coords = emit_data->args[2]; |
| else |
| coords = emit_data->args[1]; |
| |
| build_type_name_for_intr(LLVMTypeOf(coords), coords_type, sizeof(coords_type)); |
| snprintf(intrinsic_name, sizeof(intrinsic_name), |
| "llvm.amdgcn.image.atomic.%s.%s", |
| action->intr_name, coords_type); |
| } |
| |
| tmp = lp_build_intrinsic( |
| builder, intrinsic_name, bld_base->uint_bld.elem_type, |
| emit_data->args, emit_data->arg_count, 0); |
| emit_data->output[emit_data->chan] = |
| LLVMBuildBitCast(builder, tmp, bld_base->base.elem_type, ""); |
| } |
| |
| static void resq_fetch_args( |
| struct lp_build_tgsi_context * bld_base, |
| struct lp_build_emit_data * emit_data) |
| { |
| struct si_shader_context *ctx = si_shader_context(bld_base); |
| struct gallivm_state *gallivm = bld_base->base.gallivm; |
| const struct tgsi_full_instruction *inst = emit_data->inst; |
| const struct tgsi_full_src_register *reg = &inst->Src[0]; |
| |
| emit_data->dst_type = ctx->v4i32; |
| |
| if (reg->Register.File == TGSI_FILE_BUFFER) { |
| emit_data->args[0] = shader_buffer_fetch_rsrc(ctx, reg); |
| emit_data->arg_count = 1; |
| } else if (inst->Memory.Texture == TGSI_TEXTURE_BUFFER) { |
| image_fetch_rsrc(bld_base, reg, false, inst->Memory.Texture, |
| &emit_data->args[0]); |
| emit_data->arg_count = 1; |
| } else { |
| emit_data->args[0] = bld_base->uint_bld.zero; /* mip level */ |
| image_fetch_rsrc(bld_base, reg, false, inst->Memory.Texture, |
| &emit_data->args[1]); |
| emit_data->args[2] = lp_build_const_int32(gallivm, 15); /* dmask */ |
| emit_data->args[3] = bld_base->uint_bld.zero; /* unorm */ |
| emit_data->args[4] = bld_base->uint_bld.zero; /* r128 */ |
| emit_data->args[5] = tgsi_is_array_image(inst->Memory.Texture) ? |
| bld_base->uint_bld.one : bld_base->uint_bld.zero; /* da */ |
| emit_data->args[6] = bld_base->uint_bld.zero; /* glc */ |
| emit_data->args[7] = bld_base->uint_bld.zero; /* slc */ |
| emit_data->args[8] = bld_base->uint_bld.zero; /* tfe */ |
| emit_data->args[9] = bld_base->uint_bld.zero; /* lwe */ |
| emit_data->arg_count = 10; |
| } |
| } |
| |
| static void resq_emit( |
| const struct lp_build_tgsi_action *action, |
| struct lp_build_tgsi_context *bld_base, |
| struct lp_build_emit_data *emit_data) |
| { |
| struct gallivm_state *gallivm = bld_base->base.gallivm; |
| LLVMBuilderRef builder = gallivm->builder; |
| const struct tgsi_full_instruction *inst = emit_data->inst; |
| LLVMValueRef out; |
| |
| if (inst->Src[0].Register.File == TGSI_FILE_BUFFER) { |
| out = LLVMBuildExtractElement(builder, emit_data->args[0], |
| lp_build_const_int32(gallivm, 2), ""); |
| } else if (inst->Memory.Texture == TGSI_TEXTURE_BUFFER) { |
| out = get_buffer_size(bld_base, emit_data->args[0]); |
| } else { |
| out = lp_build_intrinsic( |
| builder, "llvm.SI.getresinfo.i32", emit_data->dst_type, |
| emit_data->args, emit_data->arg_count, |
| LP_FUNC_ATTR_READNONE); |
| |
| /* Divide the number of layers by 6 to get the number of cubes. */ |
| if (inst->Memory.Texture == TGSI_TEXTURE_CUBE_ARRAY) { |
| LLVMValueRef imm2 = lp_build_const_int32(gallivm, 2); |
| LLVMValueRef imm6 = lp_build_const_int32(gallivm, 6); |
| |
| LLVMValueRef z = LLVMBuildExtractElement(builder, out, imm2, ""); |
| z = LLVMBuildSDiv(builder, z, imm6, ""); |
| out = LLVMBuildInsertElement(builder, out, z, imm2, ""); |
| } |
| } |
| |
| emit_data->output[emit_data->chan] = out; |
| } |
| |
| static void set_tex_fetch_args(struct si_shader_context *ctx, |
| struct lp_build_emit_data *emit_data, |
| unsigned opcode, unsigned target, |
| LLVMValueRef res_ptr, LLVMValueRef samp_ptr, |
| LLVMValueRef *param, unsigned count, |
| unsigned dmask) |
| { |
| struct gallivm_state *gallivm = &ctx->gallivm; |
| unsigned num_args; |
| unsigned is_rect = target == TGSI_TEXTURE_RECT; |
| |
| /* Pad to power of two vector */ |
| while (count < util_next_power_of_two(count)) |
| param[count++] = LLVMGetUndef(ctx->i32); |
| |
| /* Texture coordinates. */ |
| if (count > 1) |
| emit_data->args[0] = lp_build_gather_values(gallivm, param, count); |
| else |
| emit_data->args[0] = param[0]; |
| |
| /* Resource. */ |
| emit_data->args[1] = res_ptr; |
| num_args = 2; |
| |
| if (opcode == TGSI_OPCODE_TXF || opcode == TGSI_OPCODE_TXQ) |
| emit_data->dst_type = ctx->v4i32; |
| else { |
| emit_data->dst_type = ctx->v4f32; |
| |
| emit_data->args[num_args++] = samp_ptr; |
| } |
| |
| emit_data->args[num_args++] = lp_build_const_int32(gallivm, dmask); |
| emit_data->args[num_args++] = lp_build_const_int32(gallivm, is_rect); /* unorm */ |
| emit_data->args[num_args++] = lp_build_const_int32(gallivm, 0); /* r128 */ |
| emit_data->args[num_args++] = lp_build_const_int32(gallivm, |
| tgsi_is_array_sampler(target)); /* da */ |
| emit_data->args[num_args++] = lp_build_const_int32(gallivm, 0); /* glc */ |
| emit_data->args[num_args++] = lp_build_const_int32(gallivm, 0); /* slc */ |
| emit_data->args[num_args++] = lp_build_const_int32(gallivm, 0); /* tfe */ |
| emit_data->args[num_args++] = lp_build_const_int32(gallivm, 0); /* lwe */ |
| |
| emit_data->arg_count = num_args; |
| } |
| |
| static const struct lp_build_tgsi_action tex_action; |
| |
| enum desc_type { |
| DESC_IMAGE, |
| DESC_BUFFER, |
| DESC_FMASK, |
| DESC_SAMPLER, |
| }; |
| |
| /** |
| * Load an image view, fmask view. or sampler state descriptor. |
| */ |
| static LLVMValueRef load_sampler_desc_custom(struct si_shader_context *ctx, |
| LLVMValueRef list, LLVMValueRef index, |
| enum desc_type type) |
| { |
| struct gallivm_state *gallivm = &ctx->gallivm; |
| LLVMBuilderRef builder = gallivm->builder; |
| |
| switch (type) { |
| case DESC_IMAGE: |
| /* The image is at [0:7]. */ |
| index = LLVMBuildMul(builder, index, LLVMConstInt(ctx->i32, 2, 0), ""); |
| break; |
| case DESC_BUFFER: |
| /* The buffer is in [4:7]. */ |
| index = LLVMBuildMul(builder, index, LLVMConstInt(ctx->i32, 4, 0), ""); |
| index = LLVMBuildAdd(builder, index, LLVMConstInt(ctx->i32, 1, 0), ""); |
| list = LLVMBuildPointerCast(builder, list, |
| const_array(ctx->v4i32, 0), ""); |
| break; |
| case DESC_FMASK: |
| /* The FMASK is at [8:15]. */ |
| index = LLVMBuildMul(builder, index, LLVMConstInt(ctx->i32, 2, 0), ""); |
| index = LLVMBuildAdd(builder, index, LLVMConstInt(ctx->i32, 1, 0), ""); |
| break; |
| case DESC_SAMPLER: |
| /* The sampler state is at [12:15]. */ |
| index = LLVMBuildMul(builder, index, LLVMConstInt(ctx->i32, 4, 0), ""); |
| index = LLVMBuildAdd(builder, index, LLVMConstInt(ctx->i32, 3, 0), ""); |
| list = LLVMBuildPointerCast(builder, list, |
| const_array(ctx->v4i32, 0), ""); |
| break; |
| } |
| |
| return build_indexed_load_const(ctx, list, index); |
| } |
| |
| static LLVMValueRef load_sampler_desc(struct si_shader_context *ctx, |
| LLVMValueRef index, enum desc_type type) |
| { |
| LLVMValueRef list = LLVMGetParam(ctx->main_fn, |
| SI_PARAM_SAMPLERS); |
| |
| return load_sampler_desc_custom(ctx, list, index, type); |
| } |
| |
| /* Disable anisotropic filtering if BASE_LEVEL == LAST_LEVEL. |
| * |
| * SI-CI: |
| * If BASE_LEVEL == LAST_LEVEL, the shader must disable anisotropic |
| * filtering manually. The driver sets img7 to a mask clearing |
| * MAX_ANISO_RATIO if BASE_LEVEL == LAST_LEVEL. The shader must do: |
| * s_and_b32 samp0, samp0, img7 |
| * |
| * VI: |
| * The ANISO_OVERRIDE sampler field enables this fix in TA. |
| */ |
| static LLVMValueRef sici_fix_sampler_aniso(struct si_shader_context *ctx, |
| LLVMValueRef res, LLVMValueRef samp) |
| { |
| LLVMBuilderRef builder = ctx->gallivm.builder; |
| LLVMValueRef img7, samp0; |
| |
| if (ctx->screen->b.chip_class >= VI) |
| return samp; |
| |
| img7 = LLVMBuildExtractElement(builder, res, |
| LLVMConstInt(ctx->i32, 7, 0), ""); |
| samp0 = LLVMBuildExtractElement(builder, samp, |
| LLVMConstInt(ctx->i32, 0, 0), ""); |
| samp0 = LLVMBuildAnd(builder, samp0, img7, ""); |
| return LLVMBuildInsertElement(builder, samp, samp0, |
| LLVMConstInt(ctx->i32, 0, 0), ""); |
| } |
| |
| static void tex_fetch_ptrs( |
| struct lp_build_tgsi_context *bld_base, |
| struct lp_build_emit_data *emit_data, |
| LLVMValueRef *res_ptr, LLVMValueRef *samp_ptr, LLVMValueRef *fmask_ptr) |
| { |
| struct si_shader_context *ctx = si_shader_context(bld_base); |
| const struct tgsi_full_instruction *inst = emit_data->inst; |
| unsigned target = inst->Texture.Texture; |
| unsigned sampler_src; |
| unsigned sampler_index; |
| LLVMValueRef index; |
| |
| sampler_src = emit_data->inst->Instruction.NumSrcRegs - 1; |
| sampler_index = emit_data->inst->Src[sampler_src].Register.Index; |
| |
| if (emit_data->inst->Src[sampler_src].Register.Indirect) { |
| const struct tgsi_full_src_register *reg = &emit_data->inst->Src[sampler_src]; |
| |
| index = get_bounded_indirect_index(ctx, |
| ®->Indirect, |
| reg->Register.Index, |
| SI_NUM_SAMPLERS); |
| } else { |
| index = LLVMConstInt(ctx->i32, sampler_index, 0); |
| } |
| |
| if (target == TGSI_TEXTURE_BUFFER) |
| *res_ptr = load_sampler_desc(ctx, index, DESC_BUFFER); |
| else |
| *res_ptr = load_sampler_desc(ctx, index, DESC_IMAGE); |
| |
| if (samp_ptr) |
| *samp_ptr = NULL; |
| if (fmask_ptr) |
| *fmask_ptr = NULL; |
| |
| if (target == TGSI_TEXTURE_2D_MSAA || |
| target == TGSI_TEXTURE_2D_ARRAY_MSAA) { |
| if (fmask_ptr) |
| *fmask_ptr = load_sampler_desc(ctx, index, DESC_FMASK); |
| } else if (target != TGSI_TEXTURE_BUFFER) { |
| if (samp_ptr) { |
| *samp_ptr = load_sampler_desc(ctx, index, DESC_SAMPLER); |
| *samp_ptr = sici_fix_sampler_aniso(ctx, *res_ptr, *samp_ptr); |
| } |
| } |
| } |
| |
| static void txq_fetch_args( |
| struct lp_build_tgsi_context *bld_base, |
| struct lp_build_emit_data *emit_data) |
| { |
| struct si_shader_context *ctx = si_shader_context(bld_base); |
| const struct tgsi_full_instruction *inst = emit_data->inst; |
| unsigned target = inst->Texture.Texture; |
| LLVMValueRef res_ptr; |
| LLVMValueRef address; |
| |
| tex_fetch_ptrs(bld_base, emit_data, &res_ptr, NULL, NULL); |
| |
| if (target == TGSI_TEXTURE_BUFFER) { |
| /* Read the size from the buffer descriptor directly. */ |
| emit_data->args[0] = get_buffer_size(bld_base, res_ptr); |
| return; |
| } |
| |
| /* Textures - set the mip level. */ |
| address = lp_build_emit_fetch(bld_base, inst, 0, TGSI_CHAN_X); |
| |
| set_tex_fetch_args(ctx, emit_data, TGSI_OPCODE_TXQ, target, res_ptr, |
| NULL, &address, 1, 0xf); |
| } |
| |
| static void txq_emit(const struct lp_build_tgsi_action *action, |
| struct lp_build_tgsi_context *bld_base, |
| struct lp_build_emit_data *emit_data) |
| { |
| struct lp_build_context *base = &bld_base->base; |
| unsigned target = emit_data->inst->Texture.Texture; |
| |
| if (target == TGSI_TEXTURE_BUFFER) { |
| /* Just return the buffer size. */ |
| emit_data->output[emit_data->chan] = emit_data->args[0]; |
| return; |
| } |
| |
| emit_data->output[emit_data->chan] = lp_build_intrinsic( |
| base->gallivm->builder, "llvm.SI.getresinfo.i32", |
| emit_data->dst_type, emit_data->args, emit_data->arg_count, |
| LP_FUNC_ATTR_READNONE); |
| |
| /* Divide the number of layers by 6 to get the number of cubes. */ |
| if (target == TGSI_TEXTURE_CUBE_ARRAY || |
| target == TGSI_TEXTURE_SHADOWCUBE_ARRAY) { |
| LLVMBuilderRef builder = bld_base->base.gallivm->builder; |
| LLVMValueRef two = lp_build_const_int32(bld_base->base.gallivm, 2); |
| LLVMValueRef six = lp_build_const_int32(bld_base->base.gallivm, 6); |
| |
| LLVMValueRef v4 = emit_data->output[emit_data->chan]; |
| LLVMValueRef z = LLVMBuildExtractElement(builder, v4, two, ""); |
| z = LLVMBuildSDiv(builder, z, six, ""); |
| |
| emit_data->output[emit_data->chan] = |
| LLVMBuildInsertElement(builder, v4, z, two, ""); |
| } |
| } |
| |
| static void tex_fetch_args( |
| struct lp_build_tgsi_context *bld_base, |
| struct lp_build_emit_data *emit_data) |
| { |
| struct si_shader_context *ctx = si_shader_context(bld_base); |
| struct gallivm_state *gallivm = bld_base->base.gallivm; |
| const struct tgsi_full_instruction *inst = emit_data->inst; |
| unsigned opcode = inst->Instruction.Opcode; |
| unsigned target = inst->Texture.Texture; |
| LLVMValueRef coords[5], derivs[6]; |
| LLVMValueRef address[16]; |
| unsigned num_coords = tgsi_util_get_texture_coord_dim(target); |
| int ref_pos = tgsi_util_get_shadow_ref_src_index(target); |
| unsigned count = 0; |
| unsigned chan; |
| unsigned num_deriv_channels = 0; |
| bool has_offset = inst->Texture.NumOffsets > 0; |
| LLVMValueRef res_ptr, samp_ptr, fmask_ptr = NULL; |
| unsigned dmask = 0xf; |
| |
| tex_fetch_ptrs(bld_base, emit_data, &res_ptr, &samp_ptr, &fmask_ptr); |
| |
| if (target == TGSI_TEXTURE_BUFFER) { |
| emit_data->dst_type = ctx->v4f32; |
| emit_data->args[0] = LLVMBuildBitCast(gallivm->builder, res_ptr, |
| ctx->v16i8, ""); |
| emit_data->args[1] = bld_base->uint_bld.zero; |
| emit_data->args[2] = lp_build_emit_fetch(bld_base, emit_data->inst, 0, TGSI_CHAN_X); |
| emit_data->arg_count = 3; |
| return; |
| } |
| |
| /* Fetch and project texture coordinates */ |
| coords[3] = lp_build_emit_fetch(bld_base, emit_data->inst, 0, TGSI_CHAN_W); |
| for (chan = 0; chan < 3; chan++ ) { |
| coords[chan] = lp_build_emit_fetch(bld_base, |
| emit_data->inst, 0, |
| chan); |
| if (opcode == TGSI_OPCODE_TXP) |
| coords[chan] = lp_build_emit_llvm_binary(bld_base, |
| TGSI_OPCODE_DIV, |
| coords[chan], |
| coords[3]); |
| } |
| |
| if (opcode == TGSI_OPCODE_TXP) |
| coords[3] = bld_base->base.one; |
| |
| /* Pack offsets. */ |
| if (has_offset && opcode != TGSI_OPCODE_TXF) { |
| /* The offsets are six-bit signed integers packed like this: |
| * X=[5:0], Y=[13:8], and Z=[21:16]. |
| */ |
| LLVMValueRef offset[3], pack; |
| |
| assert(inst->Texture.NumOffsets == 1); |
| |
| for (chan = 0; chan < 3; chan++) { |
| offset[chan] = lp_build_emit_fetch_texoffset(bld_base, |
| emit_data->inst, 0, chan); |
| offset[chan] = LLVMBuildAnd(gallivm->builder, offset[chan], |
| lp_build_const_int32(gallivm, 0x3f), ""); |
| if (chan) |
| offset[chan] = LLVMBuildShl(gallivm->builder, offset[chan], |
| lp_build_const_int32(gallivm, chan*8), ""); |
| } |
| |
| pack = LLVMBuildOr(gallivm->builder, offset[0], offset[1], ""); |
| pack = LLVMBuildOr(gallivm->builder, pack, offset[2], ""); |
| address[count++] = pack; |
| } |
| |
| /* Pack LOD bias value */ |
| if (opcode == TGSI_OPCODE_TXB) |
| address[count++] = coords[3]; |
| if (opcode == TGSI_OPCODE_TXB2) |
| address[count++] = lp_build_emit_fetch(bld_base, inst, 1, TGSI_CHAN_X); |
| |
| /* Pack depth comparison value */ |
| if (tgsi_is_shadow_target(target) && opcode != TGSI_OPCODE_LODQ) { |
| LLVMValueRef z; |
| |
| if (target == TGSI_TEXTURE_SHADOWCUBE_ARRAY) { |
| z = lp_build_emit_fetch(bld_base, inst, 1, TGSI_CHAN_X); |
| } else { |
| assert(ref_pos >= 0); |
| z = coords[ref_pos]; |
| } |
| |
| /* TC-compatible HTILE promotes Z16 and Z24 to Z32_FLOAT, |
| * so the depth comparison value isn't clamped for Z16 and |
| * Z24 anymore. Do it manually here. |
| * |
| * It's unnecessary if the original texture format was |
| * Z32_FLOAT, but we don't know that here. |
| */ |
| if (ctx->screen->b.chip_class == VI) |
| z = si_llvm_saturate(bld_base, z); |
| |
| address[count++] = z; |
| } |
| |
| /* Pack user derivatives */ |
| if (opcode == TGSI_OPCODE_TXD) { |
| int param, num_src_deriv_channels; |
| |
| switch (target) { |
| case TGSI_TEXTURE_3D: |
| num_src_deriv_channels = 3; |
| num_deriv_channels = 3; |
| break; |
| case TGSI_TEXTURE_2D: |
| case TGSI_TEXTURE_SHADOW2D: |
| case TGSI_TEXTURE_RECT: |
| case TGSI_TEXTURE_SHADOWRECT: |
| case TGSI_TEXTURE_2D_ARRAY: |
| case TGSI_TEXTURE_SHADOW2D_ARRAY: |
| num_src_deriv_channels = 2; |
| num_deriv_channels = 2; |
| break; |
| case TGSI_TEXTURE_CUBE: |
| case TGSI_TEXTURE_SHADOWCUBE: |
| case TGSI_TEXTURE_CUBE_ARRAY: |
| case TGSI_TEXTURE_SHADOWCUBE_ARRAY: |
| /* Cube derivatives will be converted to 2D. */ |
| num_src_deriv_channels = 3; |
| num_deriv_channels = 2; |
| break; |
| case TGSI_TEXTURE_1D: |
| case TGSI_TEXTURE_SHADOW1D: |
| case TGSI_TEXTURE_1D_ARRAY: |
| case TGSI_TEXTURE_SHADOW1D_ARRAY: |
| num_src_deriv_channels = 1; |
| num_deriv_channels = 1; |
| break; |
| default: |
| unreachable("invalid target"); |
| } |
| |
| for (param = 0; param < 2; param++) |
| for (chan = 0; chan < num_src_deriv_channels; chan++) |
| derivs[param * num_src_deriv_channels + chan] = |
| lp_build_emit_fetch(bld_base, inst, param+1, chan); |
| } |
| |
| if (target == TGSI_TEXTURE_CUBE || |
| target == TGSI_TEXTURE_CUBE_ARRAY || |
| target == TGSI_TEXTURE_SHADOWCUBE || |
| target == TGSI_TEXTURE_SHADOWCUBE_ARRAY) |
| ac_prepare_cube_coords(&ctx->ac, |
| opcode == TGSI_OPCODE_TXD, |
| target == TGSI_TEXTURE_CUBE_ARRAY || |
| target == TGSI_TEXTURE_SHADOWCUBE_ARRAY, |
| coords, derivs); |
| |
| if (opcode == TGSI_OPCODE_TXD) |
| for (int i = 0; i < num_deriv_channels * 2; i++) |
| address[count++] = derivs[i]; |
| |
| /* Pack texture coordinates */ |
| address[count++] = coords[0]; |
| if (num_coords > 1) |
| address[count++] = coords[1]; |
| if (num_coords > 2) |
| address[count++] = coords[2]; |
| |
| /* Pack LOD or sample index */ |
| if (opcode == TGSI_OPCODE_TXL || opcode == TGSI_OPCODE_TXF) |
| address[count++] = coords[3]; |
| else if (opcode == TGSI_OPCODE_TXL2) |
| address[count++] = lp_build_emit_fetch(bld_base, inst, 1, TGSI_CHAN_X); |
| |
| if (count > 16) { |
| assert(!"Cannot handle more than 16 texture address parameters"); |
| count = 16; |
| } |
| |
| for (chan = 0; chan < count; chan++ ) { |
| address[chan] = LLVMBuildBitCast(gallivm->builder, |
| address[chan], ctx->i32, ""); |
| } |
| |
| /* Adjust the sample index according to FMASK. |
| * |
| * For uncompressed MSAA surfaces, FMASK should return 0x76543210, |
| * which is the identity mapping. Each nibble says which physical sample |
| * should be fetched to get that sample. |
| * |
| * For example, 0x11111100 means there are only 2 samples stored and |
| * the second sample covers 3/4 of the pixel. When reading samples 0 |
| * and 1, return physical sample 0 (determined by the first two 0s |
| * in FMASK), otherwise return physical sample 1. |
| * |
| * The sample index should be adjusted as follows: |
| * sample_index = (fmask >> (sample_index * 4)) & 0xF; |
| */ |
| if (target == TGSI_TEXTURE_2D_MSAA || |
| target == TGSI_TEXTURE_2D_ARRAY_MSAA) { |
| struct lp_build_context *uint_bld = &bld_base->uint_bld; |
| struct lp_build_emit_data txf_emit_data = *emit_data; |
| LLVMValueRef txf_address[4]; |
| unsigned txf_count = count; |
| struct tgsi_full_instruction inst = {}; |
| |
| memcpy(txf_address, address, sizeof(txf_address)); |
| |
| if (target == TGSI_TEXTURE_2D_MSAA) { |
| txf_address[2] = bld_base->uint_bld.zero; |
| } |
| txf_address[3] = bld_base->uint_bld.zero; |
| |
| /* Read FMASK using TXF. */ |
| inst.Instruction.Opcode = TGSI_OPCODE_TXF; |
| inst.Texture.Texture = target; |
| txf_emit_data.inst = &inst; |
| txf_emit_data.chan = 0; |
| set_tex_fetch_args(ctx, &txf_emit_data, TGSI_OPCODE_TXF, |
| target, fmask_ptr, NULL, |
| txf_address, txf_count, 0xf); |
| build_tex_intrinsic(&tex_action, bld_base, &txf_emit_data); |
| |
| /* Initialize some constants. */ |
| LLVMValueRef four = LLVMConstInt(ctx->i32, 4, 0); |
| LLVMValueRef F = LLVMConstInt(ctx->i32, 0xF, 0); |
| |
| /* Apply the formula. */ |
| LLVMValueRef fmask = |
