Add menu: Export as Image

New feature: Exporting rendered model as png.
A offscreen render been introduced for generating normal and depth maps, which are been generated for toon shader edge detection.

dust3d.pro

@@ -134,6 +134,12 @@ include(thirdparty/QtAwesome/QtAwesome/QtAwesome.pri)
 
 INCLUDEPATH += src
 
+SOURCES += src/normalanddepthmapsgenerator.cpp
+HEADERS += src/normalanddepthmapsgenerator.h
+
+SOURCES += src/modelofflinerender.cpp
+HEADERS += src/modelofflinerender.h
+
 SOURCES += src/modelshaderprogram.cpp
 HEADERS += src/modelshaderprogram.h
 

languages/dust3d_es_AR.ts

@@ -391,6 +391,14 @@ Consejos:
         <source>Rotation</source>
         <translation>Rotación</translation>
     </message>
+    <message>
+        <source>Export as Image...</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <source>Image (*.png)</source>
+        <translation type="unfinished"></translation>
+    </message>
 </context>
 <context>
     <name>ExportPreviewWidget</name>
@@ -969,7 +977,7 @@ Consejos:
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <source>Tong shading:</source>
+        <source>Toon shading:</source>
         <translation type="unfinished"></translation>
     </message>
 </context>

languages/dust3d_it_IT.ts

@@ -71,8 +71,8 @@ Tips:
   - Make multiple parts instead of one single part for whole model</source>
         <translation>Generazione mesh non riuscita, annulla o modifica i nodi modificati di recente
 Suggerimenti:
-   - Non lasciare che la mesh generata si intersechi in se stessa
+&#xa0;&#xa0; - Non lasciare che la mesh generata si intersechi in se stessa
-   - Crea più parti invece di una singola parte per l&apos;intero modello</translation>
+&#xa0;&#xa0; - Crea più parti invece di una singola parte per l&apos;intero modello</translation>
     </message>
     <message>
         <source>Parts</source>
@@ -398,6 +398,14 @@ Suggerimenti:
         <source>Enter zoom out mode</source>
         <translation type="unfinished"></translation>
     </message>
+    <message>
+        <source>Export as Image...</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <source>Image (*.png)</source>
+        <translation type="unfinished"></translation>
+    </message>
 </context>
 <context>
     <name>ExportPreviewWidget</name>
@@ -976,7 +984,7 @@ Suggerimenti:
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <source>Tong shading:</source>
+        <source>Toon shading:</source>
         <translation type="unfinished"></translation>
     </message>
 </context>

languages/dust3d_zh_CN.ts

@@ -391,6 +391,14 @@ Tips:
         <source>Script</source>
         <translation>脚本</translation>
     </message>
+    <message>
+        <source>Export as Image...</source>
+        <translation>导出成图片...</translation>
+    </message>
+    <message>
+        <source>Image (*.png)</source>
+        <translation>图片 (*.png)</translation>
+    </message>
 </context>
 <context>
     <name>ExportPreviewWidget</name>
@@ -969,7 +977,7 @@ Tips:
         <translation>纹理大小：</translation>
     </message>
     <message>
-        <source>Tong shading:</source>
+        <source>Toon shading:</source>
         <translation>卡通渲染</translation>
     </message>
 </context>

shaders/default.core.frag

@@ -86,7 +86,13 @@ uniform samplerCube environmentIrradianceMapId;
 uniform int environmentIrradianceMapEnabled;
 uniform samplerCube environmentSpecularMapId;
 uniform int environmentSpecularMapEnabled;
-uniform int tongShadingEnabled;
+uniform int toonShadingEnabled;
+uniform int renderPurpose;
+uniform int toonEdgeEnabled;
+uniform float screenWidth;
+uniform float screenHeight;
+uniform sampler2D toonNormalMapId;
+uniform sampler2D toonDepthMapId;
 
 const int MAX_LIGHTS = 8;
 const int TYPE_POINT = 0;
@@ -106,6 +112,122 @@ struct Light {
 int lightCount;
 Light lights[MAX_LIGHTS];
 
+float sobel_v[9];
+float sobel_h[9];
+
+float normalEdgeSobel()
+{
+    sobel_v[0] = -1.0;
+    sobel_v[1] = 0.0;
+    sobel_v[2] = 1.0;
+    sobel_v[3] = -2.0; 
+    sobel_v[4] = 0.0;  
+    sobel_v[5] = 2.0;
+    sobel_v[6] = -1.0;  
+    sobel_v[7] = 0.0;  
+    sobel_v[8] = 1.0;
+
+    sobel_h[0] = -1.0;
+    sobel_h[1] = -2.0;
+    sobel_h[2] = -1.0;
+    sobel_h[3] = 0.0; 
+    sobel_h[4] = 0.0;  
+    sobel_h[5] = 0.0;
+    sobel_h[6] = 1.0;  
+    sobel_h[7] = 2.0; 
+    sobel_h[8] = 1.0;
+
+    // vec2 coord = gl_TexCoord[0].st;
+    vec2 coord = vec2(gl_FragCoord.x / screenWidth, 1.0 - gl_FragCoord.y / screenHeight);
+    //float len = length(coord);
+    
+    float sx = 1.0 / screenWidth;
+	float sy = 1.0 / screenHeight;
+    float n[9];
+    vec3 ref = vec3(1.0, 1.0, 1.0);
+    
+    n[0] = dot(texture(toonNormalMapId, vec2(coord.x - sx, coord.y - sy)).rgb, ref);
+    n[1] = dot(texture(toonNormalMapId, vec2(coord.x, coord.y - sy)).rgb, ref);
+    n[2] = dot(texture(toonNormalMapId, vec2(coord.x + sx, coord.y - sy)).rgb, ref);
+    n[3] = dot(texture(toonNormalMapId, vec2(coord.x - sx, coord.y)).rgb, ref);
+    n[4] = dot(texture(toonNormalMapId, vec2(coord.x, coord.y)).rgb, ref);
+    n[5] = dot(texture(toonNormalMapId, vec2(coord.x + sx, coord.y)).rgb, ref);
+    n[6] = dot(texture(toonNormalMapId, vec2(coord.x - sx, coord.y + sy)).rgb, ref);
+    n[7] = dot(texture(toonNormalMapId, vec2(coord.x, coord.y + sy)).rgb, ref);
+    n[8] = dot(texture(toonNormalMapId, vec2(coord.x + sx, coord.y + sy)).rgb, ref);
+    
+    float v, h;
+
+    v = 0.0;
+    h = 0.0;
+    
+    for (int i = 0; i < 9; ++i) {
+        v += sobel_v[i] * n[i];
+        h += sobel_h[i] * n[i];
+    }
+    
+    float enhanceFactor = 1.0;
+    
+    float r = sqrt(v * v * enhanceFactor + h * h * enhanceFactor);
+    return smoothstep(0.0, 1.0, r);
+}
+                         
+float depthEdgeSobel()
+{
+    sobel_v[0] = -1;
+    sobel_v[1] = 0;
+    sobel_v[2] = 1;
+    sobel_v[3] = -2; 
+    sobel_v[4] = 0;  
+    sobel_v[5] = 2;
+    sobel_v[6] = -1;  
+    sobel_v[7] = 0;  
+    sobel_v[8] = 1;
+
+    sobel_h[0] = -1;
+    sobel_h[1] = -2;
+    sobel_h[2] = -1;
+    sobel_h[3] = 0; 
+    sobel_h[4] = 0;  
+    sobel_h[5] = 0;
+    sobel_h[6] = 1;  
+    sobel_h[7] = 2; 
+    sobel_h[8] = 1;
+
+    // vec2 coord = gl_TexCoord[0].st;
+    vec2 coord = vec2(gl_FragCoord.x / screenWidth, 1.0 - gl_FragCoord.y / screenHeight);
+    //float len = length(coord);
+    
+    float sx = 1.0 / screenWidth;
+	float sy = 1.0 / screenHeight;
+    float n[9];
+    
+    n[0] = texture(toonDepthMapId, vec2(coord.x - sx, coord.y - sy)).r;
+    n[1] = texture(toonDepthMapId, vec2(coord.x, coord.y - sy)).r;
+    n[2] = texture(toonDepthMapId, vec2(coord.x + sx, coord.y - sy)).r;
+    n[3] = texture(toonDepthMapId, vec2(coord.x - sx, coord.y)).r;
+    n[4] = texture(toonDepthMapId, vec2(coord.x, coord.y)).r;
+    n[5] = texture(toonDepthMapId, vec2(coord.x + sx, coord.y)).r;
+    n[6] = texture(toonDepthMapId, vec2(coord.x - sx, coord.y + sy)).r;
+    n[7] = texture(toonDepthMapId, vec2(coord.x, coord.y + sy)).r;
+    n[8] = texture(toonDepthMapId, vec2(coord.x + sx, coord.y + sy)).r;
+    
+    float v, h;
+
+    v = 0.0;
+    h = 0.0;
+    
+    for (int i = 0; i < 9; ++i) {
+        v += sobel_v[i] * n[i];
+        h += sobel_h[i] * n[i];
+    }
+    
+    float enhanceFactor = 10.0;
+    
+    float r = sqrt(v * v * enhanceFactor + h * h * enhanceFactor);
+    return smoothstep(0.0, 1.0, r);
+}
+
 int mipLevelCount(const in samplerCube cube)
 {
     int baseSize = textureSize(cube, 0).x;
@@ -385,7 +507,7 @@ vec4 metalRoughFunction(const in vec4 baseColor,
     // Remap roughness for a perceptually more linear correspondence
     float alpha = remapRoughness(roughness);
     
