diff --git a/data/layout.xml b/data/layout.xml
index 41e58d2..da48052 100644
--- a/data/layout.xml
+++ b/data/layout.xml
@@ -1483,6 +1483,9 @@ Here's a list of what's available in this release.
       <button-custom id="file-submenu-export-layers" height="40" align="center" color=".2" pad="0 0 0 10" dir="row">
         <text text="Separate Layers" grow="1" margin="0 0 0 5"/>
       </button-custom>
+      <button-custom id="file-submenu-export-cube" height="40" align="center" color=".2" pad="0 0 0 10" dir="row">
+        <text text="Cube Faces" grow="1" margin="0 0 0 5"/>
+      </button-custom>
       <button-custom id="file-submenu-export-depth" height="40" align="center" color=".2" pad="0 0 0 10" dir="row">
         <text text="3D View + Depth" grow="1" margin="0 0 0 5"/>
       </button-custom>
diff --git a/src/app.cpp b/src/app.cpp
index 596ece9..15cc3d9 100644
--- a/src/app.cpp
+++ b/src/app.cpp
@@ -495,7 +495,7 @@ bool App::update_ui_observer(Node *n)
             n->handle_on_screen(false, true);
             n->m_on_screen = true;
         }
-        glm::ivec4 c = glm::vec4(box.x, (height / zoom - box.y - box.w), box.z, box.w) * zoom;
+        glm::ivec4 c = glm::vec4(box.x - 1, (height / zoom - box.y - box.w - 1), box.z + 2, box.w + 2) * zoom;
         glScissor(floorf(c.x + off_x), floorf(c.y + off_y), ceilf(c.z), ceilf(c.w));
         n->draw();
         return true;
@@ -532,7 +532,7 @@ void App::draw(float dt)
         glBindFramebuffer(GL_FRAMEBUFFER, 0);
 #endif
         glViewport(off_x, off_y, (GLsizei)width, (GLsizei)height);
-        //glEnable(GL_SCISSOR_TEST);
+        glEnable(GL_SCISSOR_TEST);
         for (int i = 0; i < layout[main_id]->m_children.size(); i++)
             layout[main_id]->m_children[i]->watch(observer);
         //msgbox->watch(observer);
diff --git a/src/app.h b/src/app.h
index 2a5f967..c06dd70 100644
--- a/src/app.h
+++ b/src/app.h
@@ -205,7 +205,7 @@ public:
     bool key_char(char key);
     void toggle_ui();
     void set_stylus();
-    NodeMessageBox* message_box(const std::string& title, const std::string& text, bool cancel_button = false);
+    std::shared_ptr<NodeMessageBox> message_box(const std::string& title, const std::string& text, bool cancel_button = false);
 
     void rec_clear();
     void rec_loop();
@@ -232,7 +232,7 @@ public:
     void dialog_export(std::string ext);
     void dialog_export_layers();
     void dialog_export_depth();
-	void dialog_export_cubes();
+	void dialog_export_cube_faces();
     void dialog_layer_rename();
     void dialog_resize();
 
@@ -243,7 +243,7 @@ public:
     void download(std::string url, std::string dest_filepath, std::function<void(float)> progress = nullptr);
     bool check_license();
     
-    std::shared_ptr<NodeProgressBar> show_progress(const std::string& title);
+    std::shared_ptr<NodeProgressBar> show_progress(const std::string& title, int total = 0);
 
     void brush_update(bool update_color, bool update_brush);
     void title_update();
@@ -284,8 +284,8 @@ public:
 
     // don't capture a reference to this ptr as the object may be destroyed
     // by the time the task is executed
-    template<typename T, typename R = void>
-    std::future<R> render_task_async(T task, bool unique = false)
+    template<typename T>
+    std::future<void> render_task_async(T task, bool unique = false)
     {
         AppTask pt(task);
         auto f = pt.get_future();
@@ -308,8 +308,8 @@ public:
         return f;
     }
 
-    template<typename T, typename R = void>
-    R render_task(T task)
+    template<typename T>
+    void render_task(T task)
     {
         AppTask pt(task);
         auto f = pt.get_future();
@@ -325,7 +325,8 @@ public:
             }
             render_cv.notify_all();
         }
-        return render_running ? f.get() : R();
+        if (render_running)
+            f.get();
     }
 
     void render_sync()
@@ -354,8 +355,8 @@ public:
 
     // don't capture a reference to this ptr as the object may be destroyed
     // by the time the task is executed
-    template<typename T, typename R = void>
-    std::future<R> ui_task_async(T task, bool unique = false)
+    template<typename T>
+    std::future<void> ui_task_async(T task, bool unique = false)
     {
         AppTask pt(task);
         auto f = pt.get_future();
@@ -378,8 +379,8 @@ public:
         return f;
     }
 
