| /* |
| * Copyright © 2019 Red Hat 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 |
| * 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. |
| */ |
| |
| /** |
| * \file |
| * |
| * Lower image operations by turning the image_deref_* into a image_* on an |
| * index number or bindless_image_* intrinsic on a load_deref of the previous |
| * deref source. All applicable indicies are also set so that fetching the |
| * variable in the backend wouldn't be needed anymore. |
| */ |
| |
| #include "compiler/nir/nir.h" |
| #include "compiler/nir/nir_builder.h" |
| #include "compiler/nir/nir_deref.h" |
| |
| #include "compiler/glsl/gl_nir.h" |
| |
| static void |
| type_size_align_1(const struct glsl_type *type, unsigned *size, unsigned *align) |
| { |
| unsigned s; |
| |
| if (glsl_type_is_array(type)) |
| s = glsl_get_aoa_size(type); |
| else |
| s = 1; |
| |
| *size = s; |
| *align = s; |
| } |
| |
| static bool |
| lower_impl(nir_builder *b, nir_instr *instr, bool bindless_only) |
| { |
| if (instr->type != nir_instr_type_intrinsic) |
| return false; |
| |
| nir_intrinsic_instr *intrinsic = nir_instr_as_intrinsic(instr); |
| |
| nir_deref_instr *deref; |
| nir_variable *var; |
| |
| switch (intrinsic->intrinsic) { |
| case nir_intrinsic_image_deref_atomic_add: |
| case nir_intrinsic_image_deref_atomic_imin: |
| case nir_intrinsic_image_deref_atomic_umin: |
| case nir_intrinsic_image_deref_atomic_imax: |
| case nir_intrinsic_image_deref_atomic_umax: |
| case nir_intrinsic_image_deref_atomic_and: |
| case nir_intrinsic_image_deref_atomic_or: |
| case nir_intrinsic_image_deref_atomic_xor: |
| case nir_intrinsic_image_deref_atomic_exchange: |
| case nir_intrinsic_image_deref_atomic_comp_swap: |
| case nir_intrinsic_image_deref_atomic_fadd: |
| case nir_intrinsic_image_deref_atomic_inc_wrap: |
| case nir_intrinsic_image_deref_atomic_dec_wrap: |
| case nir_intrinsic_image_deref_load: |
| case nir_intrinsic_image_deref_samples: |
| case nir_intrinsic_image_deref_size: |
| case nir_intrinsic_image_deref_store: { |
| deref = nir_src_as_deref(intrinsic->src[0]); |
| var = nir_deref_instr_get_variable(deref); |
| break; |
| } |
| default: |
| return false; |
| } |
| |
| bool bindless = var->data.mode != nir_var_uniform || var->data.bindless; |
| if (bindless_only && !bindless) |
| return false; |
| |
| b->cursor = nir_before_instr(instr); |
| |
| nir_ssa_def *src; |
| if (bindless) { |
| src = nir_load_deref(b, deref); |
| } else { |
| src = nir_iadd_imm(b, |
| nir_build_deref_offset(b, deref, type_size_align_1), |
| var->data.driver_location); |
| } |
| nir_rewrite_image_intrinsic(intrinsic, src, bindless); |
| |
| return true; |
| } |
| |
| bool |
| gl_nir_lower_images(nir_shader *shader, bool bindless_only) |
| { |
| bool progress = false; |
| |
| nir_foreach_function(function, shader) { |
| if (function->impl) { |
| nir_builder b; |
| nir_builder_init(&b, function->impl); |
| |
| bool impl_progress = false; |
| nir_foreach_block(block, function->impl) |
| nir_foreach_instr(instr, block) |
| impl_progress |= lower_impl(&b, instr, bindless_only); |
| |
| if (impl_progress) { |
| nir_metadata_preserve(function->impl, |
| nir_metadata_block_index | |
| nir_metadata_dominance); |
| progress = true; |
| } else { |
| nir_metadata_preserve(function->impl, nir_metadata_all); |
| } |
| } |
| } |
| |
| return progress; |
| } |