-    if (tongShadingEnabled != 1) {
+    if (toonShadingEnabled != 1) {
         if (environmentIrradianceMapEnabled == 1) {
             cLinear += pbrIblModel(worldNormal,
                 worldView,
@@ -414,6 +536,14 @@ vec4 metalRoughFunction(const in vec4 baseColor,
             cLinear = hsv2rgb(vec3(hsv.r, hsv.g, hsv.b * 2.0));
         else
             cLinear = hsv2rgb(vec3(hsv.r, hsv.g, hsv.b * 0.1));
+        
+        if (toonEdgeEnabled == 1) {
+            float depthEdge = depthEdgeSobel();
+            float normalEdge = normalEdgeSobel();
+            if (depthEdge >= 0.009 || normalEdge >= 0.6) {
+                cLinear = hsv2rgb(vec3(hsv.r, hsv.g, hsv.b * 0.02));
+            }
+        }
     }
 
     // Apply exposure correction
@@ -508,12 +638,18 @@ void main()
         roughness = min(0.99, roughness);
         metalness = min(0.99, metalness);
     }
-
+    
-    fragColor = metalRoughFunction(vec4(color, alpha),
+    if (renderPurpose == 0) {
-                                      metalness,
+        fragColor = metalRoughFunction(vec4(color, alpha),
-                                      roughness,
+                                          metalness,
-                                      ambientOcclusion,
+                                          roughness,
-                                      vert,
+                                          ambientOcclusion,
-                                      normalize(cameraPos - vert),
+                                          vert,
-                                      normal);
+                                          normalize(cameraPos - vert),
+                                          normal);
+    } else if (renderPurpose == 1) {
+        fragColor = vec4(normal, 1.0);
+    } else if (renderPurpose == 2) {
+        fragColor = vec4(vec3(gl_FragCoord.w), 1.0);
+    }
 }

shaders/default.frag

@@ -1,3 +1,4 @@
+#version 110
 /****************************************************************************
 **
 ** Copyright (C) 2017 Klaralvdalens Datakonsult AB (KDAB).
@@ -80,7 +81,13 @@ uniform int ambientOcclusionMapEnabled;
 uniform int mousePickEnabled;
 uniform vec3 mousePickTargetPosition;
 uniform float mousePickRadius;
-uniform int tongShadingEnabled;
+uniform int toonShadingEnabled;
+uniform int renderPurpose;
+uniform int toonEdgeEnabled;
+uniform float screenWidth;
+uniform float screenHeight;
+uniform sampler2D toonNormalMapId;
+uniform sampler2D toonDepthMapId;
 
 const int MAX_LIGHTS = 8;
 const int TYPE_POINT = 0;
@@ -100,6 +107,122 @@ struct Light {
 int lightCount;
 Light lights[MAX_LIGHTS];
 
+float sobel_v[9];
+float sobel_h[9];
+
+float normalEdgeSobel()
+{
+    sobel_v[0] = -1.0;
+    sobel_v[1] = 0.0;
+    sobel_v[2] = 1.0;
+    sobel_v[3] = -2.0; 
+    sobel_v[4] = 0.0;  
+    sobel_v[5] = 2.0;
+    sobel_v[6] = -1.0;  
+    sobel_v[7] = 0.0;  
+    sobel_v[8] = 1.0;
+
+    sobel_h[0] = -1.0;
+    sobel_h[1] = -2.0;
+    sobel_h[2] = -1.0;
+    sobel_h[3] = 0.0; 
+    sobel_h[4] = 0.0;  
+    sobel_h[5] = 0.0;
+    sobel_h[6] = 1.0;  
+    sobel_h[7] = 2.0; 
+    sobel_h[8] = 1.0;
+
+    // vec2 coord = gl_TexCoord[0].st;
+    vec2 coord = vec2(gl_FragCoord.x / screenWidth - 1.0, 1.0 - gl_FragCoord.y / screenHeight);
+    //float len = length(coord);
+    
+    float sx = 1.0 / screenWidth;
+	float sy = 1.0 / screenHeight;
+    float n[9];
+    vec3 ref = vec3(1.0, 1.0, 1.0);
+    
+    n[0] = dot(texture2D(toonNormalMapId, vec2(coord.x - sx, coord.y - sy)).rgb, ref);
+    n[1] = dot(texture2D(toonNormalMapId, vec2(coord.x, coord.y - sy)).rgb, ref);
+    n[2] = dot(texture2D(toonNormalMapId, vec2(coord.x + sx, coord.y - sy)).rgb, ref);
+    n[3] = dot(texture2D(toonNormalMapId, vec2(coord.x - sx, coord.y)).rgb, ref);
+    n[4] = dot(texture2D(toonNormalMapId, vec2(coord.x, coord.y)).rgb, ref);
+    n[5] = dot(texture2D(toonNormalMapId, vec2(coord.x + sx, coord.y)).rgb, ref);
+    n[6] = dot(texture2D(toonNormalMapId, vec2(coord.x - sx, coord.y + sy)).rgb, ref);
+    n[7] = dot(texture2D(toonNormalMapId, vec2(coord.x, coord.y + sy)).rgb, ref);
+    n[8] = dot(texture2D(toonNormalMapId, vec2(coord.x + sx, coord.y + sy)).rgb, ref);
+    
+    float v, h;
+
+    v = 0.0;
+    h = 0.0;
+    
+    for (int i = 0; i < 9; ++i) {
+        v += sobel_v[i] * n[i];
+        h += sobel_h[i] * n[i];
+    }
+    
+    float enhanceFactor = 1.0;
+    
+    float r = sqrt(v * v * enhanceFactor + h * h * enhanceFactor);
+    return smoothstep(0.0, 1.0, r);
+}
+                         
+float depthEdgeSobel()
+{
+    sobel_v[0] = -1.0;
+    sobel_v[1] = 0.0;
+    sobel_v[2] = 1.0;
+    sobel_v[3] = -2.0; 
+    sobel_v[4] = 0.0;  
+    sobel_v[5] = 2.0;
+    sobel_v[6] = -1.0;  
+    sobel_v[7] = 0.0;  
+    sobel_v[8] = 1.0;
+
+    sobel_h[0] = -1.0;
+    sobel_h[1] = -2.0;
+    sobel_h[2] = -1.0;
+    sobel_h[3] = 0.0; 
+    sobel_h[4] = 0.0;  
+    sobel_h[5] = 0.0;
+    sobel_h[6] = 1.0;  
+    sobel_h[7] = 2.0; 
+    sobel_h[8] = 1.0;
+
+    // vec2 coord = gl_TexCoord[0].st;
+    vec2 coord = vec2(gl_FragCoord.x / screenWidth - 1.0, 1.0 - gl_FragCoord.y / screenHeight);
+    //float len = length(coord);
+    
+    float sx = 1.0 / screenWidth;
+	float sy = 1.0 / screenHeight;
+    float n[9];
+    
+    n[0] = texture2D(toonDepthMapId, vec2(coord.x - sx, coord.y - sy)).r;
+    n[1] = texture2D(toonDepthMapId, vec2(coord.x, coord.y - sy)).r;
+    n[2] = texture2D(toonDepthMapId, vec2(coord.x + sx, coord.y - sy)).r;
+    n[3] = texture2D(toonDepthMapId, vec2(coord.x - sx, coord.y)).r;
+    n[4] = texture2D(toonDepthMapId, vec2(coord.x, coord.y)).r;
+    n[5] = texture2D(toonDepthMapId, vec2(coord.x + sx, coord.y)).r;
+    n[6] = texture2D(toonDepthMapId, vec2(coord.x - sx, coord.y + sy)).r;
+    n[7] = texture2D(toonDepthMapId, vec2(coord.x, coord.y + sy)).r;
+    n[8] = texture2D(toonDepthMapId, vec2(coord.x + sx, coord.y + sy)).r;
+    
+    float v, h;
+
+    v = 0.0;
+    h = 0.0;
+    
+    for (int i = 0; i < 9; ++i) {
+        v += sobel_v[i] * n[i];
+        h += sobel_h[i] * n[i];
+    }
+    
+    float enhanceFactor = 10.0;
+    
+    float r = sqrt(v * v * enhanceFactor + h * h * enhanceFactor);
+    return smoothstep(0.0, 1.0, r);
+}
+
 float remapRoughness(const in float roughness)
 {
     // As per page 14 of
@@ -281,7 +404,7 @@ vec4 metalRoughFunction(const in vec4 baseColor,
     // Remap roughness for a perceptually more linear correspondence
     float alpha = remapRoughness(roughness);
     
