src/Viewer/renderer.cxx

   1 // renderer.cxx -- top level sim routines
   2 //
   3 // Written by Curtis Olson, started May 1997.
   4 // This file contains parts of main.cxx prior to october 2004
   5 //
   6 // Copyright (C) 1997 - 2002  Curtis L. Olson  - http://www.flightgear.org/~curt
   7 //
   8 // This program is free software; you can redistribute it and/or
   9 // modify it under the terms of the GNU General Public License as
  10 // published by the Free Software Foundation; either version 2 of the
  11 // License, or (at your option) any later version.
  12 //
  13 // This program is distributed in the hope that it will be useful, but
  14 // WITHOUT ANY WARRANTY; without even the implied warranty of
  15 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16 // General Public License for more details.
  17 //
  18 // You should have received a copy of the GNU General Public License
  19 // along with this program; if not, write to the Free Software
  20 // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  21
  22 #ifdef HAVE_CONFIG_H
  23 #  include <config.h>
  24 #endif
  25
  26 #ifdef HAVE_WINDOWS_H
  27 #  include <windows.h>
  28 #endif
  29
  30 #include <simgear/compiler.h>
  31
  32 #include <algorithm>
  33 #include <iostream>
  34 #include <map>
  35 #include <vector>
  36 #include <typeinfo>
  37
  38 #include <boost/foreach.hpp>
  39
  40 #include <osg/ref_ptr>
  41 #include <osg/AlphaFunc>
  42 #include <osg/BlendFunc>
  43 #include <osg/Camera>
  44 #include <osg/CullFace>
  45 #include <osg/CullStack>
  46 #include <osg/Depth>
  47 #include <osg/Fog>
  48 #include <osg/Group>
  49 #include <osg/Hint>
  50 #include <osg/Light>
  51 #include <osg/LightModel>
  52 #include <osg/LightSource>
  53 #include <osg/Material>
  54 #include <osg/Math>
  55 #include <osg/NodeCallback>
  56 #include <osg/Notify>
  57 #include <osg/PolygonMode>
  58 #include <osg/PolygonOffset>
  59 #include <osg/Program>
  60 #include <osg/Version>
  61 #include <osg/TexEnv>
  62
  63 #include <osgUtil/LineSegmentIntersector>
  64
  65 #include <osg/io_utils>
  66 #include <osgDB/WriteFile>
  67 #include <osgViewer/Renderer>
  68
  69 #include <simgear/scene/material/matlib.hxx>
  70 #include <simgear/scene/material/EffectCullVisitor.hxx>
  71 #include <simgear/scene/material/Effect.hxx>
  72 #include <simgear/scene/material/EffectGeode.hxx>
  73 #include <simgear/scene/material/EffectBuilder.hxx>
  74 #include <simgear/scene/model/animation.hxx>
  75 #include <simgear/scene/model/placement.hxx>
  76 #include <simgear/scene/sky/sky.hxx>
  77 #include <simgear/scene/util/SGUpdateVisitor.hxx>
  78 #include <simgear/scene/util/RenderConstants.hxx>
  79 #include <simgear/scene/util/SGSceneUserData.hxx>
  80 #include <simgear/scene/tgdb/GroundLightManager.hxx>
  81 #include <simgear/scene/tgdb/pt_lights.hxx>
  82 #include <simgear/scene/tgdb/userdata.hxx>
  83 #include <simgear/structure/OSGUtils.hxx>
  84 #include <simgear/props/props.hxx>
  85 #include <simgear/timing/sg_time.hxx>
  86 #include <simgear/ephemeris/ephemeris.hxx>
  87 #include <simgear/math/sg_random.h>
  88 #ifdef FG_JPEG_SERVER
  89 #include <simgear/screen/jpgfactory.hxx>
  90 #endif
  91
  92 #include <Time/light.hxx>
  93 #include <Time/light.hxx>
  94 #include <Cockpit/panel.hxx>
  95
  96 #include <Model/panelnode.hxx>
  97 #include <Model/modelmgr.hxx>
  98 #include <Model/acmodel.hxx>
  99 #include <Scenery/scenery.hxx>
 100 #include <Scenery/redout.hxx>
 101 #include <GUI/new_gui.hxx>
 102 #include <Instrumentation/HUD/HUD.hxx>
 103 #include <Environment/precipitation_mgr.hxx>
 104 #include <Environment/environment_mgr.hxx>
 105
 106 //#include <Main/main.hxx>
 107 #include "viewer.hxx"
 108 #include "viewmgr.hxx"
 109 #include "splash.hxx"
 110 #include "renderer.hxx"
 111 #include "CameraGroup.hxx"
 112 #include "FGEventHandler.hxx"
 113
 114 using namespace osg;
 115 using namespace simgear;
 116 using namespace flightgear;
 117
 118 class FGHintUpdateCallback : public osg::StateAttribute::Callback {
 119 public:
 120   FGHintUpdateCallback(const char* configNode) :
 121     mConfigNode(fgGetNode(configNode, true))
 122   { }
 123   virtual void operator()(osg::StateAttribute* stateAttribute,
 124                           osg::NodeVisitor*)
 125   {
 126     assert(dynamic_cast<osg::Hint*>(stateAttribute));
 127     osg::Hint* hint = static_cast<osg::Hint*>(stateAttribute);
 128
 129     const char* value = mConfigNode->getStringValue();
 130     if (!value)
 131       hint->setMode(GL_DONT_CARE);
 132     else if (0 == strcmp(value, "nicest"))
 133       hint->setMode(GL_NICEST);
 134     else if (0 == strcmp(value, "fastest"))
 135       hint->setMode(GL_FASTEST);
 136     else
 137       hint->setMode(GL_DONT_CARE);
 138   }
 139 private:
 140   SGPropertyNode_ptr mConfigNode;
 141 };
 142
 143
 144 class SGPuDrawable : public osg::Drawable {
 145 public:
 146   SGPuDrawable()
 147   {
 148     // Dynamic stuff, do not store geometry
 149     setUseDisplayList(false);
 150     setDataVariance(Object::DYNAMIC);
 151
 152     osg::StateSet* stateSet = getOrCreateStateSet();
 153     stateSet->setRenderBinDetails(1001, "RenderBin");
 154     // speed optimization?
 155     stateSet->setMode(GL_CULL_FACE, osg::StateAttribute::OFF);
 156     // We can do translucent menus, so why not. :-)
 157     stateSet->setAttribute(new osg::BlendFunc(osg::BlendFunc::SRC_ALPHA, osg::BlendFunc::ONE_MINUS_SRC_ALPHA));
 158     stateSet->setMode(GL_BLEND, osg::StateAttribute::ON);
 159     stateSet->setTextureMode(0, GL_TEXTURE_2D, osg::StateAttribute::OFF);
 160
 161     stateSet->setTextureAttribute(0, new osg::TexEnv(osg::TexEnv::MODULATE));
 162
 163     stateSet->setMode(GL_FOG, osg::StateAttribute::OFF);
 164     stateSet->setMode(GL_DEPTH_TEST, osg::StateAttribute::OFF);
 165   }
 166   virtual void drawImplementation(osg::RenderInfo& renderInfo) const
 167   { drawImplementation(*renderInfo.getState()); }
 168   void drawImplementation(osg::State& state) const
 169   {
 170     state.setActiveTextureUnit(0);
 171     state.setClientActiveTextureUnit(0);
 172
 173     state.disableAllVertexArrays();
 174
 175     glPushAttrib(GL_ALL_ATTRIB_BITS);
 176     glPushClientAttrib(~0u);
 177
 178     puDisplay();
 179
 180     glPopClientAttrib();
 181     glPopAttrib();
 182   }
 183
 184   virtual osg::Object* cloneType() const { return new SGPuDrawable; }
 185   virtual osg::Object* clone(const osg::CopyOp&) const { return new SGPuDrawable; }
 186
 187 private:
 188 };
 189
 190 class SGHUDDrawable : public osg::Drawable {
 191 public:
 192   SGHUDDrawable()
 193   {
 194     // Dynamic stuff, do not store geometry
 195     setUseDisplayList(false);
 196     setDataVariance(Object::DYNAMIC);
 197
 198     osg::StateSet* stateSet = getOrCreateStateSet();
 199     stateSet->setRenderBinDetails(1000, "RenderBin");
 200
 201     // speed optimization?
 202     stateSet->setMode(GL_CULL_FACE, osg::StateAttribute::OFF);
 203     stateSet->setAttribute(new osg::BlendFunc(osg::BlendFunc::SRC_ALPHA, osg::BlendFunc::ONE_MINUS_SRC_ALPHA));
 204     stateSet->setMode(GL_BLEND, osg::StateAttribute::ON);
 205     stateSet->setMode(GL_FOG, osg::StateAttribute::OFF);
 206     stateSet->setMode(GL_DEPTH_TEST, osg::StateAttribute::OFF);
 207
 208     stateSet->setTextureAttribute(0, new osg::TexEnv(osg::TexEnv::MODULATE));
 209   }
 210   virtual void drawImplementation(osg::RenderInfo& renderInfo) const
 211   { drawImplementation(*renderInfo.getState()); }
 212   void drawImplementation(osg::State& state) const
 213   {
 214     state.setActiveTextureUnit(0);
 215     state.setClientActiveTextureUnit(0);
 216     state.disableAllVertexArrays();
 217
 218     glPushAttrib(GL_ALL_ATTRIB_BITS);
 219     glPushClientAttrib(~0u);
 220
 221     HUD *hud = static_cast<HUD*>(globals->get_subsystem("hud"));
 222     hud->draw(state);
 223
 224     glPopClientAttrib();
 225     glPopAttrib();
 226   }
 227
 228   virtual osg::Object* cloneType() const { return new SGHUDDrawable; }
 229   virtual osg::Object* clone(const osg::CopyOp&) const { return new SGHUDDrawable; }
 230
 231 private:
 232 };
 233
 234 class FGLightSourceUpdateCallback : public osg::NodeCallback {
 235 public:
 236
 237   /**
 238    * @param isSun true if the light is the actual sun i.e., for
 239    * illuminating the moon.
