Trilinear Test (Warning 0.5MB PNG)

Discussion in 'Graphics and Semiconductor Industry' started by Dave Baumann, May 20, 2004.

?

Which side is "Traditional Trilinear"?

  1. Left

    100.0%
  2. Right

    0 vote(s)
    0.0%
  3. Both

    0 vote(s)
    0.0%
  4. Neither

    0 vote(s)
    0.0%
  5. Can't Tell

    0 vote(s)
    0.0%
  1. breez

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    The point was to pick up the "Traditional Trilinear", not the one that looks best (yes, there's the possibility that optimized image looks better :) )
     
  2. Evildeus

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    Because the point of trilinear is to hide the step between each mipmaps and that can decrease the sharpness of the pic?
     
  3. K.I.L.E.R

    K.I.L.E.R Retarded moron
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    I made a guess that it was on the left based on staring at the image struggling to make any decision.

    I'm sure the vast majority of people couldn't tell the difference without either doing something like zooming into the image 800% or whatnot.

    So the statistics are flawed.
     
  4. Martillo1

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    Motion tests, please.

    Edit:

    Actually, I guessed it was the right by seeing it from more distance.

    Edit:

    Trylinear (ATI) v.s. Trilinear (*/NVIDIA) v.s. Brilinear (NVIDIA).
     
  5. tEd

    tEd Casual Member
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    ...with nvidias brilinear too
     
  6. mikechai

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    Excellent!

    :D
    ________
    HONDA VF1000F
     
    #46 mikechai, May 20, 2004
    Last edited by a moderator: Mar 12, 2011
  7. Martin Eddy

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    Actually I could see the difference better on the original pic.
    Bloodbob's pic just strained my eyes more.

    Oh god! I've got a killer headache after all this.

    Honestly I can't see any real difference within a game ,but as someone said here when the FX farce was in full swing, "It's a slippery slope"

    How long will it be before neither company gives us FULL TRILINEAR?
     
  8. bloodbob

    bloodbob Trollipop
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    How is it defeated because if they are using a different filter method on the mip-map the results can look vastly different I was showing off that point in another thread http://www.beyond3d.com/forum/viewtopic.php?t=12531 where one filter would produce a white mip and another filter would produce a grey mipmap. And as such that would invalidate any side by side comparision of the filtering methods.
     
  9. Bouncing Zabaglione Bros.

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    Well look at it this way: Trilinear is solution to the problem of visible mip-map transitions, but it does have the drawback of blurring textures (also undesirable). As soon as that mipmap transition problem is solved by a better solution, why would we need trilinear at all? Maybe this adaptive method is a step along the way. The ATI transitions are not visible in the same way as they are on Nvidia's solution to the same problem, so it certainly seems like a step in the right, as opposed to the wrong direction.

    One day, maybe there won't be multiple texures and mipmap transitions at all, so we won't be lamenting the loss of trilinear filtering to hide these transition artifacts then, will we?
     
  10. Xmas

    Xmas Porous
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    I don't think the options in the vote fit here. I couldn't tell which one was true trilinear, or whether there's true trilinear at all. But I could tell that they are different, and that I feel the right one looks better. There's a slight variation in brightness (depending on your gamma setting), and seen from a distance the right one looks a bit smoother.
     
  11. Ylandro

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    Yep... there should be an option: "after ruining my eyes for 15 minutes staring at the bloody picture, I tend to think I see a difference, but don't have a clue which one is better".

    For me, I voted both similar. Then looked again, and again, and again....
    And eventually, I think the left looks sharper while I see more color on the right. Could also be that the tears in my eyes are starting to distort it... :lol:
     
  12. Sxotty

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    Do you think it would work better if you had thicker lines? The lines here are like those illusions you look at that dance around before your eyes. At least that is what I think, the number of visual artifacts your brain makes is quite large :lol:
     
  13. Drak

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    You're bang on the money. Moire patterns occur when sampling a high frequency pattern at too low a resolution. That gave me a hint as to which one was trylinear. I couldn't see any moire on the right image on a 21 inch Vision Master Pro 510.

    edit: Now, I can see some slighter moire on the right after staring at the image for two-three minutes. But the moire on the left was more easily visible when scanning the image the first time.
     
  14. Drak

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    Dave, I think your coloured grating messes with the human visual system and causes some nasty adaptation effects. You don't want to move into the field of psycho-physics research, do you? :lol:
     
  15. digitalwanderer

    digitalwanderer Dangerously Mirthful
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    Way cool of 'em. 8) (At least they're returning someone's e-mails...unfortunately now I know it's a personal issue with me that they ain't returning mine anymore. *sadpanda* )

    Damn, it got me.

    I could tell some subtle differences 'tween the sides, but I couldn't decide which one was "better". (I didn't zoom in or nothing, just looked at the pictures as I thought that was the point.)

    Thanks Dave, I get it now. 8)
     
  16. Ostsol

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    Heh! I just checked the shot on an LCD monitor and can see zero difference. Given that this texture is in the area of "worst case scenario", I doubt that many game textures would show any noticable difference at all.

    At home on my 17 inch CRT I could definitely see that there was a difference, but it was quite subtle. Only when stepping back about a metre from where I normally sit was I able to really see the difference.
     
  17. Drak

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    Thanks again for that Dave. Do you know if ATI is defeating the optimisation by the content of the textures or some other means? I'm wondering if the more promiment moire patterns on the left (than the right) have anything to do with the optimisation-defeating mechanism or the different filtering method itself?
     
  18. digitalwanderer

    digitalwanderer Dangerously Mirthful
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    I just checked out Bloodbob's picture after reading Kruno's link and if I had studied that picture really carefully for a very long while I'm pretty sure I STILL would have chose the left side. :lol:
     
  19. Mephisto

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    There is no sense in comparing still images (especialy if they're provided by ATI) - mip map transitions are very annoying in the moving image, thats where brilinear has its flaws.
     
  20. Rodéric

    Rodéric a.k.a. Ingenu
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    I can see the difference and find the "correct" trilinear on a LCD screen.

    The only problem I have is that I find the left part better than the right... :roll:
     
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