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Question by colindoemer · Jul 07, 2018 at 12:35 PM · uishaderrenderingshadow

How do I create a soft Drop Shadow or Glow in 2D UI?

I am currently working on a puzzle project, where different puzzle pieces have to be displayed in a Canvas. For visual quality and improved contrast, I need some kind of shadow around the border of the puzzle tile Sprite. alt text

Since I'm working with UI elements, every object is rendered in order of hierarchy. Because of that, I can not add the Shadow to the Puzzle pieces themself, cause it would mean that the shadow of one piece might be rendered over the surrounding pieces.

In theory, I would need to render a black version of each tile onto a seperate Layer/Texture/Canvas, blur the image, as soon as the drawing of all the tiles is done and then display it on Screen between Fore- and Background of my UI.

Does anyone know how to accomplish this?

picsart-07-07-022215.png (464.9 kB)
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