Newbie with Vorpx, some technical questions

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  • #220712
    Benedict81
    Participant

    Hi!

    Just bought Vorpx and I’ve only played with it for two evenings. Got some questions that I didn’t find answers for.

    Vorpx works and I’ve played Metro Last Light Redux with it for abit. Setting the game resolution is problematic, granted that this game has problems of its own with setting the resolution in windowed mode but heres what happens :

    – If I just start the game with Vorpx running and use the automated settings, it wants to use a very low resolution (1600×1200 or something like that). I can change the resolution in-game, but that garbles the graphics (this is because of the windowed mode, not because of Vorpx, the graphics go weird even in flat mode if the game is not fullscreen). So not a Vorpx problem, it is the game not liking windowed mode.

    – If I run the game through Vorpx Desktop Viewer, the resolution goes up, but now I can’t choose the resolution at all (the game locks the resolution to something weird like 5124×1440 (is that an ultrawide reso or something?), can’t remember the exact resolution but it was about that). Ok, the game is playable with this resolution, but I am still wondering why I can’t change the resolution in desktop viewer situation. I tried to turn the automatic resolution thing off, but that didn’t seem to do anything. I have created a plethora of custom resolutions into Nvidia control panel and if I understand correctly, it is recommended to run games in 4:3 aspect ratio or close to that for best results. And ofcourse I feel like I’d want to up the resolution a bit (getting near constant 120fps according to the Vorpx FPS thingy with this reso) cause the graphics still look a bit pixelated in the distance. Yes, I am new with Vorpx and I might be doing something wrong here, but thats why I am here :)

    -Another tech question not related to resolution – is the ALT+L thing something that should be done once you are in-game and in full vr? I ask this because if i tap ALT+L once in-game, it reduces mouselook to just horizontal movement and if I don’t tap ALT+L I have full mouselook in both axis. Using the ALT+L also seems to remove the Y-axis options completely from the Vorpx menu (delete key), again, if I don’t tap the ALT+L, the menus have all the Y-axis options (and I do want full mouselook, especially in first person games).

    Im running Win 11 (all the latest updates), RTX 4080, Pimax Crystal HMD.

    Thanks!

    #220716
    Ralf
    Keymaster

    ALT+L (DirectVR scan):

    The DirectVR scanner does easy 1:1 head tracking and/or FOV adjustment. The screen that gets displayed during the scan shows what exactly is supported in a particular game.

    How often the scan has to be done depends on the game. Ranges from only when a game gets updated in case the memory addresses are fixed and thus can be cached between game starts, over once per game launch (the most commmon case) to once per level/savegame load.

    Resolution (copy/paste reply from the post below yours, but should largely answer your question):

    For fully featured DirectVR profiles vorpX has game specific code that lets you set the resolution in the vorpX menu in various steps. If that’s the case vorpX displays an according hint in the top/left corner of the game window and in the headset.

    If not, you can always adjust the resolution in the game options yourself, just like you would do when playing on your monitor.

    Also make sure to read the ‘Custom Resolutions’ section in the vorpX help. It explains how to add resolutions to your PC that your monoitor can’t display. Alternativly you can use the new virtual monitor in vorpX 24.1.0, which comes with all important resolutions predefined and thus saves you the somewhat tedious process of setting up custom resolutions.

    #220720
    Benedict81
    Participant

    Hi!

    Yeah, I think I solved the resolution thingy, theres a checkbox in the virtual monitor settings that allows higher resolutions, now I can change to 3200×2400 for example (so my bad ).

    The ALT+L is weird still, I tried it again when playing last night and all it seemed to do was that I lost head tracking when I tried it. Maybe just not use it at all.

    Now all I need to do is figure out a resolution bit higher than 3200×2400 that I can add to Nvidia cotrol panel without it freaking out and Im good to go :) Are 1:1 resolutions a no-go? I’ve read an old comment from you about not using 1:1 resolutions (maybe they screw up the rendering or something), is this still the case or should I maybe try one of those (like 2880×2880 for example)?

    #220724
    Ralf
    Keymaster

    If you use 24.1.0 with the virtual monitor, you don’t need to add resolutions in the nVidia control panel. The virtual monitor is the more comfortable alternative to adding custom resolutions for your actual monitor.

    Per default the virtual display should kick in when you launch the vorpX desktop viewer and put on your headset. Additional resolutions up to 8K can be added in the config app, including (almost) 1×1 with vorpX automatically taking care of adding a few extra pixels horizontically to ensure any 3D heuristics relying on detecting quad textures don’t get confused.

    IMPORTANT: SUPER HIGH RESOLUTIONS ABOVE 4K NEED LOTS OF MEMORY. vorpX creates several extra buffers at full screen res. May even bring your 16GB 4080 to its knees combined with games that have high GPU memory requirements even without vorpX. So don’t overdo it.

    #220725
    Benedict81
    Participant

    Thanks again!

    Read your message and remembered that there was that little box in the virtual monitor settings to add custom resolutions, again my bad to think that I need to add these custom resolutions to Nvidia directly. I’ll have to tinker with the virtual monitor settings tonight and try it out.

    #220731
    Boblekobold
    Participant

    Virtual Monitor is really useful. With Quest 3 and Reverb G2, it also helps you to get 4:3 resolution.

    Most useful resolutions are already predefined (I just had to add a 4:3 3200p resolution).

    On Reverb G2, Metro Exodus works with 2880p, 3200p and even 3840p (5120×3840) resolution (at least in Z3D) with an RTX4090 ! With ultra raytracing and no DLSS (with Cloud Profile Ennchanted Edition and renamed excecutable). Even official G3D allow very high resolutions (especially if you turn off G3D shadow in VorpX). You can play fullscreen and adjust ratio in game video settings in this particular game.

