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comp: Update nominal frame interval to match chosen mode in direct mdoe

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This value is used in xrWaitFrame() to throttle the application's rendering
down to the refresh rate of the HMD.
This commit is contained in:
Christoph Haag 2020-02-15 02:35:37 +01:00 committed by Lubosz Sarnecki
parent 36d6b71e8a
commit 6b8103f31b
1 changed files with 14 additions and 0 deletions
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14
src/xrt/compositor/main/comp_window_direct_mode.cpp
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@ -468,6 +468,20 @@ comp_window_direct_get_primary_display_mode(struct comp_window_direct *w,
props.parameters.visibleRegion.height,
(float)props.parameters.refreshRate / 1000.);
int64_t new_frame_interval =
1000. * 1000. * 1000. * 1000. / props.parameters.refreshRate;
COMP_DEBUG(w->base.c,
"Updating compositor settings nominal frame interval from "
"%lu (%f Hz) to %lu (%f Hz)",
w->base.c->settings.nominal_frame_interval_ns,
1000. * 1000. * 1000. /
(float)w->base.c->settings.nominal_frame_interval_ns,
new_frame_interval,
(float)props.parameters.refreshRate / 1000.);
w->base.c->settings.nominal_frame_interval_ns = new_frame_interval;
delete[] mode_properties;
return props.displayMode;