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Question Increased GC Alloc in PropertyDrawer with Repaint

Discussion in '2023.1 Beta' started by Kazko, Feb 27, 2023.

  1. Kazko

    Kazko

    Joined:
    Apr 2, 2014
    Posts:
    82
    Hi, when calling Repaint in PropertyDrawer (to achieve responsive Inspector), the GC Alloc raises from 277 B to about 20 kB in Unity versions 2020 - 2022.2. That's normal and happens even with a drawer with no layout.

    Code (CSharp):
    1. [CustomPropertyDrawer(typeof(RepaintTest))]
    2. public class RepaintTestDrawer : PropertyDrawer
    3. {
    4.   public override void OnGUI(Rect position, SerializedProperty property, GUIContent label)
    5.   {
    6.     EditorWindow.focusedWindow.Repaint();
    7.   }
    8. }
    However since 2023.1 Beta this overhead jumps 3x to 60 kB.

    Is this due to transition to UITK or could it be a bug? Thanks for any ideas.
     
    Kazko, Feb 27, 2023
    #1

  2. karl_jones

    karl_jones

    Unity Technologies

    Joined:
    May 5, 2015
    Posts:
    7,899
    Hi,
    It could be due to the UI toolkit transition although it would be nice to not regress performance with this change. Could you please file a bug report so we we can look unity it?
     
    karl_jones, Feb 27, 2023
    #2