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SvennoJ on 09 October 2017
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caffeinade said:
SvennoJ said:
Since I've switched to mostly playing in VR, yes absolutely framerate > resolution. Actually 120fps > 60fps, it makes a visible difference in VR. Polybius and Trackmania Turbo are so silky smooth at 120fps, while fences and close detail still seem to strobe by at 60fps in DC and Dirt Rally.

There's not much you can sacrifice in VR. Any 2D elements stick out like a sore thumb. Black bars are out of the question and you're stuck with 110 degree fov putting a lot of extra geometry in view. Multi res rendering helps, since the edges are already lower res due to the way the optics work (higher pixel density in center). RE7 uses dynamic res, it drops down quite a bit when you sprint. It also uses lower res at the edges on the base ps4.


On a 2D screen 30fps never bothered me. DC before VR played perfectly fine at 30fps. Of course, since the VR version I haven't gone back to racing on a screen. The downgrade back to screen is so severe, I doubt 30 or 60 fps will make the slightest difference...

Foveated Rendering should help VR, and it should be relatively easy to do since you can have a camera right in front of the user's eyes.

Yup, it's what will make VR cheaper to render than full screen in the future. It's the same as multi res rendering, except more extreme and dynamic. However the early headsets are so low res that it doesn't help much, once 4K and 8K headsets become the norm, foveated rendering will cut the workload dramatically.

Instead of a full hi-res screen this startup is trying to do it differently
https://techcrunch.com/2017/06/19/this-startup-wants-to-build-vr-headsets-with-human-eye-resolution/
Move a high res image over the low res image keeping pace with where you look. Sounds complicated to make that work without being noticeable. Less moving parts is usually better.

Foveated rendering can also help making the headsets wireless. The image should compress a lot better for transmission, plus the software can aid the compression to preserve detail where you are looking. Dual 4K at 90hz is a lot of bandwidth, especially through wifi.