]> git.mxchange.org Git - flightgear.git/blobdiff - src/Main/renderer.cxx
Fix the jpg http server
[flightgear.git] / src / Main / renderer.cxx
index f1fa952d3c4f1e6bd8d4bead2eb237314cb99d80..cfbf94c1fb7d1e6ed5ede17d1d1a8ef3e490f8cf 100644 (file)
@@ -17,7 +17,7 @@
 //
 // You should have received a copy of the GNU General Public License
 // along with this program; if not, write to the Free Software
-// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 //
 // $Id$
 
 #  include <windows.h>
 #endif
 
-#include <plib/ssg.h>
-#include <plib/netSocket.h>
-
+#include <osg/ref_ptr>
+#include <osg/AlphaFunc>
+#include <osg/BlendFunc>
+#include <osg/Camera>
+#include <osg/CameraView>
+#include <osg/CullFace>
+#include <osg/Depth>
+#include <osg/Fog>
+#include <osg/Group>
+#include <osg/Light>
+#include <osg/LightModel>
+#include <osg/LightSource>
+#include <osg/NodeCallback>
+#include <osg/Notify>
+#include <osg/PolygonMode>
+#include <osg/PolygonOffset>
+#include <osg/ShadeModel>
+#include <osg/TexEnv>
+
+#include <osgUtil/SceneView>
+#include <osgUtil/UpdateVisitor>
+#include <osgUtil/IntersectVisitor>
+
+#include <osg/io_utils>
+#include <osgDB/WriteFile>
+#include <osgDB/ReadFile>
+#include <sstream>
+
+#include <simgear/math/SGMath.hxx>
 #include <simgear/screen/extensions.hxx>
 #include <simgear/scene/material/matlib.hxx>
+#include <simgear/scene/model/animation.hxx>
+#include <simgear/scene/model/model.hxx>
+#include <simgear/scene/model/modellib.hxx>
+#include <simgear/scene/model/placement.hxx>
+#include <simgear/scene/util/SGUpdateVisitor.hxx>
+#include <simgear/scene/tgdb/pt_lights.hxx>
 #include <simgear/props/props.hxx>
 #include <simgear/timing/sg_time.hxx>
-#include <simgear/scene/model/animation.hxx>
 #include <simgear/ephemeris/ephemeris.hxx>
-#include <simgear/scene/model/placement.hxx>
 #include <simgear/math/sg_random.h>
-#include <simgear/scene/model/modellib.hxx>
-#include <simgear/scene/model/model.hxx>
 #ifdef FG_JPEG_SERVER
 #include <simgear/screen/jpgfactory.hxx>
 #endif
 
-#ifdef FG_USE_CLOUDS_3D
-#  include <simgear/scene/sky/clouds3d/SkySceneLoader.hpp>
-#  include <simgear/scene/sky/clouds3d/SkyUtil.hpp>
-#endif
+#include <simgear/environment/visual_enviro.hxx>
 
 #include <Scenery/tileentry.hxx>
 #include <Time/light.hxx>
 #include <Scenery/scenery.hxx>
 #include <Scenery/tilemgr.hxx>
 #include <ATC/ATCdisplay.hxx>
-#include <Replay/replay.hxx>
 #include <GUI/new_gui.hxx>
+#include <Instrumentation/instrument_mgr.hxx>
+#include <Instrumentation/HUD/HUD.hxx>
 
 #include "splash.hxx"
 #include "renderer.hxx"
 #include "main.hxx"
 
+class SGPuDrawable : public osg::Drawable {
+public:
+  SGPuDrawable()
+  {
+    // Dynamic stuff, do not store geometry
+    setUseDisplayList(false);
+
+    osg::StateSet* stateSet = getOrCreateStateSet();
+    stateSet->setRenderBinDetails(1001, "RenderBin");
+    // speed optimization?
+    stateSet->setMode(GL_CULL_FACE, osg::StateAttribute::OFF);
+    // We can do translucent menus, so why not. :-)
+    stateSet->setAttribute(new osg::BlendFunc(osg::BlendFunc::SRC_ALPHA, osg::BlendFunc::ONE_MINUS_SRC_ALPHA));
+    stateSet->setMode(GL_BLEND, osg::StateAttribute::ON);
+    stateSet->setTextureMode(0, GL_TEXTURE_2D, osg::StateAttribute::OFF);
+
+    stateSet->setTextureAttribute(0, new osg::TexEnv(osg::TexEnv::MODULATE));
+
+    stateSet->setMode(GL_FOG, osg::StateAttribute::OFF);
+    stateSet->setMode(GL_DEPTH_TEST, osg::StateAttribute::OFF);
+  }
+  virtual void drawImplementation(osg::State& state) const
+  {
+    state.pushStateSet(getStateSet());
+    state.apply();
+    state.setActiveTextureUnit(0);
+    state.setClientActiveTextureUnit(0);
+    state.disableAllVertexArrays();
+
+    if((fgGetBool("/sim/atc/enabled"))
+       || (fgGetBool("/sim/ai-traffic/enabled")))
+      globals->get_ATC_display()->update(delta_time_sec, state);
+
+    puDisplay();
+
+    // Fade out the splash screen over the first three seconds.
+    double t = globals->get_sim_time_sec();
+    if (t <= 2.5) {
+      glPushAttrib(GL_ALL_ATTRIB_BITS);
+      glPushClientAttrib(~0u);
+
+      fgSplashUpdate((2.5 - t) / 2.5);
+
+      glPopClientAttrib();
+      glPopAttrib();
+    }
+
+    state.popStateSet();
+    state.dirtyAllModes();
+    state.dirtyAllAttributes();
+    state.dirtyAllVertexArrays();
+  }
+
+  virtual osg::Object* cloneType() const { return new SGPuDrawable; }
+  virtual osg::Object* clone(const osg::CopyOp&) const { return new SGPuDrawable; }
+  
+private:
+};
+
+class SGHUDAndPanelDrawable : public osg::Drawable {
+public:
+  SGHUDAndPanelDrawable()
+  {
+    // Dynamic stuff, do not store geometry
+    setUseDisplayList(false);
+
+    osg::StateSet* stateSet = getOrCreateStateSet();
+    stateSet->setRenderBinDetails(1000, "RenderBin");
+
+    // speed optimization?
+    stateSet->setMode(GL_CULL_FACE, osg::StateAttribute::OFF);
+    stateSet->setAttribute(new osg::BlendFunc(osg::BlendFunc::SRC_ALPHA, osg::BlendFunc::ONE_MINUS_SRC_ALPHA));
+    stateSet->setMode(GL_BLEND, osg::StateAttribute::ON);
+    stateSet->setMode(GL_FOG, osg::StateAttribute::OFF);
+    stateSet->setMode(GL_DEPTH_TEST, osg::StateAttribute::OFF);
+
+    stateSet->setTextureAttribute(0, new osg::TexEnv(osg::TexEnv::MODULATE));
+  }
+  virtual void drawImplementation(osg::State& state) const
+  {
+    state.pushStateSet(getStateSet());
+    state.apply();
+    state.setActiveTextureUnit(0);
+    state.setClientActiveTextureUnit(0);
+    state.disableAllVertexArrays();
+
+    glPushAttrib(GL_ALL_ATTRIB_BITS);
+    glPushClientAttrib(~0u);
+
+    fgCockpitUpdate(&state);
+
+    FGInstrumentMgr *instr = static_cast<FGInstrumentMgr*>(globals->get_subsystem("instrumentation"));
+    HUD *hud = static_cast<HUD*>(instr->get_subsystem("hud"));
+    hud->draw(state);
+
+    // update the panel subsystem
+    if ( globals->get_current_panel() != NULL )
+        globals->get_current_panel()->update(state);
+    // We don't need a state here - can be safely removed when we can pick
+    // correctly
+    fgUpdate3DPanels();
+
+    glPopClientAttrib();
+    glPopAttrib();
+
+    state.popStateSet();
+    state.dirtyAllModes();
+    state.dirtyAllAttributes();
+    state.dirtyAllVertexArrays();
+  }
+
+  virtual osg::Object* cloneType() const { return new SGHUDAndPanelDrawable; }
+  virtual osg::Object* clone(const osg::CopyOp&) const { return new SGHUDAndPanelDrawable; }
+  
+private:
+};
 
-float default_attenuation[3] = {1.0, 0.0, 0.0};
+class FGLightSourceUpdateCallback : public osg::NodeCallback {
+public:
+  virtual void operator()(osg::Node* node, osg::NodeVisitor* nv)
+  {
+    assert(dynamic_cast<osg::LightSource*>(node));
+    osg::LightSource* lightSource = static_cast<osg::LightSource*>(node);
+    osg::Light* light = lightSource->getLight();
+    
+    FGLight *l = static_cast<FGLight*>(globals->get_subsystem("lighting"));
+    light->setAmbient(l->scene_ambient().osg());
+    light->setDiffuse(l->scene_diffuse().osg());
+    light->setSpecular(l->scene_specular().osg());
+    SGVec4f position(l->sun_vec()[0], l->sun_vec()[1], l->sun_vec()[2], 0);
+    light->setPosition(position.osg());
+    SGVec3f direction(l->sun_vec()[0], l->sun_vec()[1], l->sun_vec()[2]);
+    light->setDirection(direction.osg());
+    light->setSpotExponent(0);
+    light->setSpotCutoff(180);
+    light->setConstantAttenuation(1);
+    light->setLinearAttenuation(0);
+    light->setQuadraticAttenuation(0);
+
+    traverse(node, nv);
+  }
+};
 