 240    */
 241   FGLightSourceUpdateCallback(bool isSun = false) : _isSun(isSun) {}
 242   FGLightSourceUpdateCallback(const FGLightSourceUpdateCallback& nc,
 243                               const CopyOp& op)
 244     : NodeCallback(nc, op), _isSun(nc._isSun)
 245   {}
 246   META_Object(flightgear,FGLightSourceUpdateCallback);
 247
 248   virtual void operator()(osg::Node* node, osg::NodeVisitor* nv)
 249   {
 250     assert(dynamic_cast<osg::LightSource*>(node));
 251     osg::LightSource* lightSource = static_cast<osg::LightSource*>(node);
 252     osg::Light* light = lightSource->getLight();
 253
 254     FGLight *l = static_cast<FGLight*>(globals->get_subsystem("lighting"));
 255     if (_isSun) {
 256       light->setAmbient(Vec4(0.0f, 0.0f, 0.0f, 0.0f));
 257       light->setDiffuse(Vec4(1.0f, 1.0f, 1.0f, 1.0f));
 258       light->setSpecular(Vec4(0.0f, 0.0f, 0.0f, 0.0f));
 259     } else {
 260       light->setAmbient(toOsg(l->scene_ambient()));
 261       light->setDiffuse(toOsg(l->scene_diffuse()));
 262       light->setSpecular(toOsg(l->scene_specular()));
 263     }
 264     osg::Vec4f position(l->sun_vec()[0], l->sun_vec()[1], l->sun_vec()[2], 0);
 265     light->setPosition(position);
 266
 267     traverse(node, nv);
 268   }
 269 private:
 270   const bool _isSun;
 271 };
 272
 273 class FGWireFrameModeUpdateCallback : public osg::StateAttribute::Callback {
 274 public:
 275   FGWireFrameModeUpdateCallback() :
 276     mWireframe(fgGetNode("/sim/rendering/wireframe", true))
 277   { }
 278   virtual void operator()(osg::StateAttribute* stateAttribute,
 279                           osg::NodeVisitor*)
 280   {
 281     assert(dynamic_cast<osg::PolygonMode*>(stateAttribute));
 282     osg::PolygonMode* polygonMode;
 283     polygonMode = static_cast<osg::PolygonMode*>(stateAttribute);
 284
 285     if (mWireframe->getBoolValue())
 286       polygonMode->setMode(osg::PolygonMode::FRONT_AND_BACK,
 287                            osg::PolygonMode::LINE);
 288     else
 289       polygonMode->setMode(osg::PolygonMode::FRONT_AND_BACK,
 290                            osg::PolygonMode::FILL);
 291   }
 292 private:
 293   SGPropertyNode_ptr mWireframe;
 294 };
 295
 296 class FGLightModelUpdateCallback : public osg::StateAttribute::Callback {
 297 public:
 298   FGLightModelUpdateCallback() :
 299     mHighlights(fgGetNode("/sim/rendering/specular-highlight", true))
 300   { }
 301   virtual void operator()(osg::StateAttribute* stateAttribute,
 302                           osg::NodeVisitor*)
 303   {
 304     assert(dynamic_cast<osg::LightModel*>(stateAttribute));
 305     osg::LightModel* lightModel;
 306     lightModel = static_cast<osg::LightModel*>(stateAttribute);
 307
 308 #if 0
 309     FGLight *l = static_cast<FGLight*>(globals->get_subsystem("lighting"));
 310     lightModel->setAmbientIntensity(toOsg(l->scene_ambient());
 311 #else
 312     lightModel->setAmbientIntensity(osg::Vec4(0, 0, 0, 1));
 313 #endif
 314     lightModel->setTwoSided(true);
 315     lightModel->setLocalViewer(false);
 316
 317     if (mHighlights->getBoolValue()) {
 318       lightModel->setColorControl(osg::LightModel::SEPARATE_SPECULAR_COLOR);
 319     } else {
 320       lightModel->setColorControl(osg::LightModel::SINGLE_COLOR);
 321     }
 322   }
 323 private:
 324   SGPropertyNode_ptr mHighlights;
 325 };
 326
 327 class FGFogEnableUpdateCallback : public osg::StateSet::Callback {
 328 public:
 329   FGFogEnableUpdateCallback() :
 330     mFogEnabled(fgGetNode("/sim/rendering/fog", true))
 331   { }
 332   virtual void operator()(osg::StateSet* stateSet, osg::NodeVisitor*)
 333   {
 334     if (strcmp(mFogEnabled->getStringValue(), "disabled") == 0) {
 335       stateSet->setMode(GL_FOG, osg::StateAttribute::OFF);
 336     } else {
 337       stateSet->setMode(GL_FOG, osg::StateAttribute::ON);
 338     }
 339   }
 340 private:
 341   SGPropertyNode_ptr mFogEnabled;
 342 };
 343
 344 class FGFogUpdateCallback : public osg::StateAttribute::Callback {
 345 public:
 346   virtual void operator () (osg::StateAttribute* sa, osg::NodeVisitor* nv)
 347   {
 348     assert(dynamic_cast<SGUpdateVisitor*>(nv));
 349     assert(dynamic_cast<osg::Fog*>(sa));
 350     SGUpdateVisitor* updateVisitor = static_cast<SGUpdateVisitor*>(nv);
 351     osg::Fog* fog = static_cast<osg::Fog*>(sa);
 352     fog->setMode(osg::Fog::EXP2);
 353     fog->setColor(toOsg(updateVisitor->getFogColor()));
 354     fog->setDensity(updateVisitor->getFogExp2Density());
 355   }
 356 };
 357
 358 // update callback for the switch node guarding that splash
 359 class FGScenerySwitchCallback : public osg::NodeCallback {
 360 public:
 361   virtual void operator()(osg::Node* node, osg::NodeVisitor* nv)
 362   {
 363     assert(dynamic_cast<osg::Switch*>(node));
 364     osg::Switch* sw = static_cast<osg::Switch*>(node);
 365
 366     bool enabled = scenery_enabled;
 367     sw->setValue(0, enabled);
 368     if (!enabled)
 369       return;
 370     traverse(node, nv);
 371   }
 372
 373   static bool scenery_enabled;
 374 };
 375
 376 bool FGScenerySwitchCallback::scenery_enabled = false;
 377
 378 static osg::ref_ptr<osg::FrameStamp> mFrameStamp = new osg::FrameStamp;
 379 static osg::ref_ptr<SGUpdateVisitor> mUpdateVisitor= new SGUpdateVisitor;
 380
 381 static osg::ref_ptr<osg::Group> mRealRoot = new osg::Group;
 382 static osg::ref_ptr<osg::Group> mDeferredRealRoot = new osg::Group;
 383
 384 static osg::ref_ptr<osg::Group> mRoot = new osg::Group;
 385
 386 #ifdef FG_JPEG_SERVER
 387 static void updateRenderer()
 388 {
 389     globals->get_renderer()->update();
 390 }
 391 #endif
 392
 393 FGRenderer::FGRenderer() :
 394     _sky(NULL),
 395     _ambientFactor( new osg::Uniform( "fg_SunAmbientColor", osg::Vec4f() ) ),
 396     _sunDiffuse( new osg::Uniform( "fg_SunDiffuseColor", osg::Vec4f() ) ),
 397     _sunSpecular( new osg::Uniform( "fg_SunSpecularColor", osg::Vec4f() ) ),
 398     _sunDirection( new osg::Uniform( "fg_SunDirection", osg::Vec3f() ) ),
 399     _planes( new osg::Uniform( "fg_Planes", osg::Vec3f() ) ),
 400     _fogColor( new osg::Uniform( "fg_FogColor", osg::Vec4f(1.0, 1.0, 1.0, 1.0) ) ),
 401     _fogDensity( new osg::Uniform( "fg_FogDensity", 0.0001f ) ),
 402     _shadowNumber( new osg::Uniform( "fg_ShadowNumber", (int)4 ) ),
 403     _shadowDistances( new osg::Uniform( "fg_ShadowDistances", osg::Vec4f(5.0, 50.0, 500.0, 5000.0 ) ) ),
 404     _depthInColor( new osg::Uniform( "fg_DepthInColor", false ) )
 405 {
 406 #ifdef FG_JPEG_SERVER
 407    jpgRenderFrame = updateRenderer;
 408 #endif
 409    eventHandler = new FGEventHandler;
 410
 411    _numCascades = 4;
 412    _cascadeFar[0] = 5.f;
 413    _cascadeFar[1] = 50.f;
 414    _cascadeFar[2] = 500.f;
 415    _cascadeFar[3] = 5000.f;
 416 }
 417
 418 FGRenderer::~FGRenderer()
 419 {
 420 #ifdef FG_JPEG_SERVER
 421    jpgRenderFrame = NULL;
 422 #endif
 423     delete _sky;
 424 }
 425
 426 // Initialize various GL/view parameters
 427 // XXX This should be called "preinit" or something, as it initializes
 428 // critical parts of the scene graph in addition to the splash screen.
 429 void
 430 FGRenderer::splashinit( void ) {
 431     osgViewer::Viewer* viewer = getViewer();
 432     mRealRoot = dynamic_cast<osg::Group*>(viewer->getSceneData());
 433     ref_ptr<Node> splashNode = fgCreateSplashNode();
 434     if (_classicalRenderer) {
 435         mRealRoot->addChild(splashNode.get());
 436     } else {
 437         for (   CameraGroup::CameraIterator ii = CameraGroup::getDefault()->camerasBegin();
 438                 ii != CameraGroup::getDefault()->camerasEnd();
 439                 ++ii )
 440         {
 441             CameraInfo* info = ii->get();
 442             Camera* camera = info->getCamera(DISPLAY_CAMERA);
 443             if (camera == 0) continue;
 444
 445             camera->addChild(splashNode.get());
 446         }
 447     }
 448     mFrameStamp = viewer->getFrameStamp();
 449     // Scene doesn't seem to pass the frame stamp to the update
 450     // visitor automatically.
 451     mUpdateVisitor->setFrameStamp(mFrameStamp.get());
 452     viewer->setUpdateVisitor(mUpdateVisitor.get());
 453     fgSetDouble("/sim/startup/splash-alpha", 1.0);
 454 }
 455
 456 class ShadowMapSizeListener : public SGPropertyChangeListener {
 457 public:
 458     virtual void valueChanged(SGPropertyNode* node) {
 459         globals->get_renderer()->updateShadowMapSize(node->getIntValue());
 460     }
 461 };
 462
 463 class ShadowEnabledListener : public SGPropertyChangeListener {
 464 public:
 465     virtual void valueChanged(SGPropertyNode* node) {
 466         globals->get_renderer()->enableShadows(node->getBoolValue());
 467     }
 468 };
 469
 470 class ShadowNumListener : public SGPropertyChangeListener {
 471 public:
 472     virtual void valueChanged(SGPropertyNode* node) {
 473         globals->get_renderer()->updateCascadeNumber(node->getIntValue());
 474     }
 475 };
 476
 477 class ShadowRangeListener : public SGPropertyChangeListener {
 478 public:
 479     virtual void valueChanged(SGPropertyNode* node) {
 480         globals->get_renderer()->updateCascadeFar(node->getIndex(), node->getFloatValue());
 481     }
 482 };
 483
 484 void
 485 FGRenderer::init( void )
 486 {
 487     sgUserDataInit( globals->get_props() );
 488
 489     _classicalRenderer = !fgGetBool("/sim/rendering/rembrandt/enabled", false);
 490     _shadowMapSize    = fgGetInt( "/sim/rendering/shadows/map-size", 4096 );
 491     fgAddChangeListener( new ShadowMapSizeListener, "/sim/rendering/shadows/map-size" );
 492     fgAddChangeListener( new ShadowEnabledListener, "/sim/rendering/shadows/enabled" );
 493     ShadowRangeListener* srl = new ShadowRangeListener;
 494     fgAddChangeListener(srl, "/sim/rendering/shadows/cascade-far-m[0]");
 495     fgAddChangeListener(srl, "/sim/rendering/shadows/cascade-far-m[1]");
 496     fgAddChangeListener(srl, "/sim/rendering/shadows/cascade-far-m[2]");
 497     fgAddChangeListener(srl, "/sim/rendering/shadows/cascade-far-m[3]");
 498     fgAddChangeListener(new ShadowNumListener, "/sim/rendering/shadows/num-cascades");
 499     _numCascades = fgGetInt("/sim/rendering/shadows/num-cascades", 4);
 500     _cascadeFar[0] = fgGetFloat("/sim/rendering/shadows/cascade-far-m[0]", 5.0f);
 501     _cascadeFar[1] = fgGetFloat("/sim/rendering/shadows/cascade-far-m[1]", 50.0f);
 502     _cascadeFar[2] = fgGetFloat("/sim/rendering/shadows/cascade-far-m[2]", 500.0f);
 503     _cascadeFar[3] = fgGetFloat("/sim/rendering/shadows/cascade-far-m[3]", 5000.0f);
 504     updateCascadeNumber(_numCascades);
 505     updateCascadeFar(0, _cascadeFar[0]);
 506     updateCascadeFar(1, _cascadeFar[1]);
 507     updateCascadeFar(2, _cascadeFar[2]);
 508     updateCascadeFar(3, _cascadeFar[3]);
 509     _useColorForDepth = fgGetBool( "/sim/rendering/rembrandt/use-color-for-depth", false );
 510     _depthInColor->set( _useColorForDepth );
 511
 512     _renderer         = fgGetString("/sim/rendering/rembrandt/renderer", "default-pipeline");
 513     if (!_classicalRenderer)
 514         _pipeline = makeRenderingPipeline(_renderer, 0);
 515     _scenery_loaded   = fgGetNode("/sim/sceneryloaded", true);
 516     _scenery_override = fgGetNode("/sim/sceneryloaded-override", true);
 517     _panel_hotspots   = fgGetNode("/sim/panel-hotspots", true);
 518     _virtual_cockpit  = fgGetNode("/sim/virtual-cockpit", true);
 519
 520     _sim_delta_sec = fgGetNode("/sim/time/delta-sec", true);
 521
 522     _xsize         = fgGetNode("/sim/startup/xsize", true);