| LLVMBuildExtractElement(gallivm->builder, |
| txf_emit_data.output[0], |
| uint_bld->zero, ""); |
| |
| unsigned sample_chan = target == TGSI_TEXTURE_2D_MSAA ? 2 : 3; |
| |
| LLVMValueRef sample_index4 = |
| LLVMBuildMul(gallivm->builder, address[sample_chan], four, ""); |
| |
| LLVMValueRef shifted_fmask = |
| LLVMBuildLShr(gallivm->builder, fmask, sample_index4, ""); |
| |
| LLVMValueRef final_sample = |
| LLVMBuildAnd(gallivm->builder, shifted_fmask, F, ""); |
| |
| /* Don't rewrite the sample index if WORD1.DATA_FORMAT of the FMASK |
| * resource descriptor is 0 (invalid), |
| */ |
| LLVMValueRef fmask_desc = |
| LLVMBuildBitCast(gallivm->builder, fmask_ptr, |
| ctx->v8i32, ""); |
| |
| LLVMValueRef fmask_word1 = |
| LLVMBuildExtractElement(gallivm->builder, fmask_desc, |
| uint_bld->one, ""); |
| |
| LLVMValueRef word1_is_nonzero = |
| LLVMBuildICmp(gallivm->builder, LLVMIntNE, |
| fmask_word1, uint_bld->zero, ""); |
| |
| /* Replace the MSAA sample index. */ |
| address[sample_chan] = |
| LLVMBuildSelect(gallivm->builder, word1_is_nonzero, |
| final_sample, address[sample_chan], ""); |
| } |
| |
| if (opcode == TGSI_OPCODE_TXF) { |
| /* add tex offsets */ |
| if (inst->Texture.NumOffsets) { |
| struct lp_build_context *uint_bld = &bld_base->uint_bld; |
| const struct tgsi_texture_offset *off = inst->TexOffsets; |
| |
| assert(inst->Texture.NumOffsets == 1); |
| |
| switch (target) { |
| case TGSI_TEXTURE_3D: |
| address[2] = lp_build_add(uint_bld, address[2], |
| ctx->imms[off->Index * TGSI_NUM_CHANNELS + off->SwizzleZ]); |
| /* fall through */ |
| case TGSI_TEXTURE_2D: |
| case TGSI_TEXTURE_SHADOW2D: |
| case TGSI_TEXTURE_RECT: |
| case TGSI_TEXTURE_SHADOWRECT: |
| case TGSI_TEXTURE_2D_ARRAY: |
| case TGSI_TEXTURE_SHADOW2D_ARRAY: |
| address[1] = |
| lp_build_add(uint_bld, address[1], |
| ctx->imms[off->Index * TGSI_NUM_CHANNELS + off->SwizzleY]); |
| /* fall through */ |
| case TGSI_TEXTURE_1D: |
| case TGSI_TEXTURE_SHADOW1D: |
| case TGSI_TEXTURE_1D_ARRAY: |
| case TGSI_TEXTURE_SHADOW1D_ARRAY: |
| address[0] = |
| lp_build_add(uint_bld, address[0], |
| ctx->imms[off->Index * TGSI_NUM_CHANNELS + off->SwizzleX]); |
| break; |
| /* texture offsets do not apply to other texture targets */ |
| } |
| } |
| } |
| |
| if (opcode == TGSI_OPCODE_TG4) { |
| unsigned gather_comp = 0; |
| |
| /* DMASK was repurposed for GATHER4. 4 components are always |
| * returned and DMASK works like a swizzle - it selects |
| * the component to fetch. The only valid DMASK values are |
| * 1=red, 2=green, 4=blue, 8=alpha. (e.g. 1 returns |
| * (red,red,red,red) etc.) The ISA document doesn't mention |
| * this. |
| */ |
| |
| /* Get the component index from src1.x for Gather4. */ |
| if (!tgsi_is_shadow_target(target)) { |
| LLVMValueRef comp_imm; |
| struct tgsi_src_register src1 = inst->Src[1].Register; |
| |
| assert(src1.File == TGSI_FILE_IMMEDIATE); |
| |
| comp_imm = ctx->imms[src1.Index * TGSI_NUM_CHANNELS + src1.SwizzleX]; |
| gather_comp = LLVMConstIntGetZExtValue(comp_imm); |
| gather_comp = CLAMP(gather_comp, 0, 3); |
| } |
| |
| dmask = 1 << gather_comp; |
| } |
| |
| set_tex_fetch_args(ctx, emit_data, opcode, target, res_ptr, |
| samp_ptr, address, count, dmask); |
| } |
| |
| /* Gather4 should follow the same rules as bilinear filtering, but the hardware |
| * incorrectly forces nearest filtering if the texture format is integer. |
| * The only effect it has on Gather4, which always returns 4 texels for |
| * bilinear filtering, is that the final coordinates are off by 0.5 of |
| * the texel size. |
| * |
| * The workaround is to subtract 0.5 from the unnormalized coordinates, |
| * or (0.5 / size) from the normalized coordinates. |
| */ |
| static void si_lower_gather4_integer(struct si_shader_context *ctx, |
| struct lp_build_emit_data *emit_data, |
| const char *intr_name, |
| unsigned coord_vgpr_index) |
| { |
| LLVMBuilderRef builder = ctx->gallivm.builder; |
| LLVMValueRef coord = emit_data->args[0]; |
| LLVMValueRef half_texel[2]; |
| int c; |
| |
| if (emit_data->inst->Texture.Texture == TGSI_TEXTURE_RECT || |
| emit_data->inst->Texture.Texture == TGSI_TEXTURE_SHADOWRECT) { |
| half_texel[0] = half_texel[1] = LLVMConstReal(ctx->f32, -0.5); |
| } else { |
| struct tgsi_full_instruction txq_inst = {}; |
| struct lp_build_emit_data txq_emit_data = {}; |
| |
| /* Query the texture size. */ |
| txq_inst.Texture.Texture = emit_data->inst->Texture.Texture; |
| txq_emit_data.inst = &txq_inst; |
| txq_emit_data.dst_type = ctx->v4i32; |
| set_tex_fetch_args(ctx, &txq_emit_data, TGSI_OPCODE_TXQ, |
| txq_inst.Texture.Texture, |
| emit_data->args[1], NULL, |
| &ctx->bld_base.uint_bld.zero, |
| 1, 0xf); |
| txq_emit(NULL, &ctx->bld_base, &txq_emit_data); |
| |
| /* Compute -0.5 / size. */ |
| for (c = 0; c < 2; c++) { |
| half_texel[c] = |
| LLVMBuildExtractElement(builder, txq_emit_data.output[0], |
| LLVMConstInt(ctx->i32, c, 0), ""); |
| half_texel[c] = LLVMBuildUIToFP(builder, half_texel[c], ctx->f32, ""); |
| half_texel[c] = |
| lp_build_emit_llvm_unary(&ctx->bld_base, |
| TGSI_OPCODE_RCP, half_texel[c]); |
| half_texel[c] = LLVMBuildFMul(builder, half_texel[c], |
| LLVMConstReal(ctx->f32, -0.5), ""); |
| } |
| } |
| |
| for (c = 0; c < 2; c++) { |
| LLVMValueRef tmp; |
| LLVMValueRef index = LLVMConstInt(ctx->i32, coord_vgpr_index + c, 0); |
| |
| tmp = LLVMBuildExtractElement(builder, coord, index, ""); |
| tmp = LLVMBuildBitCast(builder, tmp, ctx->f32, ""); |
| tmp = LLVMBuildFAdd(builder, tmp, half_texel[c], ""); |
| tmp = LLVMBuildBitCast(builder, tmp, ctx->i32, ""); |
| coord = LLVMBuildInsertElement(builder, coord, tmp, index, ""); |
| } |
| |
| emit_data->args[0] = coord; |
| emit_data->output[emit_data->chan] = |
| lp_build_intrinsic(builder, intr_name, emit_data->dst_type, |
| emit_data->args, emit_data->arg_count, |
| LP_FUNC_ATTR_READNONE); |
| } |
| |
| static void build_tex_intrinsic(const struct lp_build_tgsi_action *action, |
| struct lp_build_tgsi_context *bld_base, |
| struct lp_build_emit_data *emit_data) |
| { |
| struct si_shader_context *ctx = si_shader_context(bld_base); |
| struct lp_build_context *base = &bld_base->base; |
| const struct tgsi_full_instruction *inst = emit_data->inst; |
| unsigned opcode = inst->Instruction.Opcode; |
| unsigned target = inst->Texture.Texture; |
| char intr_name[127]; |
| bool has_offset = inst->Texture.NumOffsets > 0; |
| bool is_shadow = tgsi_is_shadow_target(target); |
| char type[64]; |
| const char *name = "llvm.SI.image.sample"; |
| const char *infix = ""; |
| |
| if (target == TGSI_TEXTURE_BUFFER) { |
| emit_data->output[emit_data->chan] = lp_build_intrinsic( |
| base->gallivm->builder, |
| "llvm.SI.vs.load.input", emit_data->dst_type, |
| emit_data->args, emit_data->arg_count, |
| LP_FUNC_ATTR_READNONE); |
| return; |
| } |
| |
| switch (opcode) { |
| case TGSI_OPCODE_TXF: |
| name = target == TGSI_TEXTURE_2D_MSAA || |
| target == TGSI_TEXTURE_2D_ARRAY_MSAA ? |
| "llvm.SI.image.load" : |
| "llvm.SI.image.load.mip"; |
| is_shadow = false; |
| has_offset = false; |
| break; |
| case TGSI_OPCODE_LODQ: |
| name = "llvm.SI.getlod"; |
| is_shadow = false; |
| has_offset = false; |
| break; |
| case TGSI_OPCODE_TEX: |
| case TGSI_OPCODE_TEX2: |
| case TGSI_OPCODE_TXP: |
| if (ctx->type != PIPE_SHADER_FRAGMENT) |
| infix = ".lz"; |
| break; |
| case TGSI_OPCODE_TXB: |
| case TGSI_OPCODE_TXB2: |
| assert(ctx->type == PIPE_SHADER_FRAGMENT); |
| infix = ".b"; |
| break; |
| case TGSI_OPCODE_TXL: |
| case TGSI_OPCODE_TXL2: |
| infix = ".l"; |
| break; |
| case TGSI_OPCODE_TXD: |
| infix = ".d"; |
| break; |
| case TGSI_OPCODE_TG4: |
| name = "llvm.SI.gather4"; |
| infix = ".lz"; |
| break; |
| default: |
| assert(0); |
| return; |
| } |
| |
| /* Add the type and suffixes .c, .o if needed. */ |
| build_type_name_for_intr(LLVMTypeOf(emit_data->args[0]), type, sizeof(type)); |
| sprintf(intr_name, "%s%s%s%s.%s", |
| name, is_shadow ? ".c" : "", infix, |
| has_offset ? ".o" : "", type); |
| |
| /* The hardware needs special lowering for Gather4 with integer formats. */ |
| if (opcode == TGSI_OPCODE_TG4) { |
| struct tgsi_shader_info *info = &ctx->shader->selector->info; |
| /* This will also work with non-constant indexing because of how |
| * glsl_to_tgsi works and we intent to preserve that behavior. |
| */ |
| const unsigned src_idx = 2; |
| unsigned sampler = inst->Src[src_idx].Register.Index; |
| |
| assert(inst->Src[src_idx].Register.File == TGSI_FILE_SAMPLER); |
| |
| if (info->sampler_type[sampler] == TGSI_RETURN_TYPE_SINT || |
| info->sampler_type[sampler] == TGSI_RETURN_TYPE_UINT) { |
| /* Texture coordinates start after: |
| * {offset, bias, z-compare, derivatives} |
| * Only the offset and z-compare can occur here. |
| */ |
| si_lower_gather4_integer(ctx, emit_data, intr_name, |
| (int)has_offset + (int)is_shadow); |
| return; |
| } |
| } |
| |
| emit_data->output[emit_data->chan] = lp_build_intrinsic( |
| base->gallivm->builder, intr_name, emit_data->dst_type, |
| emit_data->args, emit_data->arg_count, |
| LP_FUNC_ATTR_READNONE); |
| } |
| |
| static void si_llvm_emit_txqs( |
| const struct lp_build_tgsi_action *action, |
| struct lp_build_tgsi_context *bld_base, |
| struct lp_build_emit_data *emit_data) |
| { |
| struct si_shader_context *ctx = si_shader_context(bld_base); |
| struct gallivm_state *gallivm = bld_base->base.gallivm; |
| LLVMBuilderRef builder = gallivm->builder; |
| LLVMValueRef res, samples; |
| LLVMValueRef res_ptr, samp_ptr, fmask_ptr = NULL; |
| |
| tex_fetch_ptrs(bld_base, emit_data, &res_ptr, &samp_ptr, &fmask_ptr); |
| |
| |
| /* Read the samples from the descriptor directly. */ |
| res = LLVMBuildBitCast(builder, res_ptr, ctx->v8i32, ""); |
| samples = LLVMBuildExtractElement( |
| builder, res, |
| lp_build_const_int32(gallivm, 3), ""); |
| samples = LLVMBuildLShr(builder, samples, |
| lp_build_const_int32(gallivm, 16), ""); |
| samples = LLVMBuildAnd(builder, samples, |
| lp_build_const_int32(gallivm, 0xf), ""); |
| samples = LLVMBuildShl(builder, lp_build_const_int32(gallivm, 1), |
| samples, ""); |
| |
| emit_data->output[emit_data->chan] = samples; |
| } |
| |
| /* |
| * SI implements derivatives using the local data store (LDS) |
| * All writes to the LDS happen in all executing threads at |
| * the same time. TID is the Thread ID for the current |
| * thread and is a value between 0 and 63, representing |
| * the thread's position in the wavefront. |
| * |
| * For the pixel shader threads are grouped into quads of four pixels. |
| * The TIDs of the pixels of a quad are: |
| * |
| * +------+------+ |
| * |4n + 0|4n + 1| |
| * +------+------+ |
| * |4n + 2|4n + 3| |
| * +------+------+ |
| * |
| * So, masking the TID with 0xfffffffc yields the TID of the top left pixel |
| * of the quad, masking with 0xfffffffd yields the TID of the top pixel of |
| * the current pixel's column, and masking with 0xfffffffe yields the TID |
| * of the left pixel of the current pixel's row. |
| * |
| * Adding 1 yields the TID of the pixel to the right of the left pixel, and |
| * adding 2 yields the TID of the pixel below the top pixel. |
| */ |
| /* masks for thread ID. */ |
| #define TID_MASK_TOP_LEFT 0xfffffffc |
| #define TID_MASK_TOP 0xfffffffd |
| #define TID_MASK_LEFT 0xfffffffe |
| |
| static void si_llvm_emit_ddxy( |
| const struct lp_build_tgsi_action *action, |
| struct lp_build_tgsi_context *bld_base, |
| struct lp_build_emit_data *emit_data) |
| { |
| struct si_shader_context *ctx = si_shader_context(bld_base); |
| struct gallivm_state *gallivm = bld_base->base.gallivm; |
| unsigned opcode = emit_data->info->opcode; |
| LLVMValueRef thread_id, tl, trbl, tl_tid, trbl_tid, val, args[2]; |
| int idx; |
| unsigned mask; |
| |
| thread_id = get_thread_id(ctx); |
| |
| if (opcode == TGSI_OPCODE_DDX_FINE) |
| mask = TID_MASK_LEFT; |
| else if (opcode == TGSI_OPCODE_DDY_FINE) |
| mask = TID_MASK_TOP; |
| else |
| mask = TID_MASK_TOP_LEFT; |
| |
| tl_tid = LLVMBuildAnd(gallivm->builder, thread_id, |
| lp_build_const_int32(gallivm, mask), ""); |
| |
| /* for DDX we want to next X pixel, DDY next Y pixel. */ |
| idx = (opcode == TGSI_OPCODE_DDX || opcode == TGSI_OPCODE_DDX_FINE) ? 1 : 2; |
| trbl_tid = LLVMBuildAdd(gallivm->builder, tl_tid, |
| lp_build_const_int32(gallivm, idx), ""); |
| |
| val = LLVMBuildBitCast(gallivm->builder, emit_data->args[0], ctx->i32, ""); |
| |
| if (ctx->screen->has_ds_bpermute) { |
| args[0] = LLVMBuildMul(gallivm->builder, tl_tid, |
| lp_build_const_int32(gallivm, 4), ""); |
| args[1] = val; |
| tl = lp_build_intrinsic(gallivm->builder, |
| "llvm.amdgcn.ds.bpermute", ctx->i32, |
| args, 2, LP_FUNC_ATTR_READNONE); |
| |
| args[0] = LLVMBuildMul(gallivm->builder, trbl_tid, |
| lp_build_const_int32(gallivm, 4), ""); |
| trbl = lp_build_intrinsic(gallivm->builder, |
| "llvm.amdgcn.ds.bpermute", ctx->i32, |
| args, 2, LP_FUNC_ATTR_READNONE); |
| } else { |
| LLVMValueRef store_ptr, load_ptr0, load_ptr1; |
| |
| store_ptr = build_gep0(ctx, ctx->lds, thread_id); |
| load_ptr0 = build_gep0(ctx, ctx->lds, tl_tid); |
| load_ptr1 = build_gep0(ctx, ctx->lds, trbl_tid); |
| |
| LLVMBuildStore(gallivm->builder, val, store_ptr); |
| tl = LLVMBuildLoad(gallivm->builder, load_ptr0, ""); |
| trbl = LLVMBuildLoad(gallivm->builder, load_ptr1, ""); |
| } |
| |
| tl = LLVMBuildBitCast(gallivm->builder, tl, ctx->f32, ""); |
| trbl = LLVMBuildBitCast(gallivm->builder, trbl, ctx->f32, ""); |
| |
| emit_data->output[emit_data->chan] = |
| LLVMBuildFSub(gallivm->builder, trbl, tl, ""); |
| } |
| |
| /* |
| * this takes an I,J coordinate pair, |
| * and works out the X and Y derivatives. |
| * it returns DDX(I), DDX(J), DDY(I), DDY(J). |
| */ |
| static LLVMValueRef si_llvm_emit_ddxy_interp( |
| struct lp_build_tgsi_context *bld_base, |
| LLVMValueRef interp_ij) |
| { |
| struct si_shader_context *ctx = si_shader_context(bld_base); |
| struct gallivm_state *gallivm = bld_base->base.gallivm; |
| LLVMValueRef result[4], a; |
| unsigned i; |
| |
| for (i = 0; i < 2; i++) { |
| a = LLVMBuildExtractElement(gallivm->builder, interp_ij, |
| LLVMConstInt(ctx->i32, i, 0), ""); |
| result[i] = lp_build_emit_llvm_unary(bld_base, TGSI_OPCODE_DDX, a); |
| result[2+i] = lp_build_emit_llvm_unary(bld_base, TGSI_OPCODE_DDY, a); |
| } |
| |
| return lp_build_gather_values(gallivm, result, 4); |
| } |
| |
| static void interp_fetch_args( |
| struct lp_build_tgsi_context *bld_base, |
| struct lp_build_emit_data *emit_data) |
| { |
| struct si_shader_context *ctx = si_shader_context(bld_base); |
| struct gallivm_state *gallivm = bld_base->base.gallivm; |
| const struct tgsi_full_instruction *inst = emit_data->inst; |
| |
| if (inst->Instruction.Opcode == TGSI_OPCODE_INTERP_OFFSET) { |
| /* offset is in second src, first two channels */ |
| emit_data->args[0] = lp_build_emit_fetch(bld_base, |
| emit_data->inst, 1, |
| TGSI_CHAN_X); |
| emit_data->args[1] = lp_build_emit_fetch(bld_base, |
| emit_data->inst, 1, |
| TGSI_CHAN_Y); |
| emit_data->arg_count = 2; |
| } else if (inst->Instruction.Opcode == TGSI_OPCODE_INTERP_SAMPLE) { |
| LLVMValueRef sample_position; |
| LLVMValueRef sample_id; |
| LLVMValueRef halfval = lp_build_const_float(gallivm, 0.5f); |
| |
| /* fetch sample ID, then fetch its sample position, |
| * and place into first two channels. |
| */ |
| sample_id = lp_build_emit_fetch(bld_base, |
| emit_data->inst, 1, TGSI_CHAN_X); |
| sample_id = LLVMBuildBitCast(gallivm->builder, sample_id, |
| ctx->i32, ""); |
| sample_position = load_sample_position(ctx, sample_id); |
| |
| emit_data->args[0] = LLVMBuildExtractElement(gallivm->builder, |
| sample_position, |
| lp_build_const_int32(gallivm, 0), ""); |
| |
| emit_data->args[0] = LLVMBuildFSub(gallivm->builder, emit_data->args[0], halfval, ""); |
| emit_data->args[1] = LLVMBuildExtractElement(gallivm->builder, |
| sample_position, |
| lp_build_const_int32(gallivm, 1), ""); |
| emit_data->args[1] = LLVMBuildFSub(gallivm->builder, emit_data->args[1], halfval, ""); |
| emit_data->arg_count = 2; |
| } |
| } |
| |
| static void build_interp_intrinsic(const struct lp_build_tgsi_action *action, |
| struct lp_build_tgsi_context *bld_base, |
| struct lp_build_emit_data *emit_data) |
| { |
| struct si_shader_context *ctx = si_shader_context(bld_base); |
| struct si_shader *shader = ctx->shader; |
| struct gallivm_state *gallivm = bld_base->base.gallivm; |
| struct lp_build_context *uint = &bld_base->uint_bld; |
| LLVMValueRef interp_param; |
| const struct tgsi_full_instruction *inst = emit_data->inst; |
| int input_index = inst->Src[0].Register.Index; |
| int chan; |
| int i; |
| LLVMValueRef attr_number; |
| LLVMValueRef params = LLVMGetParam(ctx->main_fn, SI_PARAM_PRIM_MASK); |
| int interp_param_idx; |
| unsigned interp = shader->selector->info.input_interpolate[input_index]; |
| unsigned location; |
| |
| assert(inst->Src[0].Register.File == TGSI_FILE_INPUT); |
| |
| if (inst->Instruction.Opcode == TGSI_OPCODE_INTERP_OFFSET || |
| inst->Instruction.Opcode == TGSI_OPCODE_INTERP_SAMPLE) |
| location = TGSI_INTERPOLATE_LOC_CENTER; |
| else |
| location = TGSI_INTERPOLATE_LOC_CENTROID; |
| |
| interp_param_idx = lookup_interp_param_index(interp, location); |
| if (interp_param_idx == -1) |
| return; |
| else if (interp_param_idx) |
| interp_param = LLVMGetParam(ctx->main_fn, interp_param_idx); |
| else |
| interp_param = NULL; |
| |
| attr_number = lp_build_const_int32(gallivm, input_index); |
| |
| if (inst->Instruction.Opcode == TGSI_OPCODE_INTERP_OFFSET || |
| inst->Instruction.Opcode == TGSI_OPCODE_INTERP_SAMPLE) { |
| LLVMValueRef ij_out[2]; |
| LLVMValueRef ddxy_out = si_llvm_emit_ddxy_interp(bld_base, interp_param); |
| |
| /* |
| * take the I then J parameters, and the DDX/Y for it, and |
| * calculate the IJ inputs for the interpolator. |
| * temp1 = ddx * offset/sample.x + I; |
| * interp_param.I = ddy * offset/sample.y + temp1; |
| * temp1 = ddx * offset/sample.x + J; |
| * interp_param.J = ddy * offset/sample.y + temp1; |
| */ |
| for (i = 0; i < 2; i++) { |
| LLVMValueRef ix_ll = lp_build_const_int32(gallivm, i); |
| LLVMValueRef iy_ll = lp_build_const_int32(gallivm, i + 2); |
| LLVMValueRef ddx_el = LLVMBuildExtractElement(gallivm->builder, |
| ddxy_out, ix_ll, ""); |
| LLVMValueRef ddy_el = LLVMBuildExtractElement(gallivm->builder, |
| ddxy_out, iy_ll, ""); |
| LLVMValueRef interp_el = LLVMBuildExtractElement(gallivm->builder, |
| interp_param, ix_ll, ""); |
| LLVMValueRef temp1, temp2; |
| |
| interp_el = LLVMBuildBitCast(gallivm->builder, interp_el, |
| ctx->f32, ""); |
| |
| temp1 = LLVMBuildFMul(gallivm->builder, ddx_el, emit_data->args[0], ""); |
| |
| temp1 = LLVMBuildFAdd(gallivm->builder, temp1, interp_el, ""); |
| |
| temp2 = LLVMBuildFMul(gallivm->builder, ddy_el, emit_data->args[1], ""); |
| |
| ij_out[i] = LLVMBuildFAdd(gallivm->builder, temp2, temp1, ""); |
| } |
| interp_param = lp_build_gather_values(bld_base->base.gallivm, ij_out, 2); |
| } |
| |
| for (chan = 0; chan < 4; chan++) { |
| LLVMValueRef llvm_chan; |
| unsigned schan; |
| |
| schan = tgsi_util_get_full_src_register_swizzle(&inst->Src[0], chan); |
| llvm_chan = lp_build_const_int32(gallivm, schan); |
| |
| if (interp_param) { |
| interp_param = LLVMBuildBitCast(gallivm->builder, |
| interp_param, LLVMVectorType(ctx->f32, 2), ""); |
