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backends: Add some wiggle room for refresh rate comparisons

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We have not enough control over the sources of the refresh rate
float variable to make == comparisons reliable, add some room
when comparing these.

https://bugzilla.gnome.org/show_bug.cgi?id=787668
This commit is contained in:
Carlos Garnacho 2017-09-14 12:42:47 +02:00
parent 2bf7974076
commit 743e8cc249
1 changed files with 3 additions and 2 deletions
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5
src/backends/meta-monitor.c
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@ -32,6 +32,7 @@
#define MAXIMUM_SCALE_FACTOR 4.0f
#define MINIMUM_LOGICAL_WIDTH 800
#define MINIMUM_LOGICAL_HEIGHT 600
#define MAXIMUM_REFRESH_RATE_DIFF 0.001
#define HANDLED_CRTC_MODE_FLAGS (META_CRTC_MODE_FLAG_INTERLACE)
@ -1252,8 +1253,8 @@ meta_monitor_mode_spec_equals (MetaMonitorModeSpec *monitor_mode_spec,
{
return (monitor_mode_spec->width == other_monitor_mode_spec->width &&
monitor_mode_spec->height == other_monitor_mode_spec->height &&
(monitor_mode_spec->refresh_rate ==
other_monitor_mode_spec->refresh_rate) &&
ABS (monitor_mode_spec->refresh_rate -
other_monitor_mode_spec->refresh_rate) < MAXIMUM_REFRESH_RATE_DIFF &&
monitor_mode_spec->flags == other_monitor_mode_spec->flags);
}