inline void* osg::getGLExtensionFuncPtr

(const char* funcName,
  const char* fallbackFuncName)

return the address of the specified OpenGL function, if not found then check a second function name, if this fails then return NULL as function is not supported by OpenGL library.

Documentation

return the address of the specified OpenGL function, if not found then check a second function name, if this fails then return NULL as function is not supported by OpenGL library. This is usual for checking something like glActiveTexture (which is in OGL1.3) or glActiveTextureARB.

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