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 #include <config.h>
23
24 #ifdef HAVE_WINDOWS_H
25 # include <windows.h>
26 #endif
27
28 #include <simgear/compiler.h>
29
30 #include <algorithm>
31 #include <iostream>
32 #include <map>
33 #include <vector>
34 #include <typeinfo>
35
36 #include <osg/ref_ptr>
37 #include <osg/AlphaFunc>
38 #include <osg/BlendFunc>
39 #include <osg/Camera>
40 #include <osg/CullFace>
41 #include <osg/CullStack>
42 #include <osg/Depth>
43 #include <osg/Fog>
44 #include <osg/Group>
45 #include <osg/Hint>
46 #include <osg/Light>
47 #include <osg/LightModel>
48 #include <osg/LightSource>
49 #include <osg/Material>
50 #include <osg/Math>
51 #include <osg/NodeCallback>
52 #include <osg/Notify>
53 #include <osg/PolygonMode>
54 #include <osg/PolygonOffset>
55 #include <osg/Program>
56 #include <osg/Version>
57 #include <osg/TexEnv>
58
59 #include <osgUtil/LineSegmentIntersector>
60
61 #include <osg/io_utils>
62 #include <osgDB/WriteFile>
63 #include <osgViewer/Renderer>
64
65 #include <simgear/scene/material/matlib.hxx>
66 #include <simgear/scene/material/EffectCullVisitor.hxx>
67 #include <simgear/scene/material/Effect.hxx>
68 #include <simgear/scene/material/EffectGeode.hxx>
69 #include <simgear/scene/material/EffectBuilder.hxx>
70 #include <simgear/scene/model/animation.hxx>
71 #include <simgear/scene/model/placement.hxx>
72 #include <simgear/scene/sky/sky.hxx>
73 #include <simgear/scene/util/DeletionManager.hxx>
74 #include <simgear/scene/util/SGUpdateVisitor.hxx>
75 #include <simgear/scene/util/RenderConstants.hxx>
76 #include <simgear/scene/util/SGSceneUserData.hxx>
77 #include <simgear/scene/tgdb/GroundLightManager.hxx>
78 #include <simgear/scene/tgdb/pt_lights.hxx>
79 #include <simgear/scene/tgdb/userdata.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
86 #include <Time/light.hxx>
87 #include <Time/light.hxx>
88 #include <Cockpit/panel.hxx>
89
90 #include <Model/panelnode.hxx>
91 #include <Model/modelmgr.hxx>
92 #include <Model/acmodel.hxx>
93 #include <Scenery/scenery.hxx>
94 #include <Scenery/redout.hxx>
95 #include <GUI/new_gui.hxx>
96 #include <GUI/gui.h>
97
98 #include <Instrumentation/HUD/HUD.hxx>
99 #include <Environment/precipitation_mgr.hxx>
100 #include <Environment/environment_mgr.hxx>
101 #include <Environment/ephemeris.hxx>
102
103 //#include <Main/main.hxx>
104 #include "view.hxx"
105 #include "viewmgr.hxx"
106 #include "splash.hxx"
107 #include "renderer.hxx"
108 #include "CameraGroup.hxx"
109 #include "FGEventHandler.hxx"
110 #include <Main/sentryIntegration.hxx>
111
112 #if defined(ENABLE_QQ_UI)
113 #include <GUI/QQuickDrawable.hxx>
114 #endif
115
116 #if defined(HAVE_PUI)
117 #include <Viewer/PUICamera.hxx>
118 #endif
119
120 using namespace osg;
121 using namespace simgear;
122 using namespace flightgear;
123
124 class FGHintUpdateCallback : public osg::StateAttribute::Callback {
125 public:
FGHintUpdateCallback(const char * configNode)126 FGHintUpdateCallback(const char* configNode) :
127 mConfigNode(fgGetNode(configNode, true))
128 { }
operator ()(osg::StateAttribute * stateAttribute,osg::NodeVisitor *)129 virtual void operator()(osg::StateAttribute* stateAttribute,
130 osg::NodeVisitor*)
131 {
132 assert(dynamic_cast<osg::Hint*>(stateAttribute));
133 osg::Hint* hint = static_cast<osg::Hint*>(stateAttribute);
134
135 const char* value = mConfigNode->getStringValue();
136 if (!value)
137 hint->setMode(GL_DONT_CARE);
138 else if (0 == strcmp(value, "nicest"))
139 hint->setMode(GL_NICEST);
140 else if (0 == strcmp(value, "fastest"))
141 hint->setMode(GL_FASTEST);
142 else
143 hint->setMode(GL_DONT_CARE);
144 }
145 private:
146 SGPropertyNode_ptr mConfigNode;
147 };
148
149
150 class SGHUDDrawable : public osg::Drawable {
151 public:
SGHUDDrawable()152 SGHUDDrawable()
153 {
154 // Dynamic stuff, do not store geometry
155 setUseDisplayList(false);
156 setDataVariance(Object::DYNAMIC);
157
158 osg::StateSet* stateSet = getOrCreateStateSet();
159 stateSet->setRenderBinDetails(1000, "RenderBin");
160
161 // speed optimization?
162 stateSet->setMode(GL_CULL_FACE, osg::StateAttribute::OFF);
163 stateSet->setAttribute(new osg::BlendFunc(osg::BlendFunc::SRC_ALPHA, osg::BlendFunc::ONE_MINUS_SRC_ALPHA));
164 stateSet->setMode(GL_BLEND, osg::StateAttribute::ON);
165 stateSet->setMode(GL_FOG, osg::StateAttribute::OFF);
166 stateSet->setMode(GL_DEPTH_TEST, osg::StateAttribute::OFF);
167
168 stateSet->setTextureAttribute(0, new osg::TexEnv(osg::TexEnv::MODULATE));
169 }
drawImplementation(osg::RenderInfo & renderInfo) const170 virtual void drawImplementation(osg::RenderInfo& renderInfo) const
171 { drawImplementation(*renderInfo.getState()); }
drawImplementation(osg::State & state) const172 void drawImplementation(osg::State& state) const
173 {
174 state.setActiveTextureUnit(0);
175 state.setClientActiveTextureUnit(0);
176 state.disableAllVertexArrays();
177
178 glPushAttrib(GL_ALL_ATTRIB_BITS);
179 glPushClientAttrib(~0u);
180
181 // HUD can be NULL
182 HUD *hud = static_cast<HUD*>(globals->get_subsystem("hud"));
183 if (hud) {
184 hud->draw(state);
185 }
186
187 glPopClientAttrib();
188 glPopAttrib();
189 }
190
cloneType() const191 virtual osg::Object* cloneType() const { return new SGHUDDrawable; }
clone(const osg::CopyOp &) const192 virtual osg::Object* clone(const osg::CopyOp&) const { return new SGHUDDrawable; }
193
194 private:
195 };
196
197 class FGLightSourceUpdateCallback : public osg::NodeCallback {
198 public:
199
200 /**
201 * @param isSun true if the light is the actual sun i.e., for
202 * illuminating the moon.
203 */
FGLightSourceUpdateCallback(bool isSun=false)204 FGLightSourceUpdateCallback(bool isSun = false) : _isSun(isSun) {}
FGLightSourceUpdateCallback(const FGLightSourceUpdateCallback & nc,const CopyOp & op)205 FGLightSourceUpdateCallback(const FGLightSourceUpdateCallback& nc,
206 const CopyOp& op)
207 : NodeCallback(nc, op), _isSun(nc._isSun)
208 {}
209 META_Object(flightgear,FGLightSourceUpdateCallback);
210
operator ()(osg::Node * node,osg::NodeVisitor * nv)211 virtual void operator()(osg::Node* node, osg::NodeVisitor* nv)
212 {
213 assert(dynamic_cast<osg::LightSource*>(node));
214 osg::LightSource* lightSource = static_cast<osg::LightSource*>(node);
215 osg::Light* light = lightSource->getLight();
216
217 FGLight *l = static_cast<FGLight*>(globals->get_subsystem("lighting"));
218 if (!l) {
219 // lighting is down during re-init
220 return;
221 }
222
223 if (_isSun) {
224 light->setAmbient(Vec4(0.0f, 0.0f, 0.0f, 0.0f));
225 light->setDiffuse(Vec4(1.0f, 1.0f, 1.0f, 1.0f));
226 light->setSpecular(Vec4(0.0f, 0.0f, 0.0f, 0.0f));
227 } else {
228 light->setAmbient(toOsg(l->scene_ambient()));
229 light->setDiffuse(toOsg(l->scene_diffuse()));
230 light->setSpecular(toOsg(l->scene_specular()));
231 }
232 osg::Vec4f position(l->sun_vec()[0], l->sun_vec()[1], l->sun_vec()[2], 0);
233 light->setPosition(position);
234
235 traverse(node, nv);
236 }
237 private:
238 const bool _isSun;
239 };
240
241 class FGWireFrameModeUpdateCallback : public osg::StateAttribute::Callback {
242 public:
FGWireFrameModeUpdateCallback()243 FGWireFrameModeUpdateCallback() :
244 mWireframe(fgGetNode("/sim/rendering/wireframe", true))
245 { }
operator ()(osg::StateAttribute * stateAttribute,osg::NodeVisitor *)246 virtual void operator()(osg::StateAttribute* stateAttribute,
247 osg::NodeVisitor*)
248 {
249 assert(dynamic_cast<osg::PolygonMode*>(stateAttribute));
250 osg::PolygonMode* polygonMode;
251 polygonMode = static_cast<osg::PolygonMode*>(stateAttribute);
252
253 if (mWireframe->getBoolValue())
254 polygonMode->setMode(osg::PolygonMode::FRONT_AND_BACK,
255 osg::PolygonMode::LINE);
256 else
257 polygonMode->setMode(osg::PolygonMode::FRONT_AND_BACK,
258 osg::PolygonMode::FILL);
259 }
260 private:
261 SGPropertyNode_ptr mWireframe;
262 };
263
264 class FGLightModelUpdateCallback : public osg::StateAttribute::Callback {
265 public:
FGLightModelUpdateCallback()266 FGLightModelUpdateCallback() :
267 mHighlights(fgGetNode("/sim/rendering/specular-highlight", true))
268 { }
operator ()(osg::StateAttribute * stateAttribute,osg::NodeVisitor *)269 virtual void operator()(osg::StateAttribute* stateAttribute,
270 osg::NodeVisitor*)
271 {
272 assert(dynamic_cast<osg::LightModel*>(stateAttribute));
273 osg::LightModel* lightModel;
274 lightModel = static_cast<osg::LightModel*>(stateAttribute);
275
276 #if 0
277 FGLight *l = static_cast<FGLight*>(globals->get_subsystem("lighting"));
278 lightModel->setAmbientIntensity(toOsg(l->scene_ambient());
279 #else
280 lightModel->setAmbientIntensity(osg::Vec4(0, 0, 0, 1));
281 #endif
282 lightModel->setTwoSided(true);
283 lightModel->setLocalViewer(false);
284
285 if (mHighlights->getBoolValue()) {
286 lightModel->setColorControl(osg::LightModel::SEPARATE_SPECULAR_COLOR);
287 } else {
288 lightModel->setColorControl(osg::LightModel::SINGLE_COLOR);
289 }
290 }
291 private:
292 SGPropertyNode_ptr mHighlights;
293 };
294
295 class FGFogEnableUpdateCallback : public osg::StateSet::Callback {
296 public:
FGFogEnableUpdateCallback()297 FGFogEnableUpdateCallback() :
298 mFogEnabled(fgGetNode("/sim/rendering/fog", true))
299 { }
operator ()(osg::StateSet * stateSet,osg::NodeVisitor *)300 virtual void operator()(osg::StateSet* stateSet, osg::NodeVisitor*)
301 {
302 if (strcmp(mFogEnabled->getStringValue(), "disabled") == 0) {
303 stateSet->setMode(GL_FOG, osg::StateAttribute::OFF);
304 } else {
305 stateSet->setMode(GL_FOG, osg::StateAttribute::ON);
306 }
307 }
308 private:
309 SGPropertyNode_ptr mFogEnabled;
310 };
311
312 class FGFogUpdateCallback : public osg::StateAttribute::Callback {
313 public:
operator ()(osg::StateAttribute * sa,osg::NodeVisitor * nv)314 virtual void operator () (osg::StateAttribute* sa, osg::NodeVisitor* nv)
315 {
316 assert(dynamic_cast<SGUpdateVisitor*>(nv));
317 assert(dynamic_cast<osg::Fog*>(sa));
318 SGUpdateVisitor* updateVisitor = static_cast<SGUpdateVisitor*>(nv);
319 osg::Fog* fog = static_cast<osg::Fog*>(sa);
320 fog->setMode(osg::Fog::EXP2);
321 fog->setColor(toOsg(updateVisitor->getFogColor()));
322 fog->setDensity(updateVisitor->getFogExp2Density());
323 }
324 };
325
326 // update callback for the switch node guarding that splash
327 class FGScenerySwitchCallback : public osg::NodeCallback {
328 public:
operator ()(osg::Node * node,osg::NodeVisitor * nv)329 virtual void operator()(osg::Node* node, osg::NodeVisitor* nv)
330 {
331 assert(dynamic_cast<osg::Switch*>(node));
332 osg::Switch* sw = static_cast<osg::Switch*>(node);
333
334 bool enabled = scenery_enabled;
335 sw->setValue(0, enabled);
336 if (!enabled)
337 return;
338 traverse(node, nv);
339 }
340
341 static bool scenery_enabled;
342 };
343
344 bool FGScenerySwitchCallback::scenery_enabled = false;
345
FGRenderer()346 FGRenderer::FGRenderer() :
347 _sky(NULL),
348 MaximumTextureSize(0),
349 _ambientFactor( new osg::Uniform( "fg_SunAmbientColor", osg::Vec4f() ) ),
350 _sunDiffuse( new osg::Uniform( "fg_SunDiffuseColor", osg::Vec4f() ) ),
351 _sunSpecular( new osg::Uniform( "fg_SunSpecularColor", osg::Vec4f() ) ),
352 _sunDirection( new osg::Uniform( "fg_SunDirection", osg::Vec3f() ) ),
353 _planes( new osg::Uniform( "fg_Planes", osg::Vec3f() ) ),
354 _fogColor( new osg::Uniform( "fg_FogColor", osg::Vec4f(1.0, 1.0, 1.0, 1.0) ) ),
355 _fogDensity( new osg::Uniform( "fg_FogDensity", 0.0001f ) ),
356 _shadowNumber( new osg::Uniform( "fg_ShadowNumber", (int)4 ) ),
357 _shadowDistances( new osg::Uniform( "fg_ShadowDistances", osg::Vec4f(5.0, 50.0, 500.0, 5000.0 ) ) ),
358 _depthInColor( new osg::Uniform( "fg_DepthInColor", false ) )
359 {
360 // it's not the real root, whatever that means
361 _root = new osg::Group;
362 _root->setName("fakeRoot");
363
364 _updateVisitor = new SGUpdateVisitor;
365
366 // when Rembrandt is enabled, we use this group to access the whole
367 // scene. Since the only child is the _viewerSceneRoot, we could
368 // simply copy the reference, we don't need the additional group.
