What is the best way to use a directional light?

The best way to use a directional light in RealityKit involves understanding its properties and how it interacts with other elements in your scene. Here are some key points:

Illumination: A directional light illuminates all objects in a scene uniformly, simulating a distant light source like the sun. This is useful for creating consistent lighting across your entire scene.
Customization: You can customize the color and intensity of the directional light. This allows you to match the lighting to the mood and style of your scene.
Shadows: Directional lights can cast shadows, which can add depth and realism to your scene. However, rendering shadows can be computationally expensive, so it's important to check your app's performance frequently.
Implementation: You can add and configure directional lights either through Swift API in code or using Reality Composer Pro, which provides a UI for tuning lighting behavior.

For a practical example of how to add and configure lights in RealityKit, you can refer to the session Discover RealityKit APIs for iOS, macOS and visionOS.

Relevant Sessions

These sessions provide detailed insights into lighting techniques and how to optimize them for different environments and platforms.