Kinematica: Using Kinematica with Scriptable Render Pipeline (URP or HDRP)

While experimenting with Kinematica in a project that uses the URP, I noticed that the snapshot debugger wouldn't correctly render its debug visualizations when active:



Note how in the above image I have the snapshot debugger enabled and am examining a specific frame, but the captured debug info isn't displaying.

After some debugging I was able to determine that this was because snapshot debugger is relying on the

Camera.onPostRender

event in order to render the debug overlay, and that event isn't broadcast when using the scriptable render pipeline.

Fortunately for us

onPostRender

is just a public delegate, and we can invoke it explicitly for ourselves! As an example, here's the setup I'm using the forward the

RenderManager.endCameraRendering

to

onPostRender

which gets the debug overlay working again:

Code (CSharp):

1. [RuntimeInitializeOnLoadMethod]
2. public static void RegisterCameraCallback()
3. {
4.     // Register a callback that forwards the `endCameraRendering` event to the legacy
5.     // `onPostRender` event used by the Kinematica frame debugger.
6.     RenderPipelineManager.endCameraRendering += (context, camera) =>
7.     {
8.         Camera.onPostRender.Invoke(camera);
9.     };
10. }

Hopefully once Kinematica development resumes direct compatibility for SRP will be added, but until then I hope this helps someone out!