diff --git a/gui_qt/baseexplorerchunk.cpp b/gui_qt/baseexplorerchunk.cpp
index 53cabce..9cf9b64 100644
--- a/gui_qt/baseexplorerchunk.cpp
+++ b/gui_qt/baseexplorerchunk.cpp
@@ -64,7 +64,7 @@ bool BaseExplorerChunk::maintain()
         _texture_changed = true;
         _lock_data.unlock();
 
-        if (_texture_current_size < 8 && _texture_current_size < _texture_max_size)
+        if (_texture_current_size < 4 && _texture_current_size < _texture_max_size)
         {
             maintain();
         }
diff --git a/gui_qt/dialogrender.cpp b/gui_qt/dialogrender.cpp
index b809f54..f818f29 100644
--- a/gui_qt/dialogrender.cpp
+++ b/gui_qt/dialogrender.cpp
@@ -6,6 +6,10 @@
 #include <QColor>
 #include <QPainter>
 #include <QMessageBox>
+#include <QFileDialog>
+#include <QMessageBox>
+#include <QListWidget>
+#include <QPushButton>
 #include "tools.h"
 
 #include "../lib_paysages/scenery.h"
@@ -26,7 +30,6 @@ static void _renderStart(int width, int height, Color background)
 
 static void _renderDraw(int x, int y, Color col)
 {
-    col = colorProfileApply(_current_dialog->_hdr_profile, col);
     _current_dialog->pixbuf->setPixel(x, _current_dialog->pixbuf->height() - 1 - y, colorToQColor(col).rgb());
 }
 
@@ -80,8 +83,6 @@ DialogRender::DialogRender(QWidget *parent, Renderer* renderer):
     _render_thread = NULL;
     _renderer = renderer;
 
-    _hdr_profile = colorProfileCreate();
-
     setModal(true);
     setWindowTitle(tr("Paysages 3D - Render"));
     setLayout(new QVBoxLayout());
@@ -92,6 +93,7 @@ DialogRender::DialogRender(QWidget *parent, Renderer* renderer):
     _scroll->setWidget(area);
     layout()->addWidget(_scroll);
 
+    // Status bar
     _info = new QWidget(this);
     _info->setLayout(new QHBoxLayout());
     layout()->addWidget(_info);
@@ -106,8 +108,31 @@ DialogRender::DialogRender(QWidget *parent, Renderer* renderer):
     _progress->setValue(0);
     _info->layout()->addWidget(_progress);
 
+    // Action bar
+    _actions = new QWidget(this);
+    _actions->setLayout(new QHBoxLayout());
+    layout()->addWidget(_actions);
+
+    _actions->layout()->addWidget(new QLabel(tr("Tone-mapping: "), _actions));
+    _tonemapping_control = new QComboBox(_actions);
+    _tonemapping_control->addItems(QStringList(tr("Uncharted")) << tr("Reinhard"));
+    _actions->layout()->addWidget(_tonemapping_control);
+
+    _actions->layout()->addWidget(new QLabel(tr("Exposure: "), _actions));
+    _exposure_control = new QSlider(Qt::Horizontal, _actions);
+    _exposure_control->setRange(0, 1000);
+    _exposure_control->setValue(200);
+    _actions->layout()->addWidget(_exposure_control);
+
+    _save_button = new QPushButton(QIcon("images/save.png"), tr("Save picture"), _actions);
+    _actions->layout()->addWidget(_save_button);
+
+    // Connections
     connect(this, SIGNAL(renderSizeChanged(int, int)), this, SLOT(applyRenderSize(int, int)));
     connect(this, SIGNAL(progressChanged(double)), this, SLOT(applyProgress(double)));
+    connect(_save_button, SIGNAL(clicked()), this, SLOT(saveRender()));
+    connect(_tonemapping_control, SIGNAL(currentIndexChanged(int)), this, SLOT(toneMappingChanged()));
+    connect(_exposure_control, SIGNAL(valueChanged(int)), this, SLOT(toneMappingChanged()));
 }
 
 DialogRender::~DialogRender()
@@ -119,7 +144,6 @@ DialogRender::~DialogRender()
 
         delete _render_thread;
     }
-    colorProfileDelete(_hdr_profile);
     delete pixbuf;
     delete pixbuf_lock;
 }
@@ -147,6 +171,33 @@ void DialogRender::startRender(RenderParams params)
     exec();
 }
 
