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 // $Id$
  23
  24
  25 #ifdef HAVE_CONFIG_H
  26 #  include <config.h>
  27 #endif
  28
  29 #include <simgear/compiler.h>
  30
  31 #ifdef HAVE_WINDOWS_H
  32 #  include <windows.h>
  33 #endif
  34
  35 #include <osg/ref_ptr>
  36 #include <osg/AlphaFunc>
  37 #include <osg/BlendFunc>
  38 #include <osg/Camera>
  39 #include <osg/CullFace>
  40 #include <osg/Depth>
  41 #include <osg/Fog>
  42 #include <osg/Group>
  43 #include <osg/Hint>
  44 #include <osg/Light>
  45 #include <osg/LightModel>
  46 #include <osg/LightSource>
  47 #include <osg/NodeCallback>
  48 #include <osg/Notify>
  49 #include <osg/PolygonMode>
  50 #include <osg/PolygonOffset>
  51 #include <osg/ShadeModel>
  52 #include <osg/Version>
  53 #include <osg/TexEnv>
  54
  55 #include <osgUtil/SceneView>
  56 #include <osgUtil/UpdateVisitor>
  57 #include <osgUtil/IntersectVisitor>
  58 #include <osgUtil/LineSegmentIntersector>
  59
  60 #include <osg/io_utils>
  61 #include <osgDB/WriteFile>
  62 #include <osgDB/ReadFile>
  63 #include <sstream>
  64
  65 #include <simgear/math/SGMath.hxx>
  66 #include <simgear/screen/extensions.hxx>
  67 #include <simgear/scene/material/matlib.hxx>
  68 #include <simgear/scene/model/animation.hxx>
  69 #include <simgear/scene/model/model.hxx>
  70 #include <simgear/scene/model/modellib.hxx>
  71 #include <simgear/scene/model/placement.hxx>
  72 #include <simgear/scene/util/SGUpdateVisitor.hxx>
  73 #include <simgear/scene/util/RenderConstants.hxx>
  74 #include <simgear/scene/tgdb/GroundLightManager.hxx>
  75 #include <simgear/scene/tgdb/pt_lights.hxx>
  76 #include <simgear/props/props.hxx>
  77 #include <simgear/timing/sg_time.hxx>
  78 #include <simgear/ephemeris/ephemeris.hxx>
  79 #include <simgear/math/sg_random.h>
  80 #ifdef FG_JPEG_SERVER
  81 #include <simgear/screen/jpgfactory.hxx>
  82 #endif
  83
  84 #include <simgear/environment/visual_enviro.hxx>
  85
  86 #include <Scenery/tileentry.hxx>
  87 #include <Time/light.hxx>
  88 #include <Time/light.hxx>
  89 #include <Aircraft/aircraft.hxx>
  90 #include <Cockpit/panel.hxx>
  91 #include <Cockpit/cockpit.hxx>
  92 #include <Cockpit/hud.hxx>
  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 <Scenery/tilemgr.hxx>
  99 #include <GUI/new_gui.hxx>
 100 #include <Instrumentation/instrument_mgr.hxx>
 101 #include <Instrumentation/HUD/HUD.hxx>
 102
 103 #include <Include/general.hxx>
 104 #include "splash.hxx"
 105 #include "renderer.hxx"
 106 #include "main.hxx"
 107 #include "ViewPartitionNode.hxx"
 108
 109 // XXX Make this go away when OSG 2.2 is released.
 110 #if (FG_OSG_VERSION >= 21004)
 111 #define UPDATE_VISITOR_IN_VIEWER 1
 112 #endif
 113
 114 class FGHintUpdateCallback : public osg::StateAttribute::Callback {
 115 public:
 116   FGHintUpdateCallback(const char* configNode) :
 117     mConfigNode(fgGetNode(configNode, true))
 118   { }
 119   virtual void operator()(osg::StateAttribute* stateAttribute,
 120                           osg::NodeVisitor*)
 121   {
 122     assert(dynamic_cast<osg::Hint*>(stateAttribute));
 123     osg::Hint* hint = static_cast<osg::Hint*>(stateAttribute);
 124
 125     const char* value = mConfigNode->getStringValue();
 126     if (!value)
 127       hint->setMode(GL_DONT_CARE);
 128     else if (0 == strcmp(value, "nicest"))
 129       hint->setMode(GL_NICEST);
 130     else if (0 == strcmp(value, "fastest"))
 131       hint->setMode(GL_FASTEST);
 132     else
 133       hint->setMode(GL_DONT_CARE);
 134   }
 135 private:
 136   SGSharedPtr<SGPropertyNode> mConfigNode;
 137 };
 138
 139
 140 class SGPuDrawable : public osg::Drawable {
 141 public:
 142   SGPuDrawable()
 143   {
 144     // Dynamic stuff, do not store geometry
 145     setUseDisplayList(false);
 146
 147     osg::StateSet* stateSet = getOrCreateStateSet();
 148     stateSet->setRenderBinDetails(1001, "RenderBin");
 149     // speed optimization?
