Don't bother even trying to test legacy gl features that the hw does not
support and cannot be emulated (or at least not reasonably).
Some of this could in theory be emulated with GS shader on a6xx+, at the
cost of extra draw time overhead. But unless someone shows up with a
real world need for these features (ie. something other than piglit/cts)
I don't think we should penalize every other gl app with the extra
overhead. If you want a slow-but-implements-gl-rusty-sharp-edges driver,
zink already exists to fill that niche. (And if someone does find some
app that needs these features, the right answer is probably driconf to
trigger a transparent fallback to zink.)
Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/8850
Signed-off-by: Rob Clark <robdclark@chromium.org>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/28323>
Rob Clark
242a591d4c