The patch extends the OutputHLSL and DynamicHLSL translators to select the viewport index in the geometry shader and propagate the ViewID variable to the fragment shader. BUG=angleproject:2062 TEST=angle_end2end_tests Change-Id: I9e344a7521e2e1137e6eb38d0bfecea8bece778f Reviewed-on: https://chromium-review.googlesource.com/608967 Commit-Queue: Martin Radev <mradev@nvidia.com> Reviewed-by: Olli Etuaho <oetuaho@nvidia.com> Reviewed-by: Jamie Madill <jmadill@chromium.org> Reviewed-by: Geoff Lang <geofflang@chromium.org>
