ContextVk::onBufferRead can check for "usesBufferForWrite". Bug: angleproject:4911 Change-Id: Id295c068fd9a4027c3127830c682d62d614718dc Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2355102Reviewed-by: Charlie Lao <cclao@google.com> Reviewed-by: Tim Van Patten <timvp@google.com> Commit-Queue: Tim Van Patten <timvp@google.com>
