XBox2 specs (including graphics part) on Xbit

Discussion in 'Architecture and Products' started by Rys, Apr 26, 2004.

  1. Megadrive1988

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    this is interesting

    http://www.gamesindustry.biz/content_page.php?section_name=dev&aid=3364

     
  2. psurge

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    JohnH, aaronspink -

    Given the fact that 10MB of edram gives you a pretty giant tile size (even with high levels of AA), is it unreasonable to simply design for good performance under the assumption that the software will more or less take care of tiling for the hardware (since this is a system that will be targeted directly)?

    I was thinking along the lines of basically splitting the screen into say 4x4 "mega-tiles". You could then specify to the EDRAM block a mega-tile which is guaranteed to be held on chip, perhaps uncompressed. Left-over space would be filled by fragments falling outside of the current mega-tile, and could be compressed/spilled to main memory as necessary.

    Performance would suck if a developer didn't take the time to split (for example) giant screen aligned quads across the bigger tiles, but on such a fixed platform I think its a given that developers will avoid the things that really kill performance.

    Regards,
    Serge Monkewitz
     
  3. psurge

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    Edit: double post
     
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