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Clamp buffer offset for mesh view input

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* If the calculated offset is larger than the buffer size we should be sure to
  clamp it.
This commit is contained in:
baldurk
2020-04-15 20:33:57 +01:00
parent 62bb77a9b6
commit 44f46b6ae9
1 changed files with 7 additions and 1 deletions
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qrenderdoc/Windows/BufferViewer.cpp
+7 -1
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@@ -1528,7 +1528,13 @@ static void ConfigureMeshColumns(ICaptureContext &ctx, PopulateBufferData *bufda
BufferDescription *buf = ctx.GetBuffer(ib.resourceId);
if(buf)
bytesAvailable = buf->length - ib.byteOffset - draw->indexOffset * draw->indexByteWidth;
{
uint64_t offset = ib.byteOffset - draw->indexOffset * draw->indexByteWidth;
if(offset > buf->length)
bytesAvailable = 0;
else
bytesAvailable = buf->length - offset;
}
// drawing more than this many indices will read off the end of the index buffer - which while
// technically not invalid is certainly not intended, so serves as a good 'upper bound'