[Bug 70461] [sna suse] ddx assertion hits

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=70461

Chris Wilson <chris at chris-wilson.co.uk> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|REOPENED                    |RESOLVED
         Resolution|---                         |FIXED

--- Comment #78 from Chris Wilson <chris at chris-wilson.co.uk> ---
commit d08a5f555a0c47ae23c0f9a890b512cb23e74feb
Author: Chris Wilson <chris at chris-wilson.co.uk>
Date:   Fri Oct 24 09:53:29 2014 +0100

    sna/trapezoids: Prevent overflow of edge gradient in mono rasteriser

    References: https://bugs.freedesktop.org/show_bug.cgi?id=70461#c76
    Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>

commit f611f9580469661e585f419a7dd033ddffd7e20d
Author: Chris Wilson <chris at chris-wilson.co.uk>
Date:   Fri Oct 24 09:41:47 2014 +0100

    sna/trapezoids: Difference between two 32-bit quantities is 33-bits in size

    When computing the edge distance, we subtract on 32-bit quantity from
    another. This requires 33-bits to store the full result so promote the
    subtraction to 64-bits (rather than the result of that subtraction as
    done currently).

    Reported-by: Jiri Slaby <jirislaby at gmail.com>
    Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=70461#c76
    Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>

That should fix the assertion...

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