369 _deferredRealRoot = new osg::Group;
370
371 _numCascades = 4;
372 _cascadeFar[0] = 5.f;
373 _cascadeFar[1] = 50.f;
374 _cascadeFar[2] = 500.f;
375 _cascadeFar[3] = 5000.f;
376 }
377
~FGRenderer()378 FGRenderer::~FGRenderer()
379 {
380 SGPropertyChangeListenerVec::iterator i = _listeners.begin();
381 for (; i != _listeners.end(); ++i) {
382 delete *i;
383 }
384
385 // replace the viewer's scene completely
386 if (getViewer()) {
387 getViewer()->setSceneData(new osg::Group);
388 }
389
390 delete _sky;
391 }
392
393 // Initialize various GL/view parameters
394 void
preinit(void)395 FGRenderer::preinit( void )
396 {
397 // important that we reset the viewer sceneData here, to ensure the reference
398 // time for everything is in sync; otherwise on reset the Viewer and
399 // GraphicsWindow clocks are out of sync.
400 osgViewer::Viewer* viewer = getViewer();
401 viewer->setName("osgViewer");
402 _viewerSceneRoot = new osg::Group;
403 _viewerSceneRoot->setName("viewerSceneRoot");
404 viewer->setSceneData(_viewerSceneRoot);
405
406 _quickDrawable = nullptr;
407 _splash = new SplashScreen;
408 if (_classicalRenderer) {
409 _viewerSceneRoot->addChild(_splash);
410 } else {
411 for ( CameraGroup::CameraIterator ii = CameraGroup::getDefault()->camerasBegin();
412 ii != CameraGroup::getDefault()->camerasEnd();
413 ++ii )
414 {
415 CameraInfo* info = ii->get();
416 Camera* camera = info->getCamera(DISPLAY_CAMERA);
417 if (camera == 0) continue;
418
419 camera->addChild(_splash);
420 }
421 }
422
423 _frameStamp = new osg::FrameStamp;
424 viewer->setFrameStamp(_frameStamp.get());
425 // Scene doesn't seem to pass the frame stamp to the update
426 // visitor automatically.
427 _updateVisitor->setFrameStamp(_frameStamp.get());
428 viewer->setUpdateVisitor(_updateVisitor.get());
429 fgSetDouble("/sim/startup/splash-alpha", 1.0);
430
431 // hide the menubar if it overlaps the window, so the splash screen
432 // is completely visible. We reset this value when the splash screen
433 // is fading out.
434 fgSetBool("/sim/menubar/overlap-hide", true);
435 }
436
437 class ShadowMapSizeListener : public SGPropertyChangeListener {
438 public:
valueChanged(SGPropertyNode * node)439 virtual void valueChanged(SGPropertyNode* node) {
440 globals->get_renderer()->updateShadowMapSize(node->getIntValue());
441 }
442 };
443
444 class ShadowEnabledListener : public SGPropertyChangeListener {
445 public:
valueChanged(SGPropertyNode * node)446 virtual void valueChanged(SGPropertyNode* node) {
447 globals->get_renderer()->enableShadows(node->getBoolValue());
448 }
449 };
450
451 class ShadowNumListener : public SGPropertyChangeListener {
452 public:
valueChanged(SGPropertyNode * node)453 virtual void valueChanged(SGPropertyNode* node) {
454 globals->get_renderer()->updateCascadeNumber(node->getIntValue());
455 }
456 };
457
458 class ShadowRangeListener : public SGPropertyChangeListener {
459 public:
valueChanged(SGPropertyNode * node)460 virtual void valueChanged(SGPropertyNode* node) {
461 globals->get_renderer()->updateCascadeFar(node->getIndex(), node->getFloatValue());
462 }
463 };
464
465 class PointSpriteListener : public SGPropertyChangeListener {
466 public:
valueChanged(SGPropertyNode * node)467 virtual void valueChanged(SGPropertyNode* node) {
468 static SGSceneFeatures* sceneFeatures = SGSceneFeatures::instance();
469 sceneFeatures->setEnablePointSpriteLights(node->getIntValue());
470 }
471 };
472
473 class DistanceAttenuationListener : public SGPropertyChangeListener {
474 public:
valueChanged(SGPropertyNode * node)475 virtual void valueChanged(SGPropertyNode* node) {
476 static SGSceneFeatures* sceneFeatures = SGSceneFeatures::instance();
477 sceneFeatures->setEnableDistanceAttenuationLights(node->getIntValue());
478 }
479 };
480
481 class DirectionalLightsListener : public SGPropertyChangeListener {
482 public:
valueChanged(SGPropertyNode * node)483 virtual void valueChanged(SGPropertyNode* node) {
484 static SGSceneFeatures* sceneFeatures = SGSceneFeatures::instance();
485 sceneFeatures->setEnableTriangleDirectionalLights(node->getIntValue());
486 }
487 };
488
489 void
addChangeListener(SGPropertyChangeListener * l,const char * path)490 FGRenderer::addChangeListener(SGPropertyChangeListener* l, const char* path)
491 {
492 _listeners.push_back(l);
493 fgAddChangeListener(l, path);
494 }
495
496 void
init(void)497 FGRenderer::init( void )
498 {
499 if (!eventHandler)
500 eventHandler = new FGEventHandler();
501
502 sgUserDataInit( globals->get_props() );
503
504 _classicalRenderer = !fgGetBool("/sim/rendering/rembrandt/enabled", false);
505 _shadowMapSize = fgGetInt( "/sim/rendering/shadows/map-size", 4096 );
506 addChangeListener( new ShadowMapSizeListener, "/sim/rendering/shadows/map-size" );
507 addChangeListener( new ShadowEnabledListener, "/sim/rendering/shadows/enabled" );
508 ShadowRangeListener* srl = new ShadowRangeListener;
509 addChangeListener(srl, "/sim/rendering/shadows/cascade-far-m[0]");
510 fgAddChangeListener(srl, "/sim/rendering/shadows/cascade-far-m[1]");
511 fgAddChangeListener(srl, "/sim/rendering/shadows/cascade-far-m[2]");
512 fgAddChangeListener(srl, "/sim/rendering/shadows/cascade-far-m[3]");
513 addChangeListener(new ShadowNumListener, "/sim/rendering/shadows/num-cascades");
514 _numCascades = fgGetInt("/sim/rendering/shadows/num-cascades", 4);
515 _cascadeFar[0] = fgGetFloat("/sim/rendering/shadows/cascade-far-m[0]", 5.0f);
516 _cascadeFar[1] = fgGetFloat("/sim/rendering/shadows/cascade-far-m[1]", 50.0f);
517 _cascadeFar[2] = fgGetFloat("/sim/rendering/shadows/cascade-far-m[2]", 500.0f);
518 _cascadeFar[3] = fgGetFloat("/sim/rendering/shadows/cascade-far-m[3]", 5000.0f);
519 updateCascadeNumber(_numCascades);
520 updateCascadeFar(0, _cascadeFar[0]);
521 updateCascadeFar(1, _cascadeFar[1]);
522 updateCascadeFar(2, _cascadeFar[2]);
523 updateCascadeFar(3, _cascadeFar[3]);
524 _useColorForDepth = fgGetBool( "/sim/rendering/rembrandt/use-color-for-depth", false );
525 _depthInColor->set( _useColorForDepth );
526
527 _renderer = fgGetString("/sim/rendering/rembrandt/renderer", "default-pipeline");
528 if (!_classicalRenderer)
529 _pipeline = makeRenderingPipeline(_renderer, 0);
530 _scenery_loaded = fgGetNode("/sim/sceneryloaded", true);
531 _position_finalized = fgGetNode("/sim/position-finalized", true);
532
533 _panel_hotspots = fgGetNode("/sim/panel-hotspots", true);
534 _virtual_cockpit = fgGetNode("/sim/virtual-cockpit", true);
535
536 _sim_delta_sec = fgGetNode("/sim/time/delta-sec", true);
537
538 _xsize = fgGetNode("/sim/startup/xsize", true);
539 _ysize = fgGetNode("/sim/startup/ysize", true);
540 _splash_alpha = fgGetNode("/sim/startup/splash-alpha", true);
541
542 _horizon_effect = fgGetNode("/sim/rendering/horizon-effect", true);
543
544 _altitude_ft = fgGetNode("/position/altitude-ft", true);
545
546 _cloud_status = fgGetNode("/environment/clouds/status", true);
547 _visibility_m = fgGetNode("/environment/visibility-m", true);
548
549 // configure the lighting related parameters and add change listeners.
