diff --git a/thermion_dart/lib/src/filament/src/material.dart b/thermion_dart/lib/src/filament/src/material.dart
index 375625f5..c67e82f6 100644
--- a/thermion_dart/lib/src/filament/src/material.dart
+++ b/thermion_dart/lib/src/filament/src/material.dart
@@ -111,6 +111,8 @@ abstract class MaterialInstance {
   Future setParameterFloat3Array(String name, List<Vector3> data);
   Future setParameterFloat4(
       String name, double x, double y, double z, double w);
+  Future setParameterMat4(
+      String name, Matrix4 matrix);
   
   Future setParameterInt(String name, int value);
   Future setParameterBool(String name, bool value);
diff --git a/thermion_dart/lib/src/utils/src/geometry.dart b/thermion_dart/lib/src/utils/src/geometry.dart
index 482e0970..2297f8fb 100644
--- a/thermion_dart/lib/src/utils/src/geometry.dart
+++ b/thermion_dart/lib/src/utils/src/geometry.dart
@@ -1,14 +1,12 @@
 import 'dart:math';
 import 'dart:typed_data';
 
-import 'package:vector_math/vector_math_64.dart';
-
 import '../../../thermion_dart.dart';
 
 class GeometryHelper {
   static Geometry fullscreenQuad() {
     final vertices = Float32List.fromList(
-        [-1.0, -1.0, 1.0, 1.0, 3.0, -1.0, 1.0, 1.0, -1.0, 3.0, 1.0, 1.0]);
+        [-1.0, -1.0, 1.0, 3.0, -1.0, 1.0, -1.0, 3.0, 1.0]);
     final indices = [0, 1, 2];
     return Geometry(vertices, indices);
   }
diff --git a/thermion_dart/lib/src/viewer/src/ffi/src/background_image.dart b/thermion_dart/lib/src/viewer/src/ffi/src/background_image.dart
index a4574428..2023091f 100644
--- a/thermion_dart/lib/src/viewer/src/ffi/src/background_image.dart
+++ b/thermion_dart/lib/src/viewer/src/ffi/src/background_image.dart
@@ -27,7 +27,7 @@ class BackgroundImage extends ThermionAsset {
 
   Future destroy() async {
     Scene_removeEntity(scene.scene, entity);
-    
+
     await texture!.dispose();
     await sampler!.dispose();
     await mi.destroy();
@@ -40,6 +40,9 @@ class BackgroundImage extends ThermionAsset {
 
     var backgroundImage =
         await viewer.createGeometry(GeometryHelper.fullscreenQuad());
+    await imageMaterialInstance.setParameterInt("showImage", 0);
+    await imageMaterialInstance.setParameterMat4("transform", Matrix4.identity());
+    
     backgroundImage.setMaterialInstanceAt(imageMaterialInstance);
     await scene.add(backgroundImage as FFIAsset);
     return BackgroundImage._(
@@ -61,7 +64,6 @@ class BackgroundImage extends ThermionAsset {
 
     await mi.setParameterTexture(
         "image", texture as FFITexture, sampler as FFITextureSampler);
-  
   }
 
   ///
diff --git a/thermion_dart/lib/src/viewer/src/ffi/src/callbacks.dart b/thermion_dart/lib/src/viewer/src/ffi/src/callbacks.dart
index 9ed40923..18a7ef77 100644
--- a/thermion_dart/lib/src/viewer/src/ffi/src/callbacks.dart
+++ b/thermion_dart/lib/src/viewer/src/ffi/src/callbacks.dart
@@ -13,6 +13,17 @@ void using(Pointer ptr, Future Function(Pointer ptr) function) async {
   allocator.free(ptr);
 }
 