-    template<typename T, typename R = void>
-    R ui_task(T task)
+    template<typename T>
+    void ui_task(T task)
     {
         AppTask pt(task);
         auto f = pt.get_future();
@@ -395,7 +396,9 @@ public:
             }
             ui_cv.notify_all();
         }
-        return ui_running ? f.get() : R();
+        if (ui_running)
+            f.get();
+        redraw = true;
     }
 
     void ui_sync()
diff --git a/src/app_cloud.cpp b/src/app_cloud.cpp
index aadf262..d79e45c 100644
--- a/src/app_cloud.cpp
+++ b/src/app_cloud.cpp
@@ -31,7 +31,7 @@ void App::cloud_upload()
             auto pb = show_progress("Uploading");
 
             upload(doc_path, doc_filename, [this,pb](float p){
-                pb->m_progress->SetWidthP(p * 100.f);
+                pb->set_progress(p);
             });
             
             pb->destroy();
@@ -70,32 +70,20 @@ void App::cloud_upload_all()
         gl_state gl;
         std::shared_ptr<NodeProgressBar> pb;
         if (layout.m_loaded)
-        {
-            pb = show_progress("Export Pano Image");
-        }
-
-        int progress = 0;
-        int total = (int)names.size();
+            pb = show_progress("Export Pano Image", names.size());
 
         for (const auto& n : names)
         {
             std::string path = data_path + "/" + n;
             upload(path);
 
-            progress++;
-            float p = (float)progress / total * 100.f;
-            LOG("progress: %f", p);
-
             if (layout.m_loaded)
-            {
-                pb->m_progress->SetWidthP(p);
-            }
+                pb->increment();
         }
 
         if (layout.m_loaded)
-        {
             pb->destroy();
-        }
+
     }).detach();
 }
 
diff --git a/src/app_dialogs.cpp b/src/app_dialogs.cpp
index def5f1a..acb70f9 100644
--- a/src/app_dialogs.cpp
+++ b/src/app_dialogs.cpp
@@ -13,7 +13,7 @@
 #include "oculus_vr.h"
 #endif
 
-std::shared_ptr<NodeProgressBar> App::show_progress(const std::string& title)
+std::shared_ptr<NodeProgressBar> App::show_progress(const std::string& title, int total /*= 0*/)
 {
     auto pb = std::make_shared<NodeProgressBar>();
     pb->m_manager = &layout;
@@ -22,18 +22,25 @@ std::shared_ptr<NodeProgressBar> App::show_progress(const std::string& title)
     pb->loaded();
     pb->m_progress->SetWidthP(0);
     pb->m_title->set_text(title.c_str());
+    pb->m_total = total;
+    pb->m_count = 0;
     layout[main_id]->add_child(pb);
     return pb;
 }
 
-NodeMessageBox* App::message_box(const std::string &title, const std::string& text, bool cancel_button)
+std::shared_ptr<NodeMessageBox> App::message_box(const std::string &title, const std::string& text, bool cancel_button)
 {
-    auto* m = layout[main_id]->add_child<NodeMessageBox>();
+    auto m = std::make_shared<NodeMessageBox>();
+    m->m_manager = &layout;
+    m->init();
+    m->create();
+    m->loaded();
     m->m_title->set_text(title.c_str());
     m->m_message->set_text(text.c_str());
     m->btn_ok->m_text->set_text("Ok");
     if (!cancel_button)
         m->btn_cancel->destroy();
+    layout[main_id]->add_child(m);
     return m;
 }
 
@@ -501,12 +508,20 @@ void App::dialog_resize()
     };
 }
 
-void App::dialog_export_cubes()
+void App::dialog_export_cube_faces()
 {
 	if (canvas)
 	{
-		canvas->m_canvas->export_cubes();
-	}
+        canvas->m_canvas->export_cube_faces(doc_name, [this] {
+#if defined(__IOS__)
+            message_box("Export Cube Faces", "Image and depth exported to Files/PanoPainter");
+#elif defined(__OSX__)
+            message_box("Export Cube Faces", "Image and depth exported to Pictures/PanoPainter folder");
+#elif defined(_WIN32)
+            message_box("Export Cube Faces", "Image and depth exported to " + work_path);
+#endif
+        });
+    }
 }
 
