Pavel Ondračka 806dcf9db7 r300: only output wpos in vertex shaders when needed
Right now we always copy pos to wpos regardless of if the fragment
shader needs it or not. Instead just do it only for the shaders
that really need it.

Shader-db is not able to measure preciselly the effect as we
build only the non-wpos variants, but given that majority of fragment
shaders don't needs the wpos, the real effect should be close:

total instructions in shared programs: 105427 -> 104313 (-1.06%)
instructions in affected programs: 53098 -> 51984 (-2.10%)
total temps in shared programs: 13991 -> 13958 (-0.24%)
temps in affected programs: 114 -> 81 (-28.95%)

Signed-off-by: Pavel Ondračka <pavel.ondracka@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/15321>
2022-03-29 21:37:24 +00:00
2022-03-29 07:59:23 -04:00
2022-01-19 15:17:17 +00:00
2022-02-02 22:49:09 +00:00

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