[Radiance-general] 3D-360 video rendered with Radiance

[Andy McNeil]

Mark! That is awesome!

I've been playing around with 360 stereo renderings in Radiance too. I use
google cardboard and created an rcalc command for generating view rays
based on this:
https://developers.google.com/vr/jump/rendering-ods-content.pdf
I was planning to present some of my renderings at the workshop in August.
But your video puts my renderings to shame!

Earlier this week I was looking at image.c to see what it would take to add
native support for equirectangular view types, including both mono and
over-under stereo. I think the awkward part would be specifying the pupil
spacing for stereo renderings. I think we could use the length of the
direction vector for pupil spacing, but this would prevent adding depth of
field blur.

Andy


On Thu, Jun 30, 2016 at 9:16 PM, Mark Stock <mstock at umich.edu> wrote:

> Folks,
>
> I thought I'd let you know about my recently-completed 4-minute 3D-360
> video that was rendered with Radiance. The subject is a dynamic
> triangle mesh from a computational fluid dynamics simulation of a
> sphere of fluid with a density discontinuity. (Lots of grey
> cylinders.)
>
> The original (2D rendering) video is here:
> https://www.youtube.com/watch?v=OShSC1VyBi0
>
> The new video (3D-360, for GearVR and other VR HMDs) is in multiple places:
> https://www.youtube.com/watch?v=zGFMqEKiAGM
> https://vimeo.com/173000788
> https://www.facebook.com/mark.stock/posts/10153805081796376
>
> I'll provide a direct download link for all you Radiance fans, who
> know how hard this actually was:
> http://markjstock.org/vr/MarkStock_SmokeWaterFire_UHDlo_360_TB.mp4
>
> The rendering took 8 months on a 4.4GHz, 8-core Intel Haswell chip.
> Each original frame was 11520x11520 (in HDR, of course), but reduced
> to 3840x3840 for storage, and further reduced to 3840x2160 for
> publishing. In all, almost 1 Terapixel of primary rays were traced.
> The directory takes up ~600 GB. I used an rcalc/rtrace trick to
> generate the 3D-360 frames. The command line for each frame looked
> like:
>
> cnt 11520 11520 | rcalc -f 3d360.cal -e
> "XD=11520;YD=11520;X=0;Y=0;Z=0;IPD=0.02;EX=0;EZ=0" | rtrace -ab 2 -aa
> 0 -ad 32 -as 0 -dj 0.7 -ds 0.06 -u+ -dv- -x 11520 -y 11520 -n 3 -fac
> scene0695.oct > img_0695temp.pic
>
> I attached the 3d360.cal file in case anyone else is interested.
>
> Have fun, and good night!
>
> Mark
>
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