-    if (tongShadingEnabled != 1) {
+    if (toonShadingEnabled != 1) {
         for (int i = 0; i < lightCount; ++i) {
             cLinear += pbrModel(i,
                                 worldPosition,
@@ -301,6 +424,14 @@ vec4 metalRoughFunction(const in vec4 baseColor,
             cLinear = hsv2rgb(vec3(hsv.r, hsv.g, hsv.b * 2.0));
         else
             cLinear = hsv2rgb(vec3(hsv.r, hsv.g, hsv.b * 0.1));
+
+        if (toonEdgeEnabled == 1) {
+            float depthEdge = depthEdgeSobel();
+            float normalEdge = normalEdgeSobel();
+            if (depthEdge >= 0.009 || normalEdge >= 0.6) {
+                cLinear = hsv2rgb(vec3(hsv.r, hsv.g, hsv.b * 0.02));
+            }
+        }
     }
 
     // Apply exposure correction
@@ -393,12 +524,18 @@ void main()
     
     roughness = min(0.99, roughness);
     metalness = min(0.99, metalness);
-
+    
-    gl_FragColor = metalRoughFunction(vec4(color, alpha),
+    if (renderPurpose == 0) {
-                                      metalness,
+        gl_FragColor = metalRoughFunction(vec4(color, alpha),
-                                      roughness,
+                                          metalness,
-                                      ambientOcclusion,
+                                          roughness,
-                                      vert,
+                                          ambientOcclusion,
-                                      normalize(cameraPos - vert),
+                                          vert,
-                                      normal);
+                                          normalize(cameraPos - vert),
+                                          normal);
+    } else if (renderPurpose == 1) {
+        gl_FragColor = vec4(normal, 1.0);
+    } else if (renderPurpose == 2) {
+        gl_FragColor = vec4(vec3(gl_FragCoord.w), 1.0);
+    }
 }

shaders/default.vert

@@ -1,3 +1,4 @@
+#version 110
 attribute vec4 vertex;
 attribute vec3 normal;
 attribute vec3 color;

src/documentwindow.cpp

@@ -42,6 +42,7 @@
 #include "scriptwidget.h"
 #include "variablesxml.h"
 #include "updatescheckwidget.h"
+#include "modelofflinerender.h"
 
 int DocumentWindow::m_modelRenderWidgetInitialX = 16;
 int DocumentWindow::m_modelRenderWidgetInitialY = 16;
@@ -310,7 +311,8 @@ DocumentWindow::DocumentWindow() :
     m_modelRenderWidget->setSizePolicy(QSizePolicy::Minimum, QSizePolicy::Minimum);
     m_modelRenderWidget->move(DocumentWindow::m_modelRenderWidgetInitialX, DocumentWindow::m_modelRenderWidgetInitialY);
     m_modelRenderWidget->setMousePickRadius(m_document->mousePickRadius());
-    m_modelRenderWidget->toggleWireframe();
+    if (!Preferences::instance().toonShading())
+		m_modelRenderWidget->toggleWireframe();
     m_modelRenderWidget->enableEnvironmentLight();
     
     connect(m_modelRenderWidget, &ModelWidget::mouseRayChanged, m_document,
@@ -341,6 +343,8 @@ DocumentWindow::DocumentWindow() :
         m_modelRenderWidget->setMousePickTargetPositionInModelSpace(m_document->mouseTargetPosition());
     });
     
+    connect(m_modelRenderWidget, &ModelWidget::renderParametersChanged, this, &DocumentWindow::delayedGenerateNormalAndDepthMaps);
+    
     m_graphicsWidget->setModelWidget(m_modelRenderWidget);
     containerWidget->setModelWidget(m_modelRenderWidget);
     
@@ -494,9 +498,9 @@ DocumentWindow::DocumentWindow() :
     connect(m_exportAsObjAction, &QAction::triggered, this, &DocumentWindow::exportObjResult, Qt::QueuedConnection);
     m_fileMenu->addAction(m_exportAsObjAction);
     
-    //m_exportRenderedAsImageAction = new QAction(tr("Export as PNG..."), this);
+    m_exportRenderedAsImageAction = new QAction(tr("Export as Image..."), this);
-    //connect(m_exportRenderedAsImageAction, &QAction::triggered, this, &SkeletonDocumentWindow::exportRenderedResult, Qt::QueuedConnection);
+    connect(m_exportRenderedAsImageAction, &QAction::triggered, this, &DocumentWindow::exportRenderedResult, Qt::QueuedConnection);
-    //m_fileMenu->addAction(m_exportRenderedAsImageAction);
+    m_fileMenu->addAction(m_exportRenderedAsImageAction);
     
     //m_exportAsObjPlusMaterialsAction = new QAction(tr("Wavefront (.obj + .mtl)..."), this);
     //connect(m_exportAsObjPlusMaterialsAction, &QAction::triggered, this, &SkeletonDocumentWindow::exportObjPlusMaterialsResult, Qt::QueuedConnection);
@@ -518,7 +522,7 @@ DocumentWindow::DocumentWindow() :
         m_exportAsObjAction->setEnabled(m_graphicsWidget->hasItems());
         //m_exportAsObjPlusMaterialsAction->setEnabled(m_graphicsWidget->hasItems());
         m_exportAction->setEnabled(m_graphicsWidget->hasItems());
-        //m_exportRenderedAsImageAction->setEnabled(m_graphicsWidget->hasItems());
+        m_exportRenderedAsImageAction->setEnabled(m_graphicsWidget->hasItems());
     });
 
     m_editMenu = menuBar()->addMenu(tr("&Edit"));
@@ -1603,6 +1607,16 @@ void DocumentWindow::showPreferences()
     m_preferencesWidget->raise();
 }
 
+void DocumentWindow::exportRenderedResult()
+{
+    QString filename = QFileDialog::getSaveFileName(this, QString(), QString(),
+       tr("Image (*.png)"));
+    if (filename.isEmpty()) {
+        return;
+    }
+    exportImageToFilename(filename);
+}
+
 void DocumentWindow::exportObjResult()
 {
     QString filename = QFileDialog::getSaveFileName(this, QString(), QString(),
@@ -1940,3 +1954,92 @@ void DocumentWindow::checkExportWaitingList()
 //    m_infoWidget->move(0, m_graphicsContainerWidget->height() - m_infoWidget->height() - 5);
 //}
 
