Comment # 9
on bug 83510
from Henri Verbeet
(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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