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Thread: Read back transformed vertices...

  1. #1
    Junior Member Newbie
    Join Date
    Feb 2004
    Posts
    3

    Read back transformed vertices...

    Hi All,

    I am wondering if there is a way in OpenGL to read back the coordinates of transformed vertices after specifying a set of transforms. I want to read back the vertices in world coordinate.

    -Daniel.

  2. #2
    Intern Contributor
    Join Date
    Feb 2004
    Posts
    98

    Re: Read back transformed vertices...

    No guarantees for speed, but you can use feedback mode. See the RedBook, Chapters on Selection and Feedback. I have used feedback mode to do off-line model format conversions.

  3. #3
    Junior Member Regular Contributor
    Join Date
    Apr 2002
    Posts
    114

    Re: Read back transformed vertices...

    Or if you use only fixed pipeline functions (I don't know about vertex shaders ) you can read the modelview matrix, and transform your vertices manually.

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