 523     _ysize         = fgGetNode("/sim/startup/ysize", true);
 524     _splash_alpha  = fgGetNode("/sim/startup/splash-alpha", true);
 525
 526     _skyblend             = fgGetNode("/sim/rendering/skyblend", true);
 527     _point_sprites        = fgGetNode("/sim/rendering/point-sprites", true);
 528     _enhanced_lighting    = fgGetNode("/sim/rendering/enhanced-lighting", true);
 529     _distance_attenuation = fgGetNode("/sim/rendering/distance-attenuation", true);
 530     _horizon_effect       = fgGetNode("/sim/rendering/horizon-effect", true);
 531     _textures             = fgGetNode("/sim/rendering/textures", true);
 532
 533     _altitude_ft = fgGetNode("/position/altitude-ft", true);
 534
 535     _cloud_status = fgGetNode("/environment/clouds/status", true);
 536     _visibility_m = fgGetNode("/environment/visibility-m", true);
 537
 538     bool use_point_sprites = _point_sprites->getBoolValue();
 539     bool enhanced_lighting = _enhanced_lighting->getBoolValue();
 540     bool distance_attenuation = _distance_attenuation->getBoolValue();
 541
 542     SGConfigureDirectionalLights( use_point_sprites, enhanced_lighting,
 543                                   distance_attenuation );
 544
 545     if (const char* tc = fgGetString("/sim/rendering/texture-compression", NULL)) {
 546       if (strcmp(tc, "false") == 0 || strcmp(tc, "off") == 0 ||
 547           strcmp(tc, "0") == 0 || strcmp(tc, "no") == 0 ||
 548           strcmp(tc, "none") == 0) {
 549         SGSceneFeatures::instance()->setTextureCompression(SGSceneFeatures::DoNotUseCompression);
 550       } else if (strcmp(tc, "arb") == 0) {
 551         SGSceneFeatures::instance()->setTextureCompression(SGSceneFeatures::UseARBCompression);
 552       } else if (strcmp(tc, "dxt1") == 0) {
 553         SGSceneFeatures::instance()->setTextureCompression(SGSceneFeatures::UseDXT1Compression);
 554       } else if (strcmp(tc, "dxt3") == 0) {
 555         SGSceneFeatures::instance()->setTextureCompression(SGSceneFeatures::UseDXT3Compression);
 556       } else if (strcmp(tc, "dxt5") == 0) {
 557         SGSceneFeatures::instance()->setTextureCompression(SGSceneFeatures::UseDXT5Compression);
 558       } else {
 559         SG_LOG(SG_VIEW, SG_WARN, "Unknown texture compression setting!");
 560       }
 561     }
 562
 563 // create sky, but can't build until setupView, since we depend
 564 // on other subsystems to be inited, eg Ephemeris
 565     _sky = new SGSky;
 566
 567     SGPath texture_path(globals->get_fg_root());
 568     texture_path.append("Textures");
 569     texture_path.append("Sky");
 570     for (int i = 0; i < FGEnvironmentMgr::MAX_CLOUD_LAYERS; i++) {
 571         SGCloudLayer * layer = new SGCloudLayer(texture_path.str());
 572         _sky->add_cloud_layer(layer);
 573     }
 574
 575     _sky->texture_path( texture_path.str() );
 576
 577     if (!_classicalRenderer) {
 578         eventHandler->setChangeStatsCameraRenderOrder( true );
 579     }
 580 }
 581
 582 void installCullVisitor(Camera* camera)
 583 {
 584     osgViewer::Renderer* renderer
 585         = static_cast<osgViewer::Renderer*>(camera->getRenderer());
 586     for (int i = 0; i < 2; ++i) {
 587         osgUtil::SceneView* sceneView = renderer->getSceneView(i);
 588 #if SG_OSG_VERSION_LESS_THAN(3,0,0)
 589         sceneView->setCullVisitor(new simgear::EffectCullVisitor);
 590 #else
 591         osg::ref_ptr<osgUtil::CullVisitor::Identifier> identifier;
 592         identifier = sceneView->getCullVisitor()->getIdentifier();
 593         sceneView->setCullVisitor(new simgear::EffectCullVisitor);
 594         sceneView->getCullVisitor()->setIdentifier(identifier.get());
 595
 596         identifier = sceneView->getCullVisitorLeft()->getIdentifier();
 597         sceneView->setCullVisitorLeft(sceneView->getCullVisitor()->clone());
 598         sceneView->getCullVisitorLeft()->setIdentifier(identifier.get());
 599
 600         identifier = sceneView->getCullVisitorRight()->getIdentifier();
 601         sceneView->setCullVisitorRight(sceneView->getCullVisitor()->clone());
 602         sceneView->getCullVisitorRight()->setIdentifier(identifier.get());
 603 #endif
 604     }
 605 }
 606
 607 CameraInfo*
 608 FGRenderer::buildRenderingPipeline(CameraGroup* cgroup, unsigned flags, Camera* camera,
 609                                    const Matrix& view,
 610                                    const Matrix& projection,
 611                                                                    osg::GraphicsContext* gc,
 612                                    bool useMasterSceneData)
 613 {
 614         CameraInfo* info = 0;
 615         if (!_classicalRenderer && (flags & (CameraGroup::GUI | CameraGroup::ORTHO)) == 0)
 616                 info = buildDeferredPipeline( cgroup, flags, camera, view, projection, gc );
 617
 618         if (info) {
 619                 return info;
 620         } else {
 621                 if ((flags & (CameraGroup::GUI | CameraGroup::ORTHO)) == 0)
 622                         _classicalRenderer = true;
 623                 return buildClassicalPipeline( cgroup, flags, camera, view, projection, useMasterSceneData );
 624         }
 625 }
 626
 627 CameraInfo*
 628 FGRenderer::buildClassicalPipeline(CameraGroup* cgroup, unsigned flags, osg::Camera* camera,
 629                                 const osg::Matrix& view,
 630                                 const osg::Matrix& projection,
 631                                 bool useMasterSceneData)
 632 {
 633     CameraInfo* info = new CameraInfo(flags);
 634     // The camera group will always update the camera
 635     camera->setReferenceFrame(Transform::ABSOLUTE_RF);
 636
 637     Camera* farCamera = 0;
 638     if ((flags & (CameraGroup::GUI | CameraGroup::ORTHO)) == 0) {
 639         farCamera = new Camera;
 640         farCamera->setAllowEventFocus(camera->getAllowEventFocus());
 641         farCamera->setGraphicsContext(camera->getGraphicsContext());
 642         farCamera->setCullingMode(camera->getCullingMode());
 643         farCamera->setInheritanceMask(camera->getInheritanceMask());
 644         farCamera->setReferenceFrame(Transform::ABSOLUTE_RF);
 645         // Each camera's viewport is written when the window is
 646         // resized; if the the viewport isn't copied here, it gets updated
 647         // twice and ends up with the wrong value.
 648         farCamera->setViewport(simgear::clone(camera->getViewport()));
 649         farCamera->setDrawBuffer(camera->getDrawBuffer());
 650         farCamera->setReadBuffer(camera->getReadBuffer());
 651         farCamera->setRenderTargetImplementation(
 652             camera->getRenderTargetImplementation());
 653         const Camera::BufferAttachmentMap& bufferMap
 654             = camera->getBufferAttachmentMap();
 655         if (bufferMap.count(Camera::COLOR_BUFFER) != 0) {
 656             farCamera->attach(
 657                 Camera::COLOR_BUFFER,
 658                 bufferMap.find(Camera::COLOR_BUFFER)->second._texture.get());
 659         }
 660         cgroup->getViewer()->addSlave(farCamera, projection, view, useMasterSceneData);
 661         installCullVisitor(farCamera);
 662                 int farSlaveIndex = cgroup->getViewer()->getNumSlaves() - 1;
 663                 info->addCamera( FAR_CAMERA, farCamera, farSlaveIndex );
 664         farCamera->setRenderOrder(Camera::POST_RENDER, farSlaveIndex);
 665         camera->setCullMask(camera->getCullMask() & ~simgear::BACKGROUND_BIT);
 666         camera->setClearMask(GL_DEPTH_BUFFER_BIT);
 667     }
 668     cgroup->getViewer()->addSlave(camera, projection, view, useMasterSceneData);
 669     installCullVisitor(camera);
 670     int slaveIndex = cgroup->getViewer()->getNumSlaves() - 1;
 671         info->addCamera( MAIN_CAMERA, camera, slaveIndex );
 672     camera->setRenderOrder(Camera::POST_RENDER, slaveIndex);
 673     cgroup->addCamera(info);
 674     return info;
 675 }
 676
 677 class FGDeferredRenderingCameraCullCallback : public osg::NodeCallback {
 678 public:
 679     FGDeferredRenderingCameraCullCallback( const std::string& k, CameraInfo* i, bool nd = false ) : kind( k ), info( i ), needsDuDv(nd) {}
 680     virtual void operator()( osg::Node *n, osg::NodeVisitor *nv) {
 681         simgear::EffectCullVisitor* cv = dynamic_cast<simgear::EffectCullVisitor*>(nv);
 682         osg::Camera* camera = static_cast<osg::Camera*>(n);
 683
 684         cv->clearBufferList();
 685         for (RenderBufferMap::iterator ii = info->buffers.begin(); ii != info->buffers.end(); ++ii) {
 686             cv->addBuffer(ii->first, ii->second.texture);
 687         }
 688
 689         if ( !info->getRenderStageInfo(kind).fullscreen )
 690             info->setMatrices( camera );
 691
 692         if (needsDuDv) {
 693             osg::Matrix projInverse;
 694             info->projInverse->get( projInverse );
 695
 696             osg::Vec4 p0 = osg::Vec4( -1.0, -1.0, 0.0, 1.0 ) * projInverse;
 697             info->du->set( osg::Vec4(  1.0, -1.0, 0.0, 1.0 ) * projInverse - p0 );
 698             info->dv->set( osg::Vec4( -1.0,  1.0, 0.0, 1.0 ) * projInverse - p0 );
 699         }
 700
 701         cv->traverse( *camera );
 702
 703         if ( kind == GEOMETRY_CAMERA ) {
 704             // Save transparent bins to render later
 705             osgUtil::RenderStage* renderStage = cv->getRenderStage();
 706             osgUtil::RenderBin::RenderBinList& rbl = renderStage->getRenderBinList();
 707             for (osgUtil::RenderBin::RenderBinList::iterator rbi = rbl.begin(); rbi != rbl.end(); ) {
 708                 if (rbi->second->getSortMode() == osgUtil::RenderBin::SORT_BACK_TO_FRONT) {
 709                     info->savedTransparentBins.insert( std::make_pair( rbi->first, rbi->second ) );
 710                     rbl.erase( rbi++ );
 711                 } else {
 712                     ++rbi;
 713                 }
 714             }
 715         } else if ( kind == LIGHTING_CAMERA ) {
 716             osg::ref_ptr<osg::Camera> mainShadowCamera = info->getCamera( SHADOW_CAMERA );
 717             if (mainShadowCamera.valid()) {
 718                 osg::Switch* grp = mainShadowCamera->getChild(0)->asSwitch();
 719                 for (int i = 0; i < 4; ++i ) {
 720                     if (!grp->getValue(i))
 721                         continue;
 722                     osg::TexGen* shadowTexGen = info->shadowTexGen[i];
 723                     shadowTexGen->setMode(osg::TexGen::EYE_LINEAR);
 724
 725                     osg::Camera* cascadeCam = static_cast<osg::Camera*>( grp->getChild(i) );
 726                     // compute the matrix which takes a vertex from view coords into tex coords
 727                     shadowTexGen->setPlanesFromMatrix(  cascadeCam->getProjectionMatrix() *
 728                                                         osg::Matrix::translate(1.0,1.0,1.0) *
 729                                                         osg::Matrix::scale(0.5f,0.5f,0.5f) );
 730
 731                     osg::RefMatrix * refMatrix = new osg::RefMatrix( cascadeCam->getInverseViewMatrix() * *cv->getModelViewMatrix() );
 732
 733                     cv->getRenderStage()->getPositionalStateContainer()->addPositionedTextureAttribute( i+1, refMatrix, shadowTexGen );
 734                 }
 735             }
 736             // Render saved transparent render bins
 737             osgUtil::RenderStage* renderStage = cv->getRenderStage();
 738             osgUtil::RenderBin::RenderBinList& rbl = renderStage->getRenderBinList();