 void App::dialog_layer_rename()
diff --git a/src/app_layout.cpp b/src/app_layout.cpp
index 4e43ad5..48c5a76 100644
--- a/src/app_layout.cpp
+++ b/src/app_layout.cpp
@@ -636,6 +636,13 @@ void App::init_menu_file()
                         popup->mouse_release();
                         popup->destroy();
                     };
+                    subpopup->find<NodeButtonCustom>("file-submenu-export-cube")->on_click = [this, subpopup, popup](Node*) {
+                        dialog_export_cube_faces();
+                        subpopup->mouse_release();
+                        subpopup->destroy();
+                        popup->mouse_release();
+                        popup->destroy();
+                    };
                     subpopup->find<NodeButtonCustom>("file-submenu-export-depth")->on_click = [this, subpopup, popup](Node*) {
                         dialog_export_depth();
                         subpopup->mouse_release();
@@ -656,13 +663,7 @@ void App::init_menu_file()
                     popup->mouse_release();
                     popup->destroy();
                 };
-			if (auto b = popup->find<NodeButtonCustom>("file-export-cubes"))
-                b->on_click = [this, popup](Node*) {
-                    dialog_export_cubes();
-                    popup->mouse_release();
-                    popup->destroy();
-                };
-			if (auto b = popup->find<NodeButtonCustom>("file-cloud-upload"))
+            if (auto b = popup->find<NodeButtonCustom>("file-cloud-upload"))
                 b->on_click = [this, popup](Node*) {
                     cloud_upload();
                     popup->mouse_release();
diff --git a/src/canvas.cpp b/src/canvas.cpp
index 9beb7d2..a85a0b2 100644
--- a/src/canvas.cpp
+++ b/src/canvas.cpp
@@ -1921,183 +1921,69 @@ void Canvas::export_layers(std::string file_name, std::function<void()> on_compl
 
 void Canvas::export_layers_thread(std::string file_name)
 {
-    std::shared_ptr<NodeProgressBar> pb;
-    if (App::I->layout.m_loaded)
+    auto pb = App::I->show_progress("Export Layers", m_layers.size());
+    for (int i = 0; i < m_layers.size(); i++)
     {
-        pb = std::make_shared<NodeProgressBar>();
-        pb->m_manager = &App::I->layout;
-        pb->init();
-        pb->create();
-        pb->loaded();
-        pb->m_progress->SetWidthP(0);
-        pb->m_title->set_text("Export Pano Layers");
-        App::I->layout[App::I->main_id]->add_child(pb);
+        auto l = m_layers[i];
+        Image img = l->gen_equirect().get_image();
+        img.save_png(fmt::format("{}/{}-layer{:02d}-{}.png", App::I->work_path, file_name, i, l->m_name));
+        pb->increment();
     }
-    int progress = 0;
-    int total = (int)(m_layers.size() + 1) * 6;
+    pb->destroy();
+}
 
