MicroSplat - URP for Unity 6

Unity's Scriptable Render Pipeline (SRP) requires a full rewrite of all shaders for each version of each SRP. We ship adapters for MicroSplat once a year, aligned with LTS versions of Unity. This module adds support for targeting the Universal Render Pipeline in Unity 6.0, and works for all MicroSplat modules. 6.3 adapter is here