light.inc.frag: Fix adsModel usage

adsModel is by used by phongFunction with worldView parameter, not
worldEye.

This fixed is copied from qt3d shader source code.

The tests are updated to take into account this change.

src/3d/shaders/light.inc.frag

@@ -102,7 +102,7 @@ void adsModelNormalMapped(const in vec3 worldPos,
 
 void adsModel(const in vec3 worldPos,
               const in vec3 worldNormal,
-              const in vec3 worldEye,
+              const in vec3 worldView,
               const in float shininess,
               out vec3 diffuseColor,
               out vec3 specularColor)
@@ -112,7 +112,6 @@ void adsModel(const in vec3 worldPos,
 
     // We perform all work in world space
     vec3 n = normalize(worldNormal);
-    vec3 v = normalize(worldEye - worldPos);
     vec3 s = vec3(0.0);
 
     for (int i = 0; i < lightCount; ++i) {
@@ -160,7 +159,7 @@ void adsModel(const in vec3 worldPos,
         if (diffuse > 0.0 && shininess > 0.0) {
             float normFactor = (shininess + 2.0) / 2.0;
             vec3 r = reflect(-s, n);   // Reflection direction in world space
-            specular = normFactor * pow(max(dot(r, v), 0.0), shininess);
+            specular = normFactor * pow(max(dot(r, worldView), 0.0), shininess);
         }
 
         // Accumulate the diffuse and specular contributions