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The code's cleaner and a step toward supporting float-valued texture sampling.
Some optimizations for common cases can be added and re-enabled...
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This is another step toward removing a whole bunch of -I flags from
the cc commands. Still need to address driver code...
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of -I flags.
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Conflicts:
src/mesa/main/state.c
src/mesa/shader/program.c
src/mesa/shader/program.h
src/mesa/shader/programopt.c
src/mesa/shader/slang/slang_execute.c
src/mesa/sources
src/mesa/swrast/s_arbshader.c
src/mesa/swrast/s_context.c
src/mesa/swrast/s_span.c
src/mesa/swrast/s_zoom.c
src/mesa/tnl/t_context.c
src/mesa/tnl/t_save_api.c
src/mesa/tnl/t_vb_arbprogram.c
src/mesa/tnl/t_vp_build.c
src/mesa/tnl/t_vtx_eval.c
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Replace texcoord[], varying[], etc. arrays with single attribs[] array, indexed
by FRAG_ATTRIB_* values.
Eliminates need to copy data into fragment program machine input registers.
Will lead to future clean-ups.
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Add support for runtime colorbuffer types.
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was later discarded by z test (this fixes doom3 r200 renderpath with swrast). Fix calling _swrast_alpha_test potentially leading to bogus results when Alpha Test might not be enabled. While here, don't disable deferred_texture (early z) when ATI_fragment_shader is active, as it is not necessary (for the record, this boosts doom3 swrast performance by roughly a factor of 2 (4 seconds per frame now...) with the r200 render path, might be a worthwile optimization for fragment programs which don't write z).
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program->Id and program->RefCount fields were used and ATI fragment shaders
didn't have too much in common with ARB/NV vertex/fragment programs anyway.
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No need to pass the texture unit number as an argument.
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ATI_fs instructions.
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later applied srcRep)
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changes). Fix sampling from wrong texture unit. Apply swizzling before texture sampling, and hopefully get non-projected coordinates from swrast. (still does not work at all with sw doom3, way too dark just the same as with the doom3 arb2 path)
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scope of ati fragment shader constants. Fix issues with specifying color/alpha instructions not pair-wise. Change internal representation of the shader (to better fit how the extension works, should make driver implementations simpler, and saves some memory). (still doesn't work correctly with doom3 and swrast, but not worse than before)
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no error detection, slow, may not be 100% correct but a good start
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