 739             for (osgUtil::RenderBin::RenderBinList::iterator rbi = info->savedTransparentBins.begin(); rbi != info->savedTransparentBins.end(); ++rbi ){
 740                 rbl.insert( std::make_pair( rbi->first + 10000, rbi->second ) );
 741             }
 742             info->savedTransparentBins.clear();
 743         }
 744     }
 745
 746 private:
 747     std::string kind;
 748     CameraInfo* info;
 749     bool needsDuDv;
 750 };
 751
 752 osg::Texture2D* buildDeferredBuffer(GLint internalFormat, GLenum sourceFormat, GLenum sourceType, GLenum wrapMode, bool shadowComparison = false)
 753 {
 754     osg::Texture2D* tex = new osg::Texture2D;
 755     tex->setResizeNonPowerOfTwoHint( false );
 756     tex->setInternalFormat( internalFormat );
 757     tex->setShadowComparison(shadowComparison);
 758     if (shadowComparison) {
 759         tex->setShadowTextureMode(osg::Texture2D::LUMINANCE);
 760         tex->setBorderColor(osg::Vec4(1.0f,1.0f,1.0f,1.0f));
 761     }
 762     tex->setSourceFormat(sourceFormat);
 763     tex->setSourceType(sourceType);
 764     tex->setFilter( osg::Texture2D::MIN_FILTER, osg::Texture2D::LINEAR );
 765     tex->setFilter( osg::Texture2D::MAG_FILTER, osg::Texture2D::LINEAR );
 766     tex->setWrap( osg::Texture::WRAP_S, (osg::Texture::WrapMode)wrapMode );
 767     tex->setWrap( osg::Texture::WRAP_T, (osg::Texture::WrapMode)wrapMode );
 768         return tex;
 769 }
 770
 771 void attachBufferToCamera( CameraInfo* info, osg::Camera* camera, osg::Camera::BufferComponent c, const std::string& ck, const std::string& bk )
 772 {
 773     camera->attach( c, info->getBuffer(bk) );
 774     info->getRenderStageInfo(ck).buffers.insert( std::make_pair( c, bk ) );
 775 }
 776
 777 void buildAttachments(CameraInfo* info, osg::Camera* camera, const std::string& name, const std::vector<ref_ptr<FGRenderingPipeline::Attachment> > &attachments) {
 778     BOOST_FOREACH(ref_ptr<FGRenderingPipeline::Attachment> attachment, attachments) {
 779         if (attachment->valid())
 780             attachBufferToCamera( info, camera, attachment->component, name, attachment->buffer );
 781     }
 782 }
 783
 784 osg::Camera* FGRenderer::buildDeferredGeometryCamera( CameraInfo* info, osg::GraphicsContext* gc, const std::string& name, const std::vector<ref_ptr<FGRenderingPipeline::Attachment> > &attachments )
 785 {
 786     osg::Camera* camera = new osg::Camera;
 787     info->addCamera(name, camera );
 788
 789     camera->setCullMask( ~simgear::MODELLIGHT_BIT );
 790     camera->setName( "GeometryC" );
 791     camera->setGraphicsContext( gc );
 792     camera->setCullCallback( new FGDeferredRenderingCameraCullCallback( name, info ) );
 793     camera->setClearMask( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
 794     camera->setClearColor( osg::Vec4( 0., 0., 0., 0. ) );
 795     camera->setClearDepth( 1.0 );
 796     camera->setRenderTargetImplementation( osg::Camera::FRAME_BUFFER_OBJECT );
 797     camera->setRenderOrder(osg::Camera::NESTED_RENDER, 0);
 798     camera->setViewport( new osg::Viewport );
 799     buildAttachments(info, camera, name, attachments);
 800     camera->setDrawBuffer(GL_FRONT);
 801     camera->setReadBuffer(GL_FRONT);
 802
 803     osg::StateSet* ss = camera->getOrCreateStateSet();
 804     ss->addUniform( _depthInColor );
 805
 806     camera->addChild( mDeferredRealRoot.get() );
 807
 808     return camera;
 809 }
 810
 811 static void setShadowCascadeStateSet( osg::Camera* cam ) {
 812     osg::StateSet* ss = cam->getOrCreateStateSet();
 813     ss->setAttribute( new osg::PolygonOffset( 1.1f, 5.0f ), osg::StateAttribute::ON | osg::StateAttribute::OVERRIDE );
 814     ss->setMode( GL_POLYGON_OFFSET_FILL, osg::StateAttribute::ON | osg::StateAttribute::OVERRIDE );
 815     ss->setRenderBinDetails( 0, "RenderBin", osg::StateSet::OVERRIDE_RENDERBIN_DETAILS );
 816     ss->setAttributeAndModes( new osg::AlphaFunc( osg::AlphaFunc::GREATER, 0.05 ), osg::StateAttribute::ON | osg::StateAttribute::OVERRIDE );
 817     ss->setAttributeAndModes( new osg::ColorMask( false, false, false, false ), osg::StateAttribute::ON | osg::StateAttribute::OVERRIDE );
 818     ss->setAttributeAndModes( new osg::CullFace( osg::CullFace::FRONT ), osg::StateAttribute::ON | osg::StateAttribute::OVERRIDE );
 819     osg::Program* program = new osg::Program;
 820     ss->setAttribute( program, osg::StateAttribute::OVERRIDE | osg::StateAttribute::ON );
 821     ss->setMode( GL_LIGHTING, osg::StateAttribute::OVERRIDE | osg::StateAttribute::OFF );
 822     ss->setMode( GL_BLEND, osg::StateAttribute::OVERRIDE | osg::StateAttribute::OFF );
 823     //ss->setTextureMode( 0, GL_TEXTURE_2D, osg::StateAttribute::OVERRIDE | osg::StateAttribute::ON );
 824     ss->setTextureMode( 0, GL_TEXTURE_3D, osg::StateAttribute::OVERRIDE | osg::StateAttribute::OFF );
 825     ss->setTextureMode( 1, GL_TEXTURE_2D, osg::StateAttribute::OVERRIDE | osg::StateAttribute::OFF );
 826     ss->setTextureMode( 1, GL_TEXTURE_3D, osg::StateAttribute::OVERRIDE | osg::StateAttribute::OFF );
 827     ss->setTextureMode( 2, GL_TEXTURE_2D, osg::StateAttribute::OVERRIDE | osg::StateAttribute::OFF );
 828     ss->setTextureMode( 2, GL_TEXTURE_3D, osg::StateAttribute::OVERRIDE | osg::StateAttribute::OFF );
 829 }
 830
 831 static osg::Camera* createShadowCascadeCamera( int no, int cascadeSize ) {
 832     osg::Camera* cascadeCam = new osg::Camera;
 833     setShadowCascadeStateSet( cascadeCam );
 834
 835     std::ostringstream oss;
 836     oss << "CascadeCamera" << (no + 1);
 837     cascadeCam->setName( oss.str() );
 838     cascadeCam->setClearMask(0);
 839     cascadeCam->setCullMask(~( simgear::MODELLIGHT_BIT /* | simgear::NO_SHADOW_BIT */ ) );
 840     cascadeCam->setCullingMode( cascadeCam->getCullingMode() & ~osg::CullSettings::SMALL_FEATURE_CULLING );
 841     cascadeCam->setAllowEventFocus(false);
 842     cascadeCam->setReferenceFrame(osg::Transform::ABSOLUTE_RF_INHERIT_VIEWPOINT);
 843     cascadeCam->setRenderOrder(osg::Camera::NESTED_RENDER);
 844     cascadeCam->setComputeNearFarMode(osg::CullSettings::DO_NOT_COMPUTE_NEAR_FAR);
 845     cascadeCam->setViewport( int( no / 2 ) * cascadeSize, (no & 1) * cascadeSize, cascadeSize, cascadeSize );
 846     return cascadeCam;
 847 }
 848
 849 osg::Camera* FGRenderer::buildDeferredShadowCamera( CameraInfo* info, osg::GraphicsContext* gc, const std::string& name, const std::vector<ref_ptr<FGRenderingPipeline::Attachment> > &attachments )
 850 {
 851     osg::Camera* mainShadowCamera = new osg::Camera;
 852     info->addCamera(name, mainShadowCamera, 0.0f );
 853
 854     mainShadowCamera->setName( "ShadowC" );
 855     mainShadowCamera->setClearMask( GL_DEPTH_BUFFER_BIT );
 856     mainShadowCamera->setClearDepth( 1.0 );
 857     mainShadowCamera->setAllowEventFocus(false);
 858     mainShadowCamera->setGraphicsContext(gc);
 859     mainShadowCamera->setRenderTargetImplementation( osg::Camera::FRAME_BUFFER_OBJECT );
 860     buildAttachments(info, mainShadowCamera, name, attachments);
 861     mainShadowCamera->setComputeNearFarMode(osg::Camera::DO_NOT_COMPUTE_NEAR_FAR);
 862     mainShadowCamera->setReferenceFrame(osg::Transform::ABSOLUTE_RF);
 863     mainShadowCamera->setProjectionMatrix(osg::Matrix::identity());
 864     mainShadowCamera->setCullingMode( osg::CullSettings::NO_CULLING );
 865     mainShadowCamera->setViewport( 0, 0, _shadowMapSize, _shadowMapSize );
 866     mainShadowCamera->setDrawBuffer(GL_FRONT);
 867     mainShadowCamera->setReadBuffer(GL_FRONT);
 868     mainShadowCamera->setRenderOrder(Camera::NESTED_RENDER, 1);
 869
 870     osg::Switch* shadowSwitch = new osg::Switch;
 871     mainShadowCamera->addChild( shadowSwitch );
 872
 873     for (int i = 0; i < 4; ++i ) {
 874         osg::Camera* cascadeCam = createShadowCascadeCamera( i, _shadowMapSize/2 );
 875         cascadeCam->addChild( mDeferredRealRoot.get() );
 876         shadowSwitch->addChild( cascadeCam );
 877         info->shadowTexGen[i] = new osg::TexGen;
 878     }
 879     if (fgGetBool("/sim/rendering/shadows/enabled", true))
 880         shadowSwitch->setAllChildrenOn();
 881     else
 882         shadowSwitch->setAllChildrenOff();
 883
 884     return mainShadowCamera;
 885 }
 886
 887 void FGRenderer::updateShadowCascade(const CameraInfo* info, osg::Camera* camera, osg::Group* grp, int idx, double left, double right, double bottom, double top, double zNear, double f1, double f2)
 888 {
 889     osg::Camera* cascade = static_cast<osg::Camera*>( grp->getChild(idx) );
 890     osg::Matrixd &viewMatrix = cascade->getViewMatrix();
 891     osg::Matrixd &projectionMatrix = cascade->getProjectionMatrix();
 892
 893     osg::BoundingSphere bs;
 894     bs.expandBy(osg::Vec3(left,bottom,-zNear) * f1);
 895     bs.expandBy(osg::Vec3(right,top,-zNear) * f2);
 896     bs.expandBy(osg::Vec3(left,bottom,-zNear) * f2);
 897     bs.expandBy(osg::Vec3(right,top,-zNear) * f1);
 898
 899     osg::Vec4 aim = osg::Vec4(bs.center(), 1.0) * camera->getInverseViewMatrix();
 900
 901     projectionMatrix.makeOrtho( -bs.radius(), bs.radius(), -bs.radius(), bs.radius(), 1., 15000.0 );
 902     osg::Vec3 position( aim.x(), aim.y(), aim.z() );
 903     viewMatrix.makeLookAt( position + (getSunDirection() * 10000.0), position, position );
 904 }
 905
 906 osg::Vec3 FGRenderer::getSunDirection() const
 907 {
 908     osg::Vec3 val;
 909     _sunDirection->get( val );
 910     return val;
 911 }
 912
 913 void FGRenderer::updateShadowCamera(const CameraInfo* info, const osg::Vec3d& position)
 914 {
 915     ref_ptr<Camera> mainShadowCamera = info->getCamera( SHADOW_CAMERA );
 916     if (mainShadowCamera.valid()) {
 917         ref_ptr<Switch> shadowSwitch = mainShadowCamera->getChild( 0 )->asSwitch();
 918         osg::Vec3d up = position,
 919             dir = getSunDirection();
 920         up.normalize();
 921         dir.normalize();
 922         // cos(100 deg) == -0.17
 923         if (up * dir < -0.17 || !fgGetBool("/sim/rendering/shadows/enabled", true)) {
 924             shadowSwitch->setAllChildrenOff();
 925         } else {
 926             double left,right,bottom,top,zNear,zFar;
 927             ref_ptr<Camera> camera = info->getCamera(GEOMETRY_CAMERA);
 928             camera->getProjectionMatrix().getFrustum(left,right,bottom,top,zNear,zFar);
 929
 930             shadowSwitch->setAllChildrenOn();
 931             if (_numCascades == 1) {
 932                 osg::Camera* cascadeCam = static_cast<osg::Camera*>( shadowSwitch->getChild(0) );
 933                 cascadeCam->setViewport( 0, 0, _shadowMapSize, _shadowMapSize );
 934             } else {
 935                 for (int no = 0; no < 4; ++no) {
 936                     osg::Camera* cascadeCam = static_cast<osg::Camera*>( shadowSwitch->getChild(no) );
 937                     cascadeCam->setViewport( int( no / 2 ) * (_shadowMapSize/2), (no & 1) * (_shadowMapSize/2), (_shadowMapSize/2), (_shadowMapSize/2) );
 938                 }
 939             }
 940             updateShadowCascade(info, camera, shadowSwitch, 0, left, right, bottom, top, zNear, 1.0, _cascadeFar[0]/zNear);
 941             if (_numCascades > 1) {
 942                 shadowSwitch->setValue(1, true);
 943                 updateShadowCascade(info, camera, shadowSwitch, 1, left, right, bottom, top, zNear, _cascadeFar[0]/zNear, _cascadeFar[1]/zNear);
 944             } else {
 945                 shadowSwitch->setValue(1, false);
 946             }
 947             if (_numCascades > 2) {
 948                 shadowSwitch->setValue(2, true);
 949                 updateShadowCascade(info, camera, shadowSwitch, 2, left, right, bottom, top, zNear, _cascadeFar[1]/zNear, _cascadeFar[2]/zNear);