-ssgSelector *lightpoints_brightness = new ssgSelector;
-ssgTransform *lightpoints_transform = new ssgTransform;
-FGTileEntry *dummy_tile;
-sgVec3 rway_ols;
+class FGWireFrameModeUpdateCallback : public osg::StateAttribute::Callback {
+public:
+  FGWireFrameModeUpdateCallback() :
+    mWireframe(fgGetNode("/sim/rendering/wireframe"))
+  { }
+  virtual void operator()(osg::StateAttribute* stateAttribute,
+                          osg::NodeVisitor*)
+  {
+    assert(dynamic_cast<osg::PolygonMode*>(stateAttribute));
+    osg::PolygonMode* polygonMode;
+    polygonMode = static_cast<osg::PolygonMode*>(stateAttribute);
+
+    if (mWireframe->getBoolValue())
+      polygonMode->setMode(osg::PolygonMode::FRONT_AND_BACK,
+                           osg::PolygonMode::LINE);
+    else
+      polygonMode->setMode(osg::PolygonMode::FRONT_AND_BACK,
+                           osg::PolygonMode::FILL);
+  }
+private:
+  SGSharedPtr<SGPropertyNode> mWireframe;
+};
 
-// Clip plane settings...
-float scene_nearplane = 0.5f;
-float scene_farplane = 120000.0f;
+class FGLightModelUpdateCallback : public osg::StateAttribute::Callback {
+public:
+  FGLightModelUpdateCallback() :
+    mHighlights(fgGetNode("/sim/rendering/specular-highlight"))
+  { }
+  virtual void operator()(osg::StateAttribute* stateAttribute,
+                          osg::NodeVisitor*)
+  {
+    assert(dynamic_cast<osg::LightModel*>(stateAttribute));
+    osg::LightModel* lightModel;
+    lightModel = static_cast<osg::LightModel*>(stateAttribute);
+
+#if 0
+    FGLight *l = static_cast<FGLight*>(globals->get_subsystem("lighting"));
+    lightModel->setAmbientIntensity(l->scene_ambient().osg());
+#else
+    lightModel->setAmbientIntensity(osg::Vec4(0, 0, 0, 1));
+#endif
+    lightModel->setTwoSided(true);
+    lightModel->setLocalViewer(false);
 
-glPointParameterfProc glPointParameterfPtr = 0;
-glPointParameterfvProc glPointParameterfvPtr = 0;
-bool glPointParameterIsSupported = false;
+    if (mHighlights->getBoolValue()) {
+      lightModel->setColorControl(osg::LightModel::SEPARATE_SPECULAR_COLOR);
+    } else {
+      lightModel->setColorControl(osg::LightModel::SINGLE_COLOR);
+    }
+  }
+private:
+  SGSharedPtr<SGPropertyNode> mHighlights;
+};
 
+class FGFogEnableUpdateCallback : public osg::StateSet::Callback {
+public:
+  FGFogEnableUpdateCallback() :
+    mFogEnabled(fgGetNode("/sim/rendering/fog"))
+  { }
+  virtual void operator()(osg::StateSet* stateSet, osg::NodeVisitor*)
+  {
+    if (strcmp(mFogEnabled->getStringValue(), "disabled") == 0) {
+      stateSet->setMode(GL_FOG, osg::StateAttribute::OFF);
+    } else {
+      stateSet->setMode(GL_FOG, osg::StateAttribute::ON);
+    }
+  }
+private:
+  SGSharedPtr<SGPropertyNode> mFogEnabled;
+};
 
 // fog constants.  I'm a little nervous about putting actual code out
 // here but it seems to work (?)
@@ -104,24 +327,19 @@ static GLfloat ground_exp2_punch_through;
 // Sky structures
 SGSky *thesky;
 
-#ifdef FG_USE_CLOUDS_3D
-  SkySceneLoader *sgClouds3d;
-  bool _bcloud_orig = true;
-#endif
+osg::ref_ptr<osgUtil::SceneView> sceneView = new osgUtil::SceneView;  // This SceneView is used by class FGJpegHttpd ( jpg-httpd.cxx )
+static osg::ref_ptr<osg::FrameStamp> mFrameStamp = new osg::FrameStamp;
+static osg::ref_ptr<SGUpdateVisitor> mUpdateVisitor= new SGUpdateVisitor;
 
-// hack
-sgMat4 copy_of_ssgOpenGLAxisSwapMatrix =
-{
-  {  1.0f,  0.0f,  0.0f,  0.0f },
-  {  0.0f,  0.0f, -1.0f,  0.0f },
-  {  0.0f,  1.0f,  0.0f,  0.0f },
-  {  0.0f,  0.0f,  0.0f,  1.0f }
-};
+static osg::ref_ptr<osg::Group> mRoot = new osg::Group;
+
+static osg::ref_ptr<osg::CameraView> mCameraView = new osg::CameraView;
+static osg::ref_ptr<osg::Camera> mBackGroundCamera = new osg::Camera;
 
-ssgSimpleState *cloud3d_imposter_state;
-ssgSimpleState *default_state;
-ssgSimpleState *hud_and_panel;
-ssgSimpleState *menus;
+static osg::ref_ptr<osg::Fog> mFog = new osg::Fog;
+static osg::ref_ptr<osg::Fog> mRunwayLightingFog = new osg::Fog;
+static osg::ref_ptr<osg::Fog> mTaxiLightingFog = new osg::Fog;
+static osg::ref_ptr<osg::Fog> mGroundLightingFog = new osg::Fog;
 
 FGRenderer::FGRenderer()
 {
@@ -137,128 +355,218 @@ FGRenderer::~FGRenderer()
 #endif
 }
 
-
-void
-FGRenderer::build_states( void ) {
-    default_state = new ssgSimpleState;
-    default_state->ref();
-    default_state->disable( GL_TEXTURE_2D );
-    default_state->enable( GL_CULL_FACE );
-    default_state->enable( GL_COLOR_MATERIAL );
-    default_state->setColourMaterial( GL_AMBIENT_AND_DIFFUSE );
-    default_state->setMaterial( GL_EMISSION, 0, 0, 0, 1 );
-    default_state->setMaterial( GL_SPECULAR, 0, 0, 0, 1 );
-    default_state->disable( GL_BLEND );
-    default_state->disable( GL_ALPHA_TEST );
-    default_state->disable( GL_LIGHTING );
-
-    cloud3d_imposter_state = new ssgSimpleState;
-    cloud3d_imposter_state->ref();
-    cloud3d_imposter_state->enable( GL_TEXTURE_2D );
-    cloud3d_imposter_state->enable( GL_CULL_FACE );
-    cloud3d_imposter_state->enable( GL_COLOR_MATERIAL );
-    cloud3d_imposter_state->setColourMaterial( GL_AMBIENT_AND_DIFFUSE );
-    cloud3d_imposter_state->setMaterial( GL_DIFFUSE, 1, 1, 1, 1 );
-    cloud3d_imposter_state->setMaterial( GL_AMBIENT, 1, 1, 1, 1 );
-    cloud3d_imposter_state->setMaterial( GL_EMISSION, 0, 0, 0, 1 );
-    cloud3d_imposter_state->setMaterial( GL_SPECULAR, 0, 0, 0, 1 );
-    cloud3d_imposter_state->enable( GL_BLEND );
-    cloud3d_imposter_state->enable( GL_ALPHA_TEST );
-    cloud3d_imposter_state->disable( GL_LIGHTING );
-
-    hud_and_panel = new ssgSimpleState;
-    hud_and_panel->ref();
-    hud_and_panel->disable( GL_CULL_FACE );
-    hud_and_panel->disable( GL_TEXTURE_2D );
-    hud_and_panel->disable( GL_LIGHTING );
-    hud_and_panel->enable( GL_BLEND );
-
-    menus = new ssgSimpleState;
-    menus->ref();
-    menus->disable( GL_CULL_FACE );
-    menus->disable( GL_TEXTURE_2D );
-    menus->enable( GL_BLEND );
-}
-
-
 // Initialize various GL/view parameters
 void
 FGRenderer::init( void ) {
 
-    FGLight *l = (FGLight *)(globals->get_subsystem("lighting"));
+    osg::initNotifyLevel();
+
+    // The number of polygon-offset "units" to place between layers.  In
+    // principle, one is supposed to be enough.  In practice, I find that
+    // my hardware/driver requires many more.
+    osg::PolygonOffset::setUnitsMultiplier(1);
+    osg::PolygonOffset::setFactorMultiplier(1);
 
