diff --git a/application/shaders/model.frag b/application/shaders/model.frag
index df426246..f2cfdb0a 100644
--- a/application/shaders/model.frag
+++ b/application/shaders/model.frag
@@ -1,13 +1,23 @@
 #version 110
-uniform vec3 eyePosition;
 uniform sampler2D environmentIrradianceMapId[6];
 uniform sampler2D environmentSpecularMapId[6];
+uniform sampler2D textureId;
+uniform int textureEnabled;
+uniform sampler2D normalMapId;
+uniform int normalMapEnabled;
+uniform sampler2D metalnessRoughnessAoMapId;
+uniform int metalnessMapEnabled;
+uniform int roughnessMapEnabled;
+uniform int aoMapEnabled;
+uniform vec3 eyePosition;
 varying vec3 pointPosition;
 varying vec3 pointNormal;
 varying vec3 pointColor;
+varying vec2 pointTexCoord;
 varying float pointAlpha;
 varying float pointMetalness;
 varying float pointRoughness;
+varying mat3 pointTBN;
 
 const float PI = 3.1415926;
 
@@ -45,9 +55,34 @@ vec4 texturesAsCube(in sampler2D maps[6], in vec3 direction)
     vec2 st;
     cubemap(direction, texId, st);
     vec4 color = vec4(0);
-    for (int i = 0; i < 6; ++i) {
-        vec4 side = texture2D(maps[i], st);
-        float select = step(float(i) - 0.5, texId) * step(texId, float(i) + 0.5);
+    {
+        vec4 side = texture2D(maps[0], st);
+        float select = step(0.0 - 0.5, texId) * step(texId, 0.0 + 0.5);
+        color = mix(color, side, select);
+    }
+    {
+        vec4 side = texture2D(maps[1], st);
+        float select = step(1.0 - 0.5, texId) * step(texId, 1.0 + 0.5);
+        color = mix(color, side, select);
+    }
+    {
+        vec4 side = texture2D(maps[2], st);
+        float select = step(2.0 - 0.5, texId) * step(texId, 2.0 + 0.5);
+        color = mix(color, side, select);
+    }
+    {
+        vec4 side = texture2D(maps[3], st);
+        float select = step(3.0 - 0.5, texId) * step(texId, 3.0 + 0.5);
+        color = mix(color, side, select);
+    }
+    {
+        vec4 side = texture2D(maps[4], st);
+        float select = step(4.0 - 0.5, texId) * step(texId, 4.0 + 0.5);
+        color = mix(color, side, select);
+    }
+    {
+        vec4 side = texture2D(maps[5], st);
+        float select = step(5.0 - 0.5, texId) * step(texId, 5.0 + 0.5);
         color = mix(color, side, select);
     }
     return color;
@@ -55,23 +90,48 @@ vec4 texturesAsCube(in sampler2D maps[6], in vec3 direction)
 
 void main()
 {
-    vec3 n = pointNormal;
+    vec3 color = pointColor;
+    float alpha = pointAlpha;
+    if (1 == textureEnabled) {
+        vec4 textColor = texture2D(textureId, pointTexCoord);
+        color = textColor.rgb;
+        alpha = textColor.a;
+    }
+    vec3 normal = pointNormal;
+    if (1 == normalMapEnabled) {
+        normal = texture2D(normalMapId, pointTexCoord).rgb;
+        normal = pointTBN * normalize(normal * 2.0 - 1.0);
+    }
+    float metalness = pointMetalness;
+    if (1 == metalnessMapEnabled) {
+        metalness = texture2D(metalnessRoughnessAoMapId, pointTexCoord).b;
+    }
+    float roughness = pointRoughness;
+    if (1 == roughnessMapEnabled) {
+        roughness = texture2D(metalnessRoughnessAoMapId, pointTexCoord).g;
+    }
+    float ambientOcclusion = 1.0;
+    if (1 == aoMapEnabled) {
+        ambientOcclusion = texture2D(metalnessRoughnessAoMapId, pointTexCoord).r;
+    }
+
+    vec3 n = normal;
     vec3 v = normalize(eyePosition - pointPosition);
     vec3 r = reflect(-v, n);
 
     float NoV = abs(dot(n, v)) + 1e-5;
 
     vec3 irradiance = texturesAsCube(environmentIrradianceMapId, r).rgb;
-    vec3 diffuse = irradiance * (1.0 - pointMetalness) * pointColor;
+    vec3 diffuse = irradiance * (1.0 - metalness) * pointColor;
 
-    vec3 f0 = mix(vec3(0.04), pointColor, pointMetalness);
-    vec3 fresnelFactor = fresnelSchlickRoughness(NoV, f0, pointRoughness);
+    vec3 f0 = mix(vec3(0.04), pointColor, metalness);
+    vec3 fresnelFactor = fresnelSchlickRoughness(NoV, f0, roughness);
     vec3 specular = fresnelFactor * texturesAsCube(environmentSpecularMapId, r).rgb;
 
-    vec3 color = diffuse + specular;
+    color = (diffuse + specular) * ambientOcclusion;
 
     color = color / (color + vec3(1.0));
     color = pow(color, vec3(1.0/2.2));
 
-    gl_FragColor = vec4(color, pointAlpha);
+    gl_FragColor = vec4(color, alpha);
 }
diff --git a/application/shaders/model.vert b/application/shaders/model.vert
index 825e28e2..a75e5305 100644
--- a/application/shaders/model.vert
+++ b/application/shaders/model.vert
@@ -8,24 +8,43 @@ attribute float roughness;
 attribute vec3 tangent;
 attribute float alpha;
 uniform mat4 modelMatrix;
+uniform mat3 normalMatrix;
 uniform mat4 viewMatrix;
 uniform mat4 projectionMatrix;
-uniform vec3 eyePosition;
+uniform int normalMapEnabled;
 varying vec3 pointPosition;
 varying vec3 pointNormal;
 varying vec3 pointColor;
+varying vec2 pointTexCoord;
 varying float pointAlpha;
 varying float pointMetalness;
 varying float pointRoughness;
+varying mat3 pointTBN;
+
+mat3 transpose(mat3 m) 
+{
+    return mat3(m[0][0], m[1][0], m[2][0],
+                m[0][1], m[1][1], m[2][1],
+                m[0][2], m[1][2], m[2][2]);
+}
 
