Skip updating viewport and scissor info if the same If glViewport() or glScissor() is called with same info, skip updating viewport or scissor info and related dirty bits. Bug: angleproject:4487 Change-Id: I9a0f3eb0df789beb99447ebc98383f502fbc763d Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2105528 Commit-Queue: Geoff Lang <geofflang@chromium.org> Reviewed-by: Jamie Madill <jmadill@chromium.org> Reviewed-by: Geoff Lang <geofflang@chromium.org>