891033 - WebGL2 Edit GLContext to allow getting a GL3 context; let WebGL 2 use it

Status: RESOLVED FIXED

(Core :: Graphics: CanvasWebGL, defect)

Description

[Guillaume Abadie]

Edit GLContext to allow getting a GL3 context; let WebGL 2 use it 

See https://wiki.mozilla.org/Platform/GFX/WebGL2

Comment 1

[Guillaume Abadie]

Ok I have a big problem with that :

I had in GLContextProviderCGL.mm:62 thoses 2 following lines
NSOpenGLPFAOpenGLProfile,
NSOpenGLProfileVersion3_2Core,

And then when I run Firefox, it just abort because of GFX shaders are not OpenGL 3.2 compatible. Indeed, On Mac OS X, if we want an OpenGL 3.0 context, we can only create a OpenGL 3.2 core profile context.

This is critical because a lot of WebGL 2 features need a OpenGL 3.0 context.

Also sampler objects are available since OpenGL 3.3, but Mac OS X 10.8.4 doesn't support it at all, even by extensions unfortunately. I would need 10.9 to continue.

Comment 2

[Kelsey Gilbert [:jgilbert]]

Missing sampler objects isn't that big of a deal since we probably can't use them without ANGLE upgrades anyways.

Linux supports GL >3.2, as does Windows, so we can still do development even if we can't use it on Mac yet.