---
title: "init(useTintColor:useTexture:outputChannel:outputOpacity:)"
framework: realitykit
role: symbol
role_heading: Initializer
path: "realitykit/lowlevelmaterialresource/simplesurfacedescriptor/init(usetintcolor:usetexture:outputchannel:outputopacity:)"
---

# init(useTintColor:useTexture:outputChannel:outputOpacity:)

Creates a descriptor for the specified combination of inputs and outputs.

## Declaration

```swift
init(useTintColor: Bool, useTexture: Bool, outputChannel: LowLevelMaterialResource.SimpleSurfaceDescriptor.OutputChannel, outputOpacity: Bool)
```

## Parameters

- `useTintColor`: If true, the shader reads a tint color from the argument table and multiplies it with the surface output.
- `useTexture`: If true, the shader samples a texture from the argument table and multiplies it with the surface output.
- `outputChannel`: The surface output channel the shader writes to.
- `outputOpacity`: If true, the shader also writes the computed alpha to the surface opacity output.