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Thread: Save cubemap to file

  1. #1
    Newbie Newbie
    Join Date
    Apr 2013
    Posts
    2

    Save cubemap to file

    Hi,
    whats an easy and uncomplicated way to save a cubemap which has been rendered into a framebufferobject into a file (e.g. 6 separate pngs, one for each side)?
    I have a fbo with a cubemap attached and filled all six textures (GL_TEXTURE_CUBE_MAP_POSITIVE_X, ...).

    Thanks

  2. #2
    Super Moderator OpenGL Guru
    Join Date
    Feb 2000
    Location
    Montreal, Canada
    Posts
    4,264
    If you want to use the png format, people tend to use libpng or a higher level library that uses libpng under the hood.
    Links for such libraries are here
    http://www.opengl.org/wiki/Image_Libraries

    If you want to save as a single file, look into the DDS format. DevIL supports DDS.
    ------------------------------
    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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