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.
- Expand operand argument specifiers so that all registers and
parameters can be referenced directly. Remove old PAR/PRL
instructions.
- No 3 operand instructions, translate MAD -> MUL, ADD. (No room for
3 full operands in instruction struct).
- Translate SWZ instructions into 1 or 2 reduced swizzles at compile
time.
- Add hardwired code for moving input and output values to/from the
register file. Drop old INx, OUT instructions.
- remove input/output fields, input tracking removed.
- remove state fields, the validate function now called
on every statechange.
- add an explicit 'create' function.
Add in code to build vertex program to implement current t&l state. Still
disabled, but turn on with a #define in t_vp_build.h.