-    RTT m_latlong;
-    m_latlong.create(m_width * 4, m_height * 2); // NOTE: w and h must be equal to make sense
-
-    GLuint cube_id;
-    int faces[]{
-        GL_TEXTURE_CUBE_MAP_NEGATIVE_Z, // front
-        GL_TEXTURE_CUBE_MAP_NEGATIVE_X, // right
-        GL_TEXTURE_CUBE_MAP_POSITIVE_Z, // back
-        GL_TEXTURE_CUBE_MAP_POSITIVE_X, // left
-        GL_TEXTURE_CUBE_MAP_NEGATIVE_Y, // top
-        GL_TEXTURE_CUBE_MAP_POSITIVE_Y, // bottom
-    };
-    App::I->render_task([&]
+void Canvas::export_cube_faces(std::string file_name, std::function<void()> on_complete)
+{
+    if (App::I->check_license())
     {
-        glGenTextures(1, &cube_id);
-        glBindTexture(GL_TEXTURE_CUBE_MAP, cube_id);
-        for (GLuint i = 0; i < 6; i++)
-            glTexImage2D(GL_TEXTURE_CUBE_MAP_POSITIVE_X + i, 0, GL_RGBA8, m_width, m_height, 0, GL_RGBA, GL_UNSIGNED_BYTE, nullptr);
-    });
-
-    int seq = 0;
-    for (int layer_index = 0; layer_index < m_layers.size(); layer_index++)
-    {
-        for (int i = 0; i < 6; i++)
-        {
-            App::I->render_task([&]
-            {
-                // copy layer to cubemap
-                m_layers[layer_index]->m_rtt[i].bindFramebuffer();
-                glBindTexture(GL_TEXTURE_CUBE_MAP, cube_id);
-                glCopyTexImage2D(faces[i], 0, GL_RGBA8, 0, 0, m_width, m_height, 0);
-                glBindTexture(GL_TEXTURE_CUBE_MAP, 0);
-                m_layers[layer_index]->m_rtt[i].unbindFramebuffer();
+        std::thread t([=] {
+            BT_SetTerminate();
+            export_cube_faces_thread(file_name);
+            if (on_complete)
+                on_complete();
             });
-
-            progress++;
-            float p = (float)progress / total * 100.f;
-            LOG("progress: %f", p);
-
-            if (App::I->layout.m_loaded)
-            {
-                pb->m_progress->SetWidthP(p);
-            }
-        }
-
-        App::I->render_task([&]
-        {
-            glViewport(0, 0, m_latlong.getWidth(), m_latlong.getHeight());
-            glActiveTexture(GL_TEXTURE0);
-            m_latlong.bindFramebuffer();
-            m_latlong.clear({ 1, 1, 1, 0 });
-            ShaderManager::use(kShader::Equirect);
-            ShaderManager::u_mat4(kShaderUniform::MVP, glm::ortho(-.5f, .5f, -.5f, .5f, -1.f, 1.f));
-            ShaderManager::u_int(kShaderUniform::Tex, 0);
-            glBindTexture(GL_TEXTURE_CUBE_MAP, cube_id);
-            glDisable(GL_BLEND);
-            m_sampler_linear.bind(0);
-            m_plane.draw_fill();
-            glBindTexture(GL_TEXTURE_CUBE_MAP, 0);
-            m_latlong.unbindFramebuffer();
-        });
-
-        {
-            auto latlong_data = std::make_unique<uint8_t[]>(m_latlong.bytes());
-            m_latlong.readTextureData(latlong_data.get());
-            static char name[128];
-            sprintf(name, "%s/%s-layer-%02d.png", App::I->work_path.c_str(), file_name.c_str(), seq);
-            seq++;
-            LOG("writing %s", name);
-            int ret = stbi_write_png(name, m_latlong.getWidth(), m_latlong.getHeight(), 4, latlong_data.get(), m_latlong.stride());
-        }
-
-        progress++;
-        float p = (float)progress / total * 100.f;
-        LOG("progress: %f", p);
-
-        if (App::I->layout.m_loaded)
-        {
-            pb->m_progress->SetWidthP(p);
-        }
-    }
-
-    App::I->render_task([&]
-    {
-        glDeleteTextures(1, &cube_id);
-        m_latlong.destroy();
-    });
-
-    if (App::I->layout.m_loaded)
-    {
-        pb->destroy();
+        t.detach();
     }
 }
 
-void Canvas::export_cubes()
+void Canvas::export_cube_faces_thread(std::string file_name)
 {
-    if (!App::I->check_license())
-        return;
 #ifdef __OBJC__
     NSMutableArray* files = [NSMutableArray array];
 #endif
-	std::array<std::string, 6> names {
-		"pz", "px", "nz", "nx",
-		"py", "ny"
-	};
-	const int stride = m_width * 4;
-	auto buffer = std::make_unique<uint8_t[]>(m_width * m_height * 4);
-	auto flipped = std::make_unique<uint8_t[]>(m_width * m_height * 4);
-    for (int layer = 0; layer < m_layers.size(); layer++)
+    static std::array<const char*, 6> plane_names{ "front", "right", "back", "left", "top", "bottom" };
+
+    auto pb = App::I->show_progress("Export Cube Faces", 7);
+    
+    App::I->render_task([this] {
+        draw_merge(false);
+    });
+    pb->increment();
+
+    for (int i = 0; i < 6; i++)
     {
-		for (int plane = 0; plane < 6; plane++)
-		{
-			auto& l = m_layers[layer];
-			l->m_rtt[plane].bindFramebuffer();
-			glReadPixels(0, 0, m_width, m_height, GL_RGBA, GL_UNSIGNED_BYTE, buffer.get());
-			l->m_rtt[plane].unbindFramebuffer();
-
-			if (plane < 4)
-			{
-				for (int y = 0; y < m_height; y++)
-				{
-					int y_rev = m_height - y - 1;
-					std::copy_n(buffer.get() + y * stride, stride, flipped.get() + y_rev * stride);
-				}
-				std::swap(buffer, flipped);
-			}
-			else
-			{
-				for (int y = 0; y < m_height; y++)
-				{
-					auto src = (glm::u8vec4*)(buffer.get() + y * stride);
-					auto dst = (glm::u8vec4*)(flipped.get() + y * stride);
-					for (int x = 0; x < m_width; x++)
-					{
-						int x_rev = m_width - x - 1;
-						dst[x_rev] = src[x];
-					}
-					//std::copy_backward(src + stride, src, dst + stride);
-				}
-				std::swap(buffer, flipped);
-			}
-
-			static char name[128];
-			sprintf(name, "%s-%02d-%d.png", App::I->work_path.c_str(), layer, plane);
-			int ret = stbi_write_png(name, m_width, m_height, 4, buffer.get(), 0);
-
+        Image face = m_layers_merge.m_rtt[i].get_image();
+        std::string path = fmt::format("{}/{}-{}.png", App::I->work_path, file_name, plane_names[i]);
+        face.save_png(path);
+        pb->increment();
 
