tree 9c34cc76aeddc11cb0dbdc780e190d179bd139ce
parent bb0775da28e3305ef0466f3542a60e3559aaf79f
author Olli Etuaho <oetuaho@nvidia.com> 1510156038 +0200
committer Commit Bot <commit-bot@chromium.org> 1510479821 +0000

Unify extension behavior checks

Some supportsExtension and isExtensionEnabled checks are now turned
into checkCanUseExtension checks. Using checkCanUseExtension is
preferable so that warnings are generated correctly when an extension
is used and a warn directive is present.

isExtensionEnabled is still used in some places where an error message
about the extension could be confusing, particularly when a core spec
version adds support for something that is also present in an
extension.

Also make it possible to disable ARB_texture_rectangle extension using
an extension directive. ARB_texture_rectangle extension functionality
is enabled by default in GLSL when the extension is supported.

BUG=angleproject:2238
TEST=angle_unittests

Change-Id: I7455293412ff469f54bc7da79df146e7bc127379
Reviewed-on: https://chromium-review.googlesource.com/760737
Commit-Queue: Olli Etuaho <oetuaho@nvidia.com>
Reviewed-by: Jamie Madill <jmadill@chromium.org>