CustomMaterial.Program

class · iOS 18.0+ · SDK 27.1

final class Program

An object that represents the backing shader compilation required for custom materials. You can use this type to control when RealityKit compiles shaders, and to initialize `CustomMaterial` objects with more predicitable loading performance. When initializing a `CustomMaterial` this way, a `Program` object is created first asynchronously, which is used to cache the material's shader program so the `CustomMaterial` can be loaded immediately later. For example: ```swift // Initialize descriptor with desired properties var descriptor = CustomMaterial.Descriptor() descriptor.lightingModel = .unlit // Create program object let program = await CustomMaterial.Program(surfaceShader: surfaceShader, descriptor: descriptor) // Create material (returns immediately) let material = CustomMaterial(program: program) ```

Members (4)

get descriptor(): CustomMaterial_Program_Descriptor

final let descriptor: CustomMaterial.Program.Descriptor

static init(surfaceShader: CustomMaterial_SurfaceShader, geometryModifier: (CustomMaterial_GeometryModifier) | null, descriptor: CustomMaterial_Program_Descriptor): Promise<CustomMaterial_Program>

init(surfaceShader: CustomMaterial.SurfaceShader, geometryModifier: CustomMaterial.GeometryModifier? = nil, descriptor: CustomMaterial.Program.Descriptor) async throws

get surfaceShader(): CustomMaterial_SurfaceShader

final let surfaceShader: CustomMaterial.SurfaceShader

get geometryModifier(): (CustomMaterial_GeometryModifier) | null

final let geometryModifier: CustomMaterial.GeometryModifier?

All RealityFoundation types →