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shader: implement BUFFER_ATOMIC_FMAX

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nmzik committed 2026-08-05 02:59:28 +02:00
1 parent df44ad3fac
commit ac64d202af
15 files changed
+244 -14
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src/graphics/shader/recompiler/emitter/spirvEmitterMemory.cpp
+20 -9
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@@ -1184,7 +1184,8 @@ void EmitAtomicU32(EmitterState& state, const IR::Instruction& inst, uint32_t op
namespace {
uint32_t EmitF32BitsOrderedLessThan(EmitterState& state, uint32_t lhs_bits, uint32_t rhs_bits) {
uint32_t EmitF32BitsOrderedCompare(EmitterState& state, uint32_t lhs_bits, uint32_t rhs_bits,
uint32_t comparison_opcode) {
struct ClassifiedBits {
uint32_t nan = 0;
uint32_t zero = 0;
@@ -1219,14 +1220,13 @@ uint32_t EmitF32BitsOrderedLessThan(EmitterState& state, uint32_t lhs_bits, uint
const auto both_zero = EmitLogicalAndBool(state, lhs.zero, rhs.zero);
const auto ordered_nonzero =
EmitLogicalNotBool(state, EmitLogicalOrBool(state, any_nan, both_zero));
const auto less = state.builder.AllocateId();
state.builder.AddFunction({OpULessThan, state.bool_type, less, lhs.key, rhs.key});
return EmitLogicalAndBool(state, ordered_nonzero, less);
const auto comparison = state.builder.AllocateId();
state.builder.AddFunction({comparison_opcode, state.bool_type, comparison, lhs.key, rhs.key});
return EmitLogicalAndBool(state, ordered_nonzero, comparison);
}
} // namespace
void EmitAtomicFMinF32(EmitterState& state, const IR::Instruction& inst) {
void EmitAtomicFMinMaxF32(EmitterState& state, const IR::Instruction& inst,
uint32_t comparison_opcode) {
const auto index =
EmitMemoryDwordIndex(state, inst, inst.memory, 1, AddressSourceCount(inst, 1));
const auto in_bounds = EmitStorageBufferElementInBounds(state, inst.memory, index, inst.pc);
@@ -1235,15 +1235,26 @@ void EmitAtomicFMinF32(EmitterState& state, const IR::Instruction& inst) {
const auto pointer = EmitStorageBufferElementPointer(state, inst.memory, index, inst.pc);
return EmitAtomicUpdateU32(state, pointer, inst.memory.kind, [&](uint32_t old_u32) {
const auto replace_old = state.builder.AllocateId();
const auto less = EmitF32BitsOrderedLessThan(state, src_u32, old_u32);
const auto replace =
EmitF32BitsOrderedCompare(state, src_u32, old_u32, comparison_opcode);
state.builder.AddFunction(
{OpSelect, state.uint_type, replace_old, less, src_u32, old_u32});
{OpSelect, state.uint_type, replace_old, replace, src_u32, old_u32});
return replace_old;
});
});
EmitStoreU32(state, inst.dst, old);
}
} // namespace
void EmitAtomicFMinF32(EmitterState& state, const IR::Instruction& inst) {
EmitAtomicFMinMaxF32(state, inst, OpULessThan);
}
void EmitAtomicFMaxF32(EmitterState& state, const IR::Instruction& inst) {
EmitAtomicFMinMaxF32(state, inst, OpUGreaterThan);
}
void EmitSLoadDword(EmitterState& state, const IR::Instruction& inst) {
if (state.address_memory_variable == 0) {
ExitDescriptorBindingFailure(state, IR::DescriptorBindingKind::AddressMemory,