 150     stateSet->setMode(GL_CULL_FACE, osg::StateAttribute::OFF);
 151     // We can do translucent menus, so why not. :-)
 152     stateSet->setAttribute(new osg::BlendFunc(osg::BlendFunc::SRC_ALPHA, osg::BlendFunc::ONE_MINUS_SRC_ALPHA));
 153     stateSet->setMode(GL_BLEND, osg::StateAttribute::ON);
 154     stateSet->setTextureMode(0, GL_TEXTURE_2D, osg::StateAttribute::OFF);
 155
 156     stateSet->setTextureAttribute(0, new osg::TexEnv(osg::TexEnv::MODULATE));
 157
 158     stateSet->setMode(GL_FOG, osg::StateAttribute::OFF);
 159     stateSet->setMode(GL_DEPTH_TEST, osg::StateAttribute::OFF);
 160   }
 161   virtual void drawImplementation(osg::RenderInfo& renderInfo) const
 162   { drawImplementation(*renderInfo.getState()); }
 163   void drawImplementation(osg::State& state) const
 164   {
 165     if (!fgOSIsMainContext(state.getGraphicsContext()))
 166       return;
 167
 168     state.pushStateSet(getStateSet());
 169     state.apply();
 170     state.setActiveTextureUnit(0);
 171     state.setClientActiveTextureUnit(0);
 172     state.disableAllVertexArrays();
 173
 174     glPushAttrib(GL_ALL_ATTRIB_BITS);
 175     glPushClientAttrib(~0u);
 176
 177     puDisplay();
 178
 179     glPopClientAttrib();
 180     glPopAttrib();
 181
 182     state.popStateSet();
 183     state.dirtyAllModes();
 184     state.dirtyAllAttributes();
 185     state.dirtyAllVertexArrays();
 186   }
 187
 188   virtual osg::Object* cloneType() const { return new SGPuDrawable; }
 189   virtual osg::Object* clone(const osg::CopyOp&) const { return new SGPuDrawable; }
 190
 191 private:
 192 };
 193
 194 class SGHUDAndPanelDrawable : public osg::Drawable {
 195 public:
 196   SGHUDAndPanelDrawable()
 197   {
 198     // Dynamic stuff, do not store geometry
 199     setUseDisplayList(false);
 200
 201     osg::StateSet* stateSet = getOrCreateStateSet();
 202     stateSet->setRenderBinDetails(1000, "RenderBin");
 203
 204     // speed optimization?
 205     stateSet->setMode(GL_CULL_FACE, osg::StateAttribute::OFF);
 206     stateSet->setAttribute(new osg::BlendFunc(osg::BlendFunc::SRC_ALPHA, osg::BlendFunc::ONE_MINUS_SRC_ALPHA));
 207     stateSet->setMode(GL_BLEND, osg::StateAttribute::ON);
 208     stateSet->setMode(GL_FOG, osg::StateAttribute::OFF);
 209     stateSet->setMode(GL_DEPTH_TEST, osg::StateAttribute::OFF);
 210
 211     stateSet->setTextureAttribute(0, new osg::TexEnv(osg::TexEnv::MODULATE));
 212   }
 213   virtual void drawImplementation(osg::RenderInfo& renderInfo) const
 214   { drawImplementation(*renderInfo.getState()); }
 215   void drawImplementation(osg::State& state) const
 216   {
 217 //     std::cout << state.getGraphicsContext() << std::endl;
 218     if (!fgOSIsMainContext(state.getGraphicsContext()))
 219       return;
 220
 221     state.pushStateSet(getStateSet());
 222     state.apply();
 223     state.setActiveTextureUnit(0);
 224     state.setClientActiveTextureUnit(0);
 225     state.disableAllVertexArrays();
 226
 227     glPushAttrib(GL_ALL_ATTRIB_BITS);
 228     glPushClientAttrib(~0u);
 229
 230     fgCockpitUpdate(&state);
 231
 232     FGInstrumentMgr *instr = static_cast<FGInstrumentMgr*>(globals->get_subsystem("instrumentation"));
 233     HUD *hud = static_cast<HUD*>(instr->get_subsystem("hud"));
 234     hud->draw(state);
 235
 236     // update the panel subsystem
 237     if ( globals->get_current_panel() != NULL )
 238         globals->get_current_panel()->update(state);
 239     // We don't need a state here - can be safely removed when we can pick
 240     // correctly
 241     fgUpdate3DPanels();
 242
 243     glPopClientAttrib();
 244     glPopAttrib();
 245
 246     state.popStateSet();
 247     state.dirtyAllModes();
 248     state.dirtyAllAttributes();
 249     state.dirtyAllVertexArrays();
 250   }
 251
 252   virtual osg::Object* cloneType() const { return new SGHUDAndPanelDrawable; }
 253   virtual osg::Object* clone(const osg::CopyOp&) const { return new SGHUDAndPanelDrawable; }
 254
 255 private:
 256 };
 257
 258 class FGLightSourceUpdateCallback : public osg::NodeCallback {
 259 public:
 260   virtual void operator()(osg::Node* node, osg::NodeVisitor* nv)
 261   {
 262     assert(dynamic_cast<osg::LightSource*>(node));
 263     osg::LightSource* lightSource = static_cast<osg::LightSource*>(node);
 264     osg::Light* light = lightSource->getLight();
 265
 266     FGLight *l = static_cast<FGLight*>(globals->get_subsystem("lighting"));
 267     light->setAmbient(l->scene_ambient().osg());
 268     light->setDiffuse(l->scene_diffuse().osg());
 269     light->setSpecular(l->scene_specular().osg());
 270     SGVec4f position(l->sun_vec()[0], l->sun_vec()[1], l->sun_vec()[2], 0);
 271     light->setPosition(position.osg());
 272     SGVec3f direction(l->sun_vec()[0], l->sun_vec()[1], l->sun_vec()[2]);
 273     light->setDirection(direction.osg());
 274     light->setSpotExponent(0);
