glColorMask
- enable and disable writing of color buffer components
void glColorMask(GLboolean red, GLboolean green, GLboolean blue, GLboolean alpha)
red
, green
, blue
, alpha
Specify whether red, green, blue, and alpha can or cannot be written into the color buffer. The initial values are all GL_TRUE
, indicating that all color components can be written.
glColorMask
specifies whether the individual components in the color 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 the color buffer, regardless of the drawing operation attempted, including glClear
.
Changes to individual bits of components cannot be controlled. Rather, changes are either enabled or disabled for entire color components.
Copyright © 2003-2004 Silicon Graphics, Inc.
This document is licensed under the SGI Free Software B License. For details, see http://oss.sgi.com/projects/FreeB/.
glClear
, glColor
, glColorPointer
, glDepthMask
, glStencilMask