 void main()
 {
     pointPosition = (modelMatrix * vertex).xyz;
     pointNormal = normalize((modelMatrix * vec4(normal, 1.0)).xyz);
     pointColor = color;
+    pointTexCoord = texCoord;
     pointAlpha = alpha;
     pointMetalness = metalness;
     pointRoughness = roughness;
 
     gl_Position = projectionMatrix * viewMatrix * vec4(pointPosition, 1.0);
+
+    if (1 == normalMapEnabled) {
+        vec3 T = normalize(normalMatrix * tangent);
+        vec3 N = normalize(normalMatrix * normal);
+        T = normalize(T - dot(T, N) * N);
+        vec3 B = cross(N, T);
+        pointTBN = mat3(T, B, N);
+    }
 }
diff --git a/application/shaders/model_core.frag b/application/shaders/model_core.frag
index 1bef2315..be037e22 100644
--- a/application/shaders/model_core.frag
+++ b/application/shaders/model_core.frag
@@ -1,13 +1,23 @@
 #version 330
-uniform vec3 eyePosition;
 uniform samplerCube environmentIrradianceMapId;
 uniform samplerCube environmentSpecularMapId;
+uniform sampler2D textureId;
+uniform int textureEnabled;
+uniform sampler2D normalMapId;
+uniform int normalMapEnabled;
+uniform sampler2D metalnessRoughnessAoMapId;
+uniform int metalnessMapEnabled;
+uniform int roughnessMapEnabled;
+uniform int aoMapEnabled;
+uniform vec3 eyePosition;
 in vec3 pointPosition;
 in vec3 pointNormal;
 in vec3 pointColor;
+in vec2 pointTexCoord;
 in float pointAlpha;
 in float pointMetalness;
 in float pointRoughness;
+in mat3 pointTBN;
 out vec4 fragColor;
 
 const float PI = 3.1415926;
@@ -19,23 +29,48 @@ vec3 fresnelSchlickRoughness(float NoV, vec3 f0, float roughness)
 
 void main()
 {
-    vec3 n = pointNormal;
+    vec3 color = pointColor;
+    float alpha = pointAlpha;
+    if (1 == textureEnabled) {
+        vec4 textColor = texture(textureId, pointTexCoord);
+        color = textColor.rgb;
+        alpha = textColor.a;
+    }
+    vec3 normal = pointNormal;
+    if (1 == normalMapEnabled) {
+        normal = texture(normalMapId, pointTexCoord).rgb;
+        normal = pointTBN * normalize(normal * 2.0 - 1.0);
+    }
+    float metalness = pointMetalness;
+    if (1 == metalnessMapEnabled) {
+        metalness = texture(metalnessRoughnessAoMapId, pointTexCoord).b;
+    }
+    float roughness = pointRoughness;
+    if (1 == roughnessMapEnabled) {
+        roughness = texture(metalnessRoughnessAoMapId, pointTexCoord).g;
+    }
+    float ambientOcclusion = 1.0;
+    if (1 == aoMapEnabled) {
+        ambientOcclusion = texture(metalnessRoughnessAoMapId, pointTexCoord).r;
+    }
+
+    vec3 n = normal;
     vec3 v = normalize(eyePosition - pointPosition);
     vec3 r = reflect(-v, n);
 
     float NoV = abs(dot(n, v)) + 1e-5;
 
     vec3 irradiance = texture(environmentIrradianceMapId, r).rgb;
-    vec3 diffuse = irradiance * (1.0 - pointMetalness) * pointColor;
+    vec3 diffuse = irradiance * (1.0 - metalness) * pointColor;
 
-    vec3 f0 = mix(vec3(0.04), pointColor, pointMetalness);
-    vec3 fresnelFactor = fresnelSchlickRoughness(NoV, f0, pointRoughness);
+    vec3 f0 = mix(vec3(0.04), pointColor, metalness);
+    vec3 fresnelFactor = fresnelSchlickRoughness(NoV, f0, roughness);
     vec3 specular = fresnelFactor * texture(environmentSpecularMapId, r, 0.0).rgb;
 
-    vec3 color = diffuse + specular;
+    color = (diffuse + specular) * ambientOcclusion;
 
     color = color / (color + vec3(1.0));
     color = pow(color, vec3(1.0/2.2));
 
-    fragColor = vec4(color, pointAlpha);
+    fragColor = vec4(color, alpha);
 }
\ No newline at end of file
diff --git a/application/shaders/model_core.vert b/application/shaders/model_core.vert
index 3f54e4e4..055b7b55 100644
--- a/application/shaders/model_core.vert
+++ b/application/shaders/model_core.vert
@@ -8,24 +8,43 @@ layout(location = 5) in float roughness;
 layout(location = 6) in vec3 tangent;
 layout(location = 7) in float alpha;
 uniform mat4 modelMatrix;
+uniform mat3 normalMatrix;
 uniform mat4 viewMatrix;
 uniform mat4 projectionMatrix;
-uniform vec3 eyePosition;
+uniform int normalMapEnabled;
 out vec3 pointPosition;
 out vec3 pointNormal;
 out vec3 pointColor;
+out vec2 pointTexCoord;
 out float pointAlpha;
 out float pointMetalness;
 out float pointRoughness;
+out mat3 pointTBN;
+
+mat3 transpose(mat3 m) 
+{
+    return mat3(m[0][0], m[1][0], m[2][0],
+                m[0][1], m[1][1], m[2][1],
+                m[0][2], m[1][2], m[2][2]);
+}
 
 void main()
 {
     pointPosition = (modelMatrix * vertex).xyz;
     pointNormal = normalize((modelMatrix * vec4(normal, 1.0)).xyz);
     pointColor = color;
+    pointTexCoord = texCoord;
     pointAlpha = alpha;
     pointMetalness = metalness;
     pointRoughness = roughness;
 