+Future<void> withVoidCallback2(Function() func) async {
+  final completer = Completer();
+  void Function() callback = () {
+    func.call();
+    completer.complete();
+  };  
+  final nativeCallable = NativeCallable<Void Function()>.listener(callback);
+  await completer.future;
+  nativeCallable.close();
+}
+
 Future<void> withVoidCallback(
     Function(Pointer<NativeFunction<Void Function()>>) func) async {
   final completer = Completer();
@@ -27,8 +38,7 @@ Future<void> withVoidCallback(
 }
 
 Future<Pointer<T>> withPointerCallback<T extends NativeType>(
-    Function(Pointer<NativeFunction<Void Function(Pointer<T>)>>)
-        func) async {
+    Function(Pointer<NativeFunction<Void Function(Pointer<T>)>>) func) async {
   final completer = Completer<Pointer<T>>();
   // ignore: prefer_function_declarations_over_variables
   void Function(Pointer<NativeType>) callback = (Pointer<NativeType> ptr) {
@@ -101,4 +111,3 @@ Future<String> withCharPtrCallback(
   nativeCallable.close();
   return completer.future;
 }
-
diff --git a/thermion_dart/lib/src/viewer/src/ffi/src/ffi_filament_app.dart b/thermion_dart/lib/src/viewer/src/ffi/src/ffi_filament_app.dart
index c73c4195..286e9438 100644
--- a/thermion_dart/lib/src/viewer/src/ffi/src/ffi_filament_app.dart
+++ b/thermion_dart/lib/src/viewer/src/ffi/src/ffi_filament_app.dart
@@ -563,6 +563,13 @@ class FFIFilamentApp extends FilamentApp<Pointer> {
     await withBoolCallback((cb) {
       Renderer_beginFrameRenderThread(renderer, swapChain!.swapChain, 0, cb);
     });
+    await withVoidCallback((cb) {
+      Renderer_renderRenderThread(
+        renderer,
+        view.view,
+        cb,
+      );
+    });
     await withVoidCallback((cb) {
       Renderer_readPixelsRenderThread(
         renderer,
diff --git a/thermion_dart/lib/src/viewer/src/ffi/src/ffi_material.dart b/thermion_dart/lib/src/viewer/src/ffi/src/ffi_material.dart
index 4f240a9a..10a02aee 100644
--- a/thermion_dart/lib/src/viewer/src/ffi/src/ffi_material.dart
+++ b/thermion_dart/lib/src/viewer/src/ffi/src/ffi_material.dart
@@ -1,3 +1,4 @@
+import 'dart:async';
 import 'dart:typed_data';
 
 import 'package:thermion_dart/src/viewer/src/ffi/src/callbacks.dart';
@@ -192,4 +193,16 @@ class FFIMaterialInstance extends MaterialInstance {
     MaterialInstance_setParameterBool(
         pointer, name.toNativeUtf8().cast<Char>(), value);
   }
+
+  @override
+  Future setParameterMat4(String name, Matrix4 matrix) async {
+    final completer = Completer();
+    final func = () {
+      MaterialInstance_setParameterMat4(pointer, name.toNativeUtf8().cast<Char>(), matrix.storage.address);
+      completer.complete();
+    };
+    final nativeCallable = NativeCallable<Void Function()>.listener(func);
+    RenderLoop_addTask(nativeCallable.nativeFunction);
+    await completer.future;
+  }
 }
diff --git a/thermion_dart/lib/src/viewer/src/ffi/src/thermion_dart.g.dart b/thermion_dart/lib/src/viewer/src/ffi/src/thermion_dart.g.dart
index 2be08ff5..84d703cd 100644
--- a/thermion_dart/lib/src/viewer/src/ffi/src/thermion_dart.g.dart
+++ b/thermion_dart/lib/src/viewer/src/ffi/src/thermion_dart.g.dart
@@ -136,6 +136,15 @@ external void MaterialInstance_setParameterFloat4(
   double z,
 );
 
