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Core in version 4.6
Core since version 3.0

glClampColor: specify whether data read via glReadPixels should be clamped

Function Definition

 void glClampColor(GLenum target​, GLenum clamp​);
Target for color clamping. target​ must be GL_CLAMP_READ_COLOR.
Specifies whether to apply color clamping. clamp​ must be GL_TRUE or GL_FALSE.


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.


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.

See Also



Copyright © 2010 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.