src/Main/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 <osg/ref_ptr>
  39 #include <osg/AlphaFunc>
  40 #include <osg/BlendFunc>
  41 #include <osg/Camera>
  42 #include <osg/CullFace>
  43 #include <osg/CullStack>
  44 #include <osg/Depth>
  45 #include <osg/Fog>
  46 #include <osg/Group>
  47 #include <osg/Hint>
  48 #include <osg/Light>
  49 #include <osg/LightModel>
  50 #include <osg/LightSource>
  51 #include <osg/Material>
  52 #include <osg/Math>
  53 #include <osg/NodeCallback>
  54 #include <osg/Notify>
  55 #include <osg/PolygonMode>
  56 #include <osg/PolygonOffset>
  57 #include <osg/Program>
  58 #include <osg/Version>
  59 #include <osg/TexEnv>
  60
  61 #include <osgUtil/LineSegmentIntersector>
  62
  63 #include <osg/io_utils>
  64 #include <osgDB/WriteFile>
  65 #include <osgViewer/Renderer>
  66
  67 #include <simgear/math/SGMath.hxx>
  68 #include <simgear/scene/material/matlib.hxx>
  69 #include <simgear/scene/material/EffectCullVisitor.hxx>
  70 #include <simgear/scene/material/Effect.hxx>
  71 #include <simgear/scene/material/EffectGeode.hxx>
  72 #include <simgear/scene/model/animation.hxx>
  73 #include <simgear/scene/model/placement.hxx>
  74 #include <simgear/scene/sky/sky.hxx>
  75 #include <simgear/scene/util/SGUpdateVisitor.hxx>
  76 #include <simgear/scene/util/RenderConstants.hxx>
  77 #include <simgear/scene/util/SGSceneUserData.hxx>
  78 #include <simgear/scene/tgdb/GroundLightManager.hxx>
  79 #include <simgear/scene/tgdb/pt_lights.hxx>
  80 #include <simgear/structure/OSGUtils.hxx>
  81 #include <simgear/props/props.hxx>
  82 #include <simgear/timing/sg_time.hxx>
  83 #include <simgear/ephemeris/ephemeris.hxx>
  84 #include <simgear/math/sg_random.h>
  85 #ifdef FG_JPEG_SERVER
  86 #include <simgear/screen/jpgfactory.hxx>
  87 #endif
  88
  89 #include <Time/light.hxx>
  90 #include <Time/light.hxx>
  91 #include <Cockpit/panel.hxx>
  92
  93 #include <Model/panelnode.hxx>
  94 #include <Model/modelmgr.hxx>
  95 #include <Model/acmodel.hxx>
  96 #include <Scenery/scenery.hxx>
  97 #include <Scenery/redout.hxx>
  98 #include <GUI/new_gui.hxx>
  99 #include <Instrumentation/HUD/HUD.hxx>
 100 #include <Environment/precipitation_mgr.hxx>
 101 #include <Environment/environment_mgr.hxx>
 102
 103 #include "splash.hxx"
 104 #include "renderer.hxx"
 105 #include "main.hxx"
 106 #include "CameraGroup.hxx"
 107 #include "FGEventHandler.hxx"
 108 #include <Main/viewer.hxx>
 109 #include <Main/viewmgr.hxx>
 110
 111 using namespace osg;
 112 using namespace simgear;
 113 using namespace flightgear;
 114
 115 class FGHintUpdateCallback : public osg::StateAttribute::Callback {
 116 public:
 117   FGHintUpdateCallback(const char* configNode) :
 118     mConfigNode(fgGetNode(configNode, true))
 119   { }
 120   virtual void operator()(osg::StateAttribute* stateAttribute,
 121                           osg::NodeVisitor*)
 122   {
 123     assert(dynamic_cast<osg::Hint*>(stateAttribute));
 124     osg::Hint* hint = static_cast<osg::Hint*>(stateAttribute);
 125
 126     const char* value = mConfigNode->getStringValue();
 127     if (!value)
 128       hint->setMode(GL_DONT_CARE);
 129     else if (0 == strcmp(value, "nicest"))
 130       hint->setMode(GL_NICEST);
 131     else if (0 == strcmp(value, "fastest"))
 132       hint->setMode(GL_FASTEST);
 133     else
 134       hint->setMode(GL_DONT_CARE);
 135   }
 136 private:
 137   SGPropertyNode_ptr mConfigNode;
 138 };
 139
 140
 141 class SGPuDrawable : public osg::Drawable {
 142 public:
 143   SGPuDrawable()
 144   {
 145     // Dynamic stuff, do not store geometry
 146     setUseDisplayList(false);
 147     setDataVariance(Object::DYNAMIC);
 148
 149     osg::StateSet* stateSet = getOrCreateStateSet();
 150     stateSet->setRenderBinDetails(1001, "RenderBin");
 151     // speed optimization?
 152     stateSet->setMode(GL_CULL_FACE, osg::StateAttribute::OFF);
 153     // We can do translucent menus, so why not. :-)
 154     stateSet->setAttribute(new osg::BlendFunc(osg::BlendFunc::SRC_ALPHA, osg::BlendFunc::ONE_MINUS_SRC_ALPHA));
 155     stateSet->setMode(GL_BLEND, osg::StateAttribute::ON);
 156     stateSet->setTextureMode(0, GL_TEXTURE_2D, osg::StateAttribute::OFF);
 157
 158     stateSet->setTextureAttribute(0, new osg::TexEnv(osg::TexEnv::MODULATE));
 159
 160     stateSet->setMode(GL_FOG, osg::StateAttribute::OFF);
 161     stateSet->setMode(GL_DEPTH_TEST, osg::StateAttribute::OFF);
 162   }
 163   virtual void drawImplementation(osg::RenderInfo& renderInfo) const
 164   { drawImplementation(*renderInfo.getState()); }
 165   void drawImplementation(osg::State& state) const
 166   {
 167     state.setActiveTextureUnit(0);
 168     state.setClientActiveTextureUnit(0);
 169
 170     state.disableAllVertexArrays();
 171
 172     glPushAttrib(GL_ALL_ATTRIB_BITS);
 173     glPushClientAttrib(~0u);
 174
 175     puDisplay();
 176
 177     glPopClientAttrib();
 178     glPopAttrib();
 179   }
 180
 181   virtual osg::Object* cloneType() const { return new SGPuDrawable; }
 182   virtual osg::Object* clone(const osg::CopyOp&) const { return new SGPuDrawable; }
 183
 184 private:
 185 };
 186
 187 class SGHUDDrawable : public osg::Drawable {
 188 public:
 189   SGHUDDrawable()
 190   {
 191     // Dynamic stuff, do not store geometry
 192     setUseDisplayList(false);
 193     setDataVariance(Object::DYNAMIC);
 194
 195     osg::StateSet* stateSet = getOrCreateStateSet();
 196     stateSet->setRenderBinDetails(1000, "RenderBin");
 197
 198     // speed optimization?
 199     stateSet->setMode(GL_CULL_FACE, osg::StateAttribute::OFF);
 200     stateSet->setAttribute(new osg::BlendFunc(osg::BlendFunc::SRC_ALPHA, osg::BlendFunc::ONE_MINUS_SRC_ALPHA));
 201     stateSet->setMode(GL_BLEND, osg::StateAttribute::ON);
 202     stateSet->setMode(GL_FOG, osg::StateAttribute::OFF);
 203     stateSet->setMode(GL_DEPTH_TEST, osg::StateAttribute::OFF);
 204
 205     stateSet->setTextureAttribute(0, new osg::TexEnv(osg::TexEnv::MODULATE));
 206   }
 207   virtual void drawImplementation(osg::RenderInfo& renderInfo) const
 208   { drawImplementation(*renderInfo.getState()); }
 209   void drawImplementation(osg::State& state) const
 210   {
 211     state.setActiveTextureUnit(0);
 212     state.setClientActiveTextureUnit(0);
 213     state.disableAllVertexArrays();
 214
 215     glPushAttrib(GL_ALL_ATTRIB_BITS);
 216     glPushClientAttrib(~0u);
 217
 218     HUD *hud = static_cast<HUD*>(globals->get_subsystem("hud"));
 219     hud->draw(state);
 220
 221     glPopClientAttrib();
 222     glPopAttrib();
 223   }
 224
 225   virtual osg::Object* cloneType() const { return new SGHUDDrawable; }
 226   virtual osg::Object* clone(const osg::CopyOp&) const { return new SGHUDDrawable; }
 227
 228 private:
 229 };
 230
 231 class FGLightSourceUpdateCallback : public osg::NodeCallback {
 232 public:
 233
 234   /**
 235    * @param isSun true if the light is the actual sun i.e., for
 236    * illuminating the moon.
 237    */
 238   FGLightSourceUpdateCallback(bool isSun = false) : _isSun(isSun) {}
 239   FGLightSourceUpdateCallback(const FGLightSourceUpdateCallback& nc,
 240                               const CopyOp& op)
 241     : NodeCallback(nc, op), _isSun(nc._isSun)
 242   {}
 243   META_Object(flightgear,FGLightSourceUpdateCallback);
 244
 245   virtual void operator()(osg::Node* node, osg::NodeVisitor* nv)
 246   {
 247     assert(dynamic_cast<osg::LightSource*>(node));
 248     osg::LightSource* lightSource = static_cast<osg::LightSource*>(node);
 249     osg::Light* light = lightSource->getLight();
 250
 251     FGLight *l = static_cast<FGLight*>(globals->get_subsystem("lighting"));
 252     if (_isSun) {
 253       light->setAmbient(Vec4(0.0f, 0.0f, 0.0f, 0.0f));
 254       light->setDiffuse(Vec4(1.0f, 1.0f, 1.0f, 1.0f));
 255       light->setSpecular(Vec4(0.0f, 0.0f, 0.0f, 0.0f));
 256     } else {
 257       light->setAmbient(toOsg(l->scene_ambient()));
 258       light->setDiffuse(toOsg(l->scene_diffuse()));
 259       light->setSpecular(toOsg(l->scene_specular()));
 260     }
 261     osg::Vec4f position(l->sun_vec()[0], l->sun_vec()[1], l->sun_vec()[2], 0);
 262     light->setPosition(position);
 263
 264     traverse(node, nv);
 265   }
 266 private:
 267   const bool _isSun;
 268 };
 269
 270 class FGWireFrameModeUpdateCallback : public osg::StateAttribute::Callback {
 271 public:
 272   FGWireFrameModeUpdateCallback() :
 273     mWireframe(fgGetNode("/sim/rendering/wireframe", true))
 274   { }
 275   virtual void operator()(osg::StateAttribute* stateAttribute,
 276                           osg::NodeVisitor*)
 277   {
 278     assert(dynamic_cast<osg::PolygonMode*>(stateAttribute));
 279     osg::PolygonMode* polygonMode;
 280     polygonMode = static_cast<osg::PolygonMode*>(stateAttribute);
 281
 282     if (mWireframe->getBoolValue())
 283       polygonMode->setMode(osg::PolygonMode::FRONT_AND_BACK,
 284                            osg::PolygonMode::LINE);
 285     else
 286       polygonMode->setMode(osg::PolygonMode::FRONT_AND_BACK,
 287                            osg::PolygonMode::FILL);
 288   }
 289 private:
 290   SGPropertyNode_ptr mWireframe;
 291 };
 292
 293 class FGLightModelUpdateCallback : public osg::StateAttribute::Callback {
 294 public:
 295   FGLightModelUpdateCallback() :
 296     mHighlights(fgGetNode("/sim/rendering/specular-highlight", true))
 297   { }
 298   virtual void operator()(osg::StateAttribute* stateAttribute,
 299                           osg::NodeVisitor*)
 300   {
 301     assert(dynamic_cast<osg::LightModel*>(stateAttribute));
 302     osg::LightModel* lightModel;
 303     lightModel = static_cast<osg::LightModel*>(stateAttribute);
 304
 305 #if 0
 306     FGLight *l = static_cast<FGLight*>(globals->get_subsystem("lighting"));
 307     lightModel->setAmbientIntensity(toOsg(l->scene_ambient());
 308 #else
 309     lightModel->setAmbientIntensity(osg::Vec4(0, 0, 0, 1));
 310 #endif
 311     lightModel->setTwoSided(true);
 312     lightModel->setLocalViewer(false);
 313
 314     if (mHighlights->getBoolValue()) {
 315       lightModel->setColorControl(osg::LightModel::SEPARATE_SPECULAR_COLOR);
 316     } else {
 317       lightModel->setColorControl(osg::LightModel::SINGLE_COLOR);
 318     }
 319   }
 320 private:
 321   SGPropertyNode_ptr mHighlights;
 322 };
 323
 324 class FGFogEnableUpdateCallback : public osg::StateSet::Callback {
 325 public:
 326   FGFogEnableUpdateCallback() :
 327     mFogEnabled(fgGetNode("/sim/rendering/fog", true))
 328   { }
 329   virtual void operator()(osg::StateSet* stateSet, osg::NodeVisitor*)
 330   {
 331     if (strcmp(mFogEnabled->getStringValue(), "disabled") == 0) {
 332       stateSet->setMode(GL_FOG, osg::StateAttribute::OFF);
 333     } else {
 334       stateSet->setMode(GL_FOG, osg::StateAttribute::ON);
 335     }
 336   }
 337 private:
 338   SGPropertyNode_ptr mFogEnabled;
 339 };
 340
 341 class FGFogUpdateCallback : public osg::StateAttribute::Callback {
 342 public:
 343   virtual void operator () (osg::StateAttribute* sa, osg::NodeVisitor* nv)
