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shader: track material offsets scaled after lane selection

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nmzik committed 2026-10-13 21:33:50 +00:00
1 parent fe6499b86e
commit 907c65f54c
2 files changed
+33 -10
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src/graphics/shader/recompiler/ir/passes/ResourceTracking.cpp
+13 -5
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@@ -2076,13 +2076,21 @@ private:
stride = 4u;
offset = 0u;
} else if (count.IsEmpty()) {
const auto* lane = read->Arg(1).Resolve().TryInstruction();
auto address = read->Arg(1);
auto active = Value(true);
const auto* lane = address.Resolve().TryInstruction();
const bool selected_lane = lane != nullptr && lane->GetOpcode() == ValueOpcode::ReadFirstLane;
if (selected_lane) {
active = lane->Arg(1);
address = lane->Arg(0);
}
AffineOffset affine;
if (!MatchAffineOffset(address, active, affine) ||
affine.index.IsEmpty() || affine.stride == 0u) return false;
if (!selected_lane) lane = affine.index.Resolve().TryInstruction();
if (lane == nullptr || lane->GetOpcode() != ValueOpcode::ReadFirstLane ||
!HasActiveLane(lane->Arg(1), lane->Parent())) return false;
AffineOffset affine;
if (!MatchAffineOffset(lane->Arg(0), lane->Arg(1), affine) ||
affine.index.IsEmpty() || affine.stride == 0u) return false;
count = SharedLoadBound(affine.index, lane->Arg(1));
if (selected_lane) count = SharedLoadBound(affine.index, active);
if (!count.IsEmpty() && ((affine.stride | affine.offset) & 3u) == 0u &&
affine.offset + memory->offset <= UINT32_MAX) {
stride = static_cast<uint32_t>(affine.stride);