diff options
Diffstat (limited to 'src/glsl/nir/nir_lower_atomics.c')
| -rw-r--r-- | src/glsl/nir/nir_lower_atomics.c | 167 |
1 files changed, 0 insertions, 167 deletions
diff --git a/src/glsl/nir/nir_lower_atomics.c b/src/glsl/nir/nir_lower_atomics.c deleted file mode 100644 index a9d0ddbbd41..00000000000 --- a/src/glsl/nir/nir_lower_atomics.c +++ /dev/null @@ -1,167 +0,0 @@ -/* - * Copyright © 2014 Intel Corporation - * - * 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: - * Connor Abbott ([email protected]) - * - */ - -#include "ir_uniform.h" -#include "nir.h" -#include "main/config.h" -#include <assert.h> - -typedef struct { - const struct gl_shader_program *shader_program; - nir_shader *shader; -} lower_atomic_state; - -/* - * replace atomic counter intrinsics that use a variable with intrinsics - * that directly store the buffer index and byte offset - */ - -static void -lower_instr(nir_intrinsic_instr *instr, - lower_atomic_state *state) -{ - nir_intrinsic_op op; - switch (instr->intrinsic) { - case nir_intrinsic_atomic_counter_read_var: - op = nir_intrinsic_atomic_counter_read; - break; - - case nir_intrinsic_atomic_counter_inc_var: - op = nir_intrinsic_atomic_counter_inc; - break; - - case nir_intrinsic_atomic_counter_dec_var: - op = nir_intrinsic_atomic_counter_dec; - break; - - default: - return; - } - - if (instr->variables[0]->var->data.mode != nir_var_uniform && - instr->variables[0]->var->data.mode != nir_var_shader_storage && - instr->variables[0]->var->data.mode != nir_var_shared) - return; /* atomics passed as function arguments can't be lowered */ - - void *mem_ctx = ralloc_parent(instr); - unsigned uniform_loc = instr->variables[0]->var->data.location; - - nir_intrinsic_instr *new_instr = nir_intrinsic_instr_create(mem_ctx, op); - new_instr->const_index[0] = - state->shader_program->UniformStorage[uniform_loc].opaque[state->shader->stage].index; - - nir_load_const_instr *offset_const = nir_load_const_instr_create(mem_ctx, 1); - offset_const->value.u[0] = instr->variables[0]->var->data.offset; - - nir_instr_insert_before(&instr->instr, &offset_const->instr); - - nir_ssa_def *offset_def = &offset_const->def; - - nir_deref *tail = &instr->variables[0]->deref; - while (tail->child != NULL) { - assert(tail->child->deref_type == nir_deref_type_array); - nir_deref_array *deref_array = nir_deref_as_array(tail->child); - tail = tail->child; - - unsigned child_array_elements = tail->child != NULL ? - glsl_get_aoa_size(tail->type) : 1; - - offset_const->value.u[0] += deref_array->base_offset * - child_array_elements * ATOMIC_COUNTER_SIZE; - - if (deref_array->deref_array_type == nir_deref_array_type_indirect) { - nir_load_const_instr *atomic_counter_size = - nir_load_const_instr_create(mem_ctx, 1); - atomic_counter_size->value.u[0] = child_array_elements * ATOMIC_COUNTER_SIZE; - nir_instr_insert_before(&instr->instr, &atomic_counter_size->instr); - - nir_alu_instr *mul = nir_alu_instr_create(mem_ctx, nir_op_imul); - nir_ssa_dest_init(&mul->instr, &mul->dest.dest, 1, NULL); - mul->dest.write_mask = 0x1; - nir_src_copy(&mul->src[0].src, &deref_array->indirect, mul); - mul->src[1].src.is_ssa = true; - mul->src[1].src.ssa = &atomic_counter_size->def; - nir_instr_insert_before(&instr->instr, &mul->instr); - - nir_alu_instr *add = nir_alu_instr_create(mem_ctx, nir_op_iadd); - nir_ssa_dest_init(&add->instr, &add->dest.dest, 1, NULL); - add->dest.write_mask = 0x1; - add->src[0].src.is_ssa = true; - add->src[0].src.ssa = &mul->dest.dest.ssa; - add->src[1].src.is_ssa = true; - add->src[1].src.ssa = offset_def; - nir_instr_insert_before(&instr->instr, &add->instr); - - offset_def = &add->dest.dest.ssa; - } - } - - new_instr->src[0].is_ssa = true; - new_instr->src[0].ssa = offset_def; - - if (instr->dest.is_ssa) { - nir_ssa_dest_init(&new_instr->instr, &new_instr->dest, - instr->dest.ssa.num_components, NULL); - nir_ssa_def_rewrite_uses(&instr->dest.ssa, - nir_src_for_ssa(&new_instr->dest.ssa)); - } else { - nir_dest_copy(&new_instr->dest, &instr->dest, mem_ctx); - } - - nir_instr_insert_before(&instr->instr, &new_instr->instr); - nir_instr_remove(&instr->instr); -} - -static bool -lower_block(nir_block *block, void *state) -{ - nir_foreach_instr_safe(block, instr) { - if (instr->type == nir_instr_type_intrinsic) - lower_instr(nir_instr_as_intrinsic(instr), - (lower_atomic_state *) state); - } - - return true; -} - -void -nir_lower_atomics(nir_shader *shader, - const struct gl_shader_program *shader_program) -{ - lower_atomic_state state = { - .shader = shader, - .shader_program = shader_program, - }; - - nir_foreach_function(shader, function) { - if (function->impl) { - nir_foreach_block(function->impl, lower_block, (void *) &state); - nir_metadata_preserve(function->impl, nir_metadata_block_index | - nir_metadata_dominance); - } - } -} |