This was fixed in SwiftShader and I verified it

Bug: angleproject:4213
Change-Id: I6f591b81a62ec4c586d4abb7e6a2345794602833
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2025066Reviewed-by: Ian Elliott <ianelliott@google.com>
Commit-Queue: Ian Elliott <ianelliott@google.com>