Another New Volumetric Fog Demo :)

Discussion in 'Architecture and Products' started by pocketmoon66, Oct 24, 2006.

  1. pocketmoon66

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    [​IMG]

    following on from this post http://www.beyond3d.com/forum/showthread.php?t=32439

    OpenGL Demo. Screenshot is from 6800GT

    Requires Nvidia GPU with Vertex Texture Fetch, FP16 blending, and err, stuff...

    Tested with 32bit XP drivers 84.32. Known VTF bug prevents it working on newer drivers.

    Uses Shadow Volume Reconstruction (entirely on the the GPU using Vertex Texture Fetch). Shadow Volume Mesh is used to render shadow but mainly used to calculates in-scatter. Uses a nasty but OK looking approximation, similar in prinicple to CryEngine2 Volumetric Lightning Video on ATi Dev site http://www.ati.com/developer/techpapers.html.

    Demo here:

    http://www.baddoggames.com/svr2.zip

    I'd be happy if you could post hardware and fps (but you'll need fraps!)


    [edit glut32.dll now included]
     
    #1 pocketmoon66, Oct 24, 2006
    Last edited by a moderator: Oct 25, 2006
    Pete, ChrisRay, jb and 1 other person like this.
  2. ector

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    If you want to attract feedback, better make it easy for people to run it :)

    No glut32.dll included = no try, I'm too lazy.

    Also you might want to think about adding that framerate counter in the titlebar or something, installing fraps just to give you a framerate is kind of overkill...
     
  3. pocketmoon66

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    bugger - I thought I had this time :roll: Update soon...
     
  4. Malo

    Malo Yak Mechanicum
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    Hey wait a second.... your not Humus? I'm confused!
     
  5. pocketmoon66

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    I am the the Anti-humus!

    But only in the sense that my work is generally buggy, a bit shoddy, and only works on Nvidia hardware ;)
     
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  6. Kanyamagufa

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    Damn, you weren't kidding...:smile:

    (meant in a fun way) =)
     
    #6 Kanyamagufa, Oct 25, 2006
    Last edited by a moderator: Oct 25, 2006
  7. Albuquerque

    Albuquerque Red-headed step child
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    LOL @ the responses and "anti-humus" ;)

    I'm willing to give this a whack on my little laptop's 7300 Turbocache mobility chipset on my Dell lappy. I'll report back later to see how it's going...
     
  8. Humus

    Humus Crazy coder
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    :runaway:
     
  9. pocketmoon66

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    I suppose I should be pocketmoon666 :twisted:
     
  10. FrameBuffer

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    Exactly what I was thinking .. anyhow nice to see another coder, now only if ATI was to spec and had VTF /wink ;p
     
  11. pocketmoon66

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  12. trinibwoy

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    How do you set the resolution on this thing? If I just open it up I get 65fps - 7900GTX-512 mobile.
     
  13. Aluadan

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    E6400@2700
    9700gto@690/780

    86fps.
     
  14. ChrisRay

    ChrisRay <span style="color: rgb(124, 197, 0)">R.I.P. 1983-
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    This is a pretty cool demo. :)
     
  15. Aluadan

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    Oops, 86fps with 4xAA/16xAF
    92fps without.
     
  16. Rufus

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    I assume you mean 7900GTO. I don't think the 9700 had a gto variant :roll:
     
  17. pocketmoon66

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    You can't (yet). Thanks for the fps though.

    The bottleneck in this demo (and it's a HUGE bottleneck for me) is vertex texture fetch from a non-displayed buffer, which is set at 256x256. The actual display res has close to zero impact on my 6800GT.
     
  18. ChrisRay

    ChrisRay <span style="color: rgb(124, 197, 0)">R.I.P. 1983-
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    anti aliasing does seem to effect it to some degree.
     
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