550 bool use_point_sprites = fgGetBool("/sim/rendering/point-sprites", true);
551 bool distance_attenuation = fgGetBool("/sim/rendering/distance-attenuation", false);
552 bool triangles = fgGetBool("/sim/rendering/triangle-directional-lights", true);
553 SGConfigureDirectionalLights(use_point_sprites, distance_attenuation, triangles);
554
555 addChangeListener(new PointSpriteListener, "/sim/rendering/point-sprites");
556 addChangeListener(new DistanceAttenuationListener, "/sim/rendering/distance-attenuation");
557 addChangeListener(new DirectionalLightsListener, "/sim/rendering/triangle-directional-lights");
558
559 if (const char* tc = fgGetString("/sim/rendering/texture-compression", NULL)) {
560 if (strcmp(tc, "false") == 0 || strcmp(tc, "off") == 0 ||
561 strcmp(tc, "0") == 0 || strcmp(tc, "no") == 0 ||
562 strcmp(tc, "none") == 0) {
563 SGSceneFeatures::instance()->setTextureCompression(SGSceneFeatures::DoNotUseCompression);
564 } else if (strcmp(tc, "arb") == 0) {
565 SGSceneFeatures::instance()->setTextureCompression(SGSceneFeatures::UseARBCompression);
566 } else if (strcmp(tc, "dxt1") == 0) {
567 SGSceneFeatures::instance()->setTextureCompression(SGSceneFeatures::UseDXT1Compression);
568 } else if (strcmp(tc, "dxt3") == 0) {
569 SGSceneFeatures::instance()->setTextureCompression(SGSceneFeatures::UseDXT3Compression);
570 } else if (strcmp(tc, "dxt5") == 0) {
571 SGSceneFeatures::instance()->setTextureCompression(SGSceneFeatures::UseDXT5Compression);
572 } else {
573 SG_LOG(SG_VIEW, SG_WARN, "Unknown texture compression setting!");
574 }
575 }
576 SGSceneFeatures::instance()->setTextureCompressionPath(globals->get_texture_cache_dir());
577 // create sky, but can't build until setupView, since we depend
578 // on other subsystems to be inited, eg Ephemeris
579 _sky = new SGSky;
580
581 const SGPath texture_path = globals->get_fg_root() / "Textures" / "Sky";
582 for (int i = 0; i < FGEnvironmentMgr::MAX_CLOUD_LAYERS; i++) {
583 SGCloudLayer * layer = new SGCloudLayer(texture_path);
584 _sky->add_cloud_layer(layer);
585 }
586
587 _sky->set_texture_path( texture_path );
588
589 if (!_classicalRenderer) {
590 eventHandler->setChangeStatsCameraRenderOrder( true );
591 }
592 }
593
installCullVisitor(Camera * camera)594 void installCullVisitor(Camera* camera)
595 {
596 osgViewer::Renderer* renderer
597 = static_cast<osgViewer::Renderer*>(camera->getRenderer());
598 for (int i = 0; i < 2; ++i) {
599 osgUtil::SceneView* sceneView = renderer->getSceneView(i);
600
601 osg::ref_ptr<osgUtil::CullVisitor::Identifier> identifier;
602 identifier = sceneView->getCullVisitor()->getIdentifier();
603 sceneView->setCullVisitor(new simgear::EffectCullVisitor);
604 sceneView->getCullVisitor()->setIdentifier(identifier.get());
605
606 identifier = sceneView->getCullVisitorLeft()->getIdentifier();
607 sceneView->setCullVisitorLeft(sceneView->getCullVisitor()->clone());
608 sceneView->getCullVisitorLeft()->setIdentifier(identifier.get());
609
610 identifier = sceneView->getCullVisitorRight()->getIdentifier();
611 sceneView->setCullVisitorRight(sceneView->getCullVisitor()->clone());
612 sceneView->getCullVisitorRight()->setIdentifier(identifier.get());
613
614 }
615 }
616
617 CameraInfo*
buildRenderingPipeline(CameraGroup * cgroup,unsigned flags,Camera * camera,const Matrix & view,const Matrix & projection,osg::GraphicsContext * gc,bool useMasterSceneData)618 FGRenderer::buildRenderingPipeline(CameraGroup* cgroup, unsigned flags, Camera* camera,
619 const Matrix& view,
620 const Matrix& projection,
621 osg::GraphicsContext* gc,
622 bool useMasterSceneData)
623 {
624 CameraInfo* info = 0;
625 if (!_classicalRenderer && (flags & (CameraGroup::GUI | CameraGroup::ORTHO)) == 0)
626 info = buildDeferredPipeline( cgroup, flags, camera, view, projection, gc );
627
628 if (info) {
629 return info;
630 } else {
631 if ((flags & (CameraGroup::GUI | CameraGroup::ORTHO)) == 0)
632 _classicalRenderer = true;
633 return buildClassicalPipeline( cgroup, flags, camera, view, projection, useMasterSceneData );
634 }
635 }
636
637 CameraInfo*
buildClassicalPipeline(CameraGroup * cgroup,unsigned flags,osg::Camera * camera,const osg::Matrix & view,const osg::Matrix & projection,bool useMasterSceneData)638 FGRenderer::buildClassicalPipeline(CameraGroup* cgroup, unsigned flags, osg::Camera* camera,
639 const osg::Matrix& view,
640 const osg::Matrix& projection,
641 bool useMasterSceneData)
642 {
643 CameraInfo* info = new CameraInfo(flags);
644 // The camera group will always update the camera
645 camera->setReferenceFrame(Transform::ABSOLUTE_RF);
646 info->name = "classic";
647
648 Camera* farCamera = 0;
649 if ((flags & (CameraGroup::GUI | CameraGroup::ORTHO)) == 0) {
650 farCamera = new Camera;
651 farCamera->setName("farCamera");
652 farCamera->setAllowEventFocus(camera->getAllowEventFocus());
653 farCamera->setGraphicsContext(camera->getGraphicsContext());
654 farCamera->setCullingMode(camera->getCullingMode());
655 farCamera->setInheritanceMask(camera->getInheritanceMask());
656 farCamera->setReferenceFrame(Transform::ABSOLUTE_RF);
657 // Each camera's viewport is written when the window is
658 // resized; if the the viewport isn't copied here, it gets updated
659 // twice and ends up with the wrong value.
660 farCamera->setViewport(simgear::clone(camera->getViewport()));
661 farCamera->setDrawBuffer(camera->getDrawBuffer());
662 farCamera->setReadBuffer(camera->getReadBuffer());
663 farCamera->setRenderTargetImplementation(
664 camera->getRenderTargetImplementation());
665 const Camera::BufferAttachmentMap& bufferMap
666 = camera->getBufferAttachmentMap();
667 if (bufferMap.count(Camera::COLOR_BUFFER) != 0) {
668 farCamera->attach(
669 Camera::COLOR_BUFFER,
670 bufferMap.find(Camera::COLOR_BUFFER)->second._texture.get());
671 }
672 cgroup->getViewer()->addSlave(farCamera, projection, view, useMasterSceneData);
673 installCullVisitor(farCamera);
674 int farSlaveIndex = cgroup->getViewer()->getNumSlaves() - 1;
675 info->addCamera( FAR_CAMERA, farCamera, farSlaveIndex );
676 farCamera->setRenderOrder(Camera::POST_RENDER, farSlaveIndex);
677 camera->setCullMask(camera->getCullMask() & ~simgear::BACKGROUND_BIT);
678 camera->setClearMask(GL_DEPTH_BUFFER_BIT);
679 }
680 cgroup->getViewer()->addSlave(camera, projection, view, useMasterSceneData);
681 installCullVisitor(camera);
682 int slaveIndex = cgroup->getViewer()->getNumSlaves() - 1;
683 info->addCamera( MAIN_CAMERA, camera, slaveIndex );
684 camera->setRenderOrder(Camera::POST_RENDER, slaveIndex);
685 cgroup->addCamera(info);
686 return info;
687 }
688
689 class FGDeferredRenderingCameraCullCallback : public osg::NodeCallback {
690 public:
FGDeferredRenderingCameraCullCallback(const std::string & k,CameraInfo * i,bool nd=false)691 FGDeferredRenderingCameraCullCallback( const std::string& k, CameraInfo* i, bool nd = false ) : kind( k ), info( i ), needsDuDv(nd) {}
operator ()(osg::Node * n,osg::NodeVisitor * nv)692 virtual void operator()( osg::Node *n, osg::NodeVisitor *nv) {
693 simgear::EffectCullVisitor* cv = dynamic_cast<simgear::EffectCullVisitor*>(nv);
694 osg::Camera* camera = static_cast<osg::Camera*>(n);
695
696 cv->clearBufferList();
697 for (RenderBufferMap::iterator ii = info->buffers.begin(); ii != info->buffers.end(); ++ii) {
698 cv->addBuffer(ii->first, ii->second.texture);
699 }
700
701 if ( !info->getRenderStageInfo(kind).fullscreen )
702 info->setMatrices( camera );
703
704 if (needsDuDv) {
705 osg::Matrix projInverse;
706 info->projInverse->get( projInverse );
707
708 osg::Vec4 p0 = osg::Vec4( -1.0, -1.0, 0.0, 1.0 ) * projInverse;
709 info->du->set( osg::Vec4( 1.0, -1.0, 0.0, 1.0 ) * projInverse - p0 );
710 info->dv->set( osg::Vec4( -1.0, 1.0, 0.0, 1.0 ) * projInverse - p0 );
711 }
712
713 cv->traverse( *camera );
714
715 if ( kind == GEOMETRY_CAMERA ) {
716 // Remove transparent bins. They will be renderer in the additional light stage (side effect)
717 osgUtil::RenderStage* renderStage = cv->getRenderStage();
718 osgUtil::RenderBin::RenderBinList& rbl = renderStage->getRenderBinList();
719 for (osgUtil::RenderBin::RenderBinList::iterator rbi = rbl.begin(); rbi != rbl.end(); ) {
720 if (rbi->second->getSortMode() == osgUtil::RenderBin::SORT_BACK_TO_FRONT) {
721 rbl.erase( rbi++ );
722 } else {
723 ++rbi;
724 }
725 }
726 } else if ( kind == LIGHTING_CAMERA ) {
727 osg::ref_ptr<osg::Camera> mainShadowCamera = info->getCamera( SHADOW_CAMERA );
728 if (mainShadowCamera.valid()) {
729 osg::Switch* grp = mainShadowCamera->getChild(0)->asSwitch();
730 for (int i = 0; i < 4; ++i ) {
731 if (!grp->getValue(i))
732 continue;
733
734 osg::Camera* cascadeCam = static_cast<osg::Camera*>( grp->getChild(i) );
735 osg::Matrixf shadowMatrix = camera->getInverseViewMatrix() *
736 cascadeCam->getViewMatrix() *
737 cascadeCam->getProjectionMatrix() *
738 osg::Matrix::translate(1.0, 1.0, 1.0) *
739 osg::Matrix::scale(0.5f, 0.5f, 0.5f);
740
741 info->shadowMatrix[i]->set( shadowMatrix );
742 }
743 }
744 }
745 }
746
747 private:
748 std::string kind;
749 CameraInfo* info;
750 bool needsDuDv;
751 };
752
buildDeferredBuffer(GLint internalFormat,GLenum sourceFormat,GLenum sourceType,GLenum wrapMode,bool shadowComparison=false)753 osg::Texture2D* buildDeferredBuffer(GLint internalFormat, GLenum sourceFormat, GLenum sourceType, GLenum wrapMode, bool shadowComparison = false)
754 {
755 osg::Texture2D* tex = new osg::Texture2D;
756 tex->setResizeNonPowerOfTwoHint( false );
757 tex->setInternalFormat( internalFormat );
758 tex->setShadowComparison(shadowComparison);
759 if (shadowComparison) {
760 tex->setShadowTextureMode(osg::Texture2D::LUMINANCE);
761 tex->setBorderColor(osg::Vec4(1.0f,1.0f,1.0f,1.0f));
762 }
763 tex->setSourceFormat(sourceFormat);
764 tex->setSourceType(sourceType);
765 tex->setFilter( osg::Texture2D::MIN_FILTER, osg::Texture2D::LINEAR );
766 tex->setFilter( osg::Texture2D::MAG_FILTER, osg::Texture2D::LINEAR );
767 tex->setWrap( osg::Texture::WRAP_S, (osg::Texture::WrapMode)wrapMode );
768 tex->setWrap( osg::Texture::WRAP_T, (osg::Texture::WrapMode)wrapMode );
769 return tex;
770 }
771
attachBufferToCamera(CameraInfo * info,osg::Camera * camera,osg::Camera::BufferComponent c,const std::string & ck,const std::string & bk)772 void attachBufferToCamera( CameraInfo* info, osg::Camera* camera, osg::Camera::BufferComponent c, const std::string& ck, const std::string& bk )
