| /* |
| * Copyright (C) 2020 Collabora Ltd. |
| * |
| * 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, sublicense, |
| * 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 NONINFRINGEMENT. IN NO EVENT SHALL |
| * THE AUTHORS OR COPYRIGHT HOLDERS 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 (Collabora): |
| * Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com> |
| */ |
| |
| #include "pan_ir.h" |
| |
| /* TODO: ssbo_size */ |
| static int |
| panfrost_sysval_for_ssbo(nir_intrinsic_instr *instr) |
| { |
| nir_src index = instr->src[0]; |
| assert(nir_src_is_const(index)); |
| uint32_t uindex = nir_src_as_uint(index); |
| |
| return PAN_SYSVAL(SSBO, uindex); |
| } |
| |
| static int |
| panfrost_sysval_for_sampler(nir_intrinsic_instr *instr) |
| { |
| /* TODO: indirect samplers !!! */ |
| nir_src index = instr->src[0]; |
| assert(nir_src_is_const(index)); |
| uint32_t uindex = nir_src_as_uint(index); |
| |
| return PAN_SYSVAL(SAMPLER, uindex); |
| } |
| |
| static unsigned |
| panfrost_nir_sysval_for_intrinsic(nir_intrinsic_instr *instr) |
| { |
| switch (instr->intrinsic) { |
| case nir_intrinsic_load_viewport_scale: |
| return PAN_SYSVAL_VIEWPORT_SCALE; |
| case nir_intrinsic_load_viewport_offset: |
| return PAN_SYSVAL_VIEWPORT_OFFSET; |
| case nir_intrinsic_load_num_work_groups: |
| return PAN_SYSVAL_NUM_WORK_GROUPS; |
| case nir_intrinsic_load_ssbo_address: |
| case nir_intrinsic_get_ssbo_size: |
| return panfrost_sysval_for_ssbo(instr); |
| case nir_intrinsic_load_sampler_lod_parameters_pan: |
| return panfrost_sysval_for_sampler(instr); |
| default: |
| return ~0; |
| } |
| } |
| |
| int |
| panfrost_sysval_for_instr(nir_instr *instr, nir_dest *dest) |
| { |
| nir_intrinsic_instr *intr; |
| nir_dest *dst = NULL; |
| nir_tex_instr *tex; |
| unsigned sysval = ~0; |
| |
| switch (instr->type) { |
| case nir_instr_type_intrinsic: |
| intr = nir_instr_as_intrinsic(instr); |
| sysval = panfrost_nir_sysval_for_intrinsic(intr); |
| dst = &intr->dest; |
| break; |
| case nir_instr_type_tex: |
| tex = nir_instr_as_tex(instr); |
| if (tex->op != nir_texop_txs) |
| break; |
| |
| sysval = PAN_SYSVAL(TEXTURE_SIZE, |
| PAN_TXS_SYSVAL_ID(tex->texture_index, |
| nir_tex_instr_dest_size(tex) - |
| (tex->is_array ? 1 : 0), |
| tex->is_array)); |
| dst = &tex->dest; |
| break; |
| default: |
| break; |
| } |
| |
| if (dest && dst) |
| *dest = *dst; |
| |
| return sysval; |
| } |
| |
| static void |
| panfrost_nir_assign_sysval_body(struct panfrost_sysvals *ctx, nir_instr *instr) |
| { |
| int sysval = panfrost_sysval_for_instr(instr, NULL); |
| if (sysval < 0) |
| return; |
| |
| /* We have a sysval load; check if it's already been assigned */ |
| |
| if (_mesa_hash_table_u64_search(ctx->sysval_to_id, sysval)) |
| return; |
| |
| /* It hasn't -- so assign it now! */ |
| |
| unsigned id = ctx->sysval_count++; |
| _mesa_hash_table_u64_insert(ctx->sysval_to_id, sysval, (void *) ((uintptr_t) id + 1)); |
| ctx->sysvals[id] = sysval; |
| } |
| |
| void |
| panfrost_nir_assign_sysvals(struct panfrost_sysvals *ctx, void *memctx, nir_shader *shader) |
| { |
| ctx->sysval_count = 0; |
| ctx->sysval_to_id = _mesa_hash_table_u64_create(memctx); |
| |
| nir_foreach_function(function, shader) { |
| if (!function->impl) continue; |
| |
| nir_foreach_block(block, function->impl) { |
| nir_foreach_instr_safe(instr, block) { |
| panfrost_nir_assign_sysval_body(ctx, instr); |
| } |
| } |
| } |
| } |