     gl_Position = projectionMatrix * viewMatrix * vec4(pointPosition, 1.0);
+
+    if (1 == normalMapEnabled) {
+        vec3 T = normalize(normalMatrix * tangent);
+        vec3 N = normalize(normalMatrix * normal);
+        T = normalize(T - dot(T, N) * N);
+        vec3 B = cross(N, T);
+        pointTBN = mat3(T, B, N);
+    }
 }
\ No newline at end of file
diff --git a/application/sources/document.h b/application/sources/document.h
index 2cda209e..9c226356 100644
--- a/application/sources/document.h
+++ b/application/sources/document.h
@@ -80,7 +80,6 @@ signals:
     void turnaroundChanged();
     void editModeChanged();
     void resultTextureChanged();
-    void resultColorTextureChanged();
     void postProcessedResultChanged();
     void partSubdivStateChanged(dust3d::Uuid partId);
     void partXmirrorStateChanged(dust3d::Uuid partId);
diff --git a/application/sources/document_window.cc b/application/sources/document_window.cc
index c54c8e74..d8e67609 100644
--- a/application/sources/document_window.cc
+++ b/application/sources/document_window.cc
@@ -251,7 +251,6 @@ DocumentWindow::DocumentWindow()
     m_modelRenderWidget->setMoveAndZoomByWindow(false);
     m_modelRenderWidget->move(0, 0);
     m_modelRenderWidget->setAttribute(Qt::WA_TransparentForMouseEvents);
-    m_modelRenderWidget->enableEnvironmentLight();
     m_modelRenderWidget->toggleWireframe();
     m_modelRenderWidget->disableCullFace();
     m_modelRenderWidget->setEyePosition(QVector3D(0.0, 0.0, -4.0));
@@ -726,10 +725,6 @@ DocumentWindow::DocumentWindow()
             resultTextureMesh->removeColor();
         m_modelRenderWidget->updateMesh(resultTextureMesh);
     });
-    connect(m_document, &Document::resultColorTextureChanged, [=]() {
-        if (nullptr != m_document->textureImage)
-            m_modelRenderWidget->updateColorTexture(new QImage(*m_document->textureImage));
-    });
     
     connect(m_document, &Document::resultMeshChanged, [=]() {
         auto resultMesh = m_document->takeResultMesh();
diff --git a/application/sources/main.cc b/application/sources/main.cc
index f7423862..60b06c61 100644
--- a/application/sources/main.cc
+++ b/application/sources/main.cc
@@ -25,7 +25,7 @@ int main(int argc, char *argv[])
     //freopen("dust3d.log", "w", stdout);
     //setvbuf(stdout, 0, _IONBF, 0);
     
-    DocumentWindow *firstWindow = DocumentWindow::createDocumentWindow();
+    DocumentWindow::createDocumentWindow();
     
     return app.exec();
 }
diff --git a/application/sources/material_edit_widget.cc b/application/sources/material_edit_widget.cc
index 4ddda585..27870002 100644
--- a/application/sources/material_edit_widget.cc
+++ b/application/sources/material_edit_widget.cc
@@ -50,7 +50,6 @@ MaterialEditWidget::MaterialEditWidget(const Document *document, QWidget *parent
     m_previewWidget->setMinimumSize(128, 128);
     m_previewWidget->resize(512, 512);
     m_previewWidget->move(-128, -128);
-    m_previewWidget->enableEnvironmentLight();
     m_previewWidget->setNotGraphics(true);
     
     QFont nameFont;
diff --git a/application/sources/material_widget.cc b/application/sources/material_widget.cc
index 54a1c185..d3803875 100644
--- a/application/sources/material_widget.cc
+++ b/application/sources/material_widget.cc
@@ -13,7 +13,6 @@ MaterialWidget::MaterialWidget(const Document *document, dust3d::Uuid materialId
     m_previewWidget->setFixedSize(Theme::materialPreviewImageSize, Theme::materialPreviewImageSize);
     m_previewWidget->enableMove(false);
     m_previewWidget->enableZoom(false);
-    m_previewWidget->enableEnvironmentLight();
 
     m_nameLabel = new QLabel;
     m_nameLabel->setAlignment(Qt::AlignCenter);
diff --git a/application/sources/model_mesh.cc b/application/sources/model_mesh.cc
index bbeb1ea9..fcfb64ee 100644
--- a/application/sources/model_mesh.cc
+++ b/application/sources/model_mesh.cc
@@ -26,8 +26,8 @@ ModelMesh::ModelMesh(const ModelMesh &mesh) :
     if (nullptr != mesh.m_normalMapImage) {
         this->m_normalMapImage = new QImage(*mesh.m_normalMapImage);
     }
-    if (nullptr != mesh.m_metalnessRoughnessAmbientOcclusionImage) {
-        this->m_metalnessRoughnessAmbientOcclusionImage = new QImage(*mesh.m_metalnessRoughnessAmbientOcclusionImage);
+    if (nullptr != mesh.m_metalnessRoughnessAmbientOcclusionMapImage) {
+        this->m_metalnessRoughnessAmbientOcclusionMapImage = new QImage(*mesh.m_metalnessRoughnessAmbientOcclusionMapImage);
         this->m_hasMetalnessInImage = mesh.m_hasMetalnessInImage;
         this->m_hasRoughnessInImage = mesh.m_hasRoughnessInImage;
         this->m_hasAmbientOcclusionInImage = mesh.m_hasAmbientOcclusionInImage;
@@ -46,8 +46,8 @@ void ModelMesh::removeColor()
     delete this->m_normalMapImage;
     this->m_normalMapImage = nullptr;
     
-    delete this->m_metalnessRoughnessAmbientOcclusionImage;
-    this->m_metalnessRoughnessAmbientOcclusionImage = nullptr;
+    delete this->m_metalnessRoughnessAmbientOcclusionMapImage;
+    this->m_metalnessRoughnessAmbientOcclusionMapImage = nullptr;
     
     this->m_hasMetalnessInImage = false;
     this->m_hasRoughnessInImage = false;
@@ -185,7 +185,7 @@ ModelMesh::~ModelMesh()
     m_triangleVertexCount = 0;
     delete m_textureImage;
     delete m_normalMapImage;
-    delete m_metalnessRoughnessAmbientOcclusionImage;
+    delete m_metalnessRoughnessAmbientOcclusionMapImage;
 }
 
 const std::vector<dust3d::Vector3> &ModelMesh::vertices()
@@ -223,6 +223,13 @@ const QImage *ModelMesh::textureImage()
     return m_textureImage;
 }
 
