SMAA a possibility?

DavidGX · October 23, 2013

Is there any possibility of support for SMAA for anti aliasing? (Google SMAA for info or SMAA Injector to try it yourself in a game.)

SXX · October 23, 2013

DavidGX said: ↑

Is there any possibility of support for SMAA for anti aliasing?
Click to expand...

Yes. According to bgolus:

bgolus said: ↑

Basic SMAA 1x, which is Crytek's optimization of MLAA, and SMAA T2x, which is a temporal AA method (aka uses data from the previously rendered frame) should both be implementable if I can convince Steve to work on it again.
Click to expand...

https://forums.uberent.com/threads/beta-build-55430-55493.52938/page-4#post-807624

DavidGX · October 23, 2013

Excellent, thanks. I guess it was covered on here, but I searched for "SMAA" and found nothing. Also, clicking that links says I don't have permission to view it, which probably explains my lack of search results.

SXX · October 24, 2013

DavidGX said: ↑

Also, clicking that links says I don't have permission to view it, which probably explains my lack of search results.
Click to expand...

It's posted in Beta forums, so if you don't have game you won't able to access it.

I don't think there anything secret from backers, it's just forum structure long from perfect.
This is full quote:

bgolus said: ↑

Aye, it is FXAA, as it is labelled in the UI, though technically FXAA is a form of FSAA. FXAA forced on in your NVidia drivers differs from the in game implementation as it will apply FXAA to the entire view including the UI which often leads to blurred read text. The in game option applies it only to the game view prior to overlaying UI.

The resolution scaling allows for both increased resolution and decreased resolution over the current window resolution. The simple explanation of what it does is sets the resolution of the render targets to something other than the window resolution, the final image is put on a polygon that gets rendered at the full window resolution. If the rendered scene is a lower resolution it gets upsampled with bilinear filtering just like a texture on the wall of any other game. If the scene is rendered at a higher resolution you get the original form of FSAA, OGSSAA (Ordered Grid Super Sampling Anti-Aliasing).

The interaction between FXAA and resolution scaling is an interesting one as FXAA was originally written to handle the specific task of taking a lower resolution image and making it look better at full screen resolution, so if FXAA is turned on it helps smooth out the lower resolution.

I wrote a post a while back about the differences between SSAA, MSAA, and FXAA for those interested (or perhaps masochistic), though it simplifies some of the details of what MSAA and CSAA actually do.
https://forums.uberent.com/threads/fxaa-ssaa-instead-of-aa.34382/#post-510290
edit: One follow up to anyone who reads that link; since writing that post we dove head long in to a deferred shading renderer, which doesn't allow for techniques like MSAA to work properly, nor likely SGSSAA mentioned by others there. OGSSAA, FXAA are possible, hence them being implemented. Basic SMAA 1x, which is Crytek's optimization of MLAA, and SMAA T2x, which is a temporal AA method (aka uses data from the previously rendered frame) should both be implementable if I can convince Steve to work on it again.
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SMAA a possibility?

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