+@ffi.Native<
+    ffi.Void Function(ffi.Pointer<TMaterialInstance>, ffi.Pointer<ffi.Char>,
+        ffi.Pointer<ffi.Double>)>(isLeaf: true)
+external void MaterialInstance_setParameterMat4(
+  ffi.Pointer<TMaterialInstance> materialInstance,
+  ffi.Pointer<ffi.Char> propertyName,
+  ffi.Pointer<ffi.Double> matrix,
+);
+
 @ffi.Native<
     ffi.Void Function(ffi.Pointer<TMaterialInstance>, ffi.Pointer<ffi.Char>,
         ffi.Int)>(isLeaf: true)
@@ -1511,6 +1520,13 @@ external void RenderTicker_renderRenderThread(
   ffi.Pointer<ffi.NativeFunction<ffi.Void Function()>> onComplete,
 );
 
+@ffi.Native<
+    ffi.Void Function(
+        ffi.Pointer<ffi.NativeFunction<ffi.Void Function()>>)>(isLeaf: true)
+external void RenderLoop_addTask(
+  ffi.Pointer<ffi.NativeFunction<ffi.Void Function()>> task,
+);
+
 @ffi.Native<
     ffi.Void Function(
         ffi.Pointer<TEngine>,
diff --git a/thermion_dart/native/include/MathUtils.hpp b/thermion_dart/native/include/MathUtils.hpp
index 52c49d7f..8a870bc3 100644
--- a/thermion_dart/native/include/MathUtils.hpp
+++ b/thermion_dart/native/include/MathUtils.hpp
@@ -4,6 +4,16 @@
 
 namespace thermion {
 
+// Helper function to convert double* to filament::math::mat4f
+static filament::math::mat4f convert_double_to_mat4f(double* data)
+{
+    return filament::math::mat4f {
+        filament::math::float4{static_cast<float>(data[0]), static_cast<float>(data[1]), static_cast<float>(data[2]), static_cast<float>(data[3])},
+        filament::math::float4{static_cast<float>(data[4]), static_cast<float>(data[5]), static_cast<float>(data[6]), static_cast<float>(data[7])},
+        filament::math::float4{static_cast<float>(data[8]), static_cast<float>(data[9]), static_cast<float>(data[10]), static_cast<float>(data[11])},
+        filament::math::float4{static_cast<float>(data[12]), static_cast<float>(data[13]), static_cast<float>(data[14]), static_cast<float>(data[15])}};
+}
+
 // Helper function to convert filament::math::mat4 to double4x4
 static double4x4 convert_mat4_to_double4x4(const filament::math::mat4 &mat)
 {
diff --git a/thermion_dart/native/include/c_api/TMaterialInstance.h b/thermion_dart/native/include/c_api/TMaterialInstance.h
index 0ff40a61..f1351d7e 100644
--- a/thermion_dart/native/include/c_api/TMaterialInstance.h
+++ b/thermion_dart/native/include/c_api/TMaterialInstance.h
@@ -82,6 +82,7 @@ extern "C"
 	EMSCRIPTEN_KEEPALIVE void MaterialInstance_setParameterFloat3(TMaterialInstance *materialInstance, const char *propertyName, double x, double y, double z);
 	EMSCRIPTEN_KEEPALIVE void MaterialInstance_setParameterFloat3Array(TMaterialInstance *tMaterialInstance, const char *propertyName, double *raw, uint32_t length);
 	EMSCRIPTEN_KEEPALIVE void MaterialInstance_setParameterFloat4(TMaterialInstance *materialInstance, const char *propertyName, double x, double y, double w, double z);
+	EMSCRIPTEN_KEEPALIVE void MaterialInstance_setParameterMat4(TMaterialInstance *materialInstance, const char *propertyName, double *matrix);
 	EMSCRIPTEN_KEEPALIVE void MaterialInstance_setParameterInt(TMaterialInstance *materialInstance, const char *propertyName, int value);
 	EMSCRIPTEN_KEEPALIVE void MaterialInstance_setParameterBool(TMaterialInstance *materialInstance, const char *propertyName, bool value);
 	EMSCRIPTEN_KEEPALIVE void MaterialInstance_setParameterTexture(TMaterialInstance *materialInstance, const char *propertyName, TTexture *texture, TTextureSampler *sampler);
diff --git a/thermion_dart/native/include/c_api/ThermionDartRenderThreadApi.h b/thermion_dart/native/include/c_api/ThermionDartRenderThreadApi.h
index d5dfb0d2..afdd81aa 100644
--- a/thermion_dart/native/include/c_api/ThermionDartRenderThreadApi.h
+++ b/thermion_dart/native/include/c_api/ThermionDartRenderThreadApi.h
@@ -18,7 +18,7 @@ namespace thermion
         EMSCRIPTEN_KEEPALIVE void RenderLoop_destroy();
         EMSCRIPTEN_KEEPALIVE void RenderLoop_requestAnimationFrame(void (*onComplete)());
         EMSCRIPTEN_KEEPALIVE void RenderTicker_renderRenderThread(TRenderTicker *tRenderTicker, uint64_t frameTimeInNanos, void (*onComplete)());
-        // EMSCRIPTEN_KEEPALIVE void RenderLoop_addTask(TRenderLoop* tRenderLoop, void (*task)());
+        EMSCRIPTEN_KEEPALIVE void RenderLoop_addTask(void (*task)());
 