773 {
774 camera->attach( c, info->getBuffer(bk) );
775 info->getRenderStageInfo(ck).buffers.insert( std::make_pair( c, bk ) );
776 }
777
buildAttachments(CameraInfo * info,osg::Camera * camera,const std::string & name,const std::vector<ref_ptr<FGRenderingPipeline::Attachment>> & attachments)778 void buildAttachments(CameraInfo* info, osg::Camera* camera, const std::string& name, const std::vector<ref_ptr<FGRenderingPipeline::Attachment> > &attachments) {
779 for (auto attachment : attachments) {
780 if (attachment->valid())
781 attachBufferToCamera( info, camera, attachment->component, name, attachment->buffer );
782 }
783 }
784
buildDeferredGeometryCamera(CameraInfo * info,osg::GraphicsContext * gc,const std::string & name,const std::vector<ref_ptr<FGRenderingPipeline::Attachment>> & attachments)785 osg::Camera* FGRenderer::buildDeferredGeometryCamera( CameraInfo* info, osg::GraphicsContext* gc, const std::string& name, const std::vector<ref_ptr<FGRenderingPipeline::Attachment> > &attachments )
786 {
787 osg::Camera* camera = new osg::Camera;
788 info->addCamera(name, camera );
789
790 camera->setCullMask( ~simgear::MODELLIGHT_BIT );
791 camera->setName( "GeometryC" );
792 camera->setReferenceFrame(osg::Transform::ABSOLUTE_RF);
793 camera->setGraphicsContext( gc );
794 camera->setCullCallback( new FGDeferredRenderingCameraCullCallback( name, info ) );
795 camera->setClearMask( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
796 camera->setClearColor( osg::Vec4( 0., 0., 0., 0. ) );
797 camera->setClearDepth( 1.0 );
798 camera->setColorMask(true, true, true, true);
799 camera->setRenderTargetImplementation( osg::Camera::FRAME_BUFFER_OBJECT );
800 camera->setRenderOrder(osg::Camera::NESTED_RENDER, 0);
801 camera->setViewport( new osg::Viewport );
802 buildAttachments(info, camera, name, attachments);
803 camera->setDrawBuffer(GL_FRONT);
804 camera->setReadBuffer(GL_FRONT);
805
806 osg::StateSet* ss = camera->getOrCreateStateSet();
807 ss->addUniform( _depthInColor );
808
809 camera->addChild( _deferredRealRoot.get() );
810
811 return camera;
812 }
813
setShadowCascadeStateSet(osg::Camera * cam)814 static void setShadowCascadeStateSet( osg::Camera* cam ) {
815 osg::StateSet* ss = cam->getOrCreateStateSet();
816 ss->setAttribute( new osg::PolygonOffset( 1.1f, 5.0f ), osg::StateAttribute::ON | osg::StateAttribute::OVERRIDE );
817 ss->setMode( GL_POLYGON_OFFSET_FILL, osg::StateAttribute::ON | osg::StateAttribute::OVERRIDE );
818 ss->setRenderBinDetails( 0, "RenderBin", osg::StateSet::OVERRIDE_RENDERBIN_DETAILS );
819 ss->setAttributeAndModes( new osg::AlphaFunc( osg::AlphaFunc::GREATER, 0.05 ), osg::StateAttribute::ON | osg::StateAttribute::OVERRIDE );
820 ss->setAttributeAndModes( new osg::ColorMask( false, false, false, false ), osg::StateAttribute::ON | osg::StateAttribute::OVERRIDE );
821 ss->setAttributeAndModes( new osg::CullFace( osg::CullFace::FRONT ), osg::StateAttribute::ON | osg::StateAttribute::OVERRIDE );
822 osg::Program* program = new osg::Program;
823 ss->setAttribute( program, osg::StateAttribute::OVERRIDE | osg::StateAttribute::ON );
824 ss->setMode( GL_LIGHTING, osg::StateAttribute::OVERRIDE | osg::StateAttribute::OFF );
825 ss->setMode( GL_BLEND, osg::StateAttribute::OVERRIDE | osg::StateAttribute::OFF );
826 //ss->setTextureMode( 0, GL_TEXTURE_2D, osg::StateAttribute::OVERRIDE | osg::StateAttribute::ON );
827 ss->setTextureMode( 0, GL_TEXTURE_3D, osg::StateAttribute::OVERRIDE | osg::StateAttribute::OFF );
828 ss->setTextureMode( 1, GL_TEXTURE_2D, osg::StateAttribute::OVERRIDE | osg::StateAttribute::OFF );
829 ss->setTextureMode( 1, GL_TEXTURE_3D, osg::StateAttribute::OVERRIDE | osg::StateAttribute::OFF );
830 ss->setTextureMode( 2, GL_TEXTURE_2D, osg::StateAttribute::OVERRIDE | osg::StateAttribute::OFF );
831 ss->setTextureMode( 2, GL_TEXTURE_3D, osg::StateAttribute::OVERRIDE | osg::StateAttribute::OFF );
832 }
833
createShadowCascadeCamera(int no,int cascadeSize)834 static osg::Camera* createShadowCascadeCamera( int no, int cascadeSize ) {
835 osg::Camera* cascadeCam = new osg::Camera;
836 setShadowCascadeStateSet( cascadeCam );
837
838 std::ostringstream oss;
839 oss << "CascadeCamera" << (no + 1);
840 cascadeCam->setName( oss.str() );
841 cascadeCam->setClearMask(0);
842 cascadeCam->setCullMask( simgear::CASTSHADOW_BIT );
843 cascadeCam->setCullingMode( cascadeCam->getCullingMode() | osg::CullSettings::SMALL_FEATURE_CULLING );
844 cascadeCam->setAllowEventFocus(false);
845 cascadeCam->setReferenceFrame(osg::Transform::ABSOLUTE_RF_INHERIT_VIEWPOINT);
846 cascadeCam->setRenderOrder(osg::Camera::NESTED_RENDER);
847 cascadeCam->setComputeNearFarMode(osg::CullSettings::DO_NOT_COMPUTE_NEAR_FAR);
848 cascadeCam->setViewport( int( no / 2 ) * cascadeSize, (no & 1) * cascadeSize, cascadeSize, cascadeSize );
849 return cascadeCam;
850 }
851
buildDeferredShadowCamera(CameraInfo * info,osg::GraphicsContext * gc,const std::string & name,const std::vector<ref_ptr<FGRenderingPipeline::Attachment>> & attachments)852 osg::Camera* FGRenderer::buildDeferredShadowCamera( CameraInfo* info, osg::GraphicsContext* gc, const std::string& name, const std::vector<ref_ptr<FGRenderingPipeline::Attachment> > &attachments )
853 {
854 osg::Camera* mainShadowCamera = new osg::Camera;
855 info->addCamera(name, mainShadowCamera, 0.0f );
856
857 mainShadowCamera->setName( "ShadowC" );
858 mainShadowCamera->setClearMask( GL_DEPTH_BUFFER_BIT );
859 mainShadowCamera->setClearDepth( 1.0 );
860 mainShadowCamera->setAllowEventFocus(false);
861 mainShadowCamera->setGraphicsContext(gc);
862 mainShadowCamera->setRenderTargetImplementation( osg::Camera::FRAME_BUFFER_OBJECT );
863 buildAttachments(info, mainShadowCamera, name, attachments);
864 mainShadowCamera->setComputeNearFarMode(osg::Camera::DO_NOT_COMPUTE_NEAR_FAR);
865 mainShadowCamera->setReferenceFrame(osg::Transform::ABSOLUTE_RF);
866 mainShadowCamera->setProjectionMatrix(osg::Matrix::identity());
867 mainShadowCamera->setCullingMode( osg::CullSettings::NO_CULLING );
868 mainShadowCamera->setViewport( 0, 0, _shadowMapSize, _shadowMapSize );
869 mainShadowCamera->setDrawBuffer(GL_FRONT);
870 mainShadowCamera->setReadBuffer(GL_FRONT);
871 mainShadowCamera->setRenderOrder(Camera::NESTED_RENDER, 1);
872
873 osg::Switch* shadowSwitch = new osg::Switch;
874 mainShadowCamera->addChild( shadowSwitch );
875
876 for (int i = 0; i < 4; ++i ) {
877 osg::Camera* cascadeCam = createShadowCascadeCamera( i, _shadowMapSize/2 );
878 cascadeCam->addChild( _deferredRealRoot.get() );
879 shadowSwitch->addChild( cascadeCam );
880 }
881 if (fgGetBool("/sim/rendering/shadows/enabled", true))
882 shadowSwitch->setAllChildrenOn();
883 else
884 shadowSwitch->setAllChildrenOff();
885
886 return mainShadowCamera;
887 }
888
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)889 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)
890 {
891 osg::Camera* cascade = static_cast<osg::Camera*>( grp->getChild(idx) );
892 osg::Matrixd &viewMatrix = cascade->getViewMatrix();
893 osg::Matrixd &projectionMatrix = cascade->getProjectionMatrix();
894
895 osg::BoundingSphere bs;
896 bs.expandBy(osg::Vec3(left,bottom,-zNear) * f1);
897 bs.expandBy(osg::Vec3(right,top,-zNear) * f2);
898 bs.expandBy(osg::Vec3(left,bottom,-zNear) * f2);
899 bs.expandBy(osg::Vec3(right,top,-zNear) * f1);
900
901 osg::Vec4 aim = osg::Vec4(bs.center(), 1.0) * camera->getInverseViewMatrix();
902
903 projectionMatrix.makeOrtho( -bs.radius(), bs.radius(), -bs.radius(), bs.radius(), 1., 15000.0 );
904 osg::Vec3 position( aim.x(), aim.y(), aim.z() );
905 viewMatrix.makeLookAt( position + (getSunDirection() * 10000.0), position, position );
906 }
907
getSunDirection() const908 osg::Vec3 FGRenderer::getSunDirection() const
909 {
910 osg::Vec3 val;
911 _sunDirection->get( val );
912 return val;
913 }
914
updateShadowCamera(const CameraInfo * info,const osg::Vec3d & position)915 void FGRenderer::updateShadowCamera(const CameraInfo* info, const osg::Vec3d& position)
916 {
917 ref_ptr<Camera> mainShadowCamera = info->getCamera( SHADOW_CAMERA );
918 if (mainShadowCamera.valid()) {
919 ref_ptr<Switch> shadowSwitch = mainShadowCamera->getChild( 0 )->asSwitch();
920 osg::Vec3d up = position,
921 dir = getSunDirection();
922 up.normalize();
923 dir.normalize();
924 // cos(100 deg) == -0.17
925 if (up * dir < -0.17 || !fgGetBool("/sim/rendering/shadows/enabled", true)) {
926 shadowSwitch->setAllChildrenOff();
927 } else {
928 double left,right,bottom,top,zNear,zFar;
929 ref_ptr<Camera> camera = info->getCamera(GEOMETRY_CAMERA);
930 camera->getProjectionMatrix().getFrustum(left,right,bottom,top,zNear,zFar);
931
932 shadowSwitch->setAllChildrenOn();
933 if (_numCascades == 1) {
934 osg::Camera* cascadeCam = static_cast<osg::Camera*>( shadowSwitch->getChild(0) );
935 cascadeCam->setViewport( 0, 0, _shadowMapSize, _shadowMapSize );
936 } else {
937 for (int no = 0; no < 4; ++no) {
938 osg::Camera* cascadeCam = static_cast<osg::Camera*>( shadowSwitch->getChild(no) );
939 cascadeCam->setViewport( int( no / 2 ) * (_shadowMapSize/2), (no & 1) * (_shadowMapSize/2), (_shadowMapSize/2), (_shadowMapSize/2) );
940 }
941 }
942 updateShadowCascade(info, camera, shadowSwitch, 0, left, right, bottom, top, zNear, 1.0, _cascadeFar[0]/zNear);
943 if (_numCascades > 1) {
944 shadowSwitch->setValue(1, true);
945 updateShadowCascade(info, camera, shadowSwitch, 1, left, right, bottom, top, zNear, _cascadeFar[0]/zNear, _cascadeFar[1]/zNear);
946 } else {
947 shadowSwitch->setValue(1, false);
948 }
949 if (_numCascades > 2) {
950 shadowSwitch->setValue(2, true);
951 updateShadowCascade(info, camera, shadowSwitch, 2, left, right, bottom, top, zNear, _cascadeFar[1]/zNear, _cascadeFar[2]/zNear);
952 } else {
953 shadowSwitch->setValue(2, false);
954 }
955 if (_numCascades > 3) {
956 shadowSwitch->setValue(3, true);
957 updateShadowCascade(info, camera, shadowSwitch, 3, left, right, bottom, top, zNear, _cascadeFar[2]/zNear, _cascadeFar[3]/zNear);
958 } else {
959 shadowSwitch->setValue(3, false);
960 }
961 {
962 osg::Matrixd &viewMatrix = mainShadowCamera->getViewMatrix();
963
964 osg::Vec4 aim = osg::Vec4( 0.0, 0.0, 0.0, 1.0 ) * camera->getInverseViewMatrix();
965
966 osg::Vec3 position( aim.x(), aim.y(), aim.z() );
967 viewMatrix.makeLookAt( position, position + (getSunDirection() * 10000.0), position );
968 }
969 }
970 }
971 }
972
