Restructure InstanceID initialization to fix HLSL warning This patch casts gl_InstanceID to uint before doing division by the number of views to circumvent the HLSL compiler's warning on performance degradation. BUG=angleproject:2062 TEST=angle_end2end_tests Change-Id: I326530ee112f34f82becdec5239edd5054c4104f Reviewed-on: https://chromium-review.googlesource.com/655298 Commit-Queue: Martin Radev <mradev@nvidia.com> Reviewed-by: Jamie Madill <jmadill@chromium.org>