     // Go full screen if requested ...
-    if ( fgGetBool("/sim/startup/fullscreen") ) {
+    if ( fgGetBool("/sim/startup/fullscreen") )
         fgOSFullScreen();
-    }
-
-    // If enabled, normal vectors specified with glNormal are scaled
-    // to unit length after transformation.  Enabling this has
-    // performance implications.  See the docs for glNormal.
-    // glEnable( GL_NORMALIZE );
-
-    glEnable( GL_LIGHTING );
-    glEnable( GL_LIGHT0 );
-    // glLightfv( GL_LIGHT0, GL_POSITION, l->sun_vec );  // done later with ssg
 
-    sgVec3 sunpos;
-    sgSetVec3( sunpos, l->sun_vec()[0], l->sun_vec()[1], l->sun_vec()[2] );
-    ssgGetLight( 0 ) -> setPosition( sunpos );
-
-    glFogi (GL_FOG_MODE, GL_EXP2);
     if ( (!strcmp(fgGetString("/sim/rendering/fog"), "disabled")) || 
          (!fgGetBool("/sim/rendering/shading"))) {
         // if fastest fog requested, or if flat shading force fastest
         glHint ( GL_FOG_HINT, GL_FASTEST );
     } else if ( !strcmp(fgGetString("/sim/rendering/fog"), "nicest") ) {
-        glHint ( GL_FOG_HINT, GL_NICEST );
-    }
-    if ( fgGetBool("/sim/rendering/wireframe") ) {
-        // draw wire frame
-        glPolygonMode( GL_FRONT_AND_BACK, GL_LINE );
+        glHint ( GL_FOG_HINT, GL_DONT_CARE );
     }
 
-    // This is the default anyways, but it can't hurt
-    glFrontFace ( GL_CCW );
+    glHint(GL_POLYGON_SMOOTH_HINT, GL_DONT_CARE);
+    glHint(GL_LINE_SMOOTH_HINT, GL_DONT_CARE);
+    glHint(GL_POINT_SMOOTH_HINT, GL_DONT_CARE);
 
-    // Just testing ...
-    // glEnable(GL_POINT_SMOOTH);
-    // glEnable(GL_LINE_SMOOTH);
-    // glEnable(GL_POLYGON_SMOOTH);      
-}
+    sceneView->setDefaults(osgUtil::SceneView::COMPILE_GLOBJECTS_AT_INIT);
 
+    mFog->setMode(osg::Fog::EXP2);
+    mRunwayLightingFog->setMode(osg::Fog::EXP2);
+    mTaxiLightingFog->setMode(osg::Fog::EXP2);
+    mGroundLightingFog->setMode(osg::Fog::EXP2);
+
+    sceneView->setFrameStamp(mFrameStamp.get());
+
+    mUpdateVisitor = new SGUpdateVisitor;
+    sceneView->setUpdateVisitor(mUpdateVisitor.get());
+
+    sceneView->setComputeNearFarMode(osg::CullSettings::DO_NOT_COMPUTE_NEAR_FAR);
+    sceneView->getCamera()->setComputeNearFarMode(osg::CullSettings::DO_NOT_COMPUTE_NEAR_FAR);
+
+
+    osg::StateSet* stateSet = mRoot->getOrCreateStateSet();
+
+    stateSet->setMode(GL_LIGHTING, osg::StateAttribute::OFF);
+    
+    stateSet->setAttribute(new osg::Depth(osg::Depth::LESS));
+    stateSet->setMode(GL_DEPTH_TEST, osg::StateAttribute::OFF);
+
+    stateSet->setAttribute(new osg::AlphaFunc(osg::AlphaFunc::GREATER, 0.01));
+    stateSet->setMode(GL_ALPHA_TEST, osg::StateAttribute::OFF);
+    stateSet->setAttribute(new osg::BlendFunc);
+    stateSet->setMode(GL_BLEND, osg::StateAttribute::OFF);
+
+    stateSet->setMode(GL_FOG, osg::StateAttribute::OFF);
+    
+    // this will be set below
+    stateSet->setMode(GL_NORMALIZE, osg::StateAttribute::OFF);
+
+    osg::Material* material = new osg::Material;
+    stateSet->setAttribute(material);
+    
+    stateSet->setTextureAttribute(0, new osg::TexEnv);
+    stateSet->setTextureMode(0, GL_TEXTURE_2D, osg::StateAttribute::OFF);
+
+
+//     stateSet->setAttribute(new osg::CullFace(osg::CullFace::BACK));
+//     stateSet->setMode(GL_CULL_FACE, osg::StateAttribute::ON);
+
+    // this is the topmost scenegraph node for osg
+    mBackGroundCamera->addChild(thesky->getPreRoot());
+    mBackGroundCamera->setClearMask(0);
+
+    GLbitfield inheritanceMask = osg::CullSettings::ALL_VARIABLES;
+    inheritanceMask &= ~osg::CullSettings::COMPUTE_NEAR_FAR_MODE;
+    inheritanceMask &= ~osg::CullSettings::NEAR_FAR_RATIO;
+    inheritanceMask &= ~osg::CullSettings::CULLING_MODE;
+    mBackGroundCamera->setInheritanceMask(inheritanceMask);
+    mBackGroundCamera->setComputeNearFarMode(osg::CullSettings::DO_NOT_COMPUTE_NEAR_FAR);
+    mBackGroundCamera->setCullingMode(osg::CullSettings::NO_CULLING);
+    mBackGroundCamera->setRenderOrder(osg::Camera::NESTED_RENDER);
+
+    stateSet = mBackGroundCamera->getOrCreateStateSet();
+    stateSet->setMode(GL_DEPTH_TEST, osg::StateAttribute::OFF);
+
+    osg::Group* sceneGroup = new osg::Group;
+    sceneGroup->addChild(globals->get_scenery()->get_scene_graph());
+    sceneGroup->addChild(thesky->getCloudRoot());
+
+    stateSet = sceneGroup->getOrCreateStateSet();
+    stateSet->setMode(GL_BLEND, osg::StateAttribute::ON);
+    stateSet->setMode(GL_DEPTH_TEST, osg::StateAttribute::ON);
+
+    // need to update the light on every frame
+    osg::LightSource* lightSource = new osg::LightSource;
+    lightSource->setUpdateCallback(new FGLightSourceUpdateCallback);
+    // relative because of CameraView being just a clever transform node
+    lightSource->setReferenceFrame(osg::LightSource::RELATIVE_RF);
+    lightSource->setLocalStateSetModes(osg::StateAttribute::ON);
+    mRoot->addChild(lightSource);
+
+    lightSource->addChild(mBackGroundCamera.get());
+    lightSource->addChild(sceneGroup);
+
+
+    stateSet = globals->get_scenery()->get_scene_graph()->getOrCreateStateSet();
+    stateSet->setMode(GL_BLEND, osg::StateAttribute::ON);
+    stateSet->setMode(GL_ALPHA_TEST, osg::StateAttribute::ON);
+    stateSet->setMode(GL_LIGHTING, osg::StateAttribute::ON);
+    stateSet->setMode(GL_DEPTH_TEST, osg::StateAttribute::ON);
+
+    // enable disable specular highlights.
+    // is the place where we might plug in an other fragment shader ...
+    osg::LightModel* lightModel = new osg::LightModel;
+    lightModel->setUpdateCallback(new FGLightModelUpdateCallback);
+    stateSet->setAttribute(lightModel);
+
+    // switch to enable wireframe
+    osg::PolygonMode* polygonMode = new osg::PolygonMode;
+    polygonMode->setUpdateCallback(new FGWireFrameModeUpdateCallback);
+    stateSet->setAttributeAndModes(polygonMode);
+
+    // scene fog handling
+    stateSet->setAttributeAndModes(mFog.get());
+    stateSet->setUpdateCallback(new FGFogEnableUpdateCallback);
+
+    // plug in the GUI
+    osg::Camera* guiCamera = new osg::Camera;
+    guiCamera->setRenderOrder(osg::Camera::POST_RENDER);
+    guiCamera->setClearMask(0);
+    inheritanceMask = osg::CullSettings::ALL_VARIABLES;
+    inheritanceMask &= ~osg::CullSettings::COMPUTE_NEAR_FAR_MODE;
+    inheritanceMask &= ~osg::CullSettings::CULLING_MODE;
+    guiCamera->setInheritanceMask(inheritanceMask);
+    guiCamera->setComputeNearFarMode(osg::CullSettings::DO_NOT_COMPUTE_NEAR_FAR);
+    guiCamera->setCullingMode(osg::CullSettings::NO_CULLING);
+    mRoot->addChild(guiCamera);
+    osg::Geode* geode = new osg::Geode;
+    geode->addDrawable(new SGPuDrawable);
+    geode->addDrawable(new SGHUDAndPanelDrawable);
+    guiCamera->addChild(geode);
+
+    // this one contains all lights, here we set the light states we did
+    // in the plib case with plain OpenGL
+    osg::Group* lightGroup = new osg::Group;
+    sceneGroup->addChild(lightGroup);
+    lightGroup->addChild(globals->get_scenery()->get_gnd_lights_root());
+    lightGroup->addChild(globals->get_scenery()->get_vasi_lights_root());
+    lightGroup->addChild(globals->get_scenery()->get_rwy_lights_root());
+    lightGroup->addChild(globals->get_scenery()->get_taxi_lights_root());
+
+    stateSet = globals->get_scenery()->get_gnd_lights_root()->getOrCreateStateSet();
+    stateSet->setAttributeAndModes(mFog.get());
+    stateSet->setUpdateCallback(new FGFogEnableUpdateCallback);
+    stateSet = globals->get_scenery()->get_vasi_lights_root()->getOrCreateStateSet();
+    stateSet->setAttributeAndModes(mRunwayLightingFog.get());
+    stateSet->setUpdateCallback(new FGFogEnableUpdateCallback);
+    stateSet = globals->get_scenery()->get_rwy_lights_root()->getOrCreateStateSet();
+    stateSet->setAttributeAndModes(mRunwayLightingFog.get());
+    stateSet->setUpdateCallback(new FGFogEnableUpdateCallback);
+    stateSet = globals->get_scenery()->get_taxi_lights_root()->getOrCreateStateSet();
+    stateSet->setAttributeAndModes(mTaxiLightingFog.get());
+    stateSet->setUpdateCallback(new FGFogEnableUpdateCallback);
+
+    mCameraView->addChild(mRoot.get());
+    sceneView->setSceneData(mCameraView.get());
+
+//  sceneView->getState()->setCheckForGLErrors(osg::State::ONCE_PER_ATTRIBUTE);
+}
 
