Src access mask may be 0 with WAR barriers. Bug: angleproject:5290 Change-Id: I798d4c36aa7d3d14db333a7e86794e13c8137f96 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2514841 Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org> Reviewed-by: Charlie Lao <cclao@google.com> Reviewed-by: Jamie Madill <jmadill@chromium.org>
