Comment 18 for bug 635523

commit 97cf53cc2ad7ecfdd495133bad31d0ec7d939326
Author: Søren Sandmann Pedersen <email address hidden>
Date: Mon Oct 21 16:58:54 2013 -0400

    ephyr: hostx_screen_init(): Fix bits_per_pixel and bytes_per_line

    When the depth of the Xephyr server matches that of the host X server,
    Xephyr simply uses the buffer associated with the XImage as its
    framebuffer. In this case, it is correct to get the bits_per_pixel and
    bytes_per_line values returned from hostx_screen_init() from the XImage.

    However, when the depth doesn't match the host, Xephyr uses a private
    framebuffer that is periodically copied to the XImage. In this case,
    the returned values of bits_per_pixel and bytes_per_line should be
    those of the private framebuffer, not those of the XImage.

    Reviewed-by: Eric Anholt <email address hidden>
    Signed-off-by: Soren Sandmann <email address hidden>
    Reviewed-by: Adam Jackson <email address hidden>