 344   {
 345     assert(dynamic_cast<SGUpdateVisitor*>(nv));
 346     assert(dynamic_cast<osg::Fog*>(sa));
 347     SGUpdateVisitor* updateVisitor = static_cast<SGUpdateVisitor*>(nv);
 348     osg::Fog* fog = static_cast<osg::Fog*>(sa);
 349     fog->setMode(osg::Fog::EXP2);
 350     fog->setColor(toOsg(updateVisitor->getFogColor()));
 351     fog->setDensity(updateVisitor->getFogExp2Density());
 352   }
 353 };
 354
 355 // update callback for the switch node guarding that splash
 356 class FGScenerySwitchCallback : public osg::NodeCallback {
 357 public:
 358   virtual void operator()(osg::Node* node, osg::NodeVisitor* nv)
 359   {
 360     assert(dynamic_cast<osg::Switch*>(node));
 361     osg::Switch* sw = static_cast<osg::Switch*>(node);
 362
 363     bool enabled = scenery_enabled;
 364     sw->setValue(0, enabled);
 365     if (!enabled)
 366       return;
 367     traverse(node, nv);
 368   }
 369
 370   static bool scenery_enabled;
 371 };
 372
 373 bool FGScenerySwitchCallback::scenery_enabled = false;
 374
 375 static osg::ref_ptr<osg::FrameStamp> mFrameStamp = new osg::FrameStamp;
 376 static osg::ref_ptr<SGUpdateVisitor> mUpdateVisitor= new SGUpdateVisitor;
 377
 378 static osg::ref_ptr<osg::Group> mRealRoot = new osg::Group;
 379 static osg::ref_ptr<osg::Group> mDeferredRealRoot = new osg::Group;
 380
 381 static osg::ref_ptr<osg::Group> mRoot = new osg::Group;
 382
 383 static osg::ref_ptr<osg::Switch> panelSwitch;
 384
 385
 386 // update callback for the switch node controlling the 2D panel
 387 class FGPanelSwitchCallback : public osg::NodeCallback {
 388 public:
 389     virtual void operator()(osg::Node* node, osg::NodeVisitor* nv)
 390     {
 391         assert(dynamic_cast<osg::Switch*>(node));
 392         osg::Switch* sw = static_cast<osg::Switch*>(node);
 393
 394         bool enabled = fgPanelVisible();
 395         sw->setValue(0, enabled);
 396         if (!enabled)
 397             return;
 398         traverse(node, nv);
 399     }
 400 };
 401
 402 #ifdef FG_JPEG_SERVER
 403 static void updateRenderer()
 404 {
 405     globals->get_renderer()->update();
 406 }
 407 #endif
 408
 409 FGRenderer::FGRenderer() :
 410     _sky(NULL),
 411     _ambientFactor( new osg::Uniform( "fg_SunAmbientColor", osg::Vec4f() ) ),
 412     _sunDiffuse( new osg::Uniform( "fg_SunDiffuseColor", osg::Vec4f() ) ),
 413     _sunSpecular( new osg::Uniform( "fg_SunSpecularColor", osg::Vec4f() ) ),
 414     _sunDirection( new osg::Uniform( "fg_SunDirection", osg::Vec3f() ) ),
 415     _planes( new osg::Uniform( "fg_Planes", osg::Vec3f() ) ),
 416     _fogColor( new osg::Uniform( "fg_FogColor", osg::Vec4f(1.0, 1.0, 1.0, 1.0) ) ),
 417     _fogDensity( new osg::Uniform( "fg_FogDensity", 0.0001f ) )
 418 {
 419 #ifdef FG_JPEG_SERVER
 420    jpgRenderFrame = updateRenderer;
 421 #endif
 422    eventHandler = new FGEventHandler;
 423 }
 424
 425 FGRenderer::~FGRenderer()
 426 {
 427 #ifdef FG_JPEG_SERVER
 428    jpgRenderFrame = NULL;
 429 #endif
 430     delete _sky;
 431 }
 432
 433 // Initialize various GL/view parameters
 434 // XXX This should be called "preinit" or something, as it initializes
 435 // critical parts of the scene graph in addition to the splash screen.
 436 void
 437 FGRenderer::splashinit( void ) {
 438     osgViewer::Viewer* viewer = getViewer();
 439     mRealRoot = dynamic_cast<osg::Group*>(viewer->getSceneData());
 440     mRealRoot->addChild(fgCreateSplashNode());
 441     mFrameStamp = viewer->getFrameStamp();
 442     // Scene doesn't seem to pass the frame stamp to the update
 443     // visitor automatically.
 444     mUpdateVisitor->setFrameStamp(mFrameStamp.get());
 445     viewer->setUpdateVisitor(mUpdateVisitor.get());
 446     fgSetDouble("/sim/startup/splash-alpha", 1.0);
 447 }
 448
 449 class ShadowMapSizeListener : public SGPropertyChangeListener {
 450 public:
 451     virtual void valueChanged(SGPropertyNode* node) {
 452         globals->get_renderer()->updateShadowMapSize(node->getIntValue());
 453     }
 454 };
 455
 456 void
 457 FGRenderer::init( void )
 458 {
 459         _classicalRenderer = !fgGetBool("/sim/rendering/rembrandt", false);
 460     _shadowMapSize    = fgGetInt( "/sim/rendering/shadows/map-size", 4096 );
 461     fgAddChangeListener( new ShadowMapSizeListener, "/sim/rendering/shadows/map-size" );
 462     _scenery_loaded   = fgGetNode("/sim/sceneryloaded", true);
 463     _scenery_override = fgGetNode("/sim/sceneryloaded-override", true);
 464     _panel_hotspots   = fgGetNode("/sim/panel-hotspots", true);
 465     _virtual_cockpit  = fgGetNode("/sim/virtual-cockpit", true);
 466
 467     _sim_delta_sec = fgGetNode("/sim/time/delta-sec", true);
 468
 469     _xsize         = fgGetNode("/sim/startup/xsize", true);
 470     _ysize         = fgGetNode("/sim/startup/ysize", true);
 471     _splash_alpha  = fgGetNode("/sim/startup/splash-alpha", true);
 472
 473     _skyblend             = fgGetNode("/sim/rendering/skyblend", true);
 474     _point_sprites        = fgGetNode("/sim/rendering/point-sprites", true);
 475     _enhanced_lighting    = fgGetNode("/sim/rendering/enhanced-lighting", true);
 476     _distance_attenuation = fgGetNode("/sim/rendering/distance-attenuation", true);
 477     _horizon_effect       = fgGetNode("/sim/rendering/horizon-effect", true);
 478     _textures             = fgGetNode("/sim/rendering/textures", true);
 479
 480     _altitude_ft = fgGetNode("/position/altitude-ft", true);
 481
 482     _cloud_status = fgGetNode("/environment/clouds/status", true);
 483     _visibility_m = fgGetNode("/environment/visibility-m", true);
 484
 485     bool use_point_sprites = _point_sprites->getBoolValue();
 486     bool enhanced_lighting = _enhanced_lighting->getBoolValue();
 487     bool distance_attenuation = _distance_attenuation->getBoolValue();
 488
 489     SGConfigureDirectionalLights( use_point_sprites, enhanced_lighting,
 490                                   distance_attenuation );
 491
 492     if (const char* tc = fgGetString("/sim/rendering/texture-compression", NULL)) {
 493       if (strcmp(tc, "false") == 0 || strcmp(tc, "off") == 0 ||
 494           strcmp(tc, "0") == 0 || strcmp(tc, "no") == 0 ||
 495           strcmp(tc, "none") == 0) {
 496         SGSceneFeatures::instance()->setTextureCompression(SGSceneFeatures::DoNotUseCompression);
 497       } else if (strcmp(tc, "arb") == 0) {
 498         SGSceneFeatures::instance()->setTextureCompression(SGSceneFeatures::UseARBCompression);
 499       } else if (strcmp(tc, "dxt1") == 0) {
 500         SGSceneFeatures::instance()->setTextureCompression(SGSceneFeatures::UseDXT1Compression);
 501       } else if (strcmp(tc, "dxt3") == 0) {
 502         SGSceneFeatures::instance()->setTextureCompression(SGSceneFeatures::UseDXT3Compression);
 503       } else if (strcmp(tc, "dxt5") == 0) {
 504         SGSceneFeatures::instance()->setTextureCompression(SGSceneFeatures::UseDXT5Compression);
 505       } else {
 506         SG_LOG(SG_VIEW, SG_WARN, "Unknown texture compression setting!");
 507       }
 508     }
 509
 510 // create sky, but can't build until setupView, since we depend
 511 // on other subsystems to be inited, eg Ephemeris
 512     _sky = new SGSky;
 513
 514     SGPath texture_path(globals->get_fg_root());
 515     texture_path.append("Textures");
 516     texture_path.append("Sky");
 517     for (int i = 0; i < FGEnvironmentMgr::MAX_CLOUD_LAYERS; i++) {
 518         SGCloudLayer * layer = new SGCloudLayer(texture_path.str());
 519         _sky->add_cloud_layer(layer);
 520     }
 521
 522     _sky->texture_path( texture_path.str() );
 523 }
 524
 525 void installCullVisitor(Camera* camera)
 526 {
 527     osgViewer::Renderer* renderer
 528         = static_cast<osgViewer::Renderer*>(camera->getRenderer());
 529     for (int i = 0; i < 2; ++i) {
 530         osgUtil::SceneView* sceneView = renderer->getSceneView(i);
 531 #if SG_OSG_VERSION_LESS_THAN(3,0,0)
 532         sceneView->setCullVisitor(new simgear::EffectCullVisitor);
 533 #else
 534         osg::ref_ptr<osgUtil::CullVisitor::Identifier> identifier;
 535         identifier = sceneView->getCullVisitor()->getIdentifier();
 536         sceneView->setCullVisitor(new simgear::EffectCullVisitor);
 537         sceneView->getCullVisitor()->setIdentifier(identifier.get());
 538
 539         identifier = sceneView->getCullVisitorLeft()->getIdentifier();
 540         sceneView->setCullVisitorLeft(sceneView->getCullVisitor()->clone());
 541         sceneView->getCullVisitorLeft()->setIdentifier(identifier.get());
 542
 543         identifier = sceneView->getCullVisitorRight()->getIdentifier();
 544         sceneView->setCullVisitorRight(sceneView->getCullVisitor()->clone());
 545         sceneView->getCullVisitorRight()->setIdentifier(identifier.get());
 546 #endif
 547     }
 548 }
 549
 550 flightgear::CameraInfo*
 551 FGRenderer::buildRenderingPipeline(flightgear::CameraGroup* cgroup, unsigned flags, Camera* camera,
 552                                    const Matrix& view,
 553                                    const Matrix& projection,
 554                                                                    osg::GraphicsContext* gc,
 555                                    bool useMasterSceneData)
 556 {
 557         flightgear::CameraInfo* info = 0;
 558         if (!_classicalRenderer && (flags & (CameraGroup::GUI | CameraGroup::ORTHO)) == 0)
 559                 info = buildDeferredPipeline( cgroup, flags, camera, view, projection, gc );
 560
 561         if (info) {
 562                 return info;
 563         } else {
 564                 if ((flags & (CameraGroup::GUI | CameraGroup::ORTHO)) == 0)
 565                         _classicalRenderer = true;
 566                 return buildClassicalPipeline( cgroup, flags, camera, view, projection, useMasterSceneData );
 567         }
 568 }
 569
 570 flightgear::CameraInfo*
 571 FGRenderer::buildClassicalPipeline(flightgear::CameraGroup* cgroup, unsigned flags, osg::Camera* camera,
 572                                 const osg::Matrix& view,
 573                                 const osg::Matrix& projection,
 574                                 bool useMasterSceneData)
 575 {
 576     CameraInfo* info = new CameraInfo(flags);
 577     // The camera group will always update the camera
 578     camera->setReferenceFrame(Transform::ABSOLUTE_RF);
 579
 580     Camera* farCamera = 0;
 581     if ((flags & (CameraGroup::GUI | CameraGroup::ORTHO)) == 0) {
 582         farCamera = new Camera;
 583         farCamera->setAllowEventFocus(camera->getAllowEventFocus());
 584         farCamera->setGraphicsContext(camera->getGraphicsContext());
 585         farCamera->setCullingMode(camera->getCullingMode());
 586         farCamera->setInheritanceMask(camera->getInheritanceMask());
 587         farCamera->setReferenceFrame(Transform::ABSOLUTE_RF);
 588         // Each camera's viewport is written when the window is
 589         // resized; if the the viewport isn't copied here, it gets updated
 590         // twice and ends up with the wrong value.