 
 // Update all Visuals (redraws anything graphics related)
 void
 FGRenderer::update( bool refresh_camera_settings ) {
-    bool scenery_loaded = fgGetBool("sim/sceneryloaded") || fgGetBool("sim/sceneryloaded-override");
-    bool draw_otw = fgGetBool("/sim/rendering/draw-otw");
+    bool scenery_loaded = fgGetBool("sim/sceneryloaded")
+                          || fgGetBool("sim/sceneryloaded-override");
+
+    if ( idle_state < 1000 || !scenery_loaded ) {
+        if (sceneView.valid() && sceneView->getState()) {
+            sceneView->getState()->setActiveTextureUnit(0);
+            sceneView->getState()->setClientActiveTextureUnit(0);
+            sceneView->getState()->disableAllVertexArrays();
+        }
+        // still initializing, draw the splash screen
+        glPushAttrib(GL_ALL_ATTRIB_BITS);
+        glPushClientAttrib(~0u);
+
+        fgSplashUpdate(1.0);
+
+        glPopClientAttrib();
+        glPopAttrib();
+
+        // Keep resetting sim time while the sim is initializing
+        globals->set_sim_time_sec( 0.0 );
+        return;
+    }
+
     bool skyblend = fgGetBool("/sim/rendering/skyblend");
+    bool use_point_sprites = fgGetBool("/sim/rendering/point-sprites");
     bool enhanced_lighting = fgGetBool("/sim/rendering/enhanced-lighting");
-    bool distance_attenuation = fgGetBool("/sim/rendering/distance-attenuation");
-#ifdef FG_ENABLE_MULTIPASS_CLOUDS
-    bool multi_pass_clouds = fgGetBool("/sim/rendering/multi-pass-clouds") && 
-                                !SGCloudLayer::enable_bump_mapping;  // ugly artefact now
-#else
-    bool multi_pass_clouds = false;
-#endif
-    bool draw_clouds = fgGetBool("/environment/clouds/status");
-
-    GLfloat black[4] = { 0.0, 0.0, 0.0, 1.0 };
-    GLfloat white[4] = { 1.0, 1.0, 1.0, 1.0 };
+    bool distance_attenuation
+        = fgGetBool("/sim/rendering/distance-attenuation");
+    // OSGFIXME
+    SGConfigureDirectionalLights( use_point_sprites, enhanced_lighting,
+                                  distance_attenuation );
 
-    // static const SGPropertyNode *longitude
-    //     = fgGetNode("/position/longitude-deg");
-    // static const SGPropertyNode *latitude
-    //     = fgGetNode("/position/latitude-deg");
-    // static const SGPropertyNode *altitude
-    //     = fgGetNode("/position/altitude-ft");
     static const SGPropertyNode *groundlevel_nearplane
         = fgGetNode("/sim/current-view/ground-level-nearplane-m");
 
-    FGLight *l = (FGLight *)(globals->get_subsystem("lighting"));
-    static double last_visibility = -9999;
+    FGLight *l = static_cast<FGLight*>(globals->get_subsystem("lighting"));
 
     // update fog params
     double actual_visibility;
@@ -268,6 +576,7 @@ FGRenderer::update( bool refresh_camera_settings ) {
         actual_visibility = fgGetDouble("/environment/visibility-m");
     }
 
+    static double last_visibility = -9999;
     if ( actual_visibility != last_visibility ) {
         last_visibility = actual_visibility;
 
@@ -281,488 +590,229 @@ FGRenderer::update( bool refresh_camera_settings ) {
             rwy_exp2_punch_through = sqrt_m_log01 / ( 8000 * 2.5 );
             taxi_exp2_punch_through = sqrt_m_log01 / ( 8000 * 1.5 );
         }
+        mFog->setDensity(fog_exp2_density);
+        mRunwayLightingFog->setDensity(rwy_exp2_punch_through);
+        mTaxiLightingFog->setDensity(taxi_exp2_punch_through);
+        mGroundLightingFog->setDensity(ground_exp2_punch_through);
     }
 
-    // double angle;
-    // GLfloat black[4] = { 0.0, 0.0, 0.0, 1.0 };
-    // GLfloat white[4] = { 1.0, 1.0, 1.0, 1.0 };
-    // GLfloat terrain_color[4] = { 0.54, 0.44, 0.29, 1.0 };
-    // GLfloat mat_shininess[] = { 10.0 };
-    GLbitfield clear_mask;
+    // idle_state is now 1000 meaning we've finished all our
+    // initializations and are running the main loop, so this will
+    // now work without seg faulting the system.
+
+    FGViewer *current__view = globals->get_current_view();
+    // Force update of center dependent values ...
+    current__view->set_dirty();
+
+    if ( refresh_camera_settings ) {
+        // update view port
+        resize( fgGetInt("/sim/startup/xsize"),
+                fgGetInt("/sim/startup/ysize") );
+
+        SGVec3d center = globals->get_scenery()->get_center();
+        SGVec3d position = current__view->getViewPosition();
+        SGQuatd attitude = current__view->getViewOrientation();
+        SGVec3d osgPosition = attitude.transform(center - position);
+        mCameraView->setPosition(osgPosition.osg());
+        mCameraView->setAttitude(inverse(attitude).osg());
+    }
 