| LLVMValueRef i = LLVMBuildExtractElement( |
| gallivm->builder, interp_param, uint->zero, ""); |
| LLVMValueRef j = LLVMBuildExtractElement( |
| gallivm->builder, interp_param, uint->one, ""); |
| emit_data->output[chan] = build_fs_interp(bld_base, |
| llvm_chan, attr_number, params, |
| i, j); |
| } else { |
| emit_data->output[chan] = build_fs_interp_mov(bld_base, |
| lp_build_const_int32(gallivm, 2), /* P0 */ |
| llvm_chan, attr_number, params); |
| } |
| } |
| } |
| |
| static unsigned si_llvm_get_stream(struct lp_build_tgsi_context *bld_base, |
| struct lp_build_emit_data *emit_data) |
| { |
| struct si_shader_context *ctx = si_shader_context(bld_base); |
| struct tgsi_src_register src0 = emit_data->inst->Src[0].Register; |
| LLVMValueRef imm; |
| unsigned stream; |
| |
| assert(src0.File == TGSI_FILE_IMMEDIATE); |
| |
| imm = ctx->imms[src0.Index * TGSI_NUM_CHANNELS + src0.SwizzleX]; |
| stream = LLVMConstIntGetZExtValue(imm) & 0x3; |
| return stream; |
| } |
| |
| /* Emit one vertex from the geometry shader */ |
| static void si_llvm_emit_vertex( |
| const struct lp_build_tgsi_action *action, |
| struct lp_build_tgsi_context *bld_base, |
| struct lp_build_emit_data *emit_data) |
| { |
| struct si_shader_context *ctx = si_shader_context(bld_base); |
| struct lp_build_context *uint = &bld_base->uint_bld; |
| struct si_shader *shader = ctx->shader; |
| struct tgsi_shader_info *info = &shader->selector->info; |
| struct gallivm_state *gallivm = bld_base->base.gallivm; |
| struct lp_build_if_state if_state; |
| LLVMValueRef soffset = LLVMGetParam(ctx->main_fn, |
| SI_PARAM_GS2VS_OFFSET); |
| LLVMValueRef gs_next_vertex; |
| LLVMValueRef can_emit, kill; |
| LLVMValueRef args[2]; |
| unsigned chan, offset; |
| int i; |
| unsigned stream; |
| |
| stream = si_llvm_get_stream(bld_base, emit_data); |
| |
| /* Write vertex attribute values to GSVS ring */ |
| gs_next_vertex = LLVMBuildLoad(gallivm->builder, |
| ctx->gs_next_vertex[stream], |
| ""); |
| |
| /* If this thread has already emitted the declared maximum number of |
| * vertices, skip the write: excessive vertex emissions are not |
| * supposed to have any effect. |
| * |
| * If the shader has no writes to memory, kill it instead. This skips |
| * further memory loads and may allow LLVM to skip to the end |
| * altogether. |
| */ |
| can_emit = LLVMBuildICmp(gallivm->builder, LLVMIntULT, gs_next_vertex, |
| lp_build_const_int32(gallivm, |
| shader->selector->gs_max_out_vertices), ""); |
| |
| bool use_kill = !info->writes_memory; |
| if (use_kill) { |
| kill = lp_build_select(&bld_base->base, can_emit, |
| lp_build_const_float(gallivm, 1.0f), |
| lp_build_const_float(gallivm, -1.0f)); |
| |
| lp_build_intrinsic(gallivm->builder, "llvm.AMDGPU.kill", |
| ctx->voidt, &kill, 1, 0); |
| } else { |
| lp_build_if(&if_state, gallivm, can_emit); |
| } |
| |
| offset = 0; |
| for (i = 0; i < info->num_outputs; i++) { |
| LLVMValueRef *out_ptr = ctx->outputs[i]; |
| |
| for (chan = 0; chan < 4; chan++) { |
| if (!(info->output_usagemask[i] & (1 << chan)) || |
| ((info->output_streams[i] >> (2 * chan)) & 3) != stream) |
| continue; |
| |
| LLVMValueRef out_val = LLVMBuildLoad(gallivm->builder, out_ptr[chan], ""); |
| LLVMValueRef voffset = |
| lp_build_const_int32(gallivm, offset * |
| shader->selector->gs_max_out_vertices); |
| offset++; |
| |
| voffset = lp_build_add(uint, voffset, gs_next_vertex); |
| voffset = lp_build_mul_imm(uint, voffset, 4); |
| |
| out_val = LLVMBuildBitCast(gallivm->builder, out_val, ctx->i32, ""); |
| |
| build_tbuffer_store(ctx, |
| ctx->gsvs_ring[stream], |
| out_val, 1, |
| voffset, soffset, 0, |
| V_008F0C_BUF_DATA_FORMAT_32, |
| V_008F0C_BUF_NUM_FORMAT_UINT, |
| 1, 0, 1, 1, 0); |
| } |
| } |
| |
| gs_next_vertex = lp_build_add(uint, gs_next_vertex, |
| lp_build_const_int32(gallivm, 1)); |
| |
| LLVMBuildStore(gallivm->builder, gs_next_vertex, ctx->gs_next_vertex[stream]); |
| |
| /* Signal vertex emission */ |
| args[0] = lp_build_const_int32(gallivm, SENDMSG_GS_OP_EMIT | SENDMSG_GS | (stream << 8)); |
| args[1] = LLVMGetParam(ctx->main_fn, SI_PARAM_GS_WAVE_ID); |
| lp_build_intrinsic(gallivm->builder, "llvm.SI.sendmsg", |
| ctx->voidt, args, 2, 0); |
| |
| if (!use_kill) |
| lp_build_endif(&if_state); |
| } |
| |
| /* Cut one primitive from the geometry shader */ |
| static void si_llvm_emit_primitive( |
| const struct lp_build_tgsi_action *action, |
| struct lp_build_tgsi_context *bld_base, |
| struct lp_build_emit_data *emit_data) |
| { |
| struct si_shader_context *ctx = si_shader_context(bld_base); |
| struct gallivm_state *gallivm = bld_base->base.gallivm; |
| LLVMValueRef args[2]; |
| unsigned stream; |
| |
| /* Signal primitive cut */ |
| stream = si_llvm_get_stream(bld_base, emit_data); |
| args[0] = lp_build_const_int32(gallivm, SENDMSG_GS_OP_CUT | SENDMSG_GS | (stream << 8)); |
| args[1] = LLVMGetParam(ctx->main_fn, SI_PARAM_GS_WAVE_ID); |
| lp_build_intrinsic(gallivm->builder, "llvm.SI.sendmsg", |
| ctx->voidt, args, 2, 0); |
| } |
| |
| static void si_llvm_emit_barrier(const struct lp_build_tgsi_action *action, |
| struct lp_build_tgsi_context *bld_base, |
| struct lp_build_emit_data *emit_data) |
| { |
| struct si_shader_context *ctx = si_shader_context(bld_base); |
| struct gallivm_state *gallivm = bld_base->base.gallivm; |
| |
| /* The real barrier instruction isn’t needed, because an entire patch |
| * always fits into a single wave. |
| */ |
| if (ctx->type == PIPE_SHADER_TESS_CTRL) { |
| emit_waitcnt(ctx, LGKM_CNT & VM_CNT); |
| return; |
| } |
| |
| lp_build_intrinsic(gallivm->builder, |
| HAVE_LLVM >= 0x0309 ? "llvm.amdgcn.s.barrier" |
| : "llvm.AMDGPU.barrier.local", |
| ctx->voidt, NULL, 0, 0); |
| } |
| |
| static const struct lp_build_tgsi_action tex_action = { |
| .fetch_args = tex_fetch_args, |
| .emit = build_tex_intrinsic, |
| }; |
| |
| static const struct lp_build_tgsi_action interp_action = { |
| .fetch_args = interp_fetch_args, |
| .emit = build_interp_intrinsic, |
| }; |
| |
| static void si_create_function(struct si_shader_context *ctx, |
| const char *name, |
| LLVMTypeRef *returns, unsigned num_returns, |
| LLVMTypeRef *params, unsigned num_params, |
| int last_sgpr) |
| { |
| int i; |
| |
| si_llvm_create_func(ctx, name, returns, num_returns, |
| params, num_params); |
| si_llvm_shader_type(ctx->main_fn, ctx->type); |
| ctx->return_value = LLVMGetUndef(ctx->return_type); |
| |
| for (i = 0; i <= last_sgpr; ++i) { |
| LLVMValueRef P = LLVMGetParam(ctx->main_fn, i); |
| |
| /* The combination of: |
| * - ByVal |
| * - dereferenceable |
| * - invariant.load |
| * allows the optimization passes to move loads and reduces |
| * SGPR spilling significantly. |
| */ |
| if (LLVMGetTypeKind(LLVMTypeOf(P)) == LLVMPointerTypeKind) { |
| lp_add_function_attr(ctx->main_fn, i + 1, LP_FUNC_ATTR_BYVAL); |
| lp_add_attr_dereferenceable(P, UINT64_MAX); |
| } else |
| lp_add_function_attr(ctx->main_fn, i + 1, LP_FUNC_ATTR_INREG); |
| } |
| |
| if (ctx->screen->b.debug_flags & DBG_UNSAFE_MATH) { |
| /* These were copied from some LLVM test. */ |
| LLVMAddTargetDependentFunctionAttr(ctx->main_fn, |
| "less-precise-fpmad", |
| "true"); |
| LLVMAddTargetDependentFunctionAttr(ctx->main_fn, |
| "no-infs-fp-math", |
| "true"); |
| LLVMAddTargetDependentFunctionAttr(ctx->main_fn, |
| "no-nans-fp-math", |
| "true"); |
| LLVMAddTargetDependentFunctionAttr(ctx->main_fn, |
| "unsafe-fp-math", |
| "true"); |
| } |
| } |
| |
| static void create_meta_data(struct si_shader_context *ctx) |
| { |
| struct gallivm_state *gallivm = ctx->bld_base.base.gallivm; |
| |
| ctx->invariant_load_md_kind = LLVMGetMDKindIDInContext(gallivm->context, |
| "invariant.load", 14); |
| ctx->range_md_kind = LLVMGetMDKindIDInContext(gallivm->context, |
| "range", 5); |
| ctx->uniform_md_kind = LLVMGetMDKindIDInContext(gallivm->context, |
| "amdgpu.uniform", 14); |
| |
| ctx->empty_md = LLVMMDNodeInContext(gallivm->context, NULL, 0); |
| } |
| |
| static void declare_streamout_params(struct si_shader_context *ctx, |
| struct pipe_stream_output_info *so, |
| LLVMTypeRef *params, LLVMTypeRef i32, |
| unsigned *num_params) |
| { |
| int i; |
| |
| /* Streamout SGPRs. */ |
| if (so->num_outputs) { |
| if (ctx->type != PIPE_SHADER_TESS_EVAL) |
| params[ctx->param_streamout_config = (*num_params)++] = i32; |
| else |
| ctx->param_streamout_config = ctx->param_tess_offchip; |
| |
| params[ctx->param_streamout_write_index = (*num_params)++] = i32; |
| } |
| /* A streamout buffer offset is loaded if the stride is non-zero. */ |
| for (i = 0; i < 4; i++) { |
| if (!so->stride[i]) |
| continue; |
| |
| params[ctx->param_streamout_offset[i] = (*num_params)++] = i32; |
| } |
| } |
| |
| static unsigned llvm_get_type_size(LLVMTypeRef type) |
| { |
| LLVMTypeKind kind = LLVMGetTypeKind(type); |
| |
| switch (kind) { |
| case LLVMIntegerTypeKind: |
| return LLVMGetIntTypeWidth(type) / 8; |
| case LLVMFloatTypeKind: |
| return 4; |
| case LLVMPointerTypeKind: |
| return 8; |
| case LLVMVectorTypeKind: |
| return LLVMGetVectorSize(type) * |
| llvm_get_type_size(LLVMGetElementType(type)); |
| case LLVMArrayTypeKind: |
| return LLVMGetArrayLength(type) * |
| llvm_get_type_size(LLVMGetElementType(type)); |
| default: |
| assert(0); |
| return 0; |
| } |
| } |
| |
| static void declare_tess_lds(struct si_shader_context *ctx) |
| { |
| struct gallivm_state *gallivm = &ctx->gallivm; |
| struct lp_build_tgsi_context *bld_base = &ctx->bld_base; |
| struct lp_build_context *uint = &bld_base->uint_bld; |
| |
| unsigned lds_size = ctx->screen->b.chip_class >= CIK ? 65536 : 32768; |
| ctx->lds = LLVMBuildIntToPtr(gallivm->builder, uint->zero, |
| LLVMPointerType(LLVMArrayType(ctx->i32, lds_size / 4), LOCAL_ADDR_SPACE), |
| "tess_lds"); |
| } |
| |
| static unsigned si_get_max_workgroup_size(struct si_shader *shader) |
| { |
| const unsigned *properties = shader->selector->info.properties; |
| unsigned max_work_group_size = |
| properties[TGSI_PROPERTY_CS_FIXED_BLOCK_WIDTH] * |
| properties[TGSI_PROPERTY_CS_FIXED_BLOCK_HEIGHT] * |
| properties[TGSI_PROPERTY_CS_FIXED_BLOCK_DEPTH]; |
| |
| if (!max_work_group_size) { |
| /* This is a variable group size compute shader, |
| * compile it for the maximum possible group size. |
| */ |
| max_work_group_size = SI_MAX_VARIABLE_THREADS_PER_BLOCK; |
| } |
| return max_work_group_size; |
| } |
| |
| static void create_function(struct si_shader_context *ctx) |
| { |
| struct lp_build_tgsi_context *bld_base = &ctx->bld_base; |
| struct gallivm_state *gallivm = bld_base->base.gallivm; |
| struct si_shader *shader = ctx->shader; |
| LLVMTypeRef params[SI_NUM_PARAMS + SI_NUM_VERTEX_BUFFERS], v3i32; |
| LLVMTypeRef returns[16+32*4]; |
| unsigned i, last_sgpr, num_params, num_return_sgprs; |
| unsigned num_returns = 0; |
| unsigned num_prolog_vgprs = 0; |
| |
| v3i32 = LLVMVectorType(ctx->i32, 3); |
| |
| params[SI_PARAM_RW_BUFFERS] = const_array(ctx->v16i8, SI_NUM_RW_BUFFERS); |
| params[SI_PARAM_CONST_BUFFERS] = const_array(ctx->v16i8, SI_NUM_CONST_BUFFERS); |
| params[SI_PARAM_SAMPLERS] = const_array(ctx->v8i32, SI_NUM_SAMPLERS); |
| params[SI_PARAM_IMAGES] = const_array(ctx->v8i32, SI_NUM_IMAGES); |
| params[SI_PARAM_SHADER_BUFFERS] = const_array(ctx->v4i32, SI_NUM_SHADER_BUFFERS); |
| |
| switch (ctx->type) { |
| case PIPE_SHADER_VERTEX: |
| params[SI_PARAM_VERTEX_BUFFERS] = const_array(ctx->v16i8, SI_NUM_VERTEX_BUFFERS); |
| params[SI_PARAM_BASE_VERTEX] = ctx->i32; |
| params[SI_PARAM_START_INSTANCE] = ctx->i32; |
| params[SI_PARAM_DRAWID] = ctx->i32; |
| num_params = SI_PARAM_DRAWID+1; |
| |
| if (shader->key.as_es) { |
| params[ctx->param_es2gs_offset = num_params++] = ctx->i32; |
| } else if (shader->key.as_ls) { |
| params[SI_PARAM_LS_OUT_LAYOUT] = ctx->i32; |
| num_params = SI_PARAM_LS_OUT_LAYOUT+1; |
| } else { |
| if (shader->is_gs_copy_shader) { |
| num_params = SI_PARAM_RW_BUFFERS+1; |
| } else { |
| params[SI_PARAM_VS_STATE_BITS] = ctx->i32; |
| num_params = SI_PARAM_VS_STATE_BITS+1; |
| } |
| |
| /* The locations of the other parameters are assigned dynamically. */ |
| declare_streamout_params(ctx, &shader->selector->so, |
| params, ctx->i32, &num_params); |
| } |
| |
| last_sgpr = num_params-1; |
| |
| /* VGPRs */ |
| params[ctx->param_vertex_id = num_params++] = ctx->i32; |
| params[ctx->param_rel_auto_id = num_params++] = ctx->i32; |
| params[ctx->param_vs_prim_id = num_params++] = ctx->i32; |
| params[ctx->param_instance_id = num_params++] = ctx->i32; |
| |
| if (!shader->is_gs_copy_shader) { |
| /* Vertex load indices. */ |
| ctx->param_vertex_index0 = num_params; |
| |
| for (i = 0; i < shader->selector->info.num_inputs; i++) |
| params[num_params++] = ctx->i32; |
| |
| num_prolog_vgprs += shader->selector->info.num_inputs; |
| |
| /* PrimitiveID output. */ |
| if (!shader->key.as_es && !shader->key.as_ls) |
| for (i = 0; i <= VS_EPILOG_PRIMID_LOC; i++) |
| returns[num_returns++] = ctx->f32; |
| } |
| break; |
| |
| case PIPE_SHADER_TESS_CTRL: |
| params[SI_PARAM_TCS_OFFCHIP_LAYOUT] = ctx->i32; |
| params[SI_PARAM_TCS_OUT_OFFSETS] = ctx->i32; |
| params[SI_PARAM_TCS_OUT_LAYOUT] = ctx->i32; |
| params[SI_PARAM_TCS_IN_LAYOUT] = ctx->i32; |
| params[ctx->param_oc_lds = SI_PARAM_TCS_OC_LDS] = ctx->i32; |
| params[SI_PARAM_TESS_FACTOR_OFFSET] = ctx->i32; |
| last_sgpr = SI_PARAM_TESS_FACTOR_OFFSET; |
| |
| /* VGPRs */ |
| params[SI_PARAM_PATCH_ID] = ctx->i32; |
| params[SI_PARAM_REL_IDS] = ctx->i32; |
| num_params = SI_PARAM_REL_IDS+1; |
| |
| /* SI_PARAM_TCS_OC_LDS and PARAM_TESS_FACTOR_OFFSET are |
| * placed after the user SGPRs. |
| */ |
| for (i = 0; i < SI_TCS_NUM_USER_SGPR + 2; i++) |
| returns[num_returns++] = ctx->i32; /* SGPRs */ |
| |
| for (i = 0; i < 3; i++) |
| returns[num_returns++] = ctx->f32; /* VGPRs */ |
| break; |
| |
| case PIPE_SHADER_TESS_EVAL: |
| params[SI_PARAM_TCS_OFFCHIP_LAYOUT] = ctx->i32; |
| num_params = SI_PARAM_TCS_OFFCHIP_LAYOUT+1; |
| |
| if (shader->key.as_es) { |
| params[ctx->param_oc_lds = num_params++] = ctx->i32; |
| params[ctx->param_tess_offchip = num_params++] = ctx->i32; |
| params[ctx->param_es2gs_offset = num_params++] = ctx->i32; |
| } else { |
| params[ctx->param_tess_offchip = num_params++] = ctx->i32; |
| declare_streamout_params(ctx, &shader->selector->so, |
| params, ctx->i32, &num_params); |
| params[ctx->param_oc_lds = num_params++] = ctx->i32; |
| } |
| last_sgpr = num_params - 1; |
| |
| /* VGPRs */ |
| params[ctx->param_tes_u = num_params++] = ctx->f32; |
| params[ctx->param_tes_v = num_params++] = ctx->f32; |
| params[ctx->param_tes_rel_patch_id = num_params++] = ctx->i32; |
| params[ctx->param_tes_patch_id = num_params++] = ctx->i32; |
| |
| /* PrimitiveID output. */ |
| if (!shader->key.as_es) |
| for (i = 0; i <= VS_EPILOG_PRIMID_LOC; i++) |
| returns[num_returns++] = ctx->f32; |
| break; |
| |
| case PIPE_SHADER_GEOMETRY: |
| params[SI_PARAM_GS2VS_OFFSET] = ctx->i32; |
| params[SI_PARAM_GS_WAVE_ID] = ctx->i32; |
| last_sgpr = SI_PARAM_GS_WAVE_ID; |
| |
| /* VGPRs */ |
| params[SI_PARAM_VTX0_OFFSET] = ctx->i32; |
| params[SI_PARAM_VTX1_OFFSET] = ctx->i32; |
| params[SI_PARAM_PRIMITIVE_ID] = ctx->i32; |
| params[SI_PARAM_VTX2_OFFSET] = ctx->i32; |
| params[SI_PARAM_VTX3_OFFSET] = ctx->i32; |
| params[SI_PARAM_VTX4_OFFSET] = ctx->i32; |
| params[SI_PARAM_VTX5_OFFSET] = ctx->i32; |
| params[SI_PARAM_GS_INSTANCE_ID] = ctx->i32; |
| num_params = SI_PARAM_GS_INSTANCE_ID+1; |
| break; |
| |
| case PIPE_SHADER_FRAGMENT: |
| params[SI_PARAM_ALPHA_REF] = ctx->f32; |
| params[SI_PARAM_PRIM_MASK] = ctx->i32; |
| last_sgpr = SI_PARAM_PRIM_MASK; |
| params[SI_PARAM_PERSP_SAMPLE] = ctx->v2i32; |
| params[SI_PARAM_PERSP_CENTER] = ctx->v2i32; |
| params[SI_PARAM_PERSP_CENTROID] = ctx->v2i32; |
| params[SI_PARAM_PERSP_PULL_MODEL] = v3i32; |
| params[SI_PARAM_LINEAR_SAMPLE] = ctx->v2i32; |
| params[SI_PARAM_LINEAR_CENTER] = ctx->v2i32; |
| params[SI_PARAM_LINEAR_CENTROID] = ctx->v2i32; |
| params[SI_PARAM_LINE_STIPPLE_TEX] = ctx->f32; |
| params[SI_PARAM_POS_X_FLOAT] = ctx->f32; |
| params[SI_PARAM_POS_Y_FLOAT] = ctx->f32; |
| params[SI_PARAM_POS_Z_FLOAT] = ctx->f32; |
| params[SI_PARAM_POS_W_FLOAT] = ctx->f32; |
| params[SI_PARAM_FRONT_FACE] = ctx->i32; |
| shader->info.face_vgpr_index = 20; |
| params[SI_PARAM_ANCILLARY] = ctx->i32; |
| params[SI_PARAM_SAMPLE_COVERAGE] = ctx->f32; |
| params[SI_PARAM_POS_FIXED_PT] = ctx->i32; |
| num_params = SI_PARAM_POS_FIXED_PT+1; |
| |
| /* Color inputs from the prolog. */ |
| if (shader->selector->info.colors_read) { |
| unsigned num_color_elements = |
| util_bitcount(shader->selector->info.colors_read); |
| |
| assert(num_params + num_color_elements <= ARRAY_SIZE(params)); |
| for (i = 0; i < num_color_elements; i++) |
| params[num_params++] = ctx->f32; |
| |
| num_prolog_vgprs += num_color_elements; |
| } |
| |
| /* Outputs for the epilog. */ |
| num_return_sgprs = SI_SGPR_ALPHA_REF + 1; |
| num_returns = |
| num_return_sgprs + |
| util_bitcount(shader->selector->info.colors_written) * 4 + |
| shader->selector->info.writes_z + |
| shader->selector->info.writes_stencil + |
| shader->selector->info.writes_samplemask + |
| 1 /* SampleMaskIn */; |
| |
| num_returns = MAX2(num_returns, |
| num_return_sgprs + |
| PS_EPILOG_SAMPLEMASK_MIN_LOC + 1); |
| |
| for (i = 0; i < num_return_sgprs; i++) |
| returns[i] = ctx->i32; |
| for (; i < num_returns; i++) |
| returns[i] = ctx->f32; |
| break; |
| |
| case PIPE_SHADER_COMPUTE: |
| params[SI_PARAM_GRID_SIZE] = v3i32; |
| params[SI_PARAM_BLOCK_SIZE] = v3i32; |
| params[SI_PARAM_BLOCK_ID] = v3i32; |
| last_sgpr = SI_PARAM_BLOCK_ID; |
| |
| params[SI_PARAM_THREAD_ID] = v3i32; |
| num_params = SI_PARAM_THREAD_ID + 1; |
| break; |
| default: |
| assert(0 && "unimplemented shader"); |
| return; |
| } |
| |
| assert(num_params <= ARRAY_SIZE(params)); |
| |
| si_create_function(ctx, "main", returns, num_returns, params, |
| num_params, last_sgpr); |
| |
| /* Reserve register locations for VGPR inputs the PS prolog may need. */ |
| if (ctx->type == PIPE_SHADER_FRAGMENT && |
| ctx->separate_prolog) { |
| si_llvm_add_attribute(ctx->main_fn, |
| "InitialPSInputAddr", |
| S_0286D0_PERSP_SAMPLE_ENA(1) | |
| S_0286D0_PERSP_CENTER_ENA(1) | |
| S_0286D0_PERSP_CENTROID_ENA(1) | |
| S_0286D0_LINEAR_SAMPLE_ENA(1) | |
| S_0286D0_LINEAR_CENTER_ENA(1) | |
| S_0286D0_LINEAR_CENTROID_ENA(1) | |
| S_0286D0_FRONT_FACE_ENA(1) | |
| S_0286D0_POS_FIXED_PT_ENA(1)); |
| } else if (ctx->type == PIPE_SHADER_COMPUTE) { |
| si_llvm_add_attribute(ctx->main_fn, |
| "amdgpu-max-work-group-size", |
| si_get_max_workgroup_size(shader)); |
| } |
| |
| shader->info.num_input_sgprs = 0; |
| shader->info.num_input_vgprs = 0; |
| |
| for (i = 0; i <= last_sgpr; ++i) |
| shader->info.num_input_sgprs += llvm_get_type_size(params[i]) / 4; |
| |
| for (; i < num_params; ++i) |
| shader->info.num_input_vgprs += llvm_get_type_size(params[i]) / 4; |
| |
| assert(shader->info.num_input_vgprs >= num_prolog_vgprs); |
| shader->info.num_input_vgprs -= num_prolog_vgprs; |
| |
| if (!ctx->screen->has_ds_bpermute && |
| bld_base->info && |
| (bld_base->info->opcode_count[TGSI_OPCODE_DDX] > 0 || |
| bld_base->info->opcode_count[TGSI_OPCODE_DDY] > 0 || |
| bld_base->info->opcode_count[TGSI_OPCODE_DDX_FINE] > 0 || |
| bld_base->info->opcode_count[TGSI_OPCODE_DDY_FINE] > 0 || |