updateShadowMapSize(int mapSize)973 void FGRenderer::updateShadowMapSize(int mapSize)
974 {
975 if ( ((~( mapSize-1 )) & mapSize) != mapSize ) {
976 SG_LOG( SG_VIEW, SG_ALERT, "Map size is not a power of two" );
977 return;
978 }
979 for ( CameraGroup::CameraIterator ii = CameraGroup::getDefault()->camerasBegin();
980 ii != CameraGroup::getDefault()->camerasEnd();
981 ++ii )
982 {
983 CameraInfo* info = ii->get();
984 Camera* camera = info->getCamera(SHADOW_CAMERA);
985 if (camera == 0) continue;
986
987 Texture2D* tex = info->getBuffer("shadow");
988 if (tex == 0) continue;
989
990 tex->setTextureSize( mapSize, mapSize );
991 tex->dirtyTextureObject();
992
993 Viewport* vp = camera->getViewport();
994 vp->width() = mapSize;
995 vp->height() = mapSize;
996
997 osgViewer::Renderer* renderer
998 = static_cast<osgViewer::Renderer*>(camera->getRenderer());
999 for (int i = 0; i < 2; ++i) {
1000 osgUtil::SceneView* sceneView = renderer->getSceneView(i);
1001 sceneView->getRenderStage()->setFrameBufferObject(0);
1002 sceneView->getRenderStage()->setCameraRequiresSetUp(true);
1003 if (sceneView->getRenderStageLeft()) {
1004 sceneView->getRenderStageLeft()->setFrameBufferObject(0);
1005 sceneView->getRenderStageLeft()->setCameraRequiresSetUp(true);
1006 }
1007 if (sceneView->getRenderStageRight()) {
1008 sceneView->getRenderStageRight()->setFrameBufferObject(0);
1009 sceneView->getRenderStageRight()->setCameraRequiresSetUp(true);
1010 }
1011 }
1012
1013 int cascadeSize = mapSize / 2;
1014 Group* grp = camera->getChild(0)->asGroup();
1015 for (int i = 0; i < 4; ++i ) {
1016 Camera* cascadeCam = static_cast<Camera*>( grp->getChild(i) );
1017 cascadeCam->setViewport( int( i / 2 ) * cascadeSize, (i & 1) * cascadeSize, cascadeSize, cascadeSize );
1018 }
1019
1020 _shadowMapSize = mapSize;
1021 }
1022 }
1023
enableShadows(bool enabled)1024 void FGRenderer::enableShadows(bool enabled)
1025 {
1026 for ( CameraGroup::CameraIterator ii = CameraGroup::getDefault()->camerasBegin();
1027 ii != CameraGroup::getDefault()->camerasEnd();
1028 ++ii )
1029 {
1030 CameraInfo* info = ii->get();
1031 Camera* camera = info->getCamera(SHADOW_CAMERA);
1032 if (camera == 0) continue;
1033
1034 osg::Switch* shadowSwitch = camera->getChild(0)->asSwitch();
1035 if (enabled)
1036 shadowSwitch->setAllChildrenOn();
1037 else
1038 shadowSwitch->setAllChildrenOff();
1039 }
1040 }
1041
updateCascadeFar(int index,float far_m)1042 void FGRenderer::updateCascadeFar(int index, float far_m)
1043 {
1044 if (index < 0 || index > 3)
1045 return;
1046 _cascadeFar[index] = far_m;
1047 _shadowDistances->set( osg::Vec4f(_cascadeFar[0], _cascadeFar[1], _cascadeFar[2], _cascadeFar[3]) );
1048 }
1049
updateCascadeNumber(size_t num)1050 void FGRenderer::updateCascadeNumber(size_t num)
1051 {
1052 if (num < 1 || num > 4)
1053 return;
1054 _numCascades = num;
1055 _shadowNumber->set( (int)_numCascades );
1056 }
1057
1058 class DebugPassListener : public SGPropertyChangeListener {
1059 public:
DebugPassListener(osg::Switch * sw,int i)1060 DebugPassListener(osg::Switch* sw, int i) : _switch(sw), _index(i) {}
valueChanged(SGPropertyNode * node)1061 virtual void valueChanged(SGPropertyNode* node) {
1062 _switch->setValue(_index, node->getBoolValue());
1063 }
1064
1065 private:
1066 osg::ref_ptr<osg::Switch> _switch;
1067 int _index;
1068 };
1069
1070 osg::Camera*
buildDeferredLightingCamera(flightgear::CameraInfo * info,osg::GraphicsContext * gc,const FGRenderingPipeline::Stage * stage)1071 FGRenderer::buildDeferredLightingCamera( flightgear::CameraInfo* info, osg::GraphicsContext* gc, const FGRenderingPipeline::Stage* stage )
1072 {
1073 osg::Camera* camera = new osg::Camera;
1074 info->addCamera(stage->name, camera );
1075
1076 camera->setCullCallback( new FGDeferredRenderingCameraCullCallback( stage->name, info ) );
1077 camera->setAllowEventFocus(false);
1078 camera->setGraphicsContext(gc);
1079 camera->setViewport(new Viewport);
1080 camera->setName(stage->name+"C");
1081 camera->setReferenceFrame(osg::Transform::ABSOLUTE_RF);
1082 camera->setRenderOrder(osg::Camera::NESTED_RENDER, stage->orderNum);
1083 camera->setRenderTargetImplementation( osg::Camera::FRAME_BUFFER_OBJECT );
1084 camera->setViewport( new osg::Viewport );
1085 buildAttachments(info, camera, stage->name, stage->attachments);
1086 camera->setDrawBuffer(GL_FRONT);
1087 camera->setReadBuffer(GL_FRONT);
1088 camera->setClearMask( GL_COLOR_BUFFER_BIT );
1089 osg::StateSet* ss = camera->getOrCreateStateSet();
1090 ss->setAttribute( new osg::Depth(osg::Depth::LESS, 0.0, 1.0, false) );
1091 ss->addUniform( _depthInColor );
1092
1093 osg::Switch* lightingGroup = new osg::Switch;
1094
1095 for (auto pass : stage->passes ) {
1096 ref_ptr<Node> node = buildPass(info, pass);
1097 if (node.valid()) {
1098 lightingGroup->addChild(node);
1099 if (!pass->debugProperty.empty()) {
1100 lightingGroup->setValue(lightingGroup->getNumChildren()-1, fgGetBool(pass->debugProperty));
1101 fgAddChangeListener(new DebugPassListener(lightingGroup, lightingGroup->getNumChildren()-1), pass->debugProperty);
1102 }
1103 }
1104 }
1105
1106 camera->addChild( lightingGroup );
1107
1108 return camera;
1109 }
1110
1111 CameraInfo*
buildDeferredPipeline(CameraGroup * cgroup,unsigned flags,osg::Camera * camera,const osg::Matrix & view,const osg::Matrix & projection,osg::GraphicsContext * gc)1112 FGRenderer::buildDeferredPipeline(CameraGroup* cgroup, unsigned flags, osg::Camera* camera,
1113 const osg::Matrix& view,
1114 const osg::Matrix& projection,
1115 osg::GraphicsContext* gc)
1116 {
1117 return buildCameraFromRenderingPipeline(_pipeline, cgroup, flags, camera, view, projection, gc);
1118 }
1119
1120 osg::Camera*
buildDeferredFullscreenCamera(flightgear::CameraInfo * info,const FGRenderingPipeline::Pass * pass)1121 FGRenderer::buildDeferredFullscreenCamera( flightgear::CameraInfo* info, const FGRenderingPipeline::Pass* pass )
1122 {
1123 osg::Camera* camera = new osg::Camera;
1124
1125 camera->setClearMask( 0 );
1126 camera->setAllowEventFocus(false);
1127 camera->setName(pass->name+"C");
1128 camera->setReferenceFrame(osg::Transform::ABSOLUTE_RF);
1129 camera->setRenderOrder(osg::Camera::NESTED_RENDER, pass->orderNum);
1130 camera->setComputeNearFarMode(osg::CullSettings::DO_NOT_COMPUTE_NEAR_FAR);
1131 camera->setViewMatrix(osg::Matrix::identity());
1132 camera->setProjectionMatrixAsOrtho2D(-1,1,-1,1);
1133
1134 osg::StateSet* ss = camera->getOrCreateStateSet();
1135 ss->setMode(GL_DEPTH_TEST, osg::StateAttribute::OFF);
1136 ss->addUniform( info->projInverse );
1137 ss->addUniform( info->viewInverse );
1138 ss->addUniform( info->view );
1139 ss->addUniform( info->bufferSize );
1140 ss->addUniform( info->worldPosCart );
1141 ss->addUniform( info->worldPosGeod );
1142 ss->addUniform( info->shadowMatrix[0] );
1143 ss->addUniform( info->shadowMatrix[1] );
1144 ss->addUniform( info->shadowMatrix[2] );
1145 ss->addUniform( info->shadowMatrix[3] );
1146 ss->addUniform( _ambientFactor );
1147 ss->addUniform( _sunDiffuse );
1148 ss->addUniform( _sunSpecular );
1149 ss->addUniform( _sunDirection );
1150 ss->addUniform( _planes );
1151 ss->addUniform( _shadowNumber );
1152 ss->addUniform( _shadowDistances );
1153 ss->addUniform( _fogColor );
1154 ss->addUniform( _fogDensity );
1155
1156 osg::Geometry* g = osg::createTexturedQuadGeometry( osg::Vec3(-1.,-1.,0.), osg::Vec3(2.,0.,0.), osg::Vec3(0.,2.,0.) );
1157 g->setUseDisplayList(false);
1158 simgear::EffectGeode* eg = new simgear::EffectGeode;
1159 osg::ref_ptr<SGReaderWriterOptions> opt;
1160 opt = SGReaderWriterOptions::fromPath(globals->get_fg_root());
1161 opt->setPropertyNode(globals->get_props());
1162 simgear::Effect* effect = simgear::makeEffect(pass->effect, true, opt.get());
1163 if (effect) {
1164 eg->setEffect( effect );
1165 }
1166
1167 eg->setName(pass->name+"Quad");
1168 eg->setCullingActive(false);
1169 eg->addDrawable(g);
1170 camera->addChild(eg);
1171
1172 return camera;
1173 }
1174
1175 osg::Camera*
buildDeferredFullscreenCamera(flightgear::CameraInfo * info,osg::GraphicsContext * gc,const FGRenderingPipeline::Stage * stage)1176 FGRenderer::buildDeferredFullscreenCamera( flightgear::CameraInfo* info, osg::GraphicsContext* gc, const FGRenderingPipeline::Stage* stage )
1177 {
1178 osg::Camera* camera = buildDeferredFullscreenCamera(info, static_cast<const FGRenderingPipeline::Pass*>(stage));
1179 info->addCamera(stage->name, camera, stage->scaleFactor, true);
1180
1181 camera->setCullCallback( new FGDeferredRenderingCameraCullCallback(stage->name, info, stage->needsDuDv) );
1182 camera->setGraphicsContext(gc);
1183 camera->setViewport(new Viewport);
1184 camera->setRenderTargetImplementation( osg::Camera::FRAME_BUFFER_OBJECT );
1185 buildAttachments(info, camera, stage->name, stage->attachments);
1186 camera->setDrawBuffer(GL_FRONT);
1187 camera->setReadBuffer(GL_FRONT);
1188 camera->setClearColor( osg::Vec4( 1., 1., 1., 1. ) );
1189 camera->setClearMask( GL_COLOR_BUFFER_BIT );
1190 camera->setViewMatrix(osg::Matrix::identity());
1191 camera->setProjectionMatrixAsOrtho2D(-1,1,-1,1);
1192
1193 osg::StateSet* ss = camera->getOrCreateStateSet();
1194 if (stage->needsDuDv) {
1195 ss->addUniform( info->du );
1196 ss->addUniform( info->dv );
1197 }
1198
1199 return camera;
1200 }
1201
1202 void
buildDeferredDisplayCamera(osg::Camera * camera,flightgear::CameraInfo * info,const FGRenderingPipeline::Stage * stage,osg::GraphicsContext * gc)1203 FGRenderer::buildDeferredDisplayCamera( osg::Camera* camera, flightgear::CameraInfo* info, const FGRenderingPipeline::Stage* stage, osg::GraphicsContext* gc )
1204 {
1205 camera->setName( "DisplayC" );
1206 camera->setCullCallback( new FGDeferredRenderingCameraCullCallback( stage->name, info ) );
1207 camera->setReferenceFrame(Transform::ABSOLUTE_RF);
1208 camera->setAllowEventFocus(false);
1209 osg::Geometry* g = osg::createTexturedQuadGeometry( osg::Vec3(-1.,-1.,0.), osg::Vec3(2.,0.,0.), osg::Vec3(0.,2.,0.) );
1210 g->setUseDisplayList(false); //DEBUG
1211 simgear::EffectGeode* eg = new simgear::EffectGeode;
1212 osg::ref_ptr<SGReaderWriterOptions> opt;
1213 opt = SGReaderWriterOptions::fromPath(globals->get_fg_root());
1214 opt->setPropertyNode(globals->get_props());
1215 simgear::Effect* effect = simgear::makeEffect(stage->effect, true, opt.get());
1216 if (!effect) {
1217 SG_LOG(SG_VIEW, SG_ALERT, stage->effect + " not found");
1218 return;
1219 }
