[Mesa-dev] [RFC PATCH] mesa/gl3: introduce a new option to the gl3 version enable.

[Dave Airlie]

>
> EXT_texture_integer isn't strictly equivalent to GL3, the L/I/A integer
> formats are not required in GL3, and some drivers may not require them.
>
> I've no idea if we have any hw that requires it, just sending the patch along
> after discussion on irc.

Another reason was mentioned on irc, EXT_texture_integer claims to
require EXT_gpu_shader4 in its specification, so I'm not sure we
should be exposing it without EXT_gpu_shader4 even in the presence of
GL3.

Dave.