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Don't clear past the end of groupshared arrays

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[CL 23027225 by jian ru in ue5-main branch]
This commit is contained in:
jian ru
2022-11-08 09:00:54 -05:00
parent 9b2403696f
commit 54159d5c29
1 changed files with 6 additions and 3 deletions
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Engine/Shaders/Private/Nanite/NaniteRasterizer.usf
+6 -3
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@@ -978,14 +978,17 @@ groupshared uint GroupVertOwningLaneIds[NANITE_USE_CONSTRAINED_CLUSTERS ? 16 : 6
uint DeduplicateVertIndices(FInstanceSceneData InstanceData, FCluster Cluster, uint FirstTriIndex, uint BatchTriCount, uint TriIndex, uint LaneIndex, out uint MyVertIndex, out uint3 SrcLaneIndices)
{
if (LaneIndex < 8)
if (LaneIndex < (NANITE_USE_CONSTRAINED_CLUSTERS ? 2 : 8))
{
GroupUsedVertMask[LaneIndex] = 0;
}
UNROLL
for (uint i = 0; i < 64; i += 32)
for (uint i = 0; i < (NANITE_USE_CONSTRAINED_CLUSTERS ? 16 : 64); i += 32)
{
GroupVertOwningLaneIds[i + LaneIndex] = 0;
if (i + LaneIndex < (NANITE_USE_CONSTRAINED_CLUSTERS ? 16 : 64))
{
GroupVertOwningLaneIds[i + LaneIndex] = 0;
}
}
GroupMemoryBarrier();