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NVIDIA Demonstrates Real-time Interactive Ray-tracing

Discussion in 'News' started by btarunr, Aug 18, 2008.

  1. GSG-9

    GSG-9

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    lol I had to look up the V5700 :eek:
    I guess that makes since, it was a tech demo so it would make since that they used 2 workstation cards vs. a Hd series card.


    Very Very true, my monitor looks better at 1680x1050 than 1920x1200 anyway. +1 for me :) (and 10%+ Performance increase)
     
  2. rflair New Member

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    @ GSG-9

    What I was saying from my first post was that there is a reason the Nvidia ray trace demo use an all grey environment, its easier to calculate just one color and its gradient shades being reflected, after all the only thing showcasing ray tracing is the car itself, the environment is not showing any and in one of the pics where the car appears to be near the glass of the building ray tracing should be happening to the glass.

    Nvidia's ray tracing demo isn't truly environmental it specific to the car.

    Ati's demo is just a better demo of ray tracing, the environment and all objects have ray tracing, plus color and nice textures.
     
  3. Valdez

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    Lol, you say this demo was presented on two 128-bit hd3800 (codenamed rv670)? :twitch:

    [​IMG]

    Sorry, v5700 based on rv730, not rv670. Anyway its less powerful than a hd3850/3870.
     
    Last edited: Aug 19, 2008
  4. DarkMatter New Member

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    FALSE and IT DOES.

    http://www.techreport.com/image.x/2...me_raytracing_at_Siggraph/NVIDIA_RT_demo1.jpg

    Not only that, but if you look enough on the image you will see that the building is reflected in the reflection of the card being reflected in the building glass. That is at least 3 bounces. And that's another thing we don't know and we shouldn't be talking about performance without that data. Nvidia could be calculating up to 10 bounces while Ati only one or two. The thing is we don't know a shit...

    All that I can say is search a bit, learn a bit.
     
    GSG-9 says thanks.
  5. rflair New Member

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    So what you are saying is that a true environment which has multiple colors and light being refracted from many angles and effecting the surfaces it ends up on is the same as flat grey objects doing the same?
     
  6. rflair New Member

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    Dang never saw that pic, much better view and perspective of what is happening.

    Yes and you are right, we don't know enough about either demo.
     
  7. DarkMatter New Member

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    Indeed. And not only that, but ray-tracing reflection/refraction tests occur on all surfaces and not only on reflective ones. Ray-tracing is a physically correct rendering method. This means it calculates the incidence of light on the surfaces and based on the reflection/refraction indexes it will reflect/refract or not. Not reflective surfaces don't reflect light because it's reflection index is 0, but the same calculation does occur as if it was reflective. The only difference is that the ray won't continue bouncing (won't be reflected) nor it will be splitted, as would be the case on a reflective AND refractive surface, such as glass.

    :eek: Splitted does not exist is just split isn't it? :eek::eek::eek::eek:
     
    GSG-9 says thanks.
  8. rflair New Member

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    Thanks, what you are saying puts everything into perspective and you explained it well.
     
  9. PCpraiser100 New Member

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    Whoa ok ok, but I do agree this is a tech demo. Its just that the shaders could be too complex for the consumers and stuff, who knows how long will the hardware finally catch up. Nvidia was demonstrating ray-tracing, and thats what they did, but the ridiculously expensive setup was running the tech demo at 30fps, its too demanding. Cinema 2.0 on the other has all those physics and stuff to deal with and the requirements don't really seem like a problem, especially when the video looked like it was running at probably 60-80 fps. BTW, insult taken. I'm not really a developer, I'm just a gamer who loves researching hardware every morning/night. However, my friends are mostly friends with developers. Oh and it is running at 1920x1080p, just got off the phone. My friend told me that he got the demo version of Cinema 2.0 a week ago, which had the system requirements on the disk. The setup that I told you were the recommended system requirements not the minimum. The minimum is Athlon X2 5000+, 3GB of RAM, and an HD 3650.
     
    Last edited: Aug 19, 2008
  10. DarkMatter New Member

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    Thanks. And sorry if I was rude at first. I sometimes (maybe always, sadly :() forget that people may lack the knowledge on something because no one cared to teach them. I learnt the lesson, I'll try to be more patient next time. I don't promise anything though. :p

    @PCpraiser100

    I don't know if things have change with the time and they have improved on that front or not. But the demo they made public was on 720p, I'm sure about that. As well as one of the representatives saying they couldn't achieve higher resolutions at the moment.
     
  11. PCpraiser100 New Member

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    Dude, its alright. I;m probably a bit more hardwired to AMD. BTW my friend is creating sweet videos and screenshots with the demo of Cinema 2.0, he is even thinking about visually reediting half-life 2 images with DX10.1 images instead, just for fun. its really cool, after all, Gordon's HEV suit really needs more bling lol.
     
  12. DarkMatter New Member

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    Sweet! And when are we going to see them? :)
     
  13. GSG-9

    GSG-9

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    Im glad I went to sleep that could have gotten nasty if I was around. Im still only on 6 hours of sleep though. Almost work time. :wtf:

    Im confused, he is taking the models from Half life and putting them in this other engine? (Like videos done in 3dsmax except cinema 2.0 and hence real time?)
     
    Last edited: Aug 19, 2008
  14. PCpraiser100 New Member

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    He is not really putting Half-Life in another engine, he is just modifying the shaders. Anyway, I can't really talk much about it or else people will be lining up for me and my friend so run along home lol. As for seeing screenshots in stuff he can't show me it under certain conditions from AMD. Or else :nutkick:
     
  15. GSG-9

    GSG-9

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    That would be something interesting to have access to. Looking for word to more info.
     
  16. PCpraiser100 New Member

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    Either way, we all know what companies are like when it comes to unveiling something that is expectd to be awesome. They make it better. With that in mind, only time will tell by how often will this software be used. Moving on to Ray-Tracing plz.
     
  17. PrudentPrincess

    PrudentPrincess New Member

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    Phew I'm glad this thread calmed down if you kept going on arguing and calling eachother names the thread would probably be closed and infractions would be handed out. (If they haven't already :laugh:)
     
  18. zithe

    zithe

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    The lighting is very nice. I want to see this in games. :D
     
  19. GSG-9

    GSG-9

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    I think we had some leeway left ;), Remember the thread on Religion Islam and Candle Which spawned out of of thread on Iraq? As long as its contained and stays on topic..
     

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