From b40a5b656b666991d5dae1fa4ec0a4396de99369 Mon Sep 17 00:00:00 2001
From: omigamedev <omarator@gmail.com>
Date: Tue, 24 Oct 2017 14:20:12 +0100
Subject: [PATCH] add free and poly selection mask tools, fix some threading gl
 problems

---
 PanoPainter/GameViewController.m |   7 +-
 data/layout.xml                  |   4 +-
 engine/app.cpp                   |   1 +
 engine/app_layout.cpp            |  79 ++++++------
 engine/canvas.cpp                |   2 +
 engine/canvas.h                  |   2 +-
 engine/canvas_modes.cpp          | 200 +++++++++++++++++--------------
 engine/canvas_modes.h            |  13 ++
 engine/node_canvas.cpp           |  26 ++++
 9 files changed, 197 insertions(+), 137 deletions(-)

diff --git a/PanoPainter/GameViewController.m b/PanoPainter/GameViewController.m
index f43ba23..0278b5c 100644
--- a/PanoPainter/GameViewController.m
+++ b/PanoPainter/GameViewController.m
@@ -35,7 +35,7 @@ NSThread* lock_thread;
     lock_count++;
     [EAGLContext setCurrentContext:self.context];
     GLKView* view = (GLKView*)self.view;
-    //[view bindDrawable];
+    [view bindDrawable];
 }
 - (void)async_unlock
 {
@@ -45,7 +45,7 @@ NSThread* lock_thread;
 }
 - (void)async_swap
 {
-    [[EAGLContext currentContext] presentRenderbuffer:GL_RENDERBUFFER];
+    [self.context presentRenderbuffer:GL_RENDERBUFFER];
 }
 
 - (void)insertText:(NSString *)text
@@ -317,6 +317,7 @@ NSThread* lock_thread;
     [gl_lock lock];
     if (!(App::I.redraw || App::I.animate))
     {
+        [self.context presentRenderbuffer:GL_FRAMEBUFFER];
         [gl_lock unlock];
         return;
     }
@@ -324,7 +325,7 @@ NSThread* lock_thread;
     [view bindDrawable];
     App::I.clear();
     App::I.update(0);
-    //[self.context presentRenderbuffer:GL_FRAMEBUFFER];
+    [self.context presentRenderbuffer:GL_FRAMEBUFFER];
     [gl_lock unlock];
 }
 
diff --git a/data/layout.xml b/data/layout.xml
index a4ba7f5..3eba331 100644
--- a/data/layout.xml
+++ b/data/layout.xml
@@ -541,7 +541,9 @@
           
           <button id="btn-line" width="50" height="100%" margin="0 0 0 5" text="Line"/>
           <button id="btn-grid" width="50" height="100%" margin="0 0 0 0" text="Grid"/>
-          <button id="btn-fill" width="50" height="100%" margin="0 0 0 0" text="Mask"/>
+          <!-- <button id="btn-fill" width="50" height="100%" margin="0 0 0 0" text="Fill"/> -->
+          <button id="btn-mask-free" width="50" height="100%" margin="0 0 0 0" text="FMask"/>
+          <button id="btn-mask-line" width="50" height="100%" margin="0 0 0 0" text="LMask"/>
           
           <button-custom id="btn-bucket" width="50" height="100%" margin="0 0 0 5" thickness="1" border-color="0 0 0 1" pad="2">
             <image path="data/ui/bucket.png" width="100%" height="100%" align="center" justify="flex-end"/>
diff --git a/engine/app.cpp b/engine/app.cpp
index d58c7f0..65f372c 100644
--- a/engine/app.cpp
+++ b/engine/app.cpp
@@ -147,6 +147,7 @@ void App::async_update()
 #if __OSX__
     [osx_view async_swap];
 #elif __IOS__
+    [ios_view->glview bindDrawable];
     [ios_view async_swap];
 #elif __ANDROID__
     android_async_swap(and_engine);
diff --git a/engine/app_layout.cpp b/engine/app_layout.cpp
index 9d44618..023dd3d 100644
--- a/engine/app_layout.cpp
+++ b/engine/app_layout.cpp
@@ -241,15 +241,21 @@ void App::init_sidebar()
 
