Question How to access the camera Depth Texture on URP

Hi!
I was trying to make some camera effects based using the camera depth texture using the shadergraph.
(simply as an initial experiment, render the depth texture converted to a gradient instead of b/w).
However, how can I retrieve the depth texture from the camera and use it in the shadergraph?
I saw there is the Scene depth node but i'm not sure this is what I am looking for.

Secondly: how can I "apply" the shader to the rendered camera? I tried attach a script to the camera and use the "OnRender" function, but it does not seem to be overriding the default camera. What am I missing?

Thanks!

 

Hi, I think Scene Depth Node is the thing you are looking for.

Do you mean a custom post-processing effect? I remember that in 2022.2b/2023.1a URP, you are able to create custom post-processing effects with zero code.

If you cannot use 2022.2b/2023.1a by now, you'll have to create custom post-processing effects with custom Renderer Features.

If it's not something that the coming custom post-processing can do (such as you need to modify Scene Depth), you can follow this URP Renderer Features docs to perform a full screen blit (using your own shader and set render target to depth, not the color blit shader) in URP.

 

Thanks a lot for your reply! That's exactly what I meant. I though it could've been scene depth node, but for some reason (even trying to render the scene depth node on a simple material, as a test) when i try to use it I end up with a black "texture" only which made me guess I was doing something wrong.

Thanks a lot for the link and the directions! I'll dig into it! Really appreciate!!