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GLCOLORMASK(3G)			 OpenGL Manual		       GLCOLORMASK(3G)

NAME
       glColorMask - enable and disable writing of frame buffer color
       components

C SPECIFICATION
       void glColorMask(GLboolean red, GLboolean green, GLboolean blue,
			GLboolean alpha);

PARAMETERS
       red, green, blue, alpha
	   Specify whether red, green, blue, and alpha can or cannot be
	   written into the frame buffer. The initial values are all GL_TRUE,
	   indicating that the color components can be written.

DESCRIPTION
       glColorMask specifies whether the individual color components in the
       frame buffer can or cannot be written. If red is GL_FALSE, for example,
       no change is made to the red component of any pixel in any of the color
       buffers, regardless of the drawing operation attempted.

       Changes to individual bits of components cannot be controlled. Rather,
       changes are either enabled or disabled for entire color components.

ERRORS
       GL_INVALID_OPERATION is generated if glColorMask is executed between
       the execution of glBegin() and the corresponding execution of glEnd().

ASSOCIATED GETS
       glGet() with argument GL_COLOR_WRITEMASK

       glGet() with argument GL_RGBA_MODE

SEE ALSO
       glClear(), glColor(), glColorPointer(), glDepthMask(), glIndex(),
       glIndexPointer(), glIndexMask(), glStencilMask()

COPYRIGHT
       Copyright © 1991-2006 Silicon Graphics, Inc. This document is licensed
       under the SGI Free Software B License. For details, see
       http://oss.sgi.com/projects/FreeB/.

AUTHORS
       opengl.org

opengl.org			  03/16/2013		       GLCOLORMASK(3G)
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