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Apply out-of-bounds index count clamping to VS output

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baldurk
2021-04-28 10:36:59 +01:00
parent 2e0af1e3ca
commit 52612c1f66
1 changed files with 13 additions and 2 deletions
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qrenderdoc/Windows/BufferViewer.cpp
+13 -2
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@@ -1827,8 +1827,19 @@ static void RT_FetchMeshData(IReplayController *r, ICaptureContext &ctx, Populat
data->vsinConfig.buffers.push_back(buf);
}
data->vsoutConfig.numRows = data->postVS.numIndices;
data->vsoutConfig.unclampedNumRows = 0;
if(data->postVS.numIndices <= data->vsinConfig.numRows)
{
data->vsoutConfig.numRows = data->postVS.numIndices;
data->vsoutConfig.unclampedNumRows = 0;
}
else
{
// the vertex shader can't run any expansion, so apply the same clamping to it as we applied to
// the inputs. This protects against draws with an invalid number of vertices.
data->vsoutConfig.numRows = data->vsinConfig.numRows;
data->vsoutConfig.unclampedNumRows = data->vsinConfig.unclampedNumRows;
}
data->vsoutConfig.baseVertex = data->postVS.baseVertex;
data->vsoutConfig.displayBaseVertex = data->vsinConfig.baseVertex;