message: Fix calculation of index buffer offset. Closes
diff: @@ -1529,7 +1529,7 @@ static void ConfigureMeshColumns(ICaptureContext &ctx, PopulateBufferData *bufda
  BufferDescription *buf = ctx.GetBuffer(ib.resourceId);
  if(buf)
  {
  - uint64_t offset = ib.byteOffset - draw->indexOffset * draw->indexByteWidth;
  + uint64_t offset = ib.byteOffset + draw->indexOffset * draw->indexByteWidth;
  if(offset > buf->length)
  bytesAvailable = 0;
  else
  