reduce background CPU use by using 12fps main loop

dweymouth · Nov 3, 2023 · 8725463 · 8725463
1 parent 1f96a69
commit 8725463
Show file tree

Hide file tree

Showing 2 changed files with 15 additions and 4 deletions.
diff --git a/internal/driver/glfw/loop.go b/internal/driver/glfw/loop.go
@@ -99,7 +99,7 @@ func (d *gLDriver) drawSingleFrame() {
 }
 
 func (d *gLDriver) runGL() {
-	eventTick := time.NewTicker(time.Second / 60)
+	//eventTick := time.NewTicker(time.Second / 60)
 
 	run.L.Lock()
 	run.flag = true
@@ -114,7 +114,7 @@ func (d *gLDriver) runGL() {
 	for {
 		select {
 		case <-d.done:
-			eventTick.Stop()
+			//eventTick.Stop()
 			d.drawDone <- nil // wait for draw thread to stop
 			d.Terminate()
 			fyne.CurrentApp().Lifecycle().(*app.Lifecycle).TriggerStopped()
@@ -124,8 +124,9 @@ func (d *gLDriver) runGL() {
 			if f.done != nil {
 				f.done <- struct{}{}
 			}
-		case <-eventTick.C:
-			d.tryPollEvents()
+		//case <-eventTick.C:
+		default:
+			d.tryWaitEventsTimeout(0.08333)
 			newWindows := []fyne.Window{}
 			reassign := false
 			for _, win := range d.windowList() {

diff --git a/internal/driver/glfw/loop_desktop.go b/internal/driver/glfw/loop_desktop.go
@@ -24,6 +24,16 @@ func (d *gLDriver) initGLFW() {
 	})
 }
 
+func (d *gLDriver) tryWaitEventsTimeout(timeoutSeconds float64) {
+	defer func() {
+		if r := recover(); r != nil {
+			fyne.LogError(fmt.Sprint("GLFW waitEvents error: ", r), nil)
+		}
+	}()
+
+	glfw.WaitEventsTimeout(timeoutSeconds)
+}
+
 func (d *gLDriver) tryPollEvents() {
 	defer func() {
 		if r := recover(); r != nil {