4 ms·

In the center of the lenses, the circumference resolution is a bit over 5120, but definitely less than 5760. Even at 5120, it is a bit overkill (and potentiall

In the center of the lenses, the circumference resolution is a bit over 5120, but definitely less than 5760. Even at 5120, it is a bit overkill (and potentially aliasing) at the edges: https://twitter.com/ID_AA_Carmack/status/975198157838499840 https://twitter.com/ID_AA_Carmack/status/975198157838499840 You are off by a factor of 2 in your pixel calculation, because 5k x 5k is for a stereo pair of spheres. Equirect projections waste a fair amount, but compared to the 300% miss to get to 60 fps stereo, it isn't dominant.

rgbjoy 8y ago
Would we ever see a dynamic resolution that tracks where you are looking at and just lowers resolution outside the point of interest? Wouldn't that save a lot?
- sp332 8y ago
  The article is about doing that for pre-recorded video. For live 3D VR rendering, it's already in some game engines. Batman Arkham VR uses it (it's in the settings). More info https://www.youtube.com/watch?v=gV42w573jGA https://www.youtube.com/watch?v=gV42w573jGA
- thefreeman 8y ago
  https://en.wikipedia.org/wiki/Foveated_rendering https://en.wikipedia.org/wiki/Foveated_rendering
  - rgbjoy 8y ago
    I thought I was smart for just 10 seconds of my life... thanks for the link
  - mcculley 8y ago
    In the mid-90s I worked on a system that did that to maximize image processing power, CCTT: https://www.youtube.com/watch?v=HY5M1jM5ggw https://www.youtube.com/watch?v=HY5M1jM5ggw
Retric 8y ago
Ahh, good to know. Anything you can do about someone tilting their head? That feels like the biggest remaining immersion breaker with pre-rendered stereoscopic videos.
- JohnCarmack 8y ago
  Need some form of RGB+D for that. I have a player for that, and sometimes it looks fantastic, but the silhouette edge artifacts can sometimes look really bad. Considering some ways of "relaxing detail around the edges".
  - owlcreektech 8y ago
    This is Mike, I would love to try it out. I can see this working out if you use a gaming engine to add a depth layer to the composition stream. Have you played with Google's Seurat?

rgbjoy 8y ago

Would we ever see a dynamic resolution that tracks where you are looking at and just lowers resolution outside the point of interest? Wouldn't that save a lot?

sp332 8y ago
The article is about doing that for pre-recorded video. For live 3D VR rendering, it's already in some game engines. Batman Arkham VR uses it (it's in the settings). More info https://www.youtube.com/watch?v=gV42w573jGA https://www.youtube.com/watch?v=gV42w573jGA
thefreeman 8y ago
https://en.wikipedia.org/wiki/Foveated_rendering https://en.wikipedia.org/wiki/Foveated_rendering
- rgbjoy 8y ago
  I thought I was smart for just 10 seconds of my life... thanks for the link
- mcculley 8y ago
  In the mid-90s I worked on a system that did that to maximize image processing power, CCTT: https://www.youtube.com/watch?v=HY5M1jM5ggw https://www.youtube.com/watch?v=HY5M1jM5ggw

Retric 8y ago

Ahh, good to know. Anything you can do about someone tilting their head? That feels like the biggest remaining immersion breaker with pre-rendered stereoscopic videos.

JohnCarmack 8y ago
Need some form of RGB+D for that. I have a player for that, and sometimes it looks fantastic, but the silhouette edge artifacts can sometimes look really bad. Considering some ways of "relaxing detail around the edges".
- owlcreektech 8y ago
  This is Mike, I would love to try it out. I can see this working out if you use a gaming engine to add a depth layer to the composition stream. Have you played with Google's Seurat?