 950             } else {
 951                 shadowSwitch->setValue(2, false);
 952             }
 953             if (_numCascades > 3) {
 954                 shadowSwitch->setValue(3, true);
 955                 updateShadowCascade(info, camera, shadowSwitch, 3, left, right, bottom, top, zNear, _cascadeFar[2]/zNear, _cascadeFar[3]/zNear);
 956             } else {
 957                 shadowSwitch->setValue(3, false);
 958             }
 959             {
 960             osg::Matrixd &viewMatrix = mainShadowCamera->getViewMatrix();
 961
 962             osg::Vec4 aim = osg::Vec4( 0.0, 0.0, 0.0, 1.0 ) * camera->getInverseViewMatrix();
 963
 964             osg::Vec3 position( aim.x(), aim.y(), aim.z() );
 965             viewMatrix.makeLookAt( position, position + (getSunDirection() * 10000.0), position );
 966             }
 967         }
 968     }
 969 }
 970
 971 void FGRenderer::updateShadowMapSize(int mapSize)
 972 {
 973     if ( ((~( mapSize-1 )) & mapSize) != mapSize ) {
 974         SG_LOG( SG_VIEW, SG_ALERT, "Map size is not a power of two" );
 975         return;
 976     }
 977     for (   CameraGroup::CameraIterator ii = CameraGroup::getDefault()->camerasBegin();
 978             ii != CameraGroup::getDefault()->camerasEnd();
 979             ++ii )
 980     {
 981         CameraInfo* info = ii->get();
 982         Camera* camera = info->getCamera(SHADOW_CAMERA);
 983         if (camera == 0) continue;
 984
 985         Texture2D* tex = info->getBuffer("shadow");
 986         if (tex == 0) continue;
 987
 988         tex->setTextureSize( mapSize, mapSize );
 989         tex->dirtyTextureObject();
 990
 991         Viewport* vp = camera->getViewport();
 992         vp->width() = mapSize;
 993         vp->height() = mapSize;
 994
 995         osgViewer::Renderer* renderer
 996             = static_cast<osgViewer::Renderer*>(camera->getRenderer());
 997         for (int i = 0; i < 2; ++i) {
 998             osgUtil::SceneView* sceneView = renderer->getSceneView(i);
 999             sceneView->getRenderStage()->setFrameBufferObject(0);
1000             sceneView->getRenderStage()->setCameraRequiresSetUp(true);
1001             if (sceneView->getRenderStageLeft()) {
1002                 sceneView->getRenderStageLeft()->setFrameBufferObject(0);
1003                 sceneView->getRenderStageLeft()->setCameraRequiresSetUp(true);
1004             }
1005             if (sceneView->getRenderStageRight()) {
1006                 sceneView->getRenderStageRight()->setFrameBufferObject(0);
1007                 sceneView->getRenderStageRight()->setCameraRequiresSetUp(true);
1008             }
1009         }
1010
1011         int cascadeSize = mapSize / 2;
1012         Group* grp = camera->getChild(0)->asGroup();
1013         for (int i = 0; i < 4; ++i ) {
1014             Camera* cascadeCam = static_cast<Camera*>( grp->getChild(i) );
1015             cascadeCam->setViewport( int( i / 2 ) * cascadeSize, (i & 1) * cascadeSize, cascadeSize, cascadeSize );
1016         }
1017
1018         _shadowMapSize = mapSize;
1019     }
1020 }
1021
1022 void FGRenderer::enableShadows(bool enabled)
1023 {
1024     for (   CameraGroup::CameraIterator ii = CameraGroup::getDefault()->camerasBegin();
1025             ii != CameraGroup::getDefault()->camerasEnd();
1026             ++ii )
1027     {
1028         CameraInfo* info = ii->get();
1029         Camera* camera = info->getCamera(SHADOW_CAMERA);
1030         if (camera == 0) continue;
1031
1032         osg::Switch* shadowSwitch = camera->getChild(0)->asSwitch();
1033         if (enabled)
1034             shadowSwitch->setAllChildrenOn();
1035         else
1036             shadowSwitch->setAllChildrenOff();
1037     }
1038 }
1039
1040 void FGRenderer::updateCascadeFar(int index, float far_m)
1041 {
1042     if (index < 0 || index > 3)
1043         return;
1044     _cascadeFar[index] = far_m;
1045     _shadowDistances->set( osg::Vec4f(_cascadeFar[0], _cascadeFar[1], _cascadeFar[2], _cascadeFar[3]) );
1046 }
1047
1048 void FGRenderer::updateCascadeNumber(size_t num)
1049 {
1050     if (num < 1 || num > 4)
1051         return;
1052     _numCascades = num;
1053     _shadowNumber->set( (int)_numCascades );
1054 }
1055
1056 osg::Camera* FGRenderer::buildDeferredLightingCamera( CameraInfo* info, osg::GraphicsContext* gc, const std::string& name, const std::vector<ref_ptr<FGRenderingPipeline::Attachment> > &attachments )
1057 {
1058     osg::Camera* camera = new osg::Camera;
1059     info->addCamera(name, camera );
1060
1061     camera->setCullCallback( new FGDeferredRenderingCameraCullCallback( name, info ) );
1062     camera->setAllowEventFocus(false);
1063     camera->setGraphicsContext(gc);
1064     camera->setViewport(new Viewport);
1065     camera->setName("LightingC");
1066     camera->setReferenceFrame(osg::Transform::ABSOLUTE_RF);
1067     camera->setRenderOrder(osg::Camera::NESTED_RENDER, 50);
1068     camera->setRenderTargetImplementation( osg::Camera::FRAME_BUFFER_OBJECT );
1069     camera->setViewport( new osg::Viewport );
1070     buildAttachments(info, camera, name, attachments);
1071     camera->setDrawBuffer(GL_FRONT);
1072     camera->setReadBuffer(GL_FRONT);
1073     camera->setClearColor( osg::Vec4( 0., 0., 0., 1. ) );
1074     camera->setClearMask( GL_COLOR_BUFFER_BIT );
1075     osg::StateSet* ss = camera->getOrCreateStateSet();
1076     ss->setAttribute( new osg::Depth(osg::Depth::LESS, 0.0, 1.0, false) );
1077     ss->addUniform( _depthInColor );
1078
1079     osg::Group* lightingGroup = new osg::Group;
1080
1081     osg::Camera* quadCam1 = new osg::Camera;
1082     quadCam1->setName( "QuadCamera1" );
1083     quadCam1->setClearMask(0);
1084     quadCam1->setAllowEventFocus(false);
1085     quadCam1->setReferenceFrame(osg::Transform::ABSOLUTE_RF);
1086     quadCam1->setRenderOrder(osg::Camera::NESTED_RENDER);
1087     quadCam1->setViewMatrix(osg::Matrix::identity());
1088     quadCam1->setProjectionMatrixAsOrtho2D(-1,1,-1,1);
1089     quadCam1->setComputeNearFarMode(osg::CullSettings::DO_NOT_COMPUTE_NEAR_FAR);
1090     ss = quadCam1->getOrCreateStateSet();
1091     ss->addUniform( _ambientFactor );
1092     ss->addUniform( info->projInverse );
1093     ss->addUniform( info->viewInverse );
1094     ss->addUniform( info->view );
1095     ss->addUniform( _sunDiffuse );
1096     ss->addUniform( _sunSpecular );
1097     ss->addUniform( _sunDirection );
1098     ss->addUniform( _planes );
1099     ss->addUniform( _shadowNumber );
1100     ss->addUniform( _shadowDistances );
1101
1102     osg::Geometry* g = osg::createTexturedQuadGeometry( osg::Vec3(-1.,-1.,0.), osg::Vec3(2.,0.,0.), osg::Vec3(0.,2.,0.) );
1103     g->setUseDisplayList(false);
1104     simgear::EffectGeode* eg = new simgear::EffectGeode;
1105     simgear::Effect* effect = simgear::makeEffect("Effects/ambient", true);
1106     if (!effect) {
1107         SG_LOG(SG_VIEW, SG_ALERT, "Effects/ambient not found");
1108         return 0;
1109     }
1110     eg->setEffect( effect );
1111     g->setName( "AmbientQuad" );
1112     eg->setName("AmbientQuad");
1113     eg->setCullingActive(false);
1114     eg->addDrawable(g);
1115     quadCam1->addChild( eg );
1116
1117     g = osg::createTexturedQuadGeometry( osg::Vec3(-1.,-1.,0.), osg::Vec3(2.,0.,0.), osg::Vec3(0.,2.,0.) );
1118     g->setUseDisplayList(false);
1119     g->setName( "SunlightQuad" );
1120     eg = new simgear::EffectGeode;
1121     effect = simgear::makeEffect("Effects/sunlight", true);
1122     if (!effect) {
1123         SG_LOG(SG_VIEW, SG_ALERT, "Effects/sunlight not found");
1124         return 0;
1125     }
1126     eg->setEffect( effect );
1127     eg->setName("SunlightQuad");
1128     eg->setCullingActive(false);
1129     eg->addDrawable(g);
1130     quadCam1->addChild( eg );
1131
1132     osg::Camera* lightCam = new osg::Camera;
1133     ss = lightCam->getOrCreateStateSet();
1134     ss->addUniform( _planes );
1135     ss->addUniform( info->bufferSize );
1136     lightCam->setName( "LightCamera" );
1137     lightCam->setClearMask(0);
1138     lightCam->setAllowEventFocus(false);
1139     lightCam->setReferenceFrame(osg::Transform::RELATIVE_RF);
1140     lightCam->setRenderOrder(osg::Camera::NESTED_RENDER,1);
1141     lightCam->setViewMatrix(osg::Matrix::identity());
1142     lightCam->setProjectionMatrix(osg::Matrix::identity());
1143     lightCam->setComputeNearFarMode(osg::CullSettings::DO_NOT_COMPUTE_NEAR_FAR);
1144     lightCam->setCullMask( simgear::MODELLIGHT_BIT );
1145     lightCam->setInheritanceMask( osg::CullSettings::ALL_VARIABLES & ~osg::CullSettings::CULL_MASK );
1146     lightCam->addChild( mDeferredRealRoot.get() );
1147
1148
1149     osg::Camera* quadCam2 = new osg::Camera;
1150     quadCam2->setName( "QuadCamera1" );
1151     quadCam2->setClearMask(0);
1152     quadCam2->setAllowEventFocus(false);
1153     quadCam2->setReferenceFrame(osg::Transform::ABSOLUTE_RF);
1154     quadCam2->setRenderOrder(osg::Camera::NESTED_RENDER,2);
1155     quadCam2->setViewMatrix(osg::Matrix::identity());
1156     quadCam2->setProjectionMatrixAsOrtho2D(-1,1,-1,1);
1157     quadCam2->setComputeNearFarMode(osg::CullSettings::DO_NOT_COMPUTE_NEAR_FAR);
1158     ss = quadCam2->getOrCreateStateSet();
1159     ss->addUniform( _ambientFactor );
1160     ss->addUniform( info->projInverse );
1161     ss->addUniform( info->viewInverse );
1162     ss->addUniform( info->view );
1163     ss->addUniform( _sunDiffuse );
1164     ss->addUniform( _sunSpecular );
1165     ss->addUniform( _sunDirection );
1166     ss->addUniform( _fogColor );
1167     ss->addUniform( _fogDensity );
1168     ss->addUniform( _planes );
1169
1170     g = osg::createTexturedQuadGeometry( osg::Vec3(-1.,-1.,0.), osg::Vec3(2.,0.,0.), osg::Vec3(0.,2.,0.) );
1171     g->setUseDisplayList(false);
1172     g->setName( "FogQuad" );
1173     eg = new simgear::EffectGeode;
1174     effect = simgear::makeEffect("Effects/fog", true);
1175     if (!effect) {
1176         SG_LOG(SG_VIEW, SG_ALERT, "Effects/fog not found");
1177         return 0;
1178     }
1179     eg->setEffect( effect );
1180     eg->setName("FogQuad");
1181     eg->setCullingActive(false);
1182     eg->addDrawable(g);
1183     quadCam2->addChild( eg );
1184
1185     lightingGroup->addChild( _sky->getPreRoot() );
1186     lightingGroup->addChild( _sky->getCloudRoot() );
1187     lightingGroup->addChild( quadCam1 );
1188     lightingGroup->addChild( lightCam );
1189     lightingGroup->addChild( quadCam2 );
1190
1191     camera->addChild( lightingGroup );
1192
1193     return camera;
1194 }
1195
1196 osg::Camera*
1197 FGRenderer::buildDeferredLightingCamera( flightgear::CameraInfo* info, osg::GraphicsContext* gc, const FGRenderingPipeline::Stage* stage )
1198 {
1199     osg::Camera* camera = new osg::Camera;
1200     info->addCamera(stage->name, camera );
1201
1202     camera->setCullCallback( new FGDeferredRenderingCameraCullCallback( stage->name, info ) );
1203     camera->setAllowEventFocus(false);
1204     camera->setGraphicsContext(gc);
1205     camera->setViewport(new Viewport);
1206     camera->setName(stage->name+"C");
1207     camera->setReferenceFrame(osg::Transform::ABSOLUTE_RF);
1208     camera->setRenderOrder(osg::Camera::NESTED_RENDER, stage->orderNum);
1209     camera->setRenderTargetImplementation( osg::Camera::FRAME_BUFFER_OBJECT );
1210     camera->setViewport( new osg::Viewport );
1211     buildAttachments(info, camera, stage->name, stage->attachments);
1212     camera->setDrawBuffer(GL_FRONT);
1213     camera->setReadBuffer(GL_FRONT);
1214     camera->setClearColor( osg::Vec4( 0., 0., 0., 1. ) );