1220 eg->setEffect(effect);
1221 eg->setCullingActive(false);
1222 eg->addDrawable(g);
1223 camera->setViewMatrix(osg::Matrix::identity());
1224 camera->setProjectionMatrixAsOrtho2D(-1,1,-1,1);
1225 camera->addChild(eg);
1226
1227 osg::StateSet* ss = camera->getOrCreateStateSet();
1228 ss->addUniform( _depthInColor );
1229 ss->addUniform( info->projInverse );
1230 ss->addUniform( info->viewInverse );
1231 ss->addUniform( info->view );
1232 ss->addUniform( info->bufferSize );
1233 ss->addUniform( info->worldPosCart );
1234 ss->addUniform( info->worldPosGeod );
1235 ss->addUniform( info->shadowMatrix[0] );
1236 ss->addUniform( info->shadowMatrix[1] );
1237 ss->addUniform( info->shadowMatrix[2] );
1238 ss->addUniform( info->shadowMatrix[3] );
1239 ss->addUniform( _ambientFactor );
1240 ss->addUniform( _sunDiffuse );
1241 ss->addUniform( _sunSpecular );
1242 ss->addUniform( _sunDirection );
1243 ss->addUniform( _planes );
1244 ss->addUniform( _shadowNumber );
1245 ss->addUniform( _shadowDistances );
1246 ss->addUniform( _fogColor );
1247 ss->addUniform( _fogDensity );
1248 }
1249
1250 void
buildStage(CameraInfo * info,FGRenderingPipeline::Stage * stage,CameraGroup * cgroup,osg::Camera * mainCamera,const osg::Matrix & view,const osg::Matrix & projection,osg::GraphicsContext * gc)1251 FGRenderer::buildStage(CameraInfo* info,
1252 FGRenderingPipeline::Stage* stage,
1253 CameraGroup* cgroup,
1254 osg::Camera* mainCamera,
1255 const osg::Matrix& view, const osg::Matrix& projection, osg::GraphicsContext* gc)
1256 {
1257 if (!stage->valid())
1258 return;
1259
1260 ref_ptr<Camera> camera;
1261 bool needOffsets = false;
1262 if (stage->type == "geometry") {
1263 camera = buildDeferredGeometryCamera(info, gc, stage->name, stage->attachments);
1264 needOffsets = true;
1265 } else if (stage->type == "lighting") {
1266 camera = buildDeferredLightingCamera(info, gc, stage);
1267 needOffsets = true;
1268 } else if (stage->type == "shadow")
1269 camera = buildDeferredShadowCamera(info, gc, stage->name, stage->attachments);
1270 else if (stage->type == "fullscreen")
1271 camera = buildDeferredFullscreenCamera(info, gc, stage);
1272 else if (stage->type == "display") {
1273 camera = mainCamera;
1274 buildDeferredDisplayCamera(camera, info, stage, gc);
1275 } else
1276 throw sg_exception("Stage type is not supported");
1277
1278 if (needOffsets)
1279 cgroup->getViewer()->addSlave(camera, projection, view, false);
1280 else
1281 cgroup->getViewer()->addSlave(camera, false);
1282 installCullVisitor(camera);
1283 int slaveIndex = cgroup->getViewer()->getNumSlaves() - 1;
1284 if (stage->type == "display")
1285 info->addCamera( stage->type, camera, slaveIndex, true );
1286 info->getRenderStageInfo(stage->name).slaveIndex = slaveIndex;
1287 }
1288
1289 osg::Node*
buildLightingSkyCloudsPass(FGRenderingPipeline::Pass * pass)1290 FGRenderer::buildLightingSkyCloudsPass(FGRenderingPipeline::Pass* pass)
1291 {
1292 Group* group = new Group;
1293 group->setName("skyCloudsGroup");
1294 group->setNodeMask(simgear::BACKGROUND_BIT);
1295
1296 StateSet* ss = group->getOrCreateStateSet();
1297 ss->setAttributeAndModes( new osg::ColorMask( true, true, true, false ), osg::StateAttribute::ON );
1298 group->addChild( _sky->getPreRoot() );
1299 group->addChild( _sky->getCloudRoot() );
1300 return group;
1301 }
1302
1303 osg::Node*
buildLightingLightsPass(CameraInfo * info,FGRenderingPipeline::Pass * pass)1304 FGRenderer::buildLightingLightsPass(CameraInfo* info, FGRenderingPipeline::Pass* pass)
1305 {
1306 osg::Camera* lightCam = new osg::Camera;
1307 StateSet* ss = lightCam->getOrCreateStateSet();
1308 ss->addUniform( _planes );
1309 ss->addUniform( info->bufferSize );
1310 ss->addUniform( _fogColor );
1311 ss->addUniform( _fogDensity );
1312 lightCam->setName( "LightCamera" );
1313 lightCam->setClearMask(0);
1314 lightCam->setAllowEventFocus(false);
1315 lightCam->setReferenceFrame(osg::Transform::RELATIVE_RF);
1316 lightCam->setRenderOrder(osg::Camera::NESTED_RENDER,pass->orderNum);
1317 lightCam->setViewMatrix(osg::Matrix::identity());
1318 lightCam->setProjectionMatrix(osg::Matrix::identity());
1319 lightCam->setComputeNearFarMode(osg::CullSettings::DO_NOT_COMPUTE_NEAR_FAR);
1320 lightCam->setCullMask( simgear::MODELLIGHT_BIT | simgear::PANEL2D_BIT | simgear::PERMANENTLIGHT_BIT);
1321 lightCam->setInheritanceMask( osg::CullSettings::ALL_VARIABLES & ~osg::CullSettings::CULL_MASK );
1322 lightCam->addChild( _deferredRealRoot.get() );
1323
1324 return lightCam;
1325 }
1326
1327 osg::Node*
buildPass(CameraInfo * info,FGRenderingPipeline::Pass * pass)1328 FGRenderer::buildPass(CameraInfo* info, FGRenderingPipeline::Pass* pass)
1329 {
1330 if (!pass->valid())
1331 return 0;
1332
1333 ref_ptr<Node> node;
1334 if (pass->type == "sky-clouds")
1335 node = buildLightingSkyCloudsPass(pass);
1336 else if (pass->type == "fullscreen")
1337 node = buildDeferredFullscreenCamera(info, pass);
1338 else if (pass->type == "lights")
1339 node = buildLightingLightsPass(info, pass);
1340 else
1341 throw sg_exception("Pass type is not supported");
1342
1343 return node.release();
1344 }
1345
1346 void
buildBuffers(FGRenderingPipeline * rpipe,CameraInfo * info)1347 FGRenderer::buildBuffers(FGRenderingPipeline* rpipe, CameraInfo* info)
1348 {
1349 for (size_t i = 0; i < rpipe->buffers.size(); ++i) {
1350 osg::ref_ptr<FGRenderingPipeline::Buffer> buffer = rpipe->buffers[i];
1351 if (buffer->valid()) {
1352 bool fullscreen = buffer->width == -1 && buffer->height == -1;
1353 info->addBuffer(buffer->name, buildDeferredBuffer( buffer->internalFormat,
1354 buffer->sourceFormat,
1355 buffer->sourceType,
1356 buffer->wrapMode,
1357 buffer->shadowComparison),
1358 fullscreen ? buffer->scaleFactor : 0.0f);
1359 if (!fullscreen) {
1360 info->getBuffer(buffer->name)->setTextureSize(buffer->width, buffer->height);
1361 }
1362 }
1363 }
1364 }
1365
buildCameraFromRenderingPipeline(FGRenderingPipeline * rpipe,CameraGroup * cgroup,unsigned flags,osg::Camera * camera,const osg::Matrix & view,const osg::Matrix & projection,osg::GraphicsContext * gc)1366 CameraInfo* FGRenderer::buildCameraFromRenderingPipeline(FGRenderingPipeline* rpipe, CameraGroup* cgroup, unsigned flags, osg::Camera* camera,
1367 const osg::Matrix& view, const osg::Matrix& projection, osg::GraphicsContext* gc)
1368 {
1369 CameraInfo* info = new CameraInfo(flags);
1370 buildBuffers(rpipe, info);
1371
1372 for (size_t i = 0; i < rpipe->stages.size(); ++i) {
1373 osg::ref_ptr<FGRenderingPipeline::Stage> stage = rpipe->stages[i];
1374 buildStage(info, stage, cgroup, camera, view, projection, gc);
1375 }
1376
1377 cgroup->addCamera(info);
1378
1379 return info;
1380 }
1381
setupRoot()1382 void FGRenderer::setupRoot()
1383 {
1384 osg::StateSet* stateSet = _root->getOrCreateStateSet();
1385
1386 stateSet->setMode(GL_LIGHTING, osg::StateAttribute::OFF);
1387
1388 stateSet->setAttribute(new osg::Depth(osg::Depth::LESS));
1389 stateSet->setMode(GL_DEPTH_TEST, osg::StateAttribute::OFF);
1390
1391 stateSet->setAttribute(new osg::BlendFunc);
1392 stateSet->setMode(GL_BLEND, osg::StateAttribute::OFF);
1393
1394 stateSet->setMode(GL_FOG, osg::StateAttribute::OFF);
1395
1396 // this will be set below
1397 stateSet->setMode(GL_NORMALIZE, osg::StateAttribute::OFF);
1398
1399 osg::Material* material = new osg::Material;
1400 stateSet->setAttribute(material);
1401
1402 stateSet->setTextureAttribute(0, new osg::TexEnv);
1403 stateSet->setTextureMode(0, GL_TEXTURE_2D, osg::StateAttribute::OFF);
1404
1405 osg::Hint* hint = new osg::Hint(GL_FOG_HINT, GL_DONT_CARE);
1406 hint->setUpdateCallback(new FGHintUpdateCallback("/sim/rendering/fog"));
1407 stateSet->setAttribute(hint);
1408 hint = new osg::Hint(GL_POLYGON_SMOOTH_HINT, GL_DONT_CARE);
1409 hint->setUpdateCallback(new FGHintUpdateCallback("/sim/rendering/polygon-smooth"));
1410 stateSet->setAttribute(hint);
1411 hint = new osg::Hint(GL_LINE_SMOOTH_HINT, GL_DONT_CARE);
1412 hint->setUpdateCallback(new FGHintUpdateCallback("/sim/rendering/line-smooth"));
1413 stateSet->setAttribute(hint);
1414 hint = new osg::Hint(GL_POINT_SMOOTH_HINT, GL_DONT_CARE);
1415 hint->setUpdateCallback(new FGHintUpdateCallback("/sim/rendering/point-smooth"));
1416 stateSet->setAttribute(hint);
1417 hint = new osg::Hint(GL_PERSPECTIVE_CORRECTION_HINT, GL_DONT_CARE);
1418 hint->setUpdateCallback(new FGHintUpdateCallback("/sim/rendering/perspective-correction"));
1419 stateSet->setAttribute(hint);
1420 }
1421
1422 void
setupView(void)1423 FGRenderer::setupView( void )
1424 {
1425 osgViewer::Viewer* viewer = globals->get_renderer()->getViewer();
1426 osg::initNotifyLevel();
1427
1428 // The number of polygon-offset "units" to place between layers. In
1429 // principle, one is supposed to be enough. In practice, I find that
1430 // my hardware/driver requires many more.
1431 osg::PolygonOffset::setUnitsMultiplier(1);
1432 osg::PolygonOffset::setFactorMultiplier(1);
1433
1434 setupRoot();
1435
1436 // build the sky
1437 Ephemeris* ephemerisSub = globals->get_subsystem<Ephemeris>();
1438
1439
1440 // The sun and moon diameters are scaled down numbers of the
1441 // actual diameters. This was needed to fit both the sun and the
1442 // moon within the distance to the far clip plane.
1443 // Moon diameter: 3,476 kilometers
1444 // Sun diameter: 1,390,000 kilometers
1445 osg::ref_ptr<SGReaderWriterOptions> opt;
1446 opt = SGReaderWriterOptions::fromPath(globals->get_fg_root());
1447 opt->setPropertyNode(globals->get_props());
1448 _sky->build( 80000.0, 80000.0,
1449 232.5, 180.8,
1450 *ephemerisSub->data(),
1451 fgGetNode("/environment", true),
1452 opt.get());
1453
1454 viewer->getCamera()
1455 ->setComputeNearFarMode(osg::CullSettings::DO_NOT_COMPUTE_NEAR_FAR);
1456
1457
1458 // need to update the light on every frame
1459 // OSG LightSource objects are rather confusing. OSG only supports
1460 // the 10 lights specified by OpenGL itself; if more than one
1461 // LightSource in the scene graph have the same light number, it's
1462 // indeterminate which values will be used to render geometry that
1463 // has that light number enabled. Also, adding children to a
1464 // LightSource is just a shortcut for setting up a state set that
1465 // has the corresponding OpenGL light enabled: a LightSource will
1466 // affect geometry anywhere in the scene graph that has its light
1467 // number enabled in a state set.