 275     light->setSpotCutoff(180);
 276     light->setConstantAttenuation(1);
 277     light->setLinearAttenuation(0);
 278     light->setQuadraticAttenuation(0);
 279
 280     traverse(node, nv);
 281   }
 282 };
 283
 284 class FGWireFrameModeUpdateCallback : public osg::StateAttribute::Callback {
 285 public:
 286   FGWireFrameModeUpdateCallback() :
 287     mWireframe(fgGetNode("/sim/rendering/wireframe"))
 288   { }
 289   virtual void operator()(osg::StateAttribute* stateAttribute,
 290                           osg::NodeVisitor*)
 291   {
 292     assert(dynamic_cast<osg::PolygonMode*>(stateAttribute));
 293     osg::PolygonMode* polygonMode;
 294     polygonMode = static_cast<osg::PolygonMode*>(stateAttribute);
 295
 296     if (mWireframe->getBoolValue())
 297       polygonMode->setMode(osg::PolygonMode::FRONT_AND_BACK,
 298                            osg::PolygonMode::LINE);
 299     else
 300       polygonMode->setMode(osg::PolygonMode::FRONT_AND_BACK,
 301                            osg::PolygonMode::FILL);
 302   }
 303 private:
 304   SGSharedPtr<SGPropertyNode> mWireframe;
 305 };
 306
 307 class FGLightModelUpdateCallback : public osg::StateAttribute::Callback {
 308 public:
 309   FGLightModelUpdateCallback() :
 310     mHighlights(fgGetNode("/sim/rendering/specular-highlight"))
 311   { }
 312   virtual void operator()(osg::StateAttribute* stateAttribute,
 313                           osg::NodeVisitor*)
 314   {
 315     assert(dynamic_cast<osg::LightModel*>(stateAttribute));
 316     osg::LightModel* lightModel;
 317     lightModel = static_cast<osg::LightModel*>(stateAttribute);
 318
 319 #if 0
 320     FGLight *l = static_cast<FGLight*>(globals->get_subsystem("lighting"));
 321     lightModel->setAmbientIntensity(l->scene_ambient().osg());
 322 #else
 323     lightModel->setAmbientIntensity(osg::Vec4(0, 0, 0, 1));
 324 #endif
 325     lightModel->setTwoSided(true);
 326     lightModel->setLocalViewer(false);
 327
 328     if (mHighlights->getBoolValue()) {
 329       lightModel->setColorControl(osg::LightModel::SEPARATE_SPECULAR_COLOR);
 330     } else {
 331       lightModel->setColorControl(osg::LightModel::SINGLE_COLOR);
 332     }
 333   }
 334 private:
 335   SGSharedPtr<SGPropertyNode> mHighlights;
 336 };
 337
 338 class FGFogEnableUpdateCallback : public osg::StateSet::Callback {
 339 public:
 340   FGFogEnableUpdateCallback() :
 341     mFogEnabled(fgGetNode("/sim/rendering/fog"))
 342   { }
 343   virtual void operator()(osg::StateSet* stateSet, osg::NodeVisitor*)
 344   {
 345     if (strcmp(mFogEnabled->getStringValue(), "disabled") == 0) {
 346       stateSet->setMode(GL_FOG, osg::StateAttribute::OFF);
 347     } else {
 348       stateSet->setMode(GL_FOG, osg::StateAttribute::ON);
 349     }
 350   }
 351 private:
 352   SGSharedPtr<SGPropertyNode> mFogEnabled;
 353 };
 354
 355 class FGFogUpdateCallback : public osg::StateAttribute::Callback {
 356 public:
 357   virtual void operator () (osg::StateAttribute* sa, osg::NodeVisitor* nv)
 358   {
 359     assert(dynamic_cast<SGUpdateVisitor*>(nv));
 360     assert(dynamic_cast<osg::Fog*>(sa));
 361     SGUpdateVisitor* updateVisitor = static_cast<SGUpdateVisitor*>(nv);
 362     osg::Fog* fog = static_cast<osg::Fog*>(sa);
 363     fog->setMode(osg::Fog::EXP2);
 364     fog->setColor(updateVisitor->getFogColor().osg());
 365     fog->setDensity(updateVisitor->getFogExp2Density());
 366   }
 367 };
 368
 369 // update callback for the switch node guarding that splash
 370 class FGScenerySwitchCallback : public osg::NodeCallback {
 371 public:
 372   virtual void operator()(osg::Node* node, osg::NodeVisitor* nv)
 373   {
 374     assert(dynamic_cast<osg::Switch*>(node));
 375     osg::Switch* sw = static_cast<osg::Switch*>(node);
 376
 377     double t = globals->get_sim_time_sec();
 378     bool enabled = 0 < t;
 379     sw->setValue(0, enabled);
 380     if (!enabled)
 381       return;
 382     traverse(node, nv);
 383   }
 384 };
 385
 386 // Sky structures
 387 SGSky *thesky;
 388
 389 static osg::ref_ptr<osg::FrameStamp> mFrameStamp = new osg::FrameStamp;
 390 static osg::ref_ptr<SGUpdateVisitor> mUpdateVisitor= new SGUpdateVisitor;
 391
 392 static osg::ref_ptr<osg::Group> mRealRoot = new osg::Group;
 393
 394 static osg::ref_ptr<osg::Group> mRoot = new osg::Group;
 395
 396 static osg::ref_ptr<ViewPartitionNode> viewPartition = new ViewPartitionNode;
 397
 398 FGRenderer::FGRenderer()
 399 {
 400 #ifdef FG_JPEG_SERVER
 401    jpgRenderFrame = FGRenderer::update;
 402 #endif
 403    manipulator = new FGManipulator;
 404 }
 405
 406 FGRenderer::~FGRenderer()
 407 {
 408 #ifdef FG_JPEG_SERVER
 409    jpgRenderFrame = NULL;
 410 #endif
 411 }
 412
 413 // Initialize various GL/view parameters
 414 // XXX This should be called "preinit" or something, as it initializes
 415 // critical parts of the scene graph in addition to the splash screen.
