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BUFFER_ATOMIC_CMPSWAP (#3045)

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Marcin Mikołajczyk 2025-06-08 20:43:58 +02:00 • committed by GitHub
parent 952cef5a15
commit ce84e80f65
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22
src/shader_recompiler/backend/spirv/emit_spirv_atomic.cpp
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@ -68,6 +68,22 @@ Id BufferAtomicU32(EmitContext& ctx, IR::Inst* inst, u32 handle, Id address, Id
});
}
Id BufferAtomicU32CmpSwap(EmitContext& ctx, IR::Inst* inst, u32 handle, Id address, Id value,
Id cmp_value,
Id (Sirit::Module::*atomic_func)(Id, Id, Id, Id, Id, Id, Id)) {
const auto& buffer = ctx.buffers[handle];
if (Sirit::ValidId(buffer.offset)) {
address = ctx.OpIAdd(ctx.U32[1], address, buffer.offset);
}
const Id index = ctx.OpShiftRightLogical(ctx.U32[1], address, ctx.ConstU32(2u));
const auto [id, pointer_type] = buffer[EmitContext::PointerType::U32];
const Id ptr = ctx.OpAccessChain(pointer_type, id, ctx.u32_zero_value, index);
const auto [scope, semantics]{AtomicArgs(ctx)};
return BufferAtomicU32BoundsCheck(ctx, index, buffer.size_dwords, [&] {
return (ctx.*atomic_func)(ctx.U32[1], ptr, scope, semantics, semantics, value, cmp_value);
});
}
Id ImageAtomicU32(EmitContext& ctx, IR::Inst* inst, u32 handle, Id coords, Id value,
Id (Sirit::Module::*atomic_func)(Id, Id, Id, Id, Id)) {
const auto& texture = ctx.images[handle & 0xFFFF];
@ -175,6 +191,12 @@ Id EmitBufferAtomicSwap32(EmitContext& ctx, IR::Inst* inst, u32 handle, Id addre
return BufferAtomicU32(ctx, inst, handle, address, value, &Sirit::Module::OpAtomicExchange);
}
Id EmitBufferAtomicCmpSwap32(EmitContext& ctx, IR::Inst* inst, u32 handle, Id address, Id value,
Id cmp_value) {
return BufferAtomicU32CmpSwap(ctx, inst, handle, address, value, cmp_value,
&Sirit::Module::OpAtomicCompareExchange);
}
Id EmitImageAtomicIAdd32(EmitContext& ctx, IR::Inst* inst, u32 handle, Id coords, Id value) {
return ImageAtomicU32(ctx, inst, handle, coords, value, &Sirit::Module::OpAtomicIAdd);
}