Z3 re-visited

Discussion in 'General 3D Technology' started by Reverend, Mar 14, 2003.

  1. 3dcgi

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    I believe 3dlabs 16x Superscene antialiasing has an overflow buffer like you mention. They apparently don't keep track of full coverages masks to allow for sort-independent transparency though. If they did that feature would be advertised. I think one of the B3D articles made mention of this overflow buffer.
     
  2. arjan de lumens

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    The problem with such overflow buffers is, of course, that you have to dimension them for worst-case behaviour (=when maximum # of samples needed is reached for too many pixels) or else add the infrastructure needed to do the 'stall rendering->allocate/swap out memory->resume rendering' roundtrip whenever the overflow buffer overflows. If you do neither, you get unpredictable gliches during rendering.
     
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