1468 osg::ref_ptr<LightSource> lightSource = new LightSource;
1469 lightSource->setName("FGLightSource");
1470 lightSource->getLight()->setDataVariance(Object::DYNAMIC);
1471 // relative because of CameraView being just a clever transform node
1472 lightSource->setReferenceFrame(osg::LightSource::RELATIVE_RF);
1473 lightSource->setLocalStateSetModes(osg::StateAttribute::ON);
1474 lightSource->setUpdateCallback(new FGLightSourceUpdateCallback);
1475 _viewerSceneRoot->addChild(lightSource);
1476
1477 // we need a white diffuse light for the phase of the moon
1478 osg::ref_ptr<LightSource> sunLight = new osg::LightSource;
1479 sunLight->setName("sunLightSource");
1480 sunLight->getLight()->setDataVariance(Object::DYNAMIC);
1481 sunLight->getLight()->setLightNum(1);
1482 sunLight->setUpdateCallback(new FGLightSourceUpdateCallback(true));
1483 sunLight->setReferenceFrame(osg::LightSource::RELATIVE_RF);
1484 sunLight->setLocalStateSetModes(osg::StateAttribute::ON);
1485
1486 // Hang a StateSet above the sky subgraph in order to turn off
1487 // light 0
1488 Group* skyGroup = _sky->getPreRoot();
1489 StateSet* skySS = skyGroup->getOrCreateStateSet();
1490 skySS->setMode(GL_LIGHT0, StateAttribute::OFF);
1491 sunLight->addChild(skyGroup);
1492
1493 if ( _classicalRenderer ) {
1494 _root->addChild(sunLight);
1495 }
1496
1497 osg::Group* sceneGroup = globals->get_scenery()->get_scene_graph();
1498 sceneGroup->setName("rendererScene");
1499 sceneGroup->setNodeMask(~simgear::BACKGROUND_BIT);
1500 _root->addChild(sceneGroup);
1501
1502 // setup state-set for main scenery (including models and aircraft)
1503 osg::StateSet* stateSet = sceneGroup->getOrCreateStateSet();
1504 stateSet->setMode(GL_LIGHTING, osg::StateAttribute::ON);
1505 stateSet->setMode(GL_DEPTH_TEST, osg::StateAttribute::ON);
1506
1507 // enable disable specular highlights.
1508 // is the place where we might plug in an other fragment shader ...
1509 osg::LightModel* lightModel = new osg::LightModel;
1510 lightModel->setUpdateCallback(new FGLightModelUpdateCallback);
1511 stateSet->setAttribute(lightModel);
1512
1513 // switch to enable wireframe
1514 osg::PolygonMode* polygonMode = new osg::PolygonMode;
1515 polygonMode->setUpdateCallback(new FGWireFrameModeUpdateCallback);
1516 stateSet->setAttributeAndModes(polygonMode);
1517
1518 // scene fog handling
1519 osg::Fog* fog = new osg::Fog;
1520 fog->setUpdateCallback(new FGFogUpdateCallback);
1521 stateSet->setAttributeAndModes(fog);
1522 stateSet->setUpdateCallback(new FGFogEnableUpdateCallback);
1523
1524 // plug in the GUI
1525 osg::Camera* guiCamera = getGUICamera(CameraGroup::getDefault());
1526 if (guiCamera) {
1527 osg::Geode* hudGeode = new osg::Geode;
1528 hudGeode->addDrawable(new SGHUDDrawable);
1529 guiCamera->addChild(hudGeode);
1530
1531 #if defined(HAVE_PUI)
1532 _puiCamera = new flightgear::PUICamera;
1533 _puiCamera->init(guiCamera, viewer);
1534 #endif
1535
1536 #if defined(ENABLE_QQ_UI)
1537 std::string rootQMLPath = fgGetString("/sim/gui/qml-root-path");
1538 auto graphicsWindow = dynamic_cast<osgViewer::GraphicsWindow*>(guiCamera->getGraphicsContext());
1539
1540 if (!rootQMLPath.empty()) {
1541 _quickDrawable = new QQuickDrawable;
1542 _quickDrawable->setup(graphicsWindow, viewer);
1543
1544 _quickDrawable->setSource(QUrl::fromLocalFile(QString::fromStdString(rootQMLPath)));
1545
1546 osg::Geode* qqGeode = new osg::Geode;
1547 qqGeode->addDrawable(_quickDrawable);
1548 guiCamera->addChild(qqGeode);
1549 }
1550 #endif
1551 guiCamera->insertChild(0, FGPanelNode::create2DPanelNode());
1552 }
1553
1554 osg::Switch* sw = new osg::Switch;
1555 sw->setName("scenerySwitch");
1556 sw->setUpdateCallback(new FGScenerySwitchCallback);
1557 sw->addChild(_root.get());
1558 _viewerSceneRoot->addChild(sw);
1559 // The clouds are attached directly to the scene graph root
1560 // because, in theory, they don't want the same default state set
1561 // as the rest of the scene. This may not be true in practice.
1562 if ( _classicalRenderer ) {
1563 _viewerSceneRoot->addChild(_sky->getCloudRoot());
1564 _viewerSceneRoot->addChild(FGCreateRedoutNode());
1565 }
1566
1567 // Attach empty program to the scene root so that shader programs
1568 // don't leak into state sets (effects) that shouldn't have one.
1569 stateSet = _viewerSceneRoot->getOrCreateStateSet();
1570 stateSet->setAttributeAndModes(new osg::Program, osg::StateAttribute::ON);
1571
1572 if ( !_classicalRenderer ) {
1573 _deferredRealRoot->addChild( _viewerSceneRoot.get() );
1574 }
1575 }
1576
1577 // Update all Visuals (redraws anything graphics related)
1578 void
update()1579 FGRenderer::update( ) {
1580 if (!_position_finalized || !_scenery_loaded->getBoolValue())
1581 {
1582 _splash_alpha->setDoubleValue(1.0);
1583
1584 if (!MaximumTextureSize) {
1585 osg::Camera* guiCamera = getGUICamera(CameraGroup::getDefault());
1586 if (guiCamera) {
1587 GraphicsContext *gc = guiCamera->getGraphicsContext();
1588 osg::GLExtensions* gl2ext = gc->getState()->get<osg::GLExtensions>();
1589 if (gl2ext) {
1590 MaximumTextureSize = gl2ext->maxTextureSize;
1591 SGSceneFeatures::instance()->setMaxTextureSize(MaximumTextureSize);
1592 SG_LOG(SG_VIEW, SG_INFO, "FGRenderer:: Maximum texture size " << MaximumTextureSize);
1593 }
1594 }
1595 }
1596 return;
1597 }
1598 osgViewer::Viewer* viewer = globals->get_renderer()->getViewer();
1599
1600 if (_splash_alpha->getDoubleValue()>0.0)
1601 {
1602 // Fade out the splash screen
1603 const double fade_time = 0.5;
1604 const double fade_steps_per_sec = 10;
1605 double delay_time = SGMiscd::min(fade_time/fade_steps_per_sec,
1606 (SGTimeStamp::now() - _splash_time).toSecs());
1607 _splash_time = SGTimeStamp::now();
1608 double sAlpha = _splash_alpha->getDoubleValue();
1609 sAlpha -= SGMiscd::max(0.0,delay_time/fade_time);
1610 FGScenerySwitchCallback::scenery_enabled = (sAlpha<1.0);
1611
1612 if (sAlpha <= 0.0) {
1613 flightgear::addSentryBreadcrumb("splash-screen fade out complete", "info");
1614 }
1615
1616 _splash_alpha->setDoubleValue((sAlpha < 0) ? 0.0 : sAlpha);
1617
1618 syncPausePopupState();
1619 fgSetBool("/sim/menubar/overlap-hide", false);
1620 }
1621
1622 FGLight *l = static_cast<FGLight*>(globals->get_subsystem("lighting"));
1623 if (!_classicalRenderer ) {
1624 _ambientFactor->set( toOsg(l->scene_ambient()) );
1625 _sunDiffuse->set( toOsg(l->scene_diffuse()) );
1626 _sunSpecular->set( toOsg(l->scene_specular()) );
1627 _sunDirection->set( osg::Vec3f(l->sun_vec()[0], l->sun_vec()[1], l->sun_vec()[2]) );
1628 }
1629
1630 // update fog params
1631 double actual_visibility;
1632 if (_cloud_status->getBoolValue()) {
1633 actual_visibility = _sky->get_visibility();
1634 } else {
1635 actual_visibility = _visibility_m->getDoubleValue();
1636 }
1637
1638 // idle_state is now 1000 meaning we've finished all our
1639 // initializations and are running the main loop, so this will
1640 // now work without seg faulting the system.
1641
1642 flightgear::View *current__view = globals->get_current_view();
1643 // Force update of center dependent values ...
1644 current__view->set_dirty();
1645
1646 osg::Camera *camera = viewer->getCamera();
1647
1648 osg::Vec4 clear_color = _altitude_ft->getDoubleValue() < 250000
1649 ? toOsg(l->adj_fog_color())
1650 // skydome ends at ~262000ft (default rendering)
1651 // ~328000 ft (ALS) and would produce a strange
1652 // looking greyish space -> black looks much
1653 // better :-)
1654 : osg::Vec4(0, 0, 0, 1);
1655 camera->setClearColor(clear_color);
1656
1657 updateSky();
1658
1659 // need to call the update visitor once
1660 _frameStamp->setCalendarTime(*globals->get_time_params()->getGmt());
1661 _updateVisitor->setViewData(current__view->getViewPosition(),
1662 current__view->getViewOrientation());
1663 SGVec3f direction(l->sun_vec()[0], l->sun_vec()[1], l->sun_vec()[2]);
1664 _updateVisitor->setLight(direction, l->scene_ambient(),
1665 l->scene_diffuse(), l->scene_specular(),
1666 l->adj_fog_color(),
1667 l->get_sun_angle()*SGD_RADIANS_TO_DEGREES);
1668 _updateVisitor->setVisibility(actual_visibility);
1669 simgear::GroundLightManager::instance()->update(_updateVisitor.get());
1670 osg::Node::NodeMask cullMask = ~simgear::LIGHTS_BITS & ~simgear::PICK_BIT;
1671 cullMask |= simgear::GroundLightManager::instance()
1672 ->getLightNodeMask(_updateVisitor.get());
1673 if (_panel_hotspots->getBoolValue())
1674 cullMask |= simgear::PICK_BIT;
1675 CameraGroup::getDefault()->setCameraCullMasks(cullMask);
1676 if ( !_classicalRenderer ) {
1677 _fogColor->set( toOsg( l->adj_fog_color() ) );
1678 _fogDensity->set( float( _updateVisitor->getFogExp2Density() ) );
1679 }
1680 }
1681
1682 void
updateSky()1683 FGRenderer::updateSky()
1684 {
1685 // update fog params if visibility has changed
1686 double visibility_meters = _visibility_m->getDoubleValue();
1687 _sky->set_visibility(visibility_meters);
1688
1689 double altitude_m = _altitude_ft->getDoubleValue() * SG_FEET_TO_METER;
1690 _sky->modify_vis( altitude_m, 0.0 /* time factor, now unused */);
1691
1692 FGLight *l = static_cast<FGLight*>(globals->get_subsystem("lighting"));
1693
1694 // The sun and moon distances are scaled down versions
1695 // of the actual distance to get both the moon and the sun
1696 // within the range of the far clip plane.