 void App::init_toolbar_draw()
 {
+    static auto select_button = [] (Node* main, NodeButton* button) {
+        main->find<NodeButton>("btn-pen")->set_color(color_button_normal);
+        main->find<NodeButton>("btn-erase")->set_color(color_button_normal);
+        main->find<NodeButton>("btn-line")->set_color(color_button_normal);
+        main->find<NodeButton>("btn-cam")->set_color(color_button_normal);
+        main->find<NodeButton>("btn-grid")->set_color(color_button_normal);
+        //main->find<NodeButton>("btn-fill")->set_color(color_button_normal);
+        main->find<NodeButton>("btn-mask-free")->set_color(color_button_normal);
+        main->find<NodeButton>("btn-mask-line")->set_color(color_button_normal);
+        button->set_color(color_button_hlight);
+    };
     if (auto* button = layout[main_id]->find<NodeButton>("btn-pen"))
     {
-        button->on_click = [this](Node*) {
-            layout[main_id]->find<NodeButton>("btn-pen")->set_color(color_button_hlight);
-            layout[main_id]->find<NodeButton>("btn-erase")->set_color(color_button_normal);
-            layout[main_id]->find<NodeButton>("btn-line")->set_color(color_button_normal);
-            layout[main_id]->find<NodeButton>("btn-cam")->set_color(color_button_normal);
-            layout[main_id]->find<NodeButton>("btn-grid")->set_color(color_button_normal);
-            layout[main_id]->find<NodeButton>("btn-fill")->set_color(color_button_normal);
+        button->on_click = [this, button](Node*) {
+            select_button(layout[main_id], button);
             Canvas::set_mode(Canvas::kCanvasMode::Draw);
         };
         layout[main_id]->find<NodeButton>("btn-pen")->set_color(color_button_hlight);
@@ -273,61 +279,50 @@ void App::init_toolbar_draw()
     }
     if (auto* button = layout[main_id]->find<NodeButton>("btn-erase"))
     {
-        button->on_click = [this](Node*) {
-            layout[main_id]->find<NodeButton>("btn-pen")->set_color(color_button_normal);
-            layout[main_id]->find<NodeButton>("btn-erase")->set_color(color_button_hlight);
-            layout[main_id]->find<NodeButton>("btn-line")->set_color(color_button_normal);
-            layout[main_id]->find<NodeButton>("btn-cam")->set_color(color_button_normal);
-            layout[main_id]->find<NodeButton>("btn-grid")->set_color(color_button_normal);
-            layout[main_id]->find<NodeButton>("btn-fill")->set_color(color_button_normal);
+        button->on_click = [this, button](Node*) {
+            select_button(layout[main_id], button);
             Canvas::set_mode(Canvas::kCanvasMode::Erase);
         };
     }
     if (auto* button = layout[main_id]->find<NodeButton>("btn-line"))
     {
-        button->on_click = [this](Node*) {
-            layout[main_id]->find<NodeButton>("btn-pen")->set_color(color_button_normal);
-            layout[main_id]->find<NodeButton>("btn-erase")->set_color(color_button_normal);
-            layout[main_id]->find<NodeButton>("btn-line")->set_color(color_button_hlight);
-            layout[main_id]->find<NodeButton>("btn-cam")->set_color(color_button_normal);
-            layout[main_id]->find<NodeButton>("btn-grid")->set_color(color_button_normal);
-            layout[main_id]->find<NodeButton>("btn-fill")->set_color(color_button_normal);
+        button->on_click = [this, button](Node*) {
+            select_button(layout[main_id], button);
             Canvas::set_mode(Canvas::kCanvasMode::Line);
         };
     }
     if (auto* button = layout[main_id]->find<NodeButton>("btn-cam"))
     {
-        button->on_click = [this](Node*) {
-            layout[main_id]->find<NodeButton>("btn-pen")->set_color(color_button_normal);
