diff --git a/gui_qt/dialognoise.cpp b/gui_qt/dialognoise.cpp
index 4247f56..d0e89f8 100644
--- a/gui_qt/dialognoise.cpp
+++ b/gui_qt/dialognoise.cpp
@@ -21,7 +21,7 @@ public:
         _noise = noise;
         _level = -1;
     }
-        
+
     void setLevel(int row)
     {
         _level = row;
@@ -76,7 +76,7 @@ DialogNoise::DialogNoise(QWidget *parent, NoiseGenerator* value):
     QWidget* form;
     QWidget* buttons;
     QPushButton* button;
-    
+
     _base = value;
     _current = noiseCreateGenerator();
 
@@ -85,7 +85,7 @@ DialogNoise::DialogNoise(QWidget *parent, NoiseGenerator* value):
     previews = new QWidget(this);
     previews->setLayout(new QVBoxLayout());
     layout()->addWidget(previews);
-    
+
     previewLevel = new PreviewLevel(previews, _current);
     previews->layout()->addWidget(new QLabel("Level preview"));
     previews->layout()->addWidget(previewLevel);
@@ -98,16 +98,16 @@ DialogNoise::DialogNoise(QWidget *parent, NoiseGenerator* value):
     form = new QWidget(this);
     form->setLayout(new QVBoxLayout());
     layout()->addWidget(form);
-    
+
     form->layout()->addWidget(new QLabel("Noise components"));
     levels = new QListWidget(form);
     form->layout()->addWidget(levels);
     QObject::connect(levels, SIGNAL(currentRowChanged(int)), this, SLOT(levelChanged(int)));
-    
+
     buttons = new QWidget(form);
     buttons->setLayout(new QHBoxLayout());
     form->layout()->addWidget(buttons);
-    
+
     button = new QPushButton("Add component", buttons);
     buttons->layout()->addWidget(button);
     QObject::connect(button, SIGNAL(clicked()), this, SLOT(addLevel()));
@@ -139,11 +139,11 @@ DialogNoise::DialogNoise(QWidget *parent, NoiseGenerator* value):
     slider_scaling->setTickPosition(QSlider::TicksBelow);
     form->layout()->addWidget(slider_scaling);
     QObject::connect(slider_scaling, SIGNAL(valueChanged(int)), this, SLOT(scalingChanged(int)));
-    
+
     buttons = new QWidget(form);
     buttons->setLayout(new QHBoxLayout());
     form->layout()->addWidget(buttons);
-    
+
     button = new QPushButton("Validate", buttons);
     buttons->layout()->addWidget(button);
     QObject::connect(button, SIGNAL(clicked()), this, SLOT(accept()));
@@ -157,7 +157,7 @@ DialogNoise::DialogNoise(QWidget *parent, NoiseGenerator* value):
     QObject::connect(button, SIGNAL(clicked()), this, SLOT(reject()));
 
     setWindowTitle("Paysages 3D - Noise editor");
-    
+
     revert();
 }
 
@@ -165,7 +165,7 @@ DialogNoise::~DialogNoise()
 {
     delete previewLevel;
     delete previewTotal;
-    
+
     noiseDeleteGenerator(_current);
 }
 
@@ -202,14 +202,14 @@ void DialogNoise::revert()
 void DialogNoise::revertToCurrent()
 {
     int i, n;
-    
+
     levels->clear();
     n = noiseGetLevelCount(_current);
     for (i = 0; i < n; i++)
     {
-        levels->addItem("Level");
+        levels->addItem(QString("Component %1").arg(i + 1));
     }
-    
+
     previewLevel->redraw();
     previewTotal->redraw();
 }
@@ -217,20 +217,22 @@ void DialogNoise::revertToCurrent()
 void DialogNoise::addLevel()
 {
     NoiseLevel level;
-    
+
     level.height = 0.1;
     level.scaling = 0.1;
     level.xoffset = 0.0;
     level.yoffset = 0.0;
     level.zoffset = 0.0;
     noiseAddLevel(_current, level);
-    
+
     revertToCurrent();
 }
 
 void DialogNoise::removeLevel()
 {
-    // TODO
+    noiseRemoveLevel(_current, _current_level);
+
+    revertToCurrent();
 }
 
 void DialogNoise::levelChanged(int row)
@@ -239,7 +241,7 @@ void DialogNoise::levelChanged(int row)
     {
         _current_level = row;
         ((PreviewLevel*)previewLevel)->setLevel(row);
-        
+
         slider_height->setValue(_current_level_params.height * 1000.0);
         slider_scaling->setValue(_current_level_params.scaling * 1000.0);
     }
diff --git a/gui_qt/formterrain.cpp b/gui_qt/formterrain.cpp
new file mode 100644
index 0000000..0f2c4bc
--- /dev/null
+++ b/gui_qt/formterrain.cpp
@@ -0,0 +1,75 @@
+#include "formterrain.h"
+
+#include "tools.h"
+#include <QColor>
+#include <QSlider>
+#include <math.h>
+
+#include "../lib_paysages/terrain.h"
+#include "../lib_paysages/shared/functions.h"
+#include "../lib_paysages/shared/constants.h"
+
+static TerrainDefinition _definition;
+
+/**************** Previews ****************/
+class PreviewTerrainHeight:public Preview
+{
+public:
+    PreviewTerrainHeight(QWidget* parent):
+        Preview(parent)
+    {
+    }
+protected:
+    QColor getColor(double x, double y)
+    {
+        double height;
+
+        height = terrainGetHeightNormalized(x, y);
+        return QColor((int)(255.0 * height), (int)(255.0 * height), (int)(255.0 * height));
+    }
+};
+
+class PreviewTerrainColor:public Preview
+{
+public:
+    PreviewTerrainColor(QWidget* parent):
+        Preview(parent)
+    {
+        _environment.toggle_fog = 0;
+    }
+protected:
+    QColor getColor(double x, double y)
+    {
+        return colorToQColor(terrainGetColorCustom(x, y, scaling, &_definition, NULL, &_environment));
+    }
+private:
+    TerrainEnvironment _environment;
+};
+
+/**************** Form ****************/
+FormTerrain::FormTerrain(QWidget *parent):
+    BaseForm(parent)
+{
+    _definition = terrainCreateDefinition();
+
+    previewHeight = new PreviewTerrainHeight(this);
+    previewColor = new PreviewTerrainColor(this);
+    addPreview(previewHeight, QString("Height preview"));
+    addPreview(previewColor, QString("Color preview"));
+
+    addInputNoise("Height", _definition.height_noise);
+
+    revertConfig();
+}
+
+void FormTerrain::revertConfig()
+{
+    terrainCopyDefinition(terrainGetDefinition(), &_definition);
+    BaseForm::revertConfig();
+}
+
+void FormTerrain::applyConfig()
+{
+    terrainSetDefinition(_definition);
+    BaseForm::applyConfig();
+}
diff --git a/gui_qt/formterrain.h b/gui_qt/formterrain.h
new file mode 100644
index 0000000..7bb292d
--- /dev/null
+++ b/gui_qt/formterrain.h
@@ -0,0 +1,24 @@
+#ifndef _PAYSAGES_QT_FORMTERRAIN_H_
+#define _PAYSAGES_QT_FORMTERRAIN_H_
+
+#include <QWidget>
+#include "preview.h"
+#include "baseform.h"
+
+class FormTerrain : public BaseForm
+{
+    Q_OBJECT
+
+public:
+    explicit FormTerrain(QWidget *parent = 0);
+
+public slots:
+    virtual void revertConfig();
+    virtual void applyConfig();
+
+private:
+    Preview* previewHeight;
+    Preview* previewColor;
+};
+
+#endif
diff --git a/gui_qt/formwater.cpp b/gui_qt/formwater.cpp
index 8de4169..5809cad 100644
--- a/gui_qt/formwater.cpp
+++ b/gui_qt/formwater.cpp
@@ -13,10 +13,10 @@
 static WaterDefinition _definition;
 
