diff --git a/gui_qt/baseform.cpp b/gui_qt/baseform.cpp
index 1a55164..84649fa 100644
--- a/gui_qt/baseform.cpp
+++ b/gui_qt/baseform.cpp
@@ -1,6 +1,7 @@
 #include "baseform.h"
 
 #include "inputdouble.h"
+#include "inputint.h"
 #include "inputcolor.h"
 
 #include <QVBoxLayout>
@@ -11,8 +12,8 @@
 BaseForm::BaseForm(QWidget* parent) :
     QWidget(parent)
 {
+    QPushButton* button;
     QWidget* hwidget;
-    QWidget* buttons;
     QVBoxLayout* vlayout;
     QHBoxLayout* hlayout;
 
@@ -28,6 +29,7 @@ BaseForm::BaseForm(QWidget* parent) :
     form->setLayout(new QGridLayout());
 
     buttons = new QWidget(this);
+    buttons->setLayout(new QHBoxLayout());
 
     hlayout->addWidget(previews);
     hlayout->addWidget(form);
@@ -36,6 +38,11 @@ BaseForm::BaseForm(QWidget* parent) :
 
     hwidget->setLayout(hlayout);
     this->setLayout(vlayout);
+
+    button = addButton("Apply");
+    connect(button, SIGNAL(clicked()), this, SLOT(applyConfig()));
+    button = addButton("Revert");
+    connect(button, SIGNAL(clicked()), this, SLOT(revertConfig()));
 }
 
 void BaseForm::applyConfigPreview()
@@ -49,22 +56,34 @@ void BaseForm::applyConfigPreview()
 
 void BaseForm::revertConfig()
 {
-    QList<InputDouble*> list_doubles = form->findChildren<InputDouble*>("_form_doubleslider_");
-    for (int i = 0; i < list_doubles.size(); i++)
+    QList<BaseInput*> inputs = form->findChildren<BaseInput*>("_form_input_");
+    for (int i = 0; i < inputs.size(); i++)
     {
-        list_doubles[i]->revert();
+        inputs[i]->revert();
     }
 
     BaseForm::applyConfigPreview();
 }
 
+void BaseForm::applyConfig()
+{
+}
+
 void BaseForm::addPreview(Preview* preview, QString label)
 {
     previews->layout()->addWidget(new QLabel(label, previews));
     previews->layout()->addWidget(preview);
+
     preview->setObjectName("_form_preview_");
 }
 
+QPushButton* BaseForm::addButton(QString label)
+{
+    QPushButton* button = new QPushButton(label);
+    buttons->layout()->addWidget(button);
+    return button;
+}
+
 void BaseForm::addInput(BaseInput* input)
 {
     QGridLayout* layout = (QGridLayout*)form->layout();
@@ -75,6 +94,13 @@ void BaseForm::addInput(BaseInput* input)
     layout->addWidget(input->control(), row, 2);
 
     connect(input, SIGNAL(valueChanged()), this, SLOT(applyConfigPreview()));
+
+    input->setObjectName("_form_input_");
+}
+
+void BaseForm::addInputInt(QString label, int* value, int min, int max, int small_step, int large_step)
+{
+    addInput(new InputInt(form, label, value, min, max, small_step, large_step));
 }
 
 void BaseForm::addInputDouble(QString label, double* value, double min, double max, double small_step, double large_step)
diff --git a/gui_qt/baseform.h b/gui_qt/baseform.h
index 6348dfc..1922dd2 100644
--- a/gui_qt/baseform.h
+++ b/gui_qt/baseform.h
@@ -1,7 +1,8 @@
-#ifndef _GUI_QT_BASEFORM_H_
-#define _GUI_QT_BASEFORM_H_
+#ifndef _PAYSAGES_QT_BASEFORM_H_
+#define _PAYSAGES_QT_BASEFORM_H_
 
 #include <QWidget>
+#include <QPushButton>
 #include "preview.h"
 #include "baseinput.h"
 #include "../lib_paysages/shared/types.h"
@@ -16,16 +17,20 @@ public:
 public slots:
     virtual void revertConfig();
     virtual void applyConfigPreview();
+    virtual void applyConfig();
 
 protected:
     void addPreview(Preview* preview, QString label);
+    QPushButton* addButton(QString label);
     void addInput(BaseInput* input);
+    void addInputInt(QString label, int* value, int min, int max, int small_step, int large_step);
     void addInputDouble(QString label, double* value, double min, double max, double small_step, double large_step);
     void addInputColor(QString label, Color* value);
 
 private:
     QWidget* previews;
     QWidget* form;
+    QWidget* buttons;
 };
 