 416 void
 417 FGRenderer::splashinit( void ) {
 418     osgViewer::Viewer* viewer = globals->get_renderer()->getViewer();
 419     mRealRoot = dynamic_cast<osg::Group*>(viewer->getSceneData());
 420     mRealRoot->addChild(fgCreateSplashNode());
 421     mFrameStamp = viewer->getFrameStamp();
 422     // Scene doesn't seem to pass the frame stamp to the update
 423     // visitor automatically.
 424     mUpdateVisitor->setFrameStamp(mFrameStamp.get());
 425 #ifdef UPDATE_VISITOR_IN_VIEWER
 426     viewer->setUpdateVisitor(mUpdateVisitor.get());
 427 #else
 428     osgViewer::Scene* scene = viewer->getScene();
 429     scene->setUpdateVisitor(mUpdateVisitor.get());
 430 #endif
 431 }
 432
 433 void
 434 FGRenderer::init( void ) {
 435     // The viewer can call this before the graphics context is current
 436     // in the main thread; indeed, in a multithreaded setup it might
 437     // never be current in the main thread.
 438     fgMakeCurrent();
 439     osgViewer::Viewer* viewer = globals->get_renderer()->getViewer();
 440     osg::initNotifyLevel();
 441
 442     // The number of polygon-offset "units" to place between layers.  In
 443     // principle, one is supposed to be enough.  In practice, I find that
 444     // my hardware/driver requires many more.
 445     osg::PolygonOffset::setUnitsMultiplier(1);
 446     osg::PolygonOffset::setFactorMultiplier(1);
 447
 448     // Go full screen if requested ...
 449     if ( fgGetBool("/sim/startup/fullscreen") )
 450         fgOSFullScreen();
 451
 452     viewer->getCamera()
 453         ->setComputeNearFarMode(osg::CullSettings::DO_NOT_COMPUTE_NEAR_FAR);
 454
 455     osg::StateSet* stateSet = mRoot->getOrCreateStateSet();
 456
 457     stateSet->setMode(GL_LIGHTING, osg::StateAttribute::OFF);
 458
 459     stateSet->setAttribute(new osg::Depth(osg::Depth::LESS));
 460     stateSet->setMode(GL_DEPTH_TEST, osg::StateAttribute::OFF);
 461
 462     stateSet->setAttribute(new osg::AlphaFunc(osg::AlphaFunc::GREATER, 0.01));
 463     stateSet->setMode(GL_ALPHA_TEST, osg::StateAttribute::OFF);
 464     stateSet->setAttribute(new osg::BlendFunc);
 465     stateSet->setMode(GL_BLEND, osg::StateAttribute::OFF);
 466
 467     stateSet->setMode(GL_FOG, osg::StateAttribute::OFF);
 468
 469     // this will be set below
 470     stateSet->setMode(GL_NORMALIZE, osg::StateAttribute::OFF);
 471
 472     osg::Material* material = new osg::Material;
 473     stateSet->setAttribute(material);
 474
 475     stateSet->setTextureAttribute(0, new osg::TexEnv);
 476     stateSet->setTextureMode(0, GL_TEXTURE_2D, osg::StateAttribute::OFF);
 477
 478     osg::Hint* hint = new osg::Hint(GL_FOG_HINT, GL_DONT_CARE);
 479     hint->setUpdateCallback(new FGHintUpdateCallback("/sim/rendering/fog"));
 480     stateSet->setAttribute(hint);
 481     hint = new osg::Hint(GL_POLYGON_SMOOTH_HINT, GL_DONT_CARE);
 482     hint->setUpdateCallback(new FGHintUpdateCallback("/sim/rendering/polygon-smooth"));
 483     stateSet->setAttribute(hint);
 484     hint = new osg::Hint(GL_LINE_SMOOTH_HINT, GL_DONT_CARE);
 485     hint->setUpdateCallback(new FGHintUpdateCallback("/sim/rendering/line-smooth"));
 486     stateSet->setAttribute(hint);
 487     hint = new osg::Hint(GL_POINT_SMOOTH_HINT, GL_DONT_CARE);
 488     hint->setUpdateCallback(new FGHintUpdateCallback("/sim/rendering/point-smooth"));
 489     stateSet->setAttribute(hint);
 490     hint = new osg::Hint(GL_PERSPECTIVE_CORRECTION_HINT, GL_DONT_CARE);
 491     hint->setUpdateCallback(new FGHintUpdateCallback("/sim/rendering/perspective-correction"));
 492     stateSet->setAttribute(hint);
 493
 494     osg::Group* sceneGroup = new osg::Group;
 495     sceneGroup->addChild(globals->get_scenery()->get_scene_graph());
 496     sceneGroup->setNodeMask(~simgear::BACKGROUND_BIT);
 497
 498     //sceneGroup->addChild(thesky->getCloudRoot());
 499
 500     stateSet = sceneGroup->getOrCreateStateSet();
 501     stateSet->setMode(GL_BLEND, osg::StateAttribute::ON);
 502     stateSet->setMode(GL_DEPTH_TEST, osg::StateAttribute::ON);
 503
 504     // need to update the light on every frame
 505     osg::LightSource* lightSource = new osg::LightSource;
 506     lightSource->setUpdateCallback(new FGLightSourceUpdateCallback);
 507     // relative because of CameraView being just a clever transform node
 508     lightSource->setReferenceFrame(osg::LightSource::RELATIVE_RF);
 509     lightSource->setLocalStateSetModes(osg::StateAttribute::ON);
 510
 511     lightSource->addChild(sceneGroup);
 512     lightSource->addChild(thesky->getPreRoot());
 513     mRoot->addChild(lightSource);
 514
 515     stateSet = globals->get_scenery()->get_scene_graph()->getOrCreateStateSet();
 516     stateSet->setMode(GL_BLEND, osg::StateAttribute::ON);
 517     stateSet->setMode(GL_ALPHA_TEST, osg::StateAttribute::ON);
 518     stateSet->setMode(GL_LIGHTING, osg::StateAttribute::ON);
 519     stateSet->setMode(GL_DEPTH_TEST, osg::StateAttribute::ON);
 520
 521     // enable disable specular highlights.
