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kraid/swizzle: Add a Swizzle::is_none() helper

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Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/42274>
This commit is contained in:
Faith Ekstrand 2026-06-15 22:55:32 -04:00 • committed by Marge Bot
parent 6ab6bc94d3
commit 162d7091e9
1 changed files with 11 additions and 5 deletions
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16
src/panfrost/compiler/kraid/swizzle.rs
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@ -328,6 +328,12 @@ impl Swizzle {
}
}
/// Returns true if this is the none (identity) swizzle
#[inline]
pub const fn is_none(&self) -> bool {
self.packed.get() == Swizzle::NONE.packed.get()
}
/// Returns true if this is a word swizzle.
#[inline]
pub const fn is_word_swizzle(&self) -> bool {
@ -356,7 +362,7 @@ impl Swizzle {
#[inline]
pub const fn word(&self, idx: u8) -> Option<SwizzleWord> {
assert!(idx < 2);
if self.packed.get() == Self::NONE.packed.get() {
if self.is_none() {
Some(SwizzleWord::word(idx))
} else if self.is_word_swizzle() {
let b = ((self.packed.get() >> (idx * 4)) & 0xf) as u8;
@ -603,7 +609,7 @@ impl Swizzle {
}
pub fn fold_u64(&self, u: u64) -> Option<u64> {
if *self == Swizzle::NONE {
if self.is_none() {
return Some(u);
}
@ -678,9 +684,9 @@ impl Swizzle {
/// possible (such as if doing so would result in an invalid float widen),
/// `None` is returned.
pub fn swizzle(self, other: Swizzle) -> Option<Swizzle> {
if other == Swizzle::NONE {
if other.is_none() {
return Some(self);
} else if self == Swizzle::NONE {
} else if self.is_none() {
return Some(other);
}
@ -728,7 +734,7 @@ impl Default for Swizzle {
impl fmt::Display for Swizzle {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
if *self == Swizzle::NONE {
if self.is_none() {
Ok(())
} else if self.is_word_swizzle() {
let mut is_words = true;