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Thread: Mip mapping question.

  1. #1
    Member Contributor
    Join Date
    Aug 2002

    Mip mapping question.

    When you use mippmapping. How much MORE space is used per texture? Like if im using a 512*512*32bit texture I am using just about 1.05mb of space on the card. How much more space is used if I Mip Map that image with opengl??

  2. #2
    Senior Member Regular Contributor
    Join Date
    Mar 2002
    Melbourne, Australia

    Re: Mip mapping question.

    as far as i understand, OpenGL (actually your 3d card) stores all copies of original texture down to 1x1..

    if so then the total memory required is:
    [sqr(512)+sqr(256)+sqr(12+...+sqr(4)+sqr(2)+sqr(1) ] * 32 bit = ~135% of non-mipmapped texture (more or less).......

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