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# docs.GL

OpenGL 4
OpenGL 3

# glClampColor

## Name

glClampColor — specify whether data read via glReadPixels should be clamped

## C Specification

`void glClampColor(` | GLenum target,
| GLenum clamp`)`;

## Parameters

`target`

  Target for color clamping. `target` must be `GL_CLAMP_READ_COLOR`.

`clamp`

  Specifies whether to apply color clamping. `clamp` must be `GL_TRUE` or `GL_FALSE`.

## Description

`glClampColor` controls color clamping that is performed during glReadPixels. `target` must be `GL_CLAMP_READ_COLOR`. If `clamp` is `GL_TRUE`, read color clamping is enabled; if `clamp` is `GL_FALSE`, read color clamping is disabled. If `clamp` is `GL_FIXED_ONLY`, read color clamping is enabled only if the selected read buffer has fixed point components and disabled otherwise.

## Errors

`GL_INVALID_ENUM` is generated if `target` is not `GL_CLAMP_READ_COLOR`.

`GL_INVALID_ENUM` is generated if `clamp` is not `GL_TRUE` or `GL_FALSE`.

## Associated Gets

glGet with argument `GL_CLAMP_READ_COLOR`.

## Version Support

| OpenGL Version
--- | ---
Function / Feature Name | 2.0 | 2.1 | 3.0 | 3.1 | 3.2 | 3.3 | 4.0 | 4.1 | 4.2 | 4.3 | 4.4 | 4.5
`glClampColor` | - | - | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔

## See Also

## Copyright

Copyright © 2010-2014 Khronos Group. This material may be distributed subject to the terms and conditions set forth in the Open Publication License, v 1.0, 8 June 1999. https://opencontent.org/openpub/.

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