texImage(canvas) isn&#x27;t gpu-&gt;gpu yet. texImage(video) is the only gpu-&gt;gpu right now.<p>Because of the shape of the API though (support for arbitrary unpack format&#x2F;type requests), depending on the underlying pixel formats, gpu-&gt;gpu blit isn&#x27;t guaranteed.<p>We&#x27;re looking into ways to provide a reliable fast-path.