Implement GrMtlOpsRenderPass::onClear.

In certain corner cases the RenderTargetContext can end up injecting a
clear op into the op stream, so we need to handle that.

Bug: skia:10163
Change-Id: I57722d335bbc59bb9f0a767f774a4620dfde3f39
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/284878
Commit-Queue: Jim Van Verth <jvanverth@google.com>
Reviewed-by: Chinmay Garde <chinmaygarde@google.com>
Reviewed-by: Michael Ludwig <michaelludwig@google.com>
1 file changed