| /************************************************************************** |
| * |
| * Copyright 2009 VMware, Inc. |
| * All rights reserved. |
| * |
| * 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 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 VMWARE AND/OR ITS 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. |
| * |
| **************************************************************************/ |
| |
| /** |
| * Largely a copy of llvmpipe's lp_tex_sample.c |
| */ |
| |
| /** |
| * Texture sampling code generation |
| * |
| * This file is nothing more than ugly glue between three largely independent |
| * entities: |
| * - TGSI -> LLVM translation (i.e., lp_build_tgsi_soa) |
| * - texture sampling code generation (i.e., lp_build_sample_soa) |
| * - SWR driver |
| * |
| * All interesting code is in the functions mentioned above. There is really |
| * nothing to see here. |
| * |
| * @author Jose Fonseca <jfonseca@vmware.com> |
| */ |
| |
| #include "state.h" |
| #include "JitManager.h" |
| #include "gen_state_llvm.h" |
| |
| #include "pipe/p_defines.h" |
| #include "pipe/p_shader_tokens.h" |
| #include "gallivm/lp_bld_debug.h" |
| #include "gallivm/lp_bld_const.h" |
| #include "gallivm/lp_bld_type.h" |
| #include "gallivm/lp_bld_sample.h" |
| #include "gallivm/lp_bld_tgsi.h" |
| #include "util/u_memory.h" |
| |
| #include "swr_tex_sample.h" |
| #include "gen_swr_context_llvm.h" |
| |
| using namespace SwrJit; |
| |
| /** |
| * This provides the bridge between the sampler state store in |
| * lp_jit_context and lp_jit_texture and the sampler code |
| * generator. It provides the texture layout information required by |
| * the texture sampler code generator in terms of the state stored in |
| * lp_jit_context and lp_jit_texture in runtime. |
| */ |
| struct swr_sampler_dynamic_state { |
| struct lp_sampler_dynamic_state base; |
| |
| const struct swr_sampler_static_state *static_state; |
| |
| enum pipe_shader_type shader_type; |
| }; |
| |
| |
| /** |
| * This is the bridge between our sampler and the TGSI translator. |
| */ |
| struct swr_sampler_soa { |
| struct lp_build_sampler_soa base; |
| |
| struct swr_sampler_dynamic_state dynamic_state; |
| }; |
| |
| |
| /** |
| * Fetch the specified member of the lp_jit_texture structure. |
| * \param emit_load if TRUE, emit the LLVM load instruction to actually |
| * fetch the field's value. Otherwise, just emit the |
| * GEP code to address the field. |
| * |
| * @sa http://llvm.org/docs/GetElementPtr.html |
| */ |
| static LLVMValueRef |
| swr_texture_member(const struct lp_sampler_dynamic_state *base, |
| struct gallivm_state *gallivm, |
| LLVMValueRef context_ptr, |
| unsigned texture_unit, |
| unsigned member_index, |
| const char *member_name, |
| boolean emit_load) |
| { |
| LLVMBuilderRef builder = gallivm->builder; |
| LLVMValueRef indices[4]; |
| LLVMValueRef ptr; |
| LLVMValueRef res; |
| |
| assert(texture_unit < PIPE_MAX_SHADER_SAMPLER_VIEWS); |
| |
| /* context[0] */ |
| indices[0] = lp_build_const_int32(gallivm, 0); |
| /* context[0].textures */ |
| auto dynamic = (const struct swr_sampler_dynamic_state *)base; |
| switch (dynamic->shader_type) { |
| case PIPE_SHADER_FRAGMENT: |
| indices[1] = lp_build_const_int32(gallivm, swr_draw_context_texturesFS); |
| break; |
| case PIPE_SHADER_VERTEX: |
| indices[1] = lp_build_const_int32(gallivm, swr_draw_context_texturesVS); |
| break; |
| case PIPE_SHADER_GEOMETRY: |
| indices[1] = lp_build_const_int32(gallivm, swr_draw_context_texturesGS); |
| break; |
| default: |
| assert(0 && "unsupported shader type"); |
| break; |
