To use Spine animations in Unity HDRP for UI elements, you can follow a similar approach as with URP, but with some considerations. While there isn't a specific HDRP package for Spine, you can use the SkeletonGraphic component for UI elements, which is designed to work with Unity's UI system. This component should work with HDRP as it primarily deals with UI rendering. However, you may need to create or modify shaders to ensure compatibility with HDRP, especially if you want to use advanced features like HDR or custom lighting effects.
For exporting your Spine assets, use the straight alpha workflow to ensure compatibility with non-Spine shaders. You might need to adjust your shaders to handle features like PMA (Premultiplied Alpha) if you use them. While there isn't a dedicated HDRP guide, the principles of shader modification and UI integration remain similar to those in URP. You can refer to the Spine-Unity documentation for more details on shader customization.