| bld_base->info->opcode_count[TGSI_OPCODE_INTERP_OFFSET] > 0 || |
| bld_base->info->opcode_count[TGSI_OPCODE_INTERP_SAMPLE] > 0)) |
| ctx->lds = |
| LLVMAddGlobalInAddressSpace(gallivm->module, |
| LLVMArrayType(ctx->i32, 64), |
| "ddxy_lds", |
| LOCAL_ADDR_SPACE); |
| |
| if ((ctx->type == PIPE_SHADER_VERTEX && shader->key.as_ls) || |
| ctx->type == PIPE_SHADER_TESS_CTRL || |
| ctx->type == PIPE_SHADER_TESS_EVAL) |
| declare_tess_lds(ctx); |
| } |
| |
| /** |
| * Load ESGS and GSVS ring buffer resource descriptors and save the variables |
| * for later use. |
| */ |
| static void preload_ring_buffers(struct si_shader_context *ctx) |
| { |
| struct gallivm_state *gallivm = ctx->bld_base.base.gallivm; |
| LLVMBuilderRef builder = gallivm->builder; |
| |
| LLVMValueRef buf_ptr = LLVMGetParam(ctx->main_fn, |
| SI_PARAM_RW_BUFFERS); |
| |
| if ((ctx->type == PIPE_SHADER_VERTEX && |
| ctx->shader->key.as_es) || |
| (ctx->type == PIPE_SHADER_TESS_EVAL && |
| ctx->shader->key.as_es) || |
| ctx->type == PIPE_SHADER_GEOMETRY) { |
| unsigned ring = |
| ctx->type == PIPE_SHADER_GEOMETRY ? SI_GS_RING_ESGS |
| : SI_ES_RING_ESGS; |
| LLVMValueRef offset = lp_build_const_int32(gallivm, ring); |
| |
| ctx->esgs_ring = |
| build_indexed_load_const(ctx, buf_ptr, offset); |
| } |
| |
| if (ctx->shader->is_gs_copy_shader) { |
| LLVMValueRef offset = lp_build_const_int32(gallivm, SI_RING_GSVS); |
| |
| ctx->gsvs_ring[0] = |
| build_indexed_load_const(ctx, buf_ptr, offset); |
| } else if (ctx->type == PIPE_SHADER_GEOMETRY) { |
| const struct si_shader_selector *sel = ctx->shader->selector; |
| struct lp_build_context *uint = &ctx->bld_base.uint_bld; |
| LLVMValueRef offset = lp_build_const_int32(gallivm, SI_RING_GSVS); |
| LLVMValueRef base_ring; |
| |
| base_ring = build_indexed_load_const(ctx, buf_ptr, offset); |
| |
| /* The conceptual layout of the GSVS ring is |
| * v0c0 .. vLv0 v0c1 .. vLc1 .. |
| * but the real memory layout is swizzled across |
| * threads: |
| * t0v0c0 .. t15v0c0 t0v1c0 .. t15v1c0 ... t15vLcL |
| * t16v0c0 .. |
| * Override the buffer descriptor accordingly. |
| */ |
| LLVMTypeRef v2i64 = LLVMVectorType(ctx->i64, 2); |
| uint64_t stream_offset = 0; |
| |
| for (unsigned stream = 0; stream < 4; ++stream) { |
| unsigned num_components; |
| unsigned stride; |
| unsigned num_records; |
| LLVMValueRef ring, tmp; |
| |
| num_components = sel->info.num_stream_output_components[stream]; |
| if (!num_components) |
| continue; |
| |
| stride = 4 * num_components * sel->gs_max_out_vertices; |
| |
| /* Limit on the stride field for <= CIK. */ |
| assert(stride < (1 << 14)); |
| |
| num_records = 64; |
| |
| ring = LLVMBuildBitCast(builder, base_ring, v2i64, ""); |
| tmp = LLVMBuildExtractElement(builder, ring, uint->zero, ""); |
| tmp = LLVMBuildAdd(builder, tmp, |
| LLVMConstInt(ctx->i64, |
| stream_offset, 0), ""); |
| stream_offset += stride * 64; |
| |
| ring = LLVMBuildInsertElement(builder, ring, tmp, uint->zero, ""); |
| ring = LLVMBuildBitCast(builder, ring, ctx->v4i32, ""); |
| tmp = LLVMBuildExtractElement(builder, ring, uint->one, ""); |
| tmp = LLVMBuildOr(builder, tmp, |
| LLVMConstInt(ctx->i32, |
| S_008F04_STRIDE(stride) | |
| S_008F04_SWIZZLE_ENABLE(1), 0), ""); |
| ring = LLVMBuildInsertElement(builder, ring, tmp, uint->one, ""); |
| ring = LLVMBuildInsertElement(builder, ring, |
| LLVMConstInt(ctx->i32, num_records, 0), |
| LLVMConstInt(ctx->i32, 2, 0), ""); |
| ring = LLVMBuildInsertElement(builder, ring, |
| LLVMConstInt(ctx->i32, |
| S_008F0C_DST_SEL_X(V_008F0C_SQ_SEL_X) | |
| S_008F0C_DST_SEL_Y(V_008F0C_SQ_SEL_Y) | |
| S_008F0C_DST_SEL_Z(V_008F0C_SQ_SEL_Z) | |
| S_008F0C_DST_SEL_W(V_008F0C_SQ_SEL_W) | |
| S_008F0C_NUM_FORMAT(V_008F0C_BUF_NUM_FORMAT_FLOAT) | |
| S_008F0C_DATA_FORMAT(V_008F0C_BUF_DATA_FORMAT_32) | |
| S_008F0C_ELEMENT_SIZE(1) | /* element_size = 4 (bytes) */ |
| S_008F0C_INDEX_STRIDE(1) | /* index_stride = 16 (elements) */ |
| S_008F0C_ADD_TID_ENABLE(1), |
| 0), |
| LLVMConstInt(ctx->i32, 3, 0), ""); |
| ring = LLVMBuildBitCast(builder, ring, ctx->v16i8, ""); |
| |
| ctx->gsvs_ring[stream] = ring; |
| } |
| } |
| } |
| |
| static void si_llvm_emit_polygon_stipple(struct si_shader_context *ctx, |
| LLVMValueRef param_rw_buffers, |
| unsigned param_pos_fixed_pt) |
| { |
| struct lp_build_tgsi_context *bld_base = &ctx->bld_base; |
| struct gallivm_state *gallivm = bld_base->base.gallivm; |
| LLVMBuilderRef builder = gallivm->builder; |
| LLVMValueRef slot, desc, offset, row, bit, address[2]; |
| |
| /* Use the fixed-point gl_FragCoord input. |
| * Since the stipple pattern is 32x32 and it repeats, just get 5 bits |
| * per coordinate to get the repeating effect. |
| */ |
| address[0] = unpack_param(ctx, param_pos_fixed_pt, 0, 5); |
| address[1] = unpack_param(ctx, param_pos_fixed_pt, 16, 5); |
| |
| /* Load the buffer descriptor. */ |
| slot = lp_build_const_int32(gallivm, SI_PS_CONST_POLY_STIPPLE); |
| desc = build_indexed_load_const(ctx, param_rw_buffers, slot); |
| |
| /* The stipple pattern is 32x32, each row has 32 bits. */ |
| offset = LLVMBuildMul(builder, address[1], |
| LLVMConstInt(ctx->i32, 4, 0), ""); |
| row = buffer_load_const(ctx, desc, offset); |
| row = LLVMBuildBitCast(builder, row, ctx->i32, ""); |
| bit = LLVMBuildLShr(builder, row, address[0], ""); |
| bit = LLVMBuildTrunc(builder, bit, ctx->i1, ""); |
| |
| /* The intrinsic kills the thread if arg < 0. */ |
| bit = LLVMBuildSelect(builder, bit, LLVMConstReal(ctx->f32, 0), |
| LLVMConstReal(ctx->f32, -1), ""); |
| lp_build_intrinsic(builder, "llvm.AMDGPU.kill", ctx->voidt, &bit, 1, 0); |
| } |
| |
| void si_shader_binary_read_config(struct radeon_shader_binary *binary, |
| struct si_shader_config *conf, |
| unsigned symbol_offset) |
| { |
| unsigned i; |
| const unsigned char *config = |
| radeon_shader_binary_config_start(binary, symbol_offset); |
| bool really_needs_scratch = false; |
| |
| /* LLVM adds SGPR spills to the scratch size. |
| * Find out if we really need the scratch buffer. |
| */ |
| for (i = 0; i < binary->reloc_count; i++) { |
| const struct radeon_shader_reloc *reloc = &binary->relocs[i]; |
| |
| if (!strcmp(scratch_rsrc_dword0_symbol, reloc->name) || |
| !strcmp(scratch_rsrc_dword1_symbol, reloc->name)) { |
| really_needs_scratch = true; |
| break; |
| } |
| } |
| |
| /* XXX: We may be able to emit some of these values directly rather than |
| * extracting fields to be emitted later. |
| */ |
| |
| for (i = 0; i < binary->config_size_per_symbol; i+= 8) { |
| unsigned reg = util_le32_to_cpu(*(uint32_t*)(config + i)); |
| unsigned value = util_le32_to_cpu(*(uint32_t*)(config + i + 4)); |
| switch (reg) { |
| case R_00B028_SPI_SHADER_PGM_RSRC1_PS: |
| case R_00B128_SPI_SHADER_PGM_RSRC1_VS: |
| case R_00B228_SPI_SHADER_PGM_RSRC1_GS: |
| case R_00B848_COMPUTE_PGM_RSRC1: |
| conf->num_sgprs = MAX2(conf->num_sgprs, (G_00B028_SGPRS(value) + 1) * 8); |
| conf->num_vgprs = MAX2(conf->num_vgprs, (G_00B028_VGPRS(value) + 1) * 4); |
| conf->float_mode = G_00B028_FLOAT_MODE(value); |
| conf->rsrc1 = value; |
| break; |
| case R_00B02C_SPI_SHADER_PGM_RSRC2_PS: |
| conf->lds_size = MAX2(conf->lds_size, G_00B02C_EXTRA_LDS_SIZE(value)); |
| break; |
| case R_00B84C_COMPUTE_PGM_RSRC2: |
| conf->lds_size = MAX2(conf->lds_size, G_00B84C_LDS_SIZE(value)); |
| conf->rsrc2 = value; |
| break; |
| case R_0286CC_SPI_PS_INPUT_ENA: |
| conf->spi_ps_input_ena = value; |
| break; |
| case R_0286D0_SPI_PS_INPUT_ADDR: |
| conf->spi_ps_input_addr = value; |
| break; |
| case R_0286E8_SPI_TMPRING_SIZE: |
| case R_00B860_COMPUTE_TMPRING_SIZE: |
| /* WAVESIZE is in units of 256 dwords. */ |
| if (really_needs_scratch) |
| conf->scratch_bytes_per_wave = |
| G_00B860_WAVESIZE(value) * 256 * 4; |
| break; |
| case 0x4: /* SPILLED_SGPRS */ |
| conf->spilled_sgprs = value; |
| break; |
| case 0x8: /* SPILLED_VGPRS */ |
| conf->spilled_vgprs = value; |
| break; |
| default: |
| { |
| static bool printed; |
| |
| if (!printed) { |
| fprintf(stderr, "Warning: LLVM emitted unknown " |
| "config register: 0x%x\n", reg); |
| printed = true; |
| } |
| } |
| break; |
| } |
| } |
| |
| if (!conf->spi_ps_input_addr) |
| conf->spi_ps_input_addr = conf->spi_ps_input_ena; |
| } |
| |
| void si_shader_apply_scratch_relocs(struct si_context *sctx, |
| struct si_shader *shader, |
| struct si_shader_config *config, |
| uint64_t scratch_va) |
| { |
| unsigned i; |
| uint32_t scratch_rsrc_dword0 = scratch_va; |
| uint32_t scratch_rsrc_dword1 = |
| S_008F04_BASE_ADDRESS_HI(scratch_va >> 32); |
| |
| /* Enable scratch coalescing if LLVM sets ELEMENT_SIZE & INDEX_STRIDE |
| * correctly. |
| */ |
| if (HAVE_LLVM >= 0x0309) |
| scratch_rsrc_dword1 |= S_008F04_SWIZZLE_ENABLE(1); |
| else |
| scratch_rsrc_dword1 |= |
| S_008F04_STRIDE(config->scratch_bytes_per_wave / 64); |
| |
| for (i = 0 ; i < shader->binary.reloc_count; i++) { |
| const struct radeon_shader_reloc *reloc = |
| &shader->binary.relocs[i]; |
| if (!strcmp(scratch_rsrc_dword0_symbol, reloc->name)) { |
| util_memcpy_cpu_to_le32(shader->binary.code + reloc->offset, |
| &scratch_rsrc_dword0, 4); |
| } else if (!strcmp(scratch_rsrc_dword1_symbol, reloc->name)) { |
| util_memcpy_cpu_to_le32(shader->binary.code + reloc->offset, |
| &scratch_rsrc_dword1, 4); |
| } |
| } |
| } |
| |
| static unsigned si_get_shader_binary_size(struct si_shader *shader) |
| { |
| unsigned size = shader->binary.code_size; |
| |
| if (shader->prolog) |
| size += shader->prolog->binary.code_size; |
| if (shader->epilog) |
| size += shader->epilog->binary.code_size; |
| return size; |
| } |
| |
| int si_shader_binary_upload(struct si_screen *sscreen, struct si_shader *shader) |
| { |
| const struct radeon_shader_binary *prolog = |
| shader->prolog ? &shader->prolog->binary : NULL; |
| const struct radeon_shader_binary *epilog = |
| shader->epilog ? &shader->epilog->binary : NULL; |
| const struct radeon_shader_binary *mainb = &shader->binary; |
| unsigned bo_size = si_get_shader_binary_size(shader) + |
| (!epilog ? mainb->rodata_size : 0); |
| unsigned char *ptr; |
| |
| assert(!prolog || !prolog->rodata_size); |
| assert((!prolog && !epilog) || !mainb->rodata_size); |
| assert(!epilog || !epilog->rodata_size); |
| |
| r600_resource_reference(&shader->bo, NULL); |
| shader->bo = (struct r600_resource*) |
| pipe_buffer_create(&sscreen->b.b, 0, |
| PIPE_USAGE_IMMUTABLE, bo_size); |
| if (!shader->bo) |
| return -ENOMEM; |
| |
| /* Upload. */ |
| ptr = sscreen->b.ws->buffer_map(shader->bo->buf, NULL, |
| PIPE_TRANSFER_READ_WRITE); |
| |
| if (prolog) { |
| util_memcpy_cpu_to_le32(ptr, prolog->code, prolog->code_size); |
| ptr += prolog->code_size; |
| } |
| |
| util_memcpy_cpu_to_le32(ptr, mainb->code, mainb->code_size); |
| ptr += mainb->code_size; |
| |
| if (epilog) |
| util_memcpy_cpu_to_le32(ptr, epilog->code, epilog->code_size); |
| else if (mainb->rodata_size > 0) |
| util_memcpy_cpu_to_le32(ptr, mainb->rodata, mainb->rodata_size); |
| |
| sscreen->b.ws->buffer_unmap(shader->bo->buf); |
| return 0; |
| } |
| |
| static void si_shader_dump_disassembly(const struct radeon_shader_binary *binary, |
| struct pipe_debug_callback *debug, |
| const char *name, FILE *file) |
| { |
| char *line, *p; |
| unsigned i, count; |
| |
| if (binary->disasm_string) { |
| fprintf(file, "Shader %s disassembly:\n", name); |
| fprintf(file, "%s", binary->disasm_string); |
| |
| if (debug && debug->debug_message) { |
| /* Very long debug messages are cut off, so send the |
| * disassembly one line at a time. This causes more |
| * overhead, but on the plus side it simplifies |
| * parsing of resulting logs. |
| */ |
| pipe_debug_message(debug, SHADER_INFO, |
| "Shader Disassembly Begin"); |
| |
| line = binary->disasm_string; |
| while (*line) { |
| p = util_strchrnul(line, '\n'); |
| count = p - line; |
| |
| if (count) { |
| pipe_debug_message(debug, SHADER_INFO, |
| "%.*s", count, line); |
| } |
| |
| if (!*p) |
| break; |
| line = p + 1; |
| } |
| |
| pipe_debug_message(debug, SHADER_INFO, |
| "Shader Disassembly End"); |
| } |
| } else { |
| fprintf(file, "Shader %s binary:\n", name); |
| for (i = 0; i < binary->code_size; i += 4) { |
| fprintf(file, "@0x%x: %02x%02x%02x%02x\n", i, |
| binary->code[i + 3], binary->code[i + 2], |
| binary->code[i + 1], binary->code[i]); |
| } |
| } |
| } |
| |
| static void si_shader_dump_stats(struct si_screen *sscreen, |
| struct si_shader *shader, |
| struct pipe_debug_callback *debug, |
| unsigned processor, |
| FILE *file, |
| bool check_debug_option) |
| { |
| struct si_shader_config *conf = &shader->config; |
| unsigned num_inputs = shader->selector ? shader->selector->info.num_inputs : 0; |
| unsigned code_size = si_get_shader_binary_size(shader); |
| unsigned lds_increment = sscreen->b.chip_class >= CIK ? 512 : 256; |
| unsigned lds_per_wave = 0; |
| unsigned max_simd_waves = 10; |
| |
| /* Compute LDS usage for PS. */ |
| switch (processor) { |
| case PIPE_SHADER_FRAGMENT: |
| /* The minimum usage per wave is (num_inputs * 48). The maximum |
| * usage is (num_inputs * 48 * 16). |
| * We can get anything in between and it varies between waves. |
| * |
| * The 48 bytes per input for a single primitive is equal to |
| * 4 bytes/component * 4 components/input * 3 points. |
| * |
| * Other stages don't know the size at compile time or don't |
| * allocate LDS per wave, but instead they do it per thread group. |
| */ |
| lds_per_wave = conf->lds_size * lds_increment + |
| align(num_inputs * 48, lds_increment); |
| break; |
| case PIPE_SHADER_COMPUTE: |
| if (shader->selector) { |
| unsigned max_workgroup_size = |
| si_get_max_workgroup_size(shader); |
| lds_per_wave = (conf->lds_size * lds_increment) / |
| DIV_ROUND_UP(max_workgroup_size, 64); |
| } |
| break; |
| } |
| |
| /* Compute the per-SIMD wave counts. */ |
| if (conf->num_sgprs) { |
| if (sscreen->b.chip_class >= VI) |
| max_simd_waves = MIN2(max_simd_waves, 800 / conf->num_sgprs); |
| else |
| max_simd_waves = MIN2(max_simd_waves, 512 / conf->num_sgprs); |
| } |
| |
| if (conf->num_vgprs) |
| max_simd_waves = MIN2(max_simd_waves, 256 / conf->num_vgprs); |
| |
| /* LDS is 64KB per CU (4 SIMDs), which is 16KB per SIMD (usage above |
| * 16KB makes some SIMDs unoccupied). */ |
| if (lds_per_wave) |
| max_simd_waves = MIN2(max_simd_waves, 16384 / lds_per_wave); |
| |
| if (!check_debug_option || |
| r600_can_dump_shader(&sscreen->b, processor)) { |
| if (processor == PIPE_SHADER_FRAGMENT) { |
| fprintf(file, "*** SHADER CONFIG ***\n" |
| "SPI_PS_INPUT_ADDR = 0x%04x\n" |
| "SPI_PS_INPUT_ENA = 0x%04x\n", |
| conf->spi_ps_input_addr, conf->spi_ps_input_ena); |
| } |
| |
| fprintf(file, "*** SHADER STATS ***\n" |
| "SGPRS: %d\n" |
| "VGPRS: %d\n" |
| "Spilled SGPRs: %d\n" |
| "Spilled VGPRs: %d\n" |
| "Private memory VGPRs: %d\n" |
| "Code Size: %d bytes\n" |
| "LDS: %d blocks\n" |
| "Scratch: %d bytes per wave\n" |
| "Max Waves: %d\n" |
| "********************\n\n\n", |
| conf->num_sgprs, conf->num_vgprs, |
| conf->spilled_sgprs, conf->spilled_vgprs, |
| conf->private_mem_vgprs, code_size, |
| conf->lds_size, conf->scratch_bytes_per_wave, |
| max_simd_waves); |
| } |
| |
| pipe_debug_message(debug, SHADER_INFO, |
| "Shader Stats: SGPRS: %d VGPRS: %d Code Size: %d " |
| "LDS: %d Scratch: %d Max Waves: %d Spilled SGPRs: %d " |
| "Spilled VGPRs: %d PrivMem VGPRs: %d", |
| conf->num_sgprs, conf->num_vgprs, code_size, |
| conf->lds_size, conf->scratch_bytes_per_wave, |
| max_simd_waves, conf->spilled_sgprs, |
| conf->spilled_vgprs, conf->private_mem_vgprs); |
| } |
| |
| static const char *si_get_shader_name(struct si_shader *shader, |
| unsigned processor) |
| { |
| switch (processor) { |
| case PIPE_SHADER_VERTEX: |
| if (shader->key.as_es) |
| return "Vertex Shader as ES"; |
| else if (shader->key.as_ls) |
| return "Vertex Shader as LS"; |
| else |
| return "Vertex Shader as VS"; |
| case PIPE_SHADER_TESS_CTRL: |
| return "Tessellation Control Shader"; |
| case PIPE_SHADER_TESS_EVAL: |
| if (shader->key.as_es) |
| return "Tessellation Evaluation Shader as ES"; |
| else |
| return "Tessellation Evaluation Shader as VS"; |
| case PIPE_SHADER_GEOMETRY: |
| if (shader->is_gs_copy_shader) |
| return "GS Copy Shader as VS"; |
| else |
| return "Geometry Shader"; |
| case PIPE_SHADER_FRAGMENT: |
| return "Pixel Shader"; |
| case PIPE_SHADER_COMPUTE: |
| return "Compute Shader"; |
| default: |
| return "Unknown Shader"; |
| } |
| } |
| |
| void si_shader_dump(struct si_screen *sscreen, struct si_shader *shader, |
| struct pipe_debug_callback *debug, unsigned processor, |
| FILE *file, bool check_debug_option) |
| { |
| if (!check_debug_option || |
| r600_can_dump_shader(&sscreen->b, processor)) |
| si_dump_shader_key(processor, &shader->key, file); |
| |
| if (!check_debug_option && shader->binary.llvm_ir_string) { |
| fprintf(file, "\n%s - main shader part - LLVM IR:\n\n", |
| si_get_shader_name(shader, processor)); |
| fprintf(file, "%s\n", shader->binary.llvm_ir_string); |
| } |
| |
| if (!check_debug_option || |
| (r600_can_dump_shader(&sscreen->b, processor) && |
| !(sscreen->b.debug_flags & DBG_NO_ASM))) { |
| fprintf(file, "\n%s:\n", si_get_shader_name(shader, processor)); |
| |
| if (shader->prolog) |
| si_shader_dump_disassembly(&shader->prolog->binary, |
| debug, "prolog", file); |
| |
| si_shader_dump_disassembly(&shader->binary, debug, "main", file); |
| |
| if (shader->epilog) |
| si_shader_dump_disassembly(&shader->epilog->binary, |
| debug, "epilog", file); |
| fprintf(file, "\n"); |
| } |
| |
| si_shader_dump_stats(sscreen, shader, debug, processor, file, |
| check_debug_option); |
| } |
| |
| int si_compile_llvm(struct si_screen *sscreen, |
| struct radeon_shader_binary *binary, |
| struct si_shader_config *conf, |
| LLVMTargetMachineRef tm, |
| LLVMModuleRef mod, |
| struct pipe_debug_callback *debug, |
| unsigned processor, |
| const char *name) |
| { |
| int r = 0; |
| unsigned count = p_atomic_inc_return(&sscreen->b.num_compilations); |
| |
| if (r600_can_dump_shader(&sscreen->b, processor)) { |
| fprintf(stderr, "radeonsi: Compiling shader %d\n", count); |
| |
| if (!(sscreen->b.debug_flags & (DBG_NO_IR | DBG_PREOPT_IR))) { |
| fprintf(stderr, "%s LLVM IR:\n\n", name); |
| LLVMDumpModule(mod); |
| fprintf(stderr, "\n"); |
| } |
| } |
| |
| if (sscreen->record_llvm_ir) { |
| char *ir = LLVMPrintModuleToString(mod); |
| binary->llvm_ir_string = strdup(ir); |
| LLVMDisposeMessage(ir); |
| } |
| |
| if (!si_replace_shader(count, binary)) { |
| r = si_llvm_compile(mod, binary, tm, debug); |
| if (r) |
| return r; |
| } |
| |
| si_shader_binary_read_config(binary, conf, 0); |
| |
| /* Enable 64-bit and 16-bit denormals, because there is no performance |
| * cost. |
| * |
| * If denormals are enabled, all floating-point output modifiers are |
| * ignored. |
| * |
| * Don't enable denormals for 32-bit floats, because: |
| * - Floating-point output modifiers would be ignored by the hw. |
| * - Some opcodes don't support denormals, such as v_mad_f32. We would |
| * have to stop using those. |
| * - SI & CI would be very slow. |
| */ |
| conf->float_mode |= V_00B028_FP_64_DENORMS; |
| |
| FREE(binary->config); |
| FREE(binary->global_symbol_offsets); |
| binary->config = NULL; |
| binary->global_symbol_offsets = NULL; |
| |