1215     camera->setClearMask( GL_COLOR_BUFFER_BIT );
1216     osg::StateSet* ss = camera->getOrCreateStateSet();
1217     ss->setAttribute( new osg::Depth(osg::Depth::LESS, 0.0, 1.0, false) );
1218     ss->addUniform( _depthInColor );
1219
1220     osg::Group* lightingGroup = new osg::Group;
1221
1222     BOOST_FOREACH( osg::ref_ptr<FGRenderingPipeline::Pass> pass, stage->passes ) {
1223         ref_ptr<Node> node = buildPass(info, pass);
1224         if (node.valid())
1225             lightingGroup->addChild(node);
1226     }
1227
1228     camera->addChild( lightingGroup );
1229
1230     return camera;
1231 }
1232
1233 CameraInfo*
1234 FGRenderer::buildDeferredPipeline(CameraGroup* cgroup, unsigned flags, osg::Camera* camera,
1235                                     const osg::Matrix& view,
1236                                     const osg::Matrix& projection,
1237                                     osg::GraphicsContext* gc)
1238 {
1239     return buildCameraFromRenderingPipeline(_pipeline, cgroup, flags, camera, view, projection, gc);
1240 }
1241
1242 osg::Camera*
1243 FGRenderer::buildDeferredFullscreenCamera( flightgear::CameraInfo* info, const FGRenderingPipeline::Pass* pass )
1244 {
1245     osg::Camera* camera = new osg::Camera;
1246
1247     camera->setClearMask( 0 );
1248     camera->setAllowEventFocus(false);
1249     camera->setName(pass->name+"C");
1250     camera->setReferenceFrame(osg::Transform::ABSOLUTE_RF);
1251     camera->setRenderOrder(osg::Camera::NESTED_RENDER, pass->orderNum);
1252     camera->setComputeNearFarMode(osg::CullSettings::DO_NOT_COMPUTE_NEAR_FAR);
1253     camera->setViewMatrix(osg::Matrix::identity());
1254     camera->setProjectionMatrixAsOrtho2D(-1,1,-1,1);
1255
1256     osg::StateSet* ss = camera->getOrCreateStateSet();
1257     ss->setMode(GL_DEPTH_TEST, osg::StateAttribute::OFF);
1258     ss->addUniform( info->projInverse );
1259     ss->addUniform( info->viewInverse );
1260     ss->addUniform( info->view );
1261     ss->addUniform( info->bufferSize );
1262     ss->addUniform( _ambientFactor );
1263     ss->addUniform( _sunDiffuse );
1264     ss->addUniform( _sunSpecular );
1265     ss->addUniform( _sunDirection );
1266     ss->addUniform( _planes );
1267     ss->addUniform( _shadowNumber );
1268     ss->addUniform( _shadowDistances );
1269     ss->addUniform( _fogColor );
1270     ss->addUniform( _fogDensity );
1271     ss->addUniform( _planes );
1272
1273     osg::Geometry* g = osg::createTexturedQuadGeometry( osg::Vec3(-1.,-1.,0.), osg::Vec3(2.,0.,0.), osg::Vec3(0.,2.,0.) );
1274     g->setUseDisplayList(false);
1275     simgear::EffectGeode* eg = new simgear::EffectGeode;
1276     simgear::Effect* effect = simgear::makeEffect(pass->effect, true);
1277     if (effect) {
1278         eg->setEffect( effect );
1279     }
1280
1281     eg->setName(pass->name+"Quad");
1282     eg->setCullingActive(false);
1283     eg->addDrawable(g);
1284     camera->addChild(eg);
1285
1286     return camera;
1287 }
1288
1289 osg::Camera*
1290 FGRenderer::buildDeferredFullscreenCamera( flightgear::CameraInfo* info, osg::GraphicsContext* gc, const FGRenderingPipeline::Stage* stage )
1291 {
1292     osg::Camera* camera = buildDeferredFullscreenCamera(info, static_cast<const FGRenderingPipeline::Pass*>(stage));
1293     info->addCamera(stage->name, camera, stage->scaleFactor, true);
1294
1295     camera->setCullCallback( new FGDeferredRenderingCameraCullCallback(stage->name, info, stage->needsDuDv) );
1296     camera->setGraphicsContext(gc);
1297     camera->setViewport(new Viewport);
1298     camera->setRenderTargetImplementation( osg::Camera::FRAME_BUFFER_OBJECT );
1299     buildAttachments(info, camera, stage->name, stage->attachments);
1300     camera->setDrawBuffer(GL_FRONT);
1301     camera->setReadBuffer(GL_FRONT);
1302     camera->setClearColor( osg::Vec4( 1., 1., 1., 1. ) );
1303     camera->setClearMask( GL_COLOR_BUFFER_BIT );
1304     camera->setViewMatrix(osg::Matrix::identity());
1305     camera->setProjectionMatrixAsOrtho2D(-1,1,-1,1);
1306
1307     osg::StateSet* ss = camera->getOrCreateStateSet();
1308     if (stage->needsDuDv) {
1309         ss->addUniform( info->du );
1310         ss->addUniform( info->dv );
1311     }
1312
1313     return camera;
1314 }
1315
1316 void
1317 FGRenderer::buildDeferredDisplayCamera( osg::Camera* camera, flightgear::CameraInfo* info, const std::string& name, osg::GraphicsContext* gc )
1318 {
1319     camera->setName( "DisplayC" );
1320     camera->setCullCallback( new FGDeferredRenderingCameraCullCallback( name, info ) );
1321     camera->setReferenceFrame(Transform::ABSOLUTE_RF);
1322     camera->setAllowEventFocus(false);
1323     osg::Geometry* g = osg::createTexturedQuadGeometry( osg::Vec3(-1.,-1.,0.), osg::Vec3(2.,0.,0.), osg::Vec3(0.,2.,0.) );
1324     g->setUseDisplayList(false); //DEBUG
1325     simgear::EffectGeode* eg = new simgear::EffectGeode;
1326     simgear::Effect* effect = simgear::makeEffect("Effects/display", true);
1327     if (!effect) {
1328         SG_LOG(SG_VIEW, SG_ALERT, "Effects/display not found");
1329         return;
1330     }
1331     eg->setEffect(effect);
1332     eg->setCullingActive(false);
1333     eg->addDrawable(g);
1334     camera->setViewMatrix(osg::Matrix::identity());
1335     camera->setProjectionMatrixAsOrtho2D(-1,1,-1,1);
1336     camera->addChild(eg);
1337
1338     osg::StateSet* ss = camera->getOrCreateStateSet();
1339     ss->addUniform( _depthInColor );
1340 }
1341
1342 void
1343 FGRenderer::buildStage(CameraInfo* info,
1344                         FGRenderingPipeline::Stage* stage,
1345                         CameraGroup* cgroup,
1346                         osg::Camera* mainCamera,
1347                         osg::GraphicsContext* gc)
1348 {
1349     if (!stage->valid())
1350         return;
1351
1352     ref_ptr<Camera> camera;
1353     if (stage->type == "geometry")
1354         camera = buildDeferredGeometryCamera(info, gc, stage->name, stage->attachments);
1355     else if (stage->type == "lighting-builtin")
1356         camera = buildDeferredLightingCamera(info, gc, stage->name, stage->attachments);
1357     else if (stage->type == "lighting")
1358         camera = buildDeferredLightingCamera(info, gc, stage);
1359     else if (stage->type == "shadow")
1360         camera = buildDeferredShadowCamera(info, gc, stage->name, stage->attachments);
1361     else if (stage->type == "fullscreen")
1362         camera = buildDeferredFullscreenCamera(info, gc, stage);
1363     else if (stage->type == "display") {
1364         camera = mainCamera;
1365         buildDeferredDisplayCamera(camera, info, stage->name, gc);
1366     } else
1367         throw sg_exception("Stage type is not supported");
1368
1369     cgroup->getViewer()->addSlave(camera, false);
1370     installCullVisitor(camera);
1371     int slaveIndex = cgroup->getViewer()->getNumSlaves() - 1;
1372     if (stage->type == "display")
1373         info->addCamera( stage->type, camera, slaveIndex, true );
1374     info->getRenderStageInfo(stage->name).slaveIndex = slaveIndex;
1375 }
1376
1377 osg::Node*
1378 FGRenderer::buildLightingSkyCloudsPass(FGRenderingPipeline::Pass* pass)
1379 {
1380     Group* group = new Group;
1381     group->addChild( _sky->getPreRoot() );
1382     group->addChild( _sky->getCloudRoot() );
1383     return group;
1384 }
1385
1386 osg::Node*
1387 FGRenderer::buildLightingLightsPass(CameraInfo* info, FGRenderingPipeline::Pass* pass)
1388 {
1389     osg::Camera* lightCam = new osg::Camera;
1390     StateSet* ss = lightCam->getOrCreateStateSet();
1391     ss->addUniform( _planes );
1392     ss->addUniform( info->bufferSize );
1393     lightCam->setName( "LightCamera" );
1394     lightCam->setClearMask(0);
1395     lightCam->setAllowEventFocus(false);
1396     lightCam->setReferenceFrame(osg::Transform::RELATIVE_RF);
1397     lightCam->setRenderOrder(osg::Camera::NESTED_RENDER,pass->orderNum);
1398     lightCam->setViewMatrix(osg::Matrix::identity());
1399     lightCam->setProjectionMatrix(osg::Matrix::identity());
1400     lightCam->setComputeNearFarMode(osg::CullSettings::DO_NOT_COMPUTE_NEAR_FAR);
1401     lightCam->setCullMask( simgear::MODELLIGHT_BIT );
1402     lightCam->setInheritanceMask( osg::CullSettings::ALL_VARIABLES & ~osg::CullSettings::CULL_MASK );
1403     lightCam->addChild( mDeferredRealRoot.get() );
1404
1405     return lightCam;
1406 }
1407
1408 osg::Node*
1409 FGRenderer::buildPass(CameraInfo* info, FGRenderingPipeline::Pass* pass)
1410 {
1411     if (!pass->valid())
1412         return 0;
1413
1414     ref_ptr<Node> node;
1415     if (pass->type == "sky-clouds")
1416         node = buildLightingSkyCloudsPass(pass);
1417     else if (pass->type == "fullscreen")
1418         node = buildDeferredFullscreenCamera(info, pass);
1419     else if (pass->type == "lights")
1420         node = buildLightingLightsPass(info, pass);
1421     else
1422         throw sg_exception("Pass type is not supported");
1423
1424     return node.release();
1425 }
1426
1427 void
1428 FGRenderer::buildBuffers(FGRenderingPipeline* rpipe, CameraInfo* info)
1429 {
1430     for (size_t i = 0; i < rpipe->buffers.size(); ++i) {
1431         osg::ref_ptr<FGRenderingPipeline::Buffer> buffer = rpipe->buffers[i];
1432         if (buffer->valid()) {
1433             bool fullscreen = buffer->width == -1 && buffer->height == -1;
1434             info->addBuffer(buffer->name, buildDeferredBuffer( buffer->internalFormat,
1435                                                                 buffer->sourceFormat,
1436                                                                 buffer->sourceType,
1437                                                                 buffer->wrapMode,
1438                                                                 buffer->shadowComparison),
1439                             fullscreen ? buffer->scaleFactor : 0.0f);
1440             if (!fullscreen) {
1441                 info->getBuffer(buffer->name)->setTextureSize(buffer->width, buffer->height);
1442             }
1443         }
1444     }
1445 }
1446
1447 CameraInfo* FGRenderer::buildCameraFromRenderingPipeline(FGRenderingPipeline* rpipe, CameraGroup* cgroup, unsigned flags, osg::Camera* camera,
1448                                     const osg::Matrix& view, const osg::Matrix& projection, osg::GraphicsContext* gc)
1449 {
1450     CameraInfo* info = new CameraInfo(flags);
1451     buildBuffers(rpipe, info);
1452
1453     for (size_t i = 0; i < rpipe->stages.size(); ++i) {
1454         osg::ref_ptr<FGRenderingPipeline::Stage> stage = rpipe->stages[i];
1455         buildStage(info, stage, cgroup, camera, gc);
1456     }
1457
1458     cgroup->addCamera(info);
1459
1460     return info;
1461 }
1462
1463 void
1464 FGRenderer::setupView( void )
1465 {
1466     osgViewer::Viewer* viewer = globals->get_renderer()->getViewer();
1467     osg::initNotifyLevel();
1468
1469     // The number of polygon-offset "units" to place between layers.  In
1470     // principle, one is supposed to be enough.  In practice, I find that
1471     // my hardware/driver requires many more.
1472     osg::PolygonOffset::setUnitsMultiplier(1);
1473     osg::PolygonOffset::setFactorMultiplier(1);
1474
1475     // Go full screen if requested ...
1476     if ( fgGetBool("/sim/startup/fullscreen") )
1477         fgOSFullScreen();
1478
1479 // build the sky
1480     // The sun and moon diameters are scaled down numbers of the
1481     // actual diameters. This was needed to fit both the sun and the
1482     // moon within the distance to the far clip plane.