+void DialogRender::saveRender()
+{
+    QString filepath;
+
+    filepath = QFileDialog::getSaveFileName(this, tr("Paysages 3D - Choose a filename to save the last render"), QString(), tr("Images (*.png *.jpg)"));
+    if (!filepath.isNull())
+    {
+        if (!filepath.toLower().endsWith(".jpg") && !filepath.toLower().endsWith(".jpeg") && !filepath.toLower().endsWith(".png"))
+        {
+            filepath = filepath.append(".png");
+        }
+        if (renderSaveToFile(_renderer->render_area, (char*)filepath.toStdString().c_str()))
+        {
+            QMessageBox::information(this, "Message", QString(tr("The picture %1 has been saved.")).arg(filepath));
+        }
+        else
+        {
+            QMessageBox::critical(this, "Message", QString(tr("Can't write to file : %1")).arg(filepath));
+        }
+    }
+}
+
+void DialogRender::toneMappingChanged()
+{
+    renderSetToneMapping(_renderer->render_area, (ToneMappingOperator)_tonemapping_control->currentIndex(), ((double)_exposure_control->value()) * 0.01);
+}
+
 void DialogRender::loadLastRender()
 {
     //applyRenderSize(_renderer->render_width, _renderer->render_height);
diff --git a/gui_qt/dialogrender.h b/gui_qt/dialogrender.h
index 6a33828..b8a81ce 100644
--- a/gui_qt/dialogrender.h
+++ b/gui_qt/dialogrender.h
@@ -6,6 +6,8 @@
 #include <QThread>
 #include <QProgressBar>
 #include <QScrollArea>
+#include <QSlider>
+#include <QComboBox>
 #include <QLabel>
 #include <QMutex>
 #include "../lib_paysages/renderer.h"
@@ -26,11 +28,12 @@ public:
     QImage* pixbuf;
     QMutex* pixbuf_lock;
     QWidget* area;
-    ColorProfile* _hdr_profile;
 
 private slots:
     void applyRenderSize(int width, int height);
     void applyProgress(double value);
+    void saveRender();
+    void toneMappingChanged();
 
 signals:
     void renderSizeChanged(int width, int height);
@@ -39,6 +42,10 @@ signals:
 private:
     QScrollArea* _scroll;
     QWidget* _info;
+    QWidget* _actions;
+    QComboBox* _tonemapping_control;
+    QSlider* _exposure_control;
+    QPushButton* _save_button;
     QThread* _render_thread;
     QLabel* _timer;
     Renderer* _renderer;
diff --git a/gui_qt/explorerchunksky.cpp b/gui_qt/explorerchunksky.cpp
index 1f079ac..84721e3 100644
--- a/gui_qt/explorerchunksky.cpp
+++ b/gui_qt/explorerchunksky.cpp
@@ -8,15 +8,21 @@ ExplorerChunkSky::ExplorerChunkSky(Renderer* renderer, double size, SkyboxOrient
 {
     _box_size = size;
     _orientation = orientation;
+    _center = VECTOR_ZERO;
 
     setMaxTextureSize(256);
     maintain();
 }
 
+void ExplorerChunkSky::onCameraEvent(CameraDefinition* camera)
+{
+    _center = camera->location;
+}
+
 void ExplorerChunkSky::onRenderEvent(QGLWidget*)
 {
     double size = _box_size;
-    Vector3 camera = renderer()->getCameraLocation(renderer(), VECTOR_ZERO);
+    Vector3 camera = _center;
 
     glBegin(GL_QUADS);
     switch(_orientation)
@@ -72,14 +78,14 @@ void ExplorerChunkSky::onRenderEvent(QGLWidget*)
             glVertex3d(camera.x + size, camera.y + size, camera.z + size);
             break;
         case SKYBOX_BOTTOM:
-            glTexCoord2d(0.0, 0.0);
+            /*glTexCoord2d(0.0, 0.0);
             glVertex3d(camera.x - size, camera.y - size, camera.z - size);
             glTexCoord2d(0.0, 1.0);
             glVertex3d(camera.x - size, camera.y - size, camera.z + size);
             glTexCoord2d(1.0, 1.0);
             glVertex3d(camera.x + size, camera.y - size, camera.z + size);
             glTexCoord2d(1.0, 0.0);
-            glVertex3d(camera.x + size, camera.y - size, camera.z - size);
+            glVertex3d(camera.x + size, camera.y - size, camera.z - size);*/
             break;
     }
     glEnd();
diff --git a/gui_qt/explorerchunksky.h b/gui_qt/explorerchunksky.h
index 9eeb49d..732a6d5 100644
--- a/gui_qt/explorerchunksky.h
+++ b/gui_qt/explorerchunksky.h
@@ -20,6 +20,7 @@ class ExplorerChunkSky:public BaseExplorerChunk
 public:
     ExplorerChunkSky(Renderer* renderer, double size, SkyboxOrientation orientation);
 
