1# OpenGL XML API Registry 2 3This directory contains the OpenGL, GLX, and WGL XML API registries, in 4gl.xml, glx.xml, and wgl.xml respectively. They are used to reserve 5enumerant ranges for vendors working on new extensions, to register 6extension interfaces when an extension is published, and to generate the 7Khronos-supplied header files in ../api . 8 9The canonical versions are always found in the master branch of the github 10repository at https://github.com/KhronosGroup/OpenGL-Registry 11 12The 'validate' Makefile target uses the 'jing' tool to confirm that each XML 13file is structurally valid and conforms to the registry schema in 14registry.rnc. The schema is described in detail in readme.pdf. 15 16The 'default' Makefile target generates updated headers in ../api/ from the 17XML files. 18 19Note that while there are targets for ../api/{gl.h,glx.h,wgl.h} in 20genglvnd.py and genheaders.py, these targets are not generated by default 21and are experimental. At present, you should use the versions of these 22headers shipped with your OS or IHV SDK. 23