Test shadow sampler + 3D sampler in the same shader
Test shadow sampler + 3D sampler in the same shader

Shadow samplers use a different sampler object type in D3D11 HLSL than
other ESSL samplers. They need to be able to coexist in the same shader.

BUG=angleproject:1261
TEST=angle_end2end_tests

Change-Id: I960f6a41c0237ed912b072527e14aebeca98cf7c
Reviewed-on: https://chromium-review.googlesource.com/322120
Tryjob-Request: Olli Etuaho <38ae6c0e2772a20e8e989f80cb8c99d274e44242@nvidia.com>
Tested-by: Olli Etuaho <38ae6c0e2772a20e8e989f80cb8c99d274e44242@nvidia.com>
Reviewed-by: Jamie Madill <7e492b4f1c8458024932de3ba475cbf015424c30@chromium.org>
Reviewed-by: Zhenyao Mo <655bdf1d95ff956cd68886dd9e86ee5e987c9dbb@chromium.org>

ecoal95/angle,ppy/angle,ppy/angle,ecoal95/angle,MSOpenTech/angle,ecoal95/angle,mlfarrell/angle,MSOpenTech/angle,ecoal95/angle,mlfarrell/angle,mikolalysenko/angle,ecoal95/angle,mikolalysenko/angle,ppy/angle,mlfarrell/angle,mlfarrell/angle,domokit/waterfall,MSOpenTech/angle,domokit/waterfall,MSOpenTech/angle,mikolalysenko/angle,mikolalysenko/angle,ppy/angle