twistking Posted October 27, 2023 Posted October 27, 2023 Hello, i'm plannnig to get into VR DCS, but still have many questions before i make the expensive step. How has motion reprojection evolved over the last years? How does DCS cope with motion reprojection? Are there still problems with f.e. the warbird's propellers causing pronounced artifacting? In "common" VR games that i've played, i did not really notice ASW being on (45->90). Will that translate to DCS? How do different implementations of motion reprojection differ? Is oculus (ASW) still the best solution, or did the others close the gap? Did openXR change anything in that area? Has openXR it's own motion reprojection? If so, how and where would you choose which reprojection to use? How is spatial reprojection handled with OpenXR? I assume that spatial reprojection is done by the HMD driver and not openXR. Is this correct? I further assume that spatial reprojection is always on and cannot be forced off, correct? Thanks. My improved* wishlist after a decade with DCS *now with 17% more wishes compared to the original
Jive Posted October 27, 2023 Posted October 27, 2023 OpenXR motion reprojection is very smooth, I used to use it exclusively with a Reverb G2. At 90hz-45fps it feels smoother than a native 60hz-60fps. However this comes at a cost to image quality as you mentioned. Props are blurry, lines on something like a modern MFD AA radar warp, artificating can be seen around canopy edges at low level and fast moving aircraft can be difficult to identify by type as they appear with less distinguishing shape due to artificating. Everyone has different tolerances and almost everything VR comes at some kind of trade off but there's usually a configuration you'll find acceptable. I didn't mind the artificating, I prioritised a smoother experience, even if it dips to 30fps it still feels smooth and doesn't judder, although as FPS drops artificating tends to increase. Now that DLSS is here i've opted for 60hz, a higher Pixel Density, with no MR. I'm enjoying the general clarity for the expense of the streaking blur on fast moving objects coming from DLSS atm. Again, everyone has their own preferences and tolerances. I'd advocate spending some time with any given setup you configure before deciding as you may find you adjust to things quite quickly. 1
twistking Posted October 27, 2023 Author Posted October 27, 2023 33 minutes ago, Jive said: OpenXR motion reprojection is very smooth, I used to use it exclusively with a Reverb G2. At 90hz-45fps it feels smoother than a native 60hz-60fps. However this comes at a cost to image quality as you mentioned. Props are blurry, lines on something like a modern MFD AA radar warp, artificating can be seen around canopy edges at low level and fast moving aircraft can be difficult to identify by type as they appear with less distinguishing shape due to artificating. Everyone has different tolerances and almost everything VR comes at some kind of trade off but there's usually a configuration you'll find acceptable. I didn't mind the artificating, I prioritised a smoother experience, even if it dips to 30fps it still feels smooth and doesn't judder, although as FPS drops artificating tends to increase. Now that DLSS is here i've opted for 60hz, a higher Pixel Density, with no MR. I'm enjoying the general clarity for the expense of the streaking blur on fast moving objects coming from DLSS atm. Again, everyone has their own preferences and tolerances. I'd advocate spending some time with any given setup you configure before deciding as you may find you adjust to things quite quickly. thanks for the reply. a few quick follow-up questions: G2 can run at 60hz natively? Can it do other refreh rates as well, or only 60 and 90? When you use motion reprojection on openXR, does it automatically disable the WMR motion reprojection? Is it very much notable when motion reprojection kicks in (from 90/90 to 45/90)? I mean apart from the artifacting accuring with motion reprojection, does the actual switching create judder or freezing the moment it changes? Have you experience with oculus ASW compared to openXR motion repro? I have a quest 2 and find ASW surprisingly effective there, but have not tried with DCS, because i would never be able to even reach 30fps... My improved* wishlist after a decade with DCS *now with 17% more wishes compared to the original
Jive Posted October 27, 2023 Posted October 27, 2023 4 minutes ago, twistking said: thanks for the reply. a few quick follow-up questions: G2 can run at 60hz natively? Can it do other refreh rates as well, or only 60 and 90? When you use motion reprojection on openXR, does it automatically disable the WMR motion reprojection? Is it very much notable when motion reprojection kicks in (from 90/90 to 45/90)? I mean apart from the artifacting accuring with motion reprojection, does the actual switching create judder or freezing the moment it changes? Have you experience with oculus ASW compared to openXR motion repro? I have a quest 2 and find ASW surprisingly effective there, but have not tried with DCS, because i would never be able to even reach 30fps... Only 60hz or 90hz on G2 I'm not too knowledgeable but afaik it's just OpenXR reprojection or SteamVR's reprojection. WMR basically is OpenXR (I think) I never got to 90 haha, not sure if it's noticeable. I didn't tend to notice right away when it went from 45 to 30 though No experience with ASW I'm afraid 1
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