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We only care about the actual fogcoord itself now, reducing the rewriting
done for the vertex program.
The rewriting of source operand swizzles in the fragment program takes
care that fogcoord.yzw = 001.
This should fix fogcoord rewriting entirely, which had been horribly
broken in the face of dot-product instructions, and just broken (though
not horribly so) in the face of almost every other instruction (the W
component would be incorrect for most arithmetic instructions).
Signed-off-by: Nicolai Hähnle <nhaehnle@gmail.com>
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Reported-by: Nicolai Hähnle <nhaehnle@gmail.com>
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Rewrite vertex and fragment programs so that we don't have to do any hacks on lower level.
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Be consistent with function naming: use Setup/Emit names for functions that modify hardware state
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This was broken with last merge see f48473e42511f8d37a239a07f791bc0a87209e5b
for explanations.
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