+    void onCameraEvent(CameraDefinition* camera);
     void onRenderEvent(QGLWidget* widget);
     double getDisplayedSizeHint(CameraDefinition* camera);
     Color getTextureColor(double x, double y);
@@ -27,7 +28,7 @@ public:
 private:
     SkyboxOrientation _orientation;
     double _box_size;
-
+    Vector3 _center;
 };
 
 #endif
diff --git a/gui_qt/explorerchunkterrain.cpp b/gui_qt/explorerchunkterrain.cpp
index 79c7c8e..f6af5c9 100644
--- a/gui_qt/explorerchunkterrain.cpp
+++ b/gui_qt/explorerchunkterrain.cpp
@@ -4,13 +4,18 @@
 #include "baseexplorerchunk.h"
 #include "../lib_paysages/camera.h"
 
-ExplorerChunkTerrain::ExplorerChunkTerrain(Renderer* renderer, double x, double z, double size, int nbchunks) : BaseExplorerChunk(renderer)
+ExplorerChunkTerrain::ExplorerChunkTerrain(Renderer* renderer, double x, double z, double size, int nbchunks, double water_height) : BaseExplorerChunk(renderer)
 {
     _startx = x;
     _startz = z;
     _size = size;
     _overall_step = size * (double)nbchunks;
 
+    _distance_to_camera = 0.0;
+
+    _water_height = water_height;
+    _overwater = false;
+
     _tessellation_max_size = 32;
     _tessellation = new double[(_tessellation_max_size + 1) * (_tessellation_max_size + 1)];
     _tessellation_current_size = 0;
@@ -31,6 +36,7 @@ ExplorerChunkTerrain::~ExplorerChunkTerrain()
 void ExplorerChunkTerrain::onResetEvent()
 {
     _tessellation_current_size = 0;
+    _overwater = false;
 }
 
 bool ExplorerChunkTerrain::onMaintainEvent()
@@ -50,6 +56,10 @@ bool ExplorerChunkTerrain::onMaintainEvent()
                 if (_tessellation_current_size == 0 || i % old_tessellation_inc != 0 || j % old_tessellation_inc != 0)
                 {
                     double height = renderer->terrain->getHeight(renderer, _startx + _tessellation_step * (double)i, _startz + _tessellation_step * (double)j, 1);
+                    if (height >= _water_height)
+                    {
+                        _overwater = true;
+                    }
                     _tessellation[j * (_tessellation_max_size + 1) + i] = height;
                 }
             }
@@ -59,7 +69,7 @@ bool ExplorerChunkTerrain::onMaintainEvent()
         _tessellation_current_size = new_tessellation_size;
         _lock_data.unlock();
 
-        if (_tessellation_current_size < 8 && _tessellation_current_size < _tessellation_max_size)
+        if (_tessellation_current_size < 4 && _tessellation_current_size < _tessellation_max_size)
         {
             onMaintainEvent();
         }
@@ -96,6 +106,9 @@ void ExplorerChunkTerrain::onCameraEvent(CameraDefinition* camera)
         _startz -= _overall_step;
         askReset();
     }
+
+    _distance_to_camera = v3Norm(v3Sub(getCenter(), camera->location));
+    
     _lock_data.unlock();
 }
 
@@ -106,7 +119,7 @@ void ExplorerChunkTerrain::onRenderEvent(QGLWidget*)
     double tsize = 1.0 / (double)_tessellation_max_size;
     _lock_data.unlock();
 
-    if (tessellation_size <= 1)
+    if (tessellation_size <= 1 or not _overwater)
     {
         return;
     }
@@ -131,11 +144,16 @@ double ExplorerChunkTerrain::getDisplayedSizeHint(CameraDefinition* camera)
     double distance;
     Vector3 center;
 
+    if (not _overwater)
+    {
+        return -1000.0;
+    }
+
     center = getCenter();
 
     if (cameraIsBoxInView(camera, center, _size, 40.0, _size))
     {
-        distance = v3Norm(v3Sub(camera->location, center));
+        distance = _distance_to_camera;
         distance = distance < 0.1 ? 0.1 : distance;
         return (int)ceil(120.0 - distance / 1.5);
     }
diff --git a/gui_qt/explorerchunkterrain.h b/gui_qt/explorerchunkterrain.h
index 83d8da1..bf47db4 100644
--- a/gui_qt/explorerchunkterrain.h
+++ b/gui_qt/explorerchunkterrain.h
@@ -8,7 +8,7 @@
 class ExplorerChunkTerrain:public BaseExplorerChunk
 {
 public:
-    ExplorerChunkTerrain(Renderer* renderer, double x, double z, double size, int nbchunks);
+    ExplorerChunkTerrain(Renderer* renderer, double x, double z, double size, int nbchunks, double water_height);
     ~ExplorerChunkTerrain();
 
     void onCameraEvent(CameraDefinition* camera);
@@ -26,6 +26,10 @@ private:
     double _size;
     double _overall_step;
 