 #ifdef __IOS__
-            save_image_library(name);
+        save_image_library(path);
 #endif
 #ifdef __OBJC__
-            [files addObject:[NSString stringWithUTF8String : name]];
+        [files addObject : [NSString stringWithUTF8String:path.c_str()] ];
 #endif
-		}
-	}
+    }
+
+    pb->destroy();
+
 #ifdef __OBJC__
     static char name[128];
     sprintf(name, "%s.zip", App::I->work_path.c_str());
-    auto zip_path = [NSString stringWithUTF8String : name];
+    auto zip_path = [NSString stringWithUTF8String:name];
     //[SSZipArchive createZipFileAtPath:zip_path withFilesAtPaths:files];
-    for (NSString* f : files)
-        [[NSFileManager defaultManager] removeItemAtPath:f error:nil];
+    //for (NSString* f : files)
+    //    [[NSFileManager defaultManager] removeItemAtPath:f error:nil];
 #endif
 }
 
diff --git a/src/canvas.h b/src/canvas.h
index 2fd7ba3..9d54f61 100644
--- a/src/canvas.h
+++ b/src/canvas.h
@@ -204,10 +204,11 @@ public:
     void export_equirectangular(std::string file_path, std::function<void()> on_complete = nullptr);
     void export_equirectangular_thread(std::string file_path);
     void export_layers(std::string file_name, std::function<void()> on_complete = nullptr);
-	void export_layers_thread(std::string file_name);
+    void export_layers_thread(std::string file_name);
     void export_depth(std::string file_name, std::function<void()> on_complete = nullptr);
     void export_depth_thread(std::string file_name);
-    void export_cubes();
+    void export_cube_faces(std::string file_name, std::function<void()> on_complete);
+    void export_cube_faces_thread(std::string file_name);
     void project_save(std::function<void(bool)> on_complete = nullptr);
     void project_save(std::string file_path, std::function<void(bool)> on_complete = nullptr);
     bool project_save_thread(std::string file_path, bool show_progress);
diff --git a/src/node.cpp b/src/node.cpp
index 02984fa..47b182b 100644
--- a/src/node.cpp
+++ b/src/node.cpp
@@ -40,7 +40,7 @@
 void Node::app_redraw()
 {
     App::I->redraw = true;
-    App::I->ui_cv.notify_all();
+    App::I->render_cv.notify_all();
 }
 
 void Node::watch(std::function<bool(Node*)> observer)
@@ -82,11 +82,11 @@ kEventResult Node::on_event(Event* e)
 {
     kEventResult ret = kEventResult::Available;
     
-    if (current_mouse_capture && current_mouse_capture != this)
+    if (current_mouse_capture && current_mouse_capture.get() != this)
     {
         if (e->m_cat == kEventCategory::MouseEvent && 
             child_mouse_focus != current_mouse_capture &&
-            is_child(current_mouse_capture))
+            is_child(current_mouse_capture.get()))
         {
             MouseEvent* me = static_cast<MouseEvent*>(e);
             if (child_mouse_focus)
@@ -115,7 +115,7 @@ kEventResult Node::on_event(Event* e)
     }
 
     skip_children |= (e->m_cat == kEventCategory::MouseEvent || e->m_cat == kEventCategory::GestureEvent) &&
-        (m_mouse_captured) && (root()->current_mouse_capture == this) && m_capture_children; // <-- THIS IS WRONG "!m_capture_children" is correct, but it breaks everything if changed
+        (m_mouse_captured) && (root()->current_mouse_capture.get() == this) && m_capture_children; // <-- THIS IS WRONG "!m_capture_children" is correct, but it breaks everything if changed
     