-#endif // _GUI_QT_BASEFORM_H_
+#endif // _PAYSAGES_QT_BASEFORM_H_
diff --git a/gui_qt/baseinput.h b/gui_qt/baseinput.h
index cfebde1..e128b59 100644
--- a/gui_qt/baseinput.h
+++ b/gui_qt/baseinput.h
@@ -1,5 +1,5 @@
-#ifndef _GUI_QT_BASEINPUT_H_
-#define _GUI_QT_BASEINPUT_H_
+#ifndef _PAYSAGES_QT_BASEINPUT_H_
+#define _PAYSAGES_QT_BASEINPUT_H_
 
 #include <QWidget>
 #include <QSlider>
@@ -29,4 +29,4 @@ protected:
     QWidget* _control;
 };
 
-#endif // _GUI_QT_BASEINPUT_H_
+#endif // _PAYSAGES_QT_BASEINPUT_H_
diff --git a/gui_qt/dialogrender.cpp b/gui_qt/dialogrender.cpp
new file mode 100644
index 0000000..ee96bd0
--- /dev/null
+++ b/gui_qt/dialogrender.cpp
@@ -0,0 +1,95 @@
+#include "dialogrender.h"
+
+#include <QVBoxLayout>
+#include <QImage>
+#include <QColor>
+#include <QPainter>
+#include <QScrollArea>
+
+#include "../lib_paysages/shared/functions.h"
+
+class RenderThread:public QThread
+{
+public:
+    void run()
+    {
+        autoRenderSceneTwoPass(0);
+    }
+};
+
+static DialogRender* _current_dialog;
+
+static void _renderResize(int width, int height)
+{
+    delete _current_dialog->pixbuf;
+    _current_dialog->pixbuf = new QImage(width, height, QImage::Format_ARGB32);
+    _current_dialog->area->setMinimumSize(width, height);
+    _current_dialog->area->setMaximumSize(width, height);
+    _current_dialog->area->resize(width, height);
+}
+
+static void _renderClear(Color col)
+{
+    _current_dialog->pixbuf->fill(QColor(col.r * 255.0, col.g * 255.0, col.b * 255.0).rgb());
+}
+
+static void _renderDraw(int x, int y, Color col)
+{
+    _current_dialog->pixbuf->setPixel(x, _current_dialog->pixbuf->height() - 1 - y, QColor(col.r * 255.0, col.g * 255.0, col.b * 255.0).rgb());
+}
+
+static void _renderUpdate(double progress)
+{
+    _current_dialog->area->update();
+    _current_dialog->progress_value = progress * 1000.0;
+}
+
+class RenderArea:public QWidget
+{
+public:
+    RenderArea(QWidget* parent):
+        QWidget(parent)
+    {
+        setMinimumSize(800, 600);
+    }
+
+    void paintEvent(QPaintEvent* event)
+    {
+        QPainter painter(this);
+        painter.drawImage(0, 0, *_current_dialog->pixbuf);
+        _current_dialog->progress->setValue(_current_dialog->progress_value);
+        _current_dialog->progress->update();
+    }
+};
+
+DialogRender::DialogRender(QWidget *parent) :
+    QDialog(parent)
+{
+    QScrollArea* scroll;
+
+    pixbuf = new QImage(1, 1, QImage::Format_ARGB32);
+    _current_dialog = this;
+
+    setModal(true);
+    setLayout(new QVBoxLayout());
+
+    scroll = new QScrollArea(this);
+    scroll->setMinimumSize(850, 650);
+    scroll->setAlignment(Qt::AlignCenter);
+    area = new RenderArea(scroll);
+    scroll->setWidget(area);
+    layout()->addWidget(scroll);
