[Mesa-dev] mesa/st: support lowering user-clip-planes automatically

[Ilia Mirkin]

Hey Erik,

Just saw your change
https://cgit.freedesktop.org/mesa/mesa/commit/?id=3298aedd6e9f12cefd5aa7414eeebf69ce7538d1
. It looks like you assume that the UCPs will apply in the vertex
stage, but given that we support GL compat profiles for GL 4.0+ in
st/mesa, the UCPs actually apply to the same stage that clip distances
are processed in -- might be TES or GS, depending on the pipeline.

Perhaps there's some reason why this works anyways that I'm not seeing...

Cheers,

  -ilia