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[client] report presentation cadence over LGMP

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This commit is contained in:
Geoffrey McRae
2026-08-04 13:00:48 +10:00
parent 5626cfa55b
commit b23430b9a8
10 changed files with 335 additions and 0 deletions
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20
client/displayservers/X11/x11.c
View File

@@ -1487,6 +1487,15 @@ static void x11XPresentEvent(XGenericEventCookie *cookie)
case PresentCompleteNotify:
{
XPresentCompleteNotifyEvent * e = cookie->data;
const uint64_t previousMsc = atomic_load(&x11.presentMsc);
const uint64_t previousUst = atomic_load(&x11.presentUst);
if (previousMsc && e->msc > previousMsc && e->ust > previousUst)
{
const uint64_t period =
(e->ust - previousUst) * 1000 / (e->msc - previousMsc);
if (period)
atomic_store(&x11.presentPeriod, period);
}
x11DoPresent(e->msc);
atomic_store(&x11.presentMsc, e->msc);
atomic_store(&x11.presentUst, e->ust);
@@ -1496,6 +1505,16 @@ static void x11XPresentEvent(XGenericEventCookie *cookie)
}
}
static bool x11GetFramePeriod(uint64_t * period)
{
const uint64_t value = atomic_load(&x11.presentPeriod);
if (!value)
return false;
*period = value;
return true;
}
#ifdef ENABLE_EGL
static EGLDisplay x11GetEGLDisplay(void)
{
@@ -2025,6 +2044,7 @@ struct LG_DisplayServerOps LGDS_X11 =
#endif
.waitFrame = x11WaitFrame,
.stopWaitFrame = x11StopWaitFrame,
.getFramePeriod = x11GetFramePeriod,
.guestPointerUpdated = x11GuestPointerUpdated,
.setPointer = x11SetPointer,
.grabPointer = x11GrabPointer,

1
client/displayservers/X11/x11.h
View File

@@ -75,6 +75,7 @@ struct X11DSState
int xpresentOp;
bool jitRender;
_Atomic(uint64_t) presentMsc, presentUst;
_Atomic(uint64_t) presentPeriod;
uint32_t presentSerial;
Pixmap presentPixmap;
XserverRegion presentRegion;