Julian Eisel
2b394e1108
The UI was always drawing all buttons in a layout, no matter if they were scrolled out of view (as in, outside of the visible part of the region) or not. This means it's doing quite some work that can be avoided. UI drawing generally isn't a big bottleneck in Blender, so I don't expect huge speedups from this. But while playing back animation, we do redraw a fair bit of the UI, so in cases where there are many buttons out of view, it may bring a little FPS boost. E.g. say in complex node trees (the node editor is redrawn on animation playback in case there are animated values that need updated UI feedback). This also mitigates the issue in T92922 significantly. Differential Revision: https://developer.blender.org/T92922 Reviewed by: Brecht Van Lommel