From OpenGL Reference
Jump to navigation Jump to search

Specify whether data read via glReadPixels should be clamped.

C Specification[edit]

void glClampColor( GLenum target, GLenum clamp );


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 .


 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[edit]

 glGet with argument GL_CLAMP_READ_COLOR .

Version Support[edit]

 glClampColor  3.0+

See Also[edit]


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.