glamor core profile support

[Dave Airlie]

On 19 January 2016 at 10:56, Dave Airlie <airlied at gmail.com> wrote:
> This series implements support for glamor in ephyr/EGL/Xwayland
> to use GL core profile when it can.
>
> This required 4 main changes:
> a) stop using client ptrs everywhere, I found 3 places left,
> gradient, picture and xv where we use these.
> b) start using VAOs
> c) use GL_RED instead of GL_ALPHA
> d) stop using GL_QUADS.
>
> These patches are also in my glamor-core-profile branch.

I've updated the branch with some fixes for things people pointed out so far.

I've also made it use GL 3.1 instead of 3.3 at Ilia's request. I don't
think this
should be an issue until we need geom shaders :-)

Dave.