     if (!m_display || glm::any(glm::lessThanEqual(zw(m_clip), { 0, 0 })))
         return kEventResult::Available;
@@ -134,7 +134,7 @@ kEventResult Node::on_event(Event* e)
                 }
                 else
                 {
-                    if (e->m_cat == kEventCategory::MouseEvent && child_mouse_focus != it->get())
+                    if (e->m_cat == kEventCategory::MouseEvent && child_mouse_focus.get() != it->get())
                     {
                         MouseEvent* me = static_cast<MouseEvent*>(e);
                         if (child_mouse_focus)
@@ -147,7 +147,7 @@ kEventResult Node::on_event(Event* e)
                         MouseEvent e2 = *me;
                         e2.m_type = kEventType::MouseFocus;
                         (*it)->handle_event(&e2);
-                        child_mouse_focus = it->get();
+                        child_mouse_focus = *it;
                         child_mouse_focus->m_mouse_focus = true;
                     }
                     ret = kEventResult::Consumed;
@@ -401,7 +401,7 @@ void Node::remove_child(Node* n)
             YGNodeRemoveChild(y_node, n->y_node);
             on_child_removed(n);
             m_children.erase(i);
-            if (child_mouse_focus == n)
+            if (child_mouse_focus.get() == n)
                 child_mouse_focus = nullptr;
         });
     }
@@ -542,7 +542,8 @@ void Node::mouse_capture()
     auto& s = root()->m_capture_stack;
 
     // already owner of capture
-    if (c == this || std::find(s.begin(), s.end(), this) != s.end())
+    if (c.get() == this || std::find_if(s.begin(), s.end(),
+        [this](const auto& a) { return a.get() == this; }) != s.end())
         return;
 
     if (c)
@@ -570,7 +571,7 @@ void Node::mouse_capture()
     }
     
     // make current
-    c = this;
+    c = shared_from_this();
     m_mouse_captured = true;
 }
 
@@ -582,8 +583,9 @@ void Node::mouse_release()
     auto& c = root()->current_mouse_capture;
     auto& s = root()->m_capture_stack;
 
-    s.erase(std::remove(s.begin(), s.end(), this), s.end());
-    if (c == this)
+    s.erase(std::remove_if(s.begin(), s.end(),
+        [this](const auto& a) { return a.get() == this; }), s.end());
+    if (c.get() == this)
     {
         if (s.empty())
         {
@@ -604,7 +606,7 @@ void Node::key_capture()
     if (!m_parent)
         return;
 
-    root()->current_key_capture = this;
+    root()->current_key_capture = shared_from_this();
     m_key_captured = true;
 }
 
@@ -1376,8 +1378,6 @@ void Node::clone_copy(Node* dest) const
     dest->m_pos_offset = m_pos_offset;
     dest->m_pos_offset_childred = m_pos_offset_childred;
     dest->m_clip_uncut = m_clip_uncut;
-
-
 }
 
 void Node::clone_children(Node* dest) const
diff --git a/src/node.h b/src/node.h
index 1d9b3bb..2b25c5b 100644
--- a/src/node.h
+++ b/src/node.h
@@ -103,9 +103,9 @@ public:
     uint16_t m_nodeID;
     std::string m_nodeID_s;
     std::vector<std::shared_ptr<Node>> m_children;
-    Node* current_mouse_capture = nullptr;
-    Node* current_key_capture = nullptr;
-    Node* child_mouse_focus = nullptr;
+    std::shared_ptr<Node> current_mouse_capture = nullptr;
+    std::shared_ptr<Node> current_key_capture = nullptr;
+    std::shared_ptr<Node> child_mouse_focus = nullptr;
     bool m_mouse_captured = false;
     bool m_key_captured = false;
 
@@ -117,7 +117,7 @@ public:
     bool m_force_mouse_capture = false;
     bool m_capture_children = true; // wether to capture children events when xx_capture() is used
     bool m_destroyed = false;
-    std::vector<Node*> m_capture_stack;
+    std::vector<std::shared_ptr<Node>> m_capture_stack;
 
     bool m_mouse_ignore = true;
     float m_zoom = 1.f;
diff --git a/src/node_canvas.cpp b/src/node_canvas.cpp
index bacff9b..1cf2194 100644
--- a/src/node_canvas.cpp
+++ b/src/node_canvas.cpp
@@ -63,6 +63,14 @@ void NodeCanvas::clear_context()
 
 void NodeCanvas::draw()
 {
+    // sanity checks
+    float zoom = root()->m_zoom;
+    if (zoom == 0.f)
+        zoom = 1.f;
+    auto box = m_clip * zoom;
+    if (box.z == 0 || box.w == 0)
+        return;
+
     GLint vp[4];
     GLfloat cc[4];
     glGetIntegerv(GL_VIEWPORT, vp);
@@ -73,8 +81,6 @@ void NodeCanvas::draw()
 
     glDisable(GL_SCISSOR_TEST);
 
