3D Vision Blog

A normal user's look into the world of 3D Stereo Technologies

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Some 3D Vision Monitors May Have Resolution Issue in 3D Mode

August 27th, 2013 · 11 Comments · GeForce 3D Vision

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Back in 2011 when Acer released their first Acer HN274H B 3D monitor with 3D Vision 2 and 3D Lightboost technology support and I’ve got a unit for testing I have noticed that the monitor had some problems with the resolution in stereoscopic 3D mode. When it was showing something in stereo 3D mode the image was like with only half of the vertical lines per eye and not all of them showing, very similar to what you are seeing in a passive 3D monitor though there in 3D mode you get half the horizontal lines per eye. After all one of the advantages of active 3D technology is that it is supposed to be offering full 1080p resolution per eye thanks to the shutters in the 3D glasses being used. Notice on the image above how on the 3D Vision setup wizard with the screen showing the hexagon and rectangle stereo 3D test screen how the 2D text above is just fine, however the geometric figures with stereo 3D effect applied to them are like with half horizontal resolution – you see a line of green pixels for the hexagon then a line of what seems to be white pixels then again a line of green and the same goes with the blue for the triangle. Normally these figures need to be a solid color and monitors with this vertical scanline-like or checkerboard-like issue are showing them as if they are with lower resolution then they should actually be. Note that the image above is not a very closeup shot of the screen and yet the effect caused by the issue is clearly visible, so it is easily noticeable at normal viewing distance when using the display.

Back then I’ve tried pretty much anything to see where the problem with the Acer HN274H B monitor not showing the full resolution per eye was, like using different video drivers, trying different GPU configurations, playing with different cables and so on, but nothing helped. So I ended up with the conclusion that there is something wrong with the monitor itself. Nvidia was also aware about the issue when I’ve checked with them and they were looking into what was causing the problem. I should note that when testing the Asus VG278H monitor that was the other 3D Lightboost-capable monitor back at that time there were no such problems as what the Acer monitor has shown in stereo 3D mode, so apparently not all monitors were affected by this. Since that time I’ve tested a few more newer 3D-capable monitor with 3D Lightboost technology and did not see the same problem present or that much apparent at least in any of them, however I just seen a forum post with people complaining of having very similar problem with most of the newer active 3D displays on the market though not all units seem to be affected. This includes monitors such as the Asus VG248QE, Asus VG278HE, Asus VG278HR, BenQ XL2420T and BenQ XL270T, so it seems that the problem is still there and the question is what is casing it? This issue has actually been identified as LCD inversion (alternating positive and negative voltages for pixels used within an LCD panel in order to prevent polarization and thus damage) and thanks to Mark Rejohn we already have a good online test to check your 3D monitor for LCD inversion artifacts, so check out the Moving Inversion Patterns Test.

With that said, if you have a 3D-capable monitor that is suffering from the same problem as described above (seeming like half horizontal resolution) when in stereo 3D mode and by the way this issue is also visible with moving objects when you are using the display in 120Hz 3D mode, though everything seems normal in 60Hz, you are welcome to report it in the comments below or the forum topic linked below. Please post the model of your 3D display as well as a production date (should be printed on the information sticker at the back of the display). You can easily check to see if your 3D monitor is affected by the same issue and how strong the problem is by going through the 3D Vision setup wizard and taking a closer look at the Hardware Test image with the geometric figures that is on the photo above, so you actually don’t need anything special to test, though the mentioned test above can also help if you are using a compatible browser.

To check out the topic describing the above resolution problem at the GeForce forums…

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Nvidia and Ubisoft Pushing Graphics in Games, No 3D Vision Support

August 21st, 2013 · 1 Comment · General 3D News

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Nvidia has just announced an what they call an alliance with Ubisoft to offer PC gamers “the best gaming experiences possible” for some of Ubisoft’s upcoming top titles to be released this fall, including Tom Clancy’s Splinter Cell Blacklist, Assassins Creed IV Black Flag and Watch Dogs. Here is a quote about what this alliance means for gamers expecting the best possible graphics:

NVIDIA’s developer technology team is working closely with Ubisoft’s development studios on incorporating graphics technology innovations to create game worlds that deliver new heights of realism and immersion. One example is NVIDIA TXAA antialiasing, which provides Hollywood-levels of smooth animation, soft shadows, HBAO+ (horizon-based ambient occlusion) and advanced DX11 tessellation.

Sadly this news does not mention 3D Vision at all or at least stereoscopic 3D support and this comes as a bit of a disappointment for gamers playing in stereoscopic 3D mode especially in regards to Assassins Creed IV that has the potential to look simply great when played in stereo 3D mode as previously released Assassins Creed games have demonstrated. Notice that Nvidia is talking about “new heights of realism and immersion” and that apparently no longer includes native stereo 3D support or 3D Vision support and that comes a general lack of activity from Nvidia regarding 3D Vision for a while now…

The good news here is that we already have DirectX 11 wrappers available that allow shader modification directly by the 3D Vision user community playing games in stereo 3D. Thanks to Helix and the 3DMigoto we could still be able to modify some problematic vertex and pixel shaders (or remove them) in order to have new DirectX 11 games run with all the visual goodies, including tessellation, so that these titles could actually be made playable in stereoscopic 3D mode with 3D Vision even if they don’t have official support.

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The Indigomod is Now Called 3DMigoto and is Freely Available

August 19th, 2013 · No Comments · GeForce 3D Vision

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Indigomod, the DirectX 11 Wrapper for fixing 3D Vision shader issues that was mentioned here on the blog last month is now available for free and with a new name, apparently the project is now called 3DMigoto (Japanese for splendid, magnificent, beautiful). The guys behind the project have released both a beta version of the 3DMigoto wrapper itself as well as the wrapper packaged as a patch for fixing the shaders of the game Bioshock Infinite. Unfortunately there is not a lot of information or documentation to help you get started with the wrapper if you are not familiar on how to use it to remove or rewrite problematic shaders for stereoscopic 3D rendering, so that a DirectX 11 game that does not work well with 3D Vision’s stereoscopic 3D rendering method by default can look properly. So you will have to kind of learn on the go, especially considering that the wrapper also has some interesting extra features available besides shader modification. Just as a reminder, Helix has also released a version of his wrapper for DX11 along with patched shaders for the game Bioshock Infinite that you can download and try.

For more information and to download the 3DMigoto DirectX 11 wrapper…
And a kind of support topic about the 3DMigoto at the official Nvidia forums…

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