diff --git a/src/interface/modeler/quickapp/MainModelerWindow.cpp b/src/interface/modeler/quickapp/MainModelerWindow.cpp
index a14fcfb..2d15232 100644
--- a/src/interface/modeler/quickapp/MainModelerWindow.cpp
+++ b/src/interface/modeler/quickapp/MainModelerWindow.cpp
@@ -20,7 +20,7 @@ MainModelerWindow::MainModelerWindow()
     renderer = new OpenGLRenderer(scenery);
 
     render_preview_provider = new RenderPreviewProvider();
-    render_process = new RenderProcess(render_preview_provider);
+    render_process = new RenderProcess(this, render_preview_provider);
 
     qmlRegisterType<OpenGLView>("Paysages", 1, 0, "OpenGLView");
     engine()->addImageProvider("renderpreviewprovider", render_preview_provider);
@@ -58,7 +58,14 @@ void MainModelerWindow::keyReleaseEvent(QKeyEvent *event)
     if (event->key() == Qt::Key_F5)
     {
         // Start render in a thread
-        render_process->startRender(scenery, RenderConfig(400, 300, 1, 3));
+        if (event->modifiers() & Qt::ControlModifier)
+        {
+            render_process->startRender(scenery, RenderConfig(1920, 1080, 4, 8));
+        }
+        else
+        {
+            render_process->startRender(scenery, RenderConfig(400, 300, 1, 3));
+        }
 
         // Resize preview
         QSize preview_size = render_process->getPreviewSize();
diff --git a/src/interface/modeler/quickapp/RenderProcess.cpp b/src/interface/modeler/quickapp/RenderProcess.cpp
index 4a8589a..d0c0c0f 100644
--- a/src/interface/modeler/quickapp/RenderProcess.cpp
+++ b/src/interface/modeler/quickapp/RenderProcess.cpp
@@ -1,6 +1,7 @@
 #include "RenderProcess.h"
 
 #include <QSize>
+#include "MainModelerWindow.h"
 #include "SoftwareCanvasRenderer.h"
 #include "RenderPreviewProvider.h"
 #include "RenderConfig.h"
@@ -22,8 +23,8 @@ private:
     SoftwareCanvasRenderer *renderer;
 };
 
-RenderProcess::RenderProcess(RenderPreviewProvider *destination):
-    destination(destination)
+RenderProcess::RenderProcess(MainModelerWindow *window, RenderPreviewProvider *destination):
+    window(window), destination(destination)
 {
     rendering = false;
     renderer = NULL;
@@ -108,4 +109,13 @@ void RenderProcess::timerEvent(QTimerEvent *)
         delete render_thread;
         render_thread = NULL;
     }
+
+    if (renderer)
+    {
+        QObject *progress = window->findQmlObject("render_progress");
+        if (progress)
+        {
+            progress->setProperty("value", renderer->getProgress());
+        }
+    }
 }
diff --git a/src/interface/modeler/quickapp/RenderProcess.h b/src/interface/modeler/quickapp/RenderProcess.h
index 366eb51..cbb916a 100644
--- a/src/interface/modeler/quickapp/RenderProcess.h
+++ b/src/interface/modeler/quickapp/RenderProcess.h
@@ -13,7 +13,7 @@ class RenderProcess: public QObject
     Q_OBJECT
 
 public:
-    RenderProcess(RenderPreviewProvider *destination);
+    RenderProcess(MainModelerWindow *window, RenderPreviewProvider *destination);
     virtual ~RenderProcess();
 
     /**
@@ -35,6 +35,7 @@ protected:
     virtual void timerEvent(QTimerEvent *event) override;
 
 private:
+    MainModelerWindow *window;
     RenderPreviewProvider *destination;
     bool rendering;
     SoftwareCanvasRenderer *renderer;
diff --git a/src/interface/modeler/quickapp/qml/RenderDialog.qml b/src/interface/modeler/quickapp/qml/RenderDialog.qml
index f92142a..e18de6e 100644
--- a/src/interface/modeler/quickapp/qml/RenderDialog.qml
+++ b/src/interface/modeler/quickapp/qml/RenderDialog.qml
@@ -1,4 +1,5 @@
 import QtQuick 2.2
+import QtQuick.Controls 1.2
 
 Rectangle {
     width: 400
@@ -11,9 +12,11 @@ Rectangle {
 
     onOpacityChanged: {
         refresh();
+        render_progress.value = 0;
     }
     onVisibleChanged: {
         refresh();
+        render_progress.value = 0;
     }
 
     Image {
@@ -26,6 +29,15 @@ Rectangle {
         cache: false
     }
 
+    ProgressBar {
+        id: render_progress
+        objectName: "render_progress"
+        width: parent.width * 0.8
+        anchors.top: preview_image.bottom
+        anchors.horizontalCenter: preview_image.horizontalCenter
+        anchors.topMargin: 20
+    }
+
     Timer {
         interval: 500
         running: true