(iOS Thread) Fix crash when returning from background

ios/RetroArch/RAGameView.m

@@ -105,6 +105,18 @@ static UIView* g_pause_indicator_view;
       ];
 }
 
+- (void)suspend
+{
+   g_view.context = nil;
+   [EAGLContext setCurrentContext:nil];
+}
+
+- (void)resume
+{
+   g_view.context = g_context;
+   [EAGLContext setCurrentContext:g_context];
+}
+
 @end
 
 bool ios_init_game_view()
@@ -169,7 +181,8 @@ void ios_get_game_view_size(unsigned *width, unsigned *height)
 void ios_bind_game_view_fbo()
 {
    dispatch_sync(dispatch_get_main_queue(), ^{
-      [g_view bindDrawable];   
+         if (g_context)
+            [g_view display];
    });
 }
 

ios/RetroArch/RetroArch_iOS.m

@@ -52,16 +52,6 @@ static void event_set_state_slot(void* userdata)
    g_extern.state_slot = (uint32_t)userdata;
 }
 
-static void event_init_drivers(void* userdata)
-{
-   init_drivers();
-}
-
-static void event_uninit_drivers(void* userdata)
-{
-   uninit_drivers();
-}
-
 static void event_reload_config(void* userdata)
 {
    // Need to clear these otherwise stale versions may be used!
@@ -114,14 +104,12 @@ static void event_reload_config(void* userdata)
 
 - (void)applicationWillEnterForeground:(UIApplication *)application
 {
-   if (_isRunning)
-      ios_frontend_post_event(&event_init_drivers, 0);
+   [RAGameView.get resume];
 }
 
 - (void)applicationDidEnterBackground:(UIApplication *)application
 {
-   if (_isRunning)
-      ios_frontend_post_event(&event_uninit_drivers, 0);
+   [RAGameView.get suspend];
 }
 
 // UINavigationControllerDelegate

ios/RetroArch/views.h

@@ -22,6 +22,9 @@
 + (RAGameView*)get;
 - (void)openPauseMenu;
 - (void)closePauseMenu;
+
+- (void)suspend;
+- (void)resume;
 @end
 
 @interface RALogView : UITableViewController