[Mesa-dev] [Bug 94955] Uninitialized variables leads to random segfaults (valgrind log, apitrace attached)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=94955

--- Comment #18 from Roland Scheidegger <sroland at vmware.com> ---
(In reply to Bruce Cherniak from comment #16)
> BTW, for my edification, what indicates it might be a bug in the mip level
> calculation?

That was just a guess as it hit the per-pixel mip computations, which was odd -
in fact the texture was explicitly marked as having one level only, so I
figured maybe there's something wrong with that logic there, as there was
plenty of unnecessary instructions (8 shifts, 8 max, some more - despite that
we actually know the result of all this has to be zero anyway). But it's kinda
expected actually so was correct, albeit some day might want to improve that
(and was in different sampling code, I totally missed that...).

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