When the canvas buffer is the only draw into the layer, we should be able to just directly copy the pixels instead of blending. This also means we can skip clearing the back buffer.
Pull request: https://github.com/WebKit/WebKit/pull/11264
Committed 261484@main (876cd0f5d213): <https://commits.webkit.org/261484@main> Reviewed commits have been landed. Closing PR #11264 and removing active labels.
<rdar://problem/106533934>