---
title: GLKTextureEnvMode.modulate
framework: GLKit
role: symbol
role_heading: Case
platforms: [iOS 5.0+, iPadOS 5.0+, macOS 10.8+, tvOS 9.0+]
path: glkit/glktextureenvmode/modulate
---

# GLKTextureEnvMode.modulate

The output color is calculated by multiplying the texture’s color by the input color.

## Declaration

```swift
case modulate
```

## See Also

### Constants

- [GLKTextureEnvMode.replace](glkit/glktextureenvmode/replace.md)
- [GLKTextureEnvMode.decal](glkit/glktextureenvmode/decal.md)