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graphics: support dynamic storage mip writes

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This commit is contained in:
Senaxx
2026-08-16 06:01:57 +02:00
committed by nmzik
parent f785974cc1
commit 980d89f739
15 changed files with 451 additions and 54 deletions
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src/graphics/shader/recompiler/backend/spirv/spirvEmitterAnalysis.cpp
+42
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@@ -469,6 +469,48 @@ uint32_t LoadStorageImageDescriptor(EmitterState& state, uint32_t resource, bool
return image;
}
void EmitStorageImageWrite(EmitterState& state, uint32_t resource, bool uint_image,
ImageViewKind view, uint32_t mip_lod, uint32_t coord, uint32_t texel) {
const auto kind = StorageBindingKind(uint_image, view);
const auto binding = ResourceForDescriptor(state, kind, resource);
const auto& image = state.program.info.images.at(resource);
const auto LoadAt = [&](uint32_t array_index) {
const auto pointer = DescriptorElementPointer(
state, StorageImagePointerType(state, uint_image, view),
StorageImageVariable(state, uint_image, view), array_index, kind, resource,
"storage image descriptor array was not emitted");
const auto descriptor = state.builder.AllocateId();
state.builder.AddFunction(
{OpLoad, StorageImageType(state, uint_image, view), descriptor, pointer});
return descriptor;
};
if (image.mip_mode != IR::ImageMipMode::DynamicStorage) {
state.builder.AddFunction({OpImageWrite, LoadAt(binding.array_index), coord, texel});
return;
}
if (image.mip_count == 0u) {
ExitDescriptorBindingFailure(state, kind, resource,
"dynamic storage image has no mip descriptors");
}
const auto merge_label = state.builder.AllocateId();
std::vector<uint32_t> labels(image.mip_count);
std::vector<uint32_t> words {OpSwitch, mip_lod, merge_label};
for (uint32_t mip = 0; mip < image.mip_count; mip++) {
labels[mip] = state.builder.AllocateId();
words.push_back(mip);
words.push_back(labels[mip]);
}
state.builder.AddFunction({OpSelectionMerge, merge_label, SelectionControlNone});
state.builder.AddFunction(words);
for (uint32_t mip = 0; mip < image.mip_count; mip++) {
state.builder.AddFunction({OpLabel, labels[mip]});
state.builder.AddFunction({OpImageWrite, LoadAt(binding.array_index + mip), coord, texel});
state.builder.AddFunction({OpBranch, merge_label});
}
state.builder.AddFunction({OpLabel, merge_label});
}
uint32_t ExecutionModelForStage(ShaderType stage) {
switch (stage) {
case ShaderType::Vertex: return ExecutionModelVertex;