Polygons, voxels, SDFs... what will our geometry be made of in the future?

Discussion in 'Rendering Technology and APIs' started by eloyc, Mar 18, 2017.

  1. eloyc

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    Many thanks for sharing this with us! It's a long video and I'm very interested in watching it carefully, so I'll do that later.
     
  2. eloyc

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    Well, I watched the whole video. I liked it, but I missed seeing more practical material. For instance, they spend a lot of time saying how polygons are not suited for this and that, and how polygons have a lot of drawbacks related to a proper representation of matter and performance-wise (UV data, interactivity and dynamic simulation, etc.), but they don't show how their solution would be better in most of those aspects.

    I agree with them in polygons not being the best solution and that a volumetric solution is preferable and tech should move forward in this path, but if you say that UV is the devil because there's a lot of data in play, then please explain how those billions of voxels are not as bad (if not, worse) to manage in real time, and if you say that polygons limit the interactivity and dynamic simulations, please show some examples with your tech that feature a higher level of interactivity and dynamic simulation, not just carving stuff.

    However, I feel that this might be a good step forward and I understand the present compromises, so I will watch closely their progress.

    There's a part in this video where they explain precisely that (scaling and rotation), but they insist on using the term "voxel" and even say that their solution is more advanced that SDFs, point clouds, etc.
     
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  3. idsn6

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    Dennis Gustafsson has been doing impressive things lately with voxels. The regular structure is beneficial for ray tracing, global illumination, physics simulation, etc.



    Regarding Atomontage, there is still clearly a long way to go for the technology. There was a punch line toward the end of the presentation where a 20-second animation loop of a crocodile in empty space was shown to use 22 GB of memory. The demo had no voxel compression or disk streaming, granted, but Atomontage has been talking for years about compressing down to less than 1 bit per voxel, and it is disappointing to have nothing to show here; that sentiment applies to much of the talk, which is mostly aspirational. Voxels are definitely useful, and might well be the future, but with funding and a team they need to start demonstrating the advantages and applications without constant caveats.
     
    #83 idsn6, Oct 7, 2018
    Last edited: Oct 7, 2018
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  4. eloyc

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    I'd like to summon @sebbbi into this conversation. :-D

    Regarding their criticism towards SDFs and bearing in mind what you and the guys at Media Molecule achieved with SDF, do you still think that if there's a volumetric way to go voxels are better than SFDs?
     
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