[Wayland-bugs] [Bug 46451] screenshot doesn't work on weston in drm backend

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=46451

--- Comment #5 from Shuang He <shuang.he at intel.com> 2012-04-18 22:35:44 PDT ---
(In reply to comment #4)
> >
> > --- Comment #3 from ZhaoShengyan <shengyanx.zhao at intel.com> 2012-04-18
> > 22:01:10 PDT ---
> > It can't be reproduced with:
> >
> Did you mean "can" be reproduced with?
> >
> > Arch: i386
> > Libdrm: (master) 2.4.33-12-g292da616fe1f936ca78a3fa8e1b1b19883e343b6
> > Wayland: (master)677c5180e67be18b7a0867fafb7f205b57a6e9ff
> > Mesa: (master)35f2fb70d3826df70fa2f53af05339137cddefc8
> > Xserver:
> > (master)xorg-server-1.12.0-66-g80fefc42f5e67e6b4a4b440d8991bee7e5f38359
> > Xf86_video_intel:
> > (master)2.18.0-212-gaf4a6e8cb52ace594934446e6d8a7aaa1945a9b0
> > Cairo: (master)4f125a1bd069095f3a97f009e7d7af2681353fb1
> > Cairo_gl: (master)4f125a1bd069095f3a97f009e7d7af2681353fb1
> > Xkbcommon: (master)3d672fcfea6b823db4793b9ad1c3aadc4b547a08
> > Weston: (master)e4faa2ab051aca454f3952f458dac42491e54954
> > Kernel_unstable:
> > (drm-intel-next-queued)fc6826d1dcd65f3d1e9a5377678882e4e08f02be
> >
> >
> The reason screenshot is buggy is because it shoots the back buffer at a
> time when it's contents
> are not guaranteed. It needs a bit of rework to read the pixels at the
> right time - after the scene
> is rendered to the back buffer, right before swapping buffers.

So you mean, it's not fixed yet. We need to run many times of screenshot,and
some of them may not be correct.

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