Vulkan: Workaround Overlay draw issue on Android On Android vector[n] translates to vector[0] likely due to a driver bug. This resulted in text such as: 12345678abcdefghijklmnopqrstuvwx to render as: 1234123412341234ijklijklijklijkl It also made graph data flicker. As a workaround, the shader now does an if-else on the value of n and uses a constant to load the appropriate component of the vector. Bug: angleproject:5690 Change-Id: Idb891e726fafa896a1064ef7b2941b8fd1c41ed1 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2725769 Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org> Reviewed-by: Jamie Madill <jmadill@chromium.org>