 /**************** Previews ****************/
-class PreviewCoverage:public Preview
+class PreviewWaterCoverage:public Preview
 {
 public:
-    PreviewCoverage(QWidget* parent):
+    PreviewWaterCoverage(QWidget* parent):
         Preview(parent)
     {
     }
@@ -38,10 +38,10 @@ protected:
     }
 };
 
-class PreviewColor:public Preview
+class PreviewWaterColor:public Preview
 {
 public:
-    PreviewColor(QWidget* parent):
+    PreviewWaterColor(QWidget* parent):
         Preview(parent)
     {
     }
@@ -85,6 +85,7 @@ protected:
         environment.toggle_fog = 0;
         environment.toggle_shadows = 0;
         quality.force_detail = 0.0001;
+        quality.detail_boost = 1.0;
 
         result = waterGetColorCustom(location, look, &definition, &quality, &environment).final;
         return colorToQColor(result);
@@ -100,6 +101,7 @@ private:
         if (direction.z < 0.0001)
         {
             result.hit_color = COLOR_WHITE;
+            result.hit_location = start;
         }
         else
         {
@@ -114,8 +116,10 @@ private:
             {
                 result.hit_color = COLOR_GREY;
             }
+            result.hit_location.x = x;
+            result.hit_location.y = y;
+            result.hit_location.z = 0.0;
         }
-        /* TODO hit_location */
 
         return result;
     }
@@ -127,8 +131,8 @@ FormWater::FormWater(QWidget *parent):
 {
     _definition = waterCreateDefinition();
 
-    previewCoverage = new PreviewCoverage(this);
-    previewColor = new PreviewColor(this);
+    previewCoverage = new PreviewWaterCoverage(this);
+    previewColor = new PreviewWaterColor(this);
     addPreview(previewCoverage, QString("Coverage preview"));
     addPreview(previewColor, QString("Color preview"));
 
diff --git a/gui_qt/mainwindow.cpp b/gui_qt/mainwindow.cpp
index 0e31607..e007ff3 100644
--- a/gui_qt/mainwindow.cpp
+++ b/gui_qt/mainwindow.cpp
@@ -4,6 +4,7 @@
 #include <QMenuBar>
 #include <QFileDialog>
 
+#include "formterrain.h"
 #include "formwater.h"
 #include "formsky.h"
 #include "formrender.h"
@@ -30,7 +31,7 @@ MainWindow::MainWindow(QWidget *parent) :
     QMenu* menu;
 
     tabs = new QTabWidget(this);
-    tabs->addTab(new BaseForm(tabs), "Temp");
+    tabs->addTab(new FormTerrain(tabs), "Terrain");
     tabs->addTab(new FormWater(tabs), "Water");
     tabs->addTab(new FormSky(tabs), "Sky");
     tabs->addTab(new FormRender(tabs), "Render");
diff --git a/gui_qt/paysages-qt.pro b/gui_qt/paysages-qt.pro
index 27eac72..459b130 100644
--- a/gui_qt/paysages-qt.pro
+++ b/gui_qt/paysages-qt.pro
@@ -14,34 +14,36 @@ win32:LIBS += ../libpaysages.a -lDevIL -lILU -lILUT -lglib-2.0 -lgthread-2.0
 
 # Input
 HEADERS += ../lib_paysages/shared/functions.h ../lib_paysages/shared/types.h \
-    mainwindow.h \
-    formwater.h \
-    preview.h \
     baseform.h \
-    inputdouble.h \
     baseinput.h \
-    inputcolor.h \
-    formrender.h \
-    inputint.h \
-    dialogrender.h \
     dialognoise.h \
-    inputcolorgradation.h \
+    dialogrender.h \
+    formrender.h \
     formsky.h \
+    formterrain.h \
+    formwater.h \
+    inputcolor.h \
+    inputcolorgradation.h \
+    inputdouble.h \
+    inputint.h \
     inputnoise.h \
+    mainwindow.h \
+    preview.h \
     tools.h
 FORMS +=
 SOURCES += \
-    mainwindow.cpp \
-    formwater.cpp \
-    preview.cpp \
     baseform.cpp \
-    inputdouble.cpp \
     baseinput.cpp \
-    inputcolor.cpp \
-    formrender.cpp \
-    inputint.cpp \
-    dialogrender.cpp \
     dialognoise.cpp \
-    inputcolorgradation.cpp \
+    dialogrender.cpp \
+    formrender.cpp \
     formsky.cpp \
-    inputnoise.cpp
+    formterrain.cpp \
+    formwater.cpp \
+    inputcolor.cpp \
+    inputcolorgradation.cpp \
+    inputdouble.cpp \
+    inputint.cpp \
+    inputnoise.cpp \
+    mainwindow.cpp \
+    preview.cpp
diff --git a/gui_qt/preview.cpp b/gui_qt/preview.cpp
index 602ca22..1cb9216 100644
--- a/gui_qt/preview.cpp
+++ b/gui_qt/preview.cpp
@@ -3,8 +3,6 @@
 #include <QPainter>
 #include <QTimer>
 