-            layout[main_id]->find<NodeButton>("btn-erase")->set_color(color_button_normal);
-            layout[main_id]->find<NodeButton>("btn-line")->set_color(color_button_normal);
-            layout[main_id]->find<NodeButton>("btn-cam")->set_color(color_button_hlight);
-            layout[main_id]->find<NodeButton>("btn-grid")->set_color(color_button_normal);
-            layout[main_id]->find<NodeButton>("btn-fill")->set_color(color_button_normal);
+        button->on_click = [this, button](Node*) {
+            select_button(layout[main_id], button);
             Canvas::set_mode(Canvas::kCanvasMode::Camera);
         };
     }
     if (auto* button = layout[main_id]->find<NodeButton>("btn-grid"))
     {
-        button->on_click = [this](Node*) {
-            layout[main_id]->find<NodeButton>("btn-pen")->set_color(color_button_normal);
-            layout[main_id]->find<NodeButton>("btn-erase")->set_color(color_button_normal);
-            layout[main_id]->find<NodeButton>("btn-line")->set_color(color_button_normal);
-            layout[main_id]->find<NodeButton>("btn-cam")->set_color(color_button_normal);
-            layout[main_id]->find<NodeButton>("btn-grid")->set_color(color_button_hlight);
-            layout[main_id]->find<NodeButton>("btn-fill")->set_color(color_button_normal);
+        button->on_click = [this, button](Node*) {
+            select_button(layout[main_id], button);
             Canvas::set_mode(Canvas::kCanvasMode::Grid);
         };
     }
     if (auto* button = layout[main_id]->find<NodeButton>("btn-fill"))
     {
-        button->on_click = [this](Node*) {
-            layout[main_id]->find<NodeButton>("btn-pen")->set_color(color_button_normal);
-            layout[main_id]->find<NodeButton>("btn-erase")->set_color(color_button_normal);
-            layout[main_id]->find<NodeButton>("btn-line")->set_color(color_button_normal);
-            layout[main_id]->find<NodeButton>("btn-cam")->set_color(color_button_normal);
-            layout[main_id]->find<NodeButton>("btn-grid")->set_color(color_button_normal);
-            layout[main_id]->find<NodeButton>("btn-fill")->set_color(color_button_hlight);
+        button->on_click = [this, button](Node*) {
+            select_button(layout[main_id], button);
+            Canvas::set_mode(Canvas::kCanvasMode::Fill);
+        };
+    }
+    if (auto* button = layout[main_id]->find<NodeButton>("btn-mask-free"))
+    {
+        button->on_click = [this, button](Node*) {
+            select_button(layout[main_id], button);
+            Canvas::set_mode(Canvas::kCanvasMode::MaskFree);
+        };
+    }
+    if (auto* button = layout[main_id]->find<NodeButton>("btn-mask-line"))
+    {
+        button->on_click = [this, button](Node*) {
+            select_button(layout[main_id], button);
             Canvas::set_mode(Canvas::kCanvasMode::Fill);
         };
     }
diff --git a/engine/canvas.cpp b/engine/canvas.cpp
index e3c6e1c..883b2d1 100644
--- a/engine/canvas.cpp
+++ b/engine/canvas.cpp
@@ -19,6 +19,8 @@ std::vector<CanvasMode*> ui::Canvas::modes[] = {
     { new CanvasModeCamera, new CanvasModeBasicCamera },
     { new CanvasModeGrid, new CanvasModeBasicCamera },
     { new CanvasModeFill, new CanvasModeBasicCamera },
+    { new CanvasModeMaskFree, new CanvasModeBasicCamera },
+    { new CanvasModeMaskFree, new CanvasModeBasicCamera },
 };
 glm::vec3 ui::Canvas::m_plane_origin[6] = {
     { 0, 0,-1}, // front
diff --git a/engine/canvas.h b/engine/canvas.h
index f7aa6e1..859013c 100644
--- a/engine/canvas.h
+++ b/engine/canvas.h
@@ -86,7 +86,7 @@ public:
     glm::vec3 m_cam_pos;
     float m_cam_fov = 85;
 
