The game Portal 2 has been out for a few days already and I’ve decided to try it out in stereoscopic 3D mode with 3D Vision to see how good it will look with the added sense of volume. Portal 2 uses Valve’s Source engine, so expectations were high considering that the engine does perform quite well in stereo 3D mode. I’ve used the latest 3D Vision drivers version 270.61 WHQL that do come with an official profile for the game and in it Portal 2 is rated as providing Good experience in stereo 3D mode, but it is actually better than that, although not completely issue free yet.
Generally the game looks great in stereo 3D with the default settings and the 3D Vision profile, even the crosshair is rendered in 3D, the only thing that may be a bit of bother is the fact that the traditional game colors are very contrasting and with higher depth levels you may see more crosstalk/ghosting (just as was the case with the first Portal game). Another interesting thing that I’ve noticed was the fact that with SLI enabled when panning the portal gun movement is stuttering a bit in stereo 3D mode, creating a weird feeling, disabling SLI fixes the issue. There might be some other small issue during the game, but in general there are no serious issue to prevent you from enjoying the game in stereoscopic 3D mode with 3D Vision.
Nvidia is already aware of the issues in stereo 3D mode and they are working on fixing them, with the fixes expected to be available in the next 3D Vision driver update, here is what they noted as possible problems:
– Minor artifacts on water throughout the game.
– At the beginning of Chapter 8 (The Itch), the main NPC uses Video screens to watch and talk with you. In one eye the image is incorrect; half of the NPC is solid black like a bad shadow or texture.
– Using NVIDIA SLI with all in-game quality settings set to max, there is some image corruption. For example, objects will only render in one eye, polygons may appear stretched and shadows may be bad. You can work around this by configuring the antialiasing to any setting below 16x and setting anisotropic below 16x.
The 3D Vision profile provides a decent default convergence setting, however I did a testing to make it slightly better, so you can just tweak a bit the convergence with Ctrl + F6 in order for your Portal gun’s closest part not to seem doubled when not looking through the shutter glasses. You can see the above screenshot as an illustration of what I mean, click on it to see the full side by side screenshot and save it on your PC as a JPS file to view it in 3D. And yo are welcome to share your feedback about the game in the comments below…