+    double _distance_to_camera;
+    double _water_height;
+    bool _overwater;
+
     double* _tessellation;
     int _tessellation_max_size;
     int _tessellation_current_size;
diff --git a/gui_qt/formrender.cpp b/gui_qt/formrender.cpp
index aab4235..143481a 100644
--- a/gui_qt/formrender.cpp
+++ b/gui_qt/formrender.cpp
@@ -1,7 +1,5 @@
 #include "formrender.h"
 
-#include <QFileDialog>
-#include <QMessageBox>
 #include "dialogrender.h"
 #include "inputcamera.h"
 #include "tools.h"
@@ -120,8 +118,6 @@ FormRender::FormRender(QWidget *parent) :
     connect(button, SIGNAL(clicked()), this, SLOT(startRender()));
     button = addButton(tr("Show last render"));
     connect(button, SIGNAL(clicked()), this, SLOT(showRender()));
-    button = addButton(tr("Save last render"));
-    connect(button, SIGNAL(clicked()), this, SLOT(saveRender()));
 
     revertConfig();
 }
@@ -215,28 +211,3 @@ void FormRender::showRender()
         delete dialog;
     }
 }
-
-void FormRender::saveRender()
-{
-    if (_renderer_inited)
-    {
-        QString filepath;
-
-        filepath = QFileDialog::getSaveFileName(this, tr("Paysages 3D - Choose a filename to save the last render"), QString(), tr("Images (*.png *.jpg)"));
-        if (!filepath.isNull())
-        {
-            if (!filepath.toLower().endsWith(".jpg") && !filepath.toLower().endsWith(".jpeg") && !filepath.toLower().endsWith(".png"))
-            {
-                filepath = filepath.append(".png");
-            }
-            if (renderSaveToFile(_renderer->render_area, (char*)filepath.toStdString().c_str()))
-            {
-                QMessageBox::information(this, "Message", QString(tr("The picture %1 has been saved.")).arg(filepath));
-            }
-            else
-            {
-                QMessageBox::critical(this, "Message", QString(tr("Can't write to file : %1")).arg(filepath));
-            }
-        }
-    }
-}
diff --git a/gui_qt/formrender.h b/gui_qt/formrender.h
index a99ef0a..0eab0e6 100644
--- a/gui_qt/formrender.h
+++ b/gui_qt/formrender.h
@@ -28,7 +28,6 @@ protected slots:
 private slots:
     void startRender();
     void showRender();
-    void saveRender();
 
 private:
     RenderParams _params;
diff --git a/gui_qt/formwater.cpp b/gui_qt/formwater.cpp
index 6241a1f..a33acd3 100644
--- a/gui_qt/formwater.cpp
+++ b/gui_qt/formwater.cpp
@@ -238,7 +238,7 @@ FormWater::FormWater(QWidget *parent):
     addPreview(previewCoverage, tr("Coverage preview"));
     addPreview(previewColor, tr("Rendered preview"));
 
-    addInputDouble(tr("Height"), &_definition.height, -10.0, 10.0, 0.1, 1.0);
+    addInputDouble(tr("Height"), &_definition.height, -15.0, 15.0, 0.1, 1.0);
     addInputMaterial(tr("Surface material"), &_definition.material);
     addInputColor(tr("Depth color"), &_definition.depth_color);
     addInputDouble(tr("Transparency"), &_definition.transparency, 0.0, 1.0, 0.001, 0.1);
diff --git a/gui_qt/widgetexplorer.cpp b/gui_qt/widgetexplorer.cpp
index b581b1e..4009b3d 100644
--- a/gui_qt/widgetexplorer.cpp
+++ b/gui_qt/widgetexplorer.cpp
@@ -53,6 +53,11 @@ static Color _applyTextures(Renderer* renderer, Vector3 location, double precisi
     return texturesGetColor((TexturesDefinition*)(renderer->customData[1]), renderer, location.x, location.z, precision);
 }
 
+static Vector3 _getCameraLocation(Renderer* renderer, Vector3)
+{
+    return ((CameraDefinition*)renderer->customData[2])->location;
+}
+
 WidgetExplorer::WidgetExplorer(QWidget *parent, CameraDefinition* camera):
     QGLWidget(parent)
 {
@@ -70,8 +75,10 @@ WidgetExplorer::WidgetExplorer(QWidget *parent, CameraDefinition* camera):
     _renderer = sceneryCreateStandardRenderer();
     _renderer->render_quality = 3;
     _renderer->customData[1] = &_textures;
+    _renderer->customData[2] = _base_camera;
     _renderer->customData[3] = &_water;
     _renderer->applyTextures = _applyTextures;
+    _renderer->getCameraLocation = _getCameraLocation;
 
