CSM receiver culling issue on Mobile

There are two issues on mobile of CSM receiver culling causing shadow receiver to be cull unexpectedly.

There is a video showing this issue in the following UDN thread.

https://udn.unrealengine.com/questions/496262/shadow-disappear-after-rotate-view.html

 

First one is the ReceiverMatrix's FarDistance too short to reach the receiver mesh. The code is at below

 

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The Second one is the Shadow ReceiverFrustum and CasterFrustm are coming from the largest split CSM ProjectedShadowInfo.  If there are 2 or 3 cascade shadow, the mesh in the small split CSM ProjectedShadowInfo may be culled by the largest split CSM ProjectedShadowInfo.

 

 

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