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spirv: Simplify shared memory handling (#427)

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* spirv: Simplify shared memory handling

* spirv: Ignore clip plane

* spirv: Fix image offsets

* ir_pass: Implement shared memory lowering pass

* NVIDIA doesn't like using shared mem in fragment shader and softlocks driver

* spirv: Add log for ignoring pos1
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TheTurtle 2024-08-14 19:01:17 +03:00 • committed by GitHub
parent 4b11dabd9e
commit d332a5e611
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17 changed files with 182 additions and 274 deletions
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34
src/shader_recompiler/backend/spirv/spirv_emit_context.cpp
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@ -513,43 +513,9 @@ void EmitContext::DefineSharedMemory() {
if (info.shared_memory_size == 0) {
info.shared_memory_size = DefaultSharedMemSize;
}
const auto make{[&](Id element_type, u32 element_size) {
const u32 num_elements{Common::DivCeil(info.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);
Decorate(struct_type, spv::Decoration::Block);
const Id pointer{TypePointer(spv::StorageClass::Workgroup, struct_type)};
const Id element_pointer{TypePointer(spv::StorageClass::Workgroup, element_type)};
const Id variable{AddGlobalVariable(pointer, spv::StorageClass::Workgroup)};
Decorate(variable, spv::Decoration::Aliased);
interfaces.push_back(variable);
return std::make_tuple(variable, element_pointer, pointer);
}};
if (profile.support_explicit_workgroup_layout) {
AddExtension("SPV_KHR_workgroup_memory_explicit_layout");
AddCapability(spv::Capability::WorkgroupMemoryExplicitLayoutKHR);
if (info.uses_shared_u8) {
AddCapability(spv::Capability::WorkgroupMemoryExplicitLayout8BitAccessKHR);
std::tie(shared_memory_u8, shared_u8, std::ignore) = make(U8, 1);
}
if (info.uses_shared_u16) {
AddCapability(spv::Capability::WorkgroupMemoryExplicitLayout16BitAccessKHR);
std::tie(shared_memory_u16, shared_u16, std::ignore) = make(U16, 2);
}
std::tie(shared_memory_u32, shared_u32, shared_memory_u32_type) = make(U32[1], 4);
std::tie(shared_memory_u32x2, shared_u32x2, std::ignore) = make(U32[2], 8);
std::tie(shared_memory_u32x4, shared_u32x4, std::ignore) = make(U32[4], 16);
return;
}
const u32 num_elements{Common::DivCeil(info.shared_memory_size, 4U)};
const Id type{TypeArray(U32[1], ConstU32(num_elements))};
shared_memory_u32_type = TypePointer(spv::StorageClass::Workgroup, type);
shared_u32 = TypePointer(spv::StorageClass::Workgroup, U32[1]);
shared_memory_u32 = AddGlobalVariable(shared_memory_u32_type, spv::StorageClass::Workgroup);
interfaces.push_back(shared_memory_u32);