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shader: implement 32-bit RDNA2 IMAGE_ATOMIC_CMPSWAP (#952)

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* shader: implement 32-bit RDNA2 image atomic compare-and-swap

* shader: share atomic emission and correct image barriers

---------

Co-authored-by: nmzik <Nmzik@mail.ru>
This commit is contained in:
Louis
2026-10-01 23:15:53 +02:00
committed by GitHub
parent 4428640b44
commit b3e419ff11
12 changed files with 163 additions and 102 deletions
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src/graphics/shader/recompiler/backend/spirv/spirvEmitterImage.cpp
+3 -23
View File
@@ -539,21 +539,6 @@ uint32_t StoreTexel(ValueEmitContext& ctx, const IR::MemoryInfo& mem, uint32_t d
return PackImageTexel(ctx, mem, texel);
}
spv::Op ImageAtomicOpcode(IR::ValueOpcode opcode) {
switch (opcode) {
case IR::ValueOpcode::ImageAtomicSwap32: return spv::OpAtomicExchange;
case IR::ValueOpcode::ImageAtomicIAdd32: return spv::OpAtomicIAdd;
case IR::ValueOpcode::ImageAtomicSMin32: return spv::OpAtomicSMin;
case IR::ValueOpcode::ImageAtomicUMin32: return spv::OpAtomicUMin;
case IR::ValueOpcode::ImageAtomicSMax32: return spv::OpAtomicSMax;
case IR::ValueOpcode::ImageAtomicUMax32: return spv::OpAtomicUMax;
case IR::ValueOpcode::ImageAtomicAnd32: return spv::OpAtomicAnd;
case IR::ValueOpcode::ImageAtomicOr32: return spv::OpAtomicOr;
case IR::ValueOpcode::ImageAtomicXor32: return spv::OpAtomicXor;
default: return spv::OpNop;
}
}
} // namespace
void EmitImage(ValueEmitContext& ctx, const IR::Inst& inst) {
@@ -878,10 +863,9 @@ void EmitImage(ValueEmitContext& ctx, const IR::Inst& inst) {
ctx.Define(inst, ResultVector(ctx, result, numeric_class, dref, mem));
return;
}
const auto atomic_opcode = ImageAtomicOpcode(op);
if (image_info.access == IR::ImageAccess::Atomic) {
const auto dimension = image.dimension;
ctx.Define(inst, EmitValueOrZeroIfCondition(state, ctx.Arg(inst, 3), [&]() {
ctx.Define(inst, EmitValueOrZeroIfCondition(state, ctx.Arg(inst, inst.NumArgs() - 1), [&]() {
const auto pointer = state.builder.AllocateId();
const auto pointer_type = state.builder.Type(
spv::OpTypePointer, spv::StorageClassImage, TypeU32(state));
@@ -898,12 +882,8 @@ void EmitImage(ValueEmitContext& ctx, const IR::Inst& inst) {
op == IR::ValueOpcode::ImageAtomicFMax32);
});
}
const auto old = state.builder.AllocateId();
state.builder.AddFunction(atomic_opcode, TypeU32(state), old, pointer,
ConstantU32(state, spv::ScopeDevice),
ConstantU32(state, spv::MemorySemanticsMaskNone),
ctx.Arg(inst, 2));
EmitDeviceAtomicMemoryBarrier(state);
const auto old = EmitAtomicOperation(ctx, inst, pointer, spv::ScopeDevice);
EmitAtomicMemoryBarrier(state, IR::ResourceKind::Image);
return old;
}));
return;