   GL_SGIX_clipmap openGl extention
  GL_SGIX_clipmap openGl extention(used by Quaque to disply very large texture) is This extention is supported by nvidia 5200 card ? http://oss.sgi.com/projects/ogl-sample/registry/SGIX/clipmap.txtThanks   
Check for yourself;  thanks, i m using lnux system so it is not possible to use this tools!but when i use glxinfo and glewinfo , it gives me :Hi all!! SGIX_clipmap  : missed!!How i can install this extention ?Thanks !;  Unless there is a newer version of the drivers with it in then you can't I'm afraid   