 591         farCamera->setViewport(simgear::clone(camera->getViewport()));
 592         farCamera->setDrawBuffer(camera->getDrawBuffer());
 593         farCamera->setReadBuffer(camera->getReadBuffer());
 594         farCamera->setRenderTargetImplementation(
 595             camera->getRenderTargetImplementation());
 596         const Camera::BufferAttachmentMap& bufferMap
 597             = camera->getBufferAttachmentMap();
 598         if (bufferMap.count(Camera::COLOR_BUFFER) != 0) {
 599             farCamera->attach(
 600                 Camera::COLOR_BUFFER,
 601                 bufferMap.find(Camera::COLOR_BUFFER)->second._texture.get());
 602         }
 603         cgroup->getViewer()->addSlave(farCamera, projection, view, useMasterSceneData);
 604         installCullVisitor(farCamera);
 605                 int farSlaveIndex = cgroup->getViewer()->getNumSlaves() - 1;
 606                 info->addCamera( FAR_CAMERA, farCamera, farSlaveIndex );
 607         farCamera->setRenderOrder(Camera::POST_RENDER, farSlaveIndex);
 608         camera->setCullMask(camera->getCullMask() & ~simgear::BACKGROUND_BIT);
 609         camera->setClearMask(GL_DEPTH_BUFFER_BIT);
 610     }
 611     cgroup->getViewer()->addSlave(camera, projection, view, useMasterSceneData);
 612     installCullVisitor(camera);
 613     int slaveIndex = cgroup->getViewer()->getNumSlaves() - 1;
 614         info->addCamera( MAIN_CAMERA, camera, slaveIndex );
 615     camera->setRenderOrder(Camera::POST_RENDER, slaveIndex);
 616     cgroup->addCamera(info);
 617     return info;
 618 }
 619
 620 class FGDeferredRenderingCameraCullCallback : public osg::NodeCallback {
 621 public:
 622         FGDeferredRenderingCameraCullCallback( flightgear::CameraKind k, CameraInfo* i ) : kind( k ), info( i ) {}
 623         virtual void operator()( osg::Node *n, osg::NodeVisitor *nv) {
 624         simgear::EffectCullVisitor* cv = dynamic_cast<simgear::EffectCullVisitor*>(nv);
 625         osg::Camera* camera = static_cast<osg::Camera*>(n);
 626
 627         cv->clearBufferList();
 628                 cv->addBuffer(simgear::Effect::DEPTH_BUFFER, info->getBuffer( flightgear::RenderBufferInfo::DEPTH_BUFFER ) );
 629         cv->addBuffer(simgear::Effect::NORMAL_BUFFER, info->getBuffer( flightgear::RenderBufferInfo::NORMAL_BUFFER ) );
 630                 cv->addBuffer(simgear::Effect::DIFFUSE_BUFFER, info->getBuffer( flightgear::RenderBufferInfo::DIFFUSE_BUFFER ) );
 631         cv->addBuffer(simgear::Effect::SPEC_EMIS_BUFFER, info->getBuffer( flightgear::RenderBufferInfo::SPEC_EMIS_BUFFER ) );
 632                 cv->addBuffer(simgear::Effect::LIGHTING_BUFFER, info->getBuffer( flightgear::RenderBufferInfo::LIGHTING_BUFFER ) );
 633         cv->addBuffer(simgear::Effect::SHADOW_BUFFER, info->getBuffer( flightgear::RenderBufferInfo::SHADOW_BUFFER ) );
 634         // cv->addBuffer(simgear::Effect::AO_BUFFER, info->gBuffer->aoBuffer[2]);
 635
 636                 if ( !info->getRenderStageInfo(kind).fullscreen )
 637                         info->setMatrices( camera );
 638
 639         cv->traverse( *camera );
 640
 641                 if ( kind == flightgear::GEOMETRY_CAMERA ) {
 642                         // Save transparent bins to render later
 643                         osgUtil::RenderStage* renderStage = cv->getRenderStage();
 644                         osgUtil::RenderBin::RenderBinList& rbl = renderStage->getRenderBinList();
 645                         for (osgUtil::RenderBin::RenderBinList::iterator rbi = rbl.begin(); rbi != rbl.end(); ) {
 646                                 if (rbi->second->getSortMode() == osgUtil::RenderBin::SORT_BACK_TO_FRONT) {
 647                                         info->savedTransparentBins.insert( std::make_pair( rbi->first, rbi->second ) );
 648                                         rbl.erase( rbi++ );
 649                                 } else {
 650                                         ++rbi;
 651                                 }
 652                         }
 653                 } else if ( kind == flightgear::LIGHTING_CAMERA ) {
 654             osg::ref_ptr<osg::Camera> mainShadowCamera = info->getCamera( SHADOW_CAMERA );
 655                         if (mainShadowCamera.valid()) {
 656                                 osg::Group* grp = mainShadowCamera->getChild(0)->asGroup();
 657                                 for (int i = 0; i < 4; ++i ) {
 658                                         osg::TexGen* shadowTexGen = info->shadowTexGen[i];
 659                                         shadowTexGen->setMode(osg::TexGen::EYE_LINEAR);
 660
 661                                         osg::Camera* cascadeCam = static_cast<osg::Camera*>( grp->getChild(i) );
 662                                         // compute the matrix which takes a vertex from view coords into tex coords
 663                                         shadowTexGen->setPlanesFromMatrix(  cascadeCam->getProjectionMatrix() *
 664                                                                                                                 osg::Matrix::translate(1.0,1.0,1.0) *
 665                                                                                                                 osg::Matrix::scale(0.5f,0.5f,0.5f) );
 666
 667                                         osg::RefMatrix * refMatrix = new osg::RefMatrix( cascadeCam->getInverseViewMatrix() * *cv->getModelViewMatrix() );
 668
 669                                         cv->getRenderStage()->getPositionalStateContainer()->addPositionedTextureAttribute( i+1, refMatrix, shadowTexGen );
 670                                 }
 671                         }
 672                         // Render saved transparent render bins
 673                         osgUtil::RenderStage* renderStage = cv->getRenderStage();
 674                         osgUtil::RenderBin::RenderBinList& rbl = renderStage->getRenderBinList();
 675                         for (osgUtil::RenderBin::RenderBinList::iterator rbi = info->savedTransparentBins.begin(); rbi != info->savedTransparentBins.end(); ++rbi ){
 676                                 rbl.insert( std::make_pair( rbi->first + 10000, rbi->second ) );
 677                         }
 678                         info->savedTransparentBins.clear();
 679                 }
 680         }
 681
 682 private:
 683         flightgear::CameraKind kind;
 684     CameraInfo* info;
 685 };
 686
 687 osg::Texture2D* buildDeferredBuffer(GLint internalFormat, GLenum sourceFormat, GLenum sourceType, osg::Texture::WrapMode wrapMode, bool shadowComparison = false)
 688 {
 689     osg::Texture2D* tex = new osg::Texture2D;
 690     tex->setResizeNonPowerOfTwoHint( false );
 691     tex->setInternalFormat( internalFormat );
 692     tex->setShadowComparison(shadowComparison);
 693     if (shadowComparison) {
 694         tex->setShadowTextureMode(osg::Texture2D::LUMINANCE);
 695         tex->setBorderColor(osg::Vec4(1.0f,1.0f,1.0f,1.0f));
 696     }
 697     tex->setSourceFormat(sourceFormat);
 698     tex->setSourceType(sourceType);
 699     tex->setFilter( osg::Texture2D::MIN_FILTER, osg::Texture2D::LINEAR );
 700     tex->setFilter( osg::Texture2D::MAG_FILTER, osg::Texture2D::LINEAR );
 701     tex->setWrap( osg::Texture::WRAP_S, wrapMode );
 702     tex->setWrap( osg::Texture::WRAP_T, wrapMode );
 703         return tex;
 704 }
 705
 706 void buildDeferredBuffers( flightgear::CameraInfo* info, int shadowMapSize, bool normal16 )
 707 {
 708     info->addBuffer(flightgear::RenderBufferInfo::DEPTH_BUFFER, buildDeferredBuffer( GL_DEPTH_COMPONENT32, GL_DEPTH_COMPONENT, GL_FLOAT, osg::Texture::CLAMP_TO_BORDER) );
 709     if (normal16)
 710         info->addBuffer(flightgear::RenderBufferInfo::NORMAL_BUFFER, buildDeferredBuffer( 0x822C /*GL_RG16*/, 0x8227 /*GL_RG*/, GL_UNSIGNED_SHORT, osg::Texture::CLAMP_TO_BORDER) );
 711     else
 712         info->addBuffer(flightgear::RenderBufferInfo::NORMAL_BUFFER, buildDeferredBuffer( GL_RGBA8, GL_RGBA, GL_UNSIGNED_SHORT, osg::Texture::CLAMP_TO_BORDER) );
 713
 714     info->addBuffer(flightgear::RenderBufferInfo::DIFFUSE_BUFFER, buildDeferredBuffer( GL_RGBA8, GL_RGBA, GL_UNSIGNED_BYTE, osg::Texture::CLAMP_TO_BORDER) );
 715     info->addBuffer(flightgear::RenderBufferInfo::SPEC_EMIS_BUFFER, buildDeferredBuffer( GL_RGBA8, GL_RGBA, GL_UNSIGNED_BYTE, osg::Texture::CLAMP_TO_BORDER) );
 716     info->addBuffer(flightgear::RenderBufferInfo::LIGHTING_BUFFER, buildDeferredBuffer( GL_RGBA8, GL_RGBA, GL_UNSIGNED_BYTE, osg::Texture::CLAMP_TO_BORDER) );
 717     info->addBuffer(flightgear::RenderBufferInfo::SHADOW_BUFFER, buildDeferredBuffer( GL_DEPTH_COMPONENT32, GL_DEPTH_COMPONENT, GL_FLOAT, osg::Texture::CLAMP_TO_BORDER, true), 0.0f );
 718     info->getBuffer(RenderBufferInfo::SHADOW_BUFFER)->setTextureSize(shadowMapSize,shadowMapSize);
 719 }
 720
 721 void attachBufferToCamera( flightgear::CameraInfo* info, osg::Camera* camera, osg::Camera::BufferComponent c, flightgear::CameraKind ck, flightgear::RenderBufferInfo::Kind bk )
 722 {
 723     camera->attach( c, info->getBuffer(bk) );
 724     info->getRenderStageInfo(ck).buffers.insert( std::make_pair( c, bk ) );
 725 }
 726
 727 osg::Camera* FGRenderer::buildDeferredGeometryCamera( flightgear::CameraInfo* info, osg::GraphicsContext* gc )
 728 {
 729     osg::Camera* camera = new osg::Camera;
 730     info->addCamera(flightgear::GEOMETRY_CAMERA, camera );
 731
 732     camera->setCullMask( ~simgear::MODELLIGHT_BIT );
 733     camera->setName( "GeometryCamera" );
 734     camera->setGraphicsContext( gc );
 735     camera->setCullCallback( new FGDeferredRenderingCameraCullCallback( flightgear::GEOMETRY_CAMERA, info ) );
 736     camera->setClearMask( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
 737     camera->setClearColor( osg::Vec4( 0., 0., 0., 0. ) );
 738     camera->setClearDepth( 1.0 );
 739     camera->setRenderTargetImplementation( osg::Camera::FRAME_BUFFER_OBJECT );
 740     camera->setViewport( new osg::Viewport );
 741     attachBufferToCamera( info, camera, osg::Camera::DEPTH_BUFFER, flightgear::GEOMETRY_CAMERA, flightgear::RenderBufferInfo::DEPTH_BUFFER );
 742     attachBufferToCamera( info, camera, osg::Camera::COLOR_BUFFER0, flightgear::GEOMETRY_CAMERA, flightgear::RenderBufferInfo::NORMAL_BUFFER );
 743     attachBufferToCamera( info, camera, osg::Camera::COLOR_BUFFER1, flightgear::GEOMETRY_CAMERA, flightgear::RenderBufferInfo::DIFFUSE_BUFFER );
 744     attachBufferToCamera( info, camera, osg::Camera::COLOR_BUFFER2, flightgear::GEOMETRY_CAMERA, flightgear::RenderBufferInfo::SPEC_EMIS_BUFFER );
 745     camera->setDrawBuffer(GL_FRONT);
 746     camera->setReadBuffer(GL_FRONT);
 747
 748     camera->addChild( mDeferredRealRoot.get() );
 749
