Mirrored_Repos/LookingGlass
1
0
Fork 0
mirror of https://github.com/gnif/LookingGlass.git synced 2024-11-10 08:38:20 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

[client] x11: prevent possible calibration underflow

Browse Source
This commit is contained in:
Geoffrey McRae 2021-08-05 07:11:23 +10:00
parent a37b527bbd
commit 0603a55492
1 changed files with 19 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

25
client/displayservers/X11/x11.c
View File

@ -1175,9 +1175,19 @@ static bool x11WaitFrame(void)
/* every skip we back off the delay */
if (deltamsc > 1)
{
delay -= 100;
calibrate = 1;
deltamsc = 0;
/* prevent underflow */
if (delay - 100 < delay)
{
delay -= 100;
calibrate = 1;
deltamsc = 0;
}
else
{
/* if underflow, we are simply too slow, no delay */
delay = 0;
calibrate = CALIBRATION_COUNT;
}
}
/* if we have finished, print out the delay */
@ -1191,11 +1201,14 @@ static bool x11WaitFrame(void)
lastmsc = msc;
/* minor adjustments if we are still seeing odd skips */
if (deltamsc > 1)
if (deltamsc > 1 && delay - 10 < delay)
delay -= 10;
struct timespec ts = { .tv_nsec = delay * 1000 };
while(nanosleep(&ts, &ts)) {};
if (delay)
{
struct timespec ts = { .tv_nsec = delay * 1000 };
while(nanosleep(&ts, &ts)) {};
}
/* force rendering until we have finished calibration so we can take into
* account how long it takes for the scene to render */