fix resizing

example/lib/main.dart

@@ -362,17 +362,16 @@ class _ExampleWidgetState extends State<ExampleWidget> {
             _item(value: 32, child: Text('set camera model matrix')),
           ])),
       Container(
-          width: _vertical ? 200 : 400,
-          height: _vertical ? 400 : 200,
-          alignment: Alignment.center,
-          child: SizedBox(
-            child: FilamentGestureDetector(
-                showControlOverlay: true,
-                controller: _filamentController,
-                child: FilamentWidget(
-                  controller: _filamentController,
-                )),
-          )),
+        width: _vertical ? 200 : 400,
+        height: _vertical ? 400 : 200,
+        alignment: Alignment.center,
+        child: FilamentGestureDetector(
+            showControlOverlay: true,
+            controller: _filamentController,
+            child: FilamentWidget(
+              controller: _filamentController,
+            )),
+      ),
     ]);
   }
 }

ios/Classes/SwiftPolyvoxFilamentPlugin.swift

@@ -187,10 +187,15 @@ public class SwiftPolyvoxFilamentPlugin: NSObject, FlutterPlugin, FlutterTexture
             createPixelBuffer(width:Int(args[0]), height:Int(args[1]))
             createDisplayLink()
             result(self.flutterTextureId)
-        case "getResourceLoader":
-            let callback = make_resource_loader(loadResource, freeResource,  Unmanaged.passUnretained(self).toOpaque())
-            result(unsafeBitCast(callback,  to:Int64.self))
         case "resize":
+            rendering = false
+            destroy_swap_chain(viewer)
+            let args = call.arguments as! [Any]
+            resize(width:args[0] as! Int32, height:args[1] as! Int32)
+            var pixelBufferTextureId = unsafeBitCast(pixelBuffer!, to: UnsafeRawPointer.self)
+            create_swap_chain(viewer, pixelBufferTextureId, UInt32(args[0] as! Int64), UInt32(args[1] as! Int64))
+            update_viewport_and_camera_projection(viewer, Int32(args[0] as! Int64), Int32(args[1] as! Int64), Float(args[2] as! Double))
+            rendering = true
             result(self.flutterTextureId);
         case "createFilamentViewer":
             let callback = make_resource_loader(loadResource, freeResource,  Unmanaged.passUnretained(self).toOpaque())
@@ -208,10 +213,6 @@ public class SwiftPolyvoxFilamentPlugin: NSObject, FlutterPlugin, FlutterTexture
         case "getAssetManager":
             let assetManager = get_asset_manager(viewer)
             result(unsafeBitCast(assetManager, to:Int64.self))
-        case "createRenderTarget":
-            let args = call.arguments as! [Any]
-            create_render_target(viewer, args[0] as! UInt32, args[1] as! UInt32, args[2] as! UInt32)
-            result(true)
         case "clearBackgroundImage":
             clear_background_image(viewer)
             result(true)

lib/filament_controller.dart

@@ -97,21 +97,9 @@ class FilamentController {
 
   Future resize(int width, int height,
       {double contentScaleFactor = 1.0}) async {
-    // await setRendering(false);
-    // _textureIdController.add(null);
-    // await _channel.invokeMethod("destroy_swap_chain(_viewer);
-    // size = ui.Size(width * _pixelRatio, height * _pixelRatio);
-
-    // _textureId = await _channel.invokeMethod("resize",
-    //     [width * _pixelRatio, height * _pixelRatio, contentScaleFactor]);
-
-    // _textureIdController.add(_textureId);
-    // await _channel.invokeMethod("create_swap_chain( nullptr, width, height);
-    // await _channel.invokeMethod("create_render_target(
-    //      await _channel.invokeMethod("getGlTextureId"), width, height);
-    // await _channel.invokeMethod("update_viewport_and_camera_projection(
-    //      width, height, contentScaleFactor);
-    // await setRendering(true);
+    _textureId = await _channel.invokeMethod("resize",
+        [width * _pixelRatio, height * _pixelRatio, contentScaleFactor]);
+    _textureIdController.add(_textureId);
   }
 
   void clearBackgroundImage() async {

lib/filament_widget.dart

@@ -103,14 +103,19 @@ class _FilamentWidgetState extends State<FilamentWidget> {
                   width: constraints.maxWidth,
                   child: ResizeObserver(
                       onResized: (Size oldSize, Size newSize) async {
-                        // setState(() {
-                        //   _resizing = true;
-                        // });
+                        WidgetsBinding.instance.addPostFrameCallback((_) async {
+                          setState(() {
+                            _resizing = true;
+                          });
 
-                        await widget.controller.resize(
-                            newSize.width.toInt(), newSize.height.toInt());
-                        setState(() {
-                          _resizing = false;
+                          await widget.controller.resize(
+                              newSize.width.toInt(), newSize.height.toInt());
+                          WidgetsBinding.instance
+                              .addPostFrameCallback((_) async {
+                            setState(() {
+                              _resizing = false;
+                            });
+                          });
                         });
                       },
                       child: Platform.isLinux