Recent content by KARpott

  1. K

    Testing Nvidia vs. AMD Image Quality

    Do you want to know why some GERMAN sites have come up with this issue? This might sound stupid, arrogant or bigheaded or whatever, but the motivation for those guys to write about this mainly comes from our efforts at http://www.3dcenter.org/ in analysing IQ. Apart from some guys at beyond3D...
  2. K

    Radeon HD5xxx filtering issue

    I'm not the soft shadow expert, but if TMUs come into play, it could be related to the same issue. I just know the regular real time soft-shadowing technique, and it only has to use TMUs for reading screen buffers as far as I know. That shouldn't be affected by such problems. On the other hand...
  3. K

    Radeon HD5xxx filtering issue

    There are several reasons: - it depends on the engine, not on the game - those titles DO NOT HAVE ANY BUGS whatever that reduce image quality. So this argument is simply not valid here. AF is not something that changes from game to game, so the only thing you need is the right content and a...
  4. K

    Radeon HD5xxx filtering issue

    The article also states that the banding is not entirely gone, and they mention a member of 3DCenter as source, well guess who that is ;) But indeed, those shots show the problem. Without SGSSAA, there's a lot of aliasing, with SGSSAA, there's still a little banding visible.
  5. K

    Radeon HD5xxx filtering issue

    The point is: Without SGSSAA, you most-likely won't see it anymore, so in case you can live with AMDs filtering quality and don't play with SSAA very often, it probably isn't a reason anymore.
  6. K

    Radeon HD5xxx filtering issue

    Okay, let me get a little more precise on that matter: First, it's not clear whether or not the AFTester always determines the correct amount of samples. Now comes the a little bit more complicated reason: The analysis is (most likely) based on letting the algorithm sample a special texture for...
  7. K

    Radeon HD5xxx filtering issue

    Yes, but the fact that the banding still exists while NV can avoid it for years is embarrassing. It's not about whether it is visible or not, it's more about "you told us that you have fixed it while you haven't completely".
  8. K

    Radeon HD5xxx filtering issue

    Now comes the best part, guys! The banding is theoretically existant on Barts as well!!! You can reproduce it in the D3DFilterTester. The transition between filter levels (kernels) apparently only happens for higher levels. The lowest levels still show the issue, though not as strong as on...
  9. K

    Radeon HD5xxx filtering issue

    That's not true imo. They need to increase the sample rate before the shift to the next kernel (where the banding happens) instead of lowering the sample rate after the abrupt shift. If you compare both texture filters in videos with high res textures (not high frequency patterns!), you'll...
  10. K

    Radeon HD5xxx filtering issue

    That's basically what I've deduced from the Texel-Analysis shots. Different AF-levels of course use different filter kernels (otherwise, the AF-levels wouldn't be different), and there needs to be a transition between AF levels. This is more or less independent of the mipmaps. So I was right...
  11. K

    Radeon HD5xxx filtering issue

    Ah, okay, I see. Anyway, I'm interested to see in how far this is addressed in the upcoming reviews. I think AMD pursues the right strategy (for them). They try to convince us that, what was obligatory in the past, is now exclusive to the ones that buy new graphics cards. A bit like "oh let's...
  12. K

    Radeon HD5xxx filtering issue

    I highly doubt that this fix is back ported, because: - The AF behaviour is not entirely controlled by the driver, especially the adaptive AF algorithm. As AMD has confirmed (if the transparencies are correct), they have simply messed up the AF level transitions in the algorithm and that's what...
  13. K

    Radeon HD5xxx filtering issue

    If not faked, this seems to be the ultimate response from AMD to our issue: http://gathering.tweakers.net/forum/list_message/34877928#34877928
  14. K

    Radeon HD5xxx filtering issue

    The forum entry at beyond3d actually points directly at what I have noticed as well.
  15. K

    Radeon HD5xxx filtering issue

    Gathered some more footage which might bring a little more light into that case. I used the D3DAFTester for the following pictures and vids: http://www.3dcenter.org/download/d3d-af-tester You might wanna visit this site again for explanations: http://en.wikipedia.org/wiki/Anisotropic_filtering...