1483     // Moon diameter:    3,476 kilometers
1484     // Sun diameter: 1,390,000 kilometers
1485     _sky->build( 80000.0, 80000.0,
1486                   463.3, 361.8,
1487                   *globals->get_ephem(),
1488                   fgGetNode("/environment", true));
1489
1490     viewer->getCamera()
1491         ->setComputeNearFarMode(osg::CullSettings::DO_NOT_COMPUTE_NEAR_FAR);
1492
1493     osg::StateSet* stateSet = mRoot->getOrCreateStateSet();
1494
1495     stateSet->setMode(GL_LIGHTING, osg::StateAttribute::OFF);
1496
1497     stateSet->setAttribute(new osg::Depth(osg::Depth::LESS));
1498     stateSet->setMode(GL_DEPTH_TEST, osg::StateAttribute::OFF);
1499
1500     stateSet->setAttribute(new osg::AlphaFunc(osg::AlphaFunc::GREATER, 0.01));
1501     stateSet->setMode(GL_ALPHA_TEST, osg::StateAttribute::OFF);
1502     stateSet->setAttribute(new osg::BlendFunc);
1503     stateSet->setMode(GL_BLEND, osg::StateAttribute::OFF);
1504
1505     stateSet->setMode(GL_FOG, osg::StateAttribute::OFF);
1506
1507     // this will be set below
1508     stateSet->setMode(GL_NORMALIZE, osg::StateAttribute::OFF);
1509
1510     osg::Material* material = new osg::Material;
1511     stateSet->setAttribute(material);
1512
1513     stateSet->setTextureAttribute(0, new osg::TexEnv);
1514     stateSet->setTextureMode(0, GL_TEXTURE_2D, osg::StateAttribute::OFF);
1515
1516     osg::Hint* hint = new osg::Hint(GL_FOG_HINT, GL_DONT_CARE);
1517     hint->setUpdateCallback(new FGHintUpdateCallback("/sim/rendering/fog"));
1518     stateSet->setAttribute(hint);
1519     hint = new osg::Hint(GL_POLYGON_SMOOTH_HINT, GL_DONT_CARE);
1520     hint->setUpdateCallback(new FGHintUpdateCallback("/sim/rendering/polygon-smooth"));
1521     stateSet->setAttribute(hint);
1522     hint = new osg::Hint(GL_LINE_SMOOTH_HINT, GL_DONT_CARE);
1523     hint->setUpdateCallback(new FGHintUpdateCallback("/sim/rendering/line-smooth"));
1524     stateSet->setAttribute(hint);
1525     hint = new osg::Hint(GL_POINT_SMOOTH_HINT, GL_DONT_CARE);
1526     hint->setUpdateCallback(new FGHintUpdateCallback("/sim/rendering/point-smooth"));
1527     stateSet->setAttribute(hint);
1528     hint = new osg::Hint(GL_PERSPECTIVE_CORRECTION_HINT, GL_DONT_CARE);
1529     hint->setUpdateCallback(new FGHintUpdateCallback("/sim/rendering/perspective-correction"));
1530     stateSet->setAttribute(hint);
1531
1532     osg::Group* sceneGroup = new osg::Group;
1533     sceneGroup->addChild(globals->get_scenery()->get_scene_graph());
1534     sceneGroup->setNodeMask(~simgear::BACKGROUND_BIT);
1535
1536     //sceneGroup->addChild(thesky->getCloudRoot());
1537
1538     stateSet = sceneGroup->getOrCreateStateSet();
1539     stateSet->setMode(GL_DEPTH_TEST, osg::StateAttribute::ON);
1540
1541     // need to update the light on every frame
1542     // OSG LightSource objects are rather confusing. OSG only supports
1543     // the 10 lights specified by OpenGL itself; if more than one
1544     // LightSource in the scene graph have the same light number, it's
1545     // indeterminate which values will be used to render geometry that
1546     // has that light number enabled. Also, adding children to a
1547     // LightSource is just a shortcut for setting up a state set that
1548     // has the corresponding OpenGL light enabled: a LightSource will
1549     // affect geometry anywhere in the scene graph that has its light
1550     // number enabled in a state set.
1551     LightSource* lightSource = new LightSource;
1552     lightSource->getLight()->setDataVariance(Object::DYNAMIC);
1553     // relative because of CameraView being just a clever transform node
1554     lightSource->setReferenceFrame(osg::LightSource::RELATIVE_RF);
1555     lightSource->setLocalStateSetModes(osg::StateAttribute::ON);
1556     lightSource->setUpdateCallback(new FGLightSourceUpdateCallback);
1557     mRealRoot->addChild(lightSource);
1558     // we need a white diffuse light for the phase of the moon
1559     osg::LightSource* sunLight = new osg::LightSource;
1560     sunLight->getLight()->setDataVariance(Object::DYNAMIC);
1561     sunLight->getLight()->setLightNum(1);
1562     sunLight->setUpdateCallback(new FGLightSourceUpdateCallback(true));
1563     sunLight->setReferenceFrame(osg::LightSource::RELATIVE_RF);
1564     sunLight->setLocalStateSetModes(osg::StateAttribute::ON);
1565
1566     // Hang a StateSet above the sky subgraph in order to turn off
1567     // light 0
1568     Group* skyGroup = new Group;
1569     StateSet* skySS = skyGroup->getOrCreateStateSet();
1570     skySS->setMode(GL_LIGHT0, StateAttribute::OFF);
1571     skyGroup->addChild(_sky->getPreRoot());
1572     sunLight->addChild(skyGroup);
1573     mRoot->addChild(sceneGroup);
1574     if ( _classicalRenderer )
1575         mRoot->addChild(sunLight);
1576
1577     // Clouds are added to the scene graph later
1578     stateSet = globals->get_scenery()->get_scene_graph()->getOrCreateStateSet();
1579     stateSet->setMode(GL_ALPHA_TEST, osg::StateAttribute::ON);
1580     stateSet->setMode(GL_LIGHTING, osg::StateAttribute::ON);
1581     stateSet->setMode(GL_DEPTH_TEST, osg::StateAttribute::ON);
1582
1583     // enable disable specular highlights.
1584     // is the place where we might plug in an other fragment shader ...
1585     osg::LightModel* lightModel = new osg::LightModel;
1586     lightModel->setUpdateCallback(new FGLightModelUpdateCallback);
1587     stateSet->setAttribute(lightModel);
1588
1589     // switch to enable wireframe
1590     osg::PolygonMode* polygonMode = new osg::PolygonMode;
1591     polygonMode->setUpdateCallback(new FGWireFrameModeUpdateCallback);
1592     stateSet->setAttributeAndModes(polygonMode);
1593
1594     // scene fog handling
1595     osg::Fog* fog = new osg::Fog;
1596     fog->setUpdateCallback(new FGFogUpdateCallback);
1597     stateSet->setAttributeAndModes(fog);
1598     stateSet->setUpdateCallback(new FGFogEnableUpdateCallback);
1599
1600     // plug in the GUI
1601     osg::Camera* guiCamera = getGUICamera(CameraGroup::getDefault());
1602     if (guiCamera) {
1603
1604         osg::Geode* geode = new osg::Geode;
1605         geode->addDrawable(new SGPuDrawable);
1606         geode->addDrawable(new SGHUDDrawable);
1607         guiCamera->addChild(geode);
1608
1609
1610       guiCamera->addChild(FGPanelNode::create2DPanelNode());
1611     }
1612
1613     osg::Switch* sw = new osg::Switch;
1614     sw->setUpdateCallback(new FGScenerySwitchCallback);
1615     sw->addChild(mRoot.get());
1616     mRealRoot->addChild(sw);
1617     // The clouds are attached directly to the scene graph root
1618     // because, in theory, they don't want the same default state set
1619     // as the rest of the scene. This may not be true in practice.
1620         if ( _classicalRenderer ) {
1621                 mRealRoot->addChild(_sky->getCloudRoot());
1622                 mRealRoot->addChild(FGCreateRedoutNode());
1623         }
1624     // Attach empty program to the scene root so that shader programs
1625     // don't leak into state sets (effects) that shouldn't have one.
1626     stateSet = mRealRoot->getOrCreateStateSet();
1627     stateSet->setAttributeAndModes(new osg::Program, osg::StateAttribute::ON);
1628
1629         mDeferredRealRoot->addChild( mRealRoot.get() );
1630 }
1631
1632 // Update all Visuals (redraws anything graphics related)
1633 void
1634 FGRenderer::update( ) {
1635     if (!(_scenery_loaded->getBoolValue() ||
1636            _scenery_override->getBoolValue()))
1637     {
1638         _splash_alpha->setDoubleValue(1.0);
1639         return;
1640     }
1641     osgViewer::Viewer* viewer = globals->get_renderer()->getViewer();
1642
1643     if (_splash_alpha->getDoubleValue()>0.0)
1644     {
1645         // Fade out the splash screen
1646         const double fade_time = 0.5;
1647         const double fade_steps_per_sec = 10;
1648         double delay_time = SGMiscd::min(fade_time/fade_steps_per_sec,
1649                                          (SGTimeStamp::now() - _splash_time).toSecs());
1650         _splash_time = SGTimeStamp::now();
1651         double sAlpha = _splash_alpha->getDoubleValue();
1652         sAlpha -= SGMiscd::max(0.0,delay_time/fade_time);
1653         FGScenerySwitchCallback::scenery_enabled = (sAlpha<1.0);
1654         _splash_alpha->setDoubleValue((sAlpha < 0) ? 0.0 : sAlpha);
1655     }
1656
1657     FGLight *l = static_cast<FGLight*>(globals->get_subsystem("lighting"));
1658         if (!_classicalRenderer ) {
1659                 _ambientFactor->set( toOsg(l->scene_ambient()) );
1660                 _sunDiffuse->set( toOsg(l->scene_diffuse()) );
1661                 _sunSpecular->set( toOsg(l->scene_specular()) );
1662                 _sunDirection->set( osg::Vec3f(l->sun_vec()[0], l->sun_vec()[1], l->sun_vec()[2]) );
1663         }
1664
1665     // update fog params
1666     double actual_visibility;
1667     if (_cloud_status->getBoolValue()) {
1668         actual_visibility = _sky->get_visibility();
1669     } else {
1670         actual_visibility = _visibility_m->getDoubleValue();
1671     }
1672
1673     // idle_state is now 1000 meaning we've finished all our
1674     // initializations and are running the main loop, so this will
1675     // now work without seg faulting the system.
1676
1677     FGViewer *current__view = globals->get_current_view();
1678     // Force update of center dependent values ...
1679     current__view->set_dirty();
1680
1681     osg::Camera *camera = viewer->getCamera();
1682
1683     bool skyblend = _skyblend->getBoolValue();
1684     if ( skyblend ) {
1685
1686         if ( _textures->getBoolValue() ) {
1687             SGVec4f clearColor(l->adj_fog_color());
1688             camera->setClearColor(toOsg(clearColor));
1689         }
1690     } else {
1691         SGVec4f clearColor(l->sky_color());
1692         camera->setClearColor(toOsg(clearColor));
1693     }
1694
1695     // update fog params if visibility has changed
1696     double visibility_meters = _visibility_m->getDoubleValue();
1697     _sky->set_visibility(visibility_meters);
1698
1699     double altitude_m = _altitude_ft->getDoubleValue() * SG_FEET_TO_METER;
1700     _sky->modify_vis( altitude_m, 0.0 /* time factor, now unused */);
1701
1702     // update the sky dome
1703     if ( skyblend ) {
1704
1705         // The sun and moon distances are scaled down versions
1706         // of the actual distance to get both the moon and the sun
1707         // within the range of the far clip plane.
1708         // Moon distance:    384,467 kilometers
1709         // Sun distance: 150,000,000 kilometers
1710
1711         double sun_horiz_eff, moon_horiz_eff;
1712         if (_horizon_effect->getBoolValue()) {
1713             sun_horiz_eff
1714                 = 0.67 + pow(osg::clampAbove(0.5 + cos(l->get_sun_angle()),
1715                                              0.0),
1716                              0.33) / 3.0;
1717             moon_horiz_eff
1718                 = 0.67 + pow(osg::clampAbove(0.5 + cos(l->get_moon_angle()),
1719                                              0.0),
1720                              0.33)/3.0;
1721         } else {
1722            sun_horiz_eff = moon_horiz_eff = 1.0;
1723         }
1724
1725         SGSkyState sstate;
1726         sstate.pos       = current__view->getViewPosition();
1727         sstate.pos_geod  = current__view->getPosition();
1728         sstate.ori       = current__view->getViewOrientation();
1729         sstate.spin      = l->get_sun_rotation();
1730         sstate.gst       = globals->get_time_params()->getGst();
1731         sstate.sun_dist  = 50000.0 * sun_horiz_eff;
1732         sstate.moon_dist = 40000.0 * moon_horiz_eff;
1733         sstate.sun_angle = l->get_sun_angle();
1734
1735         SGSkyColor scolor;
1736         scolor.sky_color   = SGVec3f(l->sky_color().data());
1737         scolor.adj_sky_color = SGVec3f(l->adj_sky_color().data());
1738         scolor.fog_color   = SGVec3f(l->adj_fog_color().data());
1739         scolor.cloud_color = SGVec3f(l->cloud_color().data());
1740         scolor.sun_angle   = l->get_sun_angle();
1741         scolor.moon_angle  = l->get_moon_angle();
1742
1743         double delta_time_sec = _sim_delta_sec->getDoubleValue();
1744         _sky->reposition( sstate, *globals->get_ephem(), delta_time_sec );
1745         _sky->repaint( scolor, *globals->get_ephem() );
1746
1747             //OSGFIXME
1748 //         shadows->setupShadows(
1749 //           current__view->getLongitude_deg(),
1750 //           current__view->getLatitude_deg(),
1751 //           globals->get_time_params()->getGst(),
1752 //           globals->get_ephem()->getSunRightAscension(),
1753 //           globals->get_ephem()->getSunDeclination(),
1754 //           l->get_sun_angle());
1755
1756     }
1757
1758 //     sgEnviro.setLight(l->adj_fog_color());
1759 //     sgEnviro.startOfFrame(current__view->get_view_pos(),
1760 //         current__view->get_world_up(),
1761 //         current__view->getLongitude_deg(),
1762 //         current__view->getLatitude_deg(),
1763 //         current__view->getAltitudeASL_ft() * SG_FEET_TO_METER,
1764 //         delta_time_sec);
1765
1766     // OSGFIXME
1767 //     sgEnviro.drawLightning();
1768
1769 //        double current_view_origin_airspeed_horiz_kt =
1770 //         fgGetDouble("/velocities/airspeed-kt", 0.0)
1771 //                        * cos( fgGetDouble("/orientation/pitch-deg", 0.0)
1772 //                                * SGD_DEGREES_TO_RADIANS);
1773
1774     // OSGFIXME
1775 //     if( is_internal )
1776 //         shadows->endOfFrame();
1777
1778     // need to call the update visitor once
1779     mFrameStamp->setCalendarTime(*globals->get_time_params()->getGmt());
1780     mUpdateVisitor->setViewData(current__view->getViewPosition(),
1781                                 current__view->getViewOrientation());
1782     SGVec3f direction(l->sun_vec()[0], l->sun_vec()[1], l->sun_vec()[2]);
1783     mUpdateVisitor->setLight(direction, l->scene_ambient(),
1784                              l->scene_diffuse(), l->scene_specular(),
1785                              l->adj_fog_color(),
1786                              l->get_sun_angle()*SGD_RADIANS_TO_DEGREES);
1787     mUpdateVisitor->setVisibility(actual_visibility);
1788     simgear::GroundLightManager::instance()->update(mUpdateVisitor.get());
1789     osg::Node::NodeMask cullMask = ~simgear::LIGHTS_BITS & ~simgear::PICK_BIT;
1790     cullMask |= simgear::GroundLightManager::instance()
1791         ->getLightNodeMask(mUpdateVisitor.get());
1792     if (_panel_hotspots->getBoolValue())
1793         cullMask |= simgear::PICK_BIT;
1794     CameraGroup::getDefault()->setCameraCullMasks(cullMask);
1795         if ( !_classicalRenderer ) {
1796                 _fogColor->set( toOsg( l->adj_fog_color() ) );
1797                 _fogDensity->set( float( mUpdateVisitor->getFogExp2Density() ) );
1798         }
1799 }
1800
1801 void
1802 FGRenderer::resize( int width, int height )
1803 {
1804     int curWidth = _xsize->getIntValue(),
1805         curHeight = _ysize->getIntValue();
1806     SG_LOG(SG_VIEW, SG_DEBUG, "FGRenderer::resize: new size " << width << " x " << height);
1807     if ((curHeight != height) || (curWidth != width)) {
1808     // must guard setting these, or PLIB-PUI fails with too many live interfaces
1809         _xsize->setIntValue(width);
1810         _ysize->setIntValue(height);
1811     }
1812 }
1813
1814 bool
1815 FGRenderer::pick(std::vector<SGSceneryPick>& pickList,
1816                  const osgGA::GUIEventAdapter* ea)
1817 {
1818     // wipe out the return ...
