Question URP Lit Shader in Shader Graph

Is there a way of starting with the URP LIT shader and extending it with Shader Graph? Or do I need to rebuild the entire LIT shader graph and add my extra features to it?

 

Found a version of the HDRP Lit Shader Graph if anyone finds that useful:
https://github.com/RemyUnity/SG-HDRP-Lit

It would be great if there was a standard example graph included in URP and HDRP for the main coded shaders.

 

I too am looking for a shader graph version of the URP Lit shader. I'm relatively new to shaders so wanted to start there as an example for learning. My own efforts are sadly lacking

 

Did any of you have success?

 

Old post, but since it's been bumped recently:

Unity actually wrote a blogpost that tells you how to do lighting in URP:
https://blog.unity.com/technology/custom-lighting-in-shader-graph-expanding-your-graphs-in-2019

The shader graph interface in their pictures is a little bit different from current Unity versions, since the post is from 2019, but it still works. However, make sure that your shader is set to either Unlit or SpriteUnlit, or else you'll get lighting twice.

If you also want your objects to cast shadows, make sure to instead set your shader to Lit, and to pipe your lit color into the Emission port of the output node so that you don't get lighting twice. I don't know if custom shadow receiving works in Unlit/SpriteUnlit shaders, but it definitely works with the Lit method. But only if your shader's surface is set to "Opaque" or you have "Transparent Receive Shadows" enabled in your Forward Renderer Data asset.

Also, I got some errors with the #ifdef KEYWORD directives in their code, but replacing them with #if defined(KEYWORD) directives solved that issue for me. Might be a problem with my Unity version, but that's how you fix that problem in case it does occur.

Lastly, the guide doesn't cover ambient light, emission or normal mapping. The first can be done yourself by using an Ambient Light node, the second is a simple add operation between your lit color and your emission color, and the third can be done with the graph below. You just use the output of that graph instead of the Normal Vector node used in the blogpost, and there you go you've got normal mapping.

I think that about covers it.

 

Performing necromancy on this thread to see if anyone's managed to find a solution to this.

 

Now needed node is seems to be working in last 2021 LTS

 

Your image is showing a node from a VFX graph. not the shader graph.

That said, I'd still like to know what people use as a good URP/Lit shader replacement as a starting point for adding additional features.

 

Anybody find a replacement for the URP/Lit in shadergraph?

 

2023 and developers still would want an answer instead of building everything from the ground up.

 

any news 3 years later? I am still searching the Unity URP StandardSurface shader as a base to build upon it in shader graph to change couple of features, like AO map with UV2 channel.

 

Cough Cough. Anything?

 

Same here...

 

I have also dealt with this problem, is my solution - https://assetstore.unity.com/packages/slug/249542

 

Does this expose the lighting model in the graph?

 

GAHHH.

(sorry, too many years of frustration came out there in one word.)
(what went wrong, unity?)