-static QVector<Preview*> _previews;
-
 class PreviewDrawer:public QThread
 {
 public:
@@ -48,15 +46,18 @@ Preview::Preview(QWidget* parent) :
     this->xoffset = 0.0;
     this->yoffset = 0.0;
     this->pixbuf = new QImage(this->size(), QImage::Format_ARGB32);
+    this->pixbuf->fill(0x00000000);
 
     this->alive = true;
     this->need_rerender = false;
-    this->need_render = false;
+    this->need_render = true;
 
     this->setMinimumSize(256, 256);
     this->setMaximumSize(256, 256);
     this->resize(256, 256);
 
+    QObject::connect(this, SIGNAL(contentChange()), this, SLOT(update()));
+
     this->updater = new PreviewDrawer(this);
     this->updater->start();
 }
@@ -85,7 +86,7 @@ void Preview::doRender()
         }
         if (this->need_render)
         {
-            this->need_render = 0;
+            this->need_render = false;
             this->renderPixbuf();
         }
     }
@@ -94,7 +95,7 @@ void Preview::doRender()
 void Preview::redraw()
 {
     //lock->lock();
-    need_rerender = 1;
+    need_rerender = true;
     //lock->unlock();
 }
 
@@ -110,12 +111,18 @@ void Preview::resizeEvent(QResizeEvent* event)
     QImage* image;
 
     this->lock->lock();
-    image = this->pixbuf;
-    this->pixbuf = new QImage(this->size(), QImage::Format_ARGB32);
-    delete image;
-    this->lock->unlock();
 
-    this->forceRender();
+    image = this->pixbuf;
+
+    this->pixbuf = new QImage(this->size(), QImage::Format_ARGB32);
+
+    this->pixbuf->fill(0x00000000);
+    this->need_rerender = false;
+    this->need_render = true;
+
+    delete image;
+
+    this->lock->unlock();
 }
 
 void Preview::paintEvent(QPaintEvent* event)
@@ -128,8 +135,8 @@ void Preview::forceRender()
 {
     this->lock->lock();
     this->pixbuf->fill(0x00000000);
-    this->need_rerender = 0;
-    this->need_render = 1;
+    this->need_rerender = false;
+    this->need_render = true;
     this->lock->unlock();
 }
 
@@ -164,14 +171,12 @@ void Preview::renderPixbuf()
         }
         if (done && (x == w - 1 || x % 10 == 0))
         {
-            this->update();
+            emit contentChange();
         }
-
         this->lock->unlock();
     }
 }
 
-
 //static void _scrollPixbuf(SmallPreview* preview, int dx, int dy)
 //{
 //    int xstart, ystart, xsize, ysize, y;
diff --git a/gui_qt/preview.h b/gui_qt/preview.h
index d694bac..8aafc1d 100644
--- a/gui_qt/preview.h
+++ b/gui_qt/preview.h
@@ -17,7 +17,7 @@ public:
     static void startUpdater();
     void doRender();
     void redraw();
-    
+
     void setScaling(double scaling);
 
 protected:
@@ -50,8 +50,12 @@ protected:
     bool alive;
     bool need_rerender;
     bool need_render;
+
 private:
     QThread* updater;
+
+signals:
+    void contentChange();
 };
 
 #endif
diff --git a/lib_paysages/auto.c b/lib_paysages/auto.c
index 4745c29..2e0de34 100644
--- a/lib_paysages/auto.c
+++ b/lib_paysages/auto.c
@@ -15,6 +15,7 @@
 #include "modifiers.h"
 #include "terrain.h"
 #include "textures.h"
+#include "lighting.h"
 
 #ifdef WIN32
 #include <windows.h>
@@ -47,47 +48,6 @@ void autoInit()
 #ifdef _SC_NPROCESSORS_ONLN
     _cpu_count = (int)sysconf(_SC_NPROCESSORS_ONLN);
 #endif
-    renderSetBackgroundColor(&COLOR_BLACK);
-
-    terrainInit();
-    waterInit();
-    renderInit();
-}
-
-void autoSave(char* filepath)
-{
-    FILE* f = fopen(filepath, "wb");
-
-    texturesSave(f);
-
-    cameraSave(f);
-    cloudsSave(f);
-    fogSave(f);
-    lightingSave(f);
-    renderSave(f);
-    skySave(f);
-    terrainSave(f);
-    waterSave(f);
-
-    fclose(f);
-}
-
-void autoLoad(char* filepath)
-{
-    FILE* f = fopen(filepath, "rb");
-
-    texturesLoad(f);
-
-    cameraLoad(f);
-    cloudsLoad(f);
-    fogLoad(f);
-    lightingLoad(f);
-    renderLoad(f);
-    skyLoad(f);
-    terrainLoad(f);
-    waterLoad(f);
-
-    fclose(f);
 }
 
 void autoSetDaytime(int hour, int minute)
@@ -98,8 +58,8 @@ void autoSetDaytime(int hour, int minute)
 void autoSetDaytimeFraction(double daytime)
 {
     SkyDefinition sky;
-    ColorGradation grad_sun;
-    Color sun;
+    /*ColorGradation grad_sun;
+    Color sun;*/
 
     daytime = fmod(daytime, 1.0);
     if (daytime < 0.0)
@@ -107,7 +67,7 @@ void autoSetDaytimeFraction(double daytime)
         daytime += 1.0;
     }
 