    Metro Last Light Redux (in G3D) is less optimized and 2880×2160 is already high resolution on RTX4090.

    Metro 2033 original can reach easily 2880p in DX9 G3D (but if you go too high, your’ll have some glitches, 3D should be perfect in this game, which is like perfect native).

    Bioshock 2 reach stable 90fps at 2880p G3D but you can’t really go above because it could crash. It’s still one of the best looking native like VR games.

    Bioshock Infinite handle very high resolutions (more than 2880p, even on a GTX1080) and you don’t even need Virtual Monitor because windowed mode allow you to use any resolution/ratio you want !

    I’m currently playing Atomic Heart and 2880p is smooth. 3840p works but it’s harder to fight.

    Immersive screen seems sharper to me. You need higher resolution in full VR.

    Of course with non 4:3 headset, you’ll have more megapixels, so 4:3 is better I think.

    #220737
    Benedict81
    Participant

    Yeah, I dialed some settings in last night that I find good. 3840×2880 I find is decent resolution and runs great.

    Other thing I tried last night was to run “OpenXR Toolkit” with Vorpx. Now I do remember reading Ralfs comment that the foveated rendering isn’t really useful with Vorpx (doesn’t give any performance boost really), but the thing that did work wonders was the CAS sharpening that you can activate from OpenXR Toolkit. CAS sharpening with Vorpxs own sharpening tool in the image settings gave the image quality I was looking for. I am running the CAS at full 100% and on top of that all the Vorpxs sharpening sliders on full. Now this might not be for everyone, but atleast for me the image really started to pop with this setup. Granted I’ve only tried one game so far (Metro Last Light) but one can always dial the sharpening game by game.

    Weird thing with this combination was that the Vorpxs own texture sharpening thingy (the second slider) seems to work better when running the CAS sharpening (without CAS I kept the texture enchanment/sharpening off because it seemed to introduce this almost aliasing like shimmering everywhere).

    #220741
    Boblekobold
    Participant

    Very interresting thank you !

    I would like to try on my reverb G2. It’s not like OpenXR tool from Microsoft Store I guess. So I must download OpenXR ToolKit here ? :
    https://mbucchia.github.io/OpenXR-Toolkit/#setup

    #220744
    Benedict81
    Participant

    Yeah, thats the one.

    Played through Last Light and I ended up turning the texture sharpening off (it sort of worked on some parts but still caused that aliasing). Cranked up the resolution to 4096×3072 or something like that in 4:3 and that is probably the max resolution that Im going to use with Vorpx. With Last Light I had to up the virtual desktop resolution to something similar to the game reso or it bugged out the graphics on the lower part of the screen, not a huge issue and I suspect this might be a game spesific thing. Going to try another game tonight.

    #220764
    Benedict81
    Participant

    Some technical questions again, with more experience on using Vorpx.

    – What if any procedure is there to launch Vorpx? This might be a problem with my rig, but for example, I start my comp for gaming, I start Pimax tool first with the headset on and it connects and then I start Vorpx from the ‘start Vorpx’ shortcut. Everything is fine up to this point, but then I try to start either the desktop viewer or the virtual monitor and nothing happens. Usual remedy for this is to restart my computer all over and then it works.

    – About performance. What is the ‘headset FPS’ that shows on the FPS counter? Im experiencing weird drops in it when playing Bioshock Infinite. The headset FPS drops to something like 20 or so (from steady 120). Weird thing is, I can fix this by going in to the game settings and graphics options and it goes back to normal. Maybe a glitch with the game, can’t remember experiencing this with Metro Last Light. Only happens maybe once or twice on a several hour gaming session.

    #220774
    Boblekobold
    Participant

    There is also a direct shortcut option, but I don’t think it’s compatible with Virtual Monitor when needed.

    I have some problems too since I switched to V24 (and sometimes Virtual Monitor doesn’t hook, but It may be just me, because I tweaked some things ?)
    I think Ralf said to not do that (so maybe don’t), but you can simply restart VorpX Service instead of your computer. I works for me.

    Concerning framerate, the information must be somewhere on the forum. Did you see you have options to cap framerate ? And sync options like Judder Protect ?
    It has an impact on framerates.

    I think VorpX don’t need the game to reach high framerate to feel smooth because of this double framerate mechanics.

    #220775
    Boblekobold
    Participant

    It seems OpenXR Toolkit isn’t supported anymore. Is it save to use with a Reverb G2 ? (Knowing current WMR problems)

    Does it really improve image quality ?

    #220777
    Benedict81
    Participant

    Yeah, you can use it. The author doesn’t update the software anymore though.

    #220778
    Ralf
    Keymaster

    @ Benedict81

    Ideally the headset FPS should always be the refresh rate of the headset. You might want to prefer 90 or 72 over 120 to make that easier. Unfortunately vorpX does not have full control over keeping it stable, headset vendor runtimes may decide to throttle on their own if e.g. the GPU usage becomes too high.

    What you can do on your end to avoid such situations is e.g. setting a framerate cap in the vorpX menu or reducing gfx settings/resolution in the game options. There should ideally be some performance headroom to make it easier for the game on one hand and vorpX/the headset runtime on the other hand to work smoothly together.

    #220827
    Benedict81
    Participant

    Ok, I have to get back to this headset FPS thing. Last night I noticed a weird behaviour with this. Played Homefront The Revolution and Prey and with both games I get those moments when the headset FPS just suddenly drops (to very low, like 10-20 FPS) and I noticed that what fixes this is to just move my head, look around a bit and boom, FPS goes back to full! Im at loss with what might be causing this. I usually turn the headtracking off cause I just like to look around with the mouse. Any ideas? The HMD is Pimax Crystal with the latest updates (got rid of the PimaxXR software coz Pimax integrated this into Pimax Play -tool recently).

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