(Tested) Fast Approximate Anti-Aliasing (FXAA) Demo (GLSL)





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4 – FXAA performance tests

The scene of the demo is quite light so we can easily see the impact of the FXAA. I managed to find a Radeon HD 2400 PRO just to see how FXAA works with this kind of card.

Testbed:
- CPU: Core i7 960 @ 3.2GHz
- RAM: 4GB DDR3 Corsair Dominator
- Motherboard: GIGABYTE X58-A UD5
- Windows 7 64-bit
- Graphics drivers: R270.51, Cat 11.2
- PSU: Corsair AX1200

ASUS HD 2400 – 1280×720 windowed
- FXAA disabled: 113FPS – 8.8 ms / frame
- FXAA enabled: 64FPS – 15.0 ms / frame
–> 15.0 – 8.8 = 6.2 ms for a 720p frame.

ASUS HD 2400 – 1920×1080 fullscreen
- FXAA disabled: 96FPS – 10.0 ms / frame
- FXAA enabled: 38FPS – 26.0 ms / frame
–> 26.0 – 10.8 = 16.0 ms for a 1080p frame.

AMD HD 5870 – 1280×720 windowed
- FXAA disabled: 2700FPS – 0.37 ms / frame
- FXAA enabled: 2080FPS – 0.48 ms / frame
–> 0.48 – 0.37 = 0.11 ms for a 720p frame.

AMD HD 5870 – 1920×1080 fullscreen
- FXAA disabled: 1780FPS –> 0.56 ms / frame
- FXAA enabled: 1220FPS –> 0.82 ms / frame
–> 0.82 – 0.56 = 0.26 ms for a 1080p frame.

SAPPHIRE HD 6970 – 1280×720 windowed
- FXAA disabled: 3120FPS –> 0.32 ms / frame
- FXAA enabled: 2320FPS –> 0.43 ms / frame
–> 0.43 – 0.32 = 0.11 ms for a 720p frame.

SAPPHIRE HD 6970 – 1920×1080 fullscreen
- FXAA disabled: 1780FPS –> 0.56 ms / frame
- FXAA enabled: 1320FPS –> 0.75 ms / frame
–> 0.75 – 0.56 = 0.19 ms for a 1080p frame.

EVGA GTX 480 – 1280×720 windowed
- FXAA disabled: 2980FPS –> 0.33 ms / frame
- FXAA enabled: 2200FPS –> 0.45 ms / frame
–> 0.45 – 0.33 = 0.12 ms for a 720p frame.

EVGA GTX 480 – 1920×1080 fullscreen
- FXAA disabled: 2420FPS –> 0.41 ms / frame
- FXAA enabled: 1170FPS –> 0.85 ms / frame
–> 0.85 – 0.41 = 0.44 ms for a 1080p frame.

EVGA GTX 580 SC – 1280×720 windowed
- FXAA disabled: 2980FPS –> 0.33 ms / frame
- FXAA enabled: 2450FPS –> 0.40 ms / frame
–> 0.40 – 0.33 = 0.07 ms for a 720p frame.

EVGA GTX 580 SC – 1920×1080 fullscreen
- FXAA disabled: 2680FPS –> 0.37 ms / frame
- FXAA enabled: 1360FPS –> 0.73 ms / frame
–> 0.73 – 0.37 = 0.36 ms for a 1080p frame.



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