+QImage *ModelMesh::takeTextureImage()
+{
+    auto image = m_textureImage;
+    m_textureImage = nullptr;
+    return image;
+}
+
 void ModelMesh::setNormalMapImage(QImage *normalMapImage)
 {
     m_normalMapImage = normalMapImage;
@@ -233,14 +240,28 @@ const QImage *ModelMesh::normalMapImage()
     return m_normalMapImage;
 }
 
-const QImage *ModelMesh::metalnessRoughnessAmbientOcclusionImage()
+QImage *ModelMesh::takeNormalMapImage()
 {
-    return m_metalnessRoughnessAmbientOcclusionImage;
+    auto image = m_normalMapImage;
+    m_normalMapImage = nullptr;
+    return image;
 }
 
-void ModelMesh::setMetalnessRoughnessAmbientOcclusionImage(QImage *image)
+const QImage *ModelMesh::metalnessRoughnessAmbientOcclusionMapImage()
 {
-    m_metalnessRoughnessAmbientOcclusionImage = image;
+    return m_metalnessRoughnessAmbientOcclusionMapImage;
+}
+
+QImage *ModelMesh::takeMetalnessRoughnessAmbientOcclusionMapImage()
+{
+    auto image = m_metalnessRoughnessAmbientOcclusionMapImage;
+    m_metalnessRoughnessAmbientOcclusionMapImage = nullptr;
+    return image;
+}
+
+void ModelMesh::setMetalnessRoughnessAmbientOcclusionMapImage(QImage *image)
+{
+    m_metalnessRoughnessAmbientOcclusionMapImage = image;
 }
 
 bool ModelMesh::hasMetalnessInImage()
diff --git a/application/sources/model_mesh.h b/application/sources/model_mesh.h
index 9da6986d..9f60d494 100644
--- a/application/sources/model_mesh.h
+++ b/application/sources/model_mesh.h
@@ -25,19 +25,18 @@ public:
     ~ModelMesh();
     ModelOpenGLVertex *triangleVertices();
     int triangleVertexCount();
-    ModelOpenGLVertex *edgeVertices();
-    int edgeVertexCount();
-    ModelOpenGLVertex *toolVertices();
-    int toolVertexCount();
     const std::vector<dust3d::Vector3> &vertices();
     const std::vector<std::vector<size_t>> &faces();
     const std::vector<dust3d::Vector3> &triangulatedVertices();
     void setTextureImage(QImage *textureImage);
     const QImage *textureImage();
+    QImage *takeTextureImage();
     void setNormalMapImage(QImage *normalMapImage);
     const QImage *normalMapImage();
-    const QImage *metalnessRoughnessAmbientOcclusionImage();
-    void setMetalnessRoughnessAmbientOcclusionImage(QImage *image);
+    QImage *takeNormalMapImage();
+    const QImage *metalnessRoughnessAmbientOcclusionMapImage();
+    QImage *takeMetalnessRoughnessAmbientOcclusionMapImage();
+    void setMetalnessRoughnessAmbientOcclusionMapImage(QImage *image);
     bool hasMetalnessInImage();
     void setHasMetalnessInImage(bool hasInImage);
     bool hasRoughnessInImage();
@@ -60,7 +59,7 @@ private:
     std::vector<dust3d::Vector3> m_triangulatedVertices;
     QImage *m_textureImage = nullptr;
     QImage *m_normalMapImage = nullptr;
-    QImage *m_metalnessRoughnessAmbientOcclusionImage = nullptr;
+    QImage *m_metalnessRoughnessAmbientOcclusionMapImage = nullptr;
     bool m_hasMetalnessInImage = false;
     bool m_hasRoughnessInImage = false;
     bool m_hasAmbientOcclusionInImage = false;
diff --git a/application/sources/model_offscreen_render.cc b/application/sources/model_offscreen_render.cc
index 99ce8d0d..35c29681 100644
--- a/application/sources/model_offscreen_render.cc
+++ b/application/sources/model_offscreen_render.cc
@@ -120,15 +120,18 @@ QImage ModelOffscreenRender::toImage(const QSize &size)
     auto program = std::make_unique<ModelOpenGLProgram>();
     program->load(m_context->format().profile() == QSurfaceFormat::CoreProfile);
     program->bind();
-    program->bindEnvironment();
+    program->bindMaps();
 
     program->setUniformValue(program->getUniformLocationByName("eyePosition"), m_eyePosition);
     program->setUniformValue(program->getUniformLocationByName("projectionMatrix"), projection);
     program->setUniformValue(program->getUniformLocationByName("modelMatrix"), world);
+    program->setUniformValue(program->getUniformLocationByName("normalMatrix"), world.normalMatrix());
     program->setUniformValue(program->getUniformLocationByName("viewMatrix"), camera);
 
     object->draw();
 
+    program->releaseMaps();
+
     program->release();
 
     f->glFlush();
diff --git a/application/sources/model_opengl_program.cc b/application/sources/model_opengl_program.cc
index 9752cc38..24561dfe 100644
--- a/application/sources/model_opengl_program.cc
+++ b/application/sources/model_opengl_program.cc
@@ -1,5 +1,6 @@
 #include <QOpenGLFunctions>
 #include <QFile>
+#include <QMutexLocker>
 #include <dust3d/base/debug.h>
 #include "model_opengl_program.h"
 #include "dds_file.h"
@@ -29,6 +30,42 @@ bool ModelOpenGLProgram::isCoreProfile() const
     return m_isCoreProfile;
 }
 
