[Mesa-dev] ARB_cull_distance support v4?

[Dave Airlie]

This is just the core patches, as I think the lowering was pretty
broken in the last couple of reposts.

The lowering now lowers to one array of 8 or whatever. I need
to recheck the gallium and llvmpipe bits on top of this, as I think
llvmpipe will be broken.

I think I'm going to rip out the CULLDIST semantic from gallium,
it really isn't what the hw wants.

Dave.