 522     // is the place where we might plug in an other fragment shader ...
 523     osg::LightModel* lightModel = new osg::LightModel;
 524     lightModel->setUpdateCallback(new FGLightModelUpdateCallback);
 525     stateSet->setAttribute(lightModel);
 526
 527     // switch to enable wireframe
 528     osg::PolygonMode* polygonMode = new osg::PolygonMode;
 529     polygonMode->setUpdateCallback(new FGWireFrameModeUpdateCallback);
 530     stateSet->setAttributeAndModes(polygonMode);
 531
 532     // scene fog handling
 533     osg::Fog* fog = new osg::Fog;
 534     fog->setUpdateCallback(new FGFogUpdateCallback);
 535     stateSet->setAttributeAndModes(fog);
 536     stateSet->setUpdateCallback(new FGFogEnableUpdateCallback);
 537
 538     // plug in the GUI
 539     osg::Camera* guiCamera = new osg::Camera;
 540     guiCamera->setRenderOrder(osg::Camera::POST_RENDER, 100);
 541     guiCamera->setClearMask(0);
 542     GLbitfield inheritanceMask = osg::CullSettings::ALL_VARIABLES;
 543     inheritanceMask &= ~osg::CullSettings::COMPUTE_NEAR_FAR_MODE;
 544     inheritanceMask &= ~osg::CullSettings::CULLING_MODE;
 545     guiCamera->setInheritanceMask(inheritanceMask);
 546     guiCamera->setComputeNearFarMode(osg::CullSettings::DO_NOT_COMPUTE_NEAR_FAR);
 547     guiCamera->setCullingMode(osg::CullSettings::NO_CULLING);
 548     osg::Geode* geode = new osg::Geode;
 549     geode->addDrawable(new SGPuDrawable);
 550     geode->addDrawable(new SGHUDAndPanelDrawable);
 551     guiCamera->addChild(geode);
 552
 553     osg::Switch* sw = new osg::Switch;
 554     sw->setUpdateCallback(new FGScenerySwitchCallback);
 555     sw->addChild(mRoot.get());
 556     viewPartition->addChild(sw);
 557     viewPartition->addChild(thesky->getCloudRoot());
 558
 559     mRealRoot->addChild(viewPartition.get());
 560     mRealRoot->addChild(FGCreateRedoutNode());
 561     mRealRoot->addChild(guiCamera);
 562 }
 563
 564
 565 // Update all Visuals (redraws anything graphics related)
 566 void
 567 FGRenderer::update( bool refresh_camera_settings ) {
 568     bool scenery_loaded = fgGetBool("sim/sceneryloaded")
 569                           || fgGetBool("sim/sceneryloaded-override");
 570     osgViewer::Viewer* viewer = globals->get_renderer()->getViewer();
 571     if ( idle_state < 1000 || !scenery_loaded ) {
 572         fgSetDouble("/sim/startup/splash-alpha", 1.0);
 573
 574         // Keep resetting sim time while the sim is initializing
 575         // the splash screen is now in the scenegraph
 576         globals->set_sim_time_sec( 0.0 );
 577         return;
 578     }
 579
 580     // Fade out the splash screen over the first three seconds.
 581     double sAlpha = SGMiscd::max(0, (2.5 - globals->get_sim_time_sec()) / 2.5);
 582     fgSetDouble("/sim/startup/splash-alpha", sAlpha);
 583
 584     bool skyblend = fgGetBool("/sim/rendering/skyblend");
 585     bool use_point_sprites = fgGetBool("/sim/rendering/point-sprites");
 586     bool enhanced_lighting = fgGetBool("/sim/rendering/enhanced-lighting");
 587     bool distance_attenuation
 588         = fgGetBool("/sim/rendering/distance-attenuation");
 589     // OSGFIXME
 590     SGConfigureDirectionalLights( use_point_sprites, enhanced_lighting,
 591                                   distance_attenuation );
 592
 593     static const SGPropertyNode *groundlevel_nearplane
 594         = fgGetNode("/sim/current-view/ground-level-nearplane-m");
 595
 596     FGLight *l = static_cast<FGLight*>(globals->get_subsystem("lighting"));
 597
 598     // update fog params
 599     double actual_visibility;
 600     if (fgGetBool("/environment/clouds/status")) {
 601         actual_visibility = thesky->get_visibility();
 602     } else {
 603         actual_visibility = fgGetDouble("/environment/visibility-m");
 604     }
 605
 606     // idle_state is now 1000 meaning we've finished all our
 607     // initializations and are running the main loop, so this will
 608     // now work without seg faulting the system.
