diff --git a/naga/src/proc/constant_evaluator.rs b/naga/src/proc/constant_evaluator.rs
index 5b461075e7..a9e6c7fb12 100644
--- a/naga/src/proc/constant_evaluator.rs
+++ b/naga/src/proc/constant_evaluator.rs
@@ -1308,9 +1308,43 @@ impl<'a> ConstantEvaluator<'a> {
             // vector
             crate::MathFunction::Cross => self.cross_product(arg, arg1.unwrap(), span),
 
-            fun => Err(ConstantEvaluatorError::NotImplemented(format!(
-                "{fun:?} built-in function"
-            ))),
+            // unimplemented
+            crate::MathFunction::Atan2
+            | crate::MathFunction::Modf
+            | crate::MathFunction::Frexp
+            | crate::MathFunction::Ldexp
+            | crate::MathFunction::Dot
+            | crate::MathFunction::Outer
+            | crate::MathFunction::Distance
+            | crate::MathFunction::Length
+            | crate::MathFunction::Normalize
+            | crate::MathFunction::FaceForward
+            | crate::MathFunction::Reflect
+            | crate::MathFunction::Refract
+            | crate::MathFunction::Mix
+            | crate::MathFunction::SmoothStep
+            | crate::MathFunction::Inverse
+            | crate::MathFunction::Transpose
+            | crate::MathFunction::Determinant
+            | crate::MathFunction::QuantizeToF16
+            | crate::MathFunction::ExtractBits
+            | crate::MathFunction::InsertBits
+            | crate::MathFunction::Pack4x8snorm
+            | crate::MathFunction::Pack4x8unorm
+            | crate::MathFunction::Pack2x16snorm
+            | crate::MathFunction::Pack2x16unorm
+            | crate::MathFunction::Pack2x16float
+            | crate::MathFunction::Pack4xI8
+            | crate::MathFunction::Pack4xU8
+            | crate::MathFunction::Unpack4x8snorm
+            | crate::MathFunction::Unpack4x8unorm
+            | crate::MathFunction::Unpack2x16snorm
+            | crate::MathFunction::Unpack2x16unorm
+            | crate::MathFunction::Unpack2x16float
+            | crate::MathFunction::Unpack4xI8
+            | crate::MathFunction::Unpack4xU8 => Err(ConstantEvaluatorError::NotImplemented(
+                format!("{fun:?} built-in function"),
+            )),
         }
     }