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FSAA vs Non-FSAA Shots
We've received a lot of requests for full-scene anti-aliasing screenshots, so we figured we'd use the Quake 3 NV15 level as a demonstration. All screenshots were taken in "Normal" mode at 640x480.
FSAA Disabled
FSAA Enabled
FSAA Disabled
FSAA Enabled
FSAA Disabled
FSAA Enabled
To be honest, the screenshots really don't do full scene anti-aliasing justice. In some shots, you can hardly see the difference, but once you're inside the game the difference is quite obvious. 640x480 looks marvelous with FSAA!
FSAA Disabled
FSAA Enabled
FSAA Disabled
FSAA Enabled
FSAA Disabled
FSAA Enabled
I ran a few informal tests with the NV15 level and FSAA enabled on my personal system. Basic specs are a Pentium III 500E at 500MHz with no overclocking on the CPU or GeForce 2 GTS. Quake 3 Normal at 640x480 framerates were 28.4 fps without FSAA, 26.5 fps with FSAA.
Keep in mind that the 500MHz CPU is obviously the bottleneck, with a faster CPU we'd get a better idea of the performance hit FSAA brings.