Will Stereoscopic 3D Cause A Major Performance Hit?

[Gordo-San]

Hi all!

This is something I have been curious about since first hearing that the game would be indeed, propper stereo 3D. Personally, I just don't see how it wouldn't cost some serious detail or frame reduction. I mean, twice the frames need to be rendered, am I right? Lets say, if the game runs at 30fps, wouldn't that require rendering @ 60fps, including both eyes, just to keep up with 30?

Will all of this lessen the experience for the vast majority of non-3D HDTV owners out there, or will the experience be different for both? (graphically enhanced for standard HDTVs)

Also, wouldn't the game require a specific frame-rate lock, just to be in sync with the L/R output?

Maybe I'm missing something, but any info would be appreciated.

[Shletten]

Hi Gordo-San,

This is something I also wonder about. It is very hard to imagine the solutions they may have come with to deliver some great stereoscopic 3D. Sorry, I cannot give you an answer as I am as clueless as you are. Maybe it's a FOV trick? For exemple, 45°+45°=90° which is the most popular FOV in video games. This way the game sure would render two different images but it's not as if it had to render two full images of 90° each. Does it even make sense? http://forums.ubi.com/groupee_common/emoticons/icon_wink.gif

[koshien]

I'm very curious about it too... there might be a performance hit, as you say, so that 3D gamers will play @30fps and 2D gamers (losers...lol...actually, since I'm in Europe, I have a 2D tv too...) @60 fps.
All I know is Ubisoft is using Sensio 3D standard, which has been recently approved as the official standard for real 3D Dvds.
We'll see!

[cravinmild]

well, if they release a demo i will let u all know what the loss will be lol. By the way the trailer looks i would think my rig will curl up and die but i have not had a problem with any game yet (vision3d-samsung 2233rz) short of crysis that has slowed me down that i could not play it at all-crysis just need to lower the settings

[Likay]

I played games in stereo-3d using stereodrivers (nvidiastereo, iz3d-stereo) since maybe ten years or more back in time.
In my experience the framerate drops from between 5-50% using the stereodriver. It's not a huge deal because s-3d gives more visual quality than many other effects than can be turned off. The nvidiastereodrivers often had problems rendering postprocess effects, hdr, bloom etc improperly and anyway had to be turned of for a proper experience. This of course made a gain in performance which often compensated for the loss in framerates using stereo. The loss of framerates depends on which things that bottlenecks the system. Therefore at rare cases you experience no performanceloss using stereo. Usually you get a performance of about 60-70% using stereo as is nowadays.

Avatardemo using an 8800gtx, c2de6600 and winxp works very fluent anc actually crysis in stereo loads the computer way worse.

[Chibi_Chaingun]

By forcing the nVidia drivers instead of enabling 3D in-game, I can run at near all ultra-high and high settings w/physics at medium, 1600x1200 no AA and achieve a very steady smooth framerate, 30+ in stereoscopic 3D.

8800gts 512
Intel Dual Core 2.51
4 gb RAM