OpenVR fholger VR Perf Kit (FSR)

WarPig · January 20, 2022, 6:29pm

Ooooh! Something new to try. And it appears I may have been granted my wish, sorta since now we can adjust the upscaling radii, not just the sharpening.

fearlessfrog · January 20, 2022, 7:24pm

Just gave it a quick go in DCS VR with just the defaults left alone (FSR, .77, foveated off) and it works very nicely indeed. Could read everything in my beloved Viggen pit, plus was below 11ms/90Hz in the Caucaucaucausus (sp) on the ground.

I’ll try some other stuff later, but it looks just as good or better than what we had before.

Note: Don’t forget to put back your original openvr_api.dll, as this kit uses a different dll to inject (dxgi.dll)

fearlessfrog · January 20, 2022, 7:58pm

I fiddled around a bit, and still like NIS at 0.8 and sharpening at 0.9 (too high for most tastes, but I need every cathode ray I can get from the Viggen radar mush). The Fixed Foveated Variable Rate Shading (whew) didn’t seem to do much, at least in terms of performance.

I ran a quick On / Off framerate comparison using my regular hands-off Hornet Free Flight over Cauc. First graph is it using the above settings and then not using it:

The thing that’s more dramatic in VR is that when using it I get the 9ms frame timings which allows the headset to use 90Hz, while when I don’t I’m about 12 - 13ms and it’ll repeat frames. The 11.1ms timing is crucial for 90Hz VR, so while 9 vs 12 ms doesn’t seem like a lot, it translate into halving performance in VR (because of that native refresh rate).

On

Off

chipwich · January 20, 2022, 9:06pm

Oh wise and fearless one, what do you gather the abbreviation for the shift key modifier would be? Prefer that over ctrl.

fearlessfrog · January 20, 2022, 9:08pm

You tried shift?

More helpfully, they look like they are here:

github.com

fholger/vrperfkit/blob/037c09f3168ac045b5775e8d1a0c8ac982b5854f/src/hotkeys.cpp#L95


      
          		};
          	}
          
          	struct HotkeyState {
          		std::vector<int> keys;
          		std::function<void()> action;
          		bool wasActive = false;
          	};
          	std::vector<HotkeyState> g_hotkeyStates;
          
          	std::unordered_map<std::string, int> g_virtualKeyMap = {
          		{ "backspace", VK_BACK },
          		{ "tab", VK_TAB },
          		{ "enter", VK_RETURN },
          		{ "return", VK_RETURN },
          		{ "shift", VK_SHIFT },
          		{ "lshift", VK_LSHIFT },
          		{ "rshift", VK_RSHIFT },
          		{ "ctrl", VK_CONTROL },
          		{ "lctrl", VK_LCONTROL },
          		{ "rctrl", VK_RCONTROL },

chipwich · January 20, 2022, 9:59pm

Err no. Of course I wouldn’t have thought to look at the source code either. Remember who you’re dealing with.

fearlessfrog · January 20, 2022, 10:05pm

I keep starting it up and shutting it down to change settings, despite staring at the keys that would allow me to change it on the fly, so if there’s jackets in this club then I want one.

WarPig · January 21, 2022, 12:36am

Okay, first off: I am computer stupid. Making DCS and all of its accessories work is right at the edge of my meager mental capability.

That admission out of the way:
How do I install the new version? I read the instructions which say to extract the .dll file and the .yml configuration file. When I download the .zip archive, I do not see any .dll file. Is there a different download link I should click on?

Edit: Nevermind, I finally found the link, under releases, off to the right of the page. I’d looked at that page several times without seeing that; I was downloading the entire source code, not the release itself. Leaving this as a lasting memorial to my computer stupidity.

Also: Has anyone in the history of mankind ever actually purchased winrar?

jross · January 21, 2022, 12:50am

This is primarily for FS2020, right? The performance gains? Either I’ve already stretched my lil performance pony as far as I can, or I did something wrong - I just didn’t see much, if any gain in DCS.

It could just be my eyes however: I’m very far-sighted; the “;” and “:” symbols on my keyboard are indistinguishable for instance, but I can ID a Mirage F-1 at 8 miles (real world, had one pass overhead today).The MFD’s are always going to be a tad blurry for me; I’m just used to it.

