[virglrenderer-devel] first posting compute, fb no attach and glsl 4.30 support

[Dave Airlie]

Now that images have landed, this is the last chunk of the GLES3.1
enablement that I have here.

It's in my tree on top of the sampler array rework, but should work
out fine.

https://gitlab.freedesktop.org/airlied/mesa/tree/gles31-submit
has the mesa patches (commit msg need a bit of cleanup).

Dave.