feb83f2f82
Signed-off-by: Karol Herbst <kherbst@redhat.com> Reviewed-by: Gert Wollny <gert.wollny@collabora.com> Reviewed-by: Eric Anholt <eric@anholt.net> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/5480>
137 lines
4.3 KiB
C
137 lines
4.3 KiB
C
/*
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* Copyright © 2019 Red Hat Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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/**
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* \file
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*
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* Lower image operations by turning the image_deref_* into a image_* on an
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* index number or bindless_image_* intrinsic on a load_deref of the previous
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* deref source. All applicable indicies are also set so that fetching the
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* variable in the backend wouldn't be needed anymore.
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*/
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#include "compiler/nir/nir.h"
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#include "compiler/nir/nir_builder.h"
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#include "compiler/nir/nir_deref.h"
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#include "compiler/glsl/gl_nir.h"
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static void
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type_size_align_1(const struct glsl_type *type, unsigned *size, unsigned *align)
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{
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unsigned s;
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if (glsl_type_is_array(type))
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s = glsl_get_aoa_size(type);
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else
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s = 1;
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*size = s;
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*align = s;
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}
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static bool
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lower_impl(nir_builder *b, nir_instr *instr, bool bindless_only)
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{
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if (instr->type != nir_instr_type_intrinsic)
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return false;
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nir_intrinsic_instr *intrinsic = nir_instr_as_intrinsic(instr);
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nir_deref_instr *deref;
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nir_variable *var;
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switch (intrinsic->intrinsic) {
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case nir_intrinsic_image_deref_atomic_add:
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case nir_intrinsic_image_deref_atomic_imin:
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case nir_intrinsic_image_deref_atomic_umin:
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case nir_intrinsic_image_deref_atomic_imax:
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case nir_intrinsic_image_deref_atomic_umax:
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case nir_intrinsic_image_deref_atomic_and:
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case nir_intrinsic_image_deref_atomic_or:
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case nir_intrinsic_image_deref_atomic_xor:
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case nir_intrinsic_image_deref_atomic_exchange:
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case nir_intrinsic_image_deref_atomic_comp_swap:
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case nir_intrinsic_image_deref_atomic_fadd:
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case nir_intrinsic_image_deref_atomic_inc_wrap:
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case nir_intrinsic_image_deref_atomic_dec_wrap:
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case nir_intrinsic_image_deref_load:
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case nir_intrinsic_image_deref_samples:
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case nir_intrinsic_image_deref_size:
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case nir_intrinsic_image_deref_store: {
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deref = nir_src_as_deref(intrinsic->src[0]);
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var = nir_deref_instr_get_variable(deref);
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break;
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}
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default:
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return false;
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}
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bool bindless = deref->mode != nir_var_uniform || var->data.bindless;
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if (bindless_only && !bindless)
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return false;
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b->cursor = nir_before_instr(instr);
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nir_ssa_def *src;
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if (bindless) {
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src = nir_load_deref(b, deref);
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} else {
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src = nir_iadd_imm(b,
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nir_build_deref_offset(b, deref, type_size_align_1),
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var->data.driver_location);
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}
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nir_rewrite_image_intrinsic(intrinsic, src, bindless);
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return true;
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}
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bool
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gl_nir_lower_images(nir_shader *shader, bool bindless_only)
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{
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bool progress = false;
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nir_foreach_function(function, shader) {
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if (function->impl) {
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nir_builder b;
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nir_builder_init(&b, function->impl);
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bool impl_progress = false;
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nir_foreach_block(block, function->impl)
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nir_foreach_instr(instr, block)
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impl_progress |= lower_impl(&b, instr, bindless_only);
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if (impl_progress) {
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nir_metadata_preserve(function->impl,
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nir_metadata_block_index |
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nir_metadata_dominance);
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progress = true;
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} else {
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nir_metadata_preserve(function->impl, nir_metadata_all);
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}
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}
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}
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return progress;
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}
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