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What is Anti-Aliasing, what is it and how does it work?




Sometimes, fine tuning game graphics settings can be a bit frustrating if you don't know what each of them does, so next we'll explain which of the oldest and most available PC Games, Anti Aliasing.

What is Anti-Aliasing and for what purpose?

To explain what Anti-Aliasing is, we must first define what it is to defeat, right? As you well know, photos are displayed to monitors in pixels, which is nothing like small squares.

Therefore, when a straight line appears in an image, it is much easier to represent it pixels because they are straightforward but what happens when you try to draw a double or dense line? Those little cakes are tied next to each other, forming something known as Aliasing, "steps" or "Sawtooth«.

Anti-Aliasing in circles

Anti-Aliasing is nothing more than a toothpick that filters these teeth so that fixed or straight lines appear more nutritious, eliminating or at least reducing this step effect.

An example of Anti-Aliasing by lines

You can see the obvious effect in the picture above. On the left we have a diagonal line where Aliasing is clearly visible without zooming in on the image, and on the right we see an Anti-Aliasing filter applied, which tends to soften the image in such a way that it gives the impression that the line is moving. When we zoom in, as shown again, you can see that it is simply deleted by defacing nearby pixels.

Anti-Aliasing in Games

Apparently to make this parliament have a positive impact on the perceived quality of the games. However, there is one thing to keep in mind: using this filter that reduces the edges of the saw. it has some effect on performance

and it can (and will certainly reduce FPS in the game, especially if you have a low graphics card).

What kinds of Anti-Aliasing are there and what do they do individually?

As we've mentioned before, in many games that have this foundation in their click settings, we will be able to choose different levels. In fact everyone does the same thing, but some do it in one process and some in another and at a different level, so the visual effects and the effect on the performance of the game are different. So, let's take a look at the most common types of Anti-Aliasing you'll find:

  • SSAA (Super Sample Anti Aliasing): The SSAA is the most effective way to fight Aliasing, and it was the first to be discovered. However, it is no longer widely used because it has a significant effect on performance, because what it does is force the GPU to render games at a higher resolution than the one shown and then lowered.
  • MSAA (Multi Sampling Anti Aliasing): MSAA is one of the most common methods, but it has the potential to be easy to use for polygons, although return has little effect on performance. His approach to combat fragmentation is done by creating multiple account structures, taking samples and combining both. There are different levels of fitness, so you can see that there are options like 2xMSAA, 4xMSAA and 8xMSAA.
  • CSAA (Anti Aliasing Reform) and EQAA (High Quality Anti Aliasing): CSAA was developed by NVIDIA, while EQAA is equivalent to AMD models. They both work similar to the MSAA but are optimized for their graphs, so they have little impact on performance.
  • FXAA (closest to Anti Aliasing): This mode is considered to be a trifle, because it is less visible with its effect and less impact on performance, making it a mode recommended for low-end PCs or those that are "good" for games. It doesn't do its job poorly when it comes to cutting edge edges, but it's flawed, which sometimes makes images look a little shorter.
  • TXAA (Interim Fighting Division: TXAA uses GPU resources less than FXAA, but combines different strategies from the previous ones to achieve smooth edges and more Aliasing reduction. However, it is also imperfect and sometimes causes the images to be somewhat blurred.

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Should you use it in games? What mode of selection?

To get the best clip quality and therefore the best gaming experience, the answer to the first of these questions is yes, you should use it whenever your Hardware allows you to maintain a good FPS rating. Now what is the selection mode? We will tell you that the highest mode allowed by your Hardware, also saves the game's FPS.

For low-power computers, the best option would be FXAA because they have the least impact on performance and will remove some uneven edges in some way, even though you remember that it creates a consistent effect. On the other hand we have SSAA which is a very effective method, but you can agree to run it if you have a PC left in the game in question.

Therefore, the ratio depending on the performance / performance of almost all cases will be available in MSAA mode, which can also "adjust" depending on its strength and its different modes (2X, 4X, 8X). Obviously, if the game allows you should try CSAA / EQAA depending on whether your graphics are NVIDIA or AMD respectively, because they are the MSAA-configured option.


Gamer, passionate about video games, technologies, gadgets and everything related to the world of electronics.

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