+void ModelOpenGLProgram::updateTextureImage(std::unique_ptr<QImage> image)
+{
+    QMutexLocker lock(&m_imageMutex);
+    m_textureImage = std::move(image);
+    m_imageIsDirty = true;
+}
+
+void ModelOpenGLProgram::updateNormalMapImage(std::unique_ptr<QImage> image)
+{
+    QMutexLocker lock(&m_imageMutex);
+    m_normalMapImage = std::move(image);
+    m_imageIsDirty = true;
+}
+
+void ModelOpenGLProgram::updateMetalnessRoughnessAmbientOcclusionMapImage(std::unique_ptr<QImage> image,
+    bool hasMetalnessMap,
+    bool hasRoughnessMap,
+    bool hasAmbientOcclusionMap)
+{
+    QMutexLocker lock(&m_imageMutex);
+    m_metalnessRoughnessAmbientOcclusionMapImage = std::move(image);
+    m_hasMetalnessMap = hasMetalnessMap;
+    m_hasRoughnessMap = hasRoughnessMap;
+    m_hasAmbientOcclusionMap = hasAmbientOcclusionMap;
+    m_imageIsDirty = true;
+}
+
+void ModelOpenGLProgram::activeAndBindTexture(int location, QOpenGLTexture *texture)
+{
+    if (0 == texture->textureId()) {
+        dust3dDebug << "Expected texture with a bound id";
+        return;
+    }
+    texture->bind(location);
+}
+
 void ModelOpenGLProgram::load(bool isCoreProfile)
 {
     if (m_isLoaded)
@@ -54,8 +91,11 @@ void ModelOpenGLProgram::load(bool isCoreProfile)
     m_isLoaded = true;
 }
 
-void ModelOpenGLProgram::bindEnvironment()
+void ModelOpenGLProgram::bindMaps()
 {
+    int bindLocation = 1;
+
+    // Bind environment maps
     if (m_isCoreProfile) {
         if (!m_environmentIrradianceMap) {
             DdsFileReader irradianceFile(":/resources/cedar_bridge_irradiance.dds");
@@ -66,11 +106,13 @@ void ModelOpenGLProgram::bindEnvironment()
             m_environmentSpecularMap.reset(irradianceFile.createOpenGLTexture());
         }
         
-        m_environmentIrradianceMap->bind(0);
-        setUniformValue(getUniformLocationByName("environmentIrradianceMapId"), 0);
+        bindLocation++;
+        activeAndBindTexture(bindLocation, m_environmentIrradianceMap.get());
+        setUniformValue(getUniformLocationByName("environmentIrradianceMapId"), bindLocation);
 
-        m_environmentSpecularMap->bind(1);
-        setUniformValue(getUniformLocationByName("environmentSpecularMapId"), 1);
+        bindLocation++;
+        activeAndBindTexture(bindLocation, m_environmentSpecularMap.get());
+        setUniformValue(getUniformLocationByName("environmentSpecularMapId"), bindLocation);
     } else {
         if (!m_environmentIrradianceMaps) {
             DdsFileReader irradianceFile(":/resources/cedar_bridge_irradiance.dds");
@@ -81,19 +123,104 @@ void ModelOpenGLProgram::bindEnvironment()
             m_environmentSpecularMaps = std::move(irradianceFile.createOpenGLTextures());
         }
 
-        size_t bindPosition = 0;
+        auto oldBindLocationStart = bindLocation;
 
-        bindPosition = 0;
         for (size_t i = 0; i < m_environmentIrradianceMaps->size(); ++i)
-            m_environmentIrradianceMaps->at(i)->bind(bindPosition++);
+            activeAndBindTexture(bindLocation++, m_environmentIrradianceMaps->at(i).get());
         for (size_t i = 0; i < m_environmentSpecularMaps->size(); ++i)
-            m_environmentSpecularMaps->at(i)->bind(bindPosition++);
+            activeAndBindTexture(bindLocation++, m_environmentSpecularMaps->at(i).get());
+
+        bindLocation = oldBindLocationStart;
 
-        bindPosition = 0;
         for (size_t i = 0; i < m_environmentIrradianceMaps->size(); ++i)
-            setUniformValue(getUniformLocationByName("environmentIrradianceMapId[" + std::to_string(i) + "]"), (int)(bindPosition++));
+            setUniformValue(getUniformLocationByName("environmentIrradianceMapId[" + std::to_string(i) + "]"), bindLocation++);
         for (size_t i = 0; i < m_environmentSpecularMaps->size(); ++i)
-            setUniformValue(getUniformLocationByName("environmentSpecularMapId[" + std::to_string(i) + "]"), (int)(bindPosition++));
+            setUniformValue(getUniformLocationByName("environmentSpecularMapId[" + std::to_string(i) + "]"), bindLocation++);
+    }
+
+    // Bind texture, normal map, and other maps
+    if (m_imageIsDirty) {
+        QMutexLocker lock(&m_imageMutex);
+        if (m_imageIsDirty) {
+            m_imageIsDirty = false;
+            if (m_texture) {
+                m_texture->destroy();
+                m_texture.reset();
+            }
+            if (m_textureImage) {
+                m_texture = std::make_unique<QOpenGLTexture>(*m_textureImage);
+            }
+            if (m_normalMap) {
+                m_normalMap->destroy();
+                m_normalMap.reset();
+            }
+            if (m_normalMapImage) {
+                m_normalMap = std::make_unique<QOpenGLTexture>(*m_normalMapImage);
+            }
+            if (m_metalnessRoughnessAmbientOcclusionMap) {
+                m_metalnessRoughnessAmbientOcclusionMap->destroy();
+                m_metalnessRoughnessAmbientOcclusionMap.reset();
+            }
+            if (m_metalnessRoughnessAmbientOcclusionMapImage) {
+                m_metalnessRoughnessAmbientOcclusionMap = std::make_unique<QOpenGLTexture>(*m_metalnessRoughnessAmbientOcclusionMapImage);
+            }
+            m_metalnessMapEnabled = m_hasMetalnessMap;
+            m_roughnessMapEnabled = m_hasRoughnessMap;
+            m_ambientOcclusionMapEnabled = m_hasAmbientOcclusionMap;
+        }
+    }
+    bindLocation++;
+    if (m_texture) {
+        activeAndBindTexture(bindLocation, m_texture.get());
+        setUniformValue(getUniformLocationByName("textureId"), bindLocation);
+        setUniformValue(getUniformLocationByName("textureEnabled"), (int)1);
+    } else {
+        setUniformValue(getUniformLocationByName("textureId"), (int)0);
+        setUniformValue(getUniformLocationByName("textureEnabled"), (int)0);
+    }
+    bindLocation++;
+    if (m_normalMap) {
+        activeAndBindTexture(bindLocation, m_normalMap.get());
+        setUniformValue(getUniformLocationByName("normalMapId"), bindLocation);
+        setUniformValue(getUniformLocationByName("normalMapEnabled"), (int)1);
+    } else {
+        setUniformValue(getUniformLocationByName("normalMapId"), (int)0);
+        setUniformValue(getUniformLocationByName("normalMapEnabled"), (int)0);
+    }
+    bindLocation++;
+    if (m_metalnessRoughnessAmbientOcclusionMap) {
+        activeAndBindTexture(bindLocation, m_metalnessRoughnessAmbientOcclusionMap.get());
+        setUniformValue(getUniformLocationByName("metalnessRoughnessAoMapId"), bindLocation);
+        setUniformValue(getUniformLocationByName("metalnessMapEnabled"), (int)m_metalnessMapEnabled);
+        setUniformValue(getUniformLocationByName("roughnessMapEnabled"), (int)m_roughnessMapEnabled);
+        setUniformValue(getUniformLocationByName("aoMapEnabled"), (int)m_ambientOcclusionMapEnabled);
+    } else {
+        setUniformValue(getUniformLocationByName("metalnessRoughnessAoMapId"), (int)0);
+        setUniformValue(getUniformLocationByName("metalnessMapEnabled"), (int)0);
+        setUniformValue(getUniformLocationByName("roughnessMapEnabled"), (int)0);
+        setUniformValue(getUniformLocationByName("aoMapEnabled"), (int)0);
+    }
+}
+
+void ModelOpenGLProgram::releaseMaps()
+{
+    if (m_texture)
+        m_texture->release();
+    if (m_normalMap)
+        m_normalMap->release();
+    if (m_metalnessRoughnessAmbientOcclusionMap)
+        m_metalnessRoughnessAmbientOcclusionMap->release();
+    if (m_environmentIrradianceMap)
+        m_environmentIrradianceMap->release();
+    if (m_environmentSpecularMap)
+        m_environmentSpecularMap->release();
+    if (m_environmentIrradianceMaps) {
+        for (size_t i = 0; i < m_environmentIrradianceMaps->size(); ++i)
+            m_environmentIrradianceMaps->at(i)->release();
+    }
+    if (m_environmentSpecularMaps) {
+        for (size_t i = 0; i < m_environmentSpecularMaps->size(); ++i)
+            m_environmentSpecularMaps->at(i)->release();
     }
 }
 
