unity_InstanceID undefined

[AG_in_person]

Hello.

I’m trying to get procedural instancing to work in shader graph. As far as I can tell, I followed this approach:

DrawMeshInstancedIndirect and Shader Graph

I’m evaluating LWRP/Shader Graph for a project that would rely heavily on DrawMeshInstancedIndirect. I’m unclear on how/if it would work with Shader Graph. Its not apparent how I’d access something like unity_InstanceID from a Shader Graph. I guess I don’t really know how you’d read from a StructuredBuffer inside a ShaderGraph either! I don’t see an option for it in the Blackboard section. Maybe doing instanced rendering that relies on a StructuredBuffer for each instances info would be more of…

URP Shader Graphs with instanced indirect - InstanceID node seems to give 0

However, the graph doesn’t compile because I use unity_InstanceID(as given in the referenced answers). It keeps being undefined. (undeclared identifier 'unity_InstanceID' at ...).

I know from the sources that this variable willbe defined ifa couple of conditions are met, having PROCEDURAL_INSTANCING_ON amongst others. It is even described here:

https://gist.github.com/Cyanilux/4046e7bf3725b8f64761bf6cf54a16eb

Nevertheless, I did’t succeed in getting it to work.
Can someone point me to more secret documentation, or otherwise help me out?
Thank you!

[AG_in_person]

Solution:
In “Graph Inspector”, I had to remove the leading underscore in field “Reference” from _PROCEDURAL_INSTANCING_ON (which was generated when adding the keyword) to the name of the keyword. Then, I inspected the generated code and saw that, for the very first time, I was on the right track regarding the preprocessor definitions. Subsequently, the compiler error mentioned in the original post was resolved.

EDITED: Moved new issue to new thread.