Intel GPUs enter an infinite loop unless told to flush. BUG=angleproject:1038 Change-Id: I7c3d9dd08bf1ee09cb163dd859f817379a72cd65 Reviewed-on: https://chromium-review.googlesource.com/274942Reviewed-by: Corentin Wallez <cwallez@chromium.org> Reviewed-by: Jamie Madill <jmadill@chromium.org> Tested-by: Geoff Lang <geofflang@chromium.org>