diff --git a/application/sources/model_opengl_program.h b/application/sources/model_opengl_program.h
index 29c4e821..803b5647 100644
--- a/application/sources/model_opengl_program.h
+++ b/application/sources/model_opengl_program.h
@@ -5,6 +5,7 @@
 #include <QOpenGLShaderProgram>
 #include <QOpenGLShader>
 #include <QOpenGLTexture>
+#include <QMutex>
 
 class ModelOpenGLProgram: public QOpenGLShaderProgram
 {
@@ -12,10 +13,18 @@ public:
     void load(bool isCoreProfile=false);
     int getUniformLocationByName(const std::string &name);
     bool isCoreProfile() const;
-    void bindEnvironment();
+    void bindMaps();
+    void releaseMaps();
+    void updateTextureImage(std::unique_ptr<QImage> image);
+    void updateNormalMapImage(std::unique_ptr<QImage> image);
+    void updateMetalnessRoughnessAmbientOcclusionMapImage(std::unique_ptr<QImage> image,
+        bool hasMetalnessMap = false, 
+        bool hasRoughnessMap = false, 
+        bool hasAmbientOcclusionMap = false);
 
 private:
     void addShaderFromResource(QOpenGLShader::ShaderType type, const char *resourceName);
+    void activeAndBindTexture(int location, QOpenGLTexture *texture);
 
     bool m_isLoaded = false;
     bool m_isCoreProfile = false;
@@ -25,6 +34,20 @@ private:
     std::unique_ptr<QOpenGLTexture> m_environmentSpecularMap;
     std::unique_ptr<std::vector<std::unique_ptr<QOpenGLTexture>>> m_environmentIrradianceMaps;
     std::unique_ptr<std::vector<std::unique_ptr<QOpenGLTexture>>> m_environmentSpecularMaps;
+    std::unique_ptr<QImage> m_textureImage;
+    std::unique_ptr<QImage> m_normalMapImage;
+    std::unique_ptr<QImage> m_metalnessRoughnessAmbientOcclusionMapImage;
+    std::unique_ptr<QOpenGLTexture> m_texture;
+    std::unique_ptr<QOpenGLTexture> m_normalMap;
+    std::unique_ptr<QOpenGLTexture> m_metalnessRoughnessAmbientOcclusionMap;
+    bool m_hasMetalnessMap = false;
+    bool m_hasRoughnessMap = false;
+    bool m_hasAmbientOcclusionMap = false;
+    QMutex m_imageMutex;
+    bool m_imageIsDirty = false;
+    bool m_metalnessMapEnabled = false;
+    bool m_roughnessMapEnabled = false;
+    bool m_ambientOcclusionMapEnabled = false;
 };
 
 #endif
diff --git a/application/sources/model_widget.cc b/application/sources/model_widget.cc
index f17cb4c0..5bf4da49 100644
--- a/application/sources/model_widget.cc
+++ b/application/sources/model_widget.cc
@@ -174,16 +174,6 @@ bool ModelWidget::isWireframeVisible()
     return m_isWireframeVisible;
 }
 