+
+    progress = new QProgressBar(this);
+    progress->setMinimum(0);
+    progress->setMaximum(1000);
+    layout()->addWidget(progress);
+    progress_value = 0;
+
+    renderSetSize(800, 600);
+    autoSetRenderQuality(5);
+    renderSetPreviewCallbacks(_renderResize, _renderClear, _renderDraw, _renderUpdate);
+
+    render_thread = new RenderThread();
+    render_thread->start();
+}
diff --git a/gui_qt/dialogrender.h b/gui_qt/dialogrender.h
new file mode 100644
index 0000000..4a0c821
--- /dev/null
+++ b/gui_qt/dialogrender.h
@@ -0,0 +1,26 @@
+#ifndef _PAYSAGES_QT_DIALOGRENDER_H_
+#define _PAYSAGES_QT_DIALOGRENDER_H_
+
+#include <QDialog>
+#include <QThread>
+#include <QProgressBar>
+
+class DialogRender : public QDialog
+{
+    Q_OBJECT
+public:
+    explicit DialogRender(QWidget *parent = 0);
+    QImage* pixbuf;
+    QWidget* area;
+    QProgressBar* progress;
+    int progress_value;
+
+signals:
+
+public slots:
+
+private:
+    QThread* render_thread;
+};
+
+#endif // _PAYSAGES_QT_DIALOGRENDER_H_
diff --git a/gui_qt/formrender.cpp b/gui_qt/formrender.cpp
new file mode 100644
index 0000000..2a4ac33
--- /dev/null
+++ b/gui_qt/formrender.cpp
@@ -0,0 +1,40 @@
+#include "formrender.h"
+
+#include "dialogrender.h"
+
+/**************** Form ****************/
+FormRender::FormRender(QWidget *parent) :
+    BaseForm(parent),
+    _quality(5)
+{
+    QPushButton* button;
+
+    addInputInt("Quality", &_quality, 1, 10, 1, 1);
+
+    button = addButton("Start new render");
+    connect(button, SIGNAL(clicked()), this, SLOT(startRender()));
+    button = addButton("Show last render");
+    connect(button, SIGNAL(clicked()), this, SLOT(showRender()));
+    button = addButton("Save last render");
+    connect(button, SIGNAL(clicked()), this, SLOT(saveRender()));
+
+    revertConfig();
+}
+
+void FormRender::startRender()
+{
+    DialogRender* dialog = new DialogRender();
+    dialog->exec();
+
+    delete dialog;
+}
+
+void FormRender::showRender()
+{
+
+}
+
+void FormRender::saveRender()
+{
+
+}
diff --git a/gui_qt/formrender.h b/gui_qt/formrender.h
new file mode 100644
index 0000000..fd87b87
--- /dev/null
+++ b/gui_qt/formrender.h
@@ -0,0 +1,22 @@
+#ifndef _PAYSAGES_QT_FORMRENDER_H_
+#define _PAYSAGES_QT_FORMRENDER_H_
+
+#include "baseform.h"
+
+class FormRender : public BaseForm
+{
+    Q_OBJECT
+
+public:
+    explicit FormRender(QWidget *parent = 0);
+
+private slots:
+    void startRender();
+    void showRender();
+    void saveRender();
+
+private:
+    int _quality;
+};
+
+#endif // _PAYSAGES_QT_FORMRENDER_H_
diff --git a/gui_qt/formwater.cpp b/gui_qt/formwater.cpp
index 03c08c1..65b7b41 100644
--- a/gui_qt/formwater.cpp
+++ b/gui_qt/formwater.cpp
@@ -121,7 +121,7 @@ private:
 };
 
