glColorMaskGLTRUE

glColorMaskGLTRUE is not a recognized OpenGL function or constant. The standard OpenGL function for controlling color buffer writability is glColorMask. This function takes four boolean arguments, corresponding to red, green, blue, and alpha channels, respectively. To enable writing to all color channels, the correct invocation would be glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE). The use of "GLTRUE" as a separate identifier is not part of the OpenGL API. It is possible that "glColorMaskGLTRUE" is a misunderstanding or a custom macro defined in a specific project, but it does not represent a standard OpenGL feature. When working with OpenGL, it is important to refer to the official documentation or reliable resources for correct function names and constant values. The glColorMask function is crucial for controlling which parts of a pixel's color can be modified during rendering operations, allowing for selective updates to the color buffer.