-void ModelWidget::enableEnvironmentLight()
-{
-    m_isEnvironmentLightEnabled = true;
-}
-
-bool ModelWidget::isEnvironmentLightEnabled()
-{
-    return m_isEnvironmentLightEnabled;
-}
-
 void ModelWidget::toggleRotation()
 {
     if (nullptr != m_rotationTimer) {
@@ -371,9 +361,19 @@ void ModelWidget::setMousePickRadius(float radius)
 
 void ModelWidget::updateMesh(ModelMesh *mesh)
 {
+    if (!m_modelOpenGLProgram)
+        m_modelOpenGLProgram = std::make_unique<ModelOpenGLProgram>();
+    m_modelOpenGLProgram->updateTextureImage(std::unique_ptr<QImage>(nullptr != mesh ? mesh->takeTextureImage() : nullptr));
+    m_modelOpenGLProgram->updateNormalMapImage(std::unique_ptr<QImage>(nullptr != mesh ? mesh->takeNormalMapImage() : nullptr));
+    m_modelOpenGLProgram->updateMetalnessRoughnessAmbientOcclusionMapImage(std::unique_ptr<QImage>(nullptr != mesh ? mesh->takeMetalnessRoughnessAmbientOcclusionMapImage() : nullptr),
+        mesh && mesh->hasMetalnessInImage(),
+        mesh && mesh->hasRoughnessInImage(),
+        mesh && mesh->hasAmbientOcclusionInImage());
+    
     if (!m_modelOpenGLObject)
         m_modelOpenGLObject = std::make_unique<ModelOpenGLObject>();
     m_modelOpenGLObject->update(std::unique_ptr<ModelMesh>(mesh));
+
     emit renderParametersChanged();
     update();
 }
@@ -387,11 +387,6 @@ void ModelWidget::updateWireframeMesh(MonochromeMesh *mesh)
     update();
 }
 
-void ModelWidget::updateColorTexture(QImage *colorTextureImage)
-{
-    // TODO
-}
-
 int ModelWidget::widthInPixels()
 {
 	return m_widthInPixels;
@@ -511,19 +506,20 @@ void ModelWidget::paintGL()
             m_monochromeOpenGLProgram->load(format().profile() == QSurfaceFormat::CoreProfile);
         }
     }
-
+    
     drawModel();
-    if (m_isWireframeVisible)
+    if (m_isWireframeVisible) {
         drawWireframe();
+    }
 }
 
 void ModelWidget::drawWireframe()
 {
     m_monochromeOpenGLProgram->bind();
 
-    m_monochromeOpenGLProgram->setUniformValue(m_modelOpenGLProgram->getUniformLocationByName("projectionMatrix"), m_projection);
-    m_monochromeOpenGLProgram->setUniformValue(m_modelOpenGLProgram->getUniformLocationByName("modelMatrix"), m_world);
-    m_monochromeOpenGLProgram->setUniformValue(m_modelOpenGLProgram->getUniformLocationByName("viewMatrix"), m_camera);
+    m_monochromeOpenGLProgram->setUniformValue(m_monochromeOpenGLProgram->getUniformLocationByName("projectionMatrix"), m_projection);
+    m_monochromeOpenGLProgram->setUniformValue(m_monochromeOpenGLProgram->getUniformLocationByName("modelMatrix"), m_world);
+    m_monochromeOpenGLProgram->setUniformValue(m_monochromeOpenGLProgram->getUniformLocationByName("viewMatrix"), m_camera);
 
     if (m_wireframeOpenGLObject)
         m_wireframeOpenGLObject->draw();
@@ -538,12 +534,15 @@ void ModelWidget::drawModel()
     m_modelOpenGLProgram->setUniformValue(m_modelOpenGLProgram->getUniformLocationByName("eyePosition"), m_eyePosition);
     m_modelOpenGLProgram->setUniformValue(m_modelOpenGLProgram->getUniformLocationByName("projectionMatrix"), m_projection);
     m_modelOpenGLProgram->setUniformValue(m_modelOpenGLProgram->getUniformLocationByName("modelMatrix"), m_world);
+    m_modelOpenGLProgram->setUniformValue(m_modelOpenGLProgram->getUniformLocationByName("normalMatrix"), m_world.normalMatrix());
     m_modelOpenGLProgram->setUniformValue(m_modelOpenGLProgram->getUniformLocationByName("viewMatrix"), m_camera);
 
-    m_modelOpenGLProgram->bindEnvironment();
+    m_modelOpenGLProgram->bindMaps();
 
     if (m_modelOpenGLObject)
         m_modelOpenGLObject->draw();
 
+    m_modelOpenGLProgram->releaseMaps();
+
     m_modelOpenGLProgram->release();
 }
diff --git a/application/sources/model_widget.h b/application/sources/model_widget.h
index 3da881fd..d5612e7b 100644
--- a/application/sources/model_widget.h
+++ b/application/sources/model_widget.h
@@ -36,12 +36,9 @@ public:
     ~ModelWidget();
     void updateMesh(ModelMesh *mesh);
     void updateWireframeMesh(MonochromeMesh *mesh);
-    void updateColorTexture(QImage *colorTextureImage);
     void toggleWireframe();
     bool isWireframeVisible();
     void toggleRotation();
-    void enableEnvironmentLight();
-    bool isEnvironmentLightEnabled();
     void enableMove(bool enabled);
     void enableZoom(bool enabled);
     void enableMousePicking(bool enabled);
@@ -113,7 +110,6 @@ private:
     bool m_moveAndZoomByWindow = true;
     bool m_enableCullFace = true;
     bool m_notGraphics = false;
-    bool m_isEnvironmentLightEnabled = false;
     bool m_isWireframeVisible = false;
     std::pair<QVector3D, QVector3D> screenPositionToMouseRay(const QPoint &screenPosition);
     void updateProjectionMatrix();
diff --git a/application/sources/monochrome_mesh.cc b/application/sources/monochrome_mesh.cc
index 7e45e8ff..f1a82896 100644
--- a/application/sources/monochrome_mesh.cc
+++ b/application/sources/monochrome_mesh.cc
@@ -13,6 +13,45 @@ MonochromeMesh::MonochromeMesh(MonochromeMesh &&mesh)
 
