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TGSI shaders are translated into SPE instructions which are then sent to
the SPEs for execution. Only a few opcodes work, no swizzling yet, no
support for constants/immediates, etc.
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Do code generation for alpha test, z test, stencil, blend, colormask
and framebuffer/tile read/write as a single code block.
Ian's previous blend/z/stencil test code is still there but mostly disabled
and will be removed soon.
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Alpha test is currently broken because all per-fragment testing occurs
before alpha is calculated.
Stencil test is currently broken because the Z-clear code asserts if
there is a stencil buffer.
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Also, re-org of texture/surface functions.
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Building on Ian's Cell build fix.
Put libcell.a in the gallium/drivers/cell/ directory.
General Makefile clean-up, simplification, updated comments.
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Doubles are still unsupported.
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Update the Makefiles and includes for the new paths.
Note that there hasn't been no separation of the Makefiles yet, and make is
jumping all over the place. That will be taken care shortly. But for now, make
should work. It was tested with linux and linux-dri. Linux-cell and linux-llvm
might require some minor tweaks.
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This is in a separate commit to ensure renames are properly preserved.
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