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Fix signed sampler comparisons

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This commit is contained in:
nmzik
2026-09-20 14:08:22 +04:00
parent 8d66c4ef6d
commit 102a10f0fe
2 changed files with 13 additions and 4 deletions
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src/graphics/shader/recompiler/ir/passes/SrtWalker.cpp
+8
View File
@@ -125,6 +125,7 @@ bool IsRuntimeUniformOp(ValueOpcode op) {
case ValueOpcode::ULessThan32:
case ValueOpcode::IEqual32:
case ValueOpcode::UGreaterThan32:
case ValueOpcode::SGreaterThanEqual32:
case ValueOpcode::INotEqual32:
case ValueOpcode::LogicalOr:
case ValueOpcode::LogicalAnd:
@@ -930,6 +931,13 @@ private:
return true;
}
return false;
case ValueOpcode::SGreaterThanEqual32:
if (binary()) {
result = std::bit_cast<int32_t>(static_cast<uint32_t>(a)) >=
std::bit_cast<int32_t>(static_cast<uint32_t>(b));
return true;
}
return false;
case ValueOpcode::LogicalAnd:
if (binary()) {
result = (a != 0u) && (b != 0u);
tests/ResourceTrackingTests.cpp
+5 -4
View File
@@ -1246,7 +1246,7 @@ ResourcePlan ConditionalSamplerPlan(bool diamond, bool reverse, bool reverse_phi
flag = fixture.Emit(ValueOpcode::LaneId);
}
fixture.program.block_info[0].condition =
fixture.Emit(ValueOpcode::IEqual32, {flag, Value(0u)});
fixture.Emit(ValueOpcode::SGreaterThanEqual32, {flag, Value(0u)});
if (writable) {
MemoryInfo memory;
memory.kind = ResourceKind::Buffer;
@@ -1324,9 +1324,10 @@ void TestConditionalSamplerPhi() {
.userdata = &memory,
.read_specialization_memory =
ReadLinearTestMemory};
for (uint32_t flag = 0; flag < 2; ++flag) {
memory.words[(0x1000 + 196) / 4] = flag;
const uint32_t first = (flag != 0u) != reverse ? 480 / 4 : 448 / 4;
// Sampler selection compares a signed value against zero.
for (const auto flag : {-1, 0, 1, INT32_MIN, INT32_MAX}) {
memory.words[(0x1000 + 196) / 4] = std::bit_cast<uint32_t>(flag);
const uint32_t first = (flag < 0) != reverse ? 480 / 4 : 448 / 4;
memory.fail_address = 0x1000 + (first == 448 / 4 ? 480u : 448u);
DescriptorValue selected;
Check(EvaluateDescriptorSource(plan, source, runtime, selected),