Best practice for post screen effects (including UI CanvasLayer)

Schorsch

Hey,

in my current setup, i have my normal scene. For my post screen effect i use a Node2D with BackBufferCopy as child. Copy mode is disabled. The BackBufferCopy has a TextureRect as child. This texture-rect has a 1x1px texture, extended over the whole screen in tiled mode. This TextureRect has my pixel-shader. Here, i transform my pixels output colors. While this works, this doesn't seem the right way for me. I got this setup on youtube but it seems weard. My biggest problem is that all UI-stuff is rendered on top of this, so my post-screen shader doesn't effect the HUD. I am new to Godot. Normally i would render into a texture and rerender this texture with the post-screen shader. Would that be the normal way for Godot too? How would the setup look like?

Greetings,

Schorsch

I could solve my problem by making the Backbuffercopy a child of my UI-Canvas. But it still would be good to know what is best practice to make post screen shader effects.