-    lightingSetSunAngle(0.0, (daytime + 0.25) * M_PI * 2.0);
+    /*lightingSetSunAngle(0.0, (daytime + 0.25) * M_PI * 2.0);
 
     grad_sun = colorGradationCreate();
     colorGradationAddRgba(&grad_sun, 0.2, 0.1, 0.1, 0.1, 1.0);
@@ -118,7 +78,7 @@ void autoSetDaytimeFraction(double daytime)
     colorGradationAddRgba(&grad_sun, 0.75, 0.7, 0.6, 0.5, 1.0);
     colorGradationAddRgba(&grad_sun, 0.8, 0.1, 0.1, 0.1, 1.0);
     sun = colorGradationGet(&grad_sun, daytime);
-    lightingSetSunColor(sun);
+    lightingSetSunColor(sun);*/
 
     sky = skyGetDefinition();
     sky.daytime = daytime;
@@ -163,6 +123,7 @@ void autoGenRealisticLandscape(int seed)
     CloudsDefinition cloud;
     SkyDefinition sky;
     TextureDefinition texture;
+    LightingDefinition lighting;
     int layer;
     HeightModifier* mod;
     Zone* zone;
@@ -249,6 +210,12 @@ void autoGenRealisticLandscape(int seed)
     sky.sun_radius = 0.02;
     skySetDefinition(sky);
 
+    /* Lighting */
+    lighting = lightingCreateDefinition();
+    lighting.autosetfromsky = 1;
+    lightingSetDefinition(lighting);
+
+    /* Terrain */
     terrain = terrainCreateDefinition();
     noiseGenerateBaseNoise(terrain.height_noise, 1048576);
     noiseAddLevelsSimple(terrain.height_noise, 10, 10.0, 1.0);
@@ -275,6 +242,7 @@ void autoGenRealisticLandscape(int seed)
     terrainSetDefinition(terrain);
     terrainDeleteDefinition(terrain);
 
+    /* Textures */
     layer = texturesAddLayer();
     texture = texturesCreateDefinition();
     noiseGenerateBaseNoise(texture.bump_noise, 102400);
@@ -308,6 +276,7 @@ void autoGenRealisticLandscape(int seed)
     texturesSetDefinition(layer, texture);
     texturesDeleteDefinition(texture);*/
 
+    /* Fog */
     fogSetDistance(20.0, 100.0);
 }
 
diff --git a/lib_paysages/clouds.c b/lib_paysages/clouds.c
index 216bcb6..b03aadd 100644
--- a/lib_paysages/clouds.c
+++ b/lib_paysages/clouds.c
@@ -1,11 +1,13 @@
+#include "clouds.h"
+
 #include <string.h>
 #include <math.h>
 
+#include "lighting.h"
 #include "shared/types.h"
 #include "shared/functions.h"
 #include "shared/constants.h"
 #include "shared/globals.h"
-#include "clouds.h"
 
 #define MAX_LAYERS 10
 
@@ -378,22 +380,26 @@ static int _findSegments(CloudsDefinition* definition, CloudsQuality* quality, V
     return segment_count;
 }
 
-static Color _applyLayerLighting(CloudsDefinition* definition, CloudsQuality* quality, Vector3 position, Color base, double detail)
+typedef struct
+{
+    CloudsDefinition* definition;
+    CloudsQuality* quality;
+    Color base;
+    double detail;
+} LightFilterData;
+
+static Color _lightFilter(Color light, Vector3 location, Vector3 light_location, Vector3 direction_to_light, void* custom_data)
 {
-    Vector3 direction, normal;
     double inside_depth, total_depth;
     CloudSegment segments[20];
     Color result;
+    LightFilterData data;
 
-    normal = _getNormal(definition, position, 0.5);
-    normal = v3Add(normal, _getNormal(definition, position, 0.2));
-    normal = v3Add(normal, _getNormal(definition, position, 0.1));
-    result = lightingApply(position, normal, 0.0, base, 0.3, 0.1);
+    data = *((LightFilterData*)custom_data);
+    data.detail = (data.detail < 0.1) ? 0.1 : data.detail;
 
-    direction = sun_direction_inv;
-    detail = (detail < 0.1) ? 0.1 : detail;
     /* FIXME Dont hard-code max_total_length */
-    _findSegments(definition, quality, position, direction, detail, 20, 50.0, 300.0, &inside_depth, &total_depth, segments);
+    _findSegments(data.definition, data.quality, location, direction_to_light, data.detail, 20, 50.0, 300.0, &inside_depth, &total_depth, segments);
 
     inside_depth *= 0.02;
     if (inside_depth > 1.0)
@@ -401,13 +407,40 @@ static Color _applyLayerLighting(CloudsDefinition* definition, CloudsQuality* qu
         inside_depth = 1.0;
     }
 
-    result.r = base.r * sun_color_lum * (0.9 - 0.2 * inside_depth) + result.r * (0.1 + 0.1 * inside_depth) + (0.1 - inside_depth * 0.1) * sun_color_lum;
-    result.g = base.g * sun_color_lum * (0.9 - 0.2 * inside_depth) + result.g * (0.1 + 0.1 * inside_depth) + (0.1 - inside_depth * 0.1) * sun_color_lum;
-    result.b = base.b * sun_color_lum * (0.9 - 0.2 * inside_depth) + result.b * (0.1 + 0.1 * inside_depth) + (0.1 - inside_depth * 0.1) * sun_color_lum;
+    result.r = data.base.r * sun_color_lum * (0.9 - 0.2 * inside_depth) + result.r * (0.1 + 0.1 * inside_depth) + (0.1 - inside_depth * 0.1) * sun_color_lum;
+    result.g = data.base.g * sun_color_lum * (0.9 - 0.2 * inside_depth) + result.g * (0.1 + 0.1 * inside_depth) + (0.1 - inside_depth * 0.1) * sun_color_lum;
+    result.b = data.base.b * sun_color_lum * (0.9 - 0.2 * inside_depth) + result.b * (0.1 + 0.1 * inside_depth) + (0.1 - inside_depth * 0.1) * sun_color_lum;
 
     return result;
 }
 
+static Color _applyLayerLighting(CloudsDefinition* definition, CloudsQuality* quality, Vector3 position, Color base, double detail)
+{
+    Vector3 normal;
+    ReceiverMaterial material;
+    LightingEnvironment lighting_environment;
+    LightFilterData data;
+
+    normal = _getNormal(definition, position, 0.5);
+    normal = v3Add(normal, _getNormal(definition, position, 0.2));
+    normal = v3Add(normal, _getNormal(definition, position, 0.1));
+    //normal = v3Normalize(normal);
+
+    data.definition = definition;
+    data.quality = quality;
+    data.detail = detail;
+    data.base = base;
+
+    lighting_environment.filter = _lightFilter;
+    lighting_environment.custom_data = &data;
+
+    material.base = base;
+    material.reflection = 0.3;
+    material.shininess = 0.1;
+
+    return lightingApplyCustom(position, normal, material, NULL, NULL, &lighting_environment);
+}
+
 Color cloudsGetColorCustom(Vector3 start, Vector3 end, CloudsDefinition* definition, CloudsQuality* quality, CloudsEnvironment* environment)
 {
     int i, segment_count;
diff --git a/lib_paysages/lighting.c b/lib_paysages/lighting.c
index 2757da3..6c525b7 100644
--- a/lib_paysages/lighting.c
+++ b/lib_paysages/lighting.c
@@ -1,25 +1,173 @@
+#include "lighting.h"
+
 #include <stdlib.h>
 #include <math.h>
+#include <unistd.h>
+#include <string.h>
 