     _inited = false;
     _updated = false;
@@ -100,14 +107,15 @@ void WidgetExplorer::startRendering()
 {
     // Add terrain
     int chunks = 20;
-    double size = 200.0;
+    double size = 400.0;
     double chunksize = size / (double)chunks;
     double start = -size / 2.0;
+    double water_height = _renderer->getWaterHeightInfo(_renderer).base_height;
     for (int i = 0; i < chunks; i++)
     {
         for (int j = 0; j < chunks; j++)
         {
-            ExplorerChunkTerrain* chunk = new ExplorerChunkTerrain(_renderer, start + chunksize * (double)i, start + chunksize * (double)j, chunksize, chunks);
+            ExplorerChunkTerrain* chunk = new ExplorerChunkTerrain(_renderer, start + chunksize * (double)i, start + chunksize * (double)j, chunksize, chunks, water_height);
             _chunks.append(chunk);
             _updateQueue.append(chunk);
         }
@@ -326,7 +334,6 @@ void WidgetExplorer::wheelEvent(QWheelEvent* event)
     {
         cameraStrafeForward(&_current_camera, (double)event->delta() * factor);
         updateGL();
-
     }
     event->accept();
 }
@@ -396,6 +403,7 @@ void WidgetExplorer::paintGL()
     QTime start_time;
     double frame_time;
 
+    cameraCopyDefinition(&_current_camera, &_renderer->render_camera);
     cameraValidateDefinition(&_current_camera, 1);
 
     start_time = QTime::currentTime();
diff --git a/lib_paysages/clouds/definition.c b/lib_paysages/clouds/definition.c
index 9b3c80f..9f60bdb 100644
--- a/lib_paysages/clouds/definition.c
+++ b/lib_paysages/clouds/definition.c
@@ -65,7 +65,8 @@ void cloudsLayerValidateDefinition(CloudsLayerDefinition* definition)
     noiseClearLevels(definition->_edge_noise);
     noiseClearLevels(definition->_coverage_noise);
 
-    noiseAddLevelsSimple(definition->_coverage_noise, 3, 1.0, 0.0, 1.0, 0.0);
+    noiseAddLevelsSimple(definition->_coverage_noise, 2, 10.0, 0.0, 1.0, 0.0);
+    noiseAddLevelsSimple(definition->_coverage_noise, 2, 1.0, 0.0, 1.0, 0.0);
     noiseSetFunctionParams(definition->_coverage_noise, NOISE_FUNCTION_NAIVE, 0.0, 0.0);
     switch (definition->type)
     {
diff --git a/lib_paysages/render.c b/lib_paysages/render.c
index 1aa1853..657f6b6 100644
--- a/lib_paysages/render.c
+++ b/lib_paysages/render.c
@@ -44,6 +44,7 @@ typedef struct
 
 struct RenderArea
 {
+    ColorProfile* hdr_mapping;
     RenderParams params;
     int pixel_count;
     RenderFragment* pixels;
@@ -96,6 +97,7 @@ RenderArea* renderCreateArea()
     RenderArea* result;
 
     result = malloc(sizeof(RenderArea));
+    result->hdr_mapping = colorProfileCreate();
     result->params.width = 1;
     result->params.height = 1;
     result->params.antialias = 1;
@@ -123,6 +125,7 @@ RenderArea* renderCreateArea()
 
 void renderDeleteArea(RenderArea* area)
 {
+    colorProfileDelete(area->hdr_mapping);
     mutexDestroy(area->lock);
     free(area->pixels);
     free(area->scanline_up);
@@ -130,6 +133,14 @@ void renderDeleteArea(RenderArea* area)
     free(area);
 }
 
+static void _setAllDirty(RenderArea* area)
+{
+    area->dirty_left = 0;
+    area->dirty_right = area->params.width * area->params.antialias - 1;
+    area->dirty_down = 0;
+    area->dirty_up = area->params.height * area->params.antialias - 1;
+}
+
 void renderSetParams(RenderArea* area, RenderParams params)
 {
     int width, height;
@@ -155,6 +166,13 @@ void renderSetParams(RenderArea* area, RenderParams params)
     renderClear(area);
 }
 
