For example, the extension GL_ARB_multitexture (which has been adapted into the core) contains the function glActiveTextureARB and the token GL_TEXTURE0_ARB. The name of the tokens and functions ends with the prefix of the extension. If an extension is supported on a specific computer, it means those tokens and/or functions can be used there. Quite a few of these extensions have been folded into the OpenGL core.Īn extension always contains at least one enum token, or one function. Many of these extensions are old and obsolete in modern programming practice they are listed for the sake of completeness. The extension registry has over 300 extensions listed. The registry also contains guidelines for creating new extensions and has example C/C++ header files containing function entry points and token enums. The OpenGL Extension Registry is maintained by the ARB and contains the technical specifications of all known OpenGL extensions.
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