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Fix shared memory definition when only one type is used (#3106)

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Marcin Mikołajczyk 2025-06-17 08:37:09 +02:00 • committed by GitHub
parent 21d14abaee
commit 9dd35c3a42
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2 changed files with 36 additions and 17 deletions
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17
src/shader_recompiler/backend/spirv/spirv_emit_context.cpp
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@ -995,19 +995,26 @@ void EmitContext::DefineSharedMemory() {
const u32 num_elements{Common::DivCeil(shared_memory_size, element_size)};
const Id array_type{TypeArray(element_type, ConstU32(num_elements))};
Decorate(array_type, spv::Decoration::ArrayStride, element_size);
const Id struct_type{TypeStruct(array_type)};
MemberDecorate(struct_type, 0u, spv::Decoration::Offset, 0u);
const auto mem_type = [&] {
if (num_types > 1) {
const Id struct_type{TypeStruct(array_type)};
Decorate(struct_type, spv::Decoration::Block);
MemberDecorate(struct_type, 0u, spv::Decoration::Offset, 0u);
return struct_type;
} else {
return array_type;
}
}();
const Id pointer = TypePointer(spv::StorageClass::Workgroup, struct_type);
const Id pointer = TypePointer(spv::StorageClass::Workgroup, mem_type);
const Id element_pointer = TypePointer(spv::StorageClass::Workgroup, element_type);
const Id variable = AddGlobalVariable(pointer, spv::StorageClass::Workgroup);
Name(variable, name);
interfaces.push_back(variable);
if (num_types > 1) {
Decorate(struct_type, spv::Decoration::Block);
Decorate(array_type, spv::Decoration::ArrayStride, element_size);
Decorate(variable, spv::Decoration::Aliased);
}