-    float zoom = root()->m_zoom;
-    auto box = m_clip * zoom;
     glm::ivec4 c = (glm::ivec4)glm::vec4(box.x, (int)(vp[3] - box.y - box.w), box.z, box.w);
 
     //m_canvas->m_cam_rot = m_pan * 0.003f;
diff --git a/src/node_combobox.cpp b/src/node_combobox.cpp
index 2240f27..3c742ea 100644
--- a/src/node_combobox.cpp
+++ b/src/node_combobox.cpp
@@ -53,10 +53,10 @@ void NodeComboBox::loaded()
                     m_current_index = index;
                     m_selected_child_index = popup->get_child_index(target);
                     m_text->set_text(m_items[index].c_str());
-                    popup->mouse_release();
-                    popup->destroy();
                     if (on_select)
                         on_select(btn, index);
+                    popup->mouse_release();
+                    popup->destroy();
                 };
             }
         }
diff --git a/src/node_panel_brush.cpp b/src/node_panel_brush.cpp
index ea5f4eb..ea51c91 100644
--- a/src/node_panel_brush.cpp
+++ b/src/node_panel_brush.cpp
@@ -442,8 +442,7 @@ void NodePanelBrushPreset::init()
         if (!m_current)
             return;
         int index = m_container->get_child_index(m_current);
-        m_current->destroy_immediate();
-        m_container->remove_child(m_current);
+        m_current->destroy();
         if (m_container->m_children.empty())
         {
             m_current = nullptr;
diff --git a/src/node_panel_grid.cpp b/src/node_panel_grid.cpp
index eb1ae31..69e3dd1 100644
--- a/src/node_panel_grid.cpp
+++ b/src/node_panel_grid.cpp
@@ -467,7 +467,7 @@ void NodePanelGrid::bake_uvs()
     );
     while (pb_value < fb.getHeight())
     {
-        pb->m_progress->SetWidthP((float)pb_value / (float)fb.getHeight() * 100.f);
+        pb->set_progress((float)pb_value / (float)fb.getHeight());
         std::this_thread::sleep_for(std::chrono::milliseconds(100));
     }
     worker.join();
diff --git a/src/node_panel_stroke.cpp b/src/node_panel_stroke.cpp
index 4f14009..8fb93f4 100644
--- a/src/node_panel_stroke.cpp
+++ b/src/node_panel_stroke.cpp
@@ -76,8 +76,7 @@ bool NodePanelStroke::import_abr(const std::string& path)
         brush->m_user_brush = true;
         brush->on_click = std::bind(&NodePanelBrush::handle_click, m_brush_popup, std::placeholders::_1);
         count++;
-        float prog = (float)count / (float)tot;
-        pb->m_progress->SetWidthP(prog * 100.f);
+        pb->set_progress((float)count / (float)tot);
     });
     m_brush_popup->save();
 
@@ -105,8 +104,7 @@ bool NodePanelStroke::import_abr(const std::string& path)
         brush->m_user_brush = true;
         brush->on_click = std::bind(&NodePanelBrush::handle_click, m_pattern_popup, std::placeholders::_1);
         count++;
-        float prog = (float)count / (float)tot;
-        pb->m_progress->SetWidthP(prog * 100.f);
+        pb->set_progress((float)count / (float)tot);
     });
     m_pattern_popup->save();
 
@@ -119,8 +117,7 @@ bool NodePanelStroke::import_abr(const std::string& path)
             App::I->presets->add_brush(pr);
         }
         count++;
-        float prog = (float)count / (float)tot;
-        pb->m_progress->SetWidthP(prog * 100.f);
+        pb->set_progress((float)count / (float)tot);
     }
 
     App::I->presets->save();
diff --git a/src/node_progress_bar.cpp b/src/node_progress_bar.cpp
index 32e98d9..f3a5501 100644
--- a/src/node_progress_bar.cpp
+++ b/src/node_progress_bar.cpp
@@ -20,5 +20,17 @@ void NodeProgressBar::init()
     btn_cancel->on_click = [&](Node*) { destroy(); };
     m_progress = find<NodeBorder>("progress");
     