+void renderSetToneMapping(RenderArea* area, ToneMappingOperator tonemapper, double exposure)
+{
+    colorProfileSetToneMapping(area->hdr_mapping, tonemapper, exposure);
+    _setAllDirty(area);
+    renderUpdate(area);
+}
+
 void renderSetBackgroundColor(RenderArea* area, Color* col)
 {
     area->background_color = *col;
@@ -264,6 +282,8 @@ static inline Color _getFinalPixel(RenderArea* area, int x, int y)
             result.r += col.r / (double)(area->params.antialias * area->params.antialias);
             result.g += col.g / (double)(area->params.antialias * area->params.antialias);
             result.b += col.b / (double)(area->params.antialias * area->params.antialias);
+
+            result = colorProfileApply(area->hdr_mapping, result);
         }
     }
 
@@ -304,14 +324,6 @@ void renderUpdate(RenderArea* area)
     mutexRelease(area->lock);
 }
 
-static void _setAllDirty(RenderArea* area)
-{
-    area->dirty_left = 0;
-    area->dirty_right = area->params.width * area->params.antialias - 1;
-    area->dirty_down = 0;
-    area->dirty_up = area->params.height * area->params.antialias - 1;
-}
-
 static inline unsigned int _pushCallback(RenderArea* area, FragmentCallback callback)
 {
     int i;
diff --git a/lib_paysages/render.h b/lib_paysages/render.h
index d1885b6..b246c06 100644
--- a/lib_paysages/render.h
+++ b/lib_paysages/render.h
@@ -32,6 +32,7 @@ RenderArea* renderCreateArea();
 void renderDeleteArea(RenderArea* area);
 
 void renderSetParams(RenderArea* area, RenderParams params);
+void renderSetToneMapping(RenderArea* area, ToneMappingOperator tonemapper, double exposure);
 void renderSetBackgroundColor(RenderArea* area, Color* col);
 void renderClear(RenderArea* area);
 void renderUpdate(RenderArea* area);
diff --git a/lib_paysages/system.c b/lib_paysages/system.c
index 79d350a..1f87c1e 100644
--- a/lib_paysages/system.c
+++ b/lib_paysages/system.c
@@ -83,6 +83,7 @@ int systemSavePictureFile(const char* filepath, PictureCallbackSavePixel callbac
         for (x = 0; x < width; x++)
         {
             result = callback_pixel(data, x, y);
+            colorNormalize(&result);
             rgba = colorTo32BitRGBA(&result);
             pixels[y * width + x] = rgba;
         }
diff --git a/lib_paysages/terrain/painting.c b/lib_paysages/terrain/painting.c
index ed31f71..bc2a444 100644
--- a/lib_paysages/terrain/painting.c
+++ b/lib_paysages/terrain/painting.c
@@ -9,6 +9,7 @@
 #include <string.h>
 #include <math.h>
 #include "../tools/memory.h"
+#include "../tools.h"
 
 TerrainHeightMap* terrainHeightMapCreate(TerrainDefinition* terrain)
 {
@@ -143,10 +144,35 @@ void terrainHeightmapLoad(PackStream* stream, TerrainHeightMap* heightmap)
 
 static inline int _checkDataHit(TerrainHeightMapChunk* chunk, double x, double z, double* result)
 {
-    if (x > (double)chunk->rect.xstart && x < (double)chunk->rect.xend && z > (double)chunk->rect.zstart && z < (double)chunk->rect.zend)
+    if (x >= (double)chunk->rect.xstart && x <= (double)chunk->rect.xend && z >= (double)chunk->rect.zstart && z <= (double)chunk->rect.zend)
     {
-        /* TODO Get interpolated value */
-        *result = 0.0;
+        double stencil[16];
+        int ix, iz, cx, cz;
+        int xmax = chunk->rect.xsize - 1;
+        int zmax = chunk->rect.zsize - 1;
+        int xlow;
+        int zlow;
+
+        x -= chunk->rect.xstart;
+        z -= chunk->rect.zstart;
+
+        xlow = floor(x);
+        zlow = floor(z);
+
+        for (ix = xlow - 1; ix <= xlow + 2; ix++)
+        {
+            for (iz = zlow - 1; iz <= zlow + 2; iz++)
+            {
+                cx = ix < 0 ? 0 : ix;
+                cx = cx > xmax ? xmax : cx;
+                cz = iz < 0 ? 0 : iz;
+                cz = cz > zmax ? zmax : cz;
+                stencil[(iz - (zlow - 1)) * 4 + ix - (xlow - 1)] = chunk->data[cz * chunk->rect.xsize + cx];
+            }
+        }
+
+        *result = toolsBicubicInterpolate(stencil, x - (double)xlow, z - (double)zlow);
+
         return 1;
     }
     else
@@ -240,7 +266,7 @@ static void _prepareBrushStroke(TerrainHeightMap* heightmap, TerrainBrush* brush
         new_size = sizeof(double) * heightmap->floating_data.rect.xsize * heightmap->floating_data.rect.zsize;
         heightmap->floating_data.data = realloc(heightmap->floating_data.data, new_size);
 