| /* Some shaders can't have rodata because their binaries can be |
| * concatenated. |
| */ |
| if (binary->rodata_size && |
| (processor == PIPE_SHADER_VERTEX || |
| processor == PIPE_SHADER_TESS_CTRL || |
| processor == PIPE_SHADER_TESS_EVAL || |
| processor == PIPE_SHADER_FRAGMENT)) { |
| fprintf(stderr, "radeonsi: The shader can't have rodata."); |
| return -EINVAL; |
| } |
| |
| return r; |
| } |
| |
| static void si_llvm_build_ret(struct si_shader_context *ctx, LLVMValueRef ret) |
| { |
| if (LLVMGetTypeKind(LLVMTypeOf(ret)) == LLVMVoidTypeKind) |
| LLVMBuildRetVoid(ctx->gallivm.builder); |
| else |
| LLVMBuildRet(ctx->gallivm.builder, ret); |
| } |
| |
| /* Generate code for the hardware VS shader stage to go with a geometry shader */ |
| struct si_shader * |
| si_generate_gs_copy_shader(struct si_screen *sscreen, |
| LLVMTargetMachineRef tm, |
| struct si_shader_selector *gs_selector, |
| struct pipe_debug_callback *debug) |
| { |
| struct si_shader_context ctx; |
| struct si_shader *shader; |
| struct gallivm_state *gallivm = &ctx.gallivm; |
| LLVMBuilderRef builder; |
| struct lp_build_tgsi_context *bld_base = &ctx.bld_base; |
| struct lp_build_context *uint = &bld_base->uint_bld; |
| struct si_shader_output_values *outputs; |
| struct tgsi_shader_info *gsinfo = &gs_selector->info; |
| LLVMValueRef args[9]; |
| int i, r; |
| |
| outputs = MALLOC(gsinfo->num_outputs * sizeof(outputs[0])); |
| |
| if (!outputs) |
| return NULL; |
| |
| shader = CALLOC_STRUCT(si_shader); |
| if (!shader) { |
| FREE(outputs); |
| return NULL; |
| } |
| |
| |
| shader->selector = gs_selector; |
| shader->is_gs_copy_shader = true; |
| |
| si_init_shader_ctx(&ctx, sscreen, shader, tm); |
| ctx.type = PIPE_SHADER_VERTEX; |
| |
| builder = gallivm->builder; |
| |
| create_meta_data(&ctx); |
| create_function(&ctx); |
| preload_ring_buffers(&ctx); |
| |
| args[0] = ctx.gsvs_ring[0]; |
| args[1] = lp_build_mul_imm(uint, |
| LLVMGetParam(ctx.main_fn, |
| ctx.param_vertex_id), |
| 4); |
| args[3] = uint->zero; |
| args[4] = uint->one; /* OFFEN */ |
| args[5] = uint->zero; /* IDXEN */ |
| args[6] = uint->one; /* GLC */ |
| args[7] = uint->one; /* SLC */ |
| args[8] = uint->zero; /* TFE */ |
| |
| /* Fetch the vertex stream ID.*/ |
| LLVMValueRef stream_id; |
| |
| if (gs_selector->so.num_outputs) |
| stream_id = unpack_param(&ctx, ctx.param_streamout_config, 24, 2); |
| else |
| stream_id = uint->zero; |
| |
| /* Fill in output information. */ |
| for (i = 0; i < gsinfo->num_outputs; ++i) { |
| outputs[i].semantic_name = gsinfo->output_semantic_name[i]; |
| outputs[i].semantic_index = gsinfo->output_semantic_index[i]; |
| |
| for (int chan = 0; chan < 4; chan++) { |
| outputs[i].vertex_stream[chan] = |
| (gsinfo->output_streams[i] >> (2 * chan)) & 3; |
| } |
| } |
| |
| LLVMBasicBlockRef end_bb; |
| LLVMValueRef switch_inst; |
| |
| end_bb = LLVMAppendBasicBlockInContext(gallivm->context, ctx.main_fn, "end"); |
| switch_inst = LLVMBuildSwitch(builder, stream_id, end_bb, 4); |
| |
| for (int stream = 0; stream < 4; stream++) { |
| LLVMBasicBlockRef bb; |
| unsigned offset; |
| |
| if (!gsinfo->num_stream_output_components[stream]) |
| continue; |
| |
| if (stream > 0 && !gs_selector->so.num_outputs) |
| continue; |
| |
| bb = LLVMInsertBasicBlockInContext(gallivm->context, end_bb, "out"); |
| LLVMAddCase(switch_inst, lp_build_const_int32(gallivm, stream), bb); |
| LLVMPositionBuilderAtEnd(builder, bb); |
| |
| /* Fetch vertex data from GSVS ring */ |
| offset = 0; |
| for (i = 0; i < gsinfo->num_outputs; ++i) { |
| for (unsigned chan = 0; chan < 4; chan++) { |
| if (!(gsinfo->output_usagemask[i] & (1 << chan)) || |
| outputs[i].vertex_stream[chan] != stream) { |
| outputs[i].values[chan] = ctx.bld_base.base.undef; |
| continue; |
| } |
| |
| args[2] = lp_build_const_int32( |
| gallivm, |
| offset * gs_selector->gs_max_out_vertices * 16 * 4); |
| offset++; |
| |
| outputs[i].values[chan] = |
| LLVMBuildBitCast(gallivm->builder, |
| lp_build_intrinsic(gallivm->builder, |
| "llvm.SI.buffer.load.dword.i32.i32", |
| ctx.i32, args, 9, |
| LP_FUNC_ATTR_READONLY), |
| ctx.f32, ""); |
| } |
| } |
| |
| /* Streamout and exports. */ |
| if (gs_selector->so.num_outputs) { |
| si_llvm_emit_streamout(&ctx, outputs, |
| gsinfo->num_outputs, |
| stream); |
| } |
| |
| if (stream == 0) |
| si_llvm_export_vs(bld_base, outputs, gsinfo->num_outputs); |
| |
| LLVMBuildBr(builder, end_bb); |
| } |
| |
| LLVMPositionBuilderAtEnd(builder, end_bb); |
| |
| LLVMBuildRetVoid(gallivm->builder); |
| |
| /* Dump LLVM IR before any optimization passes */ |
| if (sscreen->b.debug_flags & DBG_PREOPT_IR && |
| r600_can_dump_shader(&sscreen->b, PIPE_SHADER_GEOMETRY)) |
| LLVMDumpModule(bld_base->base.gallivm->module); |
| |
| si_llvm_finalize_module(&ctx, |
| r600_extra_shader_checks(&sscreen->b, PIPE_SHADER_GEOMETRY)); |
| |
| r = si_compile_llvm(sscreen, &ctx.shader->binary, |
| &ctx.shader->config, ctx.tm, |
| bld_base->base.gallivm->module, |
| debug, PIPE_SHADER_GEOMETRY, |
| "GS Copy Shader"); |
| if (!r) { |
| if (r600_can_dump_shader(&sscreen->b, PIPE_SHADER_GEOMETRY)) |
| fprintf(stderr, "GS Copy Shader:\n"); |
| si_shader_dump(sscreen, ctx.shader, debug, |
| PIPE_SHADER_GEOMETRY, stderr, true); |
| r = si_shader_binary_upload(sscreen, ctx.shader); |
| } |
| |
| si_llvm_dispose(&ctx); |
| |
| FREE(outputs); |
| |
| if (r != 0) { |
| FREE(shader); |
| shader = NULL; |
| } |
| return shader; |
| } |
| |
| static void si_dump_shader_key(unsigned shader, struct si_shader_key *key, |
| FILE *f) |
| { |
| int i; |
| |
| fprintf(f, "SHADER KEY\n"); |
| |
| switch (shader) { |
| case PIPE_SHADER_VERTEX: |
| fprintf(f, " part.vs.prolog.instance_divisors = {"); |
| for (i = 0; i < ARRAY_SIZE(key->part.vs.prolog.instance_divisors); i++) |
| fprintf(f, !i ? "%u" : ", %u", |
| key->part.vs.prolog.instance_divisors[i]); |
| fprintf(f, "}\n"); |
| fprintf(f, " part.vs.epilog.export_prim_id = %u\n", key->part.vs.epilog.export_prim_id); |
| fprintf(f, " as_es = %u\n", key->as_es); |
| fprintf(f, " as_ls = %u\n", key->as_ls); |
| fprintf(f, " mono.vs.fix_fetch = 0x%"PRIx64"\n", key->mono.vs.fix_fetch); |
| break; |
| |
| case PIPE_SHADER_TESS_CTRL: |
| fprintf(f, " part.tcs.epilog.prim_mode = %u\n", key->part.tcs.epilog.prim_mode); |
| fprintf(f, " mono.tcs.inputs_to_copy = 0x%"PRIx64"\n", key->mono.tcs.inputs_to_copy); |
| break; |
| |
| case PIPE_SHADER_TESS_EVAL: |
| fprintf(f, " part.tes.epilog.export_prim_id = %u\n", key->part.tes.epilog.export_prim_id); |
| fprintf(f, " as_es = %u\n", key->as_es); |
| break; |
| |
| case PIPE_SHADER_GEOMETRY: |
| fprintf(f, " part.gs.prolog.tri_strip_adj_fix = %u\n", key->part.gs.prolog.tri_strip_adj_fix); |
| break; |
| |
| case PIPE_SHADER_COMPUTE: |
| break; |
| |
| case PIPE_SHADER_FRAGMENT: |
| fprintf(f, " part.ps.prolog.color_two_side = %u\n", key->part.ps.prolog.color_two_side); |
| fprintf(f, " part.ps.prolog.flatshade_colors = %u\n", key->part.ps.prolog.flatshade_colors); |
| fprintf(f, " part.ps.prolog.poly_stipple = %u\n", key->part.ps.prolog.poly_stipple); |
| fprintf(f, " part.ps.prolog.force_persp_sample_interp = %u\n", key->part.ps.prolog.force_persp_sample_interp); |
| fprintf(f, " part.ps.prolog.force_linear_sample_interp = %u\n", key->part.ps.prolog.force_linear_sample_interp); |
| fprintf(f, " part.ps.prolog.force_persp_center_interp = %u\n", key->part.ps.prolog.force_persp_center_interp); |
| fprintf(f, " part.ps.prolog.force_linear_center_interp = %u\n", key->part.ps.prolog.force_linear_center_interp); |
| fprintf(f, " part.ps.prolog.bc_optimize_for_persp = %u\n", key->part.ps.prolog.bc_optimize_for_persp); |
| fprintf(f, " part.ps.prolog.bc_optimize_for_linear = %u\n", key->part.ps.prolog.bc_optimize_for_linear); |
| fprintf(f, " part.ps.epilog.spi_shader_col_format = 0x%x\n", key->part.ps.epilog.spi_shader_col_format); |
| fprintf(f, " part.ps.epilog.color_is_int8 = 0x%X\n", key->part.ps.epilog.color_is_int8); |
| fprintf(f, " part.ps.epilog.last_cbuf = %u\n", key->part.ps.epilog.last_cbuf); |
| fprintf(f, " part.ps.epilog.alpha_func = %u\n", key->part.ps.epilog.alpha_func); |
| fprintf(f, " part.ps.epilog.alpha_to_one = %u\n", key->part.ps.epilog.alpha_to_one); |
| fprintf(f, " part.ps.epilog.poly_line_smoothing = %u\n", key->part.ps.epilog.poly_line_smoothing); |
| fprintf(f, " part.ps.epilog.clamp_color = %u\n", key->part.ps.epilog.clamp_color); |
| break; |
| |
| default: |
| assert(0); |
| } |
| |
| if ((shader == PIPE_SHADER_GEOMETRY || |
| shader == PIPE_SHADER_TESS_EVAL || |
| shader == PIPE_SHADER_VERTEX) && |
| !key->as_es && !key->as_ls) { |
| fprintf(f, " opt.hw_vs.kill_outputs = 0x%"PRIx64"\n", key->opt.hw_vs.kill_outputs); |
| fprintf(f, " opt.hw_vs.kill_outputs2 = 0x%x\n", key->opt.hw_vs.kill_outputs2); |
| fprintf(f, " opt.hw_vs.clip_disable = %u\n", key->opt.hw_vs.clip_disable); |
| } |
| } |
| |
| static void si_init_shader_ctx(struct si_shader_context *ctx, |
| struct si_screen *sscreen, |
| struct si_shader *shader, |
| LLVMTargetMachineRef tm) |
| { |
| struct lp_build_tgsi_context *bld_base; |
| struct lp_build_tgsi_action tmpl = {}; |
| |
| si_llvm_context_init(ctx, sscreen, shader, tm, |
| (shader && shader->selector) ? &shader->selector->info : NULL, |
| (shader && shader->selector) ? shader->selector->tokens : NULL); |
| |
| bld_base = &ctx->bld_base; |
| bld_base->emit_fetch_funcs[TGSI_FILE_CONSTANT] = fetch_constant; |
| |
| bld_base->op_actions[TGSI_OPCODE_INTERP_CENTROID] = interp_action; |
| bld_base->op_actions[TGSI_OPCODE_INTERP_SAMPLE] = interp_action; |
| bld_base->op_actions[TGSI_OPCODE_INTERP_OFFSET] = interp_action; |
| |
| bld_base->op_actions[TGSI_OPCODE_TEX] = tex_action; |
| bld_base->op_actions[TGSI_OPCODE_TEX2] = tex_action; |
| bld_base->op_actions[TGSI_OPCODE_TXB] = tex_action; |
| bld_base->op_actions[TGSI_OPCODE_TXB2] = tex_action; |
| bld_base->op_actions[TGSI_OPCODE_TXD] = tex_action; |
| bld_base->op_actions[TGSI_OPCODE_TXF] = tex_action; |
| bld_base->op_actions[TGSI_OPCODE_TXL] = tex_action; |
| bld_base->op_actions[TGSI_OPCODE_TXL2] = tex_action; |
| bld_base->op_actions[TGSI_OPCODE_TXP] = tex_action; |
| bld_base->op_actions[TGSI_OPCODE_TXQ].fetch_args = txq_fetch_args; |
| bld_base->op_actions[TGSI_OPCODE_TXQ].emit = txq_emit; |
| bld_base->op_actions[TGSI_OPCODE_TG4] = tex_action; |
| bld_base->op_actions[TGSI_OPCODE_LODQ] = tex_action; |
| bld_base->op_actions[TGSI_OPCODE_TXQS].emit = si_llvm_emit_txqs; |
| |
| bld_base->op_actions[TGSI_OPCODE_LOAD].fetch_args = load_fetch_args; |
| bld_base->op_actions[TGSI_OPCODE_LOAD].emit = load_emit; |
| bld_base->op_actions[TGSI_OPCODE_STORE].fetch_args = store_fetch_args; |
| bld_base->op_actions[TGSI_OPCODE_STORE].emit = store_emit; |
| bld_base->op_actions[TGSI_OPCODE_RESQ].fetch_args = resq_fetch_args; |
| bld_base->op_actions[TGSI_OPCODE_RESQ].emit = resq_emit; |
| |
| tmpl.fetch_args = atomic_fetch_args; |
| tmpl.emit = atomic_emit; |
| bld_base->op_actions[TGSI_OPCODE_ATOMUADD] = tmpl; |
| bld_base->op_actions[TGSI_OPCODE_ATOMUADD].intr_name = "add"; |
| bld_base->op_actions[TGSI_OPCODE_ATOMXCHG] = tmpl; |
| bld_base->op_actions[TGSI_OPCODE_ATOMXCHG].intr_name = "swap"; |
| bld_base->op_actions[TGSI_OPCODE_ATOMCAS] = tmpl; |
| bld_base->op_actions[TGSI_OPCODE_ATOMCAS].intr_name = "cmpswap"; |
| bld_base->op_actions[TGSI_OPCODE_ATOMAND] = tmpl; |
| bld_base->op_actions[TGSI_OPCODE_ATOMAND].intr_name = "and"; |
| bld_base->op_actions[TGSI_OPCODE_ATOMOR] = tmpl; |
| bld_base->op_actions[TGSI_OPCODE_ATOMOR].intr_name = "or"; |
| bld_base->op_actions[TGSI_OPCODE_ATOMXOR] = tmpl; |
| bld_base->op_actions[TGSI_OPCODE_ATOMXOR].intr_name = "xor"; |
| bld_base->op_actions[TGSI_OPCODE_ATOMUMIN] = tmpl; |
| bld_base->op_actions[TGSI_OPCODE_ATOMUMIN].intr_name = "umin"; |
| bld_base->op_actions[TGSI_OPCODE_ATOMUMAX] = tmpl; |
| bld_base->op_actions[TGSI_OPCODE_ATOMUMAX].intr_name = "umax"; |
| bld_base->op_actions[TGSI_OPCODE_ATOMIMIN] = tmpl; |
| bld_base->op_actions[TGSI_OPCODE_ATOMIMIN].intr_name = "smin"; |
| bld_base->op_actions[TGSI_OPCODE_ATOMIMAX] = tmpl; |
| bld_base->op_actions[TGSI_OPCODE_ATOMIMAX].intr_name = "smax"; |
| |
| bld_base->op_actions[TGSI_OPCODE_MEMBAR].emit = membar_emit; |
| |
| bld_base->op_actions[TGSI_OPCODE_DDX].emit = si_llvm_emit_ddxy; |
| bld_base->op_actions[TGSI_OPCODE_DDY].emit = si_llvm_emit_ddxy; |
| bld_base->op_actions[TGSI_OPCODE_DDX_FINE].emit = si_llvm_emit_ddxy; |
| bld_base->op_actions[TGSI_OPCODE_DDY_FINE].emit = si_llvm_emit_ddxy; |
| |
| bld_base->op_actions[TGSI_OPCODE_EMIT].emit = si_llvm_emit_vertex; |
| bld_base->op_actions[TGSI_OPCODE_ENDPRIM].emit = si_llvm_emit_primitive; |
| bld_base->op_actions[TGSI_OPCODE_BARRIER].emit = si_llvm_emit_barrier; |
| } |
| |
| /* Return true if the PARAM export has been eliminated. */ |
| static bool si_eliminate_const_output(struct si_shader_context *ctx, |
| LLVMValueRef inst, unsigned offset) |
| { |
| struct si_shader *shader = ctx->shader; |
| unsigned num_outputs = shader->selector->info.num_outputs; |
| unsigned i, default_val; /* SPI_PS_INPUT_CNTL_i.DEFAULT_VAL */ |
| bool is_zero[4] = {}, is_one[4] = {}; |
| |
| for (i = 0; i < 4; i++) { |
| LLVMBool loses_info; |
| LLVMValueRef p = LLVMGetOperand(inst, 5 + i); |
| |
| /* It's a constant expression. Undef outputs are eliminated too. */ |
| if (LLVMIsUndef(p)) { |
| is_zero[i] = true; |
| is_one[i] = true; |
| } else if (LLVMIsAConstantFP(p)) { |
| double a = LLVMConstRealGetDouble(p, &loses_info); |
| |
| if (a == 0) |
| is_zero[i] = true; |
| else if (a == 1) |
| is_one[i] = true; |
| else |
| return false; /* other constant */ |
| } else |
| return false; |
| } |
| |
| /* Only certain combinations of 0 and 1 can be eliminated. */ |
| if (is_zero[0] && is_zero[1] && is_zero[2]) |
| default_val = is_zero[3] ? 0 : 1; |
| else if (is_one[0] && is_one[1] && is_one[2]) |
| default_val = is_zero[3] ? 2 : 3; |
| else |
| return false; |
| |
| /* The PARAM export can be represented as DEFAULT_VAL. Kill it. */ |
| LLVMInstructionEraseFromParent(inst); |
| |
| /* Change OFFSET to DEFAULT_VAL. */ |
| for (i = 0; i < num_outputs; i++) { |
| if (shader->info.vs_output_param_offset[i] == offset) { |
| shader->info.vs_output_param_offset[i] = |
| EXP_PARAM_DEFAULT_VAL_0000 + default_val; |
| break; |
| } |
| } |
| return true; |
| } |
| |
| struct si_vs_exports { |
| unsigned num; |
| unsigned offset[SI_MAX_VS_OUTPUTS]; |
| LLVMValueRef inst[SI_MAX_VS_OUTPUTS]; |
| }; |
| |
| static void si_eliminate_const_vs_outputs(struct si_shader_context *ctx) |
| { |
| struct si_shader *shader = ctx->shader; |
| struct tgsi_shader_info *info = &shader->selector->info; |
| LLVMBasicBlockRef bb; |
| struct si_vs_exports exports; |
| bool removed_any = false; |
| |
| exports.num = 0; |
| |
| if (ctx->type == PIPE_SHADER_FRAGMENT || |
| ctx->type == PIPE_SHADER_COMPUTE || |
| shader->key.as_es || |
| shader->key.as_ls) |
| return; |
| |
| /* Process all LLVM instructions. */ |
| bb = LLVMGetFirstBasicBlock(ctx->main_fn); |
| while (bb) { |
| LLVMValueRef inst = LLVMGetFirstInstruction(bb); |
| |
| while (inst) { |
| LLVMValueRef cur = inst; |
| inst = LLVMGetNextInstruction(inst); |
| |
| if (LLVMGetInstructionOpcode(cur) != LLVMCall) |
| continue; |
| |
| LLVMValueRef callee = lp_get_called_value(cur); |
| |
| if (!lp_is_function(callee)) |
| continue; |
| |
| const char *name = LLVMGetValueName(callee); |
| unsigned num_args = LLVMCountParams(callee); |
| |
| /* Check if this is an export instruction. */ |
| if (num_args != 9 || strcmp(name, "llvm.SI.export")) |
| continue; |
| |
| LLVMValueRef arg = LLVMGetOperand(cur, 3); |
| unsigned target = LLVMConstIntGetZExtValue(arg); |
| |
| if (target < V_008DFC_SQ_EXP_PARAM) |
| continue; |
| |
| target -= V_008DFC_SQ_EXP_PARAM; |
| |
| /* Eliminate constant value PARAM exports. */ |
| if (si_eliminate_const_output(ctx, cur, target)) { |
| removed_any = true; |
| } else { |
| exports.offset[exports.num] = target; |
| exports.inst[exports.num] = cur; |
| exports.num++; |
| } |
| } |
| bb = LLVMGetNextBasicBlock(bb); |
| } |
| |
| /* Remove holes in export memory due to removed PARAM exports. |
| * This is done by renumbering all PARAM exports. |
| */ |
| if (removed_any) { |
| ubyte current_offset[SI_MAX_VS_OUTPUTS]; |
| unsigned new_count = 0; |
| unsigned out, i; |
| |
| /* Make a copy of the offsets. We need the old version while |
| * we are modifying some of them. */ |
| assert(sizeof(current_offset) == |
| sizeof(shader->info.vs_output_param_offset)); |
| memcpy(current_offset, shader->info.vs_output_param_offset, |
| sizeof(current_offset)); |
| |
| for (i = 0; i < exports.num; i++) { |
| unsigned offset = exports.offset[i]; |
| |
| for (out = 0; out < info->num_outputs; out++) { |
| if (current_offset[out] != offset) |
| continue; |
| |
| LLVMSetOperand(exports.inst[i], 3, |
| LLVMConstInt(ctx->i32, |
| V_008DFC_SQ_EXP_PARAM + new_count, 0)); |
| shader->info.vs_output_param_offset[out] = new_count; |
| new_count++; |
| break; |
| } |
| } |
| shader->info.nr_param_exports = new_count; |
| } |
| } |
| |
| static void si_count_scratch_private_memory(struct si_shader_context *ctx) |
| { |
| ctx->shader->config.private_mem_vgprs = 0; |
| |
| /* Process all LLVM instructions. */ |
| LLVMBasicBlockRef bb = LLVMGetFirstBasicBlock(ctx->main_fn); |
| while (bb) { |
| LLVMValueRef next = LLVMGetFirstInstruction(bb); |
| |
| while (next) { |
| LLVMValueRef inst = next; |
| next = LLVMGetNextInstruction(next); |
| |
| if (LLVMGetInstructionOpcode(inst) != LLVMAlloca) |
| continue; |
| |
| LLVMTypeRef type = LLVMGetElementType(LLVMTypeOf(inst)); |
| /* No idea why LLVM aligns allocas to 4 elements. */ |
| unsigned alignment = LLVMGetAlignment(inst); |
| unsigned dw_size = align(llvm_get_type_size(type) / 4, alignment); |
| ctx->shader->config.private_mem_vgprs += dw_size; |
| } |
| bb = LLVMGetNextBasicBlock(bb); |
| } |
| } |
| |
| static bool si_compile_tgsi_main(struct si_shader_context *ctx, |
| struct si_shader *shader) |
| { |
| struct si_shader_selector *sel = shader->selector; |
| struct lp_build_tgsi_context *bld_base = &ctx->bld_base; |
| |
| switch (ctx->type) { |
| case PIPE_SHADER_VERTEX: |
| ctx->load_input = declare_input_vs; |
| if (shader->key.as_ls) |
| bld_base->emit_epilogue = si_llvm_emit_ls_epilogue; |
| else if (shader->key.as_es) |
| bld_base->emit_epilogue = si_llvm_emit_es_epilogue; |
| else |
| bld_base->emit_epilogue = si_llvm_emit_vs_epilogue; |
| break; |
| case PIPE_SHADER_TESS_CTRL: |
| bld_base->emit_fetch_funcs[TGSI_FILE_INPUT] = fetch_input_tcs; |
| bld_base->emit_fetch_funcs[TGSI_FILE_OUTPUT] = fetch_output_tcs; |
| bld_base->emit_store = store_output_tcs; |
| bld_base->emit_epilogue = si_llvm_emit_tcs_epilogue; |
| break; |
| case PIPE_SHADER_TESS_EVAL: |
| bld_base->emit_fetch_funcs[TGSI_FILE_INPUT] = fetch_input_tes; |
| if (shader->key.as_es) |
| bld_base->emit_epilogue = si_llvm_emit_es_epilogue; |
| else |
| bld_base->emit_epilogue = si_llvm_emit_vs_epilogue; |
| break; |
| case PIPE_SHADER_GEOMETRY: |
| bld_base->emit_fetch_funcs[TGSI_FILE_INPUT] = fetch_input_gs; |
| bld_base->emit_epilogue = si_llvm_emit_gs_epilogue; |
| break; |
| case PIPE_SHADER_FRAGMENT: |
| ctx->load_input = declare_input_fs; |
