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nir/gather_tcs_info: use nir_analyze_fp_class directly

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The information around positive one helps in theory.

Reviewed-by: Alyssa Rosenzweig <alyssa.rosenzweig@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/39987>
This commit is contained in:
Georg Lehmann 2026-02-12 11:56:35 +01:00 • committed by Marge Bot
parent 08cac48170
commit 58799c4e7c
1 changed files with 7 additions and 18 deletions
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25
src/compiler/nir/nir_gather_tcs_info.c
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@ -458,29 +458,18 @@ nir_gather_tcs_info(const nir_shader *nir, nir_tcs_info *info,
continue;
}
const struct fp_result_range r =
nir_analyze_fp_range(&range_ht, scalar.def);
fp_class_mask fp_class =
nir_analyze_fp_class(&range_ht, scalar.def);
switch (r.range) {
case unknown:
case ge_zero:
case ne_zero:
default:
if (fp_class & (FP_CLASS_ANY_NEG | FP_CLASS_ANY_ZERO | FP_CLASS_NAN))
tess_level_writes_le_zero |= BITFIELD_BIT(shift);
if (fp_class & (FP_CLASS_GT_ZERO_LT_POS_ONE | FP_CLASS_POS_ONE))
tess_level_writes_le_one |= BITFIELD_BIT(shift);
if (fp_class & (FP_CLASS_GT_POS_ONE | FP_CLASS_POS_INF)) {
tess_level_writes_le_two |= BITFIELD_BIT(shift);
tess_level_writes_gt_two |= BITFIELD_BIT(shift);
break;
case lt_zero:
case le_zero:
case eq_zero:
tess_level_writes_le_zero |= BITFIELD_BIT(shift);
break;
case gt_zero:
tess_level_writes_le_one |= BITFIELD_BIT(shift);
tess_level_writes_le_two |= BITFIELD_BIT(shift);
tess_level_writes_gt_two |= BITFIELD_BIT(shift);
break;
}
}
}