osx man page for glcolormask

GLCOLORMASK(3G) 														   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  exam-
       ple, 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

																   GLCOLORMASK(3G)