Add more interval functions

tape-load/src/spirv_compilers/mod.rs

@@ -1,5 +1,5 @@
 //pub(crate) mod gradient;
-//pub(crate) mod interval;
+pub(crate) mod interval;
 pub(crate) mod point;
 
 #[derive(Debug, Clone, Copy)]
@@ -8,6 +8,7 @@ pub(crate) struct SpirVTypes {
     pub void:             u32,
     pub float:            u32,
     pub bool:             u32,
+    pub choice:           u32,
     pub vec2:             u32,
     pub vec3:             u32,
     pub vec4:             u32,

tape-load/src/ssa.rs

@@ -477,6 +477,7 @@ impl SSATape {
         let void = b.type_void();
         let float = b.type_float(32);
         let bool = b.type_bool();
+        let choice = b.type_int(2, 0);
         let vec2 = b.type_vector(float, 2);
         let vec3 = b.type_vector(float, 3);
         let vec4 = b.type_vector(float, 4);
@@ -490,6 +491,7 @@ impl SSATape {
             void,
             float,
             bool,
+            choice,
             vec2,
             vec3,
             vec4,

tape-load/src/types/interval.rs

@@ -552,8 +552,8 @@ impl Interval {
 
     pub fn clamp(self, min: Interval, max: Interval) -> Interval {
         Interval::new(
-            self.lower.simd_clamp(min.lower, max.lower),
+            self.lower.simd_clamp(min.lower, max.upper),
-            self.upper.simd_clamp(min.upper, max.upper),
+            self.upper.simd_clamp(min.lower, max.upper),
         )
     }
 }