| } |
| /* context[0].textures[unit] */ |
| indices[2] = lp_build_const_int32(gallivm, texture_unit); |
| /* context[0].textures[unit].member */ |
| indices[3] = lp_build_const_int32(gallivm, member_index); |
| |
| ptr = LLVMBuildGEP(builder, context_ptr, indices, ARRAY_SIZE(indices), ""); |
| |
| if (emit_load) |
| res = LLVMBuildLoad(builder, ptr, ""); |
| else |
| res = ptr; |
| |
| lp_build_name(res, "context.texture%u.%s", texture_unit, member_name); |
| |
| return res; |
| } |
| |
| |
| /** |
| * Helper macro to instantiate the functions that generate the code to |
| * fetch the members of lp_jit_texture to fulfill the sampler code |
| * generator requests. |
| * |
| * This complexity is the price we have to pay to keep the texture |
| * sampler code generator a reusable module without dependencies to |
| * swr internals. |
| */ |
| #define SWR_TEXTURE_MEMBER(_name, _emit_load) \ |
| static LLVMValueRef swr_texture_##_name( \ |
| const struct lp_sampler_dynamic_state *base, \ |
| struct gallivm_state *gallivm, \ |
| LLVMValueRef context_ptr, \ |
| unsigned texture_unit) \ |
| { \ |
| return swr_texture_member(base, \ |
| gallivm, \ |
| context_ptr, \ |
| texture_unit, \ |
| swr_jit_texture_##_name, \ |
| #_name, \ |
| _emit_load); \ |
| } |
| |
| |
| SWR_TEXTURE_MEMBER(width, TRUE) |
| SWR_TEXTURE_MEMBER(height, TRUE) |
| SWR_TEXTURE_MEMBER(depth, TRUE) |
| SWR_TEXTURE_MEMBER(first_level, TRUE) |
| SWR_TEXTURE_MEMBER(last_level, TRUE) |
| SWR_TEXTURE_MEMBER(base_ptr, TRUE) |
| SWR_TEXTURE_MEMBER(row_stride, FALSE) |
| SWR_TEXTURE_MEMBER(img_stride, FALSE) |
| SWR_TEXTURE_MEMBER(mip_offsets, FALSE) |
| |
| |
| /** |
| * Fetch the specified member of the lp_jit_sampler structure. |
| * \param emit_load if TRUE, emit the LLVM load instruction to actually |
| * fetch the field's value. Otherwise, just emit the |
| * GEP code to address the field. |
| * |
| * @sa http://llvm.org/docs/GetElementPtr.html |
| */ |
| static LLVMValueRef |
| swr_sampler_member(const struct lp_sampler_dynamic_state *base, |
| struct gallivm_state *gallivm, |
| LLVMValueRef context_ptr, |
| unsigned sampler_unit, |
| unsigned member_index, |
| const char *member_name, |
| boolean emit_load) |
| { |
| LLVMBuilderRef builder = gallivm->builder; |
| LLVMValueRef indices[4]; |
| LLVMValueRef ptr; |
| LLVMValueRef res; |
| |
| assert(sampler_unit < PIPE_MAX_SAMPLERS); |
| |
| /* context[0] */ |
| indices[0] = lp_build_const_int32(gallivm, 0); |
| /* context[0].samplers */ |
| auto dynamic = (const struct swr_sampler_dynamic_state *)base; |
| switch (dynamic->shader_type) { |
| case PIPE_SHADER_FRAGMENT: |
| indices[1] = lp_build_const_int32(gallivm, swr_draw_context_samplersFS); |
| break; |
| case PIPE_SHADER_VERTEX: |
| indices[1] = lp_build_const_int32(gallivm, swr_draw_context_samplersVS); |
| break; |
| case PIPE_SHADER_GEOMETRY: |
| indices[1] = lp_build_const_int32(gallivm, swr_draw_context_samplersGS); |
| break; |
| default: |
| assert(0 && "unsupported shader type"); |
| break; |
| } |
| /* context[0].samplers[unit] */ |
| indices[2] = lp_build_const_int32(gallivm, sampler_unit); |
| /* context[0].samplers[unit].member */ |
| indices[3] = lp_build_const_int32(gallivm, member_index); |
| |
| ptr = LLVMBuildGEP(builder, context_ptr, indices, ARRAY_SIZE(indices), ""); |
| |
| if (emit_load) |
| res = LLVMBuildLoad(builder, ptr, ""); |
| else |
| res = ptr; |
| |
| lp_build_name(res, "context.sampler%u.%s", sampler_unit, member_name); |
| |
| return res; |
| } |
| |
| |
| #define SWR_SAMPLER_MEMBER(_name, _emit_load) \ |
| static LLVMValueRef swr_sampler_##_name( \ |
