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instruction, extend the 2 bit rsw field to 3 bit like used in other places. While here, also fix up rsw (negation), dph and try to fix up rsq with negative values (doesn't work, bug seems elsewhere) in the sse codegen code.
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instructions to the various internal tables. It does not add support for
them to the parser nor does it add support for them to the program
interpreter.
It also corrects some errors in the comments in program_instruction.h.
This patch breaks the instruction union in t_vb_arbprogram.h. The opcode
field in that union was only 6 bits. When there were only 59+3 instructions
that worked fine. However, this patch increases the base instruction count
to 69. This requires 7 bits. The problem is that increasing the opcode
width to 7 bits increases the size of instruction::rsw to 33 bits. I've
increased the size of the union to 64-bit, but this is just a temporary hack
(and probably breaks the build on some systems).
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Based on patch by Ian (#4967) but also unify instruction opcodes.
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arb_vp_machine struct
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opcodes. When enabled via environment vars, gears runs and almost
looks right but other apps are still quite buggy.
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vertex_program struct.
Allow switching between regular and vertex_program implementations
of fixed function TNL with the MESA_TNL_PROG environment var
(previously this required recompilation).
Ensure program compilation only references program data, not the
wider context. This means that compiled programs only need to be
invalidated when the program string changes, not on other state
changes.
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and only active when _TNL_FIXED_FUNCTION_PROGRAM is defined *and*
the MESA_EXPERIMENTAL environment variable is set...
Works for the arbfplight demo at least.
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