In your render pipeline asset, make sure you have rendering of depth map enabled.
Upgrade materials.
Create ForwardRendererData.
Uncomment #define LWRP
in SplitScreenManager.cs and SpltiScreenRendererPass . Make sure editor recompiles code.
Open your custom ForwardRendererData and assign SplitScreenRendererPass to Renderer Features list.
Next up, find SplitScreenCamera3D in your project and set Camera RendererType to Custom and assign your new RendererData. Also make sure you assign RendererData to SplitScreenManager component.
Should be done.
Will this work with 2d?