World Scale in VR won't apply in-game.

[Harry Kuvert]

the OpenVR app ingame has 2 options: World scale (IPD) and supersampling. Neither will apply when I hit save and restart the game. I tried reinstalling the game several times and nothing helps.

[Mr Crisp]

Why do you need to adjust the world-scale of AC in VR? Everything is created using realworld measurements and therefore should be scaled accurately.

Things that can lead to an incorrect world scale are IPD lens adjustment too far outside your actual IPD or how high or low your seated in the car- too high whilst you are sitting in a low seat will skew the size- you can reset view in cockpit using CTRIL+SPACE to align your physical wheel with the in-game wheel.

Check your floor level matches your physical floor level in your playspace- this can also have an affect on how world-scale is percieved in VR.

[Harry Kuvert]

@mr crips as much as I appreciate your answer, I dont agree that the scale is proper, even if I am seated correctly. In Project Cars 2 and DCS world I can change the scale, and in the past I have been able to use these sliders in the openVR app in AC. I recently changed GPU to a 2080 TI and after that the sliders wont work. I also reinstalled windows which might have caused a change.

TL;DR the scale might be correct and it might not, but I still want the ability to change it to my preference. I just want to know why the sliders wont apply the changes, even after restarting the game.

[Mr Crisp]

İlk olarak Harry Kuvert tarafından gönderildi:

@mr crips as much as I appreciate your answer, I dont agree that the scale is proper, even if I am seated correctly. In Project Cars 2 and DCS world I can change the scale, and in the past I have been able to use these sliders in the openVR app in AC. I recently changed GPU to a 2080 TI and after that the sliders wont work. I also reinstalled windows which might have caused a change.

TL;DR the scale might be correct and it might not, but I still want the ability to change it to my preference. I just want to know why the sliders wont apply the changes, even after restarting the game.

Pcars world scale was added presumably because their models aren't scaled to real world measurements or their VR implementation doesn't honour your Vives IPD as their sterao cameras do not move- therefore in VR you do indeed have to change the scale but this is a `bodge` because if you create a game using real world measurements, 1 metre in game should look like 1 metre in VR- there is nothing else that is correct.

If however the world scale appears incorrect in a game that has no world-scale option, either the games measurements when building the models and assets is incorrect or your expectations of sizes is skewed or the camera seperation in a VR games isn't honouring the physical IPD adjustment of the game, ie you can move the lenses of your Vive but the in-game cameras do not seperate or move- this will throw out the world-scale.

It could be a SteamVR issue because I am using Rift and run AC in Oculus Native mode and the scale is perfect- I have never seen a single complaint about world-scale using a Rift.

I'm not saying your world scale is't incorrect but if it appears incorrect to you, something is wrong, wither SteamVR isn't making IPD adjustments in game, your floor level in SteamVR is incorrect, your seat in-game is too close, too far, too high or too low- or you have another issue whic is causing scale in game to look incorrect.

AC has no world-scale adjustment because when you build a game using real world measurements this will translate to real world measurements in VR- so you don't add a scale option because its all correct as long as your VR HMD IPD ajdustment is correct and in game and floor level and in-game seating etc.

Adding a world-scale option to a VR game is done as a `bodge` in an attempt to get a closer to real world scale for users, presumambly because the games assets were tweaked and sized to run on a flat screen monitor and therefore look either too large or too small whilst in VR.

[Harry Kuvert]

The VR ipd knob on the HMD doesnt change the ingame cameras distance from eachother. It just changes the physical screens separation which in turn changes the image clarity. The ingame camera separation changes how big the surrounding environment feels thus the scale of the world. I can recall being able to change this previously in AC as well as the supersampling in the same APP. Now however neither option gets saved nor changes settings directly when using either slider. Therefore i think something had caused a bug to my or everyones game recently.

[Harry Kuvert]

Also i thank you for your patience and taking your time to answer me.

[Mr Crisp]

İlk olarak Harry Kuvert tarafından gönderildi:

The VR ipd knob on the HMD doesnt change the ingame cameras distance from eachother. It just changes the physical screens separation which in turn changes the image clarity. The ingame camera separation changes how big the surrounding environment feels thus the scale of the world. I can recall being able to change this previously in AC as well as the supersampling in the same APP. Now however neither option gets saved nor changes settings directly when using either slider. Therefore i think something had caused a bug to my or everyones game recently.

The stereo cameras in game should not have a fixed seperation- they should absolutely honour the physical spacing you set on your VR HMD.

The lense spacing on your Vive is not only there for your eyes to be roughtly centred at each lens- they also have to change the seperation between the in-game stereo cameras.

Why? Well what do you think would happen if your in-game stereo cameras were either more seperated or less seperated than your physical IPD of your eyes and where you adjusted the Vives lenses? Answer is world scale will be off- this is an objective fact and this is why I think SMS added stereo cameras in PCars for VR and gave them a static seperation distance of 64mm, the average for the population and that the stereo cameras do not seperate and move the same distance as the physical lense seperation as adjusted by the users of the VR HMD. So because world scale would be off for users that do not have a 64mm IPD, they added a world-scale slider.