-    if ( idle_state != 1000 || !scenery_loaded ) {
-        // still initializing, draw the splash screen
-        if ( fgGetBool("/sim/startup/splash-screen") ) {
-            fgSplashUpdate(0.0, 1.0);
+    if ( skyblend ) {
+        if ( fgGetBool("/sim/rendering/textures") ) {
+            SGVec4f clearColor(l->adj_fog_color());
+            sceneView->getCamera()->setClearColor(clearColor.osg());
         }
-        // Keep resetting sim time while the sim is initializing
-        globals->set_sim_time_sec( 0.0 );
-        SGAnimation::set_sim_time_sec( 0.0 );
     } else {
-        // idle_state is now 1000 meaning we've finished all our
-        // initializations and are running the main loop, so this will
-        // now work without seg faulting the system.
-
-        FGViewer *current__view = globals->get_current_view();
-
-        // calculate our current position in cartesian space
-        globals->get_scenery()->set_center( globals->get_scenery()->get_next_center() );
-
-        if ( refresh_camera_settings ) {
-            // update view port
-            resize( fgGetInt("/sim/startup/xsize"),
-                    fgGetInt("/sim/startup/ysize") );
-
-            // Tell GL we are switching to model view parameters
-            glMatrixMode(GL_MODELVIEW);
-            glLoadIdentity();
-            ssgSetCamera( (sgVec4 *)current__view->get_VIEW() );
-        }
-
-        if ( fgGetBool("/sim/rendering/clouds3d") ) {
-            glClear( GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT );
-            cloud3d_imposter_state->force();
-            glDisable( GL_FOG );
-            glColor4f( 1.0, 1.0, 1.0, 1.0 );
-            glEnable(GL_DEPTH_TEST);
-            glEnable(GL_BLEND);
-            glBlendFunc( GL_ONE, GL_ONE_MINUS_SRC_ALPHA ) ;
-
-#ifdef FG_USE_CLOUDS_3D
-            if ( _bcloud_orig ) {
-                Point3D c = globals->get_scenery()->get_center();
-                sgClouds3d->Set_Cloud_Orig( &c );
-                _bcloud_orig = false;
-            }
-            sgClouds3d->Update( current__view->get_absolute_view_pos() );
-#endif
-            glBlendFunc( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA ) ;
-            glDisable(GL_DEPTH_TEST);
-        }
-
-        clear_mask = GL_DEPTH_BUFFER_BIT;
-        if ( fgGetBool("/sim/rendering/wireframe") ) {
-            clear_mask |= GL_COLOR_BUFFER_BIT;
-        }
-
-        if ( skyblend ) {
-            if ( fgGetBool("/sim/rendering/textures") ) {
-            // glClearColor(black[0], black[1], black[2], black[3]);
-            glClearColor(l->adj_fog_color()[0], l->adj_fog_color()[1],
-                         l->adj_fog_color()[2], l->adj_fog_color()[3]);
-            clear_mask |= GL_COLOR_BUFFER_BIT;
-            }
-        } else {
-            glClearColor(l->sky_color()[0], l->sky_color()[1],
-                         l->sky_color()[2], l->sky_color()[3]);
-            clear_mask |= GL_COLOR_BUFFER_BIT;
-        }
-        if ( multi_pass_clouds && draw_clouds ) {
-            glClearStencil( 0 );
-            clear_mask |= GL_STENCIL_BUFFER_BIT;
-        }
-        glClear( clear_mask );
-
-        // set the opengl state to known default values
-        default_state->force();
-
-        // update fog params if visibility has changed
-        double visibility_meters = fgGetDouble("/environment/visibility-m");
-        thesky->set_visibility(visibility_meters);
-
-        thesky->modify_vis( cur_fdm_state->get_Altitude() * SG_FEET_TO_METER,
-                            ( global_multi_loop * fgGetInt("/sim/speed-up") )
-                            / (double)fgGetInt("/sim/model-hz") );
-
-        // Set correct opengl fog density
-        glFogf (GL_FOG_DENSITY, fog_exp2_density);
-
-        // update the sky dome
-        if ( skyblend ) {
-            /*
-             SG_LOG( SG_GENERAL, SG_BULK, "thesky->repaint() sky_color = "
-             << l->sky_color()[0] << " "
-             << l->sky_color()[1] << " "
-             << l->sky_color()[2] << " "
-             << l->sky_color()[3] );
-            SG_LOG( SG_GENERAL, SG_BULK, "    fog = "
-             << l->fog_color()[0] << " "
-             << l->fog_color()[1] << " "
-             << l->fog_color()[2] << " "
-             << l->fog_color()[3] ); 
-            SG_LOG( SG_GENERAL, SG_BULK,
-                    "    sun_angle = " << l->sun_angle
-             << "    moon_angle = " << l->moon_angle );
-            */
-
-            static SGSkyColor scolor;
-            FGLight *l = (FGLight *)(globals->get_subsystem("lighting"));
-
-            scolor.sky_color   = l->sky_color();
-            scolor.fog_color   = l->adj_fog_color();
-            scolor.cloud_color = l->cloud_color();
-            scolor.sun_angle   = l->get_sun_angle();
-            scolor.moon_angle  = l->get_moon_angle();
-            scolor.nplanets    = globals->get_ephem()->getNumPlanets();
-            scolor.nstars      = globals->get_ephem()->getNumStars();
-            scolor.planet_data = globals->get_ephem()->getPlanets();
-            scolor.star_data   = globals->get_ephem()->getStars();
-
-            thesky->repaint( scolor );
-
-            /*
-            SG_LOG( SG_GENERAL, SG_BULK,
-                    "thesky->reposition( view_pos = " << view_pos[0] << " "
-             << view_pos[1] << " " << view_pos[2] );
-            SG_LOG( SG_GENERAL, SG_BULK,
-                    "    zero_elev = " << zero_elev[0] << " "
-             << zero_elev[1] << " " << zero_elev[2]
-             << " lon = " << cur_fdm_state->get_Longitude()
-             << " lat = " << cur_fdm_state->get_Latitude() );
-            SG_LOG( SG_GENERAL, SG_BULK,
-                    "    sun_rot = " << l->get_sun_rotation
-             << " gst = " << SGTime::cur_time_params->getGst() );
-            SG_LOG( SG_GENERAL, SG_BULK,
-                 "    sun ra = " << globals->get_ephem()->getSunRightAscension()
-              << " sun dec = " << globals->get_ephem()->getSunDeclination()
-              << " moon ra = " << globals->get_ephem()->getMoonRightAscension()
-              << " moon dec = " << globals->get_ephem()->getMoonDeclination() );
-            */
-
-            // The sun and moon distances are scaled down versions
-            // of the actual distance to get both the moon and the sun
-            // within the range of the far clip plane.
-            // Moon distance:    384,467 kilometers
-            // Sun distance: 150,000,000 kilometers
-            double sun_horiz_eff, moon_horiz_eff;
-            if (fgGetBool("/sim/rendering/horizon-effect")) {
-            sun_horiz_eff = 0.67+pow(0.5+cos(l->get_sun_angle())*2/2, 0.33)/3;
-            moon_horiz_eff = 0.67+pow(0.5+cos(l->get_moon_angle())*2/2, 0.33)/3;
-            } else {
-               sun_horiz_eff = moon_horiz_eff = 1.0;
-            }
-
-            static SGSkyState sstate;
-
-            sstate.view_pos  = current__view->get_view_pos();
-            sstate.zero_elev = current__view->get_zero_elev();
-            sstate.view_up   = current__view->get_world_up();
-            sstate.lon       = current__view->getLongitude_deg()
-                                * SGD_DEGREES_TO_RADIANS;
-            sstate.lat       = current__view->getLatitude_deg()
-                                * SGD_DEGREES_TO_RADIANS;
-            sstate.alt       = current__view->getAltitudeASL_ft()
-                                * SG_FEET_TO_METER;
-            sstate.spin      = l->get_sun_rotation();
-            sstate.gst       = globals->get_time_params()->getGst();
-            sstate.sun_ra    = globals->get_ephem()->getSunRightAscension();
-            sstate.sun_dec   = globals->get_ephem()->getSunDeclination();
-            sstate.sun_dist  = 50000.0 * sun_horiz_eff;
-            sstate.moon_ra   = globals->get_ephem()->getMoonRightAscension();
-            sstate.moon_dec  = globals->get_ephem()->getMoonDeclination();
-            sstate.moon_dist = 40000.0 * moon_horiz_eff;
-
-            thesky->reposition( sstate, delta_time_sec );
-        }
-
-        glEnable( GL_DEPTH_TEST );
-        if ( strcmp(fgGetString("/sim/rendering/fog"), "disabled") ) {
-            glEnable( GL_FOG );
-            glFogi( GL_FOG_MODE, GL_EXP2 );
-            glFogfv( GL_FOG_COLOR, l->adj_fog_color() );
-        }
-
-        // set sun/lighting parameters
-        ssgGetLight( 0 ) -> setPosition( l->sun_vec() );
+        SGVec4f clearColor(l->sky_color());
+        sceneView->getCamera()->setClearColor(clearColor.osg());
+    }
 
-        // GL_LIGHT_MODEL_AMBIENT has a default non-zero value so if
-        // we only update GL_AMBIENT for our lights we will never get
-        // a completely dark scene.  So, we set GL_LIGHT_MODEL_AMBIENT
-        // explicitely to black.
-        glLightModelfv( GL_LIGHT_MODEL_AMBIENT, black );
+    // update fog params if visibility has changed
+    double visibility_meters = fgGetDouble("/environment/visibility-m");
+    thesky->set_visibility(visibility_meters);
 
-        ssgGetLight( 0 ) -> setColour( GL_AMBIENT, l->scene_ambient() );
-        ssgGetLight( 0 ) -> setColour( GL_DIFFUSE, l->scene_diffuse() );
-        ssgGetLight( 0 ) -> setColour( GL_SPECULAR, l->scene_specular() );
+    thesky->modify_vis( cur_fdm_state->get_Altitude() * SG_FEET_TO_METER,
+                        ( global_multi_loop * fgGetInt("/sim/speed-up") )
+                        / (double)fgGetInt("/sim/model-hz") );
 
-        // texture parameters
-        // glEnable( GL_TEXTURE_2D );
-        glTexEnvi( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE ) ;
-        glHint( GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST ) ;
+    // update the sky dome
+    if ( skyblend ) {
 
-        double agl =
-            current_aircraft.fdm_state->get_Altitude() * SG_FEET_TO_METER
-            - globals->get_scenery()->get_cur_elev();
+        // The sun and moon distances are scaled down versions
+        // of the actual distance to get both the moon and the sun
+        // within the range of the far clip plane.
+        // Moon distance:    384,467 kilometers
+        // Sun distance: 150,000,000 kilometers
 
