Feature Request World Space canvas - when?

I'm working on the UI and off course I need world space canvas so the UI follows 3D objects
It doesn't work in URP 8.31
Which version or when does it work?

 

I'm using URP 10.2.2 at the moment with 2020.2.1f1 which works for me. I'm pretty sure it worked before that as well. What problems are you experiencing?

 

In a setup with multiple world canvas and multiple overlay cameras the UI displays on only one camera.

 

like so
topmost object is in one camera and the two below have their own overlay cameras

 

In the default URP scene, I added one more camera, set it to overlay and added it to the base camera stack. I disabled post processing in the overlay camera, so it doesn't do that twice on the whole image. I also set the overlay cameras culling mask to "UI" only.

I then added a world space canvas with a button, so there's something to see (on the UI layer). The button renders in both cameras. I attached my scene at a unitypackage. Just create an empty URP scene and import this. I used 2020.2.1f to create this but maybe it also imports on older versions.

I noticed you're using multiple cameras, one for each canvas. This is usually not necessary. If they're world space canvases, they're rendered just like any other object. The "event camera" is only necessary, when the canvases have interactive elements that you can click.

I can not see the setup of the respective cameras in your screenshots. Maybe there's something wrong with the culling layers? When you click one of the overlay cameras, you can see a small preview of it in the scene view. For the overlay cameras, only be the canvases without the rest of the scene should be visible. I can imagine you're overwriting the render output of one camera by rendering the whole scene again on top with an overlay camera.

 

Your setup has 1 world space UI overlay camera and my setup has 2, each with different culling layer, coordinates and FOV

I f̶i̶g̶u̶r̶e̶d̶ ̶i̶t̶ ̶o̶u̶t̶ stumbled on the solution: the world canvas was on the other camer's culling layer. it needs to be on the culling layer of the camera you want to render on. Makes sense. Didn't know that.