Suggestion: Brainwarp 2.0 feature - x2 5:4 aspect ratio rendered slices blended together per eye to eliminate distortions and plastic aspheric or canted fresnel lenses in future models

[Mantidtings]

@anon74848233 @DerekVVV @Doman.Chen @Alan.sun @PimaxUSA @Pimax-Support @PimaxVR

If Pimax considers looking into either Aspheric plastic lenses or canted fresnel lenses in a future 2020 release Pimax 8KX Special Edition, or 5K+/XR Pro and 8K Pro in 2020 (with the extra panel utilization of the 8KX and the new lenses, 1080p upscale for the 8K Pro {faster, less performance requirement and clearer image})

Blending two 5:4 display slices per eye in the Pitool rendering profile, similar to how StarVR does, would reduce distortion further and possibly eliminate it entirely, instead of stretching 5:4 images into 16:9 display? (Which gives the peripheral distortion effect)

There could be a 1080p and 2160p slice mode (1080p or 2160p per rendered slice. (4 total slices, 2k or 4k per eye in two slices), eliminating distortion by having x2 5:4 rendered images per eye, instead of stretching one 5:4 image over a 16:9 screen per each eye)

@VRGIMP27

What I do think would be possible in software would be a 1080p mode where you slice the screen up into maybe 3 or 4 bands, and you do sliced time warps at 1080p.

For example, you render the far left portion of the screen @1080p, hold in time warp, center at 1080p, hold in time warp, render far right .

Picture a band moving across your fov horizontally at such a fast rate that your eyes don’t notice. Because you could send 1080p, you get rid of the scaling issues, keeping one to one and you get more detail overall.

https://imgur.com/KiJkpnS

maybe @SweViver can pass this along? @kons what do you think?

@kons

I’d rather Pimax work on StarVR’s approach, there’s no point in going aspheric because the current rendering and lens design is a dead-end road. If Pimax splits the monoscopic 145 FOV into 2 rotated views (still on a single screen) and then blends the views together with a shader, which is now hardware supported on the Turing 20-series GPUs, then they can get a nearly full FOV with a lens that accommodates no more than 80 degrees horizontal and 120 vertical. The lower horizontal FOV avoids the linear projection issue where the periphery is horribly stretched with wasted pixels, necessitating displays with a 16:9 ratio instead of the ideal monoscopic 5:4 ratio as seen in StarVR. By eliminating that stretching and reducing the screen ratio any aspheric design would be much simpler, so going aspheric now would be wasted effort.

[shinytomb]

Sounds interesting.