         EMSCRIPTEN_KEEPALIVE void AnimationManager_createRenderThread(TEngine *tEngine, TScene *tScene, void (*onComplete)(TAnimationManager *));
 
diff --git a/thermion_dart/native/src/c_api/TMaterialInstance.cpp b/thermion_dart/native/src/c_api/TMaterialInstance.cpp
index ea36ebd3..96689e36 100644
--- a/thermion_dart/native/src/c_api/TMaterialInstance.cpp
+++ b/thermion_dart/native/src/c_api/TMaterialInstance.cpp
@@ -8,7 +8,7 @@
 #include <math/vec2.h>
 
 #include "Log.hpp"
-
+#include "MathUtils.hpp"
 #include "material/image.h"
 #include "material/grid.h"
 
@@ -125,6 +125,11 @@ namespace thermion
         }
 
 
+        EMSCRIPTEN_KEEPALIVE void MaterialInstance_setParameterMat4(TMaterialInstance *tMaterialInstance, const char *propertyName, double *matrix) {
+            auto *mi = reinterpret_cast<filament::MaterialInstance *>(tMaterialInstance);
+            mi->setParameter(propertyName, convert_double_to_mat4f(matrix));
+        }
+
         EMSCRIPTEN_KEEPALIVE void MaterialInstance_setDepthFunc(TMaterialInstance *tMaterialInstance, TSamplerCompareFunc tDepthFunc)
         {
             auto *materialInstance = reinterpret_cast<::filament::MaterialInstance *>(tMaterialInstance);
diff --git a/thermion_dart/native/src/c_api/ThermionDartRenderThreadApi.cpp b/thermion_dart/native/src/c_api/ThermionDartRenderThreadApi.cpp
index 3ecaa434..c6eae607 100644
--- a/thermion_dart/native/src/c_api/ThermionDartRenderThreadApi.cpp
+++ b/thermion_dart/native/src/c_api/ThermionDartRenderThreadApi.cpp
@@ -50,6 +50,15 @@ extern "C"
     }
   }
 
+  EMSCRIPTEN_KEEPALIVE void RenderLoop_addTask(void (*task)()) {
+    std::packaged_task<void()> lambda(
+      [=]() mutable
+      {
+        task();
+      });
+    auto fut = _rl->add_task(lambda);
+  }
+
   EMSCRIPTEN_KEEPALIVE void RenderLoop_requestAnimationFrame(void (*onComplete)()) {
     _rl->requestFrame(onComplete);
   }