/* Upload vertices. The hw rectangle has only 3 vertices,
* I guess the 4th one is derived from the first 3.
* The vertex specification should match u_blitter's vertex element state. */
- u_upload_alloc(rctx->uploader, 0, sizeof(float) * 24, &offset, &buf, (void**)&vb);
+ u_upload_alloc(rctx->uploader, 0, sizeof(float) * 24, 256, &offset, &buf, (void**)&vb);
if (!buf)
return;