| bld_base->emit_epilogue = si_llvm_return_fs_outputs; |
| break; |
| case PIPE_SHADER_COMPUTE: |
| ctx->declare_memory_region = declare_compute_memory; |
| break; |
| default: |
| assert(!"Unsupported shader type"); |
| return false; |
| } |
| |
| create_meta_data(ctx); |
| create_function(ctx); |
| preload_ring_buffers(ctx); |
| |
| if (ctx->type == PIPE_SHADER_GEOMETRY) { |
| int i; |
| for (i = 0; i < 4; i++) { |
| ctx->gs_next_vertex[i] = |
| lp_build_alloca(bld_base->base.gallivm, |
| ctx->i32, ""); |
| } |
| } |
| |
| if (!lp_build_tgsi_llvm(bld_base, sel->tokens)) { |
| fprintf(stderr, "Failed to translate shader from TGSI to LLVM\n"); |
| return false; |
| } |
| |
| si_llvm_build_ret(ctx, ctx->return_value); |
| return true; |
| } |
| |
| /** |
| * Compute the VS prolog key, which contains all the information needed to |
| * build the VS prolog function, and set shader->info bits where needed. |
| */ |
| static void si_get_vs_prolog_key(struct si_shader *shader, |
| union si_shader_part_key *key) |
| { |
| struct tgsi_shader_info *info = &shader->selector->info; |
| |
| memset(key, 0, sizeof(*key)); |
| key->vs_prolog.states = shader->key.part.vs.prolog; |
| key->vs_prolog.num_input_sgprs = shader->info.num_input_sgprs; |
| key->vs_prolog.last_input = MAX2(1, info->num_inputs) - 1; |
| |
| /* Set the instanceID flag. */ |
| for (unsigned i = 0; i < info->num_inputs; i++) |
| if (key->vs_prolog.states.instance_divisors[i]) |
| shader->info.uses_instanceid = true; |
| } |
| |
| /** |
| * Compute the VS epilog key, which contains all the information needed to |
| * build the VS epilog function, and set the PrimitiveID output offset. |
| */ |
| static void si_get_vs_epilog_key(struct si_shader *shader, |
| struct si_vs_epilog_bits *states, |
| union si_shader_part_key *key) |
| { |
| memset(key, 0, sizeof(*key)); |
| key->vs_epilog.states = *states; |
| |
| /* Set up the PrimitiveID output. */ |
| if (shader->key.part.vs.epilog.export_prim_id) { |
| unsigned index = shader->selector->info.num_outputs; |
| unsigned offset = shader->info.nr_param_exports++; |
| |
| key->vs_epilog.prim_id_param_offset = offset; |
| assert(index < ARRAY_SIZE(shader->info.vs_output_param_offset)); |
| shader->info.vs_output_param_offset[index] = offset; |
| } |
| } |
| |
| /** |
| * Compute the PS prolog key, which contains all the information needed to |
| * build the PS prolog function, and set related bits in shader->config. |
| */ |
| static void si_get_ps_prolog_key(struct si_shader *shader, |
| union si_shader_part_key *key, |
| bool separate_prolog) |
| { |
| struct tgsi_shader_info *info = &shader->selector->info; |
| |
| memset(key, 0, sizeof(*key)); |
| key->ps_prolog.states = shader->key.part.ps.prolog; |
| key->ps_prolog.colors_read = info->colors_read; |
| key->ps_prolog.num_input_sgprs = shader->info.num_input_sgprs; |
| key->ps_prolog.num_input_vgprs = shader->info.num_input_vgprs; |
| key->ps_prolog.wqm = info->uses_derivatives && |
| (key->ps_prolog.colors_read || |
| key->ps_prolog.states.force_persp_sample_interp || |
| key->ps_prolog.states.force_linear_sample_interp || |
| key->ps_prolog.states.force_persp_center_interp || |
| key->ps_prolog.states.force_linear_center_interp || |
| key->ps_prolog.states.bc_optimize_for_persp || |
| key->ps_prolog.states.bc_optimize_for_linear); |
| |
| if (info->colors_read) { |
| unsigned *color = shader->selector->color_attr_index; |
| |
| if (shader->key.part.ps.prolog.color_two_side) { |
| /* BCOLORs are stored after the last input. */ |
| key->ps_prolog.num_interp_inputs = info->num_inputs; |
| key->ps_prolog.face_vgpr_index = shader->info.face_vgpr_index; |
| shader->config.spi_ps_input_ena |= S_0286CC_FRONT_FACE_ENA(1); |
| } |
| |
| for (unsigned i = 0; i < 2; i++) { |
| unsigned interp = info->input_interpolate[color[i]]; |
| unsigned location = info->input_interpolate_loc[color[i]]; |
| |
| if (!(info->colors_read & (0xf << i*4))) |
| continue; |
| |
| key->ps_prolog.color_attr_index[i] = color[i]; |
| |
| if (shader->key.part.ps.prolog.flatshade_colors && |
| interp == TGSI_INTERPOLATE_COLOR) |
| interp = TGSI_INTERPOLATE_CONSTANT; |
| |
| switch (interp) { |
| case TGSI_INTERPOLATE_CONSTANT: |
| key->ps_prolog.color_interp_vgpr_index[i] = -1; |
| break; |
| case TGSI_INTERPOLATE_PERSPECTIVE: |
| case TGSI_INTERPOLATE_COLOR: |
| /* Force the interpolation location for colors here. */ |
| if (shader->key.part.ps.prolog.force_persp_sample_interp) |
| location = TGSI_INTERPOLATE_LOC_SAMPLE; |
| if (shader->key.part.ps.prolog.force_persp_center_interp) |
| location = TGSI_INTERPOLATE_LOC_CENTER; |
| |
| switch (location) { |
| case TGSI_INTERPOLATE_LOC_SAMPLE: |
| key->ps_prolog.color_interp_vgpr_index[i] = 0; |
| shader->config.spi_ps_input_ena |= |
| S_0286CC_PERSP_SAMPLE_ENA(1); |
| break; |
| case TGSI_INTERPOLATE_LOC_CENTER: |
| key->ps_prolog.color_interp_vgpr_index[i] = 2; |
| shader->config.spi_ps_input_ena |= |
| S_0286CC_PERSP_CENTER_ENA(1); |
| break; |
| case TGSI_INTERPOLATE_LOC_CENTROID: |
| key->ps_prolog.color_interp_vgpr_index[i] = 4; |
| shader->config.spi_ps_input_ena |= |
| S_0286CC_PERSP_CENTROID_ENA(1); |
| break; |
| default: |
| assert(0); |
| } |
| break; |
| case TGSI_INTERPOLATE_LINEAR: |
| /* Force the interpolation location for colors here. */ |
| if (shader->key.part.ps.prolog.force_linear_sample_interp) |
| location = TGSI_INTERPOLATE_LOC_SAMPLE; |
| if (shader->key.part.ps.prolog.force_linear_center_interp) |
| location = TGSI_INTERPOLATE_LOC_CENTER; |
| |
| /* The VGPR assignment for non-monolithic shaders |
| * works because InitialPSInputAddr is set on the |
| * main shader and PERSP_PULL_MODEL is never used. |
| */ |
| switch (location) { |
| case TGSI_INTERPOLATE_LOC_SAMPLE: |
| key->ps_prolog.color_interp_vgpr_index[i] = |
| separate_prolog ? 6 : 9; |
| shader->config.spi_ps_input_ena |= |
| S_0286CC_LINEAR_SAMPLE_ENA(1); |
| break; |
| case TGSI_INTERPOLATE_LOC_CENTER: |
| key->ps_prolog.color_interp_vgpr_index[i] = |
| separate_prolog ? 8 : 11; |
| shader->config.spi_ps_input_ena |= |
| S_0286CC_LINEAR_CENTER_ENA(1); |
| break; |
| case TGSI_INTERPOLATE_LOC_CENTROID: |
| key->ps_prolog.color_interp_vgpr_index[i] = |
| separate_prolog ? 10 : 13; |
| shader->config.spi_ps_input_ena |= |
| S_0286CC_LINEAR_CENTROID_ENA(1); |
| break; |
| default: |
| assert(0); |
| } |
| break; |
| default: |
| assert(0); |
| } |
| } |
| } |
| } |
| |
| /** |
| * Check whether a PS prolog is required based on the key. |
| */ |
| static bool si_need_ps_prolog(const union si_shader_part_key *key) |
| { |
| return key->ps_prolog.colors_read || |
| key->ps_prolog.states.force_persp_sample_interp || |
| key->ps_prolog.states.force_linear_sample_interp || |
| key->ps_prolog.states.force_persp_center_interp || |
| key->ps_prolog.states.force_linear_center_interp || |
| key->ps_prolog.states.bc_optimize_for_persp || |
| key->ps_prolog.states.bc_optimize_for_linear || |
| key->ps_prolog.states.poly_stipple; |
| } |
| |
| /** |
| * Compute the PS epilog key, which contains all the information needed to |
| * build the PS epilog function. |
| */ |
| static void si_get_ps_epilog_key(struct si_shader *shader, |
| union si_shader_part_key *key) |
| { |
| struct tgsi_shader_info *info = &shader->selector->info; |
| memset(key, 0, sizeof(*key)); |
| key->ps_epilog.colors_written = info->colors_written; |
| key->ps_epilog.writes_z = info->writes_z; |
| key->ps_epilog.writes_stencil = info->writes_stencil; |
| key->ps_epilog.writes_samplemask = info->writes_samplemask; |
| key->ps_epilog.states = shader->key.part.ps.epilog; |
| } |
| |
| /** |
| * Build the GS prolog function. Rotate the input vertices for triangle strips |
| * with adjacency. |
| */ |
| static void si_build_gs_prolog_function(struct si_shader_context *ctx, |
| union si_shader_part_key *key) |
| { |
| const unsigned num_sgprs = SI_GS_NUM_USER_SGPR + 2; |
| const unsigned num_vgprs = 8; |
| struct gallivm_state *gallivm = &ctx->gallivm; |
| LLVMBuilderRef builder = gallivm->builder; |
| LLVMTypeRef params[32]; |
| LLVMTypeRef returns[32]; |
| LLVMValueRef func, ret; |
| |
| for (unsigned i = 0; i < num_sgprs; ++i) { |
| params[i] = ctx->i32; |
| returns[i] = ctx->i32; |
| } |
| |
| for (unsigned i = 0; i < num_vgprs; ++i) { |
| params[num_sgprs + i] = ctx->i32; |
| returns[num_sgprs + i] = ctx->f32; |
| } |
| |
| /* Create the function. */ |
| si_create_function(ctx, "gs_prolog", returns, num_sgprs + num_vgprs, |
| params, num_sgprs + num_vgprs, num_sgprs - 1); |
| func = ctx->main_fn; |
| |
| /* Copy inputs to outputs. This should be no-op, as the registers match, |
| * but it will prevent the compiler from overwriting them unintentionally. |
| */ |
| ret = ctx->return_value; |
| for (unsigned i = 0; i < num_sgprs; i++) { |
| LLVMValueRef p = LLVMGetParam(func, i); |
| ret = LLVMBuildInsertValue(builder, ret, p, i, ""); |
| } |
| for (unsigned i = 0; i < num_vgprs; i++) { |
| LLVMValueRef p = LLVMGetParam(func, num_sgprs + i); |
| p = LLVMBuildBitCast(builder, p, ctx->f32, ""); |
| ret = LLVMBuildInsertValue(builder, ret, p, num_sgprs + i, ""); |
| } |
| |
| if (key->gs_prolog.states.tri_strip_adj_fix) { |
| /* Remap the input vertices for every other primitive. */ |
| const unsigned vtx_params[6] = { |
| num_sgprs, |
| num_sgprs + 1, |
| num_sgprs + 3, |
| num_sgprs + 4, |
| num_sgprs + 5, |
| num_sgprs + 6 |
| }; |
| LLVMValueRef prim_id, rotate; |
| |
| prim_id = LLVMGetParam(func, num_sgprs + 2); |
| rotate = LLVMBuildTrunc(builder, prim_id, ctx->i1, ""); |
| |
| for (unsigned i = 0; i < 6; ++i) { |
| LLVMValueRef base, rotated, actual; |
| base = LLVMGetParam(func, vtx_params[i]); |
| rotated = LLVMGetParam(func, vtx_params[(i + 4) % 6]); |
| actual = LLVMBuildSelect(builder, rotate, rotated, base, ""); |
| actual = LLVMBuildBitCast(builder, actual, ctx->f32, ""); |
| ret = LLVMBuildInsertValue(builder, ret, actual, vtx_params[i], ""); |
| } |
| } |
| |
| LLVMBuildRet(builder, ret); |
| } |
| |
| /** |
| * Given a list of shader part functions, build a wrapper function that |
| * runs them in sequence to form a monolithic shader. |
| */ |
| static void si_build_wrapper_function(struct si_shader_context *ctx, |
| LLVMValueRef *parts, |
| unsigned num_parts, |
| unsigned main_part) |
| { |
| struct gallivm_state *gallivm = &ctx->gallivm; |
| LLVMBuilderRef builder = ctx->gallivm.builder; |
| /* PS epilog has one arg per color component */ |
| LLVMTypeRef param_types[48]; |
| LLVMValueRef out[48]; |
| LLVMTypeRef function_type; |
| unsigned num_params; |
| unsigned num_out; |
| MAYBE_UNUSED unsigned num_out_sgpr; /* used in debug checks */ |
| unsigned num_sgprs, num_vgprs; |
| unsigned last_sgpr_param; |
| unsigned gprs; |
| |
| for (unsigned i = 0; i < num_parts; ++i) { |
| lp_add_function_attr(parts[i], -1, LP_FUNC_ATTR_ALWAYSINLINE); |
| LLVMSetLinkage(parts[i], LLVMPrivateLinkage); |
| } |
| |
| /* The parameters of the wrapper function correspond to those of the |
| * first part in terms of SGPRs and VGPRs, but we use the types of the |
| * main part to get the right types. This is relevant for the |
| * dereferenceable attribute on descriptor table pointers. |
| */ |
| num_sgprs = 0; |
| num_vgprs = 0; |
| |
| function_type = LLVMGetElementType(LLVMTypeOf(parts[0])); |
| num_params = LLVMCountParamTypes(function_type); |
| |
| for (unsigned i = 0; i < num_params; ++i) { |
| LLVMValueRef param = LLVMGetParam(parts[0], i); |
| |
| if (ac_is_sgpr_param(param)) { |
| assert(num_vgprs == 0); |
| num_sgprs += llvm_get_type_size(LLVMTypeOf(param)) / 4; |
| } else { |
| num_vgprs += llvm_get_type_size(LLVMTypeOf(param)) / 4; |
| } |
| } |
| assert(num_vgprs + num_sgprs <= ARRAY_SIZE(param_types)); |
| |
| num_params = 0; |
| last_sgpr_param = 0; |
| gprs = 0; |
| while (gprs < num_sgprs + num_vgprs) { |
| LLVMValueRef param = LLVMGetParam(parts[main_part], num_params); |
| unsigned size; |
| |
| param_types[num_params] = LLVMTypeOf(param); |
| if (gprs < num_sgprs) |
| last_sgpr_param = num_params; |
| size = llvm_get_type_size(param_types[num_params]) / 4; |
| num_params++; |
| |
| assert(ac_is_sgpr_param(param) == (gprs < num_sgprs)); |
| assert(gprs + size <= num_sgprs + num_vgprs && |
| (gprs >= num_sgprs || gprs + size <= num_sgprs)); |
| |
| gprs += size; |
| } |
| |
| si_create_function(ctx, "wrapper", NULL, 0, param_types, num_params, last_sgpr_param); |
| |
| /* Record the arguments of the function as if they were an output of |
| * a previous part. |
| */ |
| num_out = 0; |
| num_out_sgpr = 0; |
| |
| for (unsigned i = 0; i < num_params; ++i) { |
| LLVMValueRef param = LLVMGetParam(ctx->main_fn, i); |
| LLVMTypeRef param_type = LLVMTypeOf(param); |
| LLVMTypeRef out_type = i <= last_sgpr_param ? ctx->i32 : ctx->f32; |
| unsigned size = llvm_get_type_size(param_type) / 4; |
| |
| if (size == 1) { |
| if (param_type != out_type) |
| param = LLVMBuildBitCast(builder, param, out_type, ""); |
| out[num_out++] = param; |
| } else { |
| LLVMTypeRef vector_type = LLVMVectorType(out_type, size); |
| |
| if (LLVMGetTypeKind(param_type) == LLVMPointerTypeKind) { |
| param = LLVMBuildPtrToInt(builder, param, ctx->i64, ""); |
| param_type = ctx->i64; |
| } |
| |
| if (param_type != vector_type) |
| param = LLVMBuildBitCast(builder, param, vector_type, ""); |
| |
| for (unsigned j = 0; j < size; ++j) |
| out[num_out++] = LLVMBuildExtractElement( |
| builder, param, LLVMConstInt(ctx->i32, j, 0), ""); |
| } |
| |
| if (i <= last_sgpr_param) |
| num_out_sgpr = num_out; |
| } |
| |
| /* Now chain the parts. */ |
| for (unsigned part = 0; part < num_parts; ++part) { |
| LLVMValueRef in[48]; |
| LLVMValueRef ret; |
| LLVMTypeRef ret_type; |
| unsigned out_idx = 0; |
| |
| num_params = LLVMCountParams(parts[part]); |
| assert(num_params <= ARRAY_SIZE(param_types)); |
| |
| /* Derive arguments for the next part from outputs of the |
| * previous one. |
| */ |
| for (unsigned param_idx = 0; param_idx < num_params; ++param_idx) { |
| LLVMValueRef param; |
| LLVMTypeRef param_type; |
| bool is_sgpr; |
| unsigned param_size; |
| LLVMValueRef arg = NULL; |
| |
| param = LLVMGetParam(parts[part], param_idx); |
| param_type = LLVMTypeOf(param); |
| param_size = llvm_get_type_size(param_type) / 4; |
| is_sgpr = ac_is_sgpr_param(param); |
| |
| if (is_sgpr) { |
| #if HAVE_LLVM < 0x0400 |
| LLVMRemoveAttribute(param, LLVMByValAttribute); |
| #else |
| unsigned kind_id = LLVMGetEnumAttributeKindForName("byval", 5); |
| LLVMRemoveEnumAttributeAtIndex(parts[part], param_idx + 1, kind_id); |
| #endif |
| lp_add_function_attr(parts[part], param_idx + 1, LP_FUNC_ATTR_INREG); |
| } |
| |
| assert(out_idx + param_size <= (is_sgpr ? num_out_sgpr : num_out)); |
| assert(is_sgpr || out_idx >= num_out_sgpr); |
| |
| if (param_size == 1) |
| arg = out[out_idx]; |
| else |
| arg = lp_build_gather_values(gallivm, &out[out_idx], param_size); |
| |
| if (LLVMTypeOf(arg) != param_type) { |
| if (LLVMGetTypeKind(param_type) == LLVMPointerTypeKind) { |
| arg = LLVMBuildBitCast(builder, arg, ctx->i64, ""); |
| arg = LLVMBuildIntToPtr(builder, arg, param_type, ""); |
| } else { |
| arg = LLVMBuildBitCast(builder, arg, param_type, ""); |
| } |
| } |
| |
| in[param_idx] = arg; |
| out_idx += param_size; |
| } |
| |
| ret = LLVMBuildCall(builder, parts[part], in, num_params, ""); |
| ret_type = LLVMTypeOf(ret); |
| |
| /* Extract the returned GPRs. */ |
| num_out = 0; |
| num_out_sgpr = 0; |
| |
| if (LLVMGetTypeKind(ret_type) != LLVMVoidTypeKind) { |
| assert(LLVMGetTypeKind(ret_type) == LLVMStructTypeKind); |
| |
| unsigned ret_size = LLVMCountStructElementTypes(ret_type); |
| |
| for (unsigned i = 0; i < ret_size; ++i) { |
| LLVMValueRef val = |
| LLVMBuildExtractValue(builder, ret, i, ""); |
| |
| out[num_out++] = val; |
| |
| if (LLVMTypeOf(val) == ctx->i32) { |
| assert(num_out_sgpr + 1 == num_out); |
| num_out_sgpr = num_out; |
| } |
| } |
| } |
| } |
| |
| LLVMBuildRetVoid(builder); |
| } |
| |
| int si_compile_tgsi_shader(struct si_screen *sscreen, |
| LLVMTargetMachineRef tm, |
| struct si_shader *shader, |
| bool is_monolithic, |
| struct pipe_debug_callback *debug) |
| { |
| struct si_shader_selector *sel = shader->selector; |
| struct si_shader_context ctx; |
| struct lp_build_tgsi_context *bld_base; |
| LLVMModuleRef mod; |
| int r = -1; |
| |
| /* Dump TGSI code before doing TGSI->LLVM conversion in case the |
| * conversion fails. */ |
| if (r600_can_dump_shader(&sscreen->b, sel->info.processor) && |
| !(sscreen->b.debug_flags & DBG_NO_TGSI)) { |
| tgsi_dump(sel->tokens, 0); |
| si_dump_streamout(&sel->so); |
| } |
| |
| si_init_shader_ctx(&ctx, sscreen, shader, tm); |
| ctx.separate_prolog = !is_monolithic; |
| |
| memset(shader->info.vs_output_param_offset, EXP_PARAM_UNDEFINED, |
| sizeof(shader->info.vs_output_param_offset)); |
| |
| shader->info.uses_instanceid = sel->info.uses_instanceid; |
| |
| bld_base = &ctx.bld_base; |
| ctx.load_system_value = declare_system_value; |
| |
| if (!si_compile_tgsi_main(&ctx, shader)) { |
| si_llvm_dispose(&ctx); |
| return -1; |
| } |
| |
| if (is_monolithic && ctx.type == PIPE_SHADER_VERTEX) { |
| LLVMValueRef parts[3]; |
| bool need_prolog; |
| bool need_epilog; |
| |
| need_prolog = sel->info.num_inputs; |
| need_epilog = !shader->key.as_es && !shader->key.as_ls; |
| |
| parts[need_prolog ? 1 : 0] = ctx.main_fn; |
| |
| if (need_prolog) { |
| union si_shader_part_key prolog_key; |
| si_get_vs_prolog_key(shader, &prolog_key); |
| si_build_vs_prolog_function(&ctx, &prolog_key); |
| parts[0] = ctx.main_fn; |
| } |
| |
| if (need_epilog) { |
| union si_shader_part_key epilog_key; |
| si_get_vs_epilog_key(shader, &shader->key.part.vs.epilog, &epilog_key); |
| si_build_vs_epilog_function(&ctx, &epilog_key); |
| parts[need_prolog ? 2 : 1] = ctx.main_fn; |
| } |
| |
| si_build_wrapper_function(&ctx, parts, 1 + need_prolog + need_epilog, |
| need_prolog ? 1 : 0); |
| } else if (is_monolithic && ctx.type == PIPE_SHADER_TESS_CTRL) { |
| LLVMValueRef parts[2]; |
| union si_shader_part_key epilog_key; |
| |
| parts[0] = ctx.main_fn; |
| |
| memset(&epilog_key, 0, sizeof(epilog_key)); |
| epilog_key.tcs_epilog.states = shader->key.part.tcs.epilog; |
| si_build_tcs_epilog_function(&ctx, &epilog_key); |
| parts[1] = ctx.main_fn; |
| |
| si_build_wrapper_function(&ctx, parts, 2, 0); |
| } else if (is_monolithic && ctx.type == PIPE_SHADER_TESS_EVAL && |
| !shader->key.as_es) { |
| LLVMValueRef parts[2]; |
| union si_shader_part_key epilog_key; |
| |
| parts[0] = ctx.main_fn; |
| |
| si_get_vs_epilog_key(shader, &shader->key.part.tes.epilog, &epilog_key); |
| si_build_vs_epilog_function(&ctx, &epilog_key); |
| parts[1] = ctx.main_fn; |
| |
| si_build_wrapper_function(&ctx, parts, 2, 0); |
| } else if (is_monolithic && ctx.type == PIPE_SHADER_GEOMETRY) { |
| LLVMValueRef parts[2]; |
| union si_shader_part_key prolog_key; |
| |
| parts[1] = ctx.main_fn; |
| |
| memset(&prolog_key, 0, sizeof(prolog_key)); |
| prolog_key.gs_prolog.states = shader->key.part.gs.prolog; |
| si_build_gs_prolog_function(&ctx, &prolog_key); |
| parts[0] = ctx.main_fn; |
| |
| si_build_wrapper_function(&ctx, parts, 2, 1); |
| } else if (is_monolithic && ctx.type == PIPE_SHADER_FRAGMENT) { |
| LLVMValueRef parts[3]; |
| union si_shader_part_key prolog_key; |
