// Returns GL_TRUE if the OpenGL Extension whose name is *extName
// is supported by the system, or GL_FALSE otherwise.
//
// The *extName string must follow the OpenGL extensions naming scheme
// (ie: "GL_type_extension", like GL_EXT_convolution)
// Returns GL_TRUE if the OpenGL Extension whose name is *extName
// is supported by the system, or GL_FALSE otherwise.
//
// The *extName string must follow the OpenGL extensions naming scheme
// (ie: "GL_type_extension", like GL_EXT_convolution)