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Thread: texture question

  1. 01-18-2013, 03:15 PM #1
    hayden
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    texture question

    I have mapped texture on a 2D polygon. Is it possible to get the RGB values of a particular point in the polygon.
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  2. 01-18-2013, 04:34 PM #2
    tonyo_au
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    Only by reading from the frame buffer. There are several ways of doing this one is to use glReadPixels
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  3. 01-21-2013, 08:39 PM #3
    hayden
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    I find difficulty in using glReadPixels. Could you give some sample code?
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  4. 01-22-2013, 04:15 AM #4
    tonyo_au
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    try
    http://ogldev.atspace.co.uk/www/tuto...utorial29.html

    This site has a lot of good tutorials
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