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Thread: glReadPixels too slow

  1. #1
    Junior Member
    Join Date
    Aug 2011
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    1

    glReadPixels too slow

    Hi there,

    I'm trying to get frame buffer using glReadPixels, but it is too slow.
    1. For 720x480, the time is 50ms.
    2. For 1280x720, the time is 100ms.

    I use PBuffer to render "offscreen".

    Is there anyway to make glReadPixels faster?

    Thank's a lot.
    Fendy

  2. #2
    Junior Member
    Join Date
    Sep 2011
    Posts
    3

    Re: glReadPixels too slow

    Use Frame Buffer object
    you need to google next opengl commands: glGenFramebuffers, glFramebufferTexture2D

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