1819     pickList.clear();
1820     typedef osgUtil::LineSegmentIntersector::Intersections Intersections;
1821     Intersections intersections;
1822
1823     if (!computeIntersections(CameraGroup::getDefault(), ea, intersections))
1824         return false;
1825     for (Intersections::iterator hit = intersections.begin(),
1826              e = intersections.end();
1827          hit != e;
1828          ++hit) {
1829         const osg::NodePath& np = hit->nodePath;
1830         osg::NodePath::const_reverse_iterator npi;
1831         for (npi = np.rbegin(); npi != np.rend(); ++npi) {
1832             SGSceneUserData* ud = SGSceneUserData::getSceneUserData(*npi);
1833             if (!ud)
1834                 continue;
1835             for (unsigned i = 0; i < ud->getNumPickCallbacks(); ++i) {
1836                 SGPickCallback* pickCallback = ud->getPickCallback(i);
1837                 if (!pickCallback)
1838                     continue;
1839                 SGSceneryPick sceneryPick;
1840                 sceneryPick.info.local = toSG(hit->getLocalIntersectPoint());
1841                 sceneryPick.info.wgs84 = toSG(hit->getWorldIntersectPoint());
1842                 sceneryPick.callback = pickCallback;
1843                 pickList.push_back(sceneryPick);
1844             }
1845         }
1846     }
1847     return !pickList.empty();
1848 }
1849
1850 void
1851 FGRenderer::setViewer(osgViewer::Viewer* viewer_)
1852 {
1853     viewer = viewer_;
1854 }
1855
1856 void
1857 FGRenderer::setEventHandler(FGEventHandler* eventHandler_)
1858 {
1859     eventHandler = eventHandler_;
1860 }
1861
1862 void
1863 FGRenderer::addCamera(osg::Camera* camera, bool useSceneData)
1864 {
1865     mRealRoot->addChild(camera);
1866 }
1867
1868 void
1869 FGRenderer::removeCamera(osg::Camera* camera)
1870 {
1871     mRealRoot->removeChild(camera);
1872 }
1873
1874 void
1875 FGRenderer::setPlanes( double zNear, double zFar )
1876 {
1877         _planes->set( osg::Vec3f( - zFar, - zFar * zNear, zFar - zNear ) );
1878 }
1879
1880 bool
1881 fgDumpSceneGraphToFile(const char* filename)
1882 {
1883     return osgDB::writeNodeFile(*mRealRoot.get(), filename);
1884 }
1885
1886 bool
1887 fgDumpTerrainBranchToFile(const char* filename)
1888 {
1889     return osgDB::writeNodeFile( *globals->get_scenery()->get_terrain_branch(),
1890                                  filename );
1891 }
1892
1893 // For debugging
1894 bool
1895 fgDumpNodeToFile(osg::Node* node, const char* filename)
1896 {
1897     return osgDB::writeNodeFile(*node, filename);
1898 }
1899
1900 namespace flightgear
1901 {
1902 using namespace osg;
1903
1904 class VisibleSceneInfoVistor : public NodeVisitor, CullStack
1905 {
1906 public:
1907     VisibleSceneInfoVistor()
1908         : NodeVisitor(CULL_VISITOR, TRAVERSE_ACTIVE_CHILDREN)
1909     {
1910         setCullingMode(CullSettings::SMALL_FEATURE_CULLING
1911                        | CullSettings::VIEW_FRUSTUM_CULLING);
1912         setComputeNearFarMode(CullSettings::DO_NOT_COMPUTE_NEAR_FAR);
1913     }
1914
1915     VisibleSceneInfoVistor(const VisibleSceneInfoVistor& rhs)
1916     {
1917     }
1918
1919     META_NodeVisitor("flightgear","VisibleSceneInfoVistor")
1920
1921     typedef std::map<const std::string,int> InfoMap;
1922
1923     void getNodeInfo(Node* node)
1924     {
1925         const char* typeName = typeid(*node).name();
1926         classInfo[typeName]++;
1927         const std::string& nodeName = node->getName();
1928         if (!nodeName.empty())
1929             nodeInfo[nodeName]++;
1930     }
1931
1932     void dumpInfo()
1933     {
1934         using namespace std;
1935         typedef vector<InfoMap::iterator> FreqVector;
1936         cout << "class info:\n";
1937         FreqVector classes;
1938         for (InfoMap::iterator itr = classInfo.begin(), end = classInfo.end();
1939              itr != end;
1940              ++itr)
1941             classes.push_back(itr);
1942         sort(classes.begin(), classes.end(), freqComp);
1943         for (FreqVector::iterator itr = classes.begin(), end = classes.end();
1944              itr != end;
1945              ++itr) {
1946             cout << (*itr)->first << " " << (*itr)->second << "\n";
1947         }
1948         cout << "\nnode info:\n";
1949         FreqVector nodes;
1950         for (InfoMap::iterator itr = nodeInfo.begin(), end = nodeInfo.end();
1951              itr != end;
1952              ++itr)
1953             nodes.push_back(itr);
1954
1955         sort (nodes.begin(), nodes.end(), freqComp);
1956         for (FreqVector::iterator itr = nodes.begin(), end = nodes.end();
1957              itr != end;
1958              ++itr) {
1959             cout << (*itr)->first << " " << (*itr)->second << "\n";
1960         }
1961         cout << endl;
1962     }
1963
1964     void doTraversal(Camera* camera, Node* root, Viewport* viewport)
1965     {
1966         ref_ptr<RefMatrix> projection
1967             = createOrReuseMatrix(camera->getProjectionMatrix());
1968         ref_ptr<RefMatrix> mv = createOrReuseMatrix(camera->getViewMatrix());
1969         if (!viewport)
1970             viewport = camera->getViewport();
1971         if (viewport)
1972             pushViewport(viewport);
1973         pushProjectionMatrix(projection.get());
1974         pushModelViewMatrix(mv.get(), Transform::ABSOLUTE_RF);
1975         root->accept(*this);
1976         popModelViewMatrix();
1977         popProjectionMatrix();
1978         if (viewport)
1979             popViewport();
1980         dumpInfo();
1981     }
1982
1983     void apply(Node& node)
1984     {
1985         if (isCulled(node))
1986             return;
1987         pushCurrentMask();
1988         getNodeInfo(&node);
1989         traverse(node);
1990         popCurrentMask();
1991     }
1992     void apply(Group& node)
1993     {
1994         if (isCulled(node))
1995             return;
1996         pushCurrentMask();
1997         getNodeInfo(&node);
1998         traverse(node);
1999         popCurrentMask();
2000     }
2001
2002     void apply(Transform& node)
2003     {
2004         if (isCulled(node))
2005             return;
2006         pushCurrentMask();
2007         ref_ptr<RefMatrix> matrix = createOrReuseMatrix(*getModelViewMatrix());
2008         node.computeLocalToWorldMatrix(*matrix,this);
2009         pushModelViewMatrix(matrix.get(), node.getReferenceFrame());
2010         getNodeInfo(&node);
2011         traverse(node);
2012         popModelViewMatrix();
2013         popCurrentMask();
2014     }
2015
2016     void apply(Camera& camera)
2017     {
2018         // Save current cull settings
2019         CullSettings saved_cull_settings(*this);
2020
2021         // set cull settings from this Camera
2022         setCullSettings(camera);
2023         // inherit the settings from above
2024         inheritCullSettings(saved_cull_settings, camera.getInheritanceMask());
2025
2026         // set the cull mask.
2027         unsigned int savedTraversalMask = getTraversalMask();
2028         bool mustSetCullMask = (camera.getInheritanceMask()
2029                                 & osg::CullSettings::CULL_MASK) == 0;
2030         if (mustSetCullMask)
2031             setTraversalMask(camera.getCullMask());
2032
2033         osg::RefMatrix* projection = 0;
2034         osg::RefMatrix* modelview = 0;
2035
2036         if (camera.getReferenceFrame()==osg::Transform::RELATIVE_RF) {
2037             if (camera.getTransformOrder()==osg::Camera::POST_MULTIPLY) {
2038                 projection = createOrReuseMatrix(*getProjectionMatrix()
2039                                                  *camera.getProjectionMatrix());
2040                 modelview = createOrReuseMatrix(*getModelViewMatrix()
2041                                                 * camera.getViewMatrix());
2042             }
2043             else {              // pre multiply
2044                 projection = createOrReuseMatrix(camera.getProjectionMatrix()
2045                                                  * (*getProjectionMatrix()));
2046                 modelview = createOrReuseMatrix(camera.getViewMatrix()
2047                                                 * (*getModelViewMatrix()));
2048             }
2049         } else {
2050             // an absolute reference frame
2051             projection = createOrReuseMatrix(camera.getProjectionMatrix());
2052             modelview = createOrReuseMatrix(camera.getViewMatrix());
2053         }
2054         if (camera.getViewport())
2055             pushViewport(camera.getViewport());
2056
2057         pushProjectionMatrix(projection);
2058         pushModelViewMatrix(modelview, camera.getReferenceFrame());
2059
2060         traverse(camera);
2061
2062         // restore the previous model view matrix.
2063         popModelViewMatrix();
2064
2065         // restore the previous model view matrix.
2066         popProjectionMatrix();
2067
2068         if (camera.getViewport()) popViewport();
2069
2070         // restore the previous traversal mask settings
2071         if (mustSetCullMask)
2072             setTraversalMask(savedTraversalMask);
2073
2074         // restore the previous cull settings
2075         setCullSettings(saved_cull_settings);
2076     }
2077
2078 protected:
2079     // sort in reverse
2080     static bool freqComp(const InfoMap::iterator& lhs, const InfoMap::iterator& rhs)
2081     {
2082         return lhs->second > rhs->second;
2083     }
2084     InfoMap classInfo;
2085     InfoMap nodeInfo;
2086 };
2087
2088 bool printVisibleSceneInfo(FGRenderer* renderer)
2089 {
2090     osgViewer::Viewer* viewer = renderer->getViewer();
2091     VisibleSceneInfoVistor vsv;
2092     Viewport* vp = 0;
2093     if (!viewer->getCamera()->getViewport() && viewer->getNumSlaves() > 0) {
2094         const View::Slave& slave = viewer->getSlave(0);
2095         vp = slave._camera->getViewport();
2096     }
2097     vsv.doTraversal(viewer->getCamera(), viewer->getSceneData(), vp);
2098     return true;
2099 }
2100
2101 }
2102 // end of renderer.cxx
2103