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

glGet() with argument GL_COLOR_WRITEMASK

voidglColorMask(GLbooleanred,GLbooleangreen,GLbooleanblue,GLbooleanalpha);voidglColorMaski(GLuintbuf,GLbooleanred,GLbooleangreen,GLbooleanblue,GLbooleanalpha);

       Copyright © 1991-2006 Silicon Graphics, Inc.
       Copyright © 2010-2014 Khronos Group

[FIXME: source]                                    11/18/2024                                    GLCOLORMASK(3G)

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.

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

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.

glClear(), glDepthMask(), glStencilMask()

       ┌──────────────┬───────────────────────────────────────────────────────────────────────┐
       │              │                OpenGLVersion                                         │
       ├──────────────┼─────┬─────┬─────┬─────┬─────┬─────┬─────┬─────┬─────┬─────┬─────┬─────┤
       │ Function     │ 2.0 │ 2.1 │ 3.0 │ 3.1 │ 3.2 │ 3.3 │ 4.0 │ 4.1 │ 4.2 │ 4.3 │ 4.4 │ 4.5 │
       │ /            │     │     │     │     │     │     │     │     │     │     │     │     │
       │ Feature      │     │     │     │     │     │     │     │     │     │     │     │     │
       │ Name         │     │     │     │     │     │     │     │     │     │     │     │     │
       ├──────────────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┤
       │ glColorMask  │  ✔  │  ✔  │  ✔  │  ✔  │  ✔  │  ✔  │  ✔  │  ✔  │  ✔  │  ✔  │  ✔  │  ✔  │
       ├──────────────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┼─────┤
       │ glColorMaski │  -  │  -  │  ✔  │  ✔  │  ✔  │  ✔  │  ✔  │  ✔  │  ✔  │  ✔  │  ✔  │  ✔  │
       └──────────────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┴─────┘