| union si_shader_part_key epilog_key; |
| bool need_prolog; |
| |
| si_get_ps_prolog_key(shader, &prolog_key, false); |
| need_prolog = si_need_ps_prolog(&prolog_key); |
| |
| parts[need_prolog ? 1 : 0] = ctx.main_fn; |
| |
| if (need_prolog) { |
| si_build_ps_prolog_function(&ctx, &prolog_key); |
| parts[0] = ctx.main_fn; |
| } |
| |
| si_get_ps_epilog_key(shader, &epilog_key); |
| si_build_ps_epilog_function(&ctx, &epilog_key); |
| parts[need_prolog ? 2 : 1] = ctx.main_fn; |
| |
| si_build_wrapper_function(&ctx, parts, need_prolog ? 3 : 2, need_prolog ? 1 : 0); |
| } |
| |
| mod = bld_base->base.gallivm->module; |
| |
| /* Dump LLVM IR before any optimization passes */ |
| if (sscreen->b.debug_flags & DBG_PREOPT_IR && |
| r600_can_dump_shader(&sscreen->b, ctx.type)) |
| LLVMDumpModule(mod); |
| |
| si_llvm_finalize_module(&ctx, |
| r600_extra_shader_checks(&sscreen->b, ctx.type)); |
| |
| /* Post-optimization transformations and analysis. */ |
| si_eliminate_const_vs_outputs(&ctx); |
| |
| if ((debug && debug->debug_message) || |
| r600_can_dump_shader(&sscreen->b, ctx.type)) |
| si_count_scratch_private_memory(&ctx); |
| |
| /* Compile to bytecode. */ |
| r = si_compile_llvm(sscreen, &shader->binary, &shader->config, tm, |
| mod, debug, ctx.type, "TGSI shader"); |
| si_llvm_dispose(&ctx); |
| if (r) { |
| fprintf(stderr, "LLVM failed to compile shader\n"); |
| return r; |
| } |
| |
| /* Validate SGPR and VGPR usage for compute to detect compiler bugs. |
| * LLVM 3.9svn has this bug. |
| */ |
| if (sel->type == PIPE_SHADER_COMPUTE) { |
| unsigned wave_size = 64; |
| unsigned max_vgprs = 256; |
| unsigned max_sgprs = sscreen->b.chip_class >= VI ? 800 : 512; |
| unsigned max_sgprs_per_wave = 128; |
| unsigned max_block_threads = si_get_max_workgroup_size(shader); |
| unsigned min_waves_per_cu = DIV_ROUND_UP(max_block_threads, wave_size); |
| unsigned min_waves_per_simd = DIV_ROUND_UP(min_waves_per_cu, 4); |
| |
| max_vgprs = max_vgprs / min_waves_per_simd; |
| max_sgprs = MIN2(max_sgprs / min_waves_per_simd, max_sgprs_per_wave); |
| |
| if (shader->config.num_sgprs > max_sgprs || |
| shader->config.num_vgprs > max_vgprs) { |
| fprintf(stderr, "LLVM failed to compile a shader correctly: " |
| "SGPR:VGPR usage is %u:%u, but the hw limit is %u:%u\n", |
| shader->config.num_sgprs, shader->config.num_vgprs, |
| max_sgprs, max_vgprs); |
| |
| /* Just terminate the process, because dependent |
| * shaders can hang due to bad input data, but use |
| * the env var to allow shader-db to work. |
| */ |
| if (!debug_get_bool_option("SI_PASS_BAD_SHADERS", false)) |
| abort(); |
| } |
| } |
| |
| /* Add the scratch offset to input SGPRs. */ |
| if (shader->config.scratch_bytes_per_wave) |
| shader->info.num_input_sgprs += 1; /* scratch byte offset */ |
| |
| /* Calculate the number of fragment input VGPRs. */ |
| if (ctx.type == PIPE_SHADER_FRAGMENT) { |
| shader->info.num_input_vgprs = 0; |
| shader->info.face_vgpr_index = -1; |
| |
| if (G_0286CC_PERSP_SAMPLE_ENA(shader->config.spi_ps_input_addr)) |
| shader->info.num_input_vgprs += 2; |
| if (G_0286CC_PERSP_CENTER_ENA(shader->config.spi_ps_input_addr)) |
| shader->info.num_input_vgprs += 2; |
| if (G_0286CC_PERSP_CENTROID_ENA(shader->config.spi_ps_input_addr)) |
| shader->info.num_input_vgprs += 2; |
| if (G_0286CC_PERSP_PULL_MODEL_ENA(shader->config.spi_ps_input_addr)) |
| shader->info.num_input_vgprs += 3; |
| if (G_0286CC_LINEAR_SAMPLE_ENA(shader->config.spi_ps_input_addr)) |
| shader->info.num_input_vgprs += 2; |
| if (G_0286CC_LINEAR_CENTER_ENA(shader->config.spi_ps_input_addr)) |
| shader->info.num_input_vgprs += 2; |
| if (G_0286CC_LINEAR_CENTROID_ENA(shader->config.spi_ps_input_addr)) |
| shader->info.num_input_vgprs += 2; |
| if (G_0286CC_LINE_STIPPLE_TEX_ENA(shader->config.spi_ps_input_addr)) |
| shader->info.num_input_vgprs += 1; |
| if (G_0286CC_POS_X_FLOAT_ENA(shader->config.spi_ps_input_addr)) |
| shader->info.num_input_vgprs += 1; |
| if (G_0286CC_POS_Y_FLOAT_ENA(shader->config.spi_ps_input_addr)) |
| shader->info.num_input_vgprs += 1; |
| if (G_0286CC_POS_Z_FLOAT_ENA(shader->config.spi_ps_input_addr)) |
| shader->info.num_input_vgprs += 1; |
| if (G_0286CC_POS_W_FLOAT_ENA(shader->config.spi_ps_input_addr)) |
| shader->info.num_input_vgprs += 1; |
| if (G_0286CC_FRONT_FACE_ENA(shader->config.spi_ps_input_addr)) { |
| shader->info.face_vgpr_index = shader->info.num_input_vgprs; |
| shader->info.num_input_vgprs += 1; |
| } |
| if (G_0286CC_ANCILLARY_ENA(shader->config.spi_ps_input_addr)) |
| shader->info.num_input_vgprs += 1; |
| if (G_0286CC_SAMPLE_COVERAGE_ENA(shader->config.spi_ps_input_addr)) |
| shader->info.num_input_vgprs += 1; |
| if (G_0286CC_POS_FIXED_PT_ENA(shader->config.spi_ps_input_addr)) |
| shader->info.num_input_vgprs += 1; |
| } |
| |
| return 0; |
| } |
| |
| /** |
| * Create, compile and return a shader part (prolog or epilog). |
| * |
| * \param sscreen screen |
| * \param list list of shader parts of the same category |
| * \param type shader type |
| * \param key shader part key |
| * \param prolog whether the part being requested is a prolog |
| * \param tm LLVM target machine |
| * \param debug debug callback |
| * \param build the callback responsible for building the main function |
| * \return non-NULL on success |
| */ |
| static struct si_shader_part * |
| si_get_shader_part(struct si_screen *sscreen, |
| struct si_shader_part **list, |
| enum pipe_shader_type type, |
| bool prolog, |
| union si_shader_part_key *key, |
| LLVMTargetMachineRef tm, |
| struct pipe_debug_callback *debug, |
| void (*build)(struct si_shader_context *, |
| union si_shader_part_key *), |
| const char *name) |
| { |
| struct si_shader_part *result; |
| |
| pipe_mutex_lock(sscreen->shader_parts_mutex); |
| |
| /* Find existing. */ |
| for (result = *list; result; result = result->next) { |
| if (memcmp(&result->key, key, sizeof(*key)) == 0) { |
| pipe_mutex_unlock(sscreen->shader_parts_mutex); |
| return result; |
| } |
| } |
| |
| /* Compile a new one. */ |
| result = CALLOC_STRUCT(si_shader_part); |
| result->key = *key; |
| |
| struct si_shader shader = {}; |
| struct si_shader_context ctx; |
| struct gallivm_state *gallivm = &ctx.gallivm; |
| |
| si_init_shader_ctx(&ctx, sscreen, &shader, tm); |
| ctx.type = type; |
| |
| switch (type) { |
| case PIPE_SHADER_VERTEX: |
| break; |
| case PIPE_SHADER_TESS_CTRL: |
| assert(!prolog); |
| shader.key.part.tcs.epilog = key->tcs_epilog.states; |
| break; |
| case PIPE_SHADER_GEOMETRY: |
| assert(prolog); |
| break; |
| case PIPE_SHADER_FRAGMENT: |
| if (prolog) |
| shader.key.part.ps.prolog = key->ps_prolog.states; |
| else |
| shader.key.part.ps.epilog = key->ps_epilog.states; |
| break; |
| default: |
| unreachable("bad shader part"); |
| } |
| |
| build(&ctx, key); |
| |
| /* Compile. */ |
| si_llvm_finalize_module(&ctx, |
| r600_extra_shader_checks(&sscreen->b, PIPE_SHADER_FRAGMENT)); |
| |
| if (si_compile_llvm(sscreen, &result->binary, &result->config, tm, |
| gallivm->module, debug, ctx.type, name)) { |
| FREE(result); |
| result = NULL; |
| goto out; |
| } |
| |
| result->next = *list; |
| *list = result; |
| |
| out: |
| si_llvm_dispose(&ctx); |
| pipe_mutex_unlock(sscreen->shader_parts_mutex); |
| return result; |
| } |
| |
| /** |
| * Build the vertex shader prolog function. |
| * |
| * The inputs are the same as VS (a lot of SGPRs and 4 VGPR system values). |
| * All inputs are returned unmodified. The vertex load indices are |
| * stored after them, which will be used by the API VS for fetching inputs. |
| * |
| * For example, the expected outputs for instance_divisors[] = {0, 1, 2} are: |
| * input_v0, |
| * input_v1, |
| * input_v2, |
| * input_v3, |
| * (VertexID + BaseVertex), |
| * (InstanceID + StartInstance), |
| * (InstanceID / 2 + StartInstance) |
| */ |
| static void si_build_vs_prolog_function(struct si_shader_context *ctx, |
| union si_shader_part_key *key) |
| { |
| struct gallivm_state *gallivm = &ctx->gallivm; |
| LLVMTypeRef *params, *returns; |
| LLVMValueRef ret, func; |
| int last_sgpr, num_params, num_returns, i; |
| |
| ctx->param_vertex_id = key->vs_prolog.num_input_sgprs; |
| ctx->param_instance_id = key->vs_prolog.num_input_sgprs + 3; |
| |
| /* 4 preloaded VGPRs + vertex load indices as prolog outputs */ |
| params = alloca((key->vs_prolog.num_input_sgprs + 4) * |
| sizeof(LLVMTypeRef)); |
| returns = alloca((key->vs_prolog.num_input_sgprs + 4 + |
| key->vs_prolog.last_input + 1) * |
| sizeof(LLVMTypeRef)); |
| num_params = 0; |
| num_returns = 0; |
| |
| /* Declare input and output SGPRs. */ |
| num_params = 0; |
| for (i = 0; i < key->vs_prolog.num_input_sgprs; i++) { |
| params[num_params++] = ctx->i32; |
| returns[num_returns++] = ctx->i32; |
| } |
| last_sgpr = num_params - 1; |
| |
| /* 4 preloaded VGPRs (outputs must be floats) */ |
| for (i = 0; i < 4; i++) { |
| params[num_params++] = ctx->i32; |
| returns[num_returns++] = ctx->f32; |
| } |
| |
| /* Vertex load indices. */ |
| for (i = 0; i <= key->vs_prolog.last_input; i++) |
| returns[num_returns++] = ctx->f32; |
| |
| /* Create the function. */ |
| si_create_function(ctx, "vs_prolog", returns, num_returns, params, |
| num_params, last_sgpr); |
| func = ctx->main_fn; |
| |
| /* Copy inputs to outputs. This should be no-op, as the registers match, |
| * but it will prevent the compiler from overwriting them unintentionally. |
| */ |
| ret = ctx->return_value; |
| for (i = 0; i < key->vs_prolog.num_input_sgprs; i++) { |
| LLVMValueRef p = LLVMGetParam(func, i); |
| ret = LLVMBuildInsertValue(gallivm->builder, ret, p, i, ""); |
| } |
| for (i = num_params - 4; i < num_params; i++) { |
| LLVMValueRef p = LLVMGetParam(func, i); |
| p = LLVMBuildBitCast(gallivm->builder, p, ctx->f32, ""); |
| ret = LLVMBuildInsertValue(gallivm->builder, ret, p, i, ""); |
| } |
| |
| /* Compute vertex load indices from instance divisors. */ |
| for (i = 0; i <= key->vs_prolog.last_input; i++) { |
| unsigned divisor = key->vs_prolog.states.instance_divisors[i]; |
| LLVMValueRef index; |
| |
| if (divisor) { |
| /* InstanceID / Divisor + StartInstance */ |
| index = get_instance_index_for_fetch(ctx, |
| SI_SGPR_START_INSTANCE, |
| divisor); |
| } else { |
| /* VertexID + BaseVertex */ |
| index = LLVMBuildAdd(gallivm->builder, |
| LLVMGetParam(func, ctx->param_vertex_id), |
| LLVMGetParam(func, SI_SGPR_BASE_VERTEX), ""); |
| } |
| |
| index = LLVMBuildBitCast(gallivm->builder, index, ctx->f32, ""); |
| ret = LLVMBuildInsertValue(gallivm->builder, ret, index, |
| num_params++, ""); |
| } |
| |
| si_llvm_build_ret(ctx, ret); |
| } |
| |
| /** |
| * Build the vertex shader epilog function. This is also used by the tessellation |
| * evaluation shader compiled as VS. |
| * |
| * The input is PrimitiveID. |
| * |
| * If PrimitiveID is required by the pixel shader, export it. |
| * Otherwise, do nothing. |
| */ |
| static void si_build_vs_epilog_function(struct si_shader_context *ctx, |
| union si_shader_part_key *key) |
| { |
| struct gallivm_state *gallivm = &ctx->gallivm; |
| struct lp_build_tgsi_context *bld_base = &ctx->bld_base; |
| LLVMTypeRef params[5]; |
| int num_params, i; |
| |
| /* Declare input VGPRs. */ |
| num_params = key->vs_epilog.states.export_prim_id ? |
| (VS_EPILOG_PRIMID_LOC + 1) : 0; |
| assert(num_params <= ARRAY_SIZE(params)); |
| |
| for (i = 0; i < num_params; i++) |
| params[i] = ctx->f32; |
| |
| /* Create the function. */ |
| si_create_function(ctx, "vs_epilog", NULL, 0, params, num_params, -1); |
| |
| /* Emit exports. */ |
| if (key->vs_epilog.states.export_prim_id) { |
| struct lp_build_context *base = &bld_base->base; |
| struct lp_build_context *uint = &bld_base->uint_bld; |
| LLVMValueRef args[9]; |
| |
| args[0] = lp_build_const_int32(base->gallivm, 0x0); /* enabled channels */ |
| args[1] = uint->zero; /* whether the EXEC mask is valid */ |
| args[2] = uint->zero; /* DONE bit */ |
| args[3] = lp_build_const_int32(base->gallivm, V_008DFC_SQ_EXP_PARAM + |
| key->vs_epilog.prim_id_param_offset); |
| args[4] = uint->zero; /* COMPR flag (0 = 32-bit export) */ |
| args[5] = LLVMGetParam(ctx->main_fn, |
| VS_EPILOG_PRIMID_LOC); /* X */ |
| args[6] = base->undef; /* Y */ |
| args[7] = base->undef; /* Z */ |
| args[8] = base->undef; /* W */ |
| |
| lp_build_intrinsic(base->gallivm->builder, "llvm.SI.export", |
| LLVMVoidTypeInContext(base->gallivm->context), |
| args, 9, 0); |
| } |
| |
| LLVMBuildRetVoid(gallivm->builder); |
| } |
| |
| /** |
| * Create & compile a vertex shader epilog. This a helper used by VS and TES. |
| */ |
| static bool si_get_vs_epilog(struct si_screen *sscreen, |
| LLVMTargetMachineRef tm, |
| struct si_shader *shader, |
| struct pipe_debug_callback *debug, |
| struct si_vs_epilog_bits *states) |
| { |
| union si_shader_part_key epilog_key; |
| |
| si_get_vs_epilog_key(shader, states, &epilog_key); |
| |
| shader->epilog = si_get_shader_part(sscreen, &sscreen->vs_epilogs, |
| PIPE_SHADER_VERTEX, true, |
| &epilog_key, tm, debug, |
| si_build_vs_epilog_function, |
| "Vertex Shader Epilog"); |
| return shader->epilog != NULL; |
| } |
| |
| /** |
| * Select and compile (or reuse) vertex shader parts (prolog & epilog). |
| */ |
| static bool si_shader_select_vs_parts(struct si_screen *sscreen, |
| LLVMTargetMachineRef tm, |
| struct si_shader *shader, |
| struct pipe_debug_callback *debug) |
| { |
| struct tgsi_shader_info *info = &shader->selector->info; |
| union si_shader_part_key prolog_key; |
| |
| /* Get the prolog. */ |
| si_get_vs_prolog_key(shader, &prolog_key); |
| |
| /* The prolog is a no-op if there are no inputs. */ |
| if (info->num_inputs) { |
| shader->prolog = |
| si_get_shader_part(sscreen, &sscreen->vs_prologs, |
| PIPE_SHADER_VERTEX, true, |
| &prolog_key, tm, debug, |
| si_build_vs_prolog_function, |
| "Vertex Shader Prolog"); |
| if (!shader->prolog) |
| return false; |
| } |
| |
| /* Get the epilog. */ |
| if (!shader->key.as_es && !shader->key.as_ls && |
| !si_get_vs_epilog(sscreen, tm, shader, debug, |
| &shader->key.part.vs.epilog)) |
| return false; |
| |
| return true; |
| } |
| |
| /** |
| * Select and compile (or reuse) TES parts (epilog). |
| */ |
| static bool si_shader_select_tes_parts(struct si_screen *sscreen, |
| LLVMTargetMachineRef tm, |
| struct si_shader *shader, |
| struct pipe_debug_callback *debug) |
| { |
| if (shader->key.as_es) |
| return true; |
| |
| /* TES compiled as VS. */ |
| return si_get_vs_epilog(sscreen, tm, shader, debug, |
| &shader->key.part.tes.epilog); |
| } |
| |
| /** |
| * Compile the TCS epilog function. This writes tesselation factors to memory |
| * based on the output primitive type of the tesselator (determined by TES). |
| */ |
| static void si_build_tcs_epilog_function(struct si_shader_context *ctx, |
| union si_shader_part_key *key) |
| { |
| struct gallivm_state *gallivm = &ctx->gallivm; |
| struct lp_build_tgsi_context *bld_base = &ctx->bld_base; |
| LLVMTypeRef params[16]; |
| LLVMValueRef func; |
| int last_sgpr, num_params; |
| |
| /* Declare inputs. Only RW_BUFFERS and TESS_FACTOR_OFFSET are used. */ |
| params[SI_PARAM_RW_BUFFERS] = const_array(ctx->v16i8, SI_NUM_RW_BUFFERS); |
| params[SI_PARAM_CONST_BUFFERS] = ctx->i64; |
| params[SI_PARAM_SAMPLERS] = ctx->i64; |
| params[SI_PARAM_IMAGES] = ctx->i64; |
| params[SI_PARAM_SHADER_BUFFERS] = ctx->i64; |
| params[SI_PARAM_TCS_OFFCHIP_LAYOUT] = ctx->i32; |
| params[SI_PARAM_TCS_OUT_OFFSETS] = ctx->i32; |
| params[SI_PARAM_TCS_OUT_LAYOUT] = ctx->i32; |
| params[SI_PARAM_TCS_IN_LAYOUT] = ctx->i32; |
| params[ctx->param_oc_lds = SI_PARAM_TCS_OC_LDS] = ctx->i32; |
| params[SI_PARAM_TESS_FACTOR_OFFSET] = ctx->i32; |
| last_sgpr = SI_PARAM_TESS_FACTOR_OFFSET; |
| num_params = last_sgpr + 1; |
| |
| params[num_params++] = ctx->i32; /* patch index within the wave (REL_PATCH_ID) */ |
| params[num_params++] = ctx->i32; /* invocation ID within the patch */ |
| params[num_params++] = ctx->i32; /* LDS offset where tess factors should be loaded from */ |
| |
| /* Create the function. */ |
| si_create_function(ctx, "tcs_epilog", NULL, 0, params, num_params, last_sgpr); |
| declare_tess_lds(ctx); |
| func = ctx->main_fn; |
| |
| si_write_tess_factors(bld_base, |
| LLVMGetParam(func, last_sgpr + 1), |
| LLVMGetParam(func, last_sgpr + 2), |
| LLVMGetParam(func, last_sgpr + 3)); |
| |
| LLVMBuildRetVoid(gallivm->builder); |
| } |
| |
| /** |
| * Select and compile (or reuse) TCS parts (epilog). |
| */ |
| static bool si_shader_select_tcs_parts(struct si_screen *sscreen, |
| LLVMTargetMachineRef tm, |
| struct si_shader *shader, |
| struct pipe_debug_callback *debug) |
| { |
| union si_shader_part_key epilog_key; |
| |
| /* Get the epilog. */ |
| memset(&epilog_key, 0, sizeof(epilog_key)); |
| epilog_key.tcs_epilog.states = shader->key.part.tcs.epilog; |
| |
| shader->epilog = si_get_shader_part(sscreen, &sscreen->tcs_epilogs, |
| PIPE_SHADER_TESS_CTRL, false, |
| &epilog_key, tm, debug, |
| si_build_tcs_epilog_function, |
| "Tessellation Control Shader Epilog"); |
| return shader->epilog != NULL; |
| } |
| |
| /** |
| * Select and compile (or reuse) GS parts (prolog). |
| */ |
| static bool si_shader_select_gs_parts(struct si_screen *sscreen, |
| LLVMTargetMachineRef tm, |
| struct si_shader *shader, |
| struct pipe_debug_callback *debug) |
| { |
| union si_shader_part_key prolog_key; |
| |
| if (!shader->key.part.gs.prolog.tri_strip_adj_fix) |
| return true; |
| |
| memset(&prolog_key, 0, sizeof(prolog_key)); |
| prolog_key.gs_prolog.states = shader->key.part.gs.prolog; |
| |
| shader->prolog = si_get_shader_part(sscreen, &sscreen->gs_prologs, |
| PIPE_SHADER_GEOMETRY, true, |
| &prolog_key, tm, debug, |
| si_build_gs_prolog_function, |
| "Geometry Shader Prolog"); |
| return shader->prolog != NULL; |
| } |
| |
| /** |
| * Build the pixel shader prolog function. This handles: |
| * - two-side color selection and interpolation |
| * - overriding interpolation parameters for the API PS |
| * - polygon stippling |
| * |
| * All preloaded SGPRs and VGPRs are passed through unmodified unless they are |
| * overriden by other states. (e.g. per-sample interpolation) |
| * Interpolated colors are stored after the preloaded VGPRs. |
| */ |
| static void si_build_ps_prolog_function(struct si_shader_context *ctx, |
| union si_shader_part_key *key) |
| { |
| struct gallivm_state *gallivm = &ctx->gallivm; |
| LLVMTypeRef *params; |
| LLVMValueRef ret, func; |
| int last_sgpr, num_params, num_returns, i, num_color_channels; |
| |
| assert(si_need_ps_prolog(key)); |
| |
| /* Number of inputs + 8 color elements. */ |
| params = alloca((key->ps_prolog.num_input_sgprs + |
| key->ps_prolog.num_input_vgprs + 8) * |
| sizeof(LLVMTypeRef)); |
| |
| /* Declare inputs. */ |
| num_params = 0; |
| for (i = 0; i < key->ps_prolog.num_input_sgprs; i++) |
| params[num_params++] = ctx->i32; |
| last_sgpr = num_params - 1; |
| |
| for (i = 0; i < key->ps_prolog.num_input_vgprs; i++) |
| params[num_params++] = ctx->f32; |
| |
| /* Declare outputs (same as inputs + add colors if needed) */ |
| num_returns = num_params; |
| num_color_channels = util_bitcount(key->ps_prolog.colors_read); |
| for (i = 0; i < num_color_channels; i++) |
| params[num_returns++] = ctx->f32; |
| |
| /* Create the function. */ |