+void DocumentWindow::normalAndDepthMapsReady()
+{
+    QImage *normalMap = m_normalAndDepthMapsGenerator->takeNormalMap();
+    QImage *depthMap = m_normalAndDepthMapsGenerator->takeDepthMap();
+    
+    m_modelRenderWidget->updateToonNormalAndDepthMaps(normalMap, depthMap);
+    
+    //m_normalAndDepthMapsGenerator->setRenderThread(QGuiApplication::instance()->thread());
+    
+    delete m_normalAndDepthMapsGenerator;
+    m_normalAndDepthMapsGenerator = nullptr;
+    
+    if (m_isNormalAndDepthMapsObsolete) {
+        generateNormalAndDepthMaps();
+    }
+}
+
+void DocumentWindow::generateNormalAndDepthMaps()
+{
+    if (nullptr != m_normalAndDepthMapsGenerator) {
+        m_isNormalAndDepthMapsObsolete = true;
+        return;
+    }
+    
+    m_isNormalAndDepthMapsObsolete = false;
+    
+    auto resultMesh = m_document->takeResultMesh();
+    if (nullptr == resultMesh)
+		return;
+    
+    QThread *thread = new QThread;
+    m_normalAndDepthMapsGenerator = new NormalAndDepthMapsGenerator(m_modelRenderWidget);
+    m_normalAndDepthMapsGenerator->updateMesh(resultMesh);
+    m_normalAndDepthMapsGenerator->moveToThread(thread);
+    //m_normalAndDepthMapsGenerator->setRenderThread(thread);
+    connect(thread, &QThread::started, m_normalAndDepthMapsGenerator, &NormalAndDepthMapsGenerator::process);
+    connect(m_normalAndDepthMapsGenerator, &NormalAndDepthMapsGenerator::finished, this, &DocumentWindow::normalAndDepthMapsReady);
+    connect(m_normalAndDepthMapsGenerator, &NormalAndDepthMapsGenerator::finished, thread, &QThread::quit);
+    connect(thread, &QThread::finished, thread, &QThread::deleteLater);
+    thread->start();
+    
+    //m_normalAndDepthMapsGenerator = new NormalAndDepthMapsGenerator(m_modelRenderWidget);
+    //m_normalAndDepthMapsGenerator->updateMesh(resultMesh);
+    //connect(m_normalAndDepthMapsGenerator, &NormalAndDepthMapsGenerator::finished, this, &DocumentWindow::normalAndDepthMapsReady);
+    //m_normalAndDepthMapsGenerator->process();
+}
+
+void DocumentWindow::delayedGenerateNormalAndDepthMaps()
+{
+    if (!Preferences::instance().toonShading())
+        return;
+    
+    //delete m_normalAndDepthMapsDelayTimer;
+    //m_normalAndDepthMapsDelayTimer = new QTimer(this);
+    //m_normalAndDepthMapsDelayTimer->setSingleShot(true);
+    //m_normalAndDepthMapsDelayTimer->setInterval(250);
+    //connect(m_normalAndDepthMapsDelayTimer, &QTimer::timeout, [=] {
+        generateNormalAndDepthMaps();
+    //});
+    //m_normalAndDepthMapsDelayTimer->start();
+}
+
+void DocumentWindow::exportImageToFilename(const QString &filename)
+{
+    QApplication::setOverrideCursor(Qt::WaitCursor);
+    MeshLoader *resultMesh = m_modelRenderWidget->fetchCurrentMesh();
+    if (nullptr != resultMesh) {
+        ModelOfflineRender *offlineRender = new ModelOfflineRender(m_modelRenderWidget->format());
+        offlineRender->setXRotation(m_modelRenderWidget->xRot());
+        offlineRender->setYRotation(m_modelRenderWidget->yRot());
+        offlineRender->setZRotation(m_modelRenderWidget->zRot());
+        offlineRender->setRenderPurpose(0);
+        QImage *normalMap = new QImage();
+        QImage *depthMap = new QImage();
+        m_modelRenderWidget->fetchCurrentToonNormalAndDepthMaps(normalMap, depthMap);
+        if (!normalMap->isNull() && !depthMap->isNull()) {
+            offlineRender->updateToonNormalAndDepthMaps(normalMap, depthMap);
+        } else {
+            delete normalMap;
+            delete depthMap;
+        }
+        offlineRender->updateMesh(resultMesh);
+        if (Preferences::instance().toonShading())
+            offlineRender->setToonShading(true);
+        offlineRender->toImage(QSize(m_modelRenderWidget->widthInPixels(),
+            m_modelRenderWidget->heightInPixels())).save(filename);
+    }
+    QApplication::restoreOverrideCursor();
+}

src/documentwindow.h

@@ -10,6 +10,7 @@
 #include <map>
 #include <QStringList>
 #include <QLabel>
+#include <QTimer>
 #include "document.h"
 #include "modelwidget.h"
 #include "exportpreviewwidget.h"
@@ -18,6 +19,7 @@
 #include "posemanagewidget.h"
 #include "preferenceswidget.h"
 #include "graphicscontainerwidget.h"
+#include "normalanddepthmapsgenerator.h"
 
 class SkeletonGraphicsWidget;
 
@@ -49,6 +51,7 @@ public slots:
     void open();
     void openExample(const QString &modelName);
     void openPathAs(const QString &path, const QString &asName);
+    void exportRenderedResult();
     void exportObjResult();
     void exportGlbResult();
     void exportFbxResult();
@@ -78,11 +81,15 @@ public slots:
     void showCutFaceSettingPopup(const QPoint &globalPos, std::set<QUuid> nodeIds);
     void setExportWaitingList(const QStringList &filenames);
     void checkExportWaitingList();
+    void exportImageToFilename(const QString &filename);
     void exportObjToFilename(const QString &filename);
     void exportFbxToFilename(const QString &filename);
     void exportGlbToFilename(const QString &filename);
     void toggleRotation();
     //void updateInfoWidgetPosition();
+    void generateNormalAndDepthMaps();
+    void delayedGenerateNormalAndDepthMaps();
+    void normalAndDepthMapsReady();
 private:
     void initLockButton(QPushButton *button);
     void setCurrentFilename(const QString &filename);
@@ -199,6 +206,10 @@ private:
     QPushButton *m_radiusLockButton;
     
     QMetaObject::Connection m_partListDockerVisibleSwitchConnection;
+    
+    NormalAndDepthMapsGenerator *m_normalAndDepthMapsGenerator = nullptr;
+    QTimer *m_normalAndDepthMapsDelayTimer = nullptr;
+    bool m_isNormalAndDepthMapsObsolete = false;
 public:
     static int m_modelRenderWidgetInitialX;
     static int m_modelRenderWidgetInitialY;

src/logbrowser.cpp

@@ -1,6 +1,7 @@
 #include "logbrowser.h"
 // Modified from https://wiki.qt.io/Browser_for_QDebug_output
 #include <QMetaType>
+#include <stdio.h>
 #include "logbrowserdialog.h"
 
 LogBrowser::LogBrowser(QObject *parent) :

src/modelmeshbinder.cpp

@@ -23,6 +23,12 @@ ModelMeshBinder::~ModelMeshBinder()
     delete m_metalnessRoughnessAmbientOcclusionMap;
     delete m_environmentIrradianceMap;
     delete m_environmentSpecularMap;
+    delete m_toonNormalMap;
+    delete m_toonDepthMap;
+    delete m_newToonNormalMap;
+    delete m_newToonDepthMap;
+    delete m_currentToonNormalMap;
+    delete m_currentToonDepthMap;
 }
 
 void ModelMeshBinder::updateMesh(MeshLoader *mesh)
@@ -61,6 +67,14 @@ void ModelMeshBinder::enableEnvironmentLight()
     m_environmentLightEnabled = true;
 }
 
+MeshLoader *ModelMeshBinder::fetchCurrentMesh()
+{
+    QMutexLocker lock(&m_meshMutex);
+    if (nullptr == m_mesh)
+        return nullptr;
+    return new MeshLoader(*m_mesh);
+}
+
 void ModelMeshBinder::paint(ModelShaderProgram *program)
 {
     MeshLoader *newMesh = nullptr;
@@ -74,6 +88,33 @@ void ModelMeshBinder::paint(ModelShaderProgram *program)
             hasNewMesh = true;
         }
     }
+    if (m_newToonMapsComing) {
+        QMutexLocker lock(&m_toonNormalAndDepthMapMutex);
+        if (m_newToonMapsComing) {
+            
+            delete m_toonNormalMap;
+            m_toonNormalMap = nullptr;
+            delete m_currentToonNormalMap;
+            m_currentToonNormalMap = nullptr;
+            if (nullptr != m_newToonNormalMap) {
+				m_toonNormalMap = new QOpenGLTexture(*m_newToonNormalMap);
+				m_currentToonNormalMap = m_newToonNormalMap;
+				m_newToonNormalMap = nullptr;
+			}
+            
+            delete m_toonDepthMap;
+            m_toonDepthMap = nullptr;
+            delete m_currentToonDepthMap;
+            m_currentToonDepthMap = nullptr;
+            if (nullptr != m_newToonDepthMap) {
+				m_toonDepthMap = new QOpenGLTexture(*m_newToonDepthMap);
+				m_currentToonDepthMap = m_newToonDepthMap;
+				m_newToonDepthMap = nullptr;
+            }
+            
+            m_newToonMapsComing = false;
+        }
+    }
     {
         QMutexLocker lock(&m_meshMutex);
         if (hasNewMesh) {
@@ -218,6 +259,8 @@ void ModelMeshBinder::paint(ModelShaderProgram *program)
     program->setUniformValue(program->metalnessRoughnessAmbientOcclusionMapIdLoc(), 2);
     program->setUniformValue(program->environmentIrradianceMapIdLoc(), 3);
     program->setUniformValue(program->environmentSpecularMapIdLoc(), 4);
+    program->setUniformValue(program->toonNormalMapIdLoc(), 5);
+    program->setUniformValue(program->toonDepthMapIdLoc(), 6);
     if (m_showWireframes) {
         if (m_renderEdgeVertexCount > 0) {
             QOpenGLVertexArrayObject::Binder vaoBinder(&m_vaoEdge);
@@ -275,6 +318,11 @@ void ModelMeshBinder::paint(ModelShaderProgram *program)
                 program->setUniformValue(program->environmentSpecularMapEnabledLoc(), 0);
             }
         }
+        if (nullptr != m_toonNormalMap && nullptr != m_toonDepthMap) {
+            m_toonNormalMap->bind(5);
+            m_toonDepthMap->bind(6);
+            program->setUniformValue(program->toonEdgeEnabledLoc(), 1);
+        }
         f->glDrawArrays(GL_TRIANGLES, 0, m_renderTriangleVertexCount);
     }
     if (m_toolEnabled) {
@@ -295,6 +343,28 @@ void ModelMeshBinder::paint(ModelShaderProgram *program)
     }
 }
 
