How to do Camera stacking in LWRP

So, I just realized after switching to LWRP that camera stacking doesn't work. Think like shooting a 3D model with one camera and composite it over a GUI shot with another camera, doesn't work anymore. It's official that it's not available for the moment. Any ideas on how to overcome this? Maybe use a custom render pipeline to do the second pass?

 

Render whatever you need into render texture and and just put it on gui image? Camera stacking is a really bad practice.

 

How do you mean put in non gui image?

 

Sorry, just miss keys on keyboard...
i mean "put it no gui image"

 

Yeah, that's a fair solution, I've been using it for quite a while in my inventory. Still I thought that stacking would be prefered: in the render texture solution it seems that you add another difficulty since not only it has to check the camera, but it has to also write the texture (I think). And also I have sometimes the feeling that the render texture looks a bit weird if you don't crank the resolution a lot.

 

AFAIK in SRP there is no way to render anything after uGUI

 

I just found that you can add a render feature to your pipeline render asset that render UI or any certain layer after post processing (or render opaque or anywhere you need), which solved my issue so that I don't need camera stacking anymore to solve UI issue.

 

I ended using the render texture, and bumping the res, thanks Battle Angel.

you mean, like this?:

 

Yes, Namely: (exclude UI layer from default layer mask)

 

Yeah, that makes sense and is more related to what I was thinking of. For the case of 3D objects I guess you should be able to make a layer "renderInFrontOfGUI" and put a rule to render it after the gui was drawn. The thing I'm not so sure about this, is if it is going to render everything and then render the 3D object on top of that or if it will actually leave the hole (wich is of corse better). I have to play a bit more with this, it looks very interesting.

 

Any updates on this?

 

I see it is out on URP which is great. You guys are awesome!

Any plans for this system to come out for HDRP??

 

this does not work for LWRP, right?

 

what about world space UI objects that should be rendered on top of everything else, but retain their world space scaling, such as health bars?

 

Are you on legacy LWRP?

You could use a separate RenderPass with a custom material that only renders UI instead of the objects.