[PATCH 3/4] wined3d: Add a slop for color keying.

[Stefan Dösinger]

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Am 2015-08-20 um 11:06 schrieb Henri Verbeet:
> Shouldn't you just pass the color key as a range to the shader 
> instead? E.g. in a 6 bpc format anything between 0.484f and 0.500f 
> would get quantized to 0x1f. (Which, other floating point issues 
> aside, would correspond to about 0.008 slop here. For a 5 bpc
> format you'd even have 0.016.)
That would mean two uniforms instead of one, but could help with range
color keys. I'll investigate the idea.

Otoh the idea of re-testing this stuff on old those GPUs doesn't
really appeal to me :-( .


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