Increased GC Alloc in PropertyDrawer with Repaint

Unity Engine
,
1

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.

[CustomPropertyDrawer(typeof(RepaintTest))]
public class RepaintTestDrawer : PropertyDrawer
{
  public override void OnGUI(Rect position, SerializedProperty property, GUIContent label)
  {
    EditorWindow.focusedWindow.Repaint();
  }
}

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.

2

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?