paysages : Explorer texturing (WIP).

git-svn-id: https://subversion.assembla.com/svn/thunderk/paysages@324 b1fd45b6-86a6-48da-8261-f70d1f35bdcc

ChangeLog

@@ -1,10 +1,12 @@
 ????-??-?? Technology Preview 2
 -------------------------------
 * Previews scaling is now logarithmic (slower when zoomed).
-* Previews drawing now takes advantage of multiple CPUs.
+* Previews drawing now takes advantage of multiple CPU cores.
 * New texture model (perpendicular displacement and thickness).
 * Added clouds hardness to light.
 * Version management in saved files.
+* Added ground texture and sun location in 3D explorer.
+* 3D explorer now takes advantage of multiple CPU cores.
 
 2012-04-20 Technology Preview 1
 -------------------------------

TODO

@@ -17,12 +17,13 @@ Technology Preview 2 :
    => Improve curve rendering
    => Add axis labels
 - Improve 3d explorer
-   => Store computed vertices in memory, using chunks
-   => Compute the ground texture by chunk
+   => Improve priority rendering (prioritize on screen chunks)
+   => Restore LOD and intelligent poly count
+   => Interrupt chunk rendering when quitting dialog
    => Don't display the water if it's below all ground
-   => Add the sun position
    => Try to overcome the near frustum cutting
    => Disable texture reflection of light (dependant on camera location)
+   => Add toggles (for water...)
 - Water and terrain LOD moves with the camera, fix it like in the wanderer.
 - Pause previews drawing of main window when a dialog is opened.
 - Interrupt preview chunk renderings that will be discarded at commit, or that are no more visible.

gui_qt/wandererchunk.cpp

@@ -25,13 +25,13 @@ WandererChunk::WandererChunk(Renderer* renderer, double x, double z, double size
     _tessellation_current_size = 0;
     _tessellation_step = _size / (double)_tessellation_max_size;
     
-    _texture_max_size = 32;
+    _texture_max_size = 128;
     _texture_current_size = 0;
     _texture = new QImage(1, 1, QImage::Format_ARGB32);
     _texture_id = 0;
     _texture_changed = false;
     
-    maintain(VECTOR_ZERO);
+    maintain();
 }
 
 WandererChunk::~WandererChunk()
@@ -82,10 +82,38 @@ void WandererChunk::render(QGLWidget* widget)
     }
 }
 
-bool WandererChunk::maintain(Vector3 camera_location)
+void WandererChunk::updatePriority(Vector3 camera_location)
+{
+    // Compute new priority
+    _lock_data.lock();
+    if (_tessellation_current_size == _tessellation_max_size && _texture_current_size == _texture_max_size)
+    {
+        _ideal_priority = -1000.0;
+    }
+    else
+    {
+        double distance = v3Norm(v3Sub(camera_location, getCenter()));
+        distance = distance < 0.1 ? 0.1 : distance;
+        _ideal_tessellation = (int)ceil(120.0 - distance / 3.0);
+        _ideal_priority = _ideal_tessellation - _texture_current_size;
+        if (_texture_current_size == 1)
+        {
+            _ideal_priority += 100.0;
+        }
+        else if (distance < 15.0 && _texture_current_size < _texture_max_size)
+        {
+            _ideal_priority += 75.0;
+        }
+        else if (distance < 30.0 && _texture_current_size < _texture_max_size / 2)
+        {
+            _ideal_priority += 50.0;
+        }
+    }
+    _lock_data.unlock();
+}
+
+bool WandererChunk::maintain()
 {
-    bool result;
-    
     if (_tessellation_current_size < _tessellation_max_size || _texture_current_size < _texture_max_size)
     {
         // Improve heightmap resolution
@@ -135,22 +163,12 @@ bool WandererChunk::maintain(Vector3 camera_location)
             _lock_data.unlock();
         }
 
-        result = true;
+        return true;
     }
     else
     {
-        result = false;
+        return false;
     }
-    
-    // Compute new priority
-    _lock_data.lock();
-    double distance = v3Norm(v3Sub(camera_location, getCenter()));
-    distance = distance < 0.1 ? 0.1 : distance;
-    _ideal_tessellation = (int)ceil(120.0 - distance / 3.0);
-    _ideal_priority = _ideal_tessellation - _texture_current_size;
-    _lock_data.unlock();
-    
-    return result;
 }
 
 Vector3 WandererChunk::getCenter()

gui_qt/wandererchunk.h

@@ -12,7 +12,8 @@ public:
     WandererChunk(Renderer* renderer, double x, double z, double size);
     ~WandererChunk();
     
