Problems encountered in post-processing with full-screen quads

This is a READ-ONLY snapshot of the Godot Community Forums when TwistedTwigleg was the owner, which is hosted for archival reasons only. The current Godot Community Forums can be found here.

Some links may point to external websites, including the current Godot Community Forums. These websites are not associated with TwistedTwigleg.

Problems encountered in post-processing with full-screen quads

ning_xue

I followed the tutorial to add a fullscreen quad, where the shader used texture(SCREEN_TEXTUE, SCREEN_UV), then I found that I couldn't see some objects whose shaders also used texture(SCREEN_TEXTUE, SCREEN_UV). How to fix it this problem?

cybereality

You can't really have more than one full screen shader. The best option is to combine all effects into one shader. You can also use viewports to composite shaders, but I found this to be really slow.

ning_xue

cybereality You can also use viewports to composite shaders

You mean, render the scene into the viewport first, then get the texture through the viewport's get_texture method, then paste this texture onto the sprite and render it with a shader?

cybereality

Yes, you can do it that way, using uniform samplers.