 #include "shared/types.h"
 #include "shared/functions.h"
 #include "shared/constants.h"
 #include "shared/globals.h"
 
-static Color sun_color;
-double sun_color_lum;
-Vector3 sun_direction;
-Vector3 sun_direction_inv;
+static LightingDefinition _definition;
+static LightingQuality _quality;
+static LightingEnvironment _environment;
+
+static LightDefinition _LIGHT_NULL;
+
+static Color _standardFilter(Color light, Vector3 location, Vector3 light_location, Vector3 direction_to_light, void* custom_data)
+{
+    // TODO Find shadows
+    return light;
+}
+
+void lightingInit()
+{
+    _definition = lightingCreateDefinition();
+
+    _environment.filter = _standardFilter;
+    _environment.custom_data = NULL;
+
+    _LIGHT_NULL.color = COLOR_BLACK;
+    _LIGHT_NULL.direction.x = 0.0;
+    _LIGHT_NULL.direction.y = 1.0;
+    _LIGHT_NULL.direction.z = 0.0;
+}
 
 void lightingSave(FILE* f)
 {
+    // TODO
 }
 
 void lightingLoad(FILE* f)
 {
+    // TODO
 }
 
-void lightingSetSunDirection(double x, double y, double z)
+LightingDefinition lightingCreateDefinition()
+{
+    LightingDefinition definition;
+
+    definition.autosetfromsky = 0;
+    definition.nblights = 0;
+    definition._nbautolights = 0;
+
+    return definition;
+}
+
+void lightingDeleteDefinition(LightingDefinition definition)
+{
+}
+
+void lightingCopyDefinition(LightingDefinition source, LightingDefinition* destination)
+{
+    *destination = source;
+}
+
+void lightingSetDefinition(LightingDefinition definition)
+{
+    lightingCopyDefinition(definition, &_definition);
+}
+
+LightingDefinition lightingGetDefinition()
+{
+    return _definition;
+}
+
+void lightingValidateDefinition(LightingDefinition* definition)
+{
+    if (!definition)
+    {
+        lightingValidateDefinition(&_definition);
+    }
+
+    if (definition->autosetfromsky)
+    {
+        // TODO Get lights from sky
+    }
+    else
+    {
+        definition->_nbautolights = 0;
+    }
+}
+
+int lightingGetLightCount(LightingDefinition* definition)
+{
+    return definition->nblights;
+}
+
+LightDefinition lightingGetLight(LightingDefinition* definition, int light)
+{
+    if (light >= 0 && light < definition->nblights)
+    {
+        return definition->lights[light];
+    }
+    else
+    {
+        return _LIGHT_NULL;
+    }
+}
+
+int lightingAddLight(LightingDefinition* definition, LightDefinition light)
+{
+    if (definition->nblights < MAX_LIGHTS)
+    {
+        definition->lights[definition->nblights] = light;
+        return definition->nblights++;
+    }
+    else
+    {
+        return -1;
+    }
+}
+
+void lightingDeleteLight(LightingDefinition* definition, int light)
+{
+    if (light >= 0 && light < definition->nblights)
+    {
+        if (definition->nblights > 1 && light < definition->nblights - 1)
+        {
+            memmove(definition->lights + light, definition->lights + light + 1, sizeof(LightDefinition) * definition->nblights - light - 1);
+        }
+        definition->nblights--;
+    }
+}
+
+void lightingSetQuality(LightingQuality quality)
+{
+    _quality = quality;
+}
+
+LightingQuality lightingGetQuality()
+{
+    return _quality;
+}
+
+Color lightingApplyCustom(Vector3 location, Vector3 normal, ReceiverMaterial material, LightingDefinition* definition, LightingQuality* quality, LightingEnvironment* environment)
+{
+    if (!definition)
+    {
+        definition = &_definition;
+    }
+    if (!quality)
+    {
+        quality = &_quality;
+    }
+    if (!environment)
+    {
+        environment = &_environment;
+    }
+
+    return COLOR_RED;
+}
+
+Color lightingApply(Vector3 location, Vector3 normal, ReceiverMaterial material)
+{
+    return lightingApplyCustom(location, normal, material, &_definition, &_quality, &_environment);
+}
+
+/*void lightingSetSunDirection(double x, double y, double z)
 {
     sun_direction.x = x;
     sun_direction.y = y;
@@ -44,15 +192,15 @@ Color lightingApply(Vector3 location, Vector3 normal, double shadowing, Color ba
     Color result, light;
     double ambient, diffuse, specular;
     Vector3 view, reflect;
-    
+
     light.r = sun_color.r * (1.0 - 0.4 * shadowing);
     light.g = sun_color.g * (1.0 - 0.4 * shadowing);
     light.b = sun_color.b * (1.0 - 0.4 * shadowing);
-    
+
     normal = v3Normalize(normal);
     view = v3Normalize(v3Sub(location, camera_location));
     reflect = v3Sub(v3Scale(normal, 2.0 * v3Dot(sun_direction_inv, normal)), sun_direction_inv);
-    
+
     ambient = 0.2;
     diffuse = v3Dot(sun_direction_inv, normal);
     diffuse = pow(diffuse * 0.5 + 0.5, 2.0) * (1.0 - shadowing) + (diffuse * 0.5 + 0.3) * shadowing;
@@ -77,6 +225,6 @@ Color lightingApply(Vector3 location, Vector3 normal, double shadowing, Color ba
     result.g = base.g * ambient + base.g * diffuse * light.g + base.g * specular * light.g;
     result.b = base.b * ambient + base.b * diffuse * light.b + base.b * specular * light.b;
     result.a = base.a;
-    
+
     return result;
-}
+}*/
diff --git a/lib_paysages/lighting.h b/lib_paysages/lighting.h
new file mode 100644
index 0000000..036c54c
--- /dev/null
+++ b/lib_paysages/lighting.h
@@ -0,0 +1,75 @@
+#ifndef _PAYSAGES_LIGHTING_H_
+#define _PAYSAGES_LIGHTING_H_
+
+#include "shared/types.h"
+#include <stdio.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define MAX_LIGHTS 10
+
+typedef struct
+{
+    Vector3 direction;
+    Color color;
+    double maxshadow;
+} LightDefinition;
+
+typedef struct
+{
+    int autosetfromsky;
+    int nblights;
+    LightDefinition lights[MAX_LIGHTS];
+    int _nbautolights;
+    LightDefinition _autolights[MAX_LIGHTS];
+} LightingDefinition;
+
+typedef struct
+{
+    int unused;
+} LightingQuality;
+
+typedef Color (*LightFilter)(Color light, Vector3 location, Vector3 light_location, Vector3 direction_to_light, void* custom_data);
+
+typedef struct
+{
+    LightFilter filter;
+    void* custom_data;
+} LightingEnvironment;
+
+typedef struct
+{
+    Color base;
+    double reflection;
+    double shininess;
+} ReceiverMaterial;
+
+void lightingInit();
+void lightingSave(FILE* f);
+void lightingLoad(FILE* f);
+
+LightingDefinition lightingCreateDefinition();
+void lightingDeleteDefinition(LightingDefinition definition);
+void lightingCopyDefinition(LightingDefinition source, LightingDefinition* destination);
+void lightingSetDefinition(LightingDefinition definition);
+LightingDefinition lightingGetDefinition();
+void lightingValidateDefinition(LightingDefinition* definition);
+
+int lightingGetLightCount(LightingDefinition* definition);
+LightDefinition lightingGetLight(LightingDefinition* definition, int light);
+int lightingAddLight(LightingDefinition* definition, LightDefinition light);
+void lightingDeleteLight(LightingDefinition* definition, int light);
+
+void lightingSetQuality(LightingQuality quality);
+LightingQuality lightingGetQuality();
+
+Color lightingApplyCustom(Vector3 location, Vector3 normal, ReceiverMaterial material, LightingDefinition* definition, LightingQuality* quality, LightingEnvironment* environment);
+Color lightingApply(Vector3 location, Vector3 normal, ReceiverMaterial material);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
diff --git a/lib_paysages/main.c b/lib_paysages/main.c
index 84a3a91..0f39193 100644
--- a/lib_paysages/main.c
+++ b/lib_paysages/main.c
@@ -1,8 +1,5 @@
 #include <stdio.h>
 #include <stdlib.h>
-#include <time.h>
-#include <math.h>
-#include <string.h>
 
