Error in shader on unity 6.1 (and also 6.0)

[gilad01]

If i use the "URP12 v2.0.0" (or above) shader package, i get this error for some of the shaders:
Shader error in 'Reallusion/Amplify/RL_HairShader_Variants_URP': Keyword '_MAIN_LIGHT_SHADOWS_CASCADE' is duplicated in several directives. This can lead to unnecessary shader variants. Please remove it from all but one directive..
if im using the old cc unity tools, its work, and also if i use uro_10 its also work.

[pistudios]

same problem after updated to Unity 6.1, please help!

[djuniah]

Can confirm this is still an issue with 2.0.2 and Unity 6.2

[djuniah]

Ok, i got it building after manually editing some of the shaders. It seems like they're using Amplify shader editor to create them and it's doing something really strange with the definitions.

Go to this folder: Assets\Reallusion\CCiC Unity Tools\URP\Shaders\Amplify
Drag all of the .shader files into your editor of choice, and look for the blocks that have all of the "#pragma multi_compile" lines. There are quite a few that are duplicated. Typically you'll see a first line like this:
#pragma multi_compile _ _MAIN_LIGHT_SHADOWS _MAIN_LIGHT_SHADOWS_CASCADE _MAIN_LIGHT_SHADOWS_SCREEN

and then some of those items will be duplicated a few lines below. Also, it seems like they're defining something with the name "_" which is a little strange.

After going through each shader and manually removing the duplicates, it does compile now. I haven't fully tested the functionality of it though.