faster GUI in unity 4.0.0 behaves differently than in 3.x?

[maraoz]

Hi. I posted the following question on Unity3D Questions but I later found this forum which seems much more active, so here goes:

Is it possible that the faster GUI shipped with Unity 4.x behaves differently in some cases? I had a script that relied on the MakeWindow function to be called even in “-batchmode” mode, and when I upgraded to 4.0.0 the function is never called.

Where can I find all the changes to GUI so I can fix my code accordingly? Thanks, Manuel

[dkozar]

This is the only info I found; no detailed changelog available:

Rewrite of the GUI system

The existing GUI system (OnGUI) had its core rewritten, optimized and cleaned up. It uses less memory and induces less garbage collection cycles. In some cases we’ve seen it being 10x faster without GUILayout, and several times faster than previous version when GUILayout is used.

Note: this is not the “New GUI” that is coming to a later Unity 4.x release. It’s existing GUI, made much faster.

(taken from http://unity3d.com/unity/whats-new/unity-4.0)

As for the speed, I noticed the significant gain and also the GC working better. Here is the thread related to this topic.