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planetary atmosphere challenge.

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  • #31
    Originally posted by fixeighted View Post

    I note that no dev types have commented on this thread as yet...that's probably because they are already hard at work on the fixes and upgrades
    i suspect also because its not currently possible to simulate an earth atmosphere realistically in vray
    Last edited by super gnu; 01-08-2022, 08:10 AM.

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    • #32
      quite late to the party but I loved the idea right away.
      GPU, VolumeGrid, VRayDistanceTex.
      Click image for larger version

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      and reference:

      Click image for larger version

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      Attached Files
      Marcin Piotrowski
      youtube

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      • #33
        sunset, better maps:

        edit: replaced 006 with the moon (displacement)
        Attached Files
        Last edited by piotrus3333; 10-08-2022, 02:12 AM.
        Marcin Piotrowski
        youtube

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        • #34
          Just thinking again about this...sort of.
          I need an earth zoom for a hopefully upcoming project and the issue is the size of the Earth map.
          I guess @supergnu, that you got yours from the same company as you are doing this for?
          If not, and you didn't find them already, I managed to hunt down a repository for the enormous maps from
          2004 http://www.opengutenberg.net/nasa/bmng/world_500m/
          They may still be at the NASA site but this is a simple list, so still worth bookmarking.

          It contains tiles for 12 months of seasonal change, so very useful for anyone else that could use them.
          Final image is 86k wide/1.3gb, which was impossible to use when I first found these almost 20 years ago, or whenever they first
          were published...now, no problem
          https://www.behance.net/bartgelin

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          • #35
            Originally posted by piotrus3333 View Post
            sunset, better maps:

            edit: replaced 006 with the moon (displacement)
            Wow, this is fantastic!
            https://www.behance.net/Oliver_Kossatz

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            • #36
              anybody tried that with GPU?
              Marcin Piotrowski
              youtube

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              • #37
                next time I will try CPU. volume grid gets way too big on GPU as there is no way to cut it with geo. it's too slow but atmosphere behaves quite ok I guess (no ozone and mie accounted for).

                max file attached (2020).

                also version with VRayFastSSS2 (simple):
                Click image for larger version

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                Attached Files
                Marcin Piotrowski
                youtube

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                • #38
                  I would love to but my 2080ti can't handle the textures

                  Moon image looks great
                  https://www.behance.net/bartgelin

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                  • #39
                    Originally posted by fixeighted View Post
                    I would love to but my 2080ti can't handle the textures

                    Moon image looks great
                    moon shot is a ripoff from nasa’s gallery, there was no memory left for displacing clouds..

                    can you fill VRayVolumeGrid with VRayDistanceTex on cpu? I think this setup could be faster on cpu (fraction of grid size).
                    Marcin Piotrowski
                    youtube

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                    • #40
                      Yeah all my tests were cpu and I can't remember having any problems with all
                      the sss, displacement, vgrid and whatever else.
                      I think I might have tried gpu and probably as usual something immediately was unsupported so reverted to cpu
                      to save the hassle.
                      https://www.behance.net/bartgelin

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                      • #41
                        I thought this was an inspired presentation and worth watching the entirety of, although the planetary stuff is mostly at the end.
                        I also thought, if a Blender addon can do this then surely Vray is capable of doing so, so someone please tell me it's being worked on right now
                        https://www.youtube.com/watch?v=81pi...hannel=Blender

                        The addon is here https://www.blendermarket.com/produc...estial-objects
                        https://www.behance.net/bartgelin

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                        • #42
                          ok well that is depressing! ive bashed my head against a wall for many many hours on my earth model... most things i try absolutely kill rendertimes and nothing looks "right" in all scenarios..

                          now i see blender can do it in realtime with intuitive controls and all the subtleties ive been failing to create.

                          come on chaosgroup! some more shaders pls, or a tutorial as to how to achieve what they are doing there from one of your experts..? ... its not like autodesk are gonna do it (ha!)

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