 /**************** Form ****************/
-FormWater::FormWater(QWidget *parent) :
+FormWater::FormWater(QWidget *parent):
     BaseForm(parent)
 {
     _definition = waterCreateDefinition();
diff --git a/gui_qt/formwater.h b/gui_qt/formwater.h
index e40c408..283bab2 100644
--- a/gui_qt/formwater.h
+++ b/gui_qt/formwater.h
@@ -1,5 +1,5 @@
-#ifndef _GUI_QT_FORMWATER_H_
-#define _GUI_QT_FORMWATER_H_
+#ifndef _PAYSAGES_QT_FORMWATER_H_
+#define _PAYSAGES_QT_FORMWATER_H_
 
 #include <QWidget>
 #include "preview.h"
@@ -20,4 +20,4 @@ private:
     Preview* previewColor;
 };
 
-#endif // _GUI_QT_FORMWATER_H_
+#endif // _PAYSAGES_QT_FORMWATER_H_
diff --git a/gui_qt/inputcolor.cpp b/gui_qt/inputcolor.cpp
index a80279a..593e1d8 100644
--- a/gui_qt/inputcolor.cpp
+++ b/gui_qt/inputcolor.cpp
@@ -7,8 +7,6 @@ InputColor::InputColor(QWidget* form, QString label, Color* value):
     BaseInput(form, label),
     _value(value)
 {
-    setObjectName("_inputcolor_");
-
     _preview = new QWidget(form);
     _control = new QPushButton("Edit", form);
 }
diff --git a/gui_qt/inputcolor.h b/gui_qt/inputcolor.h
index 33090a6..96acca6 100644
--- a/gui_qt/inputcolor.h
+++ b/gui_qt/inputcolor.h
@@ -1,5 +1,5 @@
-#ifndef _GUI_QT_INPUTCOLOR_H_
-#define _GUI_QT_INPUTCOLOR_H_
+#ifndef _PAYSAGES_QT_INPUTCOLOR_H_
+#define _PAYSAGES_QT_INPUTCOLOR_H_
 
 #include <QWidget>
 #include "baseinput.h"
@@ -23,4 +23,4 @@ private:
     Color* _value;
 };
 
-#endif // _GUI_QT_INPUTCOLOR_H_
+#endif // _PAYSAGES_QT_INPUTCOLOR_H_
diff --git a/gui_qt/inputdouble.cpp b/gui_qt/inputdouble.cpp
index 73e5864..1bc5dc6 100644
--- a/gui_qt/inputdouble.cpp
+++ b/gui_qt/inputdouble.cpp
@@ -6,8 +6,6 @@ InputDouble::InputDouble(QWidget* form, QString label, double* value, double min
     BaseInput(form, label),
     value(value), min(min), max(max), small_step(small_step), large_step(large_step)
 {
-    setObjectName("_form_doubleslider_");
-
     slider = new QSlider(form);
 
     slider->setOrientation(Qt::Horizontal);
diff --git a/gui_qt/inputdouble.h b/gui_qt/inputdouble.h
index b706609..faa0bbf 100644
--- a/gui_qt/inputdouble.h
+++ b/gui_qt/inputdouble.h
@@ -1,5 +1,5 @@
-#ifndef _GUI_QT_INPUTDOUBLE_H_
-#define _GUI_QT_INPUTDOUBLE_H_
+#ifndef _PAYSAGES_QT_INPUTDOUBLE_H_
+#define _PAYSAGES_QT_INPUTDOUBLE_H_
 
 #include <QWidget>
 #include <QSlider>
@@ -27,4 +27,4 @@ private:
     double large_step;
 };
 
-#endif // _GUI_QT_INPUTDOUBLE_H_
+#endif // _PAYSAGES_QT_INPUTDOUBLE_H_
diff --git a/gui_qt/inputint.cpp b/gui_qt/inputint.cpp
new file mode 100644
index 0000000..4ef0aac
--- /dev/null
+++ b/gui_qt/inputint.cpp
@@ -0,0 +1,39 @@
+#include "inputint.h"
+
+#include <QLabel>
+
+InputInt::InputInt(QWidget* form, QString label, int* value, int min, int max, int small_step, int large_step):
+    BaseInput(form, label),
+    value(value), min(min), max(max), small_step(small_step), large_step(large_step)
+{
+    slider = new QSlider(form);
+
+    slider->setOrientation(Qt::Horizontal);
+    slider->setMinimumWidth(150);
+    slider->setMaximumWidth(400);
+
+    slider->setMinimum(min);
+    slider->setMaximum(max);
+    slider->setValue(*value);
+
+    slider->setTickInterval(large_step);
+    slider->setTickPosition(QSlider::TicksBelow);
+
+    connect(slider, SIGNAL(valueChanged(int)), this, SLOT(applyValue()));
+
+    _preview = new QLabel(form);
+    _control = slider;
+}
+
+void InputInt::applyValue()
+{
+    *value = (int)slider->value();
+    ((QLabel*)_preview)->setText(QString("%1").arg(*value));
+
+    BaseInput::applyValue();
+}
+
+void InputInt::revert()
+{
+    slider->setValue(*value);
+}
diff --git a/gui_qt/inputint.h b/gui_qt/inputint.h
new file mode 100644
index 0000000..69a44df
--- /dev/null
+++ b/gui_qt/inputint.h
@@ -0,0 +1,30 @@
+#ifndef _PAYSAGES_QT_INPUTINT_H_
+#define _PAYSAGES_QT_INPUTINT_H_
+
+#include <QWidget>
+#include <QSlider>
+#include "baseinput.h"
+
+class InputInt:public BaseInput
+{
+    Q_OBJECT
+
+public:
+    InputInt(QWidget* form, QString label, int* value, int min, int max, int small_step, int large_step);
+
+public slots:
+    virtual void revert();
+
+protected slots:
+    virtual void applyValue();
+
+private:
+    QSlider* slider;
+    int* value;
+    int min;
+    int max;
+    int small_step;
+    int large_step;
+};
+
+#endif // _PAYSAGES_QT_INPUTINT_H_
diff --git a/gui_qt/mainwindow.cpp b/gui_qt/mainwindow.cpp
index 606ab59..79f2de1 100644
--- a/gui_qt/mainwindow.cpp
+++ b/gui_qt/mainwindow.cpp
@@ -1,6 +1,7 @@
 #include <QApplication>
 #include "mainwindow.h"
 #include "formwater.h"
+#include "formrender.h"
 
