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Topic on User talk:Blackbird/AA Test

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It's not blurring at all. What you perceive as "Blurring" is actually averaging of High frequency information that is ACTUALLY aliasing.

All that high frequency pixel sharp information is interpreted as many as detail, but 9/10 times it's actually aliasing. Which is a fact and not subjective in the slightest. It's also one reason why many people are against using DVNR on movies filmed on film to remove grain. Because it gives a sense of texture and detail from the high frequency noise. But in that case it's not digital aliasing.

HOWEVER, there are incidental details being averaged out occasionally and conflicts (like the film grain, shown in the screenshots, AA is being applied to that as well. Which results in an unwanted effect of that being averaged out so it doesn't look as good in a still shot. In motion it's not an issue.) and also UI/Text elements This always happens with SGSSAA because it's applying AA to everything. Unless specified otherwise to ignore certain things, like the primary flip chain. Which will often times skip applying AA to the UI, for example here with FFXIV http://screenshotcomparison.com/comparison.php?id=97317. But it may also bring several other negative side effects. So it is a per game issue.

Some of this can be corrected via a simple negative LoD adjustment which will result in less averaging of high frequency information, but can also result in more aliasing. Some of it can be corrected via using downsampling in conjunction to increase sharpness. Some of it can be by disabling certain effects like the film grain or using a different driver function.


But also,believe me, simply slapping FXAA on top of the existing AA is not even going to come CLOSE , REMOTELY to the actual quality of this. In stills and in motion. SGSSAA is actually resolving detail and issues that otherwise cannot be performantly. Such as harsh specular aliasing which the second screenshot highlights. FXAA wouldn't do anything for that, which FEAR2 in particular has a LOT of due to it's shading model.


Ironically enough, FEAR2 scales many effects like Bloom/DoF with resolution. So with Downsampling, the same scene is actually blurrier http://i5.minus.com/ib2i4iJfzZPiIl.png (This is with 2x2 downsampling).