Licensee reported that alpha blending is done twice in the code below, and the fix below seems to fix it.


const FLinearColor ComputedColorAndOpacity(Context.WidgetStyle.GetColorAndOpacityTint() * GetColorAndOpacity() * SurfaceBrush.GetTint(Context.WidgetStyle));


FLinearColor ContextWidgetStyleColor = Context.WidgetStyle.GetColorAndOpacityTint();
ContextWidgetStyleColor.A = 1.0f;
const FLinearColor ComputedColorAndOpacity(ContextWidgetStyleColor * GetColorAndOpacity() * SurfaceBrush.GetTint(Context.WidgetStyle));

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Steps to Reproduce
  1. Open the attached project
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    This project contains the following setup:
    *Set RenderOpacity of CanvasPanel to 0.5.
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    *The materials used for RetainerBox are as follows.
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  2. Play. A RetainerBox that contains Alpha will be faded.
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ComponentUE - Editor - UI Systems - UMG
Affects Versions5.15.2
CreatedFeb 10, 2023
UpdatedDec 15, 2023
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