 750     return camera;
 751 }
 752
 753 static void setShadowCascadeStateSet( osg::Camera* cam ) {
 754     osg::StateSet* ss = cam->getOrCreateStateSet();
 755     ss->setAttribute( new osg::PolygonOffset( 1.1f, 5.0f ), osg::StateAttribute::ON | osg::StateAttribute::OVERRIDE );
 756     ss->setMode( GL_POLYGON_OFFSET_FILL, osg::StateAttribute::ON | osg::StateAttribute::OVERRIDE );
 757     ss->setRenderBinDetails( 0, "RenderBin", osg::StateSet::OVERRIDE_RENDERBIN_DETAILS );
 758     ss->setAttributeAndModes( new osg::AlphaFunc( osg::AlphaFunc::GREATER, 0.05 ), osg::StateAttribute::ON | osg::StateAttribute::OVERRIDE );
 759     ss->setAttributeAndModes( new osg::ColorMask( false, false, false, false ), osg::StateAttribute::ON | osg::StateAttribute::OVERRIDE );
 760     ss->setAttributeAndModes( new osg::CullFace( osg::CullFace::FRONT ), osg::StateAttribute::ON | osg::StateAttribute::OVERRIDE );
 761     osg::Program* program = new osg::Program;
 762     ss->setAttribute( program, osg::StateAttribute::OVERRIDE | osg::StateAttribute::ON );
 763     ss->setMode( GL_LIGHTING, osg::StateAttribute::OVERRIDE | osg::StateAttribute::OFF );
 764     ss->setMode( GL_BLEND, osg::StateAttribute::OVERRIDE | osg::StateAttribute::OFF );
 765     //ss->setTextureMode( 0, GL_TEXTURE_2D, osg::StateAttribute::OVERRIDE | osg::StateAttribute::ON );
 766     ss->setTextureMode( 0, GL_TEXTURE_3D, osg::StateAttribute::OVERRIDE | osg::StateAttribute::OFF );
 767     ss->setTextureMode( 1, GL_TEXTURE_2D, osg::StateAttribute::OVERRIDE | osg::StateAttribute::OFF );
 768     ss->setTextureMode( 1, GL_TEXTURE_3D, osg::StateAttribute::OVERRIDE | osg::StateAttribute::OFF );
 769     ss->setTextureMode( 2, GL_TEXTURE_2D, osg::StateAttribute::OVERRIDE | osg::StateAttribute::OFF );
 770     ss->setTextureMode( 2, GL_TEXTURE_3D, osg::StateAttribute::OVERRIDE | osg::StateAttribute::OFF );
 771 }
 772
 773 static osg::Camera* createShadowCascadeCamera( int no, int cascadeSize ) {
 774     osg::Camera* cascadeCam = new osg::Camera;
 775     setShadowCascadeStateSet( cascadeCam );
 776
 777     std::ostringstream oss;
 778     oss << "CascadeCamera" << (no + 1);
 779     cascadeCam->setName( oss.str() );
 780     cascadeCam->setClearMask(0);
 781     cascadeCam->setCullMask(~( simgear::MODELLIGHT_BIT /* | simgear::NO_SHADOW_BIT */ ) );
 782     cascadeCam->setCullingMode( cascadeCam->getCullingMode() & ~osg::CullSettings::SMALL_FEATURE_CULLING );
 783     cascadeCam->setAllowEventFocus(false);
 784     cascadeCam->setReferenceFrame(osg::Transform::ABSOLUTE_RF_INHERIT_VIEWPOINT);
 785     cascadeCam->setRenderOrder(osg::Camera::NESTED_RENDER);
 786     cascadeCam->setComputeNearFarMode(osg::CullSettings::DO_NOT_COMPUTE_NEAR_FAR);
 787     cascadeCam->setViewport( int( no / 2 ) * cascadeSize, (no & 1) * cascadeSize, cascadeSize, cascadeSize );
 788     return cascadeCam;
 789 }
 790
 791 osg::Camera* FGRenderer::buildDeferredShadowCamera( flightgear::CameraInfo* info, osg::GraphicsContext* gc )
 792 {
 793     osg::Camera* mainShadowCamera = new osg::Camera;
 794     info->addCamera(flightgear::SHADOW_CAMERA, mainShadowCamera, 0.0f );
 795
 796     mainShadowCamera->setName( "ShadowCamera" );
 797     mainShadowCamera->setClearMask( GL_DEPTH_BUFFER_BIT );
 798     mainShadowCamera->setClearDepth( 1.0 );
 799     mainShadowCamera->setAllowEventFocus(false);
 800     mainShadowCamera->setGraphicsContext(gc);
 801     mainShadowCamera->setRenderTargetImplementation( osg::Camera::FRAME_BUFFER_OBJECT );
 802     attachBufferToCamera( info, mainShadowCamera, osg::Camera::DEPTH_BUFFER, flightgear::SHADOW_CAMERA, flightgear::RenderBufferInfo::SHADOW_BUFFER );
 803     mainShadowCamera->setComputeNearFarMode(osg::Camera::DO_NOT_COMPUTE_NEAR_FAR);
 804     mainShadowCamera->setReferenceFrame(osg::Transform::ABSOLUTE_RF_INHERIT_VIEWPOINT);
 805     mainShadowCamera->setViewport( 0, 0, _shadowMapSize, _shadowMapSize );
 806     mainShadowCamera->setDrawBuffer(GL_FRONT);
 807     mainShadowCamera->setReadBuffer(GL_FRONT);
 808
 809     osg::Switch* shadowSwitch = new osg::Switch;
 810     mainShadowCamera->addChild( shadowSwitch );
 811
 812     for (int i = 0; i < 4; ++i ) {
 813         osg::Camera* cascadeCam = createShadowCascadeCamera( i, _shadowMapSize/2 );
 814         cascadeCam->addChild( mDeferredRealRoot.get() );
 815         shadowSwitch->addChild( cascadeCam );
 816         info->shadowTexGen[i] = new osg::TexGen;
 817     }
 818     shadowSwitch->setAllChildrenOn();
 819
 820     return mainShadowCamera;
 821 }
 822
 823 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)
 824 {
 825     osg::Camera* cascade = static_cast<osg::Camera*>( grp->getChild(idx) );
 826     osg::Matrixd &viewMatrix = cascade->getViewMatrix();
 827     osg::Matrixd &projectionMatrix = cascade->getProjectionMatrix();
 828
 829     osg::BoundingSphere bs;
 830     bs.expandBy(osg::Vec3(left,bottom,-zNear) * f1);
 831     bs.expandBy(osg::Vec3(right,top,-zNear) * f2);
 832     bs.expandBy(osg::Vec3(left,bottom,-zNear) * f2);
 833     bs.expandBy(osg::Vec3(right,top,-zNear) * f1);
 834
 835     osg::Vec4 aim = osg::Vec4(bs.center(), 1.0) * camera->getInverseViewMatrix();
 836
 837     projectionMatrix.makeOrtho( -bs.radius(), bs.radius(), -bs.radius(), bs.radius(), 1., 15000.0 );
 838     osg::Vec3 position( aim.x(), aim.y(), aim.z() );
 839     viewMatrix.makeLookAt( position + (getSunDirection() * 10000.0), position, position );
 840 }
 841
 842 osg::Vec3 FGRenderer::getSunDirection() const
 843 {
 844     osg::Vec3 val;
 845     _sunDirection->get( val );
 846     return val;
 847 }
 848
 849 void FGRenderer::updateShadowCamera(const flightgear::CameraInfo* info, const osg::Vec3d& position)
 850 {
 851     ref_ptr<Camera> mainShadowCamera = info->getCamera( SHADOW_CAMERA );
 852     if (mainShadowCamera.valid()) {
 853         ref_ptr<Switch> shadowSwitch = mainShadowCamera->getChild( 0 )->asSwitch();
 854         osg::Vec3d up = position,
 855             dir = getSunDirection();
 856         up.normalize();
 857         dir.normalize();
 858         // cos(100 deg) == -0.17
 859         if (up * dir < -0.17 ) {
 860             shadowSwitch->setAllChildrenOff();
 861         } else {
 862             double left,right,bottom,top,zNear,zFar;
 863             ref_ptr<Camera> camera = info->getCamera(GEOMETRY_CAMERA);
 864             camera->getProjectionMatrix().getFrustum(left,right,bottom,top,zNear,zFar);
 865
 866             shadowSwitch->setAllChildrenOn();
 867             osg::Group* grp = mainShadowCamera->getChild(0)->asGroup();
 868             updateShadowCascade(info, camera, grp, 0, left, right, bottom, top, zNear, 1.0, 5.0/zNear);
 869             updateShadowCascade(info, camera, grp, 1, left, right, bottom, top, zNear, 5.0/zNear,50.0/zNear);
 870             updateShadowCascade(info, camera, grp, 2, left, right, bottom, top, zNear, 50.0/zNear,512.0/zNear);
 871             updateShadowCascade(info, camera, grp, 3, left, right, bottom, top, zNear, 512.0/zNear,5000.0/zNear);
 872             {
 873             osg::Camera* cascade = static_cast<osg::Camera*>( mainShadowCamera );
 874             osg::Matrixd &viewMatrix = cascade->getViewMatrix();
 875             osg::Matrixd &projectionMatrix = cascade->getProjectionMatrix();
 876
 877             osg::Vec4 aim = osg::Vec4( 0.0, 0.0, -7500., 1.0 ) * camera->getInverseViewMatrix();
 878
 879             projectionMatrix.makeOrtho( -7500., 7500., -7500., 7500., 1., 15000.0 );
 880             osg::Vec3 position( aim.x(), aim.y(), aim.z() );
 881             viewMatrix.makeLookAt( position + (getSunDirection() * 10000.0), position, position );
 882             }
 883         }
 884     }
 885 }
 886
 887 void FGRenderer::updateShadowMapSize(int mapSize)
 888 {
 889     if ( ((~( mapSize-1 )) & mapSize) != mapSize ) {
 890         SG_LOG( SG_VIEW, SG_ALERT, "Map size is not a power of two" );
 891         return;
 892     }
 893     for (   CameraGroup::CameraIterator ii = CameraGroup::getDefault()->camerasBegin();
 894             ii != CameraGroup::getDefault()->camerasEnd();
 895             ++ii )
 896     {
 897         CameraInfo* info = ii->get();
 898         Camera* camera = info->getCamera(SHADOW_CAMERA);
 899         if (camera == 0) continue;
 900
 901         Texture2D* tex = info->getBuffer(RenderBufferInfo::SHADOW_BUFFER);
 902         if (tex == 0) continue;
 903
 904         tex->setTextureSize( mapSize, mapSize );
 905         tex->dirtyTextureObject();
 906
 907         Viewport* vp = camera->getViewport();
 908         vp->width() = mapSize;
 909         vp->height() = mapSize;
 910
 911         osgViewer::Renderer* renderer
 912             = static_cast<osgViewer::Renderer*>(camera->getRenderer());
 913         for (int i = 0; i < 2; ++i) {
 914             osgUtil::SceneView* sceneView = renderer->getSceneView(i);
 915             sceneView->getRenderStage()->setFrameBufferObject(0);
 916             sceneView->getRenderStage()->setCameraRequiresSetUp(true);
 917             if (sceneView->getRenderStageLeft()) {
 918                 sceneView->getRenderStageLeft()->setFrameBufferObject(0);
 919                 sceneView->getRenderStageLeft()->setCameraRequiresSetUp(true);
 920             }
 921             if (sceneView->getRenderStageRight()) {
 922                 sceneView->getRenderStageRight()->setFrameBufferObject(0);
 923                 sceneView->getRenderStageRight()->setCameraRequiresSetUp(true);
 924             }
 925         }
 926
 927         int cascadeSize = mapSize / 2;
 928         Group* grp = camera->getChild(0)->asGroup();
 929         for (int i = 0; i < 4; ++i ) {
 930             Camera* cascadeCam = static_cast<Camera*>( grp->getChild(i) );
 931             cascadeCam->setViewport( int( i / 2 ) * cascadeSize, (i & 1) * cascadeSize, cascadeSize, cascadeSize );
 932         }
 933
 934         _shadowMapSize = mapSize;
 935     }
 936 }
 937
 938 #define STRINGIFY(x) #x
 939 #define TOSTRING(x) STRINGIFY(x)
 940
 941 const char *ambient_vert_src = ""
 942     "#line " TOSTRING(__LINE__) " 1\n"
 943     "void main() {\n"
 944     "    gl_Position = gl_Vertex;\n"
 945     "    gl_TexCoord[0] = gl_MultiTexCoord0;\n"
 946     "}\n";
 947
 948 const char *ambient_frag_src = ""
 949     "#line " TOSTRING(__LINE__) " 1\n"
 950     "uniform sampler2D color_tex;\n"
 951 //    "uniform sampler2D ao_tex;\n"
 952     "uniform sampler2D normal_tex;\n"
 953     "uniform sampler2D spec_emis_tex;\n"
 954     "uniform vec4 fg_SunAmbientColor;\n"
 955     "void main() {\n"
 956     "    vec2 coords = gl_TexCoord[0].xy;\n"
 957     "    float initialized = texture2D( spec_emis_tex, coords ).a;\n"
 958     "    if ( initialized < 0.1 )\n"
 959     "        discard;\n"