-    enum class kCanvasMode { Draw, Erase, Line, Camera, Grid, Fill, COUNT };
+    enum class kCanvasMode { Draw, Erase, Line, Camera, Grid, Fill, MaskFree, MaskLine, COUNT };
     kCanvasMode m_state{ kCanvasMode::Draw };
     static std::vector<CanvasMode*> modes[];
     std::vector<CanvasMode*>* m_mode = nullptr;
diff --git a/engine/canvas_modes.cpp b/engine/canvas_modes.cpp
index 1e97b08..1802bc0 100644
--- a/engine/canvas_modes.cpp
+++ b/engine/canvas_modes.cpp
@@ -367,45 +367,19 @@ void CanvasModeGrid::clear()
 
 ////////////////////////////////////////////////////////////////////
 
-void CanvasModeFill::init()
+void CanvasModeMaskFree::init()
 {
     m_shape.create();
 }
 
-void CanvasModeFill::leave()
+void CanvasModeMaskFree::leave()
 {
 //     canvas->draw_objects(std::bind(&CanvasModeFill::on_Draw, this, glm::mat4(), std::placeholders::_1, std::placeholders::_2));
 //     m_points.clear();
 }
 
-// Returns 1 if the lines intersect, otherwise 0. In addition, if the lines 
-// intersect the intersection point may be stored in the floats i_x and i_y.
-char get_line_intersection(float p0_x, float p0_y, float p1_x, float p1_y,
-    float p2_x, float p2_y, float p3_x, float p3_y, float *i_x, float *i_y)
-{
-    float s1_x, s1_y, s2_x, s2_y;
-    s1_x = p1_x - p0_x;     s1_y = p1_y - p0_y;
-    s2_x = p3_x - p2_x;     s2_y = p3_y - p2_y;
-
-    float s, t;
-    s = (-s1_y * (p0_x - p2_x) + s1_x * (p0_y - p2_y)) / (-s2_x * s1_y + s1_x * s2_y);
-    t = (s2_x * (p0_y - p2_y) - s2_y * (p0_x - p2_x)) / (-s2_x * s1_y + s1_x * s2_y);
-
-    if (s >= 0 && s <= 1 && t >= 0 && t <= 1)
-    {
-        // Collision detected
-        if (i_x != NULL)
-            *i_x = p0_x + (t * s1_x);
-        if (i_y != NULL)
-            *i_y = p0_y + (t * s1_y);
-        return 1;
-    }
-
-    return 0; // No collision
-}
-
 int SegmentCount = 0;
-std::vector<ui::Shape::vertex_t> CanvasModeFill::triangulate(const std::vector<std::shared_ptr<p2t::Point>>& points)
+std::vector<ui::Shape::vertex_t> CanvasModeMaskFree::triangulate(const std::vector<std::shared_ptr<p2t::Point>>& points)
 {
     struct Segment
     {
@@ -543,39 +517,13 @@ std::vector<ui::Shape::vertex_t> CanvasModeFill::triangulate(const std::vector<s
     return vertices;
 }
 
