A750 expects driver params loaded through the preamble, old path
does work but has issues when the same LOAD_STATE is used between
several draw calls (it seems that LOAD_STATE is executed only for
the first draw call).
To solve this we now lower driver params to UBOs and let NIR deal with
them.
Notes:
- VS params are loaded via old path since blob do the same and there
are no issues observed.
- FDM is not supported at the moment.
- For now driver params data is emitted via CP_NOP because it's tricky
to allocate space for the data. (It is emitted when we are already in
sub_cs)
Co-Authored-By: Connor Abbott <cwabbott0@gmail.com>
Signed-off-by: Danylo Piliaiev <dpiliaiev@igalia.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/26934>
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