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Based on Julien Pommier's SSE and SSE2 algorithms.
Signed-off-by: José Fonseca <jfonseca@vmware.com>
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So taking the function address does not work.
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Also start axing the code duplication for scalar case. The olution is to
treat the scalar case specially in a few innermost functions, and leave
outer functions untouched.
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The advantage of range[-0.5, 0.5] is that it doesn't require floor (for
which intrinsics are only available in SSE4.1).
But the EXP opcode pretty much forces us to use floor, and there is a
good floor approximation around truncation available anyway.
This fixes EXP failures in VShader DCT.
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A quick hack to get the right results, as there are many DCT tests
which use these opcodes to generate data to test other opcodes.
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Disabled as it doesn't make VS/PSPrecision DCT happy, and it would
unnecessarily slow some cases where it is not needed.
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Runtime linking doesn't quite work.
Just comment then out for now to prevent crashes. These will go away in
the future because calling 4 times CRT's cosf()/sinf() is over-precise
and under-performing.
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As the argument in general might not be a constant.
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We were never returning -1 as a result. This fixes some inverted/flipped
faces with cube mapping.
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LLVMBuildFPTrunc() should be used for double->float conversion, not
float->int conversion.
There should be a better way to compute floor(), ceil(), etc that doesn't
involve float->int->float conversion.
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The LOD is computed from texcoord partial derivatives and used to
select a mipmap level. Still some bugs in texel fetching. Lots of
rough edges and unfinished parts but the basics are in place.
Lots of changes to the lp_bld_arit.c code to support non-vector/scalar
datatypes.
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the llvmpipe tgsi translation is a lot more complete than what was in
gallivm so replacing the latter with the former. this is needed since
the draw llvm paths will use the same code. effectively the proven
llvmpipe code becomes gallivm.
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