Basic vertex/fragment shader I/O and sysval allocation rewritten to use
the new compiler/driver interface, with allocation moved entirely into
the driver.
RHW coeffs now only emitted when required.
Boilerplate support for converting formats for vs inputs/fs outputs.
Signed-off-by: Simon Perretta <simon.perretta@imgtec.com>
Acked-by: Frank Binns <frank.binns@imgtec.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/32258>
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