Hello fellow VR enthusiasts. I have a question for the Vive and Rift owners. Does the IPD adjustment dial/slider on your HMDs change the perceived scale of the VR environment?
I came to this question when I recently watched a YouTuber Epyx911 compare the Vive and Rift. He said the Vive in Elite Dangerous didn't have as good 3D depth as the Rift. That made me remember the comparison where UKRifter said the Vive in Elite Dangerous seemed slightly smaller scale than the Rift. That triggered another thought...
I know with simpler HMDs that use a single screen. They split the screen and display a separate image for each eye. DK1, DK2, Gear VR, Google Cardboard ect. If you adjust those HMDs for IPD. That is, moving the lenses closer or farther apart from each other. Either though a built in adjuster or modding. Doing that ALSO has a dramatic effect on the perceived scale of the virtual world. I have done this many times and know it has that effect. What I don't know is if that applies to the Vive or CV1. These current gen headsets have 2 screens. I have also heard the screens move with the lenses when the user adjusts for IPD. I am now wondering if the moving screens cancel out the effect on the environment scaling. Thus leaving only the intended effect of IPD adjustment.
To speak on my own experience with Elite Dangerous. I run the game in SBS mode. I think that mode was intended for 3D TVs and Monitors. Anyway, I then use a Modded version of SweetFX to do the lens correction and some image alignment. I do this to make the game compatible with my DIY HMD. The game also offers 2 adjustment sliders for 3D modes. 3D Separation and 3D Focal Distance. I opened up the Settings.xml config file and found that. 3D Separation was actually adjusting IPD. Again just like before. Adjusting the IPD variable in game had a dramatic effect on the perceived environment scale. Oddly it says these modes "Does not apply to HMDs". I guess the game configures itself for retail headsets and they don't want users messing things up? Anyway, I have included some screen shots for you Vive and Rift owners if you want to fiddle around. I have no idea if editing the file will have any effect or not. Good Luck.
I look forward to your results on using the IPD adjustment dial/sliders on your HMDs. I also would like to know if the Settings.xml has any effect for you and if it helps Vive to get a better experience.
The Settings.xml can be found at:
C:\Users\UserName\AppData\Local\Frontier Developments\Elite Dangerous\Options\Graphics\Settings.xml