 609
 610     FGViewer *current__view = globals->get_current_view();
 611     // Force update of center dependent values ...
 612     current__view->set_dirty();
 613
 614     if ( refresh_camera_settings ) {
 615         // update view port
 616         resize( fgGetInt("/sim/startup/xsize"),
 617                 fgGetInt("/sim/startup/ysize") );
 618
 619         SGVec3d position = current__view->getViewPosition();
 620         SGQuatd attitude = current__view->getViewOrientation();
 621         SGVec3d osgPosition = attitude.transform(-position);
 622
 623         FGManipulator *manipulator = globals->get_renderer()->getManipulator();
 624         manipulator->setPosition(position.osg());
 625         manipulator->setAttitude(attitude.osg());
 626     }
 627     osg::Camera *camera = viewer->getCamera();
 628
 629     if ( skyblend ) {
 630
 631         if ( fgGetBool("/sim/rendering/textures") ) {
 632             SGVec4f clearColor(l->adj_fog_color());
 633             camera->setClearColor(clearColor.osg());
 634         }
 635     } else {
 636         SGVec4f clearColor(l->sky_color());
 637         camera->setClearColor(clearColor.osg());
 638     }
 639
 640     // update fog params if visibility has changed
 641     double visibility_meters = fgGetDouble("/environment/visibility-m");
 642     thesky->set_visibility(visibility_meters);
 643
 644     thesky->modify_vis( cur_fdm_state->get_Altitude() * SG_FEET_TO_METER,
 645                         ( global_multi_loop * fgGetInt("/sim/speed-up") )
 646                         / (double)fgGetInt("/sim/model-hz") );
 647
 648     // update the sky dome
 649     if ( skyblend ) {
 650
 651         // The sun and moon distances are scaled down versions
 652         // of the actual distance to get both the moon and the sun
 653         // within the range of the far clip plane.
 654         // Moon distance:    384,467 kilometers
 655         // Sun distance: 150,000,000 kilometers
 656
 657         double sun_horiz_eff, moon_horiz_eff;
 658         if (fgGetBool("/sim/rendering/horizon-effect")) {
 659            sun_horiz_eff = 0.67+pow(0.5+cos(l->get_sun_angle())*2/2, 0.33)/3;
 660            moon_horiz_eff = 0.67+pow(0.5+cos(l->get_moon_angle())*2/2, 0.33)/3;
 661         } else {
 662            sun_horiz_eff = moon_horiz_eff = 1.0;
 663         }
 664
 665         static SGSkyState sstate;
 666
 667         sstate.view_pos  = toVec3f(current__view->get_view_pos());
 668         sstate.zero_elev = toVec3f(current__view->get_zero_elev());
 669         sstate.view_up   = current__view->get_world_up();
 670         sstate.lon       = current__view->getLongitude_deg()
 671                             * SGD_DEGREES_TO_RADIANS;
 672         sstate.lat       = current__view->getLatitude_deg()
 673                             * SGD_DEGREES_TO_RADIANS;
 674         sstate.alt       = current__view->getAltitudeASL_ft()
 675                             * SG_FEET_TO_METER;
 676         sstate.spin      = l->get_sun_rotation();
 677         sstate.gst       = globals->get_time_params()->getGst();
 678         sstate.sun_ra    = globals->get_ephem()->getSunRightAscension();
 679         sstate.sun_dec   = globals->get_ephem()->getSunDeclination();
 680         sstate.sun_dist  = 50000.0 * sun_horiz_eff;
 681         sstate.moon_ra   = globals->get_ephem()->getMoonRightAscension();
 682         sstate.moon_dec  = globals->get_ephem()->getMoonDeclination();
 683         sstate.moon_dist = 40000.0 * moon_horiz_eff;
 684         sstate.sun_angle = l->get_sun_angle();
 685
 686
 687         /*
 688          SG_LOG( SG_GENERAL, SG_BULK, "thesky->repaint() sky_color = "
 689          << l->sky_color()[0] << " "
 690          << l->sky_color()[1] << " "
 691          << l->sky_color()[2] << " "
 692          << l->sky_color()[3] );
 693         SG_LOG( SG_GENERAL, SG_BULK, "    fog = "
 694          << l->fog_color()[0] << " "
 695          << l->fog_color()[1] << " "
 696          << l->fog_color()[2] << " "
 697          << l->fog_color()[3] );
 698         SG_LOG( SG_GENERAL, SG_BULK,
 699                 "    sun_angle = " << l->sun_angle
 700          << "    moon_angle = " << l->moon_angle );
 701         */
 702
 703         static SGSkyColor scolor;
 704
 705         scolor.sky_color   = SGVec3f(l->sky_color().data());
 706         scolor.fog_color   = SGVec3f(l->adj_fog_color().data());
 707         scolor.cloud_color = SGVec3f(l->cloud_color().data());
 708         scolor.sun_angle   = l->get_sun_angle();
 709         scolor.moon_angle  = l->get_moon_angle();
 710         scolor.nplanets    = globals->get_ephem()->getNumPlanets();
 711         scolor.nstars      = globals->get_ephem()->getNumStars();
 712         scolor.planet_data = globals->get_ephem()->getPlanets();
 713         scolor.star_data   = globals->get_ephem()->getStars();
 714
 715         thesky->reposition( sstate, delta_time_sec );
 716         thesky->repaint( scolor );
 717
 718         /*
 719         SG_LOG( SG_GENERAL, SG_BULK,
 720                 "thesky->reposition( view_pos = " << view_pos[0] << " "
 721          << view_pos[1] << " " << view_pos[2] );
 722         SG_LOG( SG_GENERAL, SG_BULK,
 723                 "    zero_elev = " << zero_elev[0] << " "
 724          << zero_elev[1] << " " << zero_elev[2]
 725          << " lon = " << cur_fdm_state->get_Longitude()
 726          << " lat = " << cur_fdm_state->get_Latitude() );
 727         SG_LOG( SG_GENERAL, SG_BULK,
 728                 "    sun_rot = " << l->get_sun_rotation
 729          << " gst = " << SGTime::cur_time_params->getGst() );
 730         SG_LOG( SG_GENERAL, SG_BULK,
 731              "    sun ra = " << globals->get_ephem()->getSunRightAscension()
