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[client] x11: invalidate the full window after timeout from expose

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Invalidating the entire window on an Expose event causes poor WM
performance when dragging the window around. Instead flag to redraw and
wait for the expose events to stop for 100ms before doing it.
This commit is contained in:
Geoffrey McRae 2021-08-08 08:49:46 +10:00
parent 12d256c7c8
commit 64da3465b8
2 changed files with 9 additions and 1 deletions
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9
client/displayservers/X11/x11.c
View file

@ -643,6 +643,13 @@ static int x11EventThread(void * unused)
while(app_isRunning())
{
const uint64_t lastWMEvent = atomic_load(&x11.lastWMEvent);
if (x11.invalidateAll && microtime() - lastWMEvent > 100000UL)
{
x11.invalidateAll = false;
app_invalidateWindow(true);
}
if (!XPending(x11.display))
{
FD_ZERO(&in_fds);
@ -710,7 +717,7 @@ static int x11EventThread(void * unused)
case Expose:
{
atomic_store(&x11.lastWMEvent, microtime());
app_invalidateWindow(false);
x11.invalidateAll = true;
break;
}

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

@ -41,6 +41,7 @@ struct X11DSState
XVisualInfo * visual;
_Atomic(uint64_t) lastWMEvent;
bool invalidateAll;
int xpresentOp;
bool jitRender;