+void ModelMeshBinder::fetchCurrentToonNormalAndDepthMaps(QImage *normalMap, QImage *depthMap)
+{
+    QMutexLocker lock(&m_toonNormalAndDepthMapMutex);
+    if (nullptr != normalMap && nullptr != m_currentToonNormalMap)
+        *normalMap = *m_currentToonNormalMap;
+    if (nullptr != depthMap && nullptr != m_currentToonDepthMap)
+        *depthMap = *m_currentToonDepthMap;
+}
+
+void ModelMeshBinder::updateToonNormalAndDepthMaps(QImage *normalMap, QImage *depthMap)
+{
+    QMutexLocker lock(&m_toonNormalAndDepthMapMutex);
+    
+    delete m_newToonNormalMap;
+    m_newToonNormalMap = normalMap;
+    
+    delete m_newToonDepthMap;
+    m_newToonDepthMap = depthMap;
+    
+    m_newToonMapsComing = true;
+}
+
 void ModelMeshBinder::cleanup()
 {
     if (m_vboTriangle.isCreated())
@@ -315,6 +385,10 @@ void ModelMeshBinder::cleanup()
     m_environmentIrradianceMap = nullptr;
     delete m_environmentSpecularMap;
     m_environmentSpecularMap = nullptr;
+    delete m_toonNormalMap;
+    m_toonNormalMap = nullptr;
+    delete m_toonDepthMap;
+    m_toonDepthMap = nullptr;
 }
 
 void ModelMeshBinder::showWireframes()

src/modelmeshbinder.h

@@ -13,6 +13,7 @@ class ModelMeshBinder
 public:
     ModelMeshBinder(bool toolEnabled=false);
     ~ModelMeshBinder();
+    MeshLoader *fetchCurrentMesh();
     void updateMesh(MeshLoader *mesh);
     void initialize();
     void paint(ModelShaderProgram *program);
@@ -25,6 +26,8 @@ public:
     void enableEnvironmentLight();
     bool isCheckUvEnabled();
     void reloadMesh();
+    void fetchCurrentToonNormalAndDepthMaps(QImage *normalMap, QImage *depthMap);
+    void updateToonNormalAndDepthMaps(QImage *normalMap, QImage *depthMap);
 private:
     MeshLoader *m_mesh = nullptr;
     MeshLoader *m_newMesh = nullptr;
@@ -46,6 +49,13 @@ private:
     bool m_environmentLightEnabled = false;
     QOpenGLTexture *m_environmentIrradianceMap = nullptr;
     QOpenGLTexture *m_environmentSpecularMap = nullptr;
+    QOpenGLTexture *m_toonNormalMap = nullptr;
+    QOpenGLTexture *m_toonDepthMap = nullptr;
+    QImage *m_newToonNormalMap = nullptr;
+    QImage *m_newToonDepthMap = nullptr;
+    QImage *m_currentToonNormalMap = nullptr;
+    QImage *m_currentToonDepthMap = nullptr;
+    bool m_newToonMapsComing = false;
 private:
     QOpenGLVertexArrayObject m_vaoTriangle;
     QOpenGLBuffer m_vboTriangle;
@@ -55,6 +65,7 @@ private:
     QOpenGLBuffer m_vboTool;
     QMutex m_meshMutex;
     QMutex m_newMeshMutex;
+    QMutex m_toonNormalAndDepthMapMutex;
 };
 
 #endif

src/modelofflinerender.cpp

@@ -0,0 +1,186 @@
+#include <QOpenGLFramebufferObjectFormat>
+#include <QThread>
+#include <QDebug>
+#include "modelofflinerender.h"
+
+ModelOfflineRender::ModelOfflineRender(const QSurfaceFormat &format, QScreen *targetScreen) :
+    QOffscreenSurface(targetScreen),
+    m_context(nullptr),
+    m_mesh(nullptr)
+{
+    setFormat(format);
+    create();
+    if (!isValid())
+        qDebug() << "ModelOfflineRender is invalid";
+}
+
+ModelOfflineRender::~ModelOfflineRender()
+{
+    destroy();
+    delete m_mesh;
+    delete m_normalMap;
+    delete m_depthMap;
+}
+
+void ModelOfflineRender::updateMesh(MeshLoader *mesh)
+{
+    delete m_mesh;
+    m_mesh = mesh;
+}
+
+void ModelOfflineRender::setRenderThread(QThread *thread)
+{
+	//this->moveToThread(thread);
+}
+
+void ModelOfflineRender::setXRotation(int angle)
+{
+    m_xRot = angle;
+}
+
+void ModelOfflineRender::setYRotation(int angle)
+{
+    m_yRot = angle;
+}
+
+void ModelOfflineRender::setZRotation(int angle)
+{
+    m_zRot = angle;
+}
+
+void ModelOfflineRender::setRenderPurpose(int purpose)
+{
+    m_renderPurpose = purpose;
+}
+
+void ModelOfflineRender::setToonShading(bool toonShading)
+{
+    m_toonShading = toonShading;
+}
+
+void ModelOfflineRender::updateToonNormalAndDepthMaps(QImage *normalMap, QImage *depthMap)
+{
+    delete m_normalMap;
+    m_normalMap = normalMap;
+    
+    delete m_depthMap;
+    m_depthMap = depthMap;
+}
+
+QImage ModelOfflineRender::toImage(const QSize &size)
+{
+	QImage image;
+	
+	m_context = new QOpenGLContext();
+    m_context->setFormat(format());
+    if (!m_context->create()) {
+		delete m_context;
+		m_context = nullptr;
+		
+        qDebug() << "QOpenGLContext create failed";
+        return image;
+	}
+    
+    if (!m_context->makeCurrent(this)) {
+		delete m_context;
+		m_context = nullptr;
+		
+        qDebug() << "QOpenGLContext makeCurrent failed";
+        return image;
+    }
+    
+    QOpenGLFramebufferObjectFormat format;
+    format.setAttachment(QOpenGLFramebufferObject::CombinedDepthStencil);
+    format.setSamples(4);
+    format.setTextureTarget(GL_TEXTURE_2D);
+    format.setInternalTextureFormat(GL_RGBA32F_ARB);
+    QOpenGLFramebufferObject *renderFbo = new QOpenGLFramebufferObject(size, format);
+    renderFbo->bind();
+    m_context->functions()->glViewport(0, 0, size.width(), size.height());
+    
+    if (nullptr != m_mesh) {
+        QMatrix4x4 projection;
+        QMatrix4x4 world;
+        QMatrix4x4 camera;
+        
+        bool isCoreProfile = false;
+        const char *versionString = (const char *)m_context->functions()->glGetString(GL_VERSION);
+        if (nullptr != versionString &&
+                '\0' != versionString[0] &&
+                0 == strstr(versionString, "Mesa")) {
+            isCoreProfile = m_context->format().profile() == QSurfaceFormat::CoreProfile;
+        }
+
+        ModelShaderProgram *program = new ModelShaderProgram(isCoreProfile);
+        ModelMeshBinder meshBinder;
+        meshBinder.initialize();
+        meshBinder.hideWireframes();
+        if (nullptr != m_normalMap && nullptr != m_depthMap) {
+            meshBinder.updateToonNormalAndDepthMaps(m_normalMap, m_depthMap);
+            m_normalMap = nullptr;
+            m_depthMap = nullptr;
+        }
+		
+        m_context->functions()->glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+        m_context->functions()->glEnable(GL_BLEND);
+        m_context->functions()->glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+        m_context->functions()->glEnable(GL_DEPTH_TEST);
+        m_context->functions()->glEnable(GL_CULL_FACE);
+#ifdef GL_LINE_SMOOTH
+        m_context->functions()->glEnable(GL_LINE_SMOOTH);
+#endif
+
+        world.setToIdentity();
+        world.rotate(m_xRot / 16.0f, 1, 0, 0);
+        world.rotate(m_yRot / 16.0f, 0, 1, 0);
+        world.rotate(m_zRot / 16.0f, 0, 0, 1);
+
+        projection.setToIdentity();
+        projection.perspective(45.0f, GLfloat(size.width()) / size.height(), 0.01f, 100.0f);
+        
+        camera.setToIdentity();
+        camera.translate(QVector3D(0, 0, -4.0));
+        
+        program->bind();
+        program->setUniformValue(program->lightPosLoc(), QVector3D(0, 0, 70));
+        program->setUniformValue(program->toonShadingEnabledLoc(), m_toonShading ? 1 : 0);
+        program->setUniformValue(program->projectionMatrixLoc(), projection);
+        program->setUniformValue(program->modelMatrixLoc(), world);
+        QMatrix3x3 normalMatrix = world.normalMatrix();
+        program->setUniformValue(program->normalMatrixLoc(), normalMatrix);
+        program->setUniformValue(program->viewMatrixLoc(), camera);
+        program->setUniformValue(program->textureEnabledLoc(), 0);
+        program->setUniformValue(program->normalMapEnabledLoc(), 0);
+        program->setUniformValue(program->mousePickEnabledLoc(), 0);
+        program->setUniformValue(program->renderPurposeLoc(), m_renderPurpose);
+        
+        program->setUniformValue(program->toonEdgeEnabledLoc(), 0);
+        program->setUniformValue(program->screenWidthLoc(), (GLfloat)size.width());
+        program->setUniformValue(program->screenHeightLoc(), (GLfloat)size.height());
+        program->setUniformValue(program->toonNormalMapIdLoc(), 0);
+        program->setUniformValue(program->toonDepthMapIdLoc(), 0);
+
+        meshBinder.updateMesh(m_mesh);
+        meshBinder.paint(program);
+
+        meshBinder.cleanup();
+
+        program->release();
+        delete program;
+
+        m_mesh = nullptr;
+    }
+
+    m_context->functions()->glFlush();
+
+    image = renderFbo->toImage();
+
+    renderFbo->bindDefault();
+    delete renderFbo;
+
+    m_context->doneCurrent();
+    delete m_context;
+    m_context = nullptr;
+
+    return image;
+}

