https://github.com/slonopotamus/screenwidgetcomponent

A very performant replacement for screen-space Unreal Engine WidgetComponent.
https://github.com/slonopotamus/screenwidgetcomponent

umg unreal-engine

Last synced: 4 months ago
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A very performant replacement for screen-space Unreal Engine WidgetComponent.

• Host: GitHub
• URL: https://github.com/slonopotamus/screenwidgetcomponent
• Owner: slonopotamus
• License: mit
• Created: 2024-07-29T12:25:22.000Z (6 months ago)
• Default Branch: main
• Last Pushed: 2024-08-08T08:48:34.000Z (6 months ago)
• Last Synced: 2024-08-09T11:03:46.620Z (6 months ago)
• Topics: umg, unreal-engine
• Language: C++
• Homepage:
• Size: 28.3 KB
• Stars: 6
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.adoc
  • License: LICENSE

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README

        
= ScreenWidgetComponent

ScreenWidgetComponent is a very performant drop-in replacement for screen-space Unreal Engine WidgetComponent.

Supports Unreal Engine 4.27 and newer.

== What's wrong with WidgetComponent?

. It uses expensive `SConstraintCanvas` internally instead of a cheaper `SCanvas`

. It uses direct `float` Z-depth, resulting in unnecessary Z-order updates.

. It reorders its children in O(n^2^) time almost every frame, leading to long tick times and multi-millisecond CPU losses on **ChildOrder** Slate invalidation.

== Can optimizations this widget uses be applied to WidgetComponent?

Definitely yes, though Epics usually need several years to accept changes like this.