mesa/main: make ffvertex output nir

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There's little point in going from fixed-function to ARB progs just to
convert it to NIR in the end. So let's emit NIR code directly here
instead.

This all made sense back when we had DRI drivers that didn't use NIR at
all in the tree, but these days we unconditionally call prog_to_nir.

Since we're no longer generating something that resembles ARM asm
shaders, we also no longer pass is_arb_asm as true to NewProgram. But
we still require legacy math rules, so we set use_legacy_math_rules in
the shader_info instead. This should do the same thing, but
communicates exactly what we actually need rather than having a half-
truth about the source of the shader.

Acked-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Emma Anholt <emma@anholt.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/22520>

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This commit is contained in:

Erik Faye-Lund

2023-02-15 14:47:53 +01:00

committed by Marge Bot

parent 7610747e94

commit c5b3d488f9

1 changed files with 620 additions and 906 deletions

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src/mesa/main/ffvertex_prog.c

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