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ANGLE shouldn't reserves built-in special variables from GL_MAX_VARYING_VECTORS #951

Open GoogleCodeExporter opened 9 years ago

GoogleCodeExporter commented 9 years ago 
To quote Jamie:

Hey Austin, I checked with the Khronos mailing lists and confirmed that a 
statically used gl_PointCoord does take up space in the maximum varying 
vectors, so we don't need to reserve a slot. The packing algorithm also 
considers FragCoord a vec4 and PointCoord a vec2. So that might affect some 
edge-cases with a user vec2 and PointCoord.

I'm not sure but there may not be dEQP or WebGL tests covering these corner 
cases, I'll bring it up with someone and see if we have coverage outside ANGLE.

Original issue reported on code.google.com by aukin...@microsoft.com on 18 Mar 2015 at 5:22