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

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

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

       void glColorMaski(GLuint buf, GLboolean red, GLboolean green,
			 GLboolean blue, GLboolean alpha);

PARAMETERS
       buf
	   For glColorMaski, specifies the index of the draw buffer whose
	   color mask to set.

       red, green, blue, alpha
	   Specify whether red, green, blue, and alpha are to be written into
	   the frame buffer. The initial values are all GL_TRUE, indicating
	   that the color components are written.

DESCRIPTION
       glColorMask and glColorMaski specify whether the individual color
       components in the frame buffer can or cannot be written.	 glColorMaski
       sets the mask for a specific draw buffer, whereas glColorMask sets the
       mask for all draw buffers. 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.

ASSOCIATED GETS
       glGet() with argument GL_COLOR_WRITEMASK

SEE ALSO
       glClear(), glDepthMask(), glStencilMask()

COPYRIGHT
       Copyright © 1991-2006 Silicon Graphics, Inc. Copyright © 2010-2011
       Khronos Group. 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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