TressFX: A new frontier of Realism in PC gaming

Discussion in 'Rendering Technology and APIs' started by UniversalTruth, Feb 25, 2013.

  1. UniversalTruth

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  2. Brad Grenz

    Brad Grenz Philosopher & Poet
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    Finally, a shampoo for all your virtual girlfriends!
     
  3. Arwin

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    Heh. But it looks interesting regardless.
     
  4. lanek

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    And you have not seen the complete Press advertisement.


    [​IMG]

    Anyway, after think to it and find the Tombraider slide.. I ask me if it is not just a way to render water, rain etc on hair as they specifically speak about a " new DX11 effect " ( Tombraider is essentially in a rainy environnement )

    [​IMG]
     
    #4 lanek, Feb 25, 2013
    Last edited by a moderator: Feb 25, 2013
  5. Malo

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    I think hair and cloth rendering should be the next biggest advancement in game development.
     
  6. Laa-Yosh

    Laa-Yosh I can has custom title?
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    Not just rendering but animating them, a solid collision free implementation will not be easy.
     
  7. DieH@rd

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    Tomb Raider dev:

    "Some parts of the environment do destruct, but you can't just go and blow the entire island apart.
    Our most demanding effect.... Well, look at the time... I think we'll have to cover that tomorrow!"

    http://forums.eidosgames.com/showpost.php?p=1865802&postcount=92


    I just hope this will work on Radeon 6xxx line.
     
  8. lanek

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    Nice find..
     
  9. milk

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    What do you mean by collision free? Don't you want to have hair and cloth colide with stuff?
     
  10. MfA

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    Hair/clothing/gear clipping is a major distraction in RPGs ... and the current solution of just removing choices is lackluster.

    So yeah they need collision detection and IK.
     
  11. DieH@rd

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    #11 DieH@rd, Feb 26, 2013
    Last edited by a moderator: Feb 26, 2013
  12. lanek

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    As your link return a database error... ( oups fixed now, i remove the screenshoots, as the link is working now, no need to got them 2 times )


    http://www.guru3d.com/news_story/amd_tressfx_featured_in_tomb_raider_lara_croft_reborn.html



    AMD has been teasing with a small TressFX feature for the past couple of days. We can uncover what this really is, it is a new more realistic hair simulation that will be introduced in Tomb Raider: Lara Croft Reborn. Since the dawn of the 3D era, characters in your favorite games have largely featured totally unrealistic hair: blocky and jagged, often without animation that matches your character’s movements. Many games have attempted to disguise the problem with short haircuts, updos, or even unremovable helmets. But why? Simply: realistic hair is one of the most complex and challenging materials to accurately reproduce in real-time. Convincingly recreating a head of lively hair involves drawing tens of thousands of tiny and individual semi-transparent strands, each of which casts complex shadows and requires anti-aliasing. Even more challengingly, these calculations must be updated dozens of times per second to synchronize with the motion of a character.

    A New Frontier of Realism
    Lara Croft is an iconic character with an equally iconic ponytail. Re-imagining Lara and her haircut for the 2013 release of Tomb Raider wasn’t just an opportunity to modernize the character, it was an opportunity to substantially advance in-game realism by tackling the long-standing challenge of unrealistic hair. Through painstaking collaboration between software developers at AMD and Crystal Dynamics, Tomb Raider proudly features the world’s first real-time hair rendering technology in a playable game: TressFX Hair.


    The Science of TressFX Hair
    TressFX Hair revolutionizes Lara Croft’s locks by using the DirectCompute programming language to unlock the massively-parallel processing capabilities of the Graphics Core Next architecture, enabling image quality previously restricted to pre-rendered images. Building on AMD’s previous work on Order Independent Transparency, this method makes use of Per-Pixel Linked-List data structures to manage rendering complexity and memory usage.

    DirectCompute is additionally utilized to perform the real-time physics simulations for TressFX Hair. This physics system treats each strand of hair as a chain with dozens of links, permitting for forces like gravity, wind and movement of the head to move and curl Lara’s hair in a realistic fashion. Further, collision detection is performed to ensure that strands do not pass through one another, or other solid surfaces such as Lara’s head, clothing and body. Finally, hair styles are simulated by gradually pulling the strands back towards their original shape after they have moved in response to an external force.

    Graphics cards featuring the Graphics Core Next architecture, like select AMD Radeon HD 7000 Series, are particularly well-equipped to handle these types of tasks, with their combination of fast on-chip shared memory and massive processing throughput on the order of trillions of operations per second.
     
    #12 lanek, Feb 26, 2013
    Last edited by a moderator: Feb 26, 2013
  13. Simon F

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    I do hope the source code has lots of numerical integration so it can have variables such as "TressSumA" and "ConditionR".

    I suspect you might also have to remove certain repeating frequency bands in the AA with a filter....
     
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  14. Gerry

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  15. Simon F

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    I didn't think my puns were that awful. :)
     
  16. jimbo75

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    I'm guessing much of this effect will still be done "by hand" on the main character, and that we're still quite some way from having all characters in a game have hair like this drawn procedurally?
     
  17. OlegSH

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  18. Arwin

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    Very funny. But let's see it in movement already, it seems very impressive. And it is useful that AMD is showing initiatives like these - now that they are also a strong player in the console world, they can stand to benefit from it very much.
     
  19. Alexko

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    In movement, in the official trailer:



    Hopefully the actual game will really look like that.
     
  20. Arwin

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    That trailer is all CGI?
     
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