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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/frontend/translate/Memory.cpp
+14 -3
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@@ -558,9 +558,18 @@ void Translator::IMAGE_ATOMIC(const Decoder::Instruction& inst, IR::ValueOpcode
const auto memory = MemoryInfoFromDecoded(inst);
const auto resource = GetImageResource(memory);
const auto address = MakeImageAddress(inst, MemorySourceAt(inst, 1));
const auto result =
ir.Emit(opcode, {resource, address, ReadU32(MemorySourceAt(inst, 0)), ir.GetExec()},
AddMemoryInfo(memory, inst.pc));
const auto data = MemorySourceAt(inst, 0);
const auto flags = AddMemoryInfo(memory, inst.pc);
IR::Value result;
if (opcode == IR::ValueOpcode::ImageAtomicCompareSwap32) {
// VDATA supplies the replacement; VDATA+1 supplies the comparison.
result = ir.Emit(opcode,
{resource, address, ReadU32(data), ReadU32(OffsetOperand(data, 1u)),
ir.GetExec()},
flags);
} else {
result = ir.Emit(opcode, {resource, address, ReadU32(data), ir.GetExec()}, flags);
}
if (inst.glc) {
WriteOperand(inst.dst, result);
}
@@ -1030,6 +1039,8 @@ void Translator::EmitMemory(const Decoder::Instruction& inst) {
case Decoder::Opcode::DS_WRXCHG_RTN_B32:
return DS_ATOMIC(inst, IR::ValueOpcode::SharedAtomicSwap32, true);
case Decoder::Opcode::IMAGE_ATOMIC_CMPSWAP:
return IMAGE_ATOMIC(inst, IR::ValueOpcode::ImageAtomicCompareSwap32);
case Decoder::Opcode::IMAGE_ATOMIC_SWAP:
return IMAGE_ATOMIC(inst, IR::ValueOpcode::ImageAtomicSwap32);
case Decoder::Opcode::IMAGE_ATOMIC_ADD: