ARM Midgard Architecture

Discussion in 'Mobile Graphics Architectures and IP' started by arjan de lumens, Nov 10, 2010.

  1. Nebuchadnezzar

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    With the tesselation talk going on in the other threads, I find this statement from ARM interesting (kudos to ltcommander.data for bringing it up in the Q&A):

     
  2. Ailuros

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    So they're doing it in software or how should I understand that?
     
  3. Ailuros

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    Some more interesting comments from Jem Davies at Anandtech:

    http://www.anandtech.com/show/8226/ask-the-experts-arm-fellow-jem-davies-answers-your-gpu-questions

    In fact the whole Q & A with users and Jem Davies is a highly interesting read.

    So T760 is feature_level DX11.1 after all, but doesn't have a ff tessellation unit; so they're probably not using a sw solution but the Midgaard programmable parts of the hw ie the ALUs?
     
  4. jedibeeftrix

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    they were my questions:
    Q - Mali 7xx series - full DX11 compliance or not?
    Q - Did Khronos drop the ball on progressing OpenGL ES and force Google to release the "extension pack"?
     
    #204 jedibeeftrix, Jul 3, 2014
    Last edited by a moderator: Jul 3, 2014
  5. Ailuros

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    Good job on those; the good thing is that he's doing an excellent job despite that users have bombarded him with questions :)
     
  6. jedibeeftrix

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    yes, he's answered a lot of questions, many of which are overlapping and we'd be tempted to skip.
     
  7. ToTTenTranz

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  8. Ailuros

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    I looove it when IHVs come out in the open - at least a bit - about their architectures.

    So T7xx is using after all its ALUs for generation geometry for tessellation. I understand their point why they skipped the ff tessellation unit, but I don't really know how efficienct the architecture is with geometry either.

    Both the T628MP6 as the T760MP4 in the GLB2.7 (rather simple) geometry tests seem to fair quite well but that's all I know.
     
  9. Nebuchadnezzar

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    https://translate.googleusercontent...v.html&usg=ALkJrhiU79zY77Y5GJM06FERGlP9teEraQ

    15fps Manhattan offscreen
    22.9fps TRex offscreen

    T760 scores from the 5433. Still don't know what core arrangement it is.

    Looking at the MP4 scores from the Rockchip SoC you could deduce it to be an MP6 going by the Manhattan scores alone: https://gfxbench.com/device.jsp?benchmark=gfx30&D=Rockchip+rk3288&testgroup=overall. The fillrate also sort of points out to MP6.

    The TRex scores are very low for some reason.

    Edit: Korean sources report 17.2fps and 37.6fps. Very comparable to the Adreno 420.

    http://i.imgur.com/icXZVlj.png
     
    #209 Nebuchadnezzar, Sep 26, 2014
    Last edited by a moderator: Sep 29, 2014
  10. Ailuros

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    Could be a MP6 at equal or higher frequency to the RK3288.
     
  11. Erinyes

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    Those are some pretty good results and if the power efficiency claims hold true, then T760 could be as popular as Mali-400/450 were.

    Waiting for some performance results from the Mediatek MT6732..I expect it has a T760 MP2 configuration.
     
  12. Ailuros

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    I don't think Midgaard cores have as low die area as the Mali 4xx configs had. Other than that if that's truly a MP6 at 650 or even 700MHz yielding a bit over 17 fps in Manhattan, Apple gets roughly 10% more performance with a tad over 500MHz (estimated) from a 4 cluster config.

    Unfortunately we have neither any die area or power indications for any of the 760 variants, but if there's nothing wrong with results like that: http://gfxbench.com/device.jsp?benc...i=gl&D=Samsung SM-G900x Galaxy S5 (Mali-T628)

    it's predecessor throttled a helluva lot.
     
  13. Lodix

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    I will be a bit disappointed if the Mali T760 configuration in Note 4 is behind the Adreno 420.
     
  14. Ailuros

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  15. Nebuchadnezzar

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    That's the same breakdown I posted in June, you even commented on it...
     
  16. mboeller

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    Really? Sorry then; they posted it as "new" at gizmochina.
     
  17. Nebuchadnezzar

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  18. Ailuros

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  19. wishiknew

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    Looks like they announced some new stuff today.
     
  20. xpea

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