tree 6cbc08ad3fb8b399498ad0cb0b8513552332113b
parent b38dfde0a7237c32b9d6341e834276f486dc7948
author Olli Etuaho <oetuaho@nvidia.com> 1513882298 +0200
committer Commit Bot <commit-bot@chromium.org> 1515494925 +0000

Add a workaround to clamp gl_FragDepth

NVIDIA OpenGL drivers at least up to version 388.59 don't clamp
gl_FragDepth when it is written to a floating point depth buffer.
This bug is now worked around by clamping gl_FragDepth in the shader
if it is statically used.

BUG=angleproject:2299
TEST=angle_end2end_tests on NVIDIA

Change-Id: I61589b2b0dd2813c4901a157c8d37e470063773c
Reviewed-on: https://chromium-review.googlesource.com/840842
Commit-Queue: Olli Etuaho <oetuaho@nvidia.com>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>