Shader cleanup

core/assets/shaders/planet.vert

@@ -0,0 +1,19 @@
+attribute vec4 a_position;
+attribute vec3 a_normal;
+attribute vec4 a_color;
+
+uniform mat4 u_proj;
+uniform mat4 u_trans;
+uniform vec3 u_lightdir;
+uniform vec3 u_ambientColor;
+
+varying vec4 v_col;
+
+const vec3 diffuse = vec3(0.2);
+
+void main(){
+	vec3 norc = u_ambientColor * (diffuse + vec3(clamp((dot(a_normal, u_lightdir) + 1.0) / 2.0, 0.0, 1.0)));
+
+	v_col = a_color * vec4(norc, 1.0);
+    gl_Position = u_proj * u_trans * a_position;
+}