-        if ( agl > 10.0 ) {
-            scene_nearplane = 10.0f;
-            scene_farplane = 120000.0f;
+        double sun_horiz_eff, moon_horiz_eff;
+        if (fgGetBool("/sim/rendering/horizon-effect")) {
+           sun_horiz_eff = 0.67+pow(0.5+cos(l->get_sun_angle())*2/2, 0.33)/3;
+           moon_horiz_eff = 0.67+pow(0.5+cos(l->get_moon_angle())*2/2, 0.33)/3;
         } else {
-            scene_nearplane = groundlevel_nearplane->getDoubleValue();
-            scene_farplane = 120000.0f;
-        }
-
-        setNearFar( scene_nearplane, scene_farplane );
-
-        if ( draw_otw && skyblend ) {
-            // draw the sky backdrop
-
-            // we need a white diffuse light for the phase of the moon
-            ssgGetLight( 0 ) -> setColour( GL_DIFFUSE, white );
-            thesky->preDraw( cur_fdm_state->get_Altitude() * SG_FEET_TO_METER,
-                             fog_exp2_density );
-            // return to the desired diffuse color
-            ssgGetLight( 0 ) -> setColour( GL_DIFFUSE, l->scene_diffuse() );
-        }
-
-        // draw the ssg scene
-        glEnable( GL_DEPTH_TEST );
-
-        if ( fgGetBool("/sim/rendering/wireframe") ) {
-            // draw wire frame
-            glPolygonMode( GL_FRONT_AND_BACK, GL_LINE );
-        }
-        if ( draw_otw ) {
-            if ( draw_clouds ) {
-
-                // Draw the terrain
-                FGTileMgr::set_tile_filter( true );
-                sgSetModelFilter( false );
-                globals->get_aircraft_model()->select( false );
-                ssgCullAndDraw( globals->get_scenery()->get_scene_graph() );
-
-                // Disable depth buffer update, draw the clouds
-                glDepthMask( GL_FALSE );
-                thesky->drawUpperClouds();
-                if ( multi_pass_clouds ) {
-                    thesky->drawLowerClouds();
-                }
-                glDepthMask( GL_TRUE );
-
-                if ( multi_pass_clouds ) {
-                    // Draw the objects except the aircraft
-                    //  and update the stencil buffer with 1
-                    glEnable( GL_STENCIL_TEST );
-                    glStencilFunc( GL_ALWAYS, 1, 1 );
-                    glStencilOp( GL_KEEP, GL_KEEP, GL_REPLACE );
-                }
-                FGTileMgr::set_tile_filter( false );
-                sgSetModelFilter( true );
-                ssgCullAndDraw( globals->get_scenery()->get_scene_graph() );
-            } else {
-                FGTileMgr::set_tile_filter( true );
-                sgSetModelFilter( true );
-                globals->get_aircraft_model()->select( false );
-                ssgCullAndDraw( globals->get_scenery()->get_scene_graph() );
-            }
-        }
-
-        // This is a bit kludgy.  Every 200 frames, do an extra
-        // traversal of the scene graph without drawing anything, but
-        // with the field-of-view set to 360x360 degrees.  This
-        // ensures that out-of-range random objects that are not in
-        // the current view frustum will still be freed properly.
-        static int counter = 0;
-        counter++;
-        if (counter >= 200) {
-            sgFrustum f;
-            f.setFOV(360, 360);
-                    // No need to put the near plane too close;
-                    // this way, at least the aircraft can be
-                    // culled.
-            f.setNearFar(1000, 1000000);
-            sgMat4 m;
-            ssgGetModelviewMatrix(m);
-            FGTileMgr::set_tile_filter( true );
-            sgSetModelFilter( true );
-            globals->get_scenery()->get_scene_graph()->cull(&f, m, true);
-            counter = 0;
-        }
-
-        // change state for lighting here
-
-        // draw runway lighting
-        glFogf (GL_FOG_DENSITY, rwy_exp2_punch_through);
-
-        // CLO - 02/25/2005 - DO WE NEED THIS extra fgSetNearFar()?
-        // fgSetNearFar( scene_nearplane, scene_farplane );
-
-        if ( enhanced_lighting ) {
-
-            // Enable states for drawing points with GL_extension
-            glEnable(GL_POINT_SMOOTH);
-
-            if ( distance_attenuation && glPointParameterIsSupported )
-            {
-                // Enable states for drawing points with GL_extension
-                glEnable(GL_POINT_SMOOTH);
-
-                float quadratic[3] = {1.0, 0.001, 0.0000001};
-                // makes the points fade as they move away
-                glPointParameterfvPtr(GL_DISTANCE_ATTENUATION_EXT, quadratic);
-                glPointParameterfPtr(GL_POINT_SIZE_MIN_EXT, 1.0); 
-            }
-
-            glPointSize(4.0);
-
-            // blending function for runway lights
-            glBlendFunc ( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA) ;
+           sun_horiz_eff = moon_horiz_eff = 1.0;
         }
 
-        glTexGeni(GL_S, GL_TEXTURE_GEN_MODE, GL_SPHERE_MAP);
-        glTexGeni(GL_T, GL_TEXTURE_GEN_MODE, GL_SPHERE_MAP);
-        glEnable(GL_TEXTURE_GEN_S);
-        glEnable(GL_TEXTURE_GEN_T);
-        glPolygonMode(GL_FRONT, GL_POINT);
+        static SGSkyState sstate;
+
+        sstate.view_pos  = current__view->get_view_pos();
+        sstate.zero_elev = current__view->get_zero_elev();
+        sstate.view_up   = current__view->get_world_up();
+        sstate.lon       = current__view->getLongitude_deg()
+                            * SGD_DEGREES_TO_RADIANS;
+        sstate.lat       = current__view->getLatitude_deg()
+                            * SGD_DEGREES_TO_RADIANS;
+        sstate.alt       = current__view->getAltitudeASL_ft()
+                            * SG_FEET_TO_METER;
+        sstate.spin      = l->get_sun_rotation();
+        sstate.gst       = globals->get_time_params()->getGst();
+        sstate.sun_ra    = globals->get_ephem()->getSunRightAscension();
+        sstate.sun_dec   = globals->get_ephem()->getSunDeclination();
+        sstate.sun_dist  = 50000.0 * sun_horiz_eff;
+        sstate.moon_ra   = globals->get_ephem()->getMoonRightAscension();
+        sstate.moon_dec  = globals->get_ephem()->getMoonDeclination();
+        sstate.moon_dist = 40000.0 * moon_horiz_eff;
+        sstate.sun_angle = l->get_sun_angle();
+
+
+        /*
+         SG_LOG( SG_GENERAL, SG_BULK, "thesky->repaint() sky_color = "
+         << l->sky_color()[0] << " "
+         << l->sky_color()[1] << " "
+         << l->sky_color()[2] << " "
+         << l->sky_color()[3] );
+        SG_LOG( SG_GENERAL, SG_BULK, "    fog = "
+         << l->fog_color()[0] << " "
+         << l->fog_color()[1] << " "
+         << l->fog_color()[2] << " "
+         << l->fog_color()[3] );
+        SG_LOG( SG_GENERAL, SG_BULK,
+                "    sun_angle = " << l->sun_angle
+         << "    moon_angle = " << l->moon_angle );
+        */
+
+        static SGSkyColor scolor;
+
+        scolor.sky_color   = SGVec3f(l->sky_color().data());
+        scolor.fog_color   = SGVec3f(l->adj_fog_color().data());
+        scolor.cloud_color = SGVec3f(l->cloud_color().data());
+        scolor.sun_angle   = l->get_sun_angle();
+        scolor.moon_angle  = l->get_moon_angle();
+        scolor.nplanets    = globals->get_ephem()->getNumPlanets();
+        scolor.nstars      = globals->get_ephem()->getNumStars();
+        scolor.planet_data = globals->get_ephem()->getPlanets();
+        scolor.star_data   = globals->get_ephem()->getStars();
+
+        thesky->reposition( sstate, delta_time_sec );
+        thesky->repaint( scolor );
+
+        /*
+        SG_LOG( SG_GENERAL, SG_BULK,
+                "thesky->reposition( view_pos = " << view_pos[0] << " "
+         << view_pos[1] << " " << view_pos[2] );
+        SG_LOG( SG_GENERAL, SG_BULK,
+                "    zero_elev = " << zero_elev[0] << " "
+         << zero_elev[1] << " " << zero_elev[2]
+         << " lon = " << cur_fdm_state->get_Longitude()
+         << " lat = " << cur_fdm_state->get_Latitude() );
+        SG_LOG( SG_GENERAL, SG_BULK,
+                "    sun_rot = " << l->get_sun_rotation
+         << " gst = " << SGTime::cur_time_params->getGst() );
+        SG_LOG( SG_GENERAL, SG_BULK,
+             "    sun ra = " << globals->get_ephem()->getSunRightAscension()
+          << " sun dec = " << globals->get_ephem()->getSunDeclination()
+          << " moon ra = " << globals->get_ephem()->getMoonRightAscension()
+          << " moon dec = " << globals->get_ephem()->getMoonDeclination() );
+        */
+
+        //OSGFIXME
+//         shadows->setupShadows(
+//           current__view->getLongitude_deg(),
+//           current__view->getLatitude_deg(),
+//           globals->get_time_params()->getGst(),
+//           globals->get_ephem()->getSunRightAscension(),
+//           globals->get_ephem()->getSunDeclination(),
+//           l->get_sun_angle());
 
