1 files changed, 11 insertions, 12 deletions
diff --git a/dev/a5-artrender/shaders/gouraud.vert b/dev/a5-artrender/shaders/gouraud.vert
index fa763cb..ca40e12 100644
--- a/dev/a5-artrender/shaders/gouraud.vert
+++ b/dev/a5-artrender/shaders/gouraud.vert
@@ -32,27 +32,26 @@ out vec4 color;
 
 
 void main() {
-    
+
     // transform the vertex position into "eye space"
-    vec3 v;
+    vec3 v = vec3(model_view_matrix * vec4(vertex, 1.0));
 
     // unit vector from the vertex to the light
-    vec3 l;
-    
+    vec3 l = normalize(light_in_eye_space - v);
     // unit vector from the vertex to the eye point, which is at 0,0,0 in "eye space"
-    vec3 e;
+    vec3 e = normalize(-v);
 
     // normal transformed into "eye space"
-    vec3 n;
-    
+    vec3 n = (normal_matrix * vec4(normal, 0)).xyz;
     // halfway vector
-    vec3 h;
-
+    vec3 h = normalize(l + e);
 
 	// calculating lighting output the color for this vertex
-    // ... 
-
-       
+    vec4 ambient = ka * Ia;
+    vec4 diffuse = kd * Id * max(dot(n, l), 0);
+    vec4 specular = ks * Is * pow(max(dot(n, h), 0), s);
+    color = ambient + diffuse + specular;
+    
     // do the standard projection of the incoming vertex
     gl_Position = proj_matrix * model_view_matrix * vec4(vertex,1);
 }