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

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Thu Aug 11 16:41:40 UTC 2016


--- Comment #13 from Jules Blok <jules.blok at gmail.com> ---
(In reply to Ilia Mirkin from comment #12)
> Well, what would the clip distance value be if you didn't? You're generating
> any number of fresh vertices, and the clip distance is a per-vertex attrib.
> There's no real other way for it to work.

I assumed that, since I didn't actually change gl_ClipDistance in the geom
shader, it would just continue to use the value I had already set on the input
vertex. And it looks like most drivers do handle it like that, but as you said
that is likely undefined behavior.

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