src/modelofflinerender.h

@@ -0,0 +1,39 @@
+#ifndef DUST3D_MODEL_OFFLINE_RENDER_H
+#define DUST3D_MODEL_OFFLINE_RENDER_H
+#include <QOffscreenSurface>
+#include <QScreen>
+#include <QOpenGLFunctions>
+#include <QOpenGLContext>
+#include <QImage>
+#include <QThread>
+#include "modelshaderprogram.h"
+#include "modelmeshbinder.h"
+#include "meshloader.h"
+
+class ModelOfflineRender : QOffscreenSurface
+{
+public:
+    ModelOfflineRender(const QSurfaceFormat &format, QScreen *targetScreen = Q_NULLPTR);
+    ~ModelOfflineRender();
+    void setXRotation(int angle);
+    void setYRotation(int angle);
+    void setZRotation(int angle);
+    void setRenderPurpose(int purpose);
+    void setRenderThread(QThread *thread);
+    void updateMesh(MeshLoader *mesh);
+    void updateToonNormalAndDepthMaps(QImage *normalMap, QImage *depthMap);
+    void setToonShading(bool toonShading);
+    QImage toImage(const QSize &size);
+private:
+    int m_xRot = 0;
+    int m_yRot = 0;
+    int m_zRot = 0;
+    int m_renderPurpose = 0;
+    QOpenGLContext *m_context = nullptr;
+    MeshLoader *m_mesh = nullptr;
+    QImage *m_normalMap = nullptr;
+    QImage *m_depthMap = nullptr;
+    bool m_toonShading = false;
+};
+
+#endif

src/modelshaderprogram.cpp

@@ -58,7 +58,13 @@ ModelShaderProgram::ModelShaderProgram(bool isCoreProfile)
     m_mousePickEnabledLoc = this->uniformLocation("mousePickEnabled");
     m_mousePickTargetPositionLoc = this->uniformLocation("mousePickTargetPosition");
     m_mousePickRadiusLoc = this->uniformLocation("mousePickRadius");
-    m_tongShadingEnabledLoc = this->uniformLocation("tongShadingEnabled");
+    m_toonShadingEnabledLoc = this->uniformLocation("toonShadingEnabled");
+    m_renderPurposeLoc = this->uniformLocation("renderPurpose");
+    m_toonEdgeEnabledLoc = this->uniformLocation("toonEdgeEnabled");
+    m_screenWidthLoc = this->uniformLocation("screenWidth");
+    m_screenHeightLoc = this->uniformLocation("screenHeight");
+    m_toonNormalMapIdLoc = this->uniformLocation("toonNormalMapId");
+    m_toonDepthMapIdLoc = this->uniformLocation("toonDepthMapId");
     if (m_isCoreProfile) {
         m_environmentIrradianceMapIdLoc = this->uniformLocation("environmentIrradianceMapId");
         m_environmentIrradianceMapEnabledLoc = this->uniformLocation("environmentIrradianceMapEnabled");
@@ -167,7 +173,37 @@ int ModelShaderProgram::environmentSpecularMapEnabledLoc()
     return m_environmentSpecularMapEnabledLoc;
 }
 
-int ModelShaderProgram::tongShadingEnabledLoc()
+int ModelShaderProgram::toonShadingEnabledLoc()
 {
-    return m_tongShadingEnabledLoc;
+    return m_toonShadingEnabledLoc;
-}
+}
+
+int ModelShaderProgram::renderPurposeLoc()
+{
+    return m_renderPurposeLoc;
+}
+
+int ModelShaderProgram::toonEdgeEnabledLoc()
+{
+    return m_toonEdgeEnabledLoc;
+}
+
+int ModelShaderProgram::screenWidthLoc()
+{
+    return m_screenWidthLoc;
+}
+
+int ModelShaderProgram::screenHeightLoc()
+{
+    return m_screenHeightLoc;
+}
+
+int ModelShaderProgram::toonNormalMapIdLoc()
+{
+    return m_toonNormalMapIdLoc;
+}
+
+int ModelShaderProgram::toonDepthMapIdLoc()
+{
+    return m_toonDepthMapIdLoc;
+}

src/modelshaderprogram.h

@@ -27,7 +27,13 @@ public:
     int environmentIrradianceMapEnabledLoc();
     int environmentSpecularMapIdLoc();
     int environmentSpecularMapEnabledLoc();
-    int tongShadingEnabledLoc();
+    int toonShadingEnabledLoc();
+    int renderPurposeLoc();
+    int toonEdgeEnabledLoc();
+    int screenWidthLoc();
+    int screenHeightLoc();
+    int toonNormalMapIdLoc();
+    int toonDepthMapIdLoc();
     bool isCoreProfile();
     static const QString &loadShaderSource(const QString &name);
 private:
@@ -52,7 +58,13 @@ private:
     int m_environmentIrradianceMapEnabledLoc = 0;
     int m_environmentSpecularMapIdLoc = 0;
     int m_environmentSpecularMapEnabledLoc = 0;
-    int m_tongShadingEnabledLoc = 0;
+    int m_toonShadingEnabledLoc = 0;
+    int m_renderPurposeLoc = 0;
+    int m_toonEdgeEnabledLoc = 0;
+    int m_screenWidthLoc = 0;
+    int m_screenHeightLoc = 0;
+    int m_toonNormalMapIdLoc = 0;
+    int m_toonDepthMapIdLoc = 0;
 };
 
