Commit 977ee7ebdb894c4c266f1f770bb0ca2fd4ed80a7
2017-07-21T11:38:27
Add gl_ViewportIndex to the symbol table gl_ViewportIndex is a GLSL built-in that's needed to implement instanced multiview. It is a bit of a special case: it only exists in desktop GLSL and not ESSL, and it shouldn't be exposed to the parser. We add a new level to the symbol table that's hidden from the parser to make adding this kind of builtins in AST transforms consistent with the way ESSL builtins are supported. BUG=angleproject:1490 TEST=angle_unittests Change-Id: I51b2d983950b38c8e85e4b6ed00c6b39f9b3cb03 Reviewed-on: https://chromium-review.googlesource.com/580953 Commit-Queue: Olli Etuaho <oetuaho@nvidia.com> Reviewed-by: Jamie Madill <jmadill@chromium.org>