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