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shader: track material offsets scaled after lane selection

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This commit is contained in:
nmzik
2026-10-13 05:51:02 +02:00
parent fe6499b86e
commit 907c65f54c
2 changed files with 33 additions and 10 deletions
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tests/ResourceTrackingTests.cpp
+20 -5
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@@ -2398,26 +2398,30 @@ void TestUniformScalarBufferImage() {
}
void TestScalarBufferSelectorDomain() {
const auto make_plan = [](bool active = true, bool sparse = false) {
const auto make_plan = [](bool active = true, bool sparse = false, bool uniformize_first = false) {
Fixture fixture;
const auto material = fixture.Buffer({fixture.UserData(0), fixture.UserData(1),
fixture.UserData(2), fixture.UserData(3)});
MemoryInfo lds;
lds.kind = ResourceKind::Lds;
const auto index = fixture.Emit(ValueOpcode::LoadSharedU32,
auto index = fixture.Emit(ValueOpcode::LoadSharedU32,
{Value(8u), Value(true)}, fixture.AddMemory(lds, 0x10));
if (uniformize_first)
index = fixture.Emit(ValueOpcode::ReadFirstLane, {index, Value(active)});
auto offset = fixture.Emit(ValueOpcode::ShiftLeftLogical32,
{index, Value(sparse ? 31u : 5u)});
if (!sparse)
offset = fixture.Emit(ValueOpcode::IAdd32,
{fixture.Emit(ValueOpcode::ShiftLeftLogical32, {offset, Value(2u)}), offset});
offset = fixture.Emit(ValueOpcode::IAdd32, {offset, Value(3u)});
offset = fixture.Emit(ValueOpcode::ReadFirstLane, {offset, Value(active)});
if (!uniformize_first)
offset = fixture.Emit(ValueOpcode::ReadFirstLane, {offset, Value(active)});
MemoryInfo scalar;
scalar.kind = ResourceKind::ScalarBuffer;
scalar.offset = 147u;
const auto key = fixture.Emit(ValueOpcode::ReadConstBuffer,
auto key = fixture.Emit(ValueOpcode::ReadConstBuffer,
{material, offset}, fixture.AddMemory(scalar, 0x20));
if (uniformize_first) key = fixture.Emit(ValueOpcode::UMin32, {key, Value(2u)});
const auto table = fixture.Address(fixture.UserData(4), fixture.UserData(5));
const auto record = fixture.Emit(ValueOpcode::ShiftLeftLogical32, {key, Value(5u)});
std::array<Value, 8> words;
@@ -2436,7 +2440,10 @@ void TestScalarBufferSelectorDomain() {
fixture.PlanAndTrack();
const auto &indirect = fixture.program.descriptor_sources[
fixture.program.info.images[0].source].indirect_descriptor;
Check(indirect && indirect->selector && indirect->key_count.IsEmpty() &&
if (!active && uniformize_first)
Check(indirect && !indirect->selector && indirect->key_count == Value(3u),
"scaled empty EXEC lane read retained an unproved selector");
else Check(indirect && indirect->selector && indirect->key_count.IsEmpty() &&
indirect->selector_first.IsEmpty() && indirect->selector->offset == 144u &&
indirect->selector->stride == (sparse ? 0x80000000u : 32u),
"scalar selector assumed an unwrapped 160-byte record or combined unaligned offsets");
@@ -2450,6 +2457,7 @@ void TestScalarBufferSelectorDomain() {
auto plan = make_plan();
CheckFatal([&] { make_plan(false); }, "not a valid runtime value",
"scalar selector accepted an empty EXEC lane read");
make_plan(false, false, true);
LinearTestMemory memory;
memory.words[144u / 4u] = 1u;
memory.words[160u / 4u] = 99u; // This field is outside the affine offset domain.
@@ -2474,6 +2482,13 @@ void TestScalarBufferSelectorDomain() {
memory.watched_dwords == 1u && snapshot.images[0].dwords[0] == 0x100u &&
snapshot.images[2].dwords[0] == 0x102u,
"scalar selector read outside its wrapped domain or omitted the OOB zero key");
const auto scaled_lane = make_plan(true, false, true);
memory.words[176u / 4u] = UINT32_MAX;
Check(MaterializeResources(scaled_lane, runtime, snapshot, specialization) &&
snapshot.images.size() == 3u && snapshot.images[0].dwords[0] == 0x100u &&
snapshot.images[1].dwords[0] == 0x101u && snapshot.images[2].dwords[0] == 0x102u,
"scaling after lane selection lost wrapped offsets, clamped keys, or the OOB zero key");
memory.words[176u / 4u] = 2u;
for (const auto size : {0u, 144u, 147u, 148u}) {
user_data[2] = size;
memory.watched_reads = 0u;