I have an IPD of 60mm and I do have to use the Pcars world scale slider to get what feels about right, about 8% and this number is no coincidence becuse thats roughly the difference between 64mm and 60mm- leading me to suspect they used a fixed stereo camera seperation distance- not really the correct way to implement VR.

In short, yes all stereo VR cameras do move in game and should move in game according to the users actual adjusted IPD or the world scale could appear off to the user.

In-game stereo cameras seperation may not be applied `live` whilst you are adjusting it- it might only be sent to the game once upon starting up in VR- so you might not see any adjustment when you move the sliders on screen.

[Mr Crisp]

Check if when you adjust your lens spacing on your Vive, that it is changing the IPD value in SteamVR- I can't recall where the option is to adjust the lens spacing in SteamVR but go there and put on your Vive and double check that when you move the lenses that on screen in VR you see the IPD number change.

There have been cases where for whatever reason, the lens adjustment isn't being sent to the PC.

[Harry Kuvert]

I did some testing with the function "Headset mirror" changing the IPD with the knob, and to my surprise the cameras ingame did change! I guess the change it so subtle when doing it with your headset on. You were right I was wrong!

Still my concernt about the app "OpenVR" in AC remains. The main thing that makes me believe something is wrong, is that the first slider "Supersampling" 0.80 to 2.50 will not SAVE when I restart the game. This makes me frustrated, that also the IPD setting in the same app might not be working as the above setting just resets to 2.50, whatever setting i choose.

[Mr Crisp]

Sounds like SteamVR has an issue sending the supersampling to the game.

Does SteamVR have the option to set the .exe you apply the supersampling to- because when you load AC, the menu system is not the game .exe, its just a launcher- the main game is acs.exe and that is what loads into VR- you need to get SteamVR to apply supersampling to that program.

[Harry Kuvert]

İlk olarak Mr Crisp tarafından gönderildi:

Check if when you adjust your lens spacing on your Vive, that it is changing the IPD value in SteamVR- I can't recall where the option is to adjust the lens spacing in SteamVR but go there and put on your Vive and double check that when you move the lenses that on screen in VR you see the IPD number change.

There have been cases where for whatever reason, the lens adjustment isn't being sent to the PC.

It is in fact sent to the PC! check this test I did:

https://imgur.com/a/WATzWTN
u can easily see the camera distance change if u download both images and press left and right arrow to quickly switch image

[Harry Kuvert]

https://steamuserimages-a.akamaihd.net/ugc/960851554624580828/4137E01D21ECB77A5B070CC21641C7FF77A41725/

I tried setting SteamVR SS settings to the lowest possible, looks horrid! :D

Check the screenshot, the supersampling still sits stuck at 2.40 (was wrong about the max being 2.50 earlier). This makes me wonder if there is some kind of windows issue where it wont allow the setting to save to the .ini file correctly.

[Mr Crisp]

Where are you adjusting the supersampling? In SteamVR under `Application Resolution Adjustment`? Because as far as I can tell it gives you a drop-down for Assetto Corsa, however- it as I said earlier might be taking the launcher .exe as trying to apply the resolution settings rather than the acs.exe game program that is what SS needs to be applied to for it to work in VR.

Edit: Under Video in SteamVR settings there is a maunal override box to tick, are you using that to force SteamVR to use a higher resolution as default for all VR apps?

[Harry Kuvert]

İlk olarak Mr Crisp tarafından gönderildi:

Where are you adjusting the supersampling? In SteamVR under `Application Resolution Adjustment`? Because as far as I can tell it gives you a drop-down for Assetto Corsa, however- it as I said earlier might be taking the launcher .exe as trying to apply the resolution settings rather than the acs.exe game program that is what SS needs to be applied to for it to work in VR.

Edit: Under Video in SteamVR settings there is a maunal override box to tick, are you using that to force SteamVR to use a higher resolution as default for all VR apps?

In my test I clicked manual and set that to the lowest and also manual override to the lowest for AC. So the supersampling is actually sub-1.0 and still ingame the app displays 2.40. It wont change how much I try to drag it down and save. So im thinking the app is having issues saving to the ini-file.

[Mr Crisp]

Anti Virus software maybe blocking the change.

Alternative idea is to use OpenVR Advanced Settings Overlay found here https://github.com/matzman666/OpenVR-AdvancedSettings and that has options for supersampling and saving to a profile- might fix your issue, otherwise I am all out of ideas.

[Harry Kuvert]

İlk olarak Mr Crisp tarafından gönderildi:

Anti Virus software maybe blocking the change.

Alternative idea is to use OpenVR Advanced Settings Overlay found here https://github.com/matzman666/OpenVR-AdvancedSettings and that has options for supersampling and saving to a profile- might fix your issue, otherwise I am all out of ideas.

I dont have antivirus, just windows defender. The supersampling is not a problem cause I set that in steamVR, its just the "IPD-setting" in the openVR app I want to adjust. Was bringing up the supersampling only cause its in the same app in AC and its not saving either.