 #endif

src/modelwidget.cpp

@@ -46,13 +46,18 @@ ModelWidget::ModelWidget(QWidget *parent) :
         setFormat(fmt);
     }
     setContextMenuPolicy(Qt::CustomContextMenu);
+    
+    m_widthInPixels = width() * window()->devicePixelRatio();
+	m_heightInPixels = height() * window()->devicePixelRatio();
+	
     zoom(200);
     
-    connect(&Preferences::instance(), &Preferences::tongShadingChanged, this, &ModelWidget::reRender);
+    connect(&Preferences::instance(), &Preferences::toonShadingChanged, this, &ModelWidget::reRender);
 }
 
 void ModelWidget::reRender()
 {
+    emit renderParametersChanged();
     update();
 }
 
@@ -82,6 +87,7 @@ void ModelWidget::setXRotation(int angle)
     if (angle != m_xRot) {
         m_xRot = angle;
         emit xRotationChanged(angle);
+        emit renderParametersChanged();
         update();
     }
 }
@@ -92,6 +98,7 @@ void ModelWidget::setYRotation(int angle)
     if (angle != m_yRot) {
         m_yRot = angle;
         emit yRotationChanged(angle);
+        emit renderParametersChanged();
         update();
     }
 }
@@ -102,10 +109,16 @@ void ModelWidget::setZRotation(int angle)
     if (angle != m_zRot) {
         m_zRot = angle;
         emit zRotationChanged(angle);
+        emit renderParametersChanged();
         update();
     }
 }
 
+MeshLoader *ModelWidget::fetchCurrentMesh()
+{
+    return m_meshBinder.fetchCurrentMesh();
+}
+
 void ModelWidget::cleanup()
 {
     if (m_program == nullptr)
@@ -141,7 +154,7 @@ void ModelWidget::initializeGL()
     if (nullptr != versionString &&
             '\0' != versionString[0] &&
             0 == strstr(versionString, "Mesa")) {
-        isCoreProfile = QSurfaceFormat::defaultFormat().profile() == QSurfaceFormat::CoreProfile;
+        isCoreProfile = format().profile() == QSurfaceFormat::CoreProfile;
     }
         
     m_program = new ModelShaderProgram(isCoreProfile);
@@ -174,6 +187,7 @@ void ModelWidget::paintGL()
 #ifdef GL_LINE_SMOOTH
     glEnable(GL_LINE_SMOOTH);
 #endif
+	glViewport(0, 0, m_widthInPixels, m_heightInPixels);
 
     m_world.setToIdentity();
     m_world.rotate(m_xRot / 16.0f, 1, 0, 0);
@@ -181,7 +195,7 @@ void ModelWidget::paintGL()
     m_world.rotate(m_zRot / 16.0f, 0, 0, 1);
 
     m_program->bind();
-    m_program->setUniformValue(m_program->tongShadingEnabledLoc(), Preferences::instance().tongShading() ? 1 : 0);
+    m_program->setUniformValue(m_program->toonShadingEnabledLoc(), Preferences::instance().toonShading() ? 1 : 0);
     m_program->setUniformValue(m_program->projectionMatrixLoc(), m_projection);
     m_program->setUniformValue(m_program->modelMatrixLoc(), m_world);
     QMatrix3x3 normalMatrix = m_world.normalMatrix();
@@ -189,6 +203,13 @@ void ModelWidget::paintGL()
     m_program->setUniformValue(m_program->viewMatrixLoc(), m_camera);
     m_program->setUniformValue(m_program->textureEnabledLoc(), 0);
     m_program->setUniformValue(m_program->normalMapEnabledLoc(), 0);
+    m_program->setUniformValue(m_program->renderPurposeLoc(), 0);
+    
+    m_program->setUniformValue(m_program->toonEdgeEnabledLoc(), 0);
+    m_program->setUniformValue(m_program->screenWidthLoc(), (GLfloat)m_widthInPixels);
+    m_program->setUniformValue(m_program->screenHeightLoc(), (GLfloat)m_heightInPixels);
+    m_program->setUniformValue(m_program->toonNormalMapIdLoc(), 0);
+    m_program->setUniformValue(m_program->toonDepthMapIdLoc(), 0);
     
     if (m_mousePickingEnabled && !m_mousePickTargetPositionInModelSpace.isNull()) {
         m_program->setUniformValue(m_program->mousePickEnabledLoc(), 1);
@@ -207,8 +228,11 @@ void ModelWidget::paintGL()
 
 void ModelWidget::resizeGL(int w, int h)
 {
+	m_widthInPixels = w * window()->devicePixelRatio();
+	m_heightInPixels = h * window()->devicePixelRatio();
     m_projection.setToIdentity();
     m_projection.perspective(45.0f, GLfloat(w) / h, 0.01f, 100.0f);
+    emit renderParametersChanged();
 }
 
 std::pair<QVector3D, QVector3D> ModelWidget::screenPositionToMouseRay(const QPoint &screenPosition)
@@ -383,6 +407,7 @@ void ModelWidget::zoom(float delta)
         }
     }
     setGeometry(geometry().marginsAdded(margins));
+    emit renderParametersChanged();
 }
 
 void ModelWidget::setMousePickTargetPositionInModelSpace(QVector3D position)
@@ -400,9 +425,31 @@ void ModelWidget::setMousePickRadius(float radius)
 void ModelWidget::updateMesh(MeshLoader *mesh)
 {
     m_meshBinder.updateMesh(mesh);
+    emit renderParametersChanged();
     update();
 }
 
+void ModelWidget::fetchCurrentToonNormalAndDepthMaps(QImage *normalMap, QImage *depthMap)
+{
+    m_meshBinder.fetchCurrentToonNormalAndDepthMaps(normalMap, depthMap);
+}
+
+void ModelWidget::updateToonNormalAndDepthMaps(QImage *normalMap, QImage *depthMap)
+{
+    m_meshBinder.updateToonNormalAndDepthMaps(normalMap, depthMap);
+    update();
+}
+
+int ModelWidget::widthInPixels()
+{
+	return m_widthInPixels;
+}
+
+int ModelWidget::heightInPixels()
+{
+	return m_heightInPixels;
+}
+
 void ModelWidget::enableMove(bool enabled)
 {
     m_moveEnabled = enabled;

src/modelwidget.h

@@ -23,6 +23,7 @@ signals:
     void mousePressed();
     void mouseReleased();
     void addMouseRadius(float radius);
+    void renderParametersChanged();
 public:
     ModelWidget(QWidget *parent = 0);
     ~ModelWidget();
@@ -34,6 +35,7 @@ public:
     {
         m_transparent = t;
     }
+    MeshLoader *fetchCurrentMesh();
     void updateMesh(MeshLoader *mesh);
     void setGraphicsFunctions(SkeletonGraphicsFunctions *graphicsFunctions);
     void toggleWireframe();
@@ -48,6 +50,10 @@ public:
     bool inputWheelEventFromOtherWidget(QWheelEvent *event);
     bool inputMouseReleaseEventFromOtherWidget(QMouseEvent *event);
     QPoint convertInputPosFromOtherWidget(QMouseEvent *event);
+    void fetchCurrentToonNormalAndDepthMaps(QImage *normalMap, QImage *depthMap);
+    void updateToonNormalAndDepthMaps(QImage *normalMap, QImage *depthMap);
+    int widthInPixels();
+    int heightInPixels();
 public slots:
     void setXRotation(int angle);
     void setYRotation(int angle);
@@ -98,6 +104,8 @@ private:
     QRect m_moveStartGeometry;
     int m_modelInitialHeight = 0;
     QTimer *m_rotationTimer = nullptr;
+    int m_widthInPixels = 0;
+    int m_heightInPixels = 0;
     std::pair<QVector3D, QVector3D> screenPositionToMouseRay(const QPoint &screenPosition);
 public:
     static int m_defaultXRotation;

