Force normalization of normals (shaders)

Babylon/Shaders/default.fragment.fx

@@ -437,7 +437,7 @@ void main(void) {
 #endif
 
 	// Bump
-	vec3 normalW = vNormalW;
+	vec3 normalW = normalize(vNormalW);
 
 #ifdef BUMP
 	normalW = perturbNormal(viewDirectionW);

Babylon/Shaders/legacydefault.fragment.fx

@@ -340,7 +340,7 @@ void main(void) {
 #endif
 
 	// Bump
-	vec3 normalW = vNormalW;
+	vec3 normalW = normalize(vNormalW);
 
 	// Ambient color
 	vec3 baseAmbientColor = vec3(1., 1., 1.);