jit.qt.grab uyvy quality and jit.gl processing


    Oct 15 2010 | 3:08 pm
    [EDIT: sorry I just realized this ended up in the max/msp forum, but I can figure out how to move it? moderator? help...pls]
    Hi, this relates to the following post, but is of a different topic: http://cycling74.com/forums/topic.php?id=28955
    What I am trying to do is to maintain highest quality throughout starting with the jit.qt.grab object, while creating the most efficient patch.
    So if i use jit.qt.grab @colormode uyvy, I end up with half vertical resolution which ends up looking pretty poor on fullscreen output, even on a videoplane and interpolated.
    If i use jit.qt.grab in argb colormode, and then use a cc.rgba2uyvy.jxs to convert to uyvy, I maintain the resolution, yet some of the compositing slab fail when the colormode is set to uyvy yet others work, so I am stumped.
    I could change the jit.qt.grab @colormode uyvy and @dim 1440 480 to oversample so effectively oversampling, and the quality looks good, but it looks like it really works the cpu hard.
    Am i over complicating things, or is there a bug in the colormode conversion slab, or what am i doing wrong? or am i best to stay in argb colormode for compositing and then convert to uyvy?
    the original patch is in the post above.
    thanks for any help in advance....
    matthew