-void CanvasModeFill::on_MouseEvent(MouseEvent* me, glm::vec2& loc)
+void CanvasModeMaskFree::on_MouseEvent(MouseEvent* me, glm::vec2& loc)
 {
     static glm::vec2 oldpos;
     static glm::vec2 oldvec;
     static float acc = 0.f;
     switch (me->m_type)
     {
-    case kEventType::MouseDownR:
-    {
-        /*
-        if (!m_points.empty())
-        {
-            auto drawer = [this](const glm::mat4& camera, const glm::mat4& proj) {
-                ui::ShaderManager::use(ui::kShader::Color);
-                ui::ShaderManager::u_mat4(ui::kShaderUniform::MVP, proj * camera);
-                ui::ShaderManager::u_vec4(ui::kShaderUniform::Col, { node->m_brush.m_tip_color.rgb(), node->m_brush.m_tip_opacity });
-                m_shape.draw_fill();
-            };
-            std::vector<int> planes;
-            for (auto p : m_dirty_planes)
-            {
-                planes.push_back(p.first);
-                canvas->m_dirty_face[p.first] = true;
-                canvas->m_dirty_box[p.first] = { 0, 0, canvas->m_width, canvas->m_height };
-            }
-            canvas->snap_history(planes);
-            canvas->draw_objects(std::bind(drawer, std::placeholders::_1, std::placeholders::_2));
-            m_points.clear();
-            m_dirty_planes.clear();
-        }
-        */
-        break;
-    }
     case kEventType::MouseDownL:
     {
         node->mouse_capture();
@@ -618,17 +566,8 @@ void CanvasModeFill::on_MouseEvent(MouseEvent* me, glm::vec2& loc)
                     ui::ShaderManager::u_vec4(ui::kShaderUniform::Col, {1, 1, 1, 1});
                     m_shape.draw_fill();
                 };
-                std::vector<int> planes;
-                for (auto p : m_dirty_planes)
-                {
-                    planes.push_back(p.first);
-                    canvas->m_dirty_face[p.first] = true;
-                    canvas->m_dirty_box[p.first] = { 0, 0, canvas->m_width, canvas->m_height };
-                }
-                canvas->snap_history(planes);
                 canvas->draw_objects(std::bind(drawer, std::placeholders::_1, std::placeholders::_2), canvas->m_smask);
                 m_points.clear();
-                m_dirty_planes.clear();
             }
         }
         else
@@ -667,35 +606,116 @@ void CanvasModeFill::on_MouseEvent(MouseEvent* me, glm::vec2& loc)
             }
         }
         break;
-/*
-glm::vec3 ro, rd, hit_o, hit_d;
-glm::vec2 hit_fb;
-int plane_id;
-if (canvas->point_trace_plane(loc, ro, rd, hit_o, hit_d, hit_fb, 0))
+    }
+    case kEventType::MouseCancel:
+        if (m_dragging)
+        {
+            m_points.pop_back();
+            m_shape.update_vertices(m_points.data(), (int)m_points.size());
+        }
+        m_dragging = false;
+        node->mouse_release();
+        if (m_points.size() < 4)
+        {
+            m_points.clear();
+            m_shape.update_vertices(m_points.data(), (int)m_points.size());
+        }
+        break;
+    default:
+        break;
+    }
+}
+
+void CanvasModeMaskFree::on_Draw(const glm::mat4& ortho, const glm::mat4& proj, const glm::mat4& camera)
 {
-    m_dirty_planes[plane_id]++;
-    ui::Shape::vertex_t v;
-    v.pos = glm::vec4(hit_o, 1);
-    v.uvs = glm::vec2(0);
-    if (m_points.size() < 3)
+    if (!m_points.empty())
     {
-        m_points.push_back(v);
+        ui::ShaderManager::use(ui::kShader::Color);
+        ui::ShaderManager::u_mat4(ui::kShaderUniform::MVP, glm::scale(glm::vec3(1,-1,1)) * ortho);
+        ui::ShaderManager::u_vec4(ui::kShaderUniform::Col, { 0, 0, 0, 1 });
+        m_dragging ? m_shape.draw_stroke() : m_shape.draw_fill();
+    }
+}
+
+
+////////////////////////////////////////////////////////////////////
