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nak: Use c == 0x0 for shuffle_up

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The bounds check on SHFL.UP is from below, so we actually want
maxLane == 0.

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/26264>
This commit is contained in:
Faith Ekstrand 2023-11-17 10:53:53 -06:00 • committed by Marge Bot
parent 8c79d616bd
commit 11bcce9461
1 changed files with 6 additions and 2 deletions
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8
src/nouveau/compiler/nak_from_nir.rs
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@ -1868,14 +1868,18 @@ impl<'a> ShaderFromNir<'a> {
in_bounds: Dst::None,
src: data,
lane: idx,
c: 0x1f.into(),
c: if intrin.intrinsic == nir_intrinsic_shuffle_up {
0.into()
} else {
0x1f.into()
},
op: match intrin.intrinsic {
nir_intrinsic_read_invocation
| nir_intrinsic_shuffle => ShflOp::Idx,
nir_intrinsic_shuffle_down => ShflOp::Down,
nir_intrinsic_shuffle_up => ShflOp::Up,
nir_intrinsic_shuffle_xor => ShflOp::Bfly,
_ => panic!("Unknown vote intrinsic"),
op => panic!("Unknown shuffle intrinsic {}", op),
},
});
self.set_dst(&intrin.def, dst);