 #include "IL/il.h"
 #include "IL/ilu.h"
@@ -12,7 +9,13 @@
 #include "shared/functions.h"
 #include "shared/globals.h"
 #include "shared/system.h"
+
 #include "terrain.h"
+#include "water.h"
+#include "lighting.h"
+#include "textures.h"
+#include "sky.h"
+#include "clouds.h"
 
 void paysagesInit()
 {
@@ -24,11 +27,17 @@ void paysagesInit()
     cameraSetTarget(0.0, 5.0, 0.0);
 
     autoInit();
+    skyInit();
+    terrainInit();
+    texturesInit();
+    waterInit();
+    lightingInit();
+    renderInit();
 
     autoSetRenderQuality(5);
     autoGenRealisticLandscape(0);
     autoSetDaytime(8, 30);
-    
+
     // DEBUG
     /*double last_height, height, x;
     last_height = height = 0.0;
@@ -42,3 +51,39 @@ void paysagesInit()
     cameraSetLocation(x - 2.0, height, 0.0);
     cameraSetTarget(x - 1.0, height, 0.0);*/
 }
+
+void paysagesSave(char* filepath)
+{
+    FILE* f = fopen(filepath, "wb");
+
+    cameraSave(f);
+    cloudsSave(f);
+    fogSave(f);
+    renderSave(f);
+    skySave(f);
+    terrainSave(f);
+    texturesSave(f);
+    waterSave(f);
+
+    lightingSave(f);
+
+    fclose(f);
+}
+
+void paysagesLoad(char* filepath)
+{
+    FILE* f = fopen(filepath, "rb");
+
+    cameraLoad(f);
+    cloudsLoad(f);
+    fogLoad(f);
+    renderLoad(f);
+    skyLoad(f);
+    terrainLoad(f);
+    texturesLoad(f);
+    waterLoad(f);
+
+    lightingLoad(f);
+
+    fclose(f);
+}
diff --git a/lib_paysages/noise.c b/lib_paysages/noise.c
index 3ff179a..b0066cc 100644
--- a/lib_paysages/noise.c
+++ b/lib_paysages/noise.c
@@ -180,13 +180,13 @@ void noiseAddLevel(NoiseGenerator* generator, NoiseLevel level)
 void noiseAddLevelSimple(NoiseGenerator* generator, double scaling, double height)
 {
     NoiseLevel level;
-    
+
     level.scaling = scaling;
     level.height = height;
     level.xoffset = toolsRandom();
     level.yoffset = toolsRandom();
     level.zoffset = toolsRandom();
-    
+
     noiseAddLevel(generator, level);
 }
 
@@ -211,12 +211,24 @@ void noiseAddLevels(NoiseGenerator* generator, int level_count, NoiseLevel start
 void noiseAddLevelsSimple(NoiseGenerator* generator, int level_count, double scaling, double height)
 {
     NoiseLevel level;
-    
+
     level.scaling = scaling;
     level.height = height;
     noiseAddLevels(generator, level_count, level, 0.5, 0.5, 1);
 }
 
