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