[Bug 97232] Line rendering broken in Dolphin when using gl_ClipDistance

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Thu Aug 11 14:46:31 UTC 2016


--- Comment #9 from Ilia Mirkin <imirkin at alum.mit.edu> ---
(In reply to Jules Blok from comment #6)
> (In reply to Ilia Mirkin from comment #5)
> > Curiously, with the below patch on top of what's in the dolphin pr, that
> > still fails on i965/snb, and still passes with llvmpipe.
> I should've mentioned that I've already tried that in the past, it didn't
> help.

Irrespective of that, the current logic in the PR in question is strictly
wrong. The fact that it renders anything anywhere when a GS is active is
relying on undefined behavior (since clip distance 0 is enabled, and nothing is
written to it from the last stage).

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