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TXAA
阅读量:3610 次
发布时间:2019-05-21

本文共 2052 字,大约阅读时间需要 6 分钟。

Technology

TXAA is a new film–style anti–aliasing technique designed specifically to reduce temporal aliasing (crawling and flickering seen in motion when playing games). This technology is a mix of a temporal filter, hardware anti–aliasing, and custom CG film–style anti–aliasing resolves. To filter any given pixel on the screen, TXAA uses a contribution of samples, both inside and outside of the pixel, in conjunction with samples from prior frames, to offer the highest quality filtering possible. TXAA has improved spatial filtering over standard 2xMSAA and 4xMSAA. For example, on fences or foliage and in motion, TXAA starts to approach and sometimes exceeds the quality of other high–end professional anti–aliasing algorithms.

width="640" height="360" src="http://www.youtube.com/embed/-6YUVwGQvzM?wmode=transparent" frameborder="0" allowfullscreen="" style="z-index: 1;">

 

TXAA combines the raw power of MSAA with sophisticated resolve filters similar to those employed in CG films to produce a smoother image far in advance of any comparable technique. Depending on the type of shading implemented in a given game, the performance impact of TXAA can be slightly different. In contrast to methods like FXAA that attempt to maximize performance at the expense of quality, TXAA attempts to maximize quality at the expense of performance. TXAA is a superior option for those looking for the highest–quality anti–aliasing with the most efficient performance possible to make games such as Assassin's Creed IV Black Flag and Batman Arkham Origins look their absolute best.

width="640" height="360" src="http://www.youtube.com/embed/MyE84ydeYRY?wmode=transparent" frameborder="0" allowfullscreen="" style="z-index: 1;">

 

NOTE: TXAA is only supported on NVIDIA® Kepler™ GPUs and will require a GTX 600–series graphics card, or higher, to enable the feature in the game's graphics options. If you do not have the requirements to enable TXAA, the option will be hidden. TXAA is not properly observed with static screen shots, only with scenes in motion.

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