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Thread: Fixed Point Maths or GLfloat ?

  1. #1
    Junior Member
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    Sep 2004
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    Hong Kong
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    Fixed Point Maths or GLfloat ?

    Hi all,

    I'am new in OpenGL and OpenGL ES.

    Should I use GLfloat in OpenGL ES? Will it slow down the program?..

    In fact, I search this topic in the internet. There are many papers say that Fixed Point Maths should be implemented in moblie devices. Is it true?

    Thanks for your help.

  2. #2
    Senior Member
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    Seattle, WA
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    Re: Fixed Point Maths or GLfloat ?

    If you can, yes, try to use fixed point math.
    At this point, most mobile devices based on ARM do not have a core that directly supports floating point math. Also, at least in the case of Vincent, the floating point layer is a wrapper around the fixed point kernel, so using fixed point reduces the level of indirection and hence increases the performance.

    - HM

  3. #3
    Junior Member
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    Sep 2004
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    Re: Fixed Point Maths or GLfloat ?

    Thanks ^^

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