Contents

CustomMaterial

A material that works with custom Metal shader functions.

Declaration

struct CustomMaterial

Mentioned in

Overview

Custom, or programmable, materials allow you to leverage RealityKit’s existing shader pipeline to render physically based or unlit materials that support custom Metal shader functions. These functions modify how RealityKit renders an entity. Custom materials support two different types of custom Metal shader functions: geometry modifiers and surface shaders.

Use a _surface shader _to calculate or specify all the material attributes that RealityKit uses to render your entity, such as baseColor, normal, and roughness. A geometry modifier can offset the position of an entity’s vertices to change the size and shape of an entity. It can also change other per-vertex data, such as vertex color and UV texture coordinates, which define how RealityKit maps textures on to the model.

For more information on creating custom materials and writing shader functions, see Modifying RealityKit rendering using custom materials.

Topics

Creating custom materials

Setting the core properties

Controlling opacity

Setting shader properties

Modifying texture coordinates

Culling unnecessary polygons

Setting depth testing properties

Classes

Structures

Instance Properties

Type Aliases

Type Properties

Enumerations

See Also

Shaders