Scene Color Node in 2D renderer (URP) in ShaderGraph doesn't work--any workaround?

[DrydenMeints]

From what I’ve found so far, the Scene Color Node is incompatible with the 2D renderer. (It would be neat if this could be changed in a new version!)

In the meantime, does anyone know of any workarounds to get the camera texture? I’m hoping to create distortion effects.

Thanks for any leads!

[Lo-renzo]

The Scene Color Node does not work because it uses the _CameraOpaqueTexture. Since the 2D Renderer does not generate an opaque texture - and transparent sprites do not write to that texture - it’s not going to work.

You probably want to use the _CameraSortingLayerTexture. You can find a demo of it here:

@Lo-renzo

https://github.com/Unity-Technologies/2d-renderer-samples/tree/21.2

Look for the Heat Haze Overlay scene. It essentially lets you take a snapshot of the current state of the transparent scene at a particular point. However, it’s fairly limited.

Dev discusses setup here: https://forum.unity.com/threads/uni…owcase-2021-not-working.1086896/#post-7017055 (note this post is a little old so the github is probably more accurate if something seems off). See also: https://github.com/gamedevserj/Shader-Graph-Experiments/issues/1

In Shader Graph declare a new Texture2D property, make sure its reference is _CameraSortingLayerTexture, and UNCHECK Exposed. This tells ShaderGraph to get the global texture by that name.

Set up your 2D Renderer Data asset to generate the _CameraSortingLayerTexture.

The sprite that makes use of that Shader Graph must be set to render AFTER the _CameraSortingLayerTexture is created (set it to a later Sorting Layer) or else you’ll get the last frame’s colors which will look very odd.

[DrydenMeints]

@Lo-renzo

The Scene Color Node does not work because it uses the _CameraOpaqueTexture. Since the 2D Renderer does not generate an opaque texture - and transparent sprites do not write to that texture - it’s not going to work.

You probably want to use the _CameraSortingLayerTexture. You can find a demo of it here:

In Shader Graph declare a new Texture2D property, make sure its reference is _CameraSortingLayerTexture, and UNCHECK Exposed. This tells ShaderGraph to get the global texture by that name.

Set up your 2D Renderer Data asset to generate the _CameraSortingLayerTexture.

The sprite that makes use of that Shader Graph must be set to render AFTER the _CameraSortingLayerTexture is created (set it to a later Sorting Layer) or else you’ll get the last frame’s colors which will look very odd.

Amazing, this is exactly what I was looking for. Thanks so much.

[SuperDanOsbourne]

Awesome! I was looking for this too! Now I just need to figure out how to scale and offset so the sprite I apply my shader graph to lines up and scales to the background.

[mrinuccini]

@Lo-renzo

The Scene Color Node does not work because it uses the _CameraOpaqueTexture. Since the 2D Renderer does not generate an opaque texture - and transparent sprites do not write to that texture - it’s not going to work.

You probably want to use the _CameraSortingLayerTexture. You can find a demo of it here:

In Shader Graph declare a new Texture2D property, make sure its reference is _CameraSortingLayerTexture, and UNCHECK Exposed. This tells ShaderGraph to get the global texture by that name.

Set up your 2D Renderer Data asset to generate the _CameraSortingLayerTexture.

The sprite that makes use of that Shader Graph must be set to render AFTER the _CameraSortingLayerTexture is created (set it to a later Sorting Layer) or else you’ll get the last frame’s colors which will look very odd.

Dude, Thank you so much I have been looking for this for like a week. This is exactly what I wanted !