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Thread: HOWTO: making dynamic reflections w/ Pbuffer

  1. #1
    Junior Member Newbie
    Join Date
    Jan 2004
    Location
    Moskow, Russia
    Posts
    2

    HOWTO: making dynamic reflections w/ Pbuffer

    Good morning / afternoon / evening!

    I want to have a reflective surface in my scene, I've decided to use Pbuffer to make a reflection cube map.
    The problem is: I know how to create/bind/destroy pbuffer, but how to actually render a reflected surroundings to a cube map? And how to map this cube map to a surface to get a proper reflection?

  2. #2
    Super Moderator OpenGL Guru
    Join Date
    Feb 2000
    Location
    Montreal, Canada
    Posts
    4,256

    Re: HOWTO: making dynamic reflections w/ Pbuffer

    Read this
    http://oss.sgi.com/projects/ogl-samp...er_texture.txt

    If you already know about p-buffer, then extending them is easy to support RTT.
    ------------------------------
    Sig: http://glhlib.sourceforge.net
    an open source GLU replacement library. Much more modern than GLU.
    float matrix[16], inverse_matrix[16];
    glhLoadIdentityf2(matrix);
    glhTranslatef2(matrix, 0.0, 0.0, 5.0);
    glhRotateAboutXf2(matrix, angleInRadians);
    glhScalef2(matrix, 1.0, 1.0, -1.0);
    glhQuickInvertMatrixf2(matrix, inverse_matrix);
    glUniformMatrix4fv(uniformLocation1, 1, FALSE, matrix);
    glUniformMatrix4fv(uniformLocation2, 1, FALSE, inverse_matrix);

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