 960     "    vec3 tcolor = texture2D( color_tex, coords ).rgb;\n"
 961 //    "    float ao = texture2D( ao_tex, coords ).r;\n"
 962 //    "    gl_FragColor = vec4(tcolor*fg_SunAmbientColor.rgb*ao, 1.0);\n"
 963     "    gl_FragColor = vec4(tcolor*fg_SunAmbientColor.rgb, 1.0);\n"
 964     "}\n";
 965
 966 const char *sunlight_vert_src = ""
 967     "#line " TOSTRING(__LINE__) " 1\n"
 968 //  "uniform mat4 fg_ViewMatrixInverse;\n"
 969     "uniform mat4 fg_ProjectionMatrixInverse;\n"
 970     "varying vec3 ray;\n"
 971     "void main() {\n"
 972     "    gl_Position = gl_Vertex;\n"
 973     "    gl_TexCoord[0] = gl_MultiTexCoord0;\n"
 974 //  "    ray = (fg_ViewMatrixInverse * vec4((fg_ProjectionMatrixInverse * gl_Vertex).xyz, 0.0)).xyz;\n"
 975     "    ray = (fg_ProjectionMatrixInverse * gl_Vertex).xyz;\n"
 976     "}\n";
 977
 978 const char *sunlight_frag_src = ""
 979 #if 0
 980     "#version 130\n"
 981 #endif
 982     "#line " TOSTRING(__LINE__) " 1\n"
 983     "uniform mat4 fg_ViewMatrix;\n"
 984     "uniform sampler2D depth_tex;\n"
 985     "uniform sampler2D normal_tex;\n"
 986     "uniform sampler2D color_tex;\n"
 987     "uniform sampler2D spec_emis_tex;\n"
 988     "uniform sampler2DShadow shadow_tex;\n"
 989     "uniform vec4 fg_SunDiffuseColor;\n"
 990     "uniform vec4 fg_SunSpecularColor;\n"
 991     "uniform vec3 fg_SunDirection;\n"
 992     "uniform vec3 fg_Planes;\n"
 993     "varying vec3 ray;\n"
 994     "vec4 DynamicShadow( in vec4 ecPosition, out vec4 tint )\n"
 995     "{\n"
 996     "    vec4 coords;\n"
 997     "    vec2 shift = vec2( 0.0 );\n"
 998     "    int index = 4;\n"
 999     "    if (ecPosition.z > -5.0) {\n"
1000     "        index = 1;\n"
1001     "        tint = vec4(0.0,1.0,0.0,1.0);\n"
1002     "    } else if (ecPosition.z > -50.0) {\n"
1003     "        index = 2;\n"
1004     "        shift = vec2( 0.0, 0.5 );\n"
1005     "        tint = vec4(0.0,0.0,1.0,1.0);\n"
1006     "    } else if (ecPosition.z > -512.0) {\n"
1007     "        index = 3;\n"
1008     "        shift = vec2( 0.5, 0.0 );\n"
1009     "        tint = vec4(1.0,1.0,0.0,1.0);\n"
1010     "    } else if (ecPosition.z > -10000.0) {\n"
1011     "        shift = vec2( 0.5, 0.5 );\n"
1012     "        tint = vec4(1.0,0.0,0.0,1.0);\n"
1013     "    } else {\n"
1014     "        return vec4(1.1,1.1,0.0,1.0);\n" // outside, clamp to border
1015     "    }\n"
1016     "    coords.s = dot( ecPosition, gl_EyePlaneS[index] );\n"
1017     "    coords.t = dot( ecPosition, gl_EyePlaneT[index] );\n"
1018     "    coords.p = dot( ecPosition, gl_EyePlaneR[index] );\n"
1019     "    coords.q = dot( ecPosition, gl_EyePlaneQ[index] );\n"
1020     "    coords.st *= .5;\n"
1021     "    coords.st += shift;\n"
1022     "    return coords;\n"
1023     "}\n"
1024     "void main() {\n"
1025     "    vec2 coords = gl_TexCoord[0].xy;\n"
1026     "    vec4 spec_emis = texture2D( spec_emis_tex, coords );\n"
1027     "    if ( spec_emis.a < 0.1 )\n"
1028     "        discard;\n"
1029     "    vec3 normal;\n"
1030     "    normal.xy = texture2D( normal_tex, coords ).rg * 2.0 - vec2(1.0,1.0);\n"
1031     "    normal.z = sqrt( 1.0 - dot( normal.xy, normal.xy ) );\n"
1032     "    float len = length(normal);\n"
1033     "    normal /= len;\n"
1034     "    vec3 viewDir = normalize(ray);\n"
1035     "    float depth = texture2D( depth_tex, coords ).r;\n"
1036     "    vec3 pos;\n"
1037     "    pos.z = - fg_Planes.y / (fg_Planes.x + depth * fg_Planes.z);\n"
1038     "    pos.xy = viewDir.xy / viewDir.z * pos.z;\n"
1039
1040     "    vec4 tint;\n"
1041 #if 0
1042     "    float shadow = 1.0;\n"
1043 #elif 1
1044     "    float shadow = shadow2DProj( shadow_tex, DynamicShadow( vec4( pos, 1.0 ), tint ) ).r;\n"
1045 #else
1046     "    float kernel[9] = float[]( 36/256.0, 24/256.0, 6/256.0,\n"
1047     "                           24/256.0, 16/256.0, 4/256.0,\n"
1048     "                           6/256.0,  4/256.0, 1/256.0 );\n"
1049     "    float shadow = 0;\n"
1050     "    for( int x = -2; x <= 2; ++x )\n"
1051     "      for( int y = -2; y <= 2; ++y )\n"
1052     "        shadow += kernel[abs(x)*3 + abs(y)] * shadow2DProj( shadow_tex, DynamicShadow( vec4(pos + vec3(0.05 * x, 0.05 * y, 0), 1.0), tint ) ).r;\n"
1053 #endif
1054     "    vec3 lightDir = (fg_ViewMatrix * vec4( fg_SunDirection, 0.0 )).xyz;\n"
1055     "    lightDir = normalize( lightDir );\n"
1056     "    vec3 color = texture2D( color_tex, coords ).rgb;\n"
1057     "    vec3 Idiff = clamp( dot( lightDir, normal ), 0.0, 1.0 ) * color * fg_SunDiffuseColor.rgb;\n"
1058     "    vec3 halfDir = lightDir - viewDir;\n"
1059     "    len = length( halfDir );\n"
1060     "    vec3 Ispec = vec3(0.0);\n"
1061     "    vec3 Iemis = spec_emis.z * color;\n"
1062     "    if (len > 0.0001) {\n"
1063     "        halfDir /= len;\n"
1064     "        Ispec = pow( clamp( dot( halfDir, normal ), 0.0, 1.0 ), spec_emis.y * 255.0 ) * spec_emis.x * fg_SunSpecularColor.rgb;\n"
1065     "    }\n"
1066     "    gl_FragColor = vec4(mix(vec3(0.0), Idiff + Ispec, shadow) + Iemis, 1.0);\n"
1067 //    "    gl_FragColor = mix(tint, vec4(mix(vec3(0.0), Idiff + Ispec, shadow) + Iemis, 1.0), 0.92);\n"
1068     "}\n";
1069
1070 const char *fog_vert_src = ""
1071     "#line " TOSTRING(__LINE__) " 1\n"
1072     "uniform mat4 fg_ProjectionMatrixInverse;\n"
1073     "varying vec3 ray;\n"
1074     "void main() {\n"
1075     "    gl_Position = gl_Vertex;\n"
1076     "    gl_TexCoord[0] = gl_MultiTexCoord0;\n"
1077     "    ray = (fg_ProjectionMatrixInverse * gl_Vertex).xyz;\n"
1078     "}\n";
1079
1080 const char *fog_frag_src = ""
1081     "#line " TOSTRING(__LINE__) " 1\n"
1082     "uniform sampler2D depth_tex;\n"
1083     "uniform sampler2D normal_tex;\n"
1084     "uniform sampler2D color_tex;\n"
1085     "uniform sampler2D spec_emis_tex;\n"
1086     "uniform vec4 fg_FogColor;\n"
1087     "uniform float fg_FogDensity;\n"
1088     "uniform vec3 fg_Planes;\n"
1089     "varying vec3 ray;\n"
1090     "void main() {\n"
1091     "    vec2 coords = gl_TexCoord[0].xy;\n"
1092     "    float initialized = texture2D( spec_emis_tex, coords ).a;\n"
1093     "    if ( initialized < 0.1 )\n"
1094     "        discard;\n"
1095     "    vec3 normal;\n"
1096     "    normal.xy = texture2D( normal_tex, coords ).rg * 2.0 - vec2(1.0,1.0);\n"
1097     "    normal.z = sqrt( 1.0 - dot( normal.xy, normal.xy ) );\n"
1098     "    float len = length(normal);\n"
1099     "    normal /= len;\n"
1100     "    vec3 viewDir = normalize(ray);\n"
1101     "    float depth = texture2D( depth_tex, coords ).r;\n"
1102     "    vec3 pos;\n"
1103     "    pos.z = - fg_Planes.y / (fg_Planes.x + depth * fg_Planes.z);\n"
1104     "    pos.xy = viewDir.xy / viewDir.z * pos.z;\n"
1105
1106     "    float fogFactor = 0.0;\n"
1107     "    const float LOG2 = 1.442695;\n"
1108     "    fogFactor = exp2(-fg_FogDensity * fg_FogDensity * pos.z * pos.z * LOG2);\n"
1109     "    fogFactor = clamp(fogFactor, 0.0, 1.0);\n"
1110
1111     "    gl_FragColor = vec4(fg_FogColor.rgb, 1.0 - fogFactor);\n"
1112     "}\n";
1113
1114 osg::Camera* FGRenderer::buildDeferredLightingCamera( flightgear::CameraInfo* info, osg::GraphicsContext* gc )
1115 {
1116     osg::Camera* camera = new osg::Camera;
1117     info->addCamera(flightgear::LIGHTING_CAMERA, camera );
1118
1119     camera->setCullCallback( new FGDeferredRenderingCameraCullCallback( flightgear::LIGHTING_CAMERA, info ) );
1120     camera->setAllowEventFocus(false);
1121     camera->setGraphicsContext(gc);
1122     camera->setViewport(new Viewport);
1123     camera->setName("LightingCamera");
1124     camera->setReferenceFrame(osg::Transform::ABSOLUTE_RF);
1125     camera->setRenderOrder(osg::Camera::POST_RENDER, 50);
1126     camera->setRenderTargetImplementation( osg::Camera::FRAME_BUFFER_OBJECT );
1127     camera->setViewport( new osg::Viewport );
1128     attachBufferToCamera( info, camera, osg::Camera::DEPTH_BUFFER, flightgear::LIGHTING_CAMERA, flightgear::RenderBufferInfo::DEPTH_BUFFER );
1129     attachBufferToCamera( info, camera, osg::Camera::COLOR_BUFFER, flightgear::LIGHTING_CAMERA, flightgear::RenderBufferInfo::LIGHTING_BUFFER );
1130     camera->setDrawBuffer(GL_FRONT);
1131     camera->setReadBuffer(GL_FRONT);
1132     camera->setClearColor( osg::Vec4( 0., 0., 0., 1. ) );
1133     camera->setClearMask( GL_COLOR_BUFFER_BIT );
1134     osg::StateSet* ss = camera->getOrCreateStateSet();
1135     ss->setAttribute( new osg::Depth(osg::Depth::LESS, 0.0, 1.0, false) );
1136
1137     osg::Group* lightingGroup = new osg::Group;
1138
1139     osg::Camera* quadCam1 = new osg::Camera;
1140     quadCam1->setName( "QuadCamera1" );
1141     quadCam1->setClearMask(0);
1142     quadCam1->setAllowEventFocus(false);
1143     quadCam1->setReferenceFrame(osg::Transform::ABSOLUTE_RF);
1144     quadCam1->setRenderOrder(osg::Camera::NESTED_RENDER);
1145     quadCam1->setViewMatrix(osg::Matrix::identity());
1146     quadCam1->setProjectionMatrixAsOrtho2D(-1,1,-1,1);
1147     quadCam1->setComputeNearFarMode(osg::CullSettings::DO_NOT_COMPUTE_NEAR_FAR);
1148     ss = quadCam1->getOrCreateStateSet();
1149     ss->addUniform( _ambientFactor );
1150     ss->addUniform( info->projInverse );
1151     ss->addUniform( info->viewInverse );
1152     ss->addUniform( info->view );
1153     ss->addUniform( _sunDiffuse );
1154     ss->addUniform( _sunSpecular );
1155     ss->addUniform( _sunDirection );
1156     ss->addUniform( _planes );
1157
1158     osg::Geometry* g = osg::createTexturedQuadGeometry( osg::Vec3(-1.,-1.,0.), osg::Vec3(2.,0.,0.), osg::Vec3(0.,2.,0.) );
1159     g->setUseDisplayList(false);
1160     simgear::EffectGeode* eg = new simgear::EffectGeode;
1161     simgear::Effect* effect = simgear::makeEffect("Effects/ambient", true);
1162     if (effect) {
1163         eg->setEffect( effect );
1164     } else {
1165         SG_LOG( SG_VIEW, SG_ALERT, "=> Using default, builtin, Effects/ambient" );
1166         ss = eg->getOrCreateStateSet();
1167         ss->setMode( GL_LIGHTING, osg::StateAttribute::OFF );
1168         ss->setMode( GL_DEPTH_TEST, osg::StateAttribute::OFF );
1169         ss->setTextureAttributeAndModes( 0, info->getBuffer( flightgear::RenderBufferInfo::DEPTH_BUFFER ) );
1170         ss->setTextureAttributeAndModes( 1, info->getBuffer( flightgear::RenderBufferInfo::NORMAL_BUFFER ) );
1171         ss->setTextureAttributeAndModes( 2, info->getBuffer( flightgear::RenderBufferInfo::DIFFUSE_BUFFER ) );
1172         ss->setTextureAttributeAndModes( 3, info->getBuffer( flightgear::RenderBufferInfo::SPEC_EMIS_BUFFER ) );
1173         //ss->setTextureAttributeAndModes( 4, info->gBuffer->aoBuffer[2] );
1174         ss->addUniform( new osg::Uniform( "depth_tex", 0 ) );
