OpenGL Programming Guide: The Official Guide to Learning OpenGL, Versions 3.0 and 3.1, Seventh Edition

Appendix B. State Variables

This appendix lists the queryable OpenGL state variables, their default values, and the commands for obtaining the values of these variables, and contains the following major sections:

• “The Query Commands”

• “OpenGL State Variables”

The Query Commands

In addition to the basic commands to obtain the values of simple state variables (commands such as glGetIntegerv() and glIsEnabled(), which are described in “Basic State Management” in Chapter 2), there are other specialized commands to return more complex state variables. The prototypes for these specialized commands are listed here. Some of these routines, such as glGetError() and glGetString(), have been discussed in more detail elsewhere in ...