Anyway…

Several years ago. But I’ve used 7Zip for that last, oh decade. Seems fine on both Win10 and 11.

WarPig · January 21, 2022, 12:59am

Unfortunately this no longer plays in harmony with ReShadeVR, since both apps (?) use their own version of dxgi.dll. It’s too bad because I really like what ReShade does to DCS in VR. I’ll have to play with it to see if there’s any performance gain over the old version, but so far it’s too close to tell.

chipwich · January 21, 2022, 1:02am

We are discussing it in the context of DCS, but it should work for any app which uses OpenVR. < look at me pretending to know what I’m talking about.

Since most of us are using OpenXR with MSFS, I don’t think that it works with that. < again, purple dinosaur talking here.

You should get a noticeable boost in fps. If not, it makes me feel like it’s not enabled or not installed in the \bin folder.

jross · January 21, 2022, 1:03am

Thanks, I’ll have another go at it.

WarPig · January 21, 2022, 1:04am

What app are you using to look at performance?

fearlessfrog · January 21, 2022, 1:08am

The way to remember it is OpenVR is the new name for SteamVR, where Valve tried to make their stuff the standard and released the API spec with no patents/royalties. No-one bit (or rather Facebook/Oculus ignored it, as having designs on PC VR at the time), so it took OpenXR to be the new open standard. Pretty much the only thing to use OpenXR is MSFS. So this thing for OpenVR will work with X-Plane, IL-2 BoX, DCS, and pretty much anything WMR that uses SteamVR.

The charts and recordings are are from CapFrameX - Driver Comparison 457.30 vs 466.11 for DCS 2.7 & MSFS VR.

For a live view I just enable the Performance Graph in the SteamVR desktop app. You can right click on it and get the options. The colors and framerate timing give a good indication on how things are going (green good, yellow on the limit and reprojecting, red pauses etc.). In the developer settings of the same app you can enable the chart in VR as well if you don’t want to nose peek.

fearlessfrog · January 21, 2022, 1:12am

I noticed that, and it’s a bit ironic considering they are from the same guy. I’ll poke around to see if it’s possible to run a shader on top of this.

WarPig · January 21, 2022, 1:14am

If you find an answer, I would love to know. ReShade VR just makes DCS look so much better, with zero performance hit that I can see.

WarPig · January 21, 2022, 1:14am

Thanks!

fearlessfrog · January 21, 2022, 1:19am

Ok, sorry about the wait but it looks like you can rename the dxgi.dll from ReshadeVR-sharpen_color release to d3d11.dll and it still might work as a hook. Warnings from the author here:

github.com/fholger/vrperfkit

Reshade + New PerfKit

opened 07:57AM - 19 Jan 22 UTC

closed 11:08AM - 19 Jan 22 UTC

DJSlane

I love the new method, but it seems that it necessarily prohibits the use of you…r own openvr_alpha2 from last year (which I just discovered along with Reshade) as it uses the dxgi.dll. Is there a way to use or combine both? My god I just fell in love with what Reshade could do with Your Preset + CAS + DFX. I had to revert to using your openVR_api.dll method just so I could do the FSR AND Reshade. If there's a way I'd love to use your new performance kit in addition or combination as I'm very excited about the addition of VRS and FFR and don't want to miss a trick! This is especially useful for Wide FOV (such as Pimax uses) as the vision is distorted (chromatically or by way of barrel distortion) anyway. Also just thanks man. THANKS! Literally your work is the best thing to happen to my VR experience! You are like a digital optometrist!

I’m not at a PC (on phone at the slowest restaurant in the universe right now, if I don’t post again it’s because I’ve died of hunger) but will try later.

WarPig · January 21, 2022, 1:41am

Trying it now, will report back!

ETA: It works! Awesome, thanks for finding that! Now to turn off sharpening on OpenVR FSR, and see how that looks…

I can’t see that Fixed Foveated Rendering is even working for me, it doesn’t seem to change anything.

fearlessfrog · January 21, 2022, 1:53am

Cool. I’d be tempted to just use Reshade for color / hdr effects alone and this one for any sharpening and scaling. You want to make sure both aren’t sharpening

Maybe this one will work as well?

I have a really bad Caesar Salad now, so still feeling a bit hangry.