True 1920x1080 resolution

Discussion in 'Xbox Forums' started by SeeNoWeevil, Mar 7, 2006.

  1. SeeNoWeevil

    SeeNoWeevil
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    Some people are saying because some games have 1080i on the box like GRAW they infact render the game at a true 1920x1080 resolution and aren't infact 1280x720 scaled to 1080?

    This is false isn't it and all games are rendered internally at 720 and scaled/interlaced to 1080i if necessary?
     
  2. meansizzler

    meansizzler
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    All games are a minimum of 720P, it does not actually state the exact native res of the game on the back of the box, only the developers can tell you that, those that say "Just 720P" are 720P but those that say "480P/720P/1080i" could either be 720P or 1080i, but most likely will be 720P, not sure if there are any true 1080i games out there...
     
  3. Jazz Monkey Jr

    Jazz Monkey Jr
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    All games are rendered at 720 and are scaled accordingly by the 360.
     
  4. michaelT1888

    michaelT1888
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    This is only the case with component, with VGA you select which res. you want
     
  5. 5to1

    5to1
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    I believe the 360 still renders at 720p. It then upscales to the res you selected for output on the VGA interface.
     
  6. Spoonman2

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    Hmm not sure about that. Mind you.... I`m no expert :rolleyes:
     
  7. michaelT1888

    michaelT1888
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    With VGA, you can select your TVs native resolution, so there is no reason for it to scale anything, because it is set on what your TVs res. is anyway
     
  8. Spoonman2

    Spoonman2
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    Mine is set to 1020X768, and looks a darn sight better than 720p, as 768 is its native resolution.

    Spoony
     
  9. michaelT1888

    michaelT1888
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    thats an unusual res. for a TV to have, but you are spot on, if it is set at the TVs native res. then thats the best picture possible!!

    Are you sure your TV isnt 1280x768 or 1366x768? if so set it at one of these
     
  10. neil c

    neil c
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    The 360 is supposed to render at 720p, but apparently developers have already broken the promise MS made, e.g. PGR3, which alledgedly outputs at a lower res.

    There's no chance of developers using the 360 to render at 1920x1080 - they are already struggling with getting AA into games at 720p.
     
  11. Jazz Monkey Jr

    Jazz Monkey Jr
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    It is probably 1024 x 768
     
  12. Northerner76

    Northerner76
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    Thats true - the Xbox 360 graphics processor renders at 720p to an internal frame buffer, an auxiliary output circuit then scales as required - this allows custom resolutions via the VGA output. For a component output the 720p from the processor is not scaled further and simply squirted to the TV.

     
  13. oddfeld

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    720p is actually supposed to be better for gaming than 1080i, since 1080i is interlaced so you're only updating 540 lines per 60th of a second as opposed to 720 lines, so although a still image has fewer pixels, stuff that relies on a high framerate (games, sports broadcasts) look better on 720p because it has a better temporal resolution. 1080i exists as a spec really to offer easier upscaling of existing interlaced material.

    If you get a chance, you should check out one of Major Nelson's recent podcasts, where he interviews an engineer from M$ media studio about what the hell all these HD formats are anyway - it's show 163, 'the one about HDTV'.
     
  14. 5to1

    5to1
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    Not quite.

    You need to draw a distinction between rendering and scaling. And when and why the 360 does each.

    I believe the 360 renders at 720p. The resolution a console/PC will render to is limited by the power of the GPU, and the SW (game/drivers).

    If the rendered resolution does not match the native resolution of the display, scaling is applied (Or you get the black bars around the image, if you display a lower resolution then the display). Either the 360 or the display itself can scale the image.

    When a component cables is used, the 360 does no scaling (assuming you output 720p, not sure if it scales down for SD or renders at SD), it is left to the display.

    When a VGA cable is used, the 360 scales the image (to the selected resolution) before it is output to the display.

    Which will give the better picture is dependant on the display. In some cases the display may be better at scaling an image to its native resolution then the 360. In most i'm guessing the 360 would be better.
     
  15. Sick-Boy

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    Xbox 360 games are required to render internally to a 1280 x 720 frame buffer when HD output is selected as a minimum.

    It's highly unlikely that any developers will go render stuff at 1920 x 1080 because it's a massive performance hit for very little return, most people can't tell the difference between native 1080i and 720p scaled up.

    If you set your Xbox to 1080i it's the internal scaler that's doing the work


    Once your TV gets the signal from the Xbox it's going to have to scale that to whatever res your panel is.
     
  16. Jahan

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    yer 1080i is cheating if you ask me, a true 1920x1200 res is 1080p but thats another story, personally i prefer 720p over 1080i any day.
     

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