Impl. more component-wise built-ins in const. eval.

CHANGELOG.md

@@ -37,6 +37,30 @@ Bottom level categories:
 - Hal
 -->
 
+## Unreleased
+
+### New features
+
+- Many numeric built-ins have had a constant evaluation implementation added for them, which allows them to be used in a `const` context:
+    - [#4879](https://github.com/gfx-rs/wgpu/pull/4879) by @ErichDonGubler:
+        - `abs`
+        - `acos`
+        - `acosh`
+        - `asin`
+        - `asinh`
+        - `atan`
+        - `atanh`
+        - `cos`
+        - `cosh`
+        - `round`
+        - `saturate`
+        - `sin`
+        - `sinh`
+        - `sqrt`
+        - `step`
+        - `tan`
+        - `tanh`
+
 ## v0.19.0 (2024-01-17)
 
 This release includes:

naga/Cargo.toml

@@ -60,6 +60,7 @@ petgraph = { version = "0.6", optional = true }
 pp-rs = { version = "0.2.1", optional = true }
 hexf-parse = { version = "0.2.1", optional = true }
 unicode-xid = { version = "0.2.3", optional = true }
+arrayvec.workspace = true
 
 [target.'cfg(not(target_arch = "wasm32"))'.dev-dependencies]
 criterion = { version = "0.5", features = [] }

naga/src/lib.rs

@@ -458,6 +458,10 @@ pub enum VectorSize {
     Quad = 4,
 }
 
+impl VectorSize {
+    const MAX: usize = Self::Quad as u8 as usize;
+}
+
 /// Primitive type for a scalar.
 #[repr(u8)]
 #[derive(Clone, Copy, Debug, Hash, Eq, Ord, PartialEq, PartialOrd)]