-        _resetRect(heightmap, 0, 0, heightmap->floating_data.rect.xsize - 1, heightmap->floating_data.rect.zsize - 1);
+        _resetRect(heightmap, 0, heightmap->floating_data.rect.xsize - 1, 0, heightmap->floating_data.rect.zsize - 1);
 
         heightmap->floating_used = 1;
     }
diff --git a/lib_paysages/terrain/presets.c b/lib_paysages/terrain/presets.c
index bc95d50..54f8ed5 100644
--- a/lib_paysages/terrain/presets.c
+++ b/lib_paysages/terrain/presets.c
@@ -14,7 +14,9 @@ void terrainAutoPreset(TerrainDefinition* definition, TerrainPreset preset)
         case TERRAIN_PRESET_STANDARD:
             noiseRandomizeOffsets(definition->_height_noise);
             noiseClearLevels(definition->_height_noise);
-            noiseAddLevelsSimple(definition->_height_noise, resolution, pow(2.0, resolution - 1), -12.5, 12.5, 0.5);
+            noiseAddLevelSimple(definition->_height_noise, pow(2.0, resolution + 1), -15.0, 15.0);
+            noiseAddLevelsSimple(definition->_height_noise, resolution - 2, pow(2.0, resolution - 1), -10.0, 10.0, 0.5);
+            noiseNormalizeAmplitude(definition->_height_noise, -15.0, 15.0, 0);
             noiseSetFunctionParams(definition->_height_noise, NOISE_FUNCTION_SIMPLEX, 0.0, 0.0);
             definition->scaling = 1.0;
             definition->height = 1.0;
diff --git a/lib_paysages/tools/color.c b/lib_paysages/tools/color.c
index ba6c688..8144135 100644
--- a/lib_paysages/tools/color.c
+++ b/lib_paysages/tools/color.c
@@ -184,6 +184,8 @@ struct ColorProfile
 {
     double minvalue;
     double maxvalue;
+    Color (*mapper)(Color col, double exposure);
+    double exposure;
 };
 
 ColorProfile* colorProfileCreate()
@@ -192,6 +194,7 @@ ColorProfile* colorProfileCreate()
 
     profile = malloc(sizeof(ColorProfile));
 
+    colorProfileSetToneMapping(profile, TONE_MAPPING_UNCHARTED, 2.0);
     colorProfileClear(profile);
 
     return profile;
@@ -202,6 +205,52 @@ void colorProfileDelete(ColorProfile* profile)
     free(profile);
 }
 
+static inline double _uncharted2Tonemap(double x)
+{
+    double A = 0.15;
+    double B = 0.50;
+    double C = 0.10;
+    double D = 0.20;
+    double E = 0.02;
+    double F = 0.30;
+
+    return ((x*(A*x+C*B)+D*E)/(x*(A*x+B)+D*F))-E/F;
+}
+
+static Color _toneMappingUncharted(Color pixel, double exposure)
+{
+    double W = 11.2;
+    double white_scale = 1.0 / _uncharted2Tonemap(W);
+
+    pixel.r = pow(_uncharted2Tonemap(pixel.r * exposure) * white_scale, 1.0 / 2.2);
+    pixel.g = pow(_uncharted2Tonemap(pixel.g * exposure) * white_scale, 1.0 / 2.2);
+    pixel.b = pow(_uncharted2Tonemap(pixel.b * exposure) * white_scale, 1.0 / 2.2);
+
+    return pixel;
+}
+
+static Color _toneMappingReinhard(Color pixel, double exposure)
+{
+    pixel.r = (pixel.r * exposure) / (1.0 + pixel.r * exposure);
+    pixel.g = (pixel.g * exposure) / (1.0 + pixel.g * exposure);
+    pixel.b = (pixel.b * exposure) / (1.0 + pixel.b * exposure);
+
+    return pixel;
+}
+
+void colorProfileSetToneMapping(ColorProfile* profile, ToneMappingOperator tonemapper, double exposure)
+{
+    if (tonemapper == TONE_MAPPING_REIHNARD)
+    {
+        profile->mapper = _toneMappingReinhard;
+    }
+    else
+    {
+        profile->mapper = _toneMappingUncharted;
+    }
+    profile->exposure = exposure;
+}
+
 void colorProfileSave(PackStream* stream, ColorProfile* profile)
 {
     /* TODO */
@@ -236,37 +285,9 @@ int colorProfileCollect(ColorProfile* profile, Color pixel)
     return changed;
 }
 
