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shader: evaluate unsigned min in runtime descriptors

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This commit is contained in:
nmzik
2026-08-15 17:10:09 +02:00
parent f453a752bb
commit f3cdf217ea
2 changed files with 40 additions and 1 deletions
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tests/ResourceTrackingTests.cpp
+33 -1
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@@ -234,6 +234,35 @@ void TestScalarAndVectorBufferAlias() {
"scalar/vector alias did not share a dense index");
}
void TestRuntimeUnsignedMinDescriptor() {
Fixture fixture;
const auto word3 = fixture.Emit(
ValueOpcode::UMin32, {fixture.UserData(0), Value(0x100u)});
const auto descriptor =
fixture.Buffer({Value(0u), Value(0u), Value(64u), word3}, 0x330);
MemoryInfo memory;
memory.kind = ResourceKind::Buffer;
fixture.Emit(ValueOpcode::LoadBufferU32,
{descriptor, Value(0u), Value(0u), Value(0u), Value(true)},
fixture.AddMemory(memory, 0x330));
fixture.PlanAndTrack();
std::array<uint32_t, 1> user_data{0xffffffffu};
SrtRuntime runtime{.user_data = user_data};
DescriptorValue value;
std::string error;
const auto source = fixture.program.info.buffers[0].source;
Check(EvaluateDescriptorSource(fixture.program, source, 0x330, runtime, value,
&error) &&
value.dwords[3] == 0x100u,
"runtime descriptor unsigned minimum did not clamp its first operand");
user_data[0] = 0x80u;
Check(EvaluateDescriptorSource(fixture.program, source, 0x330, runtime, value,
&error) &&
value.dwords[3] == 0x80u,
"runtime descriptor unsigned minimum did not preserve its first operand");
}
void TestImagesSamplersAndAliases() {
Fixture fixture;
std::array<Value, 8> image_words;
@@ -426,9 +455,11 @@ void TestPhiValidation() {
static_cast<uint64_t>(Type::U32));
phi.AddPhiOperand(left, Value(1u));
phi.AddPhiOperand(right, Value(2u));
const auto word3 = fixture.Emit(
ValueOpcode::UMin32, {Value(&phi), Value(0x100u)}, 0, merge);
const auto handle =
fixture.Emit(ValueOpcode::GetBufferResource,
{Value(&phi), Value(0u), Value(0u), Value(0u)},
{Value(0u), Value(0u), Value(0u), word3},
MemoryFlags{0, 20}, merge);
MemoryInfo memory;
memory.kind = ResourceKind::Buffer;
@@ -628,6 +659,7 @@ int main() {
};
Run("dense buffers", TestDenseBufferTracking);
Run("scalar/vector alias", TestScalarAndVectorBufferAlias);
Run("runtime unsigned min", TestRuntimeUnsignedMinDescriptor);
Run("images and samplers", TestImagesSamplersAndAliases);
Run("SRT runtime", TestSrtFlatteningAndRuntimeMemoization);
Run("dynamic SRT", TestDynamicSrtReadRemainsExplicit);