fixed saturation of the cubemap

Author: matsuoka-601

public/cubemap/negx.png

@@ -75,7 +75,7 @@ fn fs(input: FragmentInput) -> @location(0) vec4f {
     var refractionColor: vec3f = bgColor * transmittance;
 
     let F0 = 0.02;
-    var fresnel: f32 = clamp(F0 + (1.0 - F0) * pow(1.0 - dot(normal, -rayDir), 5.0) + 0.05, 0., 1.);
+    var fresnel: f32 = clamp(F0 + (1.0 - F0) * pow(1.0 - dot(normal, -rayDir), 5.0) + 0.0, 0., 1.);
 
     var reflectionDir: vec3f = reflect(rayDir, normal);
     var reflectionDirWorld: vec3f = (uniforms.inv_view_matrix * vec4f(reflectionDir, 0.0)).xyz;