 #include "../lib_paysages/shared/functions.h"
 
@@ -24,7 +25,9 @@ MainWindow::MainWindow(QWidget *parent) :
     QTabWidget* tabs;
 
     tabs = new QTabWidget(this);
+    tabs->addTab(new BaseForm(tabs), "Temp");
     tabs->addTab(new FormWater(tabs), "Water");
+    tabs->addTab(new FormRender(tabs), "Render");
 
     setCentralWidget(tabs);
 }
diff --git a/gui_qt/mainwindow.h b/gui_qt/mainwindow.h
index fb5c048..9bbfb63 100644
--- a/gui_qt/mainwindow.h
+++ b/gui_qt/mainwindow.h
@@ -1,5 +1,5 @@
-#ifndef MAINWINDOW_H
-#define MAINWINDOW_H
+#ifndef _PAYSAGES_QT_MAINWINDOW_H_
+#define _PAYSAGES_QT_MAINWINDOW_H_
 
 #include <QMainWindow>
 
@@ -15,4 +15,4 @@ public:
     explicit MainWindow(QWidget *parent = 0);
 };
 
-#endif // MAINWINDOW_H
+#endif // _PAYSAGES_QT_MAINWINDOW_H_
diff --git a/gui_qt/paysages-qt.pro b/gui_qt/paysages-qt.pro
index 105f403..930ec32 100644
--- a/gui_qt/paysages-qt.pro
+++ b/gui_qt/paysages-qt.pro
@@ -18,7 +18,10 @@ HEADERS += ../lib_paysages/shared/functions.h ../lib_paysages/shared/types.h \
     baseform.h \
     inputdouble.h \
     baseinput.h \
-    inputcolor.h
+    inputcolor.h \
+    formrender.h \
+    inputint.h \
+    dialogrender.h
 FORMS +=
 SOURCES += \
     mainwindow.cpp \
@@ -27,4 +30,7 @@ SOURCES += \
     baseform.cpp \
     inputdouble.cpp \
     baseinput.cpp \
-    inputcolor.cpp
+    inputcolor.cpp \
+    formrender.cpp \
+    inputint.cpp \
+    dialogrender.cpp
diff --git a/gui_qt/preview.h b/gui_qt/preview.h
index c1439e2..288dc96 100644
--- a/gui_qt/preview.h
+++ b/gui_qt/preview.h
@@ -1,5 +1,5 @@
-#ifndef _GUI_QT_PREVIEW_H_
-#define _GUI_QT_PREVIEW_H_
+#ifndef _PAYSAGES_QT_PREVIEW_H_
+#define _PAYSAGES_QT_PREVIEW_H_
 
 #include <QMutex>
 #include <QImage>
@@ -47,4 +47,4 @@ protected:
     //SmallPreviewCallback renderer;
 };
 
-#endif // _GUI_QT_PREVIEW_H_
+#endif // _PAYSAGES_QT_PREVIEW_H_
diff --git a/lib_paysages/shared/functions.h b/lib_paysages/shared/functions.h
index f55ae0d..d031ae7 100644
--- a/lib_paysages/shared/functions.h
+++ b/lib_paysages/shared/functions.h
@@ -27,7 +27,7 @@ void autoSetDaytime(int hour, int minute);
 void autoSetDaytimeFraction(double daytime);
 void autoSetRenderQuality(int quality);
 void autoGenRealisticLandscape(int seed);
-void autoRenderSceneTwoPass();
+void autoRenderSceneTwoPass(int postonly);
 void autoRenderSceneRayTracing();
 
 /* camera.c */