1175         ss->addUniform( new osg::Uniform( "normal_tex", 1 ) );
1176         ss->addUniform( new osg::Uniform( "color_tex", 2 ) );
1177         ss->addUniform( new osg::Uniform( "spec_emis_tex", 3 ) );
1178         //ss->addUniform( new osg::Uniform( "ao_tex", 4 ) );
1179         ss->setRenderBinDetails( 0, "RenderBin" );
1180         osg::Program* program = new osg::Program;
1181         program->addShader( new osg::Shader( osg::Shader::VERTEX, ambient_vert_src ) );
1182         program->addShader( new osg::Shader( osg::Shader::FRAGMENT, ambient_frag_src ) );
1183         ss->setAttributeAndModes( program );
1184     }
1185
1186     g->setName( "AmbientQuad" );
1187     eg->setName("AmbientQuad");
1188     eg->setCullingActive(false);
1189     eg->addDrawable(g);
1190     quadCam1->addChild( eg );
1191
1192     g = osg::createTexturedQuadGeometry( osg::Vec3(-1.,-1.,0.), osg::Vec3(2.,0.,0.), osg::Vec3(0.,2.,0.) );
1193     g->setUseDisplayList(false);
1194     g->setName( "SunlightQuad" );
1195     eg = new simgear::EffectGeode;
1196     effect = simgear::makeEffect("Effects/sunlight", true);
1197     if (effect) {
1198         eg->setEffect( effect );
1199     } else {
1200         SG_LOG( SG_VIEW, SG_ALERT, "=> Using default, builtin, Effects/sunlight" );
1201         ss = eg->getOrCreateStateSet();
1202         ss->setMode( GL_LIGHTING, osg::StateAttribute::OFF );
1203         ss->setMode( GL_DEPTH_TEST, osg::StateAttribute::OFF );
1204         ss->setAttributeAndModes( new osg::BlendFunc( osg::BlendFunc::ONE, osg::BlendFunc::ONE ) );
1205         ss->setTextureAttribute( 0, info->getBuffer( flightgear::RenderBufferInfo::DEPTH_BUFFER ) );
1206         ss->setTextureAttribute( 1, info->getBuffer( flightgear::RenderBufferInfo::NORMAL_BUFFER ) );
1207         ss->setTextureAttribute( 2, info->getBuffer( flightgear::RenderBufferInfo::DIFFUSE_BUFFER ) );
1208         ss->setTextureAttribute( 3, info->getBuffer( flightgear::RenderBufferInfo::SPEC_EMIS_BUFFER ) );
1209         ss->setTextureAttribute( 4, info->getBuffer( flightgear::RenderBufferInfo::SHADOW_BUFFER ) );
1210         ss->addUniform( new osg::Uniform( "depth_tex", 0 ) );
1211         ss->addUniform( new osg::Uniform( "normal_tex", 1 ) );
1212         ss->addUniform( new osg::Uniform( "color_tex", 2 ) );
1213         ss->addUniform( new osg::Uniform( "spec_emis_tex", 3 ) );
1214         ss->addUniform( new osg::Uniform( "shadow_tex", 4 ) );
1215         ss->setRenderBinDetails( 1, "RenderBin" );
1216         osg::Program* program = new osg::Program;
1217         program->addShader( new osg::Shader( osg::Shader::VERTEX, sunlight_vert_src ) );
1218         program->addShader( new osg::Shader( osg::Shader::FRAGMENT, sunlight_frag_src ) );
1219         ss->setAttributeAndModes( program );
1220     }
1221     eg->setName("SunlightQuad");
1222     eg->setCullingActive(false);
1223     eg->addDrawable(g);
1224     quadCam1->addChild( eg );
1225
1226     osg::Camera* lightCam = new osg::Camera;
1227     ss = lightCam->getOrCreateStateSet();
1228     ss->addUniform( _planes );
1229     ss->addUniform( info->bufferSize );
1230     lightCam->setName( "LightCamera" );
1231     lightCam->setClearMask(0);
1232     lightCam->setAllowEventFocus(false);
1233     lightCam->setReferenceFrame(osg::Transform::RELATIVE_RF);
1234     lightCam->setRenderOrder(osg::Camera::NESTED_RENDER,1);
1235     lightCam->setViewMatrix(osg::Matrix::identity());
1236     lightCam->setProjectionMatrix(osg::Matrix::identity());
1237     lightCam->setComputeNearFarMode(osg::CullSettings::DO_NOT_COMPUTE_NEAR_FAR);
1238     lightCam->setCullMask( simgear::MODELLIGHT_BIT );
1239     lightCam->setInheritanceMask( osg::CullSettings::ALL_VARIABLES & ~osg::CullSettings::CULL_MASK );
1240     lightCam->addChild( mDeferredRealRoot.get() );
1241
1242
1243     osg::Camera* quadCam2 = new osg::Camera;
1244     quadCam2->setName( "QuadCamera1" );
1245     quadCam2->setClearMask(0);
1246     quadCam2->setAllowEventFocus(false);
1247     quadCam2->setReferenceFrame(osg::Transform::ABSOLUTE_RF);
1248     quadCam2->setRenderOrder(osg::Camera::NESTED_RENDER,2);
1249     quadCam2->setViewMatrix(osg::Matrix::identity());
1250     quadCam2->setProjectionMatrixAsOrtho2D(-1,1,-1,1);
1251     quadCam2->setComputeNearFarMode(osg::CullSettings::DO_NOT_COMPUTE_NEAR_FAR);
1252     ss = quadCam2->getOrCreateStateSet();
1253     ss->addUniform( _ambientFactor );
1254     ss->addUniform( info->projInverse );
1255     ss->addUniform( info->viewInverse );
1256     ss->addUniform( info->view );
1257     ss->addUniform( _sunDiffuse );
1258     ss->addUniform( _sunSpecular );
1259     ss->addUniform( _sunDirection );
1260     ss->addUniform( _fogColor );
1261     ss->addUniform( _fogDensity );
1262     ss->addUniform( _planes );
1263
1264     g = osg::createTexturedQuadGeometry( osg::Vec3(-1.,-1.,0.), osg::Vec3(2.,0.,0.), osg::Vec3(0.,2.,0.) );
1265     g->setUseDisplayList(false);
1266     g->setName( "FogQuad" );
1267     eg = new simgear::EffectGeode;
1268     effect = simgear::makeEffect("Effects/fog", true);
1269     if (effect) {
1270         eg->setEffect( effect );
1271     } else {
1272         SG_LOG( SG_VIEW, SG_ALERT, "=> Using default, builtin, Effects/fog" );
1273         ss = eg->getOrCreateStateSet();
1274         ss->setMode( GL_LIGHTING, osg::StateAttribute::OFF );
1275         ss->setMode( GL_DEPTH_TEST, osg::StateAttribute::OFF );
1276         ss->setAttributeAndModes( new osg::BlendFunc( osg::BlendFunc::SRC_ALPHA, osg::BlendFunc::ONE_MINUS_SRC_ALPHA ) );
1277         ss->setTextureAttributeAndModes( 0, info->getBuffer( flightgear::RenderBufferInfo::DEPTH_BUFFER ) );
1278         ss->setTextureAttributeAndModes( 1, info->getBuffer( flightgear::RenderBufferInfo::NORMAL_BUFFER ) );
1279         ss->setTextureAttributeAndModes( 2, info->getBuffer( flightgear::RenderBufferInfo::DIFFUSE_BUFFER ) );
1280         ss->setTextureAttributeAndModes( 3, info->getBuffer( flightgear::RenderBufferInfo::SPEC_EMIS_BUFFER ) );
1281         ss->addUniform( new osg::Uniform( "depth_tex", 0 ) );
1282         ss->addUniform( new osg::Uniform( "normal_tex", 1 ) );
1283         ss->addUniform( new osg::Uniform( "color_tex", 2 ) );
1284         ss->addUniform( new osg::Uniform( "spec_emis_tex", 3 ) );
1285         ss->setRenderBinDetails( 10000, "RenderBin" );
1286         osg::Program* program = new osg::Program;
1287         program->addShader( new osg::Shader( osg::Shader::VERTEX, fog_vert_src ) );
1288         program->addShader( new osg::Shader( osg::Shader::FRAGMENT, fog_frag_src ) );
1289         ss->setAttributeAndModes( program );
1290     }
1291     eg->setName("FogQuad");
1292     eg->setCullingActive(false);
1293     eg->addDrawable(g);
1294     quadCam2->addChild( eg );
1295
1296     lightingGroup->addChild( _sky->getPreRoot() );
1297     lightingGroup->addChild( _sky->getCloudRoot() );
1298     lightingGroup->addChild( quadCam1 );
1299     lightingGroup->addChild( lightCam );
1300     lightingGroup->addChild( quadCam2 );
1301
1302     camera->addChild( lightingGroup );
1303
1304     return camera;
1305 }
1306
1307 flightgear::CameraInfo*
1308 FGRenderer::buildDeferredPipeline(flightgear::CameraGroup* cgroup, unsigned flags, osg::Camera* camera,
1309                                     const osg::Matrix& view,
1310                                     const osg::Matrix& projection,
1311                                     osg::GraphicsContext* gc)
1312 {
1313     CameraInfo* info = new CameraInfo(flags);
1314         buildDeferredBuffers( info, _shadowMapSize, !fgGetBool("/sim/rendering/no-16bit-buffer", false ) );
1315
1316     osg::Camera* geometryCamera = buildDeferredGeometryCamera( info, gc );
1317     cgroup->getViewer()->addSlave(geometryCamera, false);
1318     installCullVisitor(geometryCamera);
1319     int slaveIndex = cgroup->getViewer()->getNumSlaves() - 1;
1320     info->getRenderStageInfo(GEOMETRY_CAMERA).slaveIndex = slaveIndex;
1321
1322     Camera* shadowCamera = buildDeferredShadowCamera( info, gc );
1323     cgroup->getViewer()->addSlave(shadowCamera, false);
1324     installCullVisitor(shadowCamera);
1325     slaveIndex = cgroup->getViewer()->getNumSlaves() - 1;
1326     info->getRenderStageInfo(SHADOW_CAMERA).slaveIndex = slaveIndex;
1327
1328     osg::Camera* lightingCamera = buildDeferredLightingCamera( info, gc );
1329     cgroup->getViewer()->addSlave(lightingCamera, false);
1330     installCullVisitor(lightingCamera);
1331     slaveIndex = cgroup->getViewer()->getNumSlaves() - 1;
1332     info->getRenderStageInfo(LIGHTING_CAMERA).slaveIndex = slaveIndex;
1333
1334     camera->setName( "DisplayCamera" );
1335     camera->setCullCallback( new FGDeferredRenderingCameraCullCallback( flightgear::DISPLAY_CAMERA, info ) );
1336     camera->setReferenceFrame(Transform::ABSOLUTE_RF);
1337     camera->setAllowEventFocus(false);
1338     osg::Geometry* g = osg::createTexturedQuadGeometry( osg::Vec3(-1.,-1.,0.), osg::Vec3(2.,0.,0.), osg::Vec3(0.,2.,0.) );
1339     g->setUseDisplayList(false); //DEBUG
1340     simgear::EffectGeode* eg = new simgear::EffectGeode;
1341     simgear::Effect* effect = simgear::makeEffect("Effects/display", true);
1342     if (!effect) {
1343         SG_LOG(SG_VIEW, SG_ALERT, "Effects/display not found");
1344         return 0;
1345     }
1346     eg->setEffect(effect);
1347     eg->setCullingActive(false);
1348     eg->addDrawable(g);
1349     camera->setViewMatrix(osg::Matrix::identity());
1350     camera->setProjectionMatrixAsOrtho2D(-1,1,-1,1);
1351     camera->addChild(eg);
1352
1353     cgroup->getViewer()->addSlave(camera, false);
1354     installCullVisitor(camera);
1355     slaveIndex = cgroup->getViewer()->getNumSlaves() - 1;
1356     info->addCamera( DISPLAY_CAMERA, camera, slaveIndex, true );
1357     camera->setRenderOrder(Camera::POST_RENDER, 99+slaveIndex); //FIXME
1358     cgroup->addCamera(info);
1359     return info;
1360 }
1361
1362
1363 void
1364 FGRenderer::setupView( void )
1365 {
1366     osgViewer::Viewer* viewer = globals->get_renderer()->getViewer();
1367     osg::initNotifyLevel();
1368
1369     // The number of polygon-offset "units" to place between layers.  In
1370     // principle, one is supposed to be enough.  In practice, I find that
1371     // my hardware/driver requires many more.
1372     osg::PolygonOffset::setUnitsMultiplier(1);
1373     osg::PolygonOffset::setFactorMultiplier(1);
1374
1375     // Go full screen if requested ...
1376     if ( fgGetBool("/sim/startup/fullscreen") )
1377         fgOSFullScreen();
1378
1379 // build the sky
1380     // The sun and moon diameters are scaled down numbers of the
1381     // actual diameters. This was needed to fit both the sun and the
1382     // moon within the distance to the far clip plane.
