TXAA

 
 
 
Call of Duty: Black OPS 2

Assassin's Creed 3

The Secret World

TXAA Overview

TXAA (Temporal Antialiasing): Movie-Quality gaming made real


Film studios invest enormous resources in developing advanced technologies and post-production effects to deliver visually spectacular experiences for movie-goers. For games to achieve this level of fidelity, developers need new anti–aliasing technologies that deliver a viewing experience that eliminates the distraction of unrealistic, jagged lines (”jaggies”) and aliased shimmering–without compromising performance.

NVIDIA is making this happen today, bringing cinema-quality graphics to life in blockbuster gaming titles like Assassin’s Creed III and Call of Duty: Black Ops II with an innovative new temporal antialiasing technology called TXAA. Available exclusively on GeForce® GTX Kepler™-powered GPUs, TXAA is designed to be directly integrated into game engines . Plus, it combines the raw power of MSAA (multi–sample anti–aliasing) with a temporal filter and sophisticated resolve filters similar to those used in CG films. The end result is a smoother, more lifelike image than any other comparable technique.

With TXAA, today’s cinematic games play the way they should. Spectacularly.

TXAA Technology

NVIDIA® TXAA


TXAA is a new film-style antialiasing technique designed specifically to reduce temporal aliasing (crawling and flickering in motion). This technology is a mix of a temporal filter, hardware antialiasing, and custom CG film-style antialiasing resolve. 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 antialiasing algorithms. The higher-quality filtering used by TXAA results in softer images compared to the lower-quality filtering of traditional MSAA.

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 hit 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 antialiasing with the most efficient performance possible to make games such as Assassin’s Creed® III and Call of Duty®: Black Ops 2 look their absolute best.

Image shown without anti-aliasing, with 8x MSAA, and with TXAA.

TXAA 4x performs similarly to 4xMSAA, but produces higher quality results than 8xMSAA.

NOTE: TXAA is only supported on NVIDIA® Kepler™ GPUs and will require a GTX 600-series graphics card to enable the feature in the 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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