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Bug 1588907 [Wayland] Remove misleading comment about DMA_BUF_IOCTL_SYNC, r=jhorak

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Differential Revision: https://phabricator.services.mozilla.com/D49390

--HG--
extra : moz-landing-system : lando
This commit is contained in:
Martin Stransky 2019-10-17 10:38:12 +00:00
parent 5499b4744a
commit 6cbbed9b4e
1 changed files with 1 additions and 11 deletions
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12
widget/gtk/WaylandDMABufSurface.cpp
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@ -28,17 +28,7 @@
#include "mozilla/layers/LayersSurfaces.h"
/*
TODO
Lock/Unlock:
An important detail is that you *must* use DMA_BUF_IOCTL_SYNC to
bracket your actual CPU read/write sequences to the dmabuf. That ioctl
will ensure the appropriate caches are flushed correctly (you might not
notice anything wrong on x86, but on other hardware forgetting to do
that can randomly result in bad data), and I think it also waits for
implicit fences (e.g. if you had GPU write to the dmabuf earlier, to
ensure the operation finished).
TODO:
DRM device selection:
https://lists.freedesktop.org/archives/wayland-devel/2018-November/039660.html
*/