| /* |
| * 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 bindless image operations by turning the image_deref_* into a |
| * bindless_image_* intrinsic and adding a load_deref on 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 bool |
| lower_impl(nir_builder *b, nir_instr *instr) { |
| 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_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; |
| } |
| |
| if (deref->mode == nir_var_uniform && !var->data.bindless) |
| return false; |
| |
| b->cursor = nir_before_instr(instr); |
| nir_ssa_def *handle = nir_load_deref(b, deref); |
| nir_rewrite_image_intrinsic(intrinsic, handle, true); |
| return true; |
| } |
| |
| bool |
| gl_nir_lower_bindless_images(nir_shader *shader) |
| { |
| bool progress = false; |
| |
| nir_foreach_function(function, shader) { |
| if (function->impl) { |
| nir_builder b; |
| nir_builder_init(&b, function->impl); |
| |
| nir_foreach_block(block, function->impl) |
| nir_foreach_instr(instr, block) |
| progress |= lower_impl(&b, instr); |
| } |
| } |
| |
| return progress; |
| } |