+void noiseRemoveLevel(NoiseGenerator* generator, int level)
+{
+    if (level >= 0 && level < generator->level_count)
+    {
+        if (generator->level_count > 1 && level < generator->level_count - 1)
+        {
+            memmove(generator->levels + level, generator->levels + level + 1, sizeof(NoiseLevel) * (generator->level_count - level - 1));
+        }
+        generator->level_count--;
+    }
+}
+
 int noiseGetLevel(NoiseGenerator* generator, int level, NoiseLevel* params)
 {
     if (level >= 0 && level < generator->level_count)
@@ -241,13 +253,13 @@ void noiseSetLevel(NoiseGenerator* generator, int level, NoiseLevel params)
 void noiseSetLevelSimple(NoiseGenerator* generator, int level, double scaling, double height)
 {
     NoiseLevel params;
-    
+
     params.scaling = scaling;
     params.height = height;
     params.xoffset = toolsRandom();
     params.yoffset = toolsRandom();
     params.zoffset = toolsRandom();
-    
+
     noiseSetLevel(generator, level, params);
 }
 
diff --git a/lib_paysages/render.c b/lib_paysages/render.c
index af0d262..b491a1d 100644
--- a/lib_paysages/render.c
+++ b/lib_paysages/render.c
@@ -56,6 +56,7 @@ void renderLoad(FILE* f)
 void renderInit()
 {
     _lock = mutexCreate();
+    renderSetBackgroundColor(&COLOR_BLACK);
 }
 
 void renderSetSize(int width, int height)
@@ -263,12 +264,12 @@ static void _processDirtyPixels()
 static void _setAllDirty()
 {
     int x, y;
-    
+
     _dirty_left = 0;
     _dirty_right = render_width - 1;
     _dirty_down = 0;
     _dirty_up = render_height - 1;
-    
+
     for (y = _dirty_down; y <= _dirty_up; y++)
     {
         for (x = _dirty_left; x <= _dirty_right; x++)
@@ -799,10 +800,10 @@ void renderSetPreviewCallbacks(PreviewCallbackResize resize, PreviewCallbackClea
     _cb_preview_clear = clear ? clear : _previewClear;
     _cb_preview_draw = draw ? draw : _previewDraw;
     _cb_preview_update = update ? update : _previewUpdate;
-    
+
     _cb_preview_resize(render_width, render_height);
     _cb_preview_clear(background_color);
-    
+
     _setAllDirty();
     _processDirtyPixels();
 
diff --git a/lib_paysages/shared/functions.h b/lib_paysages/shared/functions.h
index 09bb827..8a15581 100644
--- a/lib_paysages/shared/functions.h
+++ b/lib_paysages/shared/functions.h
@@ -9,6 +9,8 @@ extern "C" {
 #include <stdio.h>
 
 void paysagesInit();
+void paysagesSave(char* filepath);
+void paysagesLoad(char* filepath);
 
 /* array.c */
 void arrayCreate(Array* array, int item_size);
@@ -21,8 +23,6 @@ void arrayClear(Array* array);
 
 /* auto.c */
 void autoInit();
-void autoSave(char* filepath);
-void autoLoad(char* filepath);
 void autoSetDaytime(int hour, int minute);
 void autoSetDaytimeFraction(double daytime);
 void autoSetRenderQuality(int quality);
@@ -97,14 +97,6 @@ void fogSetColor(Color col);
 void fogSetDistance(double near, double far);
 Color fogApplyToLocation(Vector3 location, Color base);
 
-/* lighting.c */
-void lightingSave(FILE* f);
-void lightingLoad(FILE* f);
-void lightingSetSunDirection(double x, double y, double z);
-void lightingSetSunAngle(double hor, double ver);
-void lightingSetSunColor(Color col);
-Color lightingApply(Vector3 location, Vector3 normal, double shadowing, Color base, double reflection, double shininess);
-
 /* noise.c */
 NoiseGenerator* noiseCreateGenerator();
 void noiseDeleteGenerator(NoiseGenerator* generator);
@@ -120,6 +112,7 @@ void noiseAddLevel(NoiseGenerator* generator, NoiseLevel level);
 void noiseAddLevelSimple(NoiseGenerator* generator, double scaling, double height);
 void noiseAddLevels(NoiseGenerator* generator, int level_count, NoiseLevel start_level, double scaling_factor, double height_factor, int randomize_offset);
 void noiseAddLevelsSimple(NoiseGenerator* generator, int level_count, double scaling, double height);
+void noiseRemoveLevel(NoiseGenerator* generator, int level);
 int noiseGetLevel(NoiseGenerator* generator, int level, NoiseLevel* params);
 void noiseSetLevel(NoiseGenerator* generator, int level, NoiseLevel params);
 void noiseSetLevelSimple(NoiseGenerator* generator, int level, double scaling, double height);
diff --git a/lib_paysages/terrain.c b/lib_paysages/terrain.c
index 892840c..362c6a2 100644
--- a/lib_paysages/terrain.c
+++ b/lib_paysages/terrain.c
@@ -20,12 +20,14 @@ void terrainInit()
 {
     _definition = terrainCreateDefinition();
     _max_height = noiseGetMaxValue(_definition.height_noise);
+
+    _environment.toggle_fog = 1;
 }
 
 void terrainSave(FILE* f)
 {
     int i;
-    
+
     noiseSave(_definition.height_noise, f);
     toolsSaveInt(f, _definition.height_modifiers_count);
     for (i = 0; i < _definition.height_modifiers_count; i++)
@@ -37,7 +39,7 @@ void terrainSave(FILE* f)
 void terrainLoad(FILE* f)
 {
     int i;
-    
+
     noiseLoad(_definition.height_noise, f);
     _max_height = noiseGetMaxValue(_definition.height_noise);
 
