From: bugzilla-daemon@freedesktop.org
To: dri-devel@lists.freedesktop.org
Subject: [Bug 83510] Graphical glitches in Unreal Engine 4
Date: Thu, 04 Dec 2014 13:38:16 +0000 [thread overview]
Message-ID: <bug-83510-502-upauehk65F@http.bugs.freedesktop.org/> (raw)
In-Reply-To: <bug-83510-502@http.bugs.freedesktop.org/>
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https://bugs.freedesktop.org/show_bug.cgi?id=83510
--- Comment #9 from Henri Verbeet <hverbeet@gmail.com> ---
(In reply to Marek Olšák from comment #8)
> (In reply to Christoph Haag from comment #7)
> > I think in the new "Lightroom Interior" the blackness glitch is visible in a
> > more interesting way:
> > https://www.youtube.com/watch?v=R9N-srsF_Fg
>
> I think I've tracked down what's causing the blackness in all Unreal Engine
> demos: Division by zero.
>
I didn't debug this of course, but it seems suspicious that this would depend
on division be zero returning zero instead of infinity. I don't think any other
driver for current hardware does that with GLSL. Are you sure there's not a
subsequent multiplication by zero that depends on INF * 0 returning 0 instead
of NAN?
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next prev parent reply other threads:[~2014-12-04 13:38 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-04 19:47 [Bug 83510] New: Graphical glitches in Unreal Engine 4 bugzilla-daemon
2014-09-04 19:48 ` [Bug 83510] " bugzilla-daemon
2014-09-04 19:52 ` bugzilla-daemon
2014-09-04 19:56 ` bugzilla-daemon
2014-09-04 20:00 ` bugzilla-daemon
2014-09-05 19:25 ` bugzilla-daemon
2014-10-02 17:02 ` bugzilla-daemon
2014-11-25 9:43 ` bugzilla-daemon
2014-12-04 12:32 ` bugzilla-daemon
2014-12-04 13:38 ` bugzilla-daemon [this message]
2014-12-04 14:01 ` bugzilla-daemon
2014-12-04 14:13 ` bugzilla-daemon
2014-12-29 20:49 ` bugzilla-daemon
2015-01-06 8:30 ` bugzilla-daemon
2015-01-07 1:10 ` bugzilla-daemon
2015-01-15 15:19 ` bugzilla-daemon
2015-01-16 14:01 ` bugzilla-daemon
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