glColorMaskGLFALSE

glColorMaskGLFALSE is not a valid OpenGL function name. The correct OpenGL function for controlling color buffer writing is glColorMask. This function takes four boolean arguments corresponding to the red, green, blue, and alpha channels, respectively. To disable writing to all color channels, the function would be called as glColorMask(GL_FALSE, GL_FALSE, GL_FALSE, GL_FALSE).

When glColorMask is called with all arguments set to GL_FALSE, subsequent drawing operations will not modify the color buffer. This means that any pixels drawn, lines rendered, or polygons filled will not be visible on the screen. However, depth and stencil buffers, if enabled, will still be affected by drawing operations.

This functionality can be useful in several scenarios. For instance, it can be employed when performing calculations or rendering to off-screen buffers where only depth or stencil information is required. It can also be used to temporarily prevent visual updates during certain stages of rendering, such as when updating other render states or preparing for a subsequent draw call. The effect of glColorMask is persistent until it is called again with different arguments to re-enable color writing.