• Paul Berry's avatar
    util: Make a separate function to compare in-memory images. · e51de44e
    Paul Berry authored
    This patch splits off a new piglit-util function,
    piglit_compare_images_color(), from the existing
    piglit_probe_image_color() function.  The new function compares two
    images in memory, so that the caller can take responsibility for
    calling glReadPixels().
    In addition, this patch creates a function
    piglit_compute_probe_tolerance(), which detemines the correct
    tolerance thresholds to use when comparing images.
    These functions will be needed in order to test proper behaviour of
    MSAA with different buffer formats, since the MSAA format test needs
    to be able to read the rendered image using glReadPixels, make
    adjustments to it in memory, and then compare the results.
    Reviewed-by: Anuj Phogat's avatarAnuj Phogat <anuj.phogat@gmail.com>
piglit-util-gl.c 30.8 KB