 MonochromeMesh::MonochromeMesh(const dust3d::Object &object)
 {
+    /*
+    auto buildSection = [](const dust3d::Vector3 &origin, 
+            const dust3d::Vector3 &faceNormal, 
+            const dust3d::Vector3 &tagent, 
+            double radius)
+    {
+        auto upDirection = dust3d::Vector3::crossProduct(tagent, faceNormal);
+        return std::vector<dust3d::Vector3> {
+            origin + tagent * radius,
+            origin - upDirection * radius,
+            origin - tagent * radius,
+            origin + upDirection * radius
+        };
+    };
+
+    auto calculateTagent = [](const dust3d::Vector3 &direction) {
+        const std::vector<dust3d::Vector3> axisList = {
+            dust3d::Vector3 {1, 0, 0},
+            dust3d::Vector3 {0, 1, 0},
+            dust3d::Vector3 {0, 0, 1},
+        };
+        float maxDot = -1;
+        size_t nearAxisIndex = 0;
+        bool reversed = false;
+        for (size_t i = 0; i < axisList.size(); ++i) {
+            const auto axis = axisList[i];
+            auto dot = dust3d::Vector3::dotProduct(axis, direction);
+            auto positiveDot = std::abs(dot);
+            if (positiveDot >= maxDot) {
+                reversed = dot < 0;
+                maxDot = positiveDot;
+                nearAxisIndex = i;
+            }
+        }
+        const auto& choosenAxis = axisList[(nearAxisIndex + 1) % 3];
+        auto startDirection = dust3d::Vector3::crossProduct(direction, choosenAxis).normalized();
+        return reversed ? -startDirection : startDirection;
+    };
+    */
     std::set<std::pair<size_t, size_t>> halfEdges;
     for (const auto &face: object.triangleAndQuads) {
         if (3 == face.size()) {
@@ -33,6 +72,7 @@ MonochromeMesh::MonochromeMesh(const dust3d::Object &object)
         halfEdges.insert({face[3], face[0]});
         halfEdges.insert({face[0], face[3]});
     }
+    //m_triangleVertices.reserve(halfEdges.size() * 24);
     m_lineVertices.reserve(halfEdges.size() * 2);
     for (const auto &halfEdge: halfEdges) {
         // For two halfedges shared one edge, only output one line
@@ -40,8 +80,60 @@ MonochromeMesh::MonochromeMesh(const dust3d::Object &object)
             continue;
         const auto &from = object.vertices[halfEdge.first];
         const auto &to = object.vertices[halfEdge.second];
-        m_lineVertices.emplace_back(MonochromeOpenGLVertex {(GLfloat)from.x(), (GLfloat)from.y(), (GLfloat)from.z()});
-        m_lineVertices.emplace_back(MonochromeOpenGLVertex {(GLfloat)to.x(), (GLfloat)to.y(), (GLfloat)to.z()});
+        m_lineVertices.emplace_back(MonochromeOpenGLVertex {
+            (GLfloat)from.x(), 
+            (GLfloat)from.y(), 
+            (GLfloat)from.z()
+        });
+        m_lineVertices.emplace_back(MonochromeOpenGLVertex {
+            (GLfloat)to.x(), 
+            (GLfloat)to.y(), 
+            (GLfloat)to.z()
+        });
+        /*
+        auto direction = to - from;
+        auto sectionNormal = direction.normalized();
+        auto sectionTagent = calculateTagent(sectionNormal);
+        auto sectionTo = buildSection(to, sectionNormal, sectionTagent, 0.002);
+        auto sectionFrom = sectionTo;
+        for (auto &it: sectionFrom)
+            it = it - direction;
+
+        for (size_t i = 0; i < sectionTo.size(); ++i) {
+            size_t j = (i + 1) % sectionTo.size();
+            m_triangleVertices.emplace_back(MonochromeOpenGLVertex {
+                (GLfloat)sectionTo[i].x(), 
+                (GLfloat)sectionTo[i].y(), 
+                (GLfloat)sectionTo[i].z()
+            });
+            m_triangleVertices.emplace_back(MonochromeOpenGLVertex {
+                (GLfloat)sectionFrom[i].x(), 
+                (GLfloat)sectionFrom[i].y(), 
+                (GLfloat)sectionFrom[i].z()
+            });
+            m_triangleVertices.emplace_back(MonochromeOpenGLVertex {
+                (GLfloat)sectionTo[j].x(), 
+                (GLfloat)sectionTo[j].y(), 
+                (GLfloat)sectionTo[j].z()
+            });
+
+            m_triangleVertices.emplace_back(MonochromeOpenGLVertex {
+                (GLfloat)sectionFrom[i].x(), 
+                (GLfloat)sectionFrom[i].y(), 
+                (GLfloat)sectionFrom[i].z()
+            });
+            m_triangleVertices.emplace_back(MonochromeOpenGLVertex {
+                (GLfloat)sectionFrom[j].x(), 
+                (GLfloat)sectionFrom[j].y(), 
+                (GLfloat)sectionFrom[j].z()
+            });
+            m_triangleVertices.emplace_back(MonochromeOpenGLVertex {
+                (GLfloat)sectionTo[j].x(), 
+                (GLfloat)sectionTo[j].y(), 
+                (GLfloat)sectionTo[j].z()
+            });
+        }
+        */
     }
 }
 
diff --git a/application/sources/monochrome_opengl_program.h b/application/sources/monochrome_opengl_program.h
index 6f6460d4..aac445f0 100644
--- a/application/sources/monochrome_opengl_program.h
+++ b/application/sources/monochrome_opengl_program.h
@@ -1,6 +1,7 @@
 #ifndef DUST3D_APPLICATION_MONOCHROME_OPENGL_PROGRAM_H_
 #define DUST3D_APPLICATION_MONOCHROME_OPENGL_PROGRAM_H_
 
+#include <memory>
 #include <QOpenGLShaderProgram>
 #include <QOpenGLShader>
 
diff --git a/application/sources/texture_generator.cc b/application/sources/texture_generator.cc
index 4ccaa648..653c87c8 100644
--- a/application/sources/texture_generator.cc
+++ b/application/sources/texture_generator.cc
@@ -652,7 +652,7 @@ void TextureGenerator::generate()
     if (nullptr != m_resultTextureNormalImage)
         m_resultMesh->setNormalMapImage(new QImage(*m_resultTextureNormalImage));
     if (hasMetalnessMap || hasRoughnessMap || hasAmbientOcclusionMap) {
-        m_resultMesh->setMetalnessRoughnessAmbientOcclusionImage(combineMetalnessRoughnessAmbientOcclusionImages(
+        m_resultMesh->setMetalnessRoughnessAmbientOcclusionMapImage(combineMetalnessRoughnessAmbientOcclusionImages(
             m_resultTextureMetalnessImage,
             m_resultTextureRoughnessImage,
             m_resultTextureAmbientOcclusionImage));