![]() ![]() The first ARB extension was GL_ARB_multitexture, introduced in version 1.2.1. It then becomes known as a standard extension, and the abbreviation ARB is used. It may further happen that the Architecture Review Board "blesses" the extension. In that case, the abbreviation EXT is used. It may happen that more than one vendor agrees to implement the same extended functionality. For example, NVIDIA's abbreviation (NV) is used in defining their proprietary function glCombinerParameterfvNV() and their constant GL_NORMAL_MAP_NV. Extensions may introduce new functions and new constants, and may relax or remove restrictions on existing OpenGL functions.Įach vendor has an alphabetic abbreviation that is used in naming their new functions and constants.
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