[Bug 793339] kmssink: Renders at half my display refresh rate
GStreamer (GNOME Bugzilla)
bugzilla at gnome.org
Fri Mar 9 20:17:21 UTC 2018
https://bugzilla.gnome.org/show_bug.cgi?id=793339
Devarsh Thakkar <devarsht at xilinx.com> changed:
What |Removed |Added
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CC| |devarsht at xilinx.com
--- Comment #1 from Devarsh Thakkar <devarsht at xilinx.com> ---
Created attachment 369527
--> https://bugzilla.gnome.org/attachment.cgi?id=369527&action=edit
Skip VSYNC wait for synchronous SetPlane call
The new atomic DRM driver implements synchronous
DRM_IOCTL_MODE_SETPLANE ioctl which unlike
legacy DRM driver blocks until a VSYNC is done.
As a workaround we skip the explicit wait for VSYNC done
using drmWaitVBlank and drmModePageFlip whenever
drmModeSetPlane is used by an atomic DRM driver, until
kmssink starts supporting fully atomic DRM drivers.
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