[cairo-bugs] [Bug 73580] cairo-perf-trace failure

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=73580

--- Comment #17 from Emanuele Aina <emanuele.aina at collabora.com> ---
> If possible, I would also try to find out (and document in a comment) why _emit_surface_op() should not be used in similar/similar-image.

I honestly don't know, _emit_surface_op() calls into _emit_current() (by way of
_emit_surface()) which seems to be willing to roll the stack up to the
requested surface instead of using indexed addressing or even 'dup'.

I'm not sufficiently intimate with the cairo interpreter stack machine to
understand the two behaviours, but they seem quite different. :/

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