Unreal Engine 5 Character Creation, Animation, and Cinematics by Henk Venter & Wilhelm Ogterop

Author:Henk Venter & Wilhelm Ogterop
Language: eng
Format: epub
Publisher: Packt
Published: 2022-11-15T00:00:00+00:00

Things to keep in mind when using Lumen

You need to keep the following in mind while using Lumen:

Lumen's software ray tracing currently only works on static meshes, instanced static meshes, hierarchical instanced static meshes, and landscape terrain. If you want to use Lumen with skeletal meshes, you will need to have Hardware Ray Tracing enabled.

Avoid an Albedo value of pure white or pure black. This is because Lumen uses GI to calculate how much light will bounce off a material. In the real world, there are no pure white or pure black materials, so it will cause unrealistic results if your materials are using an Albedo value of pure white or black.

Transparent materials are ignored in Lumen while masked materials are treated as opaque.

Emissive materials on surfaces contribute to the GI calculation. Keep the size of the emissive surfaces large and relatively dim. Small and very bright emissive surfaces are problematic.

The maximum range of the Lumen's GI solution is up to 200 meters away from the camera.

Lumen works much faster with Nanite-enabled meshes. Change all your static meshes so that they use the Nanite system.

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