Limit GUI redraw rate

applications/gui2/src/main.cpp

@@ -106,7 +106,7 @@ void FTLGui::mainloop() {
 	screen_->setVisible(true);
 	screen_->drawAll();
 
-	//float last_draw_time = 0.0f;
+	float last_draw_time = 0.0f;
 
 	while (ftl::running) {
 		if (!screen_->visible()) {
@@ -117,8 +117,8 @@ void FTLGui::mainloop() {
 			ftl::running = false;
 		}
 		else {
-			//float now = float(glfwGetTime());
-			//float delta = now - last_draw_time;
+			float now = float(glfwGetTime());
+			float delta = now - last_draw_time;
 
 			// Generate poses and render and virtual frame here
 			// at full FPS (25 without VR and 90 with VR currently)
@@ -127,10 +127,10 @@ void FTLGui::mainloop() {
 			io_->feed()->render();
 
 			// Only draw the GUI at 25fps
-			//if (delta >= 0.04f) {
-			//	last_draw_time = now;
+			if (delta >= 0.04f) {
+				last_draw_time = now;
 				screen_->drawAll();
-			//}
+			}
 		}
 
 		// Wait for mouse/keyboard or empty refresh events