diff --git a/sfw/game_scene.cpp b/sfw/game_scene.cpp
index 2ac11bc..e2c917f 100644
--- a/sfw/game_scene.cpp
+++ b/sfw/game_scene.cpp
@@ -476,7 +476,7 @@ void GameScene::socket_thread_func(void *data) {
 		int a = self->_server_socket->accept(client_socket);
 
 		if (a != -1) {
-			printf("New connection! %d\n", a);
+			ERR_PRINT("New connection! " + itos(a));
 
 			client_sockets.push_back(client_socket);
 			client_socket = new Socket();
diff --git a/tools/merger/test_app/game_scene.cpp b/tools/merger/test_app/game_scene.cpp
index e3da781..f6b4a6d 100644
--- a/tools/merger/test_app/game_scene.cpp
+++ b/tools/merger/test_app/game_scene.cpp
@@ -1,6 +1,6 @@
 #include "game_scene.h"
 
-#include <cstdio>
+#include "sfw.h"
 
 void GameScene::input_event(const Ref<InputEvent> &event) {
 	//ERR_PRINT(event->as_text());
@@ -256,13 +256,42 @@ void GameScene::render() {
 		_mesh_utils_test_mi->render();
 	} else if (render_type == 12) {
 		render_immediate_3d();
+	} else if (render_type == 13) {
+		Renderer *r = Renderer::get_singleton();
+		r->set_face_culling(Renderer::FACE_CULLING_BACK);
+
+		Vector2i render_tex_size = _render_tex->get_size();
+
+		_frame_buffer->bind();
+		_frame_buffer->set_as_viewport();
+
+		r->camera_2d_projection_set_to_size(render_tex_size);
+		r->clear_screen(Color());
+
+		r->camera_3d_bind();
+		r->camera_3d_projection_set_to_perspective(_frame_buffer->get_aspect());
+
+		render_immediate_3d(false);
+
+		render_immediate(false);
+
+		_render_tex->update();
+		_frame_buffer->unbind();
+
+		_frame_buffer->reset_as_viewport();
+
+		r->camera_2d_projection_set_to_window();
+		r->clear_screen(Color(1, 0, 0));
+		r->draw_texture(_render_tex, Rect2(100, 100, render_tex_size.x, render_tex_size.y));
 	}
 }
-void GameScene::render_immediate() {
+void GameScene::render_immediate(bool clear_screen) {
 	Renderer *r = Renderer::get_singleton();
 
-	r->clear_screen(Color());
-	r->camera_2d_projection_set_to_window();
+	if (clear_screen) {
+		r->clear_screen(Color());
+		r->camera_2d_projection_set_to_window();
+	}
 
 	r->draw_point(Vector2(15, 15));
 	r->draw_point(Vector2(18, 18), Color(1, 1, 0));
@@ -338,14 +367,16 @@ void GameScene::render_obj() {
 	//TextRenderer::get_singleton()->font_print("test");
 }
 
-void GameScene::render_immediate_3d() {
+void GameScene::render_immediate_3d(bool clear_screen) {
 	Renderer *r = Renderer::get_singleton();
 
-	r->clear_screen(Color());
-	r->camera_2d_projection_set_to_window();
+	if (clear_screen) {
+		r->clear_screen(Color());
+		r->camera_2d_projection_set_to_window();
 
-	r->camera_3d_bind();
-	r->camera_3d_projection_set_to_perspective(AppWindow::get_singleton()->get_aspect());
+		r->camera_3d_bind();
+		r->camera_3d_projection_set_to_perspective(AppWindow::get_singleton()->get_aspect());
+	}
 
 	static float rotmi = 0;
 
@@ -433,7 +464,7 @@ void GameScene::socket_thread_func(void *data) {
 		int a = self->_server_socket->accept(client_socket);
 
 		if (a != -1) {
-			printf("New connection! %d\n", a);
+			ERR_PRINT("New connection! " + itos(a));
 
 			client_sockets.push_back(client_socket);
 			client_socket = new Socket();
@@ -665,6 +696,12 @@ GameScene::GameScene() {
 	_mesh_utils_test_mi = memnew(MeshInstance3D());
 	_mesh_utils_test_mi->material = color_material;
 	_mesh_utils_test_mi->mesh = _mesh_utils_test;
+
+	_frame_buffer.instance();
+	_frame_buffer->create(960, 540);
+
+	_render_tex.instance();
+	_render_tex->set_frame_buffer(_frame_buffer);
 }
 
 GameScene::~GameScene() {
diff --git a/tools/merger/test_app/game_scene.h b/tools/merger/test_app/game_scene.h
index 30437bf..aa008ec 100644
--- a/tools/merger/test_app/game_scene.h
+++ b/tools/merger/test_app/game_scene.h
@@ -11,15 +11,15 @@ class GameScene : public Scene {
 
 public:
 	enum RenderTypes {
-		RENDER_TYPE_MAX = 13
+		RENDER_TYPE_MAX = 14
 	};
 
 	virtual void input_event(const Ref<InputEvent> &event);
 	virtual void update(float delta);
 	virtual void render();
-	virtual void render_immediate();
+	virtual void render_immediate(bool clear_screen = true);
 	virtual void render_obj();
-	virtual void render_immediate_3d();
+	virtual void render_immediate_3d(bool clear_screen = true);
 
 	void toggle_thread();
 	static void test_thread_func(void *d);
@@ -70,6 +70,9 @@ public:
 	Ref<Mesh> _mesh_utils_test;
 	MeshInstance3D *_mesh_utils_test_mi;
 
+	Ref<FrameBuffer> _frame_buffer;
+	Ref<RenderTexture> _render_tex;
+
 	//ColoredMaterial *cmaterial;
 };