LowLevelMaterialResource.Descriptor The geometry modifier, surface shader, and lighting function for a material. Declarationstruct Descriptor TopicsCreating a descriptorinit(geometry:surface:lighting:)Configuring the shaderssurfacegeometryInstance Propertieslighting RelationshipsConforms ToSendableSendableMetatype See AlsoDescribing the materialLowLevelMaterialResource.SimpleSurfaceDescriptor