-    m_progress->SetWidthP(10);
+    m_progress->SetWidthP(0);
+}
+
+void NodeProgressBar::increment() noexcept
+{
+    m_count++;
+    if (m_total != 0)
+        m_progress->SetWidthP(((float)m_count / m_total) * 100.f);
+}
+
+void NodeProgressBar::set_progress(float p) noexcept
+{
+    m_progress->SetWidthP(p * 100.f);
 }
diff --git a/src/node_progress_bar.h b/src/node_progress_bar.h
index f5133e3..f8436e1 100644
--- a/src/node_progress_bar.h
+++ b/src/node_progress_bar.h
@@ -11,6 +11,11 @@ public:
     NodeButton* btn_cancel;
     NodeText* m_title;
     NodeBorder* m_progress;
+    int m_total = 0;
+    int m_count = 0;
     virtual Node* clone_instantiate() const override;
     virtual void init() override;
+    void increment() noexcept;
+    // set progress where p [0, 1]
+    void set_progress(float p) noexcept;
 };
diff --git a/src/rtt.cpp b/src/rtt.cpp
index d8e7cd7..9da0f1d 100644
--- a/src/rtt.cpp
+++ b/src/rtt.cpp
@@ -274,7 +274,7 @@ void RTT::clear_mask(glm::bool4 mask, glm::vec4 color)
     glColorMask(old_mask[0], old_mask[1], old_mask[2], old_mask[3]);
 }
 
-glm::ivec4 RTT::calc_bounds()
+glm::ivec4 RTT::calc_bounds() const noexcept
 {
     auto data = std::unique_ptr<glm::u8vec4[]>(reinterpret_cast<glm::u8vec4*>(readTextureData()));
     glm::ivec2 bbmin(w, h);
@@ -293,7 +293,7 @@ glm::ivec4 RTT::calc_bounds()
     return { bbmin, bbmax };
 }
 
-uint8_t* RTT::readTextureData(uint8_t* buffer)
+uint8_t* RTT::readTextureData(uint8_t* buffer) const noexcept
 {
     if (!buffer)
         buffer = createBuffer();
@@ -308,7 +308,7 @@ uint8_t* RTT::readTextureData(uint8_t* buffer)
     return buffer;
 }
 
-float* RTT::readTextureDataFloat(float* buffer)
+float* RTT::readTextureDataFloat(float* buffer) const noexcept
 {
     if (!buffer)
         buffer = createBufferFloat();
@@ -323,12 +323,12 @@ float* RTT::readTextureDataFloat(float* buffer)
     return buffer;
 }
 
-uint8_t* RTT::createBuffer()
+uint8_t* RTT::createBuffer() const noexcept
 {
     return new uint8_t[w * h * 4];
 }
 
-float * RTT::createBufferFloat()
+float * RTT::createBufferFloat() const noexcept
 {
     return new float[w * h * 4];
 }
@@ -345,4 +345,10 @@ void RTT::unbindTexture()
     glBindTexture(GL_TEXTURE_2D, 0);
 }
 
+Image RTT::get_image() const noexcept
+{
+    Image ret;
+    ret.create(w, h, readTextureData());
+    return ret;
+}
 
diff --git a/src/rtt.h b/src/rtt.h
index e17405f..aeaa869 100644
--- a/src/rtt.h
+++ b/src/rtt.h
@@ -1,4 +1,5 @@
 #pragma once
+#include "image.h"
 
 class RTT
 {
@@ -28,20 +29,21 @@ public:
     bool recreate() { return create(w, h); }
     void clear(glm::vec4 color = glm::vec4(0));
     void clear_mask(glm::bool4 mask, glm::vec4 color = glm::vec4(0));
-    glm::ivec4 calc_bounds();
-    uint8_t* readTextureData(uint8_t* buffer = nullptr);
-    float* readTextureDataFloat(float* buffer = nullptr);
-    uint8_t* createBuffer();
-    float* createBufferFloat();
+    glm::ivec4 calc_bounds() const noexcept;
+    uint8_t* readTextureData(uint8_t* buffer = nullptr) const noexcept;
+    float* readTextureDataFloat(float* buffer = nullptr) const noexcept;
+    uint8_t* createBuffer() const noexcept;
+    float* createBufferFloat() const noexcept;
     void bindFramebuffer();
     void unbindFramebuffer();
     void bindTexture();
     void unbindTexture();
-    GLuint getTextureID() const { return texID; }
-    int getWidth() const { return w; }
-    int getHeight() const { return h; }
-    glm::ivec2 getSize() const { return { w, h }; }
-    int bytes() const { return w * h * 4; }
-    int stride() const { return w * 4; }
-    GLuint getFBO() const { return fboID; }
+    GLuint getTextureID() const noexcept { return texID; }
+    int getWidth() const noexcept { return w; }
+    int getHeight() const noexcept { return h; }
+    glm::ivec2 getSize() const noexcept { return { w, h }; }
+    int bytes() const noexcept { return w * h * 4; }
+    int stride() const noexcept { return w * 4; }
+    GLuint getFBO() const noexcept { return fboID; }
+    Image get_image() const noexcept;
 };