fix syncContentData to be executed on ui thread

Examples/AdvancedEffects/ios/AdvancedEffects/Info.plist

@@ -22,6 +22,13 @@
 	<string>1</string>
 	<key>LSRequiresIPhoneOS</key>
 	<true/>
+	<key>NSAppTransportSecurity</key>
+	<dict>
+		<key>NSAllowsArbitraryLoads</key>
+		<true/>
+	</dict>
+	<key>NSLocationWhenInUseUsageDescription</key>
+	<string></string>
 	<key>UILaunchStoryboardName</key>
 	<string>LaunchScreen</string>
 	<key>UIRequiredDeviceCapabilities</key>
@@ -31,18 +38,8 @@
 	<key>UISupportedInterfaceOrientations</key>
 	<array>
 		<string>UIInterfaceOrientationPortrait</string>
-		<string>UIInterfaceOrientationLandscapeLeft</string>
-		<string>UIInterfaceOrientationLandscapeRight</string>
 	</array>
 	<key>UIViewControllerBasedStatusBarAppearance</key>
 	<false/>
-	<key>NSLocationWhenInUseUsageDescription</key>
-	<string></string>
-  <key>NSAppTransportSecurity</key>
-  <dict>
-    <!--See http://ste.vn/2015/06/10/configuring-app-transport-security-ios-9-osx-10-11/-->
-    <key>NSAllowsArbitraryLoads</key>
-    <true/>
-  </dict>
 </dict>
 </plist>

ios/GLCanvas.m

@@ -284,6 +284,7 @@ RCT_NOT_IMPLEMENTED(-init)
 
 - (void)syncContentData
 {
+  RCT_PROFILE_BEGIN_EVENT(0, @"GLCanvas syncContentData", nil);
   NSMutableArray *contentData = [[NSMutableArray alloc] init];
   int nb = [_nbContentTextures intValue];
   for (int i = 0; i < nb; i++) {
@@ -300,6 +301,9 @@ RCT_NOT_IMPLEMENTED(-init)
     contentData[i] = imgData;
   }
   _contentData = contentData;
+  _deferredRendering = true;
+  [self setNeedsDisplay];
+  RCT_PROFILE_END_EVENT(0, @"gl", nil);
 }
 
 
@@ -346,12 +350,7 @@ RCT_NOT_IMPLEMENTED(-init)
   
   BOOL needsDeferredRendering = _nbContentTextures > 0 && !_autoRedraw;
   if (needsDeferredRendering && !_deferredRendering) {
-    dispatch_async(dispatch_get_main_queue(), ^{
-      if (!weakSelf) return;
-      _deferredRendering = true;
-      [self syncContentData];
-      [weakSelf setNeedsDisplay];
-    });
+    [self performSelectorOnMainThread:@selector(syncContentData) withObject:nil waitUntilDone:NO];
   }
   else {
     RCT_PROFILE_BEGIN_EVENT(0, @"GLCanvas render", nil);