-        // draw runway lighting
-        if ( draw_otw ) {
-            ssgCullAndDraw( globals->get_scenery()->get_vasi_lights_root() );
-            ssgCullAndDraw( globals->get_scenery()->get_rwy_lights_root() );
-        }
-
-        // change punch through and then draw taxi lighting
-        glFogf ( GL_FOG_DENSITY, fog_exp2_density );
-        // sgVec3 taxi_fog;
-        // sgSetVec3( taxi_fog, 0.0, 0.0, 0.0 );
-        // glFogfv ( GL_FOG_COLOR, taxi_fog );
-        if ( draw_otw ) {
-            ssgCullAndDraw( globals->get_scenery()->get_taxi_lights_root() );
-        }
-
-        // clean up lighting
-        glPolygonMode(GL_FRONT, GL_FILL);
-        glDisable(GL_TEXTURE_GEN_S);
-        glDisable(GL_TEXTURE_GEN_T);
-
-        //static int _frame_count = 0;
-        //if (_frame_count % 30 == 0) {
-        //  printf("SSG: %s\n", ssgShowStats());
-        //}
-        //else {
-        //  ssgShowStats();
-        //}
-        //_frame_count++;
-
-
-        if ( enhanced_lighting ) {
-            if ( distance_attenuation && glPointParameterIsSupported ) {
-                glPointParameterfvPtr(GL_DISTANCE_ATTENUATION_EXT,
-                                      default_attenuation);
-            }
-
-            glPointSize(1.0);
-            glDisable(GL_POINT_SMOOTH);
-        }
-
-        // draw ground lighting
-        glFogf (GL_FOG_DENSITY, ground_exp2_punch_through);
-        if ( draw_otw ) {
-            ssgCullAndDraw( globals->get_scenery()->get_gnd_lights_root() );
-        }
-
-        if ( draw_otw && fgGetBool("/sim/rendering/clouds3d") ) {
-            glDisable( GL_FOG );
-            glDisable( GL_LIGHTING );
-            // cout << "drawing new clouds" << endl;
-
-            glEnable(GL_DEPTH_TEST);
-            glEnable(GL_BLEND);
-            glBlendFunc( GL_ONE, GL_ONE_MINUS_SRC_ALPHA ) ;
-
-            /*
-            glEnable( GL_TEXTURE_2D );
-            glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
-            glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
-            glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
-            glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
-            */
-
-#ifdef FG_USE_CLOUDS_3D
-            sgClouds3d->Draw((sgVec4 *)current__view->get_VIEW());
-#endif
-            glEnable( GL_FOG );
-            glEnable( GL_LIGHTING );
-            glEnable( GL_DEPTH_TEST );
-            glBlendFunc ( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA ) ;
-        }
-
-        if ( draw_otw && draw_clouds ) {
-            if ( multi_pass_clouds ) {
-                // Disable depth buffer update, draw the clouds where the
-                //  objects overwrite the already drawn clouds, by testing
-                //  the stencil buffer against 1
-                glDepthMask( GL_FALSE );
-                glStencilFunc( GL_EQUAL, 1, 1 );
-                glStencilOp( GL_KEEP, GL_KEEP, GL_KEEP );
-                thesky->drawUpperClouds();
-                thesky->drawLowerClouds();
-                glDepthMask( GL_TRUE );
-                glDisable( GL_STENCIL_TEST );
-            } else {
-                glDepthMask( GL_FALSE );
-                thesky->drawLowerClouds();
-                glDepthMask( GL_TRUE );
-            }
-        }
+    }
 
-        if ( draw_otw ) {
-            FGTileMgr::set_tile_filter( false );
-            sgSetModelFilter( false );
-            globals->get_aircraft_model()->select( true );
-            globals->get_model_mgr()->draw();
-            globals->get_aircraft_model()->draw();
-            // If the view is internal, the previous line draw the 
-            //  cockpit with modified near/far clip planes and deselect
-            //  the aircraft in the global scenegraph
-            // Otherwise, it just enables the aircraft: The scenegraph
-            //  must be drawn again to see the plane.
-            ssgCullAndDraw( globals->get_scenery()->get_scene_graph() );
-            FGTileMgr::set_tile_filter( true );
-            sgSetModelFilter( true );
-            globals->get_aircraft_model()->select( true );
-        }
+    if ( strcmp(fgGetString("/sim/rendering/fog"), "disabled") ) {
+        SGVec4f color(l->adj_fog_color());
+        mFog->setColor(color.osg());
+        mRunwayLightingFog->setColor(color.osg());
+        mTaxiLightingFog->setColor(color.osg());
+        mGroundLightingFog->setColor(color.osg());
+    }
 
-        // display HUD && Panel
-        glDisable( GL_FOG );
-        glDisable( GL_DEPTH_TEST );
-        // glDisable( GL_CULL_FACE );
-        // glDisable( GL_TEXTURE_2D );
 
-        // update the controls subsystem
-        globals->get_controls()->update(delta_time_sec);
+//     sgEnviro.setLight(l->adj_fog_color());
 
-        hud_and_panel->apply();
-        fgCockpitUpdate();
+    // texture parameters
+    glHint( GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST );
 
-        // Use the hud_and_panel ssgSimpleState for rendering the ATC output
-        // This only works properly if called before the panel call
-        if((fgGetBool("/sim/ATC/enabled")) || (fgGetBool("/sim/ai-traffic/enabled")))
-            globals->get_ATC_display()->update(delta_time_sec);
+    double agl = current__view->getAltitudeASL_ft()*SG_FEET_TO_METER
+      - current__view->getSGLocation()->get_cur_elev_m();
 
-        // update the panel subsystem
-        if ( globals->get_current_panel() != NULL ) {
-            globals->get_current_panel()->update(delta_time_sec);
-        }
-        fgUpdate3DPanels();
-
-        // We can do translucent menus, so why not. :-)
-        menus->apply();
-        glBlendFunc ( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA ) ;
-        puDisplay();
-        // glDisable ( GL_BLEND ) ;
-
-        glEnable( GL_DEPTH_TEST );
-        glEnable( GL_FOG );
-
-        // Fade out the splash screen over the first three seconds.
-        double t = globals->get_sim_time_sec();
-        if ( t <= 1.0 ) {
-            fgSplashUpdate(0.0, 1.0);
-        } else if ( t <= 3.0) {
-            fgSplashUpdate(0.0, (3.0 - t) / 2.0);
-        }
+    float scene_nearplane, scene_farplane;
+    if ( agl > 10.0 ) {
+        scene_nearplane = 10.0f;
+        scene_farplane = 120000.0f;
+    } else {
+        scene_nearplane = groundlevel_nearplane->getDoubleValue();
+        scene_farplane = 120000.0f;
     }
+    setNearFar( scene_nearplane, scene_farplane );
+
+//     sgEnviro.startOfFrame(current__view->get_view_pos(), 
+//         current__view->get_world_up(),
+//         current__view->getLongitude_deg(),
+//         current__view->getLatitude_deg(),
+//         current__view->getAltitudeASL_ft() * SG_FEET_TO_METER,
+//         delta_time_sec);
+
+    // OSGFIXME
+//     sgEnviro.drawLightning();
+
+//        double current_view_origin_airspeed_horiz_kt =
+//         fgGetDouble("/velocities/airspeed-kt", 0.0)
+//                        * cos( fgGetDouble("/orientation/pitch-deg", 0.0)
+//                                * SGD_DEGREES_TO_RADIANS);
+       // TODO:find the real view speed, not the AC one
+//     sgEnviro.drawPrecipitation(
+//         fgGetDouble("/environment/metar/rain-norm", 0.0),
+//         fgGetDouble("/environment/metar/snow-norm", 0.0),
+//         fgGetDouble("/environment/metar/hail-norm", 0.0),
+//         current__view->getPitch_deg() + current__view->getPitchOffset_deg(),
+//         current__view->getRoll_deg() + current__view->getRollOffset_deg(),
+//         - current__view->getHeadingOffset_deg(),
+//                current_view_origin_airspeed_horiz_kt
+//                );
+
+    // OSGFIXME
+//     if( is_internal )
+//         shadows->endOfFrame();
+
+    // need to call the update visitor once
+    globals->get_aircraft_model()->select( true );
+    FGTileMgr::set_tile_filter( true );
+    mFrameStamp->setReferenceTime(globals->get_sim_time_sec());
+    mFrameStamp->setFrameNumber(1+mFrameStamp->getFrameNumber());
+    mFrameStamp->setCalendarTime(*globals->get_time_params()->getGmt());
+    mUpdateVisitor->setViewData(current__view->getViewPosition(),
+                                current__view->getViewOrientation());
+    mUpdateVisitor->setSceneryCenter(globals->get_scenery()->get_center());
+    SGVec3f direction(l->sun_vec()[0], l->sun_vec()[1], l->sun_vec()[2]);
+    mUpdateVisitor->setLight(direction, l->scene_ambient(),
+                             l->scene_diffuse(), l->scene_specular());
+    mUpdateVisitor->setVisibility(actual_visibility);
+
+    if (fgGetBool("/sim/panel-hotspots"))
+      sceneView->setCullMask(sceneView->getCullMask()|SG_NODEMASK_PICK_BIT);
+    else
+      sceneView->setCullMask(sceneView->getCullMask()&(~SG_NODEMASK_PICK_BIT));
+
+    sceneView->update();
+    sceneView->cull();
+    sceneView->draw();
 }
 
