[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 #13 from Chris Wilson <chris at chris-wilson.co.uk> ---
Worked through the test suite, and I am happy with the results of the last
patch:

commit 03c3d4b7c159a3004071522bac2461e553fec211
Author: Chris Wilson <chris at chris-wilson.co.uk>
Date:   Tue Sep 30 08:44:43 2014 +0100

    tor: Fix loss of precision from projection onto sample grid

    The goal is to preserve the precision in the gradients of the edges and
    only apply the projection into the final cell location. We also include
    the half-subrow offset as spotted by Massimo.

    References: https://bugs.freedesktop.org/show_bug.cgi?id=84396
    Testcase: coverage-rhombus
    Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>

Now, it's time to answer the question of whether the flipped rendering is now
correct...

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