 732           << " sun dec = " << globals->get_ephem()->getSunDeclination()
 733           << " moon ra = " << globals->get_ephem()->getMoonRightAscension()
 734           << " moon dec = " << globals->get_ephem()->getMoonDeclination() );
 735         */
 736
 737         //OSGFIXME
 738 //         shadows->setupShadows(
 739 //           current__view->getLongitude_deg(),
 740 //           current__view->getLatitude_deg(),
 741 //           globals->get_time_params()->getGst(),
 742 //           globals->get_ephem()->getSunRightAscension(),
 743 //           globals->get_ephem()->getSunDeclination(),
 744 //           l->get_sun_angle());
 745
 746     }
 747
 748 //     sgEnviro.setLight(l->adj_fog_color());
 749
 750     double agl = current__view->getAltitudeASL_ft()*SG_FEET_TO_METER
 751       - current__view->getSGLocation()->get_cur_elev_m();
 752
 753     float scene_nearplane, scene_farplane;
 754     if ( agl > 10.0 ) {
 755         scene_nearplane = 10.0f;
 756         scene_farplane = 120000.0f;
 757     } else {
 758         scene_nearplane = groundlevel_nearplane->getDoubleValue();
 759         scene_farplane = 120000.0f;
 760     }
 761     setNearFar( scene_nearplane, scene_farplane );
 762
 763 //     sgEnviro.startOfFrame(current__view->get_view_pos(),
 764 //         current__view->get_world_up(),
 765 //         current__view->getLongitude_deg(),
 766 //         current__view->getLatitude_deg(),
 767 //         current__view->getAltitudeASL_ft() * SG_FEET_TO_METER,
 768 //         delta_time_sec);
 769
 770     // OSGFIXME
 771 //     sgEnviro.drawLightning();
 772
 773 //        double current_view_origin_airspeed_horiz_kt =
 774 //         fgGetDouble("/velocities/airspeed-kt", 0.0)
 775 //                        * cos( fgGetDouble("/orientation/pitch-deg", 0.0)
 776 //                                * SGD_DEGREES_TO_RADIANS);
 777        // TODO:find the real view speed, not the AC one
 778 //     sgEnviro.drawPrecipitation(
 779 //         fgGetDouble("/environment/metar/rain-norm", 0.0),
 780 //         fgGetDouble("/environment/metar/snow-norm", 0.0),
 781 //         fgGetDouble("/environment/metar/hail-norm", 0.0),
 782 //         current__view->getPitch_deg() + current__view->getPitchOffset_deg(),
 783 //         current__view->getRoll_deg() + current__view->getRollOffset_deg(),
 784 //         - current__view->getHeadingOffset_deg(),
 785 //                current_view_origin_airspeed_horiz_kt
 786 //                );
 787
 788     // OSGFIXME
 789 //     if( is_internal )
 790 //         shadows->endOfFrame();
 791
 792     // need to call the update visitor once
 793     mFrameStamp->setCalendarTime(*globals->get_time_params()->getGmt());
 794     mUpdateVisitor->setViewData(current__view->getViewPosition(),
 795                                 current__view->getViewOrientation());
 796     SGVec3f direction(l->sun_vec()[0], l->sun_vec()[1], l->sun_vec()[2]);
 797     mUpdateVisitor->setLight(direction, l->scene_ambient(),
 798                              l->scene_diffuse(), l->scene_specular(),
 799                              l->adj_fog_color(),
 800                              l->get_sun_angle()*SGD_RADIANS_TO_DEGREES);
 801     mUpdateVisitor->setVisibility(actual_visibility);
 802     viewPartition->setVisibility(actual_visibility);
 803     simgear::GroundLightManager::instance()->update(mUpdateVisitor.get());
 804     bool hotspots = fgGetBool("/sim/panel-hotspots");
 805     osg::Node::NodeMask cullMask = (~simgear::LIGHTS_BITS & ~simgear::PICK_BIT
 806                                     & ~simgear::BACKGROUND_BIT);
 807     cullMask |= simgear::GroundLightManager::instance()
 808         ->getLightNodeMask(mUpdateVisitor.get());
 809     if (hotspots)
 810         cullMask |= simgear::PICK_BIT;
 811     camera->setCullMask(cullMask);
 812     // XXX
 813     for (int i = 0; i < viewer->getNumSlaves(); ++i)
 814         viewer->getSlave(i)._camera->setCullMask(cullMask);
 815 }
 816
 817
 818
 819 // options.cxx needs to see this for toggle_panel()
 820 // Handle new window size or exposure
 821 void
 822 FGRenderer::resize( int width, int height ) {
 823     int view_h;
 824
 825     if ( (!fgGetBool("/sim/virtual-cockpit"))
 826          && fgPanelVisible() && idle_state == 1000 ) {
 827         view_h = (int)(height * (globals->get_current_panel()->getViewHeight() -
 828                              globals->get_current_panel()->getYOffset()) / 768.0);
 829     } else {
 830         view_h = height;
 831     }
 832
 833     static int lastwidth = 0;
 834     static int lastheight = 0;
 835     if (width != lastwidth)
 836         fgSetInt("/sim/startup/xsize", lastwidth = width);
 837     if (height != lastheight)
 838         fgSetInt("/sim/startup/ysize", lastheight = height);
 839
 840     guiInitMouse(width, height);
 841
 842     // for all views
 843     FGViewMgr *viewmgr = globals->get_viewmgr();
 844     if (viewmgr) {
 845       for ( int i = 0; i < viewmgr->size(); ++i ) {
 846         viewmgr->get_view(i)->
 847           set_aspect_ratio((float)view_h / (float)width);
 848       }
 849
 850       setFOV( viewmgr->get_current_view()->get_h_fov(),
 851               viewmgr->get_current_view()->get_v_fov() );
 852     }
 853 }
 854
 855
 856 // we need some static storage space for these values.  However, we
 857 // can't store it in a renderer class object because the functions
 858 // that manipulate these are static.  They are static so they can
 859 // interface to the display callback system.  There's probably a
 860 // better way, there has to be a better way, but I'm not seeing it
 861 // right now.
