Add a ball, use actual flat shading

shaders/flat.frag

@@ -2,7 +2,7 @@
 
 in vec3 UV;
 in vec3 NORMAL;
-in vec3 LIGHT;
+flat in vec3 LIGHT;
 
 out vec4 FragColor;
 

shaders/flat.vert

@@ -10,7 +10,7 @@ uniform mat4 PROJECTION;
 
 out vec3 UV;
 out vec3 NORMAL;
-out vec3 LIGHT;
+flat out vec3 LIGHT;
 
 struct DirectionalLight {
   vec3 direction;