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(fragment ops).
This is very much like the clipper/setup pipeline for primitives.
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It's OK to use _TexEnvProgram regardless of the texture state, but if fog
is also enabled, the fragment program is lacking the actual fog computation
so fogging doesn't appear.
Fixing this might involve a new _MaintainFogProgram field and related code.
For now, just disable the _TexEnvProgram and let swrast handle everything.
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problem)
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We should be able to render to any depth/format of X window now.
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Used for depth test, alpha test, stencil test, shadow test, etc.
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softpipe->viewport.
The previous memcpy() was incorrect since it only copied 4 bytes instead of 32.
With struct assignment we avoid data size errors.
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Some git wierdness going on.
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softpipe/state_tracker --> state_tracker/
softpipe/ --> pipe/
softpipe/generic --> pipe/softpipe/
I don't think pipe is a great name, but I disliked all the others too.
Luckily it's fairly easy to rename with git, so this can be revisited
later.
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And some comments on point sprites.
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a goto
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state validation/update.
Note that we're still temporarily skipping the test for an active fragment
program. Need to fix shadow2D() ...
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