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(app-e) APPENDIX E: OPENGL ENVIRONMENT VARIABLE SETTINGS
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FULL SCENE ANTI-ALIASING
 
Anti-aliasing is a technique used to smooth the edges of objects in a
scene to reduce the jagged "stairstep" effect that sometimes appears.
Full scene anti-aliasing is supported on GeForce or newer hardware.
By setting the appropriate environment variable, you can enable full
scene anti-aliasing in any OpenGL application on these GPUs.
 
Several anti-aliasing methods are available and you can select between
them by setting the __GL_FSAA_MODE environment variable appropriately.
Note that increasing the number of samples taken during FSAA rendering
may decrease performance.
 
The following tables describe the possible values for __GL_FSAA_MODE
and their effect on various NVIDIA GPUs.
 
__GL_FSAA_MODE  GeForce, GeForce2, Quadro, and Quadro2 Pro
-----------------------------------------------------------------------
  0             FSAA disabled
  1             FSAA disabled
  2             FSAA disabled
  3             1.5 x 1.5 Supersampling
  4             2 x 2 Supersampling
  5             FSAA disabled
 
 
__GL_FSAA_MODE  GeForce4 MX, Quadro4 500/550 XGL, and
                Quadro4 200/400 NVS
-----------------------------------------------------------------------
  0             FSAA disabled
  1             2x Bilinear Multisampling
  2             2x Quincunx Multisampling
  3             FSAA disabled
  4             2 x 2 Supersampling
  5             FSAA disabled
 
__GL_FSAA_MODE  GeForce3, Quadro DCC, GeForce4 Ti, Quadro4 700 XGL,
                Quadro4 750 XGL, and Quadro4 900 XGL
-----------------------------------------------------------------------
  0             FSAA disabled
  1             2x Bilinear Multisampling
  2             2x Quincunx Multisampling
  3             FSAA disabled
  4             4x Bilinear Multisampling
  5             4x Gaussian Multisampling
 
Please note that to use FSAA on Quadro-family products, you must disable
UBB (please see APPENDIX M: PAGE FLIPPING, WINDOW FLIPPING, AND UBB
for details).