[PATCH 3/9] wined3d: Implement color keying in arbfp_blit.

[Stefan Dösinger]

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Am 2015-04-10 um 00:13 schrieb Matteo Bruni:
> SGE compare.r, color.a, color_key.a;
> SGE compare.g, -color.a, -color_key.a;
> MUL compare, compare.r, compare.g;
You're half right. I need two - in the second compare. I think that's a
leftover from when I had a SUB tmp, color.a, color_key.a and then
compared against 0.0. However, the - in the MUL instruction is correct
because KIL discards if the argument is < 0.0.
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