- struct xmesa_renderbuffer *srcXrb = (struct xmesa_renderbuffer *)
- ctx->ReadBuffer->_ColorReadBuffer;
- struct xmesa_renderbuffer *dstXrb = (struct xmesa_renderbuffer *)
- ctx->DrawBuffer->_ColorDrawBuffers[0][0];
+ struct xmesa_renderbuffer *srcXrb
+ = xmesa_renderbuffer(ctx->ReadBuffer->_ColorReadBuffer->Wrapped);
+ struct xmesa_renderbuffer *dstXrb
+ = xmesa_renderbuffer(ctx->DrawBuffer->_ColorDrawBuffers[0][0]->Wrapped);