renamed brick to block, world gen stuff in separate file

src/shaders/shading.cginc

@@ -1,10 +1,8 @@
 /*
 *   Returns material albedo for given voxel
 */
-vec3 getAlbedo(uint data)
-{
-    return _Materials[data-1].albedo.rgb;
-}
+vec3 getAlbedo(uint data) { return _Materials[data-1].albedo.rgb; }
+float getSpecular(uint data) { return _Materials[data-1].specular; }
 
 /*
     point: Hit point
@@ -14,12 +12,14 @@ vec3 getAlbedo(uint data)
 vec3 applyLighting(vec3 hitPoint, vec3 view, vec3 normal, uint data)
 {
     // Lighting
-    vec3 light_color = vec3(1);
+    vec3 ambientColor = vec3(0.9, 0.9, 1.0);
+    vec3 ambient = ambientColor * 0.05;
+    vec3 sky = ambientColor * 0.1 * max(normal.y, 0);
 
-    vec3 ambient = light_color * 0.1;
-    vec3 diffuse = light_color * max(1.0-dot(normal, _SunDir), 0.0);
-    vec3 specular = light_color * pow(max(dot(view, reflect(_SunDir, normal)), 0.0), 32);
+    vec3 sunColor = vec3(1.0, 1.0, 0.9);
+    vec3 diffuse = sunColor * max(1.0-dot(normal, _SunDir), 0.0);
+    vec3 specular = sunColor * getSpecular(data) * pow(max(dot(view, reflect(_SunDir, normal)), 0.0), 32);
 
     // Combine colors
-    return (ambient + diffuse + specular) * getAlbedo(data);
+    return (ambient + sky + diffuse + specular) * getAlbedo(data);
 }