-    bool maintain(Vector3 camera_location);
+    bool maintain();
+    void updatePriority(Vector3 camera_location);
     void render(QGLWidget* widget);
     
     Vector3 getCenter();

gui_qt/widgetwanderer.cpp

@@ -45,6 +45,26 @@ private:
 
 static QVector<ChunkMaintenanceThread*> _threads;
 
+static double _getTerrainHeight(Renderer* renderer, double x, double z)
+{
+    return terrainGetHeight((TerrainDefinition*)(renderer->customData[0]), x, z);
+}
+
+static Color _applyTextures(Renderer* renderer, Vector3 location, double precision)
+{
+    return texturesGetColor((TexturesDefinition*)(renderer->customData[1]), renderer, location.x, location.z, precision);
+}
+
+static Color _applyLightingToSurface(Renderer* renderer, Vector3 location, Vector3 normal, SurfaceMaterial material)
+{
+    return lightingApplyToSurface((LightingDefinition*)renderer->customData[2], renderer, location, normal, material);
+}
+
+static Color _maskLight(Renderer* renderer, Color light_color, Vector3 at_location, Vector3 light_location, Vector3 direction_to_light)
+{
+    return terrainLightFilter((TerrainDefinition*)(renderer->customData[0]), renderer, light_color, at_location, light_location, direction_to_light);
+}
+
 WidgetWanderer::WidgetWanderer(QWidget *parent, CameraDefinition* camera):
     QGLWidget(parent)
 {
@@ -58,8 +78,24 @@ WidgetWanderer::WidgetWanderer(QWidget *parent, CameraDefinition* camera):
     sceneryGetWater(&_water);
     _sky = skyCreateDefinition();
     sceneryGetSky(&_sky);
+    _terrain = terrainCreateDefinition();
+    sceneryGetTerrain(&_terrain);
+    _textures = texturesCreateDefinition();
+    sceneryGetTextures(&_textures);
+    _lighting = lightingCreateDefinition();
+    sceneryGetLighting(&_lighting);
+    
+    _renderer = rendererCreate();
+    _renderer.render_quality = 3;
+    _renderer.customData[0] = &_terrain;
+    _renderer.customData[1] = &_textures;
+    _renderer.customData[2] = &_lighting;
+    _renderer.customData[3] = &_water;
+    _renderer.applyTextures = _applyTextures;
+    _renderer.getTerrainHeight = _getTerrainHeight;
+    _renderer.applyLightingToSurface = _applyLightingToSurface;
+    _renderer.maskLight = _maskLight;
     
-    _renderer = sceneryCreateStandardRenderer();
     _updated = false;
 
     int chunks = 16;
@@ -102,7 +138,7 @@ void WidgetWanderer::startThreads()
     
     _alive = true;
     
-    nbcore = QThread::idealThreadCount() - 1;
+    nbcore = QThread::idealThreadCount();
     if (nbcore < 1)
     {
         nbcore = 1;
@@ -152,7 +188,7 @@ void WidgetWanderer::performChunksMaintenance()
         return;
     }
     
-    if (chunk->maintain(_current_camera.location))
+    if (chunk->maintain())
     {
         if (!_alive)
         {
@@ -164,7 +200,6 @@ void WidgetWanderer::performChunksMaintenance()
     
     _lock_chunks.lock();
     _updateQueue.append(chunk);
-    qSort(_updateQueue.begin(), _updateQueue.end(), _cmpChunks);
     _lock_chunks.unlock();
 }
 
@@ -316,6 +351,14 @@ void WidgetWanderer::timerEvent(QTimerEvent *event)
         _updated = false;
         updateGL();
     }
+    
+    for (int i = 0; i < _chunks.count(); i++)
+    {
+        _chunks[i]->updatePriority(_current_camera.location);
+    }
+    _lock_chunks.lock();
+    qSort(_updateQueue.begin(), _updateQueue.end(), _cmpChunks);
+    _lock_chunks.unlock();
 }
 
 void WidgetWanderer::initializeGL()

gui_qt/widgetwanderer.h

@@ -7,6 +7,9 @@
 #include "../lib_paysages/water.h"
 #include "../lib_paysages/renderer.h"
 #include "../lib_paysages/sky.h"
+#include "../lib_paysages/terrain.h"
+#include "../lib_paysages/textures.h"
+#include "../lib_paysages/lighting.h"
 
 class WidgetWanderer : public QGLWidget
 {
@@ -49,6 +52,9 @@ private:
 
     WaterDefinition _water;
     SkyDefinition _sky;
+    TerrainDefinition _terrain;
+    TexturesDefinition _textures;
+    LightingDefinition _lighting;
     
     double _average_frame_time;
     int _quality;