+
+void CanvasModeFill::init()
+{
+    m_shape.create();
+}
+
+void CanvasModeFill::leave()
+{
+    if (m_points.size() > 2)
+    {
+        auto drawer = [this](const glm::mat4& camera, const glm::mat4& proj) {
+            ui::ShaderManager::use(ui::kShader::Color);
+            ui::ShaderManager::u_mat4(ui::kShaderUniform::MVP, proj * camera);
+            ui::ShaderManager::u_vec4(ui::kShaderUniform::Col, {1, 1, 1, 1});
+            m_shape.draw_fill();
+        };
+        canvas->draw_objects(std::bind(drawer, std::placeholders::_1, std::placeholders::_2), canvas->m_smask);
+        m_points.clear();
+        canvas->m_smask_active = true;
     }
     else
     {
-        auto last = m_points.back();
-        m_points.push_back(m_points[0]);
-        m_points.push_back(last);
-        m_points.push_back(v);
-        float isx, isy;
-        if (get_line_intersection(m_points[0].pos.x, m_points[0].pos.y, v.pos.x, v.pos.y, 1, -1, 1, 1, &isx, &isy))
-        {
-            LOG("intersection in %f %f", isx, isy);
-        }
+        canvas->m_smask_active = false;
     }
-    m_shape.update_vertices(m_points.data(), m_points.size());
 }
-*/
+
+void CanvasModeFill::on_MouseEvent(MouseEvent* me, glm::vec2& loc)
+{
+    switch (me->m_type)
+    {
+    case kEventType::MouseDownL:
+    {
+        node->mouse_capture();
+        m_dragging = true;
+        glm::vec3 ro, rd, hit_o, hit_d;
+        glm::vec2 hit_fb;
+        int plane_id;
+        if (canvas->point_trace_plane(loc, ro, rd, hit_o, hit_d, hit_fb, 0))
+        {
+            m_dirty_planes[plane_id]++;
+            ui::Shape::vertex_t v;
+            v.pos = glm::vec4(hit_o, 1);
+            v.uvs = glm::vec2(0);
+            if (m_points.size() < 3)
+            {
+                m_points.push_back(v);
+            }
+            else
+            {
+                auto last = m_points.back();
+                m_points.push_back(m_points[0]);
+                m_points.push_back(last);
+                m_points.push_back(v);
+            }
+            m_shape.update_vertices(m_points.data(), (int)m_points.size());
+        }
+        canvas->m_smask.clear({0, 0, 0, 0});
+        break;
+    }
+    case kEventType::MouseUpL:
+        node->mouse_release();
+        m_dragging = false;
+        break;
+    case kEventType::MouseMove:
+    {
+        glm::vec3 ro, rd, hit_o, hit_d;
+        glm::vec2 fb_pos;
+        int plane_id;
+        if (m_dragging && canvas->point_trace(loc, ro, rd, hit_o, fb_pos, hit_d, plane_id))
+        {
+            ui::Shape::vertex_t v;
+            v.pos = glm::vec4(hit_o, 1);
+            v.uvs = glm::vec2(0);
+            m_points.back() = v;
+            m_shape.update_vertices(m_points.data(), (int)m_points.size());
+        }
+        break;
     }
     case kEventType::MouseCancel:
         if (m_dragging)
@@ -721,8 +741,8 @@ void CanvasModeFill::on_Draw(const glm::mat4& ortho, const glm::mat4& proj, cons
     if (!m_points.empty())
     {
         ui::ShaderManager::use(ui::kShader::Color);
-        ui::ShaderManager::u_mat4(ui::kShaderUniform::MVP, glm::scale(glm::vec3(1,-1,1)) * ortho);
-        ui::ShaderManager::u_vec4(ui::kShaderUniform::Col, { 0, 0, 0, 1 });
-        m_dragging ? m_shape.draw_stroke() : m_shape.draw_fill();
+        ui::ShaderManager::u_mat4(ui::kShaderUniform::MVP, proj * camera);
+        ui::ShaderManager::u_vec4(ui::kShaderUniform::Col, { 0, 0, 0, .25 });
+        m_shape.draw_fill();
     }
 }
diff --git a/engine/canvas_modes.h b/engine/canvas_modes.h
index 6f830d5..a9107e0 100644
--- a/engine/canvas_modes.h
+++ b/engine/canvas_modes.h
@@ -92,6 +92,19 @@ public:
 };
 