-static double _uncharted2Tonemap(double x)
-{
-    double A = 0.15;
-    double B = 0.50;
-    double C = 0.10;
-    double D = 0.20;
-    double E = 0.02;
-    double F = 0.30;
-
-    return ((x*(A*x+C*B)+D*E)/(x*(A*x+B)+D*F))-E/F;
-}
-
 Color colorProfileApply(ColorProfile* profile, Color pixel)
 {
-    /*pixel.r *= 0.4;
-    pixel.g *= 0.4;
-    pixel.b *= 0.4;
-    pixel.r = pixel.r < 1.413 ? pow(pixel.r * 0.38317, 1.0 / 2.2) : 1.0 - exp(-pixel.r);
-    pixel.g = pixel.g < 1.413 ? pow(pixel.g * 0.38317, 1.0 / 2.2) : 1.0 - exp(-pixel.g);
-    pixel.b = pixel.b < 1.413 ? pow(pixel.b * 0.38317, 1.0 / 2.2) : 1.0 - exp(-pixel.b);
-    return pixel;*/
-
-    double exposure_bias = 2.0;
-    double W = 11.2;
-    double white_scale = 1.0 / _uncharted2Tonemap(W);
-
-    pixel.r = pow(_uncharted2Tonemap(pixel.r * exposure_bias) * white_scale, 1.0 / 2.2);
-    pixel.g = pow(_uncharted2Tonemap(pixel.g * exposure_bias) * white_scale, 1.0 / 2.2);
-    pixel.b = pow(_uncharted2Tonemap(pixel.b * exposure_bias) * white_scale, 1.0 / 2.2);
-
-    return pixel;
+    return profile->mapper(pixel, profile->exposure);
 }
 
 /******************************** ColorGradation ********************************/
diff --git a/lib_paysages/tools/color.h b/lib_paysages/tools/color.h
index 53f6acc..31f52a5 100644
--- a/lib_paysages/tools/color.h
+++ b/lib_paysages/tools/color.h
@@ -44,10 +44,17 @@ double colorGetValue(Color* col);
 
 /* HDR profile for tone-mapping */
 typedef struct ColorProfile ColorProfile;
+typedef enum
+{
+    TONE_MAPPING_UNCHARTED,
+    TONE_MAPPING_REIHNARD
+} ToneMappingOperator;
 
 ColorProfile* colorProfileCreate();
 void colorProfileDelete(ColorProfile* profile);
 
+void colorProfileSetToneMapping(ColorProfile* profile, ToneMappingOperator tonemapper, double exposure);
+
 void colorProfileSave(PackStream* stream, ColorProfile* profile);
 void colorProfileLoad(PackStream* stream, ColorProfile* profile);
 
diff --git a/lib_paysages/tools/memory.c b/lib_paysages/tools/memory.c
index 874f772..d8d7616 100644
--- a/lib_paysages/tools/memory.c
+++ b/lib_paysages/tools/memory.c
@@ -1,11 +1,54 @@
 #include "memory.h"
 
 #include <stdlib.h>
+#include <string.h>
 
 void* memory2dRealloc(void* data, int datasize, int oldxsize, int oldysize, int newxsize, int newysize, int xoffset, int yoffset)
 {
-    /* TODO Move remaining part*/
-    return realloc(data, datasize * newxsize * newysize);
+    int xstart, xend, xlen;
+    int ystart, yend, y;
+    void* result = malloc(datasize * newxsize * newysize);
+
+    /* Move remaining part*/
+    ystart = yoffset;
+    yend = yoffset + oldysize;
+    if (yend >= 0 && ystart < newysize)
+    {
+        if (ystart < 0)
+        {
+            ystart = 0;
+        }
+        if (yend > newysize - 1)
+        {
+            yend = newysize - 1;
+        }
+
+        xstart = xoffset;
+        xend = xoffset + oldxsize;
+        if (xend >= 0 && xstart < newxsize)
+        {
+            if (xstart < 0)
+            {
+                xstart = 0;
+            }
+            if (xend > newxsize - 1)
+            {
+                xend = newxsize - 1;
+            }
+
+            xlen = xend - xstart + 1;
+            if (xlen > 0)
+            {
+                for (y = ystart; y <= yend; y++)
+                {
+                    memcpy(result + (y * newxsize + xstart) * datasize, data + ((y - ystart) * oldxsize) * datasize, xlen * datasize);
+                }
+            }
+        }
+    }
+
+    free(data);
+    return result;
 }
 
 void memory2dScrolling(void* data, int datasize, int xsize, int ysize, int xoffset, int yoffset)