@@ -56,17 +58,17 @@ void terrainLoad(FILE* f)
 TerrainDefinition terrainCreateDefinition()
 {
     TerrainDefinition definition;
-    
+
     definition.height_noise = noiseCreateGenerator();
     definition.height_modifiers_count = 0;
-     
+
     return definition;
 }
 
 void terrainDeleteDefinition(TerrainDefinition definition)
 {
     int i;
-    
+
     noiseDeleteGenerator(definition.height_noise);
     for (i = 0; i < definition.height_modifiers_count; i++)
     {
@@ -77,9 +79,9 @@ void terrainDeleteDefinition(TerrainDefinition definition)
 void terrainCopyDefinition(TerrainDefinition source, TerrainDefinition* destination)
 {
     int i;
-    
+
     noiseCopy(source.height_noise, destination->height_noise);
-    
+
     for (i = 0; i < destination->height_modifiers_count; i++)
     {
         modifierDelete(destination->height_modifiers[i]);
@@ -138,16 +140,16 @@ static inline double _getHeight(TerrainDefinition* definition, double x, double
 {
     Vector3 location;
     int i;
-    
+
     location.x = x;
     location.y = noiseGet2DDetail(definition->height_noise, x, z, detail);
     location.z = z;
-    
+
     for (i = 0; i < definition->height_modifiers_count; i++)
     {
         location = modifierApply(definition->height_modifiers[i], location);
     }
-    
+
     return location.y;
 }
 
@@ -214,13 +216,15 @@ double terrainGetShadow(Vector3 start, Vector3 direction)
     }
 }
 
-static Color _getColor(TerrainDefinition* definition, Vector3 point, double precision)
+static Color _getColor(TerrainDefinition* definition, TerrainEnvironment* environment, Vector3 point, double precision)
 {
     Color color;
 
-    /* FIXME Environment for textures should be customized */
     color = texturesGetColor(point);
-    color = fogApplyToLocation(point, color);
+    if (environment->toggle_fog)
+    {
+        color = fogApplyToLocation(point, color);
+    }
     //color = cloudsApplySegmentResult(color, camera_location, point);
 
     return color;
@@ -248,7 +252,7 @@ int terrainProjectRay(Vector3 start, Vector3 direction, Vector3* hit_point, Colo
         {
             start.y = height;
             *hit_point = start;
-            *hit_color = _getColor(&_definition, start, inc_value);
+            *hit_color = _getColor(&_definition, &_environment, start, inc_value);
             return 1;
         }
 
@@ -279,7 +283,7 @@ static int _postProcessFragment(RenderFragment* fragment)
 
     point = _getPoint(&_definition, point.x, point.z, precision);
 
-    fragment->vertex.color = _getColor(&_definition, point, precision);
+    fragment->vertex.color = _getColor(&_definition, &_environment, point, precision);
 
     return 1;
 }
@@ -324,7 +328,20 @@ double terrainGetHeightNormalized(double x, double z)
 
 Color terrainGetColorCustom(double x, double z, double detail, TerrainDefinition* definition, TerrainQuality* quality, TerrainEnvironment* environment)
 {
-    return _getColor(definition, _getPoint(definition, x, z, detail), detail);
+    if (!definition)
+    {
+        definition = &_definition;
+    }
+    if (!quality)
+    {
+        quality = &_quality;
+    }
+    if (!environment)
+    {
+        environment = &_environment;
+    }
+
+    return _getColor(definition, environment, _getPoint(definition, x, z, detail), detail);
 }
 
 Color terrainGetColor(double x, double z, double detail)
@@ -351,7 +368,7 @@ void terrainRender(RenderProgressCallback callback)
         {
             return;
         }
-        
+
         for (i = 0; i < chunk_count - 1; i++)
         {
             _renderQuad(cx - radius_ext + chunk_size * i, cz - radius_ext, chunk_size);
diff --git a/lib_paysages/terrain.h b/lib_paysages/terrain.h
index fed8bd4..006911e 100644
--- a/lib_paysages/terrain.h
+++ b/lib_paysages/terrain.h
@@ -26,7 +26,7 @@ typedef struct
 
 typedef struct
 {
-    int unused;
+    int toggle_fog;
 } TerrainEnvironment;
 
 void terrainInit();
diff --git a/lib_paysages/water.c b/lib_paysages/water.c
index ced1df8..2373882 100644
--- a/lib_paysages/water.c
+++ b/lib_paysages/water.c
@@ -5,6 +5,7 @@
 
 #include "water.h"
 #include "terrain.h"
+#include "lighting.h"
 
 #include <math.h>
 
@@ -80,6 +81,9 @@ WaterDefinition waterCreateDefinition()
     result.main_color = COLOR_BLACK;
     result.depth_color = COLOR_BLACK;
     result.height = -1000.0;
+    result.reflection = 0.0;
+    result.transparency = 0.0;
+    result.transparency_depth = 0.0;
     result.waves_noise = noiseCreateGenerator();
     result.waves_noise_height = 0.02;
     result.waves_noise_scale = 0.2;
@@ -181,7 +185,8 @@ WaterResult waterGetColorCustom(Vector3 location, Vector3 look, WaterDefinition*
     RayCastingResult refracted;
     Vector3 normal;
     Color color;
-    double shadowed, detail, depth;
+    ReceiverMaterial material;
+    double detail, depth;
 
     if (definition == NULL)
     {
@@ -231,15 +236,10 @@ WaterResult waterGetColorCustom(Vector3 location, Vector3 look, WaterDefinition*
     color.b = definition->main_color.b * (1.0 - definition->transparency) + result.reflected.b * definition->reflection + result.refracted.b * definition->transparency;
     color.a = 1.0;
 
-    if (environment->toggle_shadows)
-    {
-        shadowed = terrainGetShadow(location, sun_direction_inv);
-    }
-    else
-    {
-        shadowed = 0.0;
-    }
-    color = lightingApply(location, normal, shadowed, color, 0.8, 0.6);
+    material.base = color;
+    material.reflection = 0.8;
+    material.shininess = 0.6;
+    color = lightingApplyCustom(location, normal, material, environment->lighting_definition, NULL, environment->lighting_environment);
     if (environment->toggle_fog)
     {
         color = fogApplyToLocation(location, color);
diff --git a/lib_paysages/water.h b/lib_paysages/water.h
index bd8cd41..ae3fdf3 100644
--- a/lib_paysages/water.h
+++ b/lib_paysages/water.h
@@ -2,6 +2,7 @@
 #define _PAYSAGES_WATER_H_
 
 #include "shared/types.h"
+#include "lighting.h"
 #include <stdio.h>
 
 #ifdef __cplusplus
@@ -32,7 +33,8 @@ typedef struct
     RayCastingFunction reflection_function;
     RayCastingFunction refraction_function;
     int toggle_fog;
-    int toggle_shadows;
+    LightingDefinition* lighting_definition;
+    LightingEnvironment* lighting_environment;
 } WaterEnvironment;
 
 typedef struct