1383     // Moon diameter:    3,476 kilometers
1384     // Sun diameter: 1,390,000 kilometers
1385     _sky->build( 80000.0, 80000.0,
1386                   463.3, 361.8,
1387                   *globals->get_ephem(),
1388                   fgGetNode("/environment", true));
1389
1390     viewer->getCamera()
1391         ->setComputeNearFarMode(osg::CullSettings::DO_NOT_COMPUTE_NEAR_FAR);
1392
1393     osg::StateSet* stateSet = mRoot->getOrCreateStateSet();
1394
1395     stateSet->setMode(GL_LIGHTING, osg::StateAttribute::OFF);
1396
1397     stateSet->setAttribute(new osg::Depth(osg::Depth::LESS));
1398     stateSet->setMode(GL_DEPTH_TEST, osg::StateAttribute::OFF);
1399
1400     stateSet->setAttribute(new osg::AlphaFunc(osg::AlphaFunc::GREATER, 0.01));
1401     stateSet->setMode(GL_ALPHA_TEST, osg::StateAttribute::OFF);
1402     stateSet->setAttribute(new osg::BlendFunc);
1403     stateSet->setMode(GL_BLEND, osg::StateAttribute::OFF);
1404
1405     stateSet->setMode(GL_FOG, osg::StateAttribute::OFF);
1406
1407     // this will be set below
1408     stateSet->setMode(GL_NORMALIZE, osg::StateAttribute::OFF);
1409
1410     osg::Material* material = new osg::Material;
1411     stateSet->setAttribute(material);
1412
1413     stateSet->setTextureAttribute(0, new osg::TexEnv);
1414     stateSet->setTextureMode(0, GL_TEXTURE_2D, osg::StateAttribute::OFF);
1415
1416     osg::Hint* hint = new osg::Hint(GL_FOG_HINT, GL_DONT_CARE);
1417     hint->setUpdateCallback(new FGHintUpdateCallback("/sim/rendering/fog"));
1418     stateSet->setAttribute(hint);
1419     hint = new osg::Hint(GL_POLYGON_SMOOTH_HINT, GL_DONT_CARE);
1420     hint->setUpdateCallback(new FGHintUpdateCallback("/sim/rendering/polygon-smooth"));
1421     stateSet->setAttribute(hint);
1422     hint = new osg::Hint(GL_LINE_SMOOTH_HINT, GL_DONT_CARE);
1423     hint->setUpdateCallback(new FGHintUpdateCallback("/sim/rendering/line-smooth"));
1424     stateSet->setAttribute(hint);
1425     hint = new osg::Hint(GL_POINT_SMOOTH_HINT, GL_DONT_CARE);
1426     hint->setUpdateCallback(new FGHintUpdateCallback("/sim/rendering/point-smooth"));
1427     stateSet->setAttribute(hint);
1428     hint = new osg::Hint(GL_PERSPECTIVE_CORRECTION_HINT, GL_DONT_CARE);
1429     hint->setUpdateCallback(new FGHintUpdateCallback("/sim/rendering/perspective-correction"));
1430     stateSet->setAttribute(hint);
1431
1432     osg::Group* sceneGroup = new osg::Group;
1433     sceneGroup->addChild(globals->get_scenery()->get_scene_graph());
1434     sceneGroup->setNodeMask(~simgear::BACKGROUND_BIT);
1435
1436     //sceneGroup->addChild(thesky->getCloudRoot());
1437
1438     stateSet = sceneGroup->getOrCreateStateSet();
1439     stateSet->setMode(GL_DEPTH_TEST, osg::StateAttribute::ON);
1440
1441     // need to update the light on every frame
1442     // OSG LightSource objects are rather confusing. OSG only supports
1443     // the 10 lights specified by OpenGL itself; if more than one
1444     // LightSource in the scene graph have the same light number, it's
1445     // indeterminate which values will be used to render geometry that
1446     // has that light number enabled. Also, adding children to a
1447     // LightSource is just a shortcut for setting up a state set that
1448     // has the corresponding OpenGL light enabled: a LightSource will
1449     // affect geometry anywhere in the scene graph that has its light
1450     // number enabled in a state set.
1451     LightSource* lightSource = new LightSource;
1452     lightSource->getLight()->setDataVariance(Object::DYNAMIC);
1453     // relative because of CameraView being just a clever transform node
1454     lightSource->setReferenceFrame(osg::LightSource::RELATIVE_RF);
1455     lightSource->setLocalStateSetModes(osg::StateAttribute::ON);
1456     lightSource->setUpdateCallback(new FGLightSourceUpdateCallback);
1457     mRealRoot->addChild(lightSource);
1458     // we need a white diffuse light for the phase of the moon
1459     osg::LightSource* sunLight = new osg::LightSource;
1460     sunLight->getLight()->setDataVariance(Object::DYNAMIC);
1461     sunLight->getLight()->setLightNum(1);
1462     sunLight->setUpdateCallback(new FGLightSourceUpdateCallback(true));
1463     sunLight->setReferenceFrame(osg::LightSource::RELATIVE_RF);
1464     sunLight->setLocalStateSetModes(osg::StateAttribute::ON);
1465
1466     // Hang a StateSet above the sky subgraph in order to turn off
1467     // light 0
1468     Group* skyGroup = new Group;
1469     StateSet* skySS = skyGroup->getOrCreateStateSet();
1470     skySS->setMode(GL_LIGHT0, StateAttribute::OFF);
1471     skyGroup->addChild(_sky->getPreRoot());
1472     sunLight->addChild(skyGroup);
1473     mRoot->addChild(sceneGroup);
1474     mRoot->addChild(sunLight);
1475
1476     // Clouds are added to the scene graph later
1477     stateSet = globals->get_scenery()->get_scene_graph()->getOrCreateStateSet();
1478     stateSet->setMode(GL_ALPHA_TEST, osg::StateAttribute::ON);
1479     stateSet->setMode(GL_LIGHTING, osg::StateAttribute::ON);
1480     stateSet->setMode(GL_DEPTH_TEST, osg::StateAttribute::ON);
1481
1482     // enable disable specular highlights.
1483     // is the place where we might plug in an other fragment shader ...
1484     osg::LightModel* lightModel = new osg::LightModel;
1485     lightModel->setUpdateCallback(new FGLightModelUpdateCallback);
1486     stateSet->setAttribute(lightModel);
1487
1488     // switch to enable wireframe
1489     osg::PolygonMode* polygonMode = new osg::PolygonMode;
1490     polygonMode->setUpdateCallback(new FGWireFrameModeUpdateCallback);
1491     stateSet->setAttributeAndModes(polygonMode);
1492
1493     // scene fog handling
1494     osg::Fog* fog = new osg::Fog;
1495     fog->setUpdateCallback(new FGFogUpdateCallback);
1496     stateSet->setAttributeAndModes(fog);
1497     stateSet->setUpdateCallback(new FGFogEnableUpdateCallback);
1498
1499     // plug in the GUI
1500     osg::Camera* guiCamera = getGUICamera(CameraGroup::getDefault());
1501     if (guiCamera) {
1502
1503         osg::Geode* geode = new osg::Geode;
1504         geode->addDrawable(new SGPuDrawable);
1505         geode->addDrawable(new SGHUDDrawable);
1506         guiCamera->addChild(geode);
1507
1508         panelSwitch = new osg::Switch;
1509         osg::StateSet* stateSet = panelSwitch->getOrCreateStateSet();
1510         stateSet->setRenderBinDetails(1000, "RenderBin");
1511
1512         // speed optimization?
1513         stateSet->setMode(GL_CULL_FACE, osg::StateAttribute::OFF);
1514         stateSet->setAttribute(new osg::BlendFunc(osg::BlendFunc::SRC_ALPHA, osg::BlendFunc::ONE_MINUS_SRC_ALPHA));
1515         stateSet->setMode(GL_BLEND, osg::StateAttribute::ON);
1516         stateSet->setMode(GL_FOG, osg::StateAttribute::OFF);
1517         stateSet->setMode(GL_DEPTH_TEST, osg::StateAttribute::OFF);
1518
1519
1520         panelSwitch->setUpdateCallback(new FGPanelSwitchCallback);
1521         panelChanged();
1522
1523         guiCamera->addChild(panelSwitch.get());
1524     }
1525
1526     osg::Switch* sw = new osg::Switch;
1527     sw->setUpdateCallback(new FGScenerySwitchCallback);
1528     sw->addChild(mRoot.get());
1529     mRealRoot->addChild(sw);
1530     // The clouds are attached directly to the scene graph root
1531     // because, in theory, they don't want the same default state set
1532     // as the rest of the scene. This may not be true in practice.
1533         if ( _classicalRenderer ) {
1534                 mRealRoot->addChild(_sky->getCloudRoot());
1535                 mRealRoot->addChild(FGCreateRedoutNode());
1536         }
1537     // Attach empty program to the scene root so that shader programs
1538     // don't leak into state sets (effects) that shouldn't have one.
1539     stateSet = mRealRoot->getOrCreateStateSet();
1540     stateSet->setAttributeAndModes(new osg::Program, osg::StateAttribute::ON);
1541
1542         mDeferredRealRoot->addChild( mRealRoot.get() );
1543 }
1544
1545 void FGRenderer::panelChanged()
1546 {
1547     if (!panelSwitch) {
1548         return;
1549     }
1550
1551     osg::Node* n = FGPanelNode::createNode(globals->get_current_panel());
1552     if (panelSwitch->getNumChildren()) {
1553         panelSwitch->setChild(0, n);
1554     } else {
1555         panelSwitch->addChild(n);
1556     }
1557 }
1558
1559 // Update all Visuals (redraws anything graphics related)
1560 void
1561 FGRenderer::update( ) {
1562     if (!(_scenery_loaded->getBoolValue() ||
1563            _scenery_override->getBoolValue()))
1564     {
1565         _splash_alpha->setDoubleValue(1.0);
1566         return;
1567     }
1568     osgViewer::Viewer* viewer = globals->get_renderer()->getViewer();
1569
1570     if (_splash_alpha->getDoubleValue()>0.0)
1571     {
1572         // Fade out the splash screen
1573         const double fade_time = 0.8;
1574         const double fade_steps_per_sec = 20;
1575         double delay_time = SGMiscd::min(fade_time/fade_steps_per_sec,
1576                                          (SGTimeStamp::now() - _splash_time).toSecs());
1577         _splash_time = SGTimeStamp::now();
1578         double sAlpha = _splash_alpha->getDoubleValue();
1579         sAlpha -= SGMiscd::max(0.0,delay_time/fade_time);
1580         FGScenerySwitchCallback::scenery_enabled = (sAlpha<1.0);
1581         _splash_alpha->setDoubleValue((sAlpha < 0) ? 0.0 : sAlpha);
1582     }
1583
1584     FGLight *l = static_cast<FGLight*>(globals->get_subsystem("lighting"));
1585         if (!_classicalRenderer ) {
1586                 _ambientFactor->set( toOsg(l->scene_ambient()) );
1587                 _sunDiffuse->set( toOsg(l->scene_diffuse()) );
1588                 _sunSpecular->set( toOsg(l->scene_specular()) );
1589                 _sunDirection->set( osg::Vec3f(l->sun_vec()[0], l->sun_vec()[1], l->sun_vec()[2]) );
1590         }
1591
1592     // update fog params
1593     double actual_visibility;
1594     if (_cloud_status->getBoolValue()) {
1595         actual_visibility = _sky->get_visibility();
1596     } else {
1597         actual_visibility = _visibility_m->getDoubleValue();
1598     }
1599
1600     // idle_state is now 1000 meaning we've finished all our
1601     // initializations and are running the main loop, so this will
1602     // now work without seg faulting the system.
1603
1604     FGViewer *current__view = globals->get_current_view();
1605     // Force update of center dependent values ...
1606     current__view->set_dirty();
1607
1608     osg::Camera *camera = viewer->getCamera();
1609
1610     bool skyblend = _skyblend->getBoolValue();
1611     if ( skyblend ) {
1612
1613         if ( _textures->getBoolValue() ) {
1614             SGVec4f clearColor(l->adj_fog_color());
1615             camera->setClearColor(toOsg(clearColor));
1616         }
1617     } else {
1618         SGVec4f clearColor(l->sky_color());
1619         camera->setClearColor(toOsg(clearColor));
1620     }
1621
1622     // update fog params if visibility has changed
1623     double visibility_meters = _visibility_m->getDoubleValue();
1624     _sky->set_visibility(visibility_meters);
1625
1626     double altitude_m = _altitude_ft->getDoubleValue() * SG_FEET_TO_METER;
1627     _sky->modify_vis( altitude_m, 0.0 /* time factor, now unused */);
1628
1629     // update the sky dome
1630     if ( skyblend ) {
1631
1632         // The sun and moon distances are scaled down versions
1633         // of the actual distance to get both the moon and the sun
1634         // within the range of the far clip plane.
