feat(const_eval): impl. trunc

gfx-rs · Jan 19, 2024 · c4df992 · c4df992
1 parent 2819927
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diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -77,6 +77,7 @@ Bottom level categories:
         - `radians`
         - `reverseBits`
         - `sign`
+        - `trunc`
 
 ## v0.19.0 (2024-01-17)
 

diff --git a/naga/src/proc/constant_evaluator.rs b/naga/src/proc/constant_evaluator.rs
@@ -1010,6 +1010,9 @@ impl<'a> ConstantEvaluator<'a> {
                     Ok([if edge <= x { 1.0 } else { 0.0 }])
                 })
             }
+            crate::MathFunction::Trunc => {
+                component_wise_float!(self, span, [arg], |e| { Ok([e.trunc()]) })
+            }
             fun => Err(ConstantEvaluatorError::NotImplemented(format!(
                 "{fun:?} built-in function"
             ))),