scenekitaugmented-realityarkitshadowlag
Reduce Application Lag while using shadows in SceneKit
I am working on a 3D map in SceneKit. When I enable the Cast Shadow Property of a directional light in SceneKit, the shadows appear, but the application becomes very slow.
How do I reduce the lag while still maintaining shadows in the scene?
Solution
Use Fake Shadows (shadows generated as a texture in 3D authoring or 2D authoring app) rather than True Shadow Map. To apply fake shadows as a texture for 3D plane use PNG file format with premultiplied alpha channel (RGB * A). It considerably reduces Processing and Memory Usage when using shadows in RealityKit or SceneKit.
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