The EGL spec says depth/stencil value are undefined after swap. We dont
need to store depth/stencil value if this is the very last renderpass of
a presentable surface and the endRenderpass call is from swap call.
Bug: b/153885625
Change-Id: Ie853d2686c8eb15a4fa9dbdd80eb66e9fc037d24
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2157886Reviewed-by: Jamie Madill <jmadill@chromium.org>
Commit-Queue: Charlie Lao <cclao@google.com>
