[cairo-bugs] [Bug 84396] cairo-tor-scan-converter is off by half of a subrow.

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=84396

--- Comment #24 from Chris Wilson <chris at chris-wilson.co.uk> ---
Better. Realised we could do_full_row if insert new edges at the beginning of
the fullrow (and have no other edge operations within the row), which fixed up
the issue with switching from subsampling to analytic within bug-seams and
simple-edges.

commit 950f1e7103a3b4f3405fbb3ee2844ed24b902834
Author: Chris Wilson <chris at chris-wilson.co.uk>
Date:   Thu Oct 2 07:52:05 2014 +0100

    tor: Enable analytic processing for starting rows

    If all the edges start at the very beginning of the whole row, we can
    merge them and include check for intersections/endings during the row.
    This allows us to enable fast analytic processing for even the very
    first row on pixel aligned vertices.

    Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk

Still the rasteriser is not symmetric though. :|

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