1635         // Moon distance:    384,467 kilometers
1636         // Sun distance: 150,000,000 kilometers
1637
1638         double sun_horiz_eff, moon_horiz_eff;
1639         if (_horizon_effect->getBoolValue()) {
1640             sun_horiz_eff
1641                 = 0.67 + pow(osg::clampAbove(0.5 + cos(l->get_sun_angle()),
1642                                              0.0),
1643                              0.33) / 3.0;
1644             moon_horiz_eff
1645                 = 0.67 + pow(osg::clampAbove(0.5 + cos(l->get_moon_angle()),
1646                                              0.0),
1647                              0.33)/3.0;
1648         } else {
1649            sun_horiz_eff = moon_horiz_eff = 1.0;
1650         }
1651
1652         SGSkyState sstate;
1653         sstate.pos       = current__view->getViewPosition();
1654         sstate.pos_geod  = current__view->getPosition();
1655         sstate.ori       = current__view->getViewOrientation();
1656         sstate.spin      = l->get_sun_rotation();
1657         sstate.gst       = globals->get_time_params()->getGst();
1658         sstate.sun_dist  = 50000.0 * sun_horiz_eff;
1659         sstate.moon_dist = 40000.0 * moon_horiz_eff;
1660         sstate.sun_angle = l->get_sun_angle();
1661
1662         SGSkyColor scolor;
1663         scolor.sky_color   = SGVec3f(l->sky_color().data());
1664         scolor.adj_sky_color = SGVec3f(l->adj_sky_color().data());
1665         scolor.fog_color   = SGVec3f(l->adj_fog_color().data());
1666         scolor.cloud_color = SGVec3f(l->cloud_color().data());
1667         scolor.sun_angle   = l->get_sun_angle();
1668         scolor.moon_angle  = l->get_moon_angle();
1669
1670         double delta_time_sec = _sim_delta_sec->getDoubleValue();
1671         _sky->reposition( sstate, *globals->get_ephem(), delta_time_sec );
1672         _sky->repaint( scolor, *globals->get_ephem() );
1673
1674             //OSGFIXME
1675 //         shadows->setupShadows(
1676 //           current__view->getLongitude_deg(),
1677 //           current__view->getLatitude_deg(),
1678 //           globals->get_time_params()->getGst(),
1679 //           globals->get_ephem()->getSunRightAscension(),
1680 //           globals->get_ephem()->getSunDeclination(),
1681 //           l->get_sun_angle());
1682
1683     }
1684
1685 //     sgEnviro.setLight(l->adj_fog_color());
1686 //     sgEnviro.startOfFrame(current__view->get_view_pos(),
1687 //         current__view->get_world_up(),
1688 //         current__view->getLongitude_deg(),
1689 //         current__view->getLatitude_deg(),
1690 //         current__view->getAltitudeASL_ft() * SG_FEET_TO_METER,
1691 //         delta_time_sec);
1692
1693     // OSGFIXME
1694 //     sgEnviro.drawLightning();
1695
1696 //        double current_view_origin_airspeed_horiz_kt =
1697 //         fgGetDouble("/velocities/airspeed-kt", 0.0)
1698 //                        * cos( fgGetDouble("/orientation/pitch-deg", 0.0)
1699 //                                * SGD_DEGREES_TO_RADIANS);
1700
1701     // OSGFIXME
1702 //     if( is_internal )
1703 //         shadows->endOfFrame();
1704
1705     // need to call the update visitor once
1706     mFrameStamp->setCalendarTime(*globals->get_time_params()->getGmt());
1707     mUpdateVisitor->setViewData(current__view->getViewPosition(),
1708                                 current__view->getViewOrientation());
1709     SGVec3f direction(l->sun_vec()[0], l->sun_vec()[1], l->sun_vec()[2]);
1710     mUpdateVisitor->setLight(direction, l->scene_ambient(),
1711                              l->scene_diffuse(), l->scene_specular(),
1712                              l->adj_fog_color(),
1713                              l->get_sun_angle()*SGD_RADIANS_TO_DEGREES);
1714     mUpdateVisitor->setVisibility(actual_visibility);
1715     simgear::GroundLightManager::instance()->update(mUpdateVisitor.get());
1716     osg::Node::NodeMask cullMask = ~simgear::LIGHTS_BITS & ~simgear::PICK_BIT;
1717     cullMask |= simgear::GroundLightManager::instance()
1718         ->getLightNodeMask(mUpdateVisitor.get());
1719     if (_panel_hotspots->getBoolValue())
1720         cullMask |= simgear::PICK_BIT;
1721     CameraGroup::getDefault()->setCameraCullMasks(cullMask);
1722         if ( !_classicalRenderer ) {
1723                 _fogColor->set( toOsg( l->adj_fog_color() ) );
1724                 _fogDensity->set( float( mUpdateVisitor->getFogExp2Density() ) );
1725         }
1726 }
1727
1728 void
1729 FGRenderer::resize( int width, int height )
1730 {
1731     int curWidth = _xsize->getIntValue(),
1732         curHeight = _ysize->getIntValue();
1733     SG_LOG(SG_VIEW, SG_DEBUG, "FGRenderer::resize: new size " << width << " x " << height);
1734     if ((curHeight != height) || (curWidth != width)) {
1735     // must guard setting these, or PLIB-PUI fails with too many live interfaces
1736         _xsize->setIntValue(width);
1737         _ysize->setIntValue(height);
1738     }
1739 }
1740
1741 bool
1742 FGRenderer::pick(std::vector<SGSceneryPick>& pickList,
1743                  const osgGA::GUIEventAdapter* ea)
1744 {
1745     // wipe out the return ...
1746     pickList.clear();
1747     typedef osgUtil::LineSegmentIntersector::Intersections Intersections;
1748     Intersections intersections;
1749
1750     if (!computeIntersections(CameraGroup::getDefault(), ea, intersections))
1751         return false;
1752     for (Intersections::iterator hit = intersections.begin(),
1753              e = intersections.end();
1754          hit != e;
1755          ++hit) {
1756         const osg::NodePath& np = hit->nodePath;
1757         osg::NodePath::const_reverse_iterator npi;
1758         for (npi = np.rbegin(); npi != np.rend(); ++npi) {
1759             SGSceneUserData* ud = SGSceneUserData::getSceneUserData(*npi);
1760             if (!ud)
1761                 continue;
1762             for (unsigned i = 0; i < ud->getNumPickCallbacks(); ++i) {
1763                 SGPickCallback* pickCallback = ud->getPickCallback(i);
1764                 if (!pickCallback)
1765                     continue;
1766                 SGSceneryPick sceneryPick;
1767                 sceneryPick.info.local = toSG(hit->getLocalIntersectPoint());
1768                 sceneryPick.info.wgs84 = toSG(hit->getWorldIntersectPoint());
1769                 sceneryPick.callback = pickCallback;
1770                 pickList.push_back(sceneryPick);
1771             }
1772         }
1773     }
1774     return !pickList.empty();
1775 }
1776
1777 void
1778 FGRenderer::setViewer(osgViewer::Viewer* viewer_)
1779 {
1780     viewer = viewer_;
1781 }
1782
1783 void
1784 FGRenderer::setEventHandler(FGEventHandler* eventHandler_)
1785 {
1786     eventHandler = eventHandler_;
1787 }
1788
1789 void
1790 FGRenderer::addCamera(osg::Camera* camera, bool useSceneData)
1791 {
1792     mRealRoot->addChild(camera);
1793 }
1794
1795 void
1796 FGRenderer::setPlanes( double zNear, double zFar )
1797 {
1798         _planes->set( osg::Vec3f( - zFar, - zFar * zNear, zFar - zNear ) );
1799 }
1800
1801 bool
1802 fgDumpSceneGraphToFile(const char* filename)
1803 {
1804     return osgDB::writeNodeFile(*mRealRoot.get(), filename);
1805 }
1806
1807 bool
1808 fgDumpTerrainBranchToFile(const char* filename)
1809 {
1810     return osgDB::writeNodeFile( *globals->get_scenery()->get_terrain_branch(),
1811                                  filename );
1812 }
1813
1814 // For debugging
1815 bool
1816 fgDumpNodeToFile(osg::Node* node, const char* filename)
1817 {
1818     return osgDB::writeNodeFile(*node, filename);
1819 }
1820
1821 namespace flightgear
1822 {
1823 using namespace osg;
1824
1825 class VisibleSceneInfoVistor : public NodeVisitor, CullStack
1826 {
1827 public:
1828     VisibleSceneInfoVistor()
1829         : NodeVisitor(CULL_VISITOR, TRAVERSE_ACTIVE_CHILDREN)
1830     {
1831         setCullingMode(CullSettings::SMALL_FEATURE_CULLING
1832                        | CullSettings::VIEW_FRUSTUM_CULLING);
1833         setComputeNearFarMode(CullSettings::DO_NOT_COMPUTE_NEAR_FAR);
1834     }
1835
1836     VisibleSceneInfoVistor(const VisibleSceneInfoVistor& rhs)
1837     {
1838     }
1839
1840     META_NodeVisitor("flightgear","VisibleSceneInfoVistor")
1841
1842     typedef std::map<const std::string,int> InfoMap;
1843
1844     void getNodeInfo(Node* node)
1845     {
1846         const char* typeName = typeid(*node).name();
1847         classInfo[typeName]++;
1848         const std::string& nodeName = node->getName();
1849         if (!nodeName.empty())
1850             nodeInfo[nodeName]++;
1851     }
1852
1853     void dumpInfo()
1854     {
1855         using namespace std;
1856         typedef vector<InfoMap::iterator> FreqVector;
1857         cout << "class info:\n";
1858         FreqVector classes;
1859         for (InfoMap::iterator itr = classInfo.begin(), end = classInfo.end();
1860              itr != end;
1861              ++itr)
1862             classes.push_back(itr);
1863         sort(classes.begin(), classes.end(), freqComp);
1864         for (FreqVector::iterator itr = classes.begin(), end = classes.end();
1865              itr != end;
1866              ++itr) {
1867             cout << (*itr)->first << " " << (*itr)->second << "\n";
1868         }
1869         cout << "\nnode info:\n";
1870         FreqVector nodes;
1871         for (InfoMap::iterator itr = nodeInfo.begin(), end = nodeInfo.end();
1872              itr != end;
1873              ++itr)
1874             nodes.push_back(itr);
1875
1876         sort (nodes.begin(), nodes.end(), freqComp);
1877         for (FreqVector::iterator itr = nodes.begin(), end = nodes.end();
1878              itr != end;
1879              ++itr) {
1880             cout << (*itr)->first << " " << (*itr)->second << "\n";
1881         }
1882         cout << endl;
1883     }
1884
1885     void doTraversal(Camera* camera, Node* root, Viewport* viewport)
1886     {
1887         ref_ptr<RefMatrix> projection
1888             = createOrReuseMatrix(camera->getProjectionMatrix());
1889         ref_ptr<RefMatrix> mv = createOrReuseMatrix(camera->getViewMatrix());
1890         if (!viewport)
1891             viewport = camera->getViewport();
1892         if (viewport)
1893             pushViewport(viewport);
1894         pushProjectionMatrix(projection.get());
1895         pushModelViewMatrix(mv.get(), Transform::ABSOLUTE_RF);
1896         root->accept(*this);
1897         popModelViewMatrix();
1898         popProjectionMatrix();
1899         if (viewport)
1900             popViewport();
1901         dumpInfo();
1902     }
1903
1904     void apply(Node& node)
1905     {
1906         if (isCulled(node))
1907             return;
1908         pushCurrentMask();
1909         getNodeInfo(&node);
1910         traverse(node);
1911         popCurrentMask();
1912     }
1913     void apply(Group& node)
1914     {
1915         if (isCulled(node))
1916             return;
1917         pushCurrentMask();
1918         getNodeInfo(&node);
1919         traverse(node);
1920         popCurrentMask();
1921     }
1922
1923     void apply(Transform& node)
1924     {
1925         if (isCulled(node))
1926             return;
1927         pushCurrentMask();
1928         ref_ptr<RefMatrix> matrix = createOrReuseMatrix(*getModelViewMatrix());
1929         node.computeLocalToWorldMatrix(*matrix,this);
1930         pushModelViewMatrix(matrix.get(), node.getReferenceFrame());
1931         getNodeInfo(&node);
1932         traverse(node);
1933         popModelViewMatrix();
1934         popCurrentMask();
1935     }
1936
1937     void apply(Camera& camera)
1938     {
1939         // Save current cull settings
1940         CullSettings saved_cull_settings(*this);
1941
1942         // set cull settings from this Camera
1943         setCullSettings(camera);
1944         // inherit the settings from above
1945         inheritCullSettings(saved_cull_settings, camera.getInheritanceMask());
1946
1947         // set the cull mask.
1948         unsigned int savedTraversalMask = getTraversalMask();
1949         bool mustSetCullMask = (camera.getInheritanceMask()
1950                                 & osg::CullSettings::CULL_MASK) == 0;
1951         if (mustSetCullMask)
1952             setTraversalMask(camera.getCullMask());
1953
1954         osg::RefMatrix* projection = 0;
1955         osg::RefMatrix* modelview = 0;
1956
1957         if (camera.getReferenceFrame()==osg::Transform::RELATIVE_RF) {
1958             if (camera.getTransformOrder()==osg::Camera::POST_MULTIPLY) {
1959                 projection = createOrReuseMatrix(*getProjectionMatrix()
1960                                                  *camera.getProjectionMatrix());
1961                 modelview = createOrReuseMatrix(*getModelViewMatrix()
1962                                                 * camera.getViewMatrix());
1963             }
1964             else {              // pre multiply
1965                 projection = createOrReuseMatrix(camera.getProjectionMatrix()
1966                                                  * (*getProjectionMatrix()));
1967                 modelview = createOrReuseMatrix(camera.getViewMatrix()
1968                                                 * (*getModelViewMatrix()));
1969             }
1970         } else {
1971             // an absolute reference frame
1972             projection = createOrReuseMatrix(camera.getProjectionMatrix());
1973             modelview = createOrReuseMatrix(camera.getViewMatrix());
1974         }
1975         if (camera.getViewport())
1976             pushViewport(camera.getViewport());
1977
1978         pushProjectionMatrix(projection);
1979         pushModelViewMatrix(modelview, camera.getReferenceFrame());
1980
1981         traverse(camera);
1982
1983         // restore the previous model view matrix.
1984         popModelViewMatrix();
1985
1986         // restore the previous model view matrix.
1987         popProjectionMatrix();
1988
1989         if (camera.getViewport()) popViewport();
1990
1991         // restore the previous traversal mask settings
1992         if (mustSetCullMask)
1993             setTraversalMask(savedTraversalMask);
1994
1995         // restore the previous cull settings
1996         setCullSettings(saved_cull_settings);
1997     }
1998
1999 protected:
2000     // sort in reverse
2001     static bool freqComp(const InfoMap::iterator& lhs, const InfoMap::iterator& rhs)
2002     {
2003         return lhs->second > rhs->second;
2004     }
2005     InfoMap classInfo;
2006     InfoMap nodeInfo;
2007 };
2008
2009 bool printVisibleSceneInfo(FGRenderer* renderer)
2010 {
2011     osgViewer::Viewer* viewer = renderer->getViewer();
2012     VisibleSceneInfoVistor vsv;
2013     Viewport* vp = 0;
2014     if (!viewer->getCamera()->getViewport() && viewer->getNumSlaves() > 0) {
2015         const View::Slave& slave = viewer->getSlave(0);
2016         vp = slave._camera->getViewport();
2017     }
2018     vsv.doTraversal(viewer->getCamera(), viewer->getSceneData(), vp);
2019     return true;
2020 }
2021
2022 }
2023 // end of renderer.cxx
2024