src/normalanddepthmapsgenerator.cpp

@@ -0,0 +1,70 @@
+#include "normalanddepthmapsgenerator.h"
+
+NormalAndDepthMapsGenerator::NormalAndDepthMapsGenerator(ModelWidget *modelWidget)
+{
+    m_viewPortSize = QSize(modelWidget->widthInPixels(),
+		modelWidget->heightInPixels());
+    m_normalMapRender = createOfflineRender(modelWidget, 1);
+    m_depthMapRender = createOfflineRender(modelWidget, 2);
+}
+
+void NormalAndDepthMapsGenerator::updateMesh(MeshLoader *mesh)
+{
+    if (nullptr == mesh) {
+        m_normalMapRender->updateMesh(nullptr);
+        m_depthMapRender->updateMesh(nullptr);
+        return;
+    }
+    m_normalMapRender->updateMesh(new MeshLoader(*mesh));
+    m_depthMapRender->updateMesh(mesh);
+}
+
+void NormalAndDepthMapsGenerator::setRenderThread(QThread *thread)
+{
+    //m_normalMapRender->setRenderThread(thread);
+    //m_depthMapRender->setRenderThread(thread);
+}
+
+ModelOfflineRender *NormalAndDepthMapsGenerator::createOfflineRender(ModelWidget *modelWidget, int purpose)
+{
+    ModelOfflineRender *offlineRender = new ModelOfflineRender(modelWidget->format());
+    offlineRender->setXRotation(modelWidget->xRot());
+    offlineRender->setYRotation(modelWidget->yRot());
+    offlineRender->setZRotation(modelWidget->zRot());
+    offlineRender->setRenderPurpose(purpose);
+    return offlineRender;
+}
+
+NormalAndDepthMapsGenerator::~NormalAndDepthMapsGenerator()
+{
+    delete m_normalMapRender;
+    delete m_depthMapRender;
+    delete m_normalMap;
+    delete m_depthMap;
+}
+
+void NormalAndDepthMapsGenerator::generate()
+{
+    m_normalMap = new QImage(m_normalMapRender->toImage(m_viewPortSize));
+    m_depthMap = new QImage(m_depthMapRender->toImage(m_viewPortSize));
+}
+
+void NormalAndDepthMapsGenerator::process()
+{
+    generate();
+    emit finished();
+}
+
+QImage *NormalAndDepthMapsGenerator::takeNormalMap()
+{
+    QImage *normalMap = m_normalMap;
+    m_normalMap = nullptr;
+    return normalMap;
+}
+
+QImage *NormalAndDepthMapsGenerator::takeDepthMap()
+{
+    QImage *depthMap = m_depthMap;
+    m_depthMap = nullptr;
+    return depthMap;
+}

src/normalanddepthmapsgenerator.h

@@ -0,0 +1,34 @@
+#ifndef DUST3D_NORMAL_AND_DEPTH_MAPS_GENERATOR_H
+#define DUST3D_NORMAL_AND_DEPTH_MAPS_GENERATOR_H
+#include <QObject>
+#include <QImage>
+#include "modelwidget.h"
+#include "modelofflinerender.h"
+#include "meshloader.h"
+
+class NormalAndDepthMapsGenerator : public QObject
+{
+    Q_OBJECT
+public:
+    NormalAndDepthMapsGenerator(ModelWidget *modelWidget);
+    void updateMesh(MeshLoader *mesh);
+    void setRenderThread(QThread *thread);
+    ~NormalAndDepthMapsGenerator();
+    QImage *takeNormalMap();
+    QImage *takeDepthMap();
+signals:
+    void finished();
+public slots:
+    void process();
+private:
+    ModelOfflineRender *m_normalMapRender = nullptr;
+    ModelOfflineRender *m_depthMapRender = nullptr;
+    QSize m_viewPortSize;
+    QImage *m_normalMap = nullptr;
+    QImage *m_depthMap = nullptr;
+    
+    ModelOfflineRender *createOfflineRender(ModelWidget *modelWidget, int purpose);
+    void generate();
+};
+
+#endif

src/preferences.cpp

@@ -14,8 +14,8 @@ void Preferences::loadDefault()
 {
     m_componentCombineMode = CombineMode::Normal;
     m_partColor = Qt::white;
-    m_flatShading = true;
+    m_flatShading = false;
-    m_tongShading = false;
+    m_toonShading = false;
     m_textureSize = 1024;
 }
 
@@ -40,11 +40,11 @@ Preferences::Preferences()
             m_flatShading = isTrueValueString(value);
     }
     {
-        QString value = m_settings.value("tongShading").toString();
+        QString value = m_settings.value("toonShading").toString();
         if (value.isEmpty())
-            m_tongShading = false;
+            m_toonShading = false;
         else
-            m_tongShading = isTrueValueString(value);
+            m_toonShading = isTrueValueString(value);
     }
     {
         QString value = m_settings.value("textureSize").toString();
@@ -68,9 +68,9 @@ bool Preferences::flatShading() const
     return m_flatShading;
 }
 
-bool Preferences::tongShading() const
+bool Preferences::toonShading() const
 {
-    return m_tongShading;
+    return m_toonShading;
 }
 
 int Preferences::textureSize() const
@@ -105,13 +105,13 @@ void Preferences::setFlatShading(bool flatShading)
     emit flatShadingChanged();
 }
 
-void Preferences::setTongShading(bool tongShading)
+void Preferences::setToonShading(bool toonShading)
 {
-    if (m_tongShading == tongShading)
+    if (m_toonShading == toonShading)
         return;
-    m_tongShading = tongShading;
+    m_toonShading = toonShading;
-    m_settings.setValue("tongShading", tongShading ? "true" : "false");
+    m_settings.setValue("toonShading", toonShading ? "true" : "false");
-    emit tongShadingChanged();
+    emit toonShadingChanged();
 }
 
 void Preferences::setTextureSize(int textureSize)
@@ -140,6 +140,6 @@ void Preferences::reset()
     emit componentCombineModeChanged();
     emit partColorChanged();
     emit flatShadingChanged();
-    emit tongShadingChanged();
+    emit toonShadingChanged();
     emit textureSizeChanged();
 }

src/preferences.h

@@ -14,7 +14,7 @@ public:
     CombineMode componentCombineMode() const;
     const QColor &partColor() const;
     bool flatShading() const;
-    bool tongShading() const;
+    bool toonShading() const;
     QSize documentWindowSize() const;
     void setDocumentWindowSize(const QSize&);
     int textureSize() const;
@@ -22,20 +22,20 @@ signals:
     void componentCombineModeChanged();
     void partColorChanged();
     void flatShadingChanged();
-    void tongShadingChanged();
+    void toonShadingChanged();
     void textureSizeChanged();
 public slots:
     void setComponentCombineMode(CombineMode mode);
     void setPartColor(const QColor &color);
     void setFlatShading(bool flatShading);
-    void setTongShading(bool tongShading);
+    void setToonShading(bool toonShading);
     void setTextureSize(int textureSize);
     void reset();
 private:
     CombineMode m_componentCombineMode;
     QColor m_partColor;
     bool m_flatShading;
-    bool m_tongShading;
+    bool m_toonShading;
     QSettings m_settings;
     int m_textureSize;
 private:

src/preferenceswidget.cpp

@@ -65,10 +65,10 @@ PreferencesWidget::PreferencesWidget(const Document *document, QWidget *parent)
         Preferences::instance().setFlatShading(flatShadingBox->isChecked());
     });
     
-    QCheckBox *tongShadingBox = new QCheckBox();
+    QCheckBox *toonShadingBox = new QCheckBox();
-    Theme::initCheckbox(tongShadingBox);
+    Theme::initCheckbox(toonShadingBox);
-    connect(tongShadingBox, &QCheckBox::stateChanged, this, [=]() {
+    connect(toonShadingBox, &QCheckBox::stateChanged, this, [=]() {
-        Preferences::instance().setTongShading(tongShadingBox->isChecked());
+        Preferences::instance().setToonShading(toonShadingBox->isChecked());
     });
     
     QComboBox *textureSizeSelectBox = new QComboBox;
@@ -84,14 +84,14 @@ PreferencesWidget::PreferencesWidget(const Document *document, QWidget *parent)
     formLayout->addRow(tr("Part color:"), colorLayout);
     formLayout->addRow(tr("Combine mode:"), combineModeSelectBox);
     formLayout->addRow(tr("Flat shading:"), flatShadingBox);
-    formLayout->addRow(tr("Tong shading:"), tongShadingBox);
+    formLayout->addRow(tr("Toon shading:"), toonShadingBox);
     formLayout->addRow(tr("Texture size:"), textureSizeSelectBox);
     
     auto loadFromPreferences = [=]() {
         updatePickButtonColor();
         combineModeSelectBox->setCurrentIndex((int)Preferences::instance().componentCombineMode());
         flatShadingBox->setChecked(Preferences::instance().flatShading());
-        tongShadingBox->setChecked(Preferences::instance().tongShading());
+        toonShadingBox->setChecked(Preferences::instance().toonShading());
         textureSizeSelectBox->setCurrentIndex(
             textureSizeSelectBox->findText(QString::number(Preferences::instance().textureSize()))
         );