 class CanvasModeFill : public CanvasMode
+{
+    ui::DynamicShape m_shape;
+    bool m_dragging = false;
+    std::vector<ui::Shape::vertex_t> m_points;
+    std::map<int, int> m_dirty_planes;
+public:
+    virtual void on_Draw(const glm::mat4& ortho, const glm::mat4& proj, const glm::mat4& camera) override;
+    virtual void on_MouseEvent(MouseEvent* me, glm::vec2& loc) override;
+    virtual void init() override;
+    virtual void leave() override;
+};
+
+class CanvasModeMaskFree : public CanvasMode
 {
     ui::DynamicShape m_shape;
     bool m_dragging = false;
diff --git a/engine/node_canvas.cpp b/engine/node_canvas.cpp
index 3cb9f1e..4046002 100644
--- a/engine/node_canvas.cpp
+++ b/engine/node_canvas.cpp
@@ -120,6 +120,7 @@ void NodeCanvas::draw()
             
             if (m_canvas->m_state == ui::Canvas::kCanvasMode::Erase && m_canvas->m_show_tmp && m_canvas->m_current_layer_idx == layer_index)
             {
+                m_sampler.bind(0);
                 ui::ShaderManager::use(kShader::CompErase);
                 ui::ShaderManager::u_int(kShaderUniform::Tex, 0);
                 ui::ShaderManager::u_int(kShaderUniform::TexStroke, 1);
@@ -143,6 +144,7 @@ void NodeCanvas::draw()
             }
             else if(m_canvas->m_show_tmp && m_canvas->m_current_layer_idx == layer_index)
             {
+                m_sampler.bind(0);
                 auto& paper = TextureManager::get(const_hash("data/paper.jpg"));
                 ui::ShaderManager::use(kShader::CompDraw);
                 ui::ShaderManager::u_int(kShaderUniform::Tex, 0);
@@ -172,6 +174,7 @@ void NodeCanvas::draw()
             }
             else
             {
+                m_sampler_stencil.bind(0);
                 ui::ShaderManager::use(kShader::TextureAlpha);
                 ui::ShaderManager::u_int(kShaderUniform::Tex, 0);
                 ui::ShaderManager::u_float(kShaderUniform::Alpha, m_canvas->m_layers[layer_index].m_opacity);
@@ -199,6 +202,29 @@ void NodeCanvas::draw()
         }
     }
 
+    if (m_canvas->m_smask_active && !m_canvas->m_show_tmp)
+    {
+        glDisable(GL_DEPTH_TEST);
+        glClear(GL_DEPTH_BUFFER_BIT);
+        for (int plane_index = 0; plane_index < 6; plane_index++)
+        {
+            auto plane_mvp = proj * camera *
+//                glm::scale(glm::vec3(m_canvas->m_order.size() + 500)) *
+                m_canvas->m_plane_transform[plane_index] *
+                glm::translate(glm::vec3(0, 0, -1));
+
+            ui::ShaderManager::use(kShader::TextureAlpha);
+            ui::ShaderManager::u_int(kShaderUniform::Tex, 0);
+            ui::ShaderManager::u_float(kShaderUniform::Alpha, 0.5f);
+            ui::ShaderManager::u_int(kShaderUniform::Highlight, 0);
+            ui::ShaderManager::u_mat4(kShaderUniform::MVP, plane_mvp);
+            glActiveTexture(GL_TEXTURE0);
+            m_canvas->m_smask.m_rtt[plane_index].bindTexture();
+            m_face_plane.draw_fill();
+            m_canvas->m_smask.m_rtt[plane_index].unbindTexture();
+        }
+    }
+
     for (auto& mode : *m_canvas->m_mode)
         mode->on_Draw(ortho_proj, proj, camera);