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ac/nir/lower_ngg: never export edge flags via position exports

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It has no effect, but the extra export instructions is unnecessary and
we can't gather the effective number of position exports from NIR if we
insert incorrect exports.

Acked-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com>
Reviewed-by: Timur Kristóf <timur.kristof@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/35351>
This commit is contained in:
Marek Olšák 2025-05-27 06:31:35 -04:00 • committed by Marge Bot
parent a742b859bd
commit 7c3760201d
1 changed files with 1 additions and 0 deletions
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src/amd/common/nir/ac_nir_lower_ngg.c
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@ -1761,6 +1761,7 @@ ac_nir_lower_ngg_nogs(nir_shader *shader, const ac_nir_lower_ngg_options *option
}
uint64_t export_outputs = shader->info.outputs_written | VARYING_BIT_POS;
export_outputs &= ~VARYING_BIT_EDGE; /* edge flags are never exported via pos with NGG */
if (options->kill_pointsize)
export_outputs &= ~VARYING_BIT_PSIZ;
if (options->kill_layer)