 862 static float fov_width = 55.0;
 863 static float fov_height = 42.0;
 864 static float fov_near = 1.0;
 865 static float fov_far = 1000.0;
 866
 867
 868 /** FlightGear code should use this routine to set the FOV rather than
 869  *  calling the ssg routine directly
 870  */
 871 void FGRenderer::setFOV( float w, float h ) {
 872     fov_width = w;
 873     fov_height = h;
 874     osgViewer::Viewer* viewer = globals->get_renderer()->getViewer();
 875     viewer->getCamera()->setProjectionMatrixAsPerspective(fov_height, 4.0/3.0,
 876                                                           fov_near, fov_far);
 877 }
 878
 879
 880 /** FlightGear code should use this routine to set the Near/Far clip
 881  *  planes rather than calling the ssg routine directly
 882  */
 883 void FGRenderer::setNearFar( float n, float f ) {
 884 // OSGFIXME: we have currently too much z-buffer fights
 885 n = 0.1;
 886     fov_near = n;
 887     fov_far = f;
 888     osgViewer::Viewer* viewer = globals->get_renderer()->getViewer();
 889     viewer->getCamera()->setProjectionMatrixAsPerspective(fov_height, 4.0/3.0,
 890                                                           fov_near, fov_far);
 891 }
 892
 893 bool
 894 FGRenderer::pick( unsigned x, unsigned y,
 895                   std::vector<SGSceneryPick>& pickList,
 896                   const osgGA::GUIEventAdapter* ea )
 897 {
 898   osgViewer::Viewer* viewer = globals->get_renderer()->getViewer();
 899   // wipe out the return ...
 900   pickList.resize(0);
 901
 902   if (viewer) {
 903     // just compute intersections in the viewers method ...
 904     typedef osgUtil::LineSegmentIntersector::Intersections Intersections;
 905     Intersections intersections;
 906     viewer->computeIntersections(ea->getX(), ea->getY(), intersections);
 907
 908     Intersections::iterator hit;
 909     for (hit = intersections.begin(); hit != intersections.end(); ++hit) {
 910       const osg::NodePath& np = hit->nodePath;
 911       osg::NodePath::const_reverse_iterator npi;
 912       for (npi = np.rbegin(); npi != np.rend(); ++npi) {
 913         SGSceneUserData* ud = SGSceneUserData::getSceneUserData(*npi);
 914         if (!ud)
 915           continue;
 916         for (unsigned i = 0; i < ud->getNumPickCallbacks(); ++i) {
 917           SGPickCallback* pickCallback = ud->getPickCallback(i);
 918           if (!pickCallback)
 919             continue;
 920           SGSceneryPick sceneryPick;
 921           sceneryPick.info.local = SGVec3d(hit->getLocalIntersectPoint());
 922           sceneryPick.info.wgs84 = SGVec3d(hit->getWorldIntersectPoint());
 923           sceneryPick.callback = pickCallback;
 924           pickList.push_back(sceneryPick);
 925         }
 926       }
 927     }
 928     return !pickList.empty();
 929   } else {                      // we can get called early ...
 930     return false;
 931   }
 932 }
 933
 934 void
 935 FGRenderer::addCamera(osg::Camera* camera, bool useSceneData)
 936 {
 937     mRealRoot->addChild(camera);
 938 }
 939
 940 bool
 941 fgDumpSceneGraphToFile(const char* filename)
 942 {
 943     return osgDB::writeNodeFile(*mRealRoot.get(), filename);
 944 }
 945
 946 bool
 947 fgDumpTerrainBranchToFile(const char* filename)
 948 {
 949     return osgDB::writeNodeFile( *globals->get_scenery()->get_terrain_branch(),
 950                                  filename );
 951 }
 952
 953 // For debugging
 954 bool
 955 fgDumpNodeToFile(osg::Node* node, const char* filename)
 956 {
 957     return osgDB::writeNodeFile(*node, filename);
 958 }
 959 // end of renderer.cxx
 960