| si_create_function(ctx, "ps_prolog", params, num_returns, params, |
| num_params, last_sgpr); |
| func = ctx->main_fn; |
| |
| /* Copy inputs to outputs. This should be no-op, as the registers match, |
| * but it will prevent the compiler from overwriting them unintentionally. |
| */ |
| ret = ctx->return_value; |
| for (i = 0; i < num_params; i++) { |
| LLVMValueRef p = LLVMGetParam(func, i); |
| ret = LLVMBuildInsertValue(gallivm->builder, ret, p, i, ""); |
| } |
| |
| /* Polygon stippling. */ |
| if (key->ps_prolog.states.poly_stipple) { |
| /* POS_FIXED_PT is always last. */ |
| unsigned pos = key->ps_prolog.num_input_sgprs + |
| key->ps_prolog.num_input_vgprs - 1; |
| LLVMValueRef ptr[2], list; |
| |
| /* Get the pointer to rw buffers. */ |
| ptr[0] = LLVMGetParam(func, SI_SGPR_RW_BUFFERS); |
| ptr[1] = LLVMGetParam(func, SI_SGPR_RW_BUFFERS_HI); |
| list = lp_build_gather_values(gallivm, ptr, 2); |
| list = LLVMBuildBitCast(gallivm->builder, list, ctx->i64, ""); |
| list = LLVMBuildIntToPtr(gallivm->builder, list, |
| const_array(ctx->v16i8, SI_NUM_RW_BUFFERS), ""); |
| |
| si_llvm_emit_polygon_stipple(ctx, list, pos); |
| } |
| |
| if (key->ps_prolog.states.bc_optimize_for_persp || |
| key->ps_prolog.states.bc_optimize_for_linear) { |
| unsigned i, base = key->ps_prolog.num_input_sgprs; |
| LLVMValueRef center[2], centroid[2], tmp, bc_optimize; |
| |
| /* The shader should do: if (PRIM_MASK[31]) CENTROID = CENTER; |
| * The hw doesn't compute CENTROID if the whole wave only |
| * contains fully-covered quads. |
| * |
| * PRIM_MASK is after user SGPRs. |
| */ |
| bc_optimize = LLVMGetParam(func, SI_PS_NUM_USER_SGPR); |
| bc_optimize = LLVMBuildLShr(gallivm->builder, bc_optimize, |
| LLVMConstInt(ctx->i32, 31, 0), ""); |
| bc_optimize = LLVMBuildTrunc(gallivm->builder, bc_optimize, |
| ctx->i1, ""); |
| |
| if (key->ps_prolog.states.bc_optimize_for_persp) { |
| /* Read PERSP_CENTER. */ |
| for (i = 0; i < 2; i++) |
| center[i] = LLVMGetParam(func, base + 2 + i); |
| /* Read PERSP_CENTROID. */ |
| for (i = 0; i < 2; i++) |
| centroid[i] = LLVMGetParam(func, base + 4 + i); |
| /* Select PERSP_CENTROID. */ |
| for (i = 0; i < 2; i++) { |
| tmp = LLVMBuildSelect(gallivm->builder, bc_optimize, |
| center[i], centroid[i], ""); |
| ret = LLVMBuildInsertValue(gallivm->builder, ret, |
| tmp, base + 4 + i, ""); |
| } |
| } |
| if (key->ps_prolog.states.bc_optimize_for_linear) { |
| /* Read LINEAR_CENTER. */ |
| for (i = 0; i < 2; i++) |
| center[i] = LLVMGetParam(func, base + 8 + i); |
| /* Read LINEAR_CENTROID. */ |
| for (i = 0; i < 2; i++) |
| centroid[i] = LLVMGetParam(func, base + 10 + i); |
| /* Select LINEAR_CENTROID. */ |
| for (i = 0; i < 2; i++) { |
| tmp = LLVMBuildSelect(gallivm->builder, bc_optimize, |
| center[i], centroid[i], ""); |
| ret = LLVMBuildInsertValue(gallivm->builder, ret, |
| tmp, base + 10 + i, ""); |
| } |
| } |
| } |
| |
| /* Force per-sample interpolation. */ |
| if (key->ps_prolog.states.force_persp_sample_interp) { |
| unsigned i, base = key->ps_prolog.num_input_sgprs; |
| LLVMValueRef persp_sample[2]; |
| |
| /* Read PERSP_SAMPLE. */ |
| for (i = 0; i < 2; i++) |
| persp_sample[i] = LLVMGetParam(func, base + i); |
| /* Overwrite PERSP_CENTER. */ |
| for (i = 0; i < 2; i++) |
| ret = LLVMBuildInsertValue(gallivm->builder, ret, |
| persp_sample[i], base + 2 + i, ""); |
| /* Overwrite PERSP_CENTROID. */ |
| for (i = 0; i < 2; i++) |
| ret = LLVMBuildInsertValue(gallivm->builder, ret, |
| persp_sample[i], base + 4 + i, ""); |
| } |
| if (key->ps_prolog.states.force_linear_sample_interp) { |
| unsigned i, base = key->ps_prolog.num_input_sgprs; |
| LLVMValueRef linear_sample[2]; |
| |
| /* Read LINEAR_SAMPLE. */ |
| for (i = 0; i < 2; i++) |
| linear_sample[i] = LLVMGetParam(func, base + 6 + i); |
| /* Overwrite LINEAR_CENTER. */ |
| for (i = 0; i < 2; i++) |
| ret = LLVMBuildInsertValue(gallivm->builder, ret, |
| linear_sample[i], base + 8 + i, ""); |
| /* Overwrite LINEAR_CENTROID. */ |
| for (i = 0; i < 2; i++) |
| ret = LLVMBuildInsertValue(gallivm->builder, ret, |
| linear_sample[i], base + 10 + i, ""); |
| } |
| |
| /* Force center interpolation. */ |
| if (key->ps_prolog.states.force_persp_center_interp) { |
| unsigned i, base = key->ps_prolog.num_input_sgprs; |
| LLVMValueRef persp_center[2]; |
| |
| /* Read PERSP_CENTER. */ |
| for (i = 0; i < 2; i++) |
| persp_center[i] = LLVMGetParam(func, base + 2 + i); |
| /* Overwrite PERSP_SAMPLE. */ |
| for (i = 0; i < 2; i++) |
| ret = LLVMBuildInsertValue(gallivm->builder, ret, |
| persp_center[i], base + i, ""); |
| /* Overwrite PERSP_CENTROID. */ |
| for (i = 0; i < 2; i++) |
| ret = LLVMBuildInsertValue(gallivm->builder, ret, |
| persp_center[i], base + 4 + i, ""); |
| } |
| if (key->ps_prolog.states.force_linear_center_interp) { |
| unsigned i, base = key->ps_prolog.num_input_sgprs; |
| LLVMValueRef linear_center[2]; |
| |
| /* Read LINEAR_CENTER. */ |
| for (i = 0; i < 2; i++) |
| linear_center[i] = LLVMGetParam(func, base + 8 + i); |
| /* Overwrite LINEAR_SAMPLE. */ |
| for (i = 0; i < 2; i++) |
| ret = LLVMBuildInsertValue(gallivm->builder, ret, |
| linear_center[i], base + 6 + i, ""); |
| /* Overwrite LINEAR_CENTROID. */ |
| for (i = 0; i < 2; i++) |
| ret = LLVMBuildInsertValue(gallivm->builder, ret, |
| linear_center[i], base + 10 + i, ""); |
| } |
| |
| /* Interpolate colors. */ |
| for (i = 0; i < 2; i++) { |
| unsigned writemask = (key->ps_prolog.colors_read >> (i * 4)) & 0xf; |
| unsigned face_vgpr = key->ps_prolog.num_input_sgprs + |
| key->ps_prolog.face_vgpr_index; |
| LLVMValueRef interp[2], color[4]; |
| LLVMValueRef interp_ij = NULL, prim_mask = NULL, face = NULL; |
| |
| if (!writemask) |
| continue; |
| |
| /* If the interpolation qualifier is not CONSTANT (-1). */ |
| if (key->ps_prolog.color_interp_vgpr_index[i] != -1) { |
| unsigned interp_vgpr = key->ps_prolog.num_input_sgprs + |
| key->ps_prolog.color_interp_vgpr_index[i]; |
| |
| /* Get the (i,j) updated by bc_optimize handling. */ |
| interp[0] = LLVMBuildExtractValue(gallivm->builder, ret, |
| interp_vgpr, ""); |
| interp[1] = LLVMBuildExtractValue(gallivm->builder, ret, |
| interp_vgpr + 1, ""); |
| interp_ij = lp_build_gather_values(gallivm, interp, 2); |
| } |
| |
| /* Use the absolute location of the input. */ |
| prim_mask = LLVMGetParam(func, SI_PS_NUM_USER_SGPR); |
| |
| if (key->ps_prolog.states.color_two_side) { |
| face = LLVMGetParam(func, face_vgpr); |
| face = LLVMBuildBitCast(gallivm->builder, face, ctx->i32, ""); |
| } |
| |
| interp_fs_input(ctx, |
| key->ps_prolog.color_attr_index[i], |
| TGSI_SEMANTIC_COLOR, i, |
| key->ps_prolog.num_interp_inputs, |
| key->ps_prolog.colors_read, interp_ij, |
| prim_mask, face, color); |
| |
| while (writemask) { |
| unsigned chan = u_bit_scan(&writemask); |
| ret = LLVMBuildInsertValue(gallivm->builder, ret, color[chan], |
| num_params++, ""); |
| } |
| } |
| |
| /* Tell LLVM to insert WQM instruction sequence when needed. */ |
| if (key->ps_prolog.wqm) { |
| LLVMAddTargetDependentFunctionAttr(func, |
| "amdgpu-ps-wqm-outputs", ""); |
| } |
| |
| si_llvm_build_ret(ctx, ret); |
| } |
| |
| /** |
| * Build the pixel shader epilog function. This handles everything that must be |
| * emulated for pixel shader exports. (alpha-test, format conversions, etc) |
| */ |
| static void si_build_ps_epilog_function(struct si_shader_context *ctx, |
| union si_shader_part_key *key) |
| { |
| struct gallivm_state *gallivm = &ctx->gallivm; |
| struct lp_build_tgsi_context *bld_base = &ctx->bld_base; |
| LLVMTypeRef params[16+8*4+3]; |
| LLVMValueRef depth = NULL, stencil = NULL, samplemask = NULL; |
| int last_sgpr, num_params, i; |
| struct si_ps_exports exp = {}; |
| |
| /* Declare input SGPRs. */ |
| params[SI_PARAM_RW_BUFFERS] = ctx->i64; |
| params[SI_PARAM_CONST_BUFFERS] = ctx->i64; |
| params[SI_PARAM_SAMPLERS] = ctx->i64; |
| params[SI_PARAM_IMAGES] = ctx->i64; |
| params[SI_PARAM_SHADER_BUFFERS] = ctx->i64; |
| params[SI_PARAM_ALPHA_REF] = ctx->f32; |
| last_sgpr = SI_PARAM_ALPHA_REF; |
| |
| /* Declare input VGPRs. */ |
| num_params = (last_sgpr + 1) + |
| util_bitcount(key->ps_epilog.colors_written) * 4 + |
| key->ps_epilog.writes_z + |
| key->ps_epilog.writes_stencil + |
| key->ps_epilog.writes_samplemask; |
| |
| num_params = MAX2(num_params, |
| last_sgpr + 1 + PS_EPILOG_SAMPLEMASK_MIN_LOC + 1); |
| |
| assert(num_params <= ARRAY_SIZE(params)); |
| |
| for (i = last_sgpr + 1; i < num_params; i++) |
| params[i] = ctx->f32; |
| |
| /* Create the function. */ |
| si_create_function(ctx, "ps_epilog", NULL, 0, params, num_params, last_sgpr); |
| /* Disable elimination of unused inputs. */ |
| si_llvm_add_attribute(ctx->main_fn, |
| "InitialPSInputAddr", 0xffffff); |
| |
| /* Process colors. */ |
| unsigned vgpr = last_sgpr + 1; |
| unsigned colors_written = key->ps_epilog.colors_written; |
| int last_color_export = -1; |
| |
| /* Find the last color export. */ |
| if (!key->ps_epilog.writes_z && |
| !key->ps_epilog.writes_stencil && |
| !key->ps_epilog.writes_samplemask) { |
| unsigned spi_format = key->ps_epilog.states.spi_shader_col_format; |
| |
| /* If last_cbuf > 0, FS_COLOR0_WRITES_ALL_CBUFS is true. */ |
| if (colors_written == 0x1 && key->ps_epilog.states.last_cbuf > 0) { |
| /* Just set this if any of the colorbuffers are enabled. */ |
| if (spi_format & |
| ((1llu << (4 * (key->ps_epilog.states.last_cbuf + 1))) - 1)) |
| last_color_export = 0; |
| } else { |
| for (i = 0; i < 8; i++) |
| if (colors_written & (1 << i) && |
| (spi_format >> (i * 4)) & 0xf) |
| last_color_export = i; |
| } |
| } |
| |
| while (colors_written) { |
| LLVMValueRef color[4]; |
| int mrt = u_bit_scan(&colors_written); |
| |
| for (i = 0; i < 4; i++) |
| color[i] = LLVMGetParam(ctx->main_fn, vgpr++); |
| |
| si_export_mrt_color(bld_base, color, mrt, |
| num_params - 1, |
| mrt == last_color_export, &exp); |
| } |
| |
| /* Process depth, stencil, samplemask. */ |
| if (key->ps_epilog.writes_z) |
| depth = LLVMGetParam(ctx->main_fn, vgpr++); |
| if (key->ps_epilog.writes_stencil) |
| stencil = LLVMGetParam(ctx->main_fn, vgpr++); |
| if (key->ps_epilog.writes_samplemask) |
| samplemask = LLVMGetParam(ctx->main_fn, vgpr++); |
| |
| if (depth || stencil || samplemask) |
| si_export_mrt_z(bld_base, depth, stencil, samplemask, &exp); |
| else if (last_color_export == -1) |
| si_export_null(bld_base); |
| |
| if (exp.num) |
| si_emit_ps_exports(ctx, &exp); |
| |
| /* Compile. */ |
| LLVMBuildRetVoid(gallivm->builder); |
| } |
| |
| /** |
| * Select and compile (or reuse) pixel shader parts (prolog & epilog). |
| */ |
| static bool si_shader_select_ps_parts(struct si_screen *sscreen, |
| LLVMTargetMachineRef tm, |
| struct si_shader *shader, |
| struct pipe_debug_callback *debug) |
| { |
| union si_shader_part_key prolog_key; |
| union si_shader_part_key epilog_key; |
| |
| /* Get the prolog. */ |
| si_get_ps_prolog_key(shader, &prolog_key, true); |
| |
| /* The prolog is a no-op if these aren't set. */ |
| if (si_need_ps_prolog(&prolog_key)) { |
| shader->prolog = |
| si_get_shader_part(sscreen, &sscreen->ps_prologs, |
| PIPE_SHADER_FRAGMENT, true, |
| &prolog_key, tm, debug, |
| si_build_ps_prolog_function, |
| "Fragment Shader Prolog"); |
| if (!shader->prolog) |
| return false; |
| } |
| |
| /* Get the epilog. */ |
| si_get_ps_epilog_key(shader, &epilog_key); |
| |
| shader->epilog = |
| si_get_shader_part(sscreen, &sscreen->ps_epilogs, |
| PIPE_SHADER_FRAGMENT, false, |
| &epilog_key, tm, debug, |
| si_build_ps_epilog_function, |
| "Fragment Shader Epilog"); |
| if (!shader->epilog) |
| return false; |
| |
| /* Enable POS_FIXED_PT if polygon stippling is enabled. */ |
| if (shader->key.part.ps.prolog.poly_stipple) { |
| shader->config.spi_ps_input_ena |= S_0286CC_POS_FIXED_PT_ENA(1); |
| assert(G_0286CC_POS_FIXED_PT_ENA(shader->config.spi_ps_input_addr)); |
| } |
| |
| /* Set up the enable bits for per-sample shading if needed. */ |
| if (shader->key.part.ps.prolog.force_persp_sample_interp && |
| (G_0286CC_PERSP_CENTER_ENA(shader->config.spi_ps_input_ena) || |
| G_0286CC_PERSP_CENTROID_ENA(shader->config.spi_ps_input_ena))) { |
| shader->config.spi_ps_input_ena &= C_0286CC_PERSP_CENTER_ENA; |
| shader->config.spi_ps_input_ena &= C_0286CC_PERSP_CENTROID_ENA; |
| shader->config.spi_ps_input_ena |= S_0286CC_PERSP_SAMPLE_ENA(1); |
| } |
| if (shader->key.part.ps.prolog.force_linear_sample_interp && |
| (G_0286CC_LINEAR_CENTER_ENA(shader->config.spi_ps_input_ena) || |
| G_0286CC_LINEAR_CENTROID_ENA(shader->config.spi_ps_input_ena))) { |
| shader->config.spi_ps_input_ena &= C_0286CC_LINEAR_CENTER_ENA; |
| shader->config.spi_ps_input_ena &= C_0286CC_LINEAR_CENTROID_ENA; |
| shader->config.spi_ps_input_ena |= S_0286CC_LINEAR_SAMPLE_ENA(1); |
| } |
| if (shader->key.part.ps.prolog.force_persp_center_interp && |
| (G_0286CC_PERSP_SAMPLE_ENA(shader->config.spi_ps_input_ena) || |
| G_0286CC_PERSP_CENTROID_ENA(shader->config.spi_ps_input_ena))) { |
| shader->config.spi_ps_input_ena &= C_0286CC_PERSP_SAMPLE_ENA; |
| shader->config.spi_ps_input_ena &= C_0286CC_PERSP_CENTROID_ENA; |
| shader->config.spi_ps_input_ena |= S_0286CC_PERSP_CENTER_ENA(1); |
| } |
| if (shader->key.part.ps.prolog.force_linear_center_interp && |
| (G_0286CC_LINEAR_SAMPLE_ENA(shader->config.spi_ps_input_ena) || |
| G_0286CC_LINEAR_CENTROID_ENA(shader->config.spi_ps_input_ena))) { |
| shader->config.spi_ps_input_ena &= C_0286CC_LINEAR_SAMPLE_ENA; |
| shader->config.spi_ps_input_ena &= C_0286CC_LINEAR_CENTROID_ENA; |
| shader->config.spi_ps_input_ena |= S_0286CC_LINEAR_CENTER_ENA(1); |
| } |
| |
| /* POW_W_FLOAT requires that one of the perspective weights is enabled. */ |
| if (G_0286CC_POS_W_FLOAT_ENA(shader->config.spi_ps_input_ena) && |
| !(shader->config.spi_ps_input_ena & 0xf)) { |
| shader->config.spi_ps_input_ena |= S_0286CC_PERSP_CENTER_ENA(1); |
| assert(G_0286CC_PERSP_CENTER_ENA(shader->config.spi_ps_input_addr)); |
| } |
| |
| /* At least one pair of interpolation weights must be enabled. */ |
| if (!(shader->config.spi_ps_input_ena & 0x7f)) { |
| shader->config.spi_ps_input_ena |= S_0286CC_LINEAR_CENTER_ENA(1); |
| assert(G_0286CC_LINEAR_CENTER_ENA(shader->config.spi_ps_input_addr)); |
| } |
| |
| /* The sample mask input is always enabled, because the API shader always |
| * passes it through to the epilog. Disable it here if it's unused. |
| */ |
| if (!shader->key.part.ps.epilog.poly_line_smoothing && |
| !shader->selector->info.reads_samplemask) |
| shader->config.spi_ps_input_ena &= C_0286CC_SAMPLE_COVERAGE_ENA; |
| |
| return true; |
| } |
| |
| void si_multiwave_lds_size_workaround(struct si_screen *sscreen, |
| unsigned *lds_size) |
| { |
| /* SPI barrier management bug: |
| * Make sure we have at least 4k of LDS in use to avoid the bug. |
| * It applies to workgroup sizes of more than one wavefront. |
| */ |
| if (sscreen->b.family == CHIP_BONAIRE || |
| sscreen->b.family == CHIP_KABINI || |
| sscreen->b.family == CHIP_MULLINS) |
| *lds_size = MAX2(*lds_size, 8); |
| } |
| |
| static void si_fix_resource_usage(struct si_screen *sscreen, |
| struct si_shader *shader) |
| { |
| unsigned min_sgprs = shader->info.num_input_sgprs + 2; /* VCC */ |
| |
| shader->config.num_sgprs = MAX2(shader->config.num_sgprs, min_sgprs); |
| |
| if (shader->selector->type == PIPE_SHADER_COMPUTE && |
| si_get_max_workgroup_size(shader) > 64) { |
| si_multiwave_lds_size_workaround(sscreen, |
| &shader->config.lds_size); |
| } |
| } |
| |
| int si_shader_create(struct si_screen *sscreen, LLVMTargetMachineRef tm, |
| struct si_shader *shader, |
| struct pipe_debug_callback *debug) |
| { |
| struct si_shader_selector *sel = shader->selector; |
| struct si_shader *mainp = sel->main_shader_part; |
| int r; |
| |
| /* LS, ES, VS are compiled on demand if the main part hasn't been |
| * compiled for that stage. |
| * |
| * Vertex shaders are compiled on demand when a vertex fetch |
| * workaround must be applied. |
| */ |
| if (shader->is_monolithic) { |
| /* Monolithic shader (compiled as a whole, has many variants, |
| * may take a long time to compile). |
| */ |
| r = si_compile_tgsi_shader(sscreen, tm, shader, true, debug); |
| if (r) |
| return r; |
| } else { |
| /* The shader consists of 2-3 parts: |
| * |
| * - the middle part is the user shader, it has 1 variant only |
| * and it was compiled during the creation of the shader |
| * selector |
| * - the prolog part is inserted at the beginning |
| * - the epilog part is inserted at the end |
| * |
| * The prolog and epilog have many (but simple) variants. |
| */ |
| |
| /* Copy the compiled TGSI shader data over. */ |
| shader->is_binary_shared = true; |
| shader->binary = mainp->binary; |
| shader->config = mainp->config; |
| shader->info.num_input_sgprs = mainp->info.num_input_sgprs; |
| shader->info.num_input_vgprs = mainp->info.num_input_vgprs; |
| shader->info.face_vgpr_index = mainp->info.face_vgpr_index; |
| memcpy(shader->info.vs_output_param_offset, |
| mainp->info.vs_output_param_offset, |
| sizeof(mainp->info.vs_output_param_offset)); |
| shader->info.uses_instanceid = mainp->info.uses_instanceid; |
| shader->info.nr_pos_exports = mainp->info.nr_pos_exports; |
| shader->info.nr_param_exports = mainp->info.nr_param_exports; |
| |
| /* Select prologs and/or epilogs. */ |
| switch (sel->type) { |
| case PIPE_SHADER_VERTEX: |
| if (!si_shader_select_vs_parts(sscreen, tm, shader, debug)) |
| return -1; |
| break; |
| case PIPE_SHADER_TESS_CTRL: |
| if (!si_shader_select_tcs_parts(sscreen, tm, shader, debug)) |
| return -1; |
| break; |
| case PIPE_SHADER_TESS_EVAL: |
| if (!si_shader_select_tes_parts(sscreen, tm, shader, debug)) |
| return -1; |
| break; |
| case PIPE_SHADER_GEOMETRY: |
| if (!si_shader_select_gs_parts(sscreen, tm, shader, debug)) |
| return -1; |
| break; |
| case PIPE_SHADER_FRAGMENT: |
| if (!si_shader_select_ps_parts(sscreen, tm, shader, debug)) |
| return -1; |
| |
| /* Make sure we have at least as many VGPRs as there |
| * are allocated inputs. |
| */ |
| shader->config.num_vgprs = MAX2(shader->config.num_vgprs, |
| shader->info.num_input_vgprs); |
| break; |
| } |
| |
| /* Update SGPR and VGPR counts. */ |
| if (shader->prolog) { |
| shader->config.num_sgprs = MAX2(shader->config.num_sgprs, |
| shader->prolog->config.num_sgprs); |
| shader->config.num_vgprs = MAX2(shader->config.num_vgprs, |
| shader->prolog->config.num_vgprs); |
| } |
| if (shader->epilog) { |
| shader->config.num_sgprs = MAX2(shader->config.num_sgprs, |
| shader->epilog->config.num_sgprs); |
| shader->config.num_vgprs = MAX2(shader->config.num_vgprs, |
| shader->epilog->config.num_vgprs); |
| } |
| } |
| |
| si_fix_resource_usage(sscreen, shader); |
| si_shader_dump(sscreen, shader, debug, sel->info.processor, |
| stderr, true); |
| |
| /* Upload. */ |
| r = si_shader_binary_upload(sscreen, shader); |
| if (r) { |
| fprintf(stderr, "LLVM failed to upload shader\n"); |
| return r; |
| } |
| |
| return 0; |
| } |
| |
| void si_shader_destroy(struct si_shader *shader) |
| { |
| if (shader->scratch_bo) |
| r600_resource_reference(&shader->scratch_bo, NULL); |
| |
| r600_resource_reference(&shader->bo, NULL); |
| |
| if (!shader->is_binary_shared) |
| radeon_shader_binary_clean(&shader->binary); |
| |
| free(shader->shader_log); |
| } |