[PATCH 1/4] wined3d: Handle fog_start == fog_end with table fog

Stefan Dösinger stefan at codeweavers.com
Sat Jun 15 04:01:10 CDT 2013

Am 15.06.2013 um 10:40 schrieb Henri Verbeet <hverbeet at gmail.com>:
> Why is this needed? When end == start I'd expect (end - c) / (end -
> start) to evaluate to +/-INF, and then get clamped to [0, 1], which is
> pretty much what you'd want. In my (very limited) testing, that's also
> what actually happens with at least the GLSL backend.
When I looked at the same problem back in 2007, the GL fixed function pipeline disabled fog when start == end. Admittedly I did not re-test that assumption. I'll have a look at it later today.

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