| const struct lp_sampler_dynamic_state *base, \ |
| struct gallivm_state *gallivm, \ |
| LLVMValueRef context_ptr, \ |
| unsigned sampler_unit) \ |
| { \ |
| return swr_sampler_member(base, \ |
| gallivm, \ |
| context_ptr, \ |
| sampler_unit, \ |
| swr_jit_sampler_##_name, \ |
| #_name, \ |
| _emit_load); \ |
| } |
| |
| |
| SWR_SAMPLER_MEMBER(min_lod, TRUE) |
| SWR_SAMPLER_MEMBER(max_lod, TRUE) |
| SWR_SAMPLER_MEMBER(lod_bias, TRUE) |
| SWR_SAMPLER_MEMBER(border_color, FALSE) |
| |
| |
| static void |
| swr_sampler_soa_destroy(struct lp_build_sampler_soa *sampler) |
| { |
| FREE(sampler); |
| } |
| |
| |
| /** |
| * Fetch filtered values from texture. |
| * The 'texel' parameter returns four vectors corresponding to R, G, B, A. |
| */ |
| static void |
| swr_sampler_soa_emit_fetch_texel(const struct lp_build_sampler_soa *base, |
| struct gallivm_state *gallivm, |
| const struct lp_sampler_params *params) |
| { |
| struct swr_sampler_soa *sampler = (struct swr_sampler_soa *)base; |
| unsigned texture_index = params->texture_index; |
| unsigned sampler_index = params->sampler_index; |
| |
| assert(sampler_index < PIPE_MAX_SAMPLERS); |
| assert(texture_index < PIPE_MAX_SHADER_SAMPLER_VIEWS); |
| |
| #if 0 |
| lp_build_sample_nop(gallivm, params->type, params->coords, params->texel); |
| #else |
| lp_build_sample_soa( |
| &sampler->dynamic_state.static_state[texture_index].texture_state, |
| &sampler->dynamic_state.static_state[sampler_index].sampler_state, |
| &sampler->dynamic_state.base, |
| gallivm, |
| params); |
| #endif |
| } |
| |
| /** |
| * Fetch the texture size. |
| */ |
| static void |
| swr_sampler_soa_emit_size_query(const struct lp_build_sampler_soa *base, |
| struct gallivm_state *gallivm, |
| const struct lp_sampler_size_query_params *params) |
| { |
| struct swr_sampler_soa *sampler = (struct swr_sampler_soa *)base; |
| |
| assert(params->texture_unit < PIPE_MAX_SHADER_SAMPLER_VIEWS); |
| |
| lp_build_size_query_soa( |
| gallivm, |
| &sampler->dynamic_state.static_state[params->texture_unit].texture_state, |
| &sampler->dynamic_state.base, |
| params); |
| } |
| |
| |
| struct lp_build_sampler_soa * |
| swr_sampler_soa_create(const struct swr_sampler_static_state *static_state, |
| enum pipe_shader_type shader_type) |
| { |
| struct swr_sampler_soa *sampler; |
| |
| sampler = CALLOC_STRUCT(swr_sampler_soa); |
| if (!sampler) |
| return NULL; |
| |
| sampler->base.destroy = swr_sampler_soa_destroy; |
| sampler->base.emit_tex_sample = swr_sampler_soa_emit_fetch_texel; |
| sampler->base.emit_size_query = swr_sampler_soa_emit_size_query; |
| sampler->dynamic_state.base.width = swr_texture_width; |
| sampler->dynamic_state.base.height = swr_texture_height; |
| sampler->dynamic_state.base.depth = swr_texture_depth; |
| sampler->dynamic_state.base.first_level = swr_texture_first_level; |
| sampler->dynamic_state.base.last_level = swr_texture_last_level; |
| sampler->dynamic_state.base.base_ptr = swr_texture_base_ptr; |
| sampler->dynamic_state.base.row_stride = swr_texture_row_stride; |
| sampler->dynamic_state.base.img_stride = swr_texture_img_stride; |
| sampler->dynamic_state.base.mip_offsets = swr_texture_mip_offsets; |
| sampler->dynamic_state.base.min_lod = swr_sampler_min_lod; |
| sampler->dynamic_state.base.max_lod = swr_sampler_max_lod; |
| sampler->dynamic_state.base.lod_bias = swr_sampler_lod_bias; |
| sampler->dynamic_state.base.border_color = swr_sampler_border_color; |
| |
| sampler->dynamic_state.static_state = static_state; |
| |
| sampler->dynamic_state.shader_type = shader_type; |
| |
| return &sampler->base; |
| } |