For glColorMaski, specifies the index of the draw buffer whose color mask to set.
Specifies whether red has to be written into the frame buffer. The initial values is GL_TRUE, indicating that the color components are written.
Specifies whether green has to be written into the frame buffer. The initial values is GL_TRUE, indicating that the color components are written.
Specifies whether blue has to be written into the frame buffer. The initial values is GL_TRUE, indicating that the color components are written.
Specifies whether alpha has to be written into the frame buffer. The initial values is GL_TRUE, indicating that the color components are written.
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glColorMaskispecify whether the individual color components in the frame buffer can or cannot be written.glColorMaskisets the mask for a specific draw buffer. 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.