Nvidia DLSS antialiasing discussion *spawn*

Discussion in 'Architecture and Products' started by DavidGraham, Sep 19, 2018.

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  1. trinibwoy

    trinibwoy Meh
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    It’s hard to believe developers still haven’t figured out they shouldn’t base LOD on internal render resolution when upscaling.

    TAA: higher LOD, less fine detail, more blur, less jaggies
    DLSS: lower LOD, more fine detail, less blur, more jaggies

    Take your pick. What a shit show.
     
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  2. DegustatoR

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    https://videocardz.com/press-releas...ailable-for-all-developers-with-linux-support
     
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  3. trinibwoy

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  4. jlippo

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    Considering that there are still engines which have resolution dependant DoF and such, I do not find this surprising.
    Which is quite nice if it means that we can finally get rid of the common over sharpening.
     
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  5. TopSpoiler

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    From the DLSS programming guide:

    And NVIDIA added Auto Exposure feature in DLSS 2.2:

    This explains why the image quality has improved in DLSS 2.2.
     
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  6. DegustatoR

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  7. DegustatoR

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    Back 4 Blood gets DLSS support:

     
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  8. Dictator

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    NVIDIA DLSS Overview & Game Integrations presentation at was nice.

    They went over the basic gist of how DLSS 2.0+ is trained and how the training works in the context of the real time stuff happening on the GPU in the game with temporal samples and motion vectors. They talk about what a game needs for integration in straightforward steps. They then stress heavily through the rest of the presentation common mistakes they see in existing DLSS implementations that devs need to look out for and correct. They state that devs should be more thorough than just content that DLSS "works" after first integration, and actually do a:b comparison screenshots for various aspects of rendering to make sure they actually are doing the integration correctly. "DLSS should by design look extremely close to native, not just OK with discrepancies"

    0. Making sure jitter matrix is proper with their screen debugger.
    1. texture negative LOD bias not taking into account different internal resolutions from output ones
    2. LOD calculations for Decals, Geo, etc. not taking into account different internal res from output res
    3. Post-processing not being res scale aware, causing different aperture size or pixel size coverage for depth of field, chromatic aberration, etc.
    4. Motion Vectors not being properly done or resolving incorrectly (they have a debug for this)

    They mention at the end how DLSS is in a stage of active research still, with improveents being looked at for future versions:
    1. Performance improvements at same quality
    2. Visual stability and AA improvements for disocclusions or RT Reflections even
    3. DLSS awareness and improved reconstruction for elements of the scene that lack motion vectors, like most particles for example

    NV seems generally really aware of what makes a good DLSS implementation and which ones are lacking... which is reassuring instead of just slapping it poorly into a game and calling it a day.
     
    #2288 Dictator, Jul 23, 2021
    Last edited: Jul 23, 2021
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  9. DegustatoR

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    https://store.steampowered.com/news/app/269190/view/2981930579692456960
     
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  10. troyan

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    Looks like they didnt update die texture bias:
     
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  11. pharma

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    The DLSS SDK released by Nvidia allows you to view and adjust debug values for DLSS in DLSS 2.X games : nvidia (reddit.com)
     
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  12. pharma

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    Escape from Naraka Out Today, Features RTXGI and NVIDIA DLSS Support (2x Performance at 4K) (wccftech.com)
     
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  13. pharma

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    Nvidia's DLSS magic finally makes Red Dead Redemption 2 playable at 8K on an RTX 3090 | TechRadar
    August 2, 2021
     
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  14. Kyyla

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    Great. Now both guys playing at 8k can start with rdr2
     
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  15. pjbliverpool

    pjbliverpool B3D Scallywag
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    I wonder how good it would look downscaled to 4K via DSR though, i.e. if it looks better than native 4K while still being more performant than whatever native res is equivalent then it'd be worthwhile for a wider audience. An image quality and performance analysis of DLSSQ 4k, DLSSUQ 8K downscaled to 4K and native 4K would be pretty interesting.
     
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  16. trinibwoy

    trinibwoy Meh
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    You mean DLSS ultra performance at 8K right? That's 1440p internal resolution which is less than the 1800p that DLSSQ 4K uses. Might be an uphill battle.
     
  17. pjbliverpool

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    Sorry yes I did mean ultra performance (at 8k). DLSS quality at 4k is also 1440p though so its the same internal res for each.
     
  18. trinibwoy

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    Oh ok, thought it was higher like 1800p.
     
  19. pharma

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    August 14, 2021

     
  20. pjbliverpool

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    Interesting comparison. The DLSS shot looked better for most of the video IMO but it was clearly massively sharpened to achieve that look. I quite like sharpening, hence my preference, but it fell apart quite badly in that last scene with the trees where the DLSS shot was flickering quite a bit.
     
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