 
@@ -781,10 +831,15 @@ FGRenderer::resize( int width, int height ) {
         view_h = height;
     }
 
-    glViewport( 0, (GLint)(height - view_h), (GLint)(width), (GLint)(view_h) );
+    sceneView->getViewport()->setViewport(0, height - view_h, width, view_h);
+
+    static int lastwidth = 0;
+    static int lastheight = 0;
+    if (width != lastwidth)
+        fgSetInt("/sim/startup/xsize", lastwidth = width);
+    if (height != lastheight)
+        fgSetInt("/sim/startup/ysize", lastheight = height);
 
-    fgSetInt("/sim/startup/xsize", width);
-    fgSetInt("/sim/startup/ysize", height);
     guiInitMouse(width, height);
 
     // for all views
@@ -797,18 +852,7 @@ FGRenderer::resize( int width, int height ) {
 
       setFOV( viewmgr->get_current_view()->get_h_fov(),
               viewmgr->get_current_view()->get_v_fov() );
-      // cout << "setFOV(" << viewmgr->get_current_view()->get_h_fov()
-      //      << ", " << viewmgr->get_current_view()->get_v_fov() << ")"
-      //      << endl;
-
-#ifdef FG_USE_CLOUDS_3D
-      sgClouds3d->Resize( viewmgr->get_current_view()->get_h_fov(),
-                          viewmgr->get_current_view()->get_v_fov() );
-#endif
     }
-
-    fgHUDReshape();
-
 }
 
 
@@ -836,8 +880,10 @@ static void fgHackFrustum() {
     static SGPropertyNode *top_pct
         = fgGetNode("/sim/current-view/frustum-top-pct");
 
-    sgFrustum *f = ssgGetFrustum();
-
+    double left, right;
+    double bottom, top;
+    double zNear, zFar;
+    sceneView->getProjectionMatrixAsFrustum(left, right, bottom, top, zNear, zFar);
     // cout << " l = " << f->getLeft()
     //      << " r = " << f->getRight()
     //      << " b = " << f->getBot()
@@ -846,36 +892,36 @@ static void fgHackFrustum() {
     //      << " f = " << f->getFar()
     //      << endl;
 
-    double width = f->getRight() - f->getLeft();
-    double height = f->getTop() - f->getBot();
+    double width = right - left;
+    double height = top - bottom;
 
     double l, r, t, b;
 
     if ( left_pct != NULL ) {
-        l = f->getLeft() + width * left_pct->getDoubleValue();
+        l = left + width * left_pct->getDoubleValue();
     } else {
-        l = f->getLeft();
+        l = left;
     }
 
     if ( right_pct != NULL ) {
-        r = f->getLeft() + width * right_pct->getDoubleValue();
+        r = left + width * right_pct->getDoubleValue();
     } else {
-        r = f->getRight();
+        r = right;
     }
 
     if ( bottom_pct != NULL ) {
-        b = f->getBot() + height * bottom_pct->getDoubleValue();
+        b = bottom + height * bottom_pct->getDoubleValue();
     } else {
-        b = f->getBot();
+        b = bottom;
     }
 
     if ( top_pct != NULL ) {
-        t = f->getBot() + height * top_pct->getDoubleValue();
+        t = bottom + height * top_pct->getDoubleValue();
     } else {
-        t = f->getTop();
+        t = top;
     }
 
-    ssgSetFrustum(l, r, b, t, f->getNear(), f->getFar());
+    sceneView->setProjectionMatrixAsFrustum(l, r, b, t, zNear, zFar);
 }
 
 
@@ -898,11 +944,13 @@ void FGRenderer::setFOV( float w, float h ) {
     fov_width = w;
     fov_height = h;
 
+    sceneView->setProjectionMatrixAsPerspective(fov_height,
+                                                fov_width/fov_height,
+                                                fov_near, fov_far);
     // fully specify the view frustum before hacking it (so we don't
     // accumulate hacked effects
-    ssgSetFOV( w, h );
-    ssgSetNearFar( fov_near, fov_far );
     fgHackFrustum();
+//     sgEnviro.setFOV( w, h );
 }
 
 
@@ -910,15 +958,109 @@ void FGRenderer::setFOV( float w, float h ) {
  *  planes rather than calling the ssg routine directly
  */
 void FGRenderer::setNearFar( float n, float f ) {
+// OSGFIXME: we have currently too much z-buffer fights
+n = 0.1;
     fov_near = n;
     fov_far = f;
 
+    sceneView->setProjectionMatrixAsPerspective(fov_height,
+                                                fov_width/fov_height,
+                                                fov_near, fov_far);
+
     // fully specify the view frustum before hacking it (so we don't
     // accumulate hacked effects
-    ssgSetNearFar( n, f );
-    ssgSetFOV( fov_width, fov_height );
-
     fgHackFrustum();
 }
 
+bool
+FGRenderer::pick( unsigned x, unsigned y,
+                  std::vector<SGSceneryPick>& pickList )
+{
+  // wipe out the return ...
+  pickList.resize(0);
+
+  // we can get called early ...
+  if (!sceneView.valid())
+    return false;
+
+  osg::Node* sceneData = globals->get_scenery()->get_scene_graph();
+  if (!sceneData)
+    return false;
+  osg::Viewport* viewport = sceneView->getViewport();
+  if (!viewport)
+    return false;
+
+  // good old scenery center
+  SGVec3d center = globals->get_scenery()->get_center();
+
+  // don't know why, but the update has partly happened somehow,
+  // so update the scenery part of the viewer
+  FGViewer *current_view = globals->get_current_view();
+  // Force update of center dependent values ...
+  current_view->set_dirty();
+  SGVec3d position = current_view->getViewPosition();
+  SGQuatd attitude = current_view->getViewOrientation();
+  SGVec3d osgPosition = attitude.transform(center - position);
+  mCameraView->setPosition(osgPosition.osg());
+  mCameraView->setAttitude(inverse(attitude).osg());
+
+  osg::Matrix projection(sceneView->getProjectionMatrix());
+  osg::Matrix modelview(sceneView->getViewMatrix());
+
+  osg::NodePathList nodePath = sceneData->getParentalNodePaths();
+  // modify the view matrix so that it accounts for this nodePath's
+  // accumulated transform
+  if (!nodePath.empty())
+    modelview.preMult(computeLocalToWorld(nodePath.front()));
+
+  // swap the y values ...
+  y = viewport->height() - y;
+  // set up the pick visitor
+  osgUtil::PickVisitor pickVisitor(viewport, projection, modelview, x, y);
+  sceneData->accept(pickVisitor);
+  if (!pickVisitor.hits())
+    return false;
+
+  // collect all interaction callbacks on the pick ray.
+  // They get stored in the pickCallbacks list where they are sorted back
+  // to front and croasest to finest wrt the scenery node they are attached to
+  osgUtil::PickVisitor::LineSegmentHitListMap::const_iterator mi;
+  for (mi = pickVisitor.getSegHitList().begin();
+       mi != pickVisitor.getSegHitList().end();
+       ++mi) {
+    osgUtil::IntersectVisitor::HitList::const_iterator hi;
+    for (hi = mi->second.begin(); hi != mi->second.end(); ++hi) {
+      // ok, go back the nodes and ask for intersection callbacks,
+      // execute them in top down order
+      const osg::NodePath& np = hi->getNodePath();
+      osg::NodePath::const_reverse_iterator npi;
+      for (npi = np.rbegin(); npi != np.rend(); ++npi) {
+        SGSceneUserData* ud = SGSceneUserData::getSceneUserData(*npi);
+        if (!ud)
+          continue;
+        for (unsigned i = 0; i < ud->getNumPickCallbacks(); ++i) {
+          SGPickCallback* pickCallback = ud->getPickCallback(i);
+          if (!pickCallback)
+            continue;
+          SGSceneryPick sceneryPick;
+          /// note that this is done totally in doubles instead of
+          /// just using getWorldIntersectionPoint
+          osg::Vec3d localPt = hi->getLocalIntersectPoint();
+          sceneryPick.info.local = SGVec3d(localPt);
+          if (hi->getMatrix())
+            sceneryPick.info.wgs84 = SGVec3d(localPt*(*hi->getMatrix()));
+          else
+            sceneryPick.info.wgs84 = SGVec3d(localPt);
+          sceneryPick.info.wgs84 += globals->get_scenery()->get_center();
+          sceneryPick.callback = pickCallback;
+          pickList.push_back(sceneryPick);
+        }
+      }
+    }
+  }
+
+  return !pickList.empty();
+}
+
 // end of renderer.cxx
+