1697 // Moon distance: 384,467 kilometers
1698 // Sun distance: 150,000,000 kilometers
1699
1700 double sun_horiz_eff, moon_horiz_eff;
1701 if (_horizon_effect->getBoolValue()) {
1702 sun_horiz_eff
1703 = 0.67 + pow(osg::clampAbove(0.5 + cos(l->get_sun_angle()),
1704 0.0),
1705 0.33) / 3.0;
1706 moon_horiz_eff
1707 = 0.67 + pow(osg::clampAbove(0.5 + cos(l->get_moon_angle()),
1708 0.0),
1709 0.33)/3.0;
1710 } else {
1711 sun_horiz_eff = moon_horiz_eff = 1.0;
1712 }
1713
1714
1715
1716 SGSkyState sstate;
1717 sstate.pos = globals->get_current_view()->getViewPosition();
1718 sstate.pos_geod = globals->get_current_view()->getPosition();
1719 sstate.ori = globals->get_current_view()->getViewOrientation();
1720 sstate.spin = l->get_sun_rotation();
1721 sstate.gst = globals->get_time_params()->getGst();
1722 sstate.sun_dist = 50000.0 * sun_horiz_eff;
1723 sstate.moon_dist = 40000.0 * moon_horiz_eff;
1724 sstate.sun_angle = l->get_sun_angle();
1725
1726 SGSkyColor scolor;
1727 scolor.sky_color = SGVec3f(l->sky_color().data());
1728 scolor.adj_sky_color = SGVec3f(l->adj_sky_color().data());
1729 scolor.fog_color = SGVec3f(l->adj_fog_color().data());
1730 scolor.cloud_color = SGVec3f(l->cloud_color().data());
1731 scolor.sun_angle = l->get_sun_angle();
1732 scolor.moon_angle = l->get_moon_angle();
1733
1734 Ephemeris* ephemerisSub = globals->get_subsystem<Ephemeris>();
1735 double delta_time_sec = _sim_delta_sec->getDoubleValue();
1736 _sky->reposition( sstate, *ephemerisSub->data(), delta_time_sec );
1737 _sky->repaint( scolor, *ephemerisSub->data() );
1738 }
1739
1740 void
resize(int width,int height)1741 FGRenderer::resize( int width, int height )
1742 {
1743 int curWidth = _xsize->getIntValue(),
1744 curHeight = _ysize->getIntValue();
1745 SG_LOG(SG_VIEW, SG_DEBUG, "FGRenderer::resize: new size " << width << " x " << height);
1746 if ((curHeight != height) || (curWidth != width)) {
1747 // must guard setting these, or PLIB-PUI fails with too many live interfaces
1748 _xsize->setIntValue(width);
1749 _ysize->setIntValue(height);
1750 }
1751
1752 // update splash node if present
1753 _splash->resize(width, height);
1754 #if defined(ENABLE_QQ_UI)
1755 if (_quickDrawable) {
1756 _quickDrawable->resize(width, height);
1757 }
1758 #endif
1759 }
1760
1761 typedef osgUtil::LineSegmentIntersector::Intersection Intersection;
uvFromIntersection(const Intersection & hit)1762 SGVec2d uvFromIntersection(const Intersection& hit)
1763 {
1764 // Taken from http://trac.openscenegraph.org/projects/osg/browser/OpenSceneGraph/trunk/examples/osgmovie/osgmovie.cpp
1765
1766 osg::Drawable* drawable = hit.drawable.get();
1767 osg::Geometry* geometry = drawable ? drawable->asGeometry() : 0;
1768 osg::Vec3Array* vertices =
1769 geometry ? dynamic_cast<osg::Vec3Array*>(geometry->getVertexArray()) : 0;
1770
1771 if( !vertices )
1772 {
1773 SG_LOG(SG_INPUT, SG_WARN, "Unable to get vertices for intersection.");
1774 return SGVec2d(-9999,-9999);
1775 }
1776
1777 // get the vertex indices.
1778 const Intersection::IndexList& indices = hit.indexList;
1779 const Intersection::RatioList& ratios = hit.ratioList;
1780
1781 if( indices.size() != 3 || ratios.size() != 3 )
1782 {
1783 SG_LOG( SG_INPUT,
1784 SG_WARN,
1785 "Intersection has insufficient indices to work with." );
1786 return SGVec2d(-9999,-9999);
1787 }
1788
1789 unsigned int i1 = indices[0];
1790 unsigned int i2 = indices[1];
1791 unsigned int i3 = indices[2];
1792
1793 float r1 = ratios[0];
1794 float r2 = ratios[1];
1795 float r3 = ratios[2];
1796
1797 osg::Array* texcoords =
1798 (geometry->getNumTexCoordArrays() > 0) ? geometry->getTexCoordArray(0) : 0;
1799 osg::Vec2Array* texcoords_Vec2Array =
1800 dynamic_cast<osg::Vec2Array*>(texcoords);
1801
1802 if( !texcoords_Vec2Array )
1803 {
1804 SG_LOG(SG_INPUT, SG_WARN, "Unable to get texcoords for intersection.");
1805 return SGVec2d(-9999,-9999);
1806 }
1807
1808 // we have tex coord array so now we can compute the final tex coord at the
1809 // point of intersection.
1810 osg::Vec2 tc1 = (*texcoords_Vec2Array)[i1];
1811 osg::Vec2 tc2 = (*texcoords_Vec2Array)[i2];
1812 osg::Vec2 tc3 = (*texcoords_Vec2Array)[i3];
1813
1814 return toSG( osg::Vec2d(tc1 * r1 + tc2 * r2 + tc3 * r3) );
1815 }
1816
pick(const osg::Vec2 & windowPos)1817 PickList FGRenderer::pick(const osg::Vec2& windowPos)
1818 {
1819 PickList result;
1820
1821 typedef osgUtil::LineSegmentIntersector::Intersections Intersections;
1822 Intersections intersections;
1823
1824 if (!computeIntersections(CameraGroup::getDefault(), windowPos, intersections))
1825 return result;
1826 for (Intersections::iterator hit = intersections.begin(),
1827 e = intersections.end();
1828 hit != e;
1829 ++hit) {
1830 const osg::NodePath& np = hit->nodePath;
1831 osg::NodePath::const_reverse_iterator npi;
1832
1833 for (npi = np.rbegin(); npi != np.rend(); ++npi) {
1834 SGSceneUserData* ud = SGSceneUserData::getSceneUserData(*npi);
1835 if (!ud || (ud->getNumPickCallbacks() == 0))
1836 continue;
1837
1838 for (unsigned i = 0; i < ud->getNumPickCallbacks(); ++i) {
1839 SGPickCallback* pickCallback = ud->getPickCallback(i);
1840 if (!pickCallback)
1841 continue;
1842 SGSceneryPick sceneryPick;
1843 sceneryPick.info.local = toSG(hit->getLocalIntersectPoint());
1844 sceneryPick.info.wgs84 = toSG(hit->getWorldIntersectPoint());
1845
1846 if( pickCallback->needsUV() )
1847 sceneryPick.info.uv = uvFromIntersection(*hit);
1848
1849 sceneryPick.callback = pickCallback;
1850 result.push_back(sceneryPick);
1851 } // of installed pick callbacks iteration
1852 } // of reverse node path walk
1853 }
1854
1855 return result;
1856 }
1857
1858 void
setViewer(osgViewer::Viewer * viewer_)1859 FGRenderer::setViewer(osgViewer::Viewer* viewer_)
1860 {
1861 viewer = viewer_;
1862 }
1863
1864 void
setEventHandler(FGEventHandler * eventHandler_)1865 FGRenderer::setEventHandler(FGEventHandler* eventHandler_)
1866 {
1867 eventHandler = eventHandler_;
1868 }
1869
1870 void
addCamera(osg::Camera * camera,bool useSceneData)1871 FGRenderer::addCamera(osg::Camera* camera, bool useSceneData)
1872 {
1873 _viewerSceneRoot->addChild(camera);
1874 }
1875
1876 void
removeCamera(osg::Camera * camera)1877 FGRenderer::removeCamera(osg::Camera* camera)
1878 {
1879 _viewerSceneRoot->removeChild(camera);
1880 }
1881
1882 void
setPlanes(double zNear,double zFar)1883 FGRenderer::setPlanes( double zNear, double zFar )
1884 {
1885 _planes->set( osg::Vec3f( - zFar, - zFar * zNear, zFar - zNear ) );
1886 }
1887
1888 bool
fgDumpSceneGraphToFile(const char * filename)1889 fgDumpSceneGraphToFile(const char* filename)
1890 {
1891 osgViewer::Viewer* viewer = globals->get_renderer()->getViewer();
1892 return osgDB::writeNodeFile(*viewer->getSceneData(), filename);
1893 }
1894
1895 bool
fgDumpTerrainBranchToFile(const char * filename)1896 fgDumpTerrainBranchToFile(const char* filename)
1897 {
1898 return osgDB::writeNodeFile( *globals->get_scenery()->get_terrain_branch(),
1899 filename );
1900 }
1901
1902 // For debugging
1903 bool
fgDumpNodeToFile(osg::Node * node,const char * filename)1904 fgDumpNodeToFile(osg::Node* node, const char* filename)
1905 {
1906 return osgDB::writeNodeFile(*node, filename);
1907 }
1908
1909 namespace flightgear
1910 {
1911 using namespace osg;
1912
1913 class VisibleSceneInfoVistor : public NodeVisitor, CullStack
1914 {
1915 public:
VisibleSceneInfoVistor()1916 VisibleSceneInfoVistor()
1917 : NodeVisitor(CULL_VISITOR, TRAVERSE_ACTIVE_CHILDREN)
1918 {
1919 setCullingMode(CullSettings::SMALL_FEATURE_CULLING
1920 | CullSettings::VIEW_FRUSTUM_CULLING);
1921 setComputeNearFarMode(CullSettings::DO_NOT_COMPUTE_NEAR_FAR);
1922 }
1923
VisibleSceneInfoVistor(const VisibleSceneInfoVistor & rhs)1924 VisibleSceneInfoVistor(const VisibleSceneInfoVistor& rhs)
1925 {
1926 }
1927
1928 META_NodeVisitor("flightgear","VisibleSceneInfoVistor")
1929
1930 typedef std::map<const std::string,int> InfoMap;
1931
getNodeInfo(Node * node)1932 void getNodeInfo(Node* node)
1933 {
1934 const char* typeName = typeid(*node).name();
1935 classInfo[typeName]++;
1936 const std::string& nodeName = node->getName();
1937 if (!nodeName.empty())
1938 nodeInfo[nodeName]++;
1939 }
1940
dumpInfo()1941 void dumpInfo()
1942 {
1943 using namespace std;
1944 typedef vector<InfoMap::iterator> FreqVector;
1945 cout << "class info:\n";
1946 FreqVector classes;
1947 for (InfoMap::iterator itr = classInfo.begin(), end = classInfo.end();
1948 itr != end;
1949 ++itr)
1950 classes.push_back(itr);
1951 sort(classes.begin(), classes.end(), freqComp);
1952 for (FreqVector::iterator itr = classes.begin(), end = classes.end();
1953 itr != end;
1954 ++itr) {
1955 cout << (*itr)->first << " " << (*itr)->second << "\n";
1956 }
1957 cout << "\nnode info:\n";
1958 FreqVector nodes;
1959 for (InfoMap::iterator itr = nodeInfo.begin(), end = nodeInfo.end();
1960 itr != end;
1961 ++itr)
1962 nodes.push_back(itr);
1963
1964 sort (nodes.begin(), nodes.end(), freqComp);
1965 for (FreqVector::iterator itr = nodes.begin(), end = nodes.end();
1966 itr != end;
1967 ++itr) {
1968 cout << (*itr)->first << " " << (*itr)->second << "\n";
1969 }
1970 cout << endl;
1971 }
1972
doTraversal(Camera * camera,Node * root,Viewport * viewport)1973 void doTraversal(Camera* camera, Node* root, Viewport* viewport)
1974 {
1975 ref_ptr<RefMatrix> projection
1976 = createOrReuseMatrix(camera->getProjectionMatrix());
1977 ref_ptr<RefMatrix> mv = createOrReuseMatrix(camera->getViewMatrix());
1978 if (!viewport)
1979 viewport = camera->getViewport();
1980 if (viewport)
1981 pushViewport(viewport);
1982 pushProjectionMatrix(projection.get());
1983 pushModelViewMatrix(mv.get(), Transform::ABSOLUTE_RF);
1984 root->accept(*this);
1985 popModelViewMatrix();
1986 popProjectionMatrix();
1987 if (viewport)
1988 popViewport();
1989 dumpInfo();
1990 }
1991
apply(Node & node)1992 void apply(Node& node)
1993 {
1994 if (isCulled(node))
1995 return;
1996 pushCurrentMask();
1997 getNodeInfo(&node);
1998 traverse(node);
1999 popCurrentMask();
2000 }
apply(Group & node)2001 void apply(Group& node)
2002 {
2003 if (isCulled(node))
2004 return;
2005 pushCurrentMask();
2006 getNodeInfo(&node);
2007 traverse(node);
2008 popCurrentMask();
2009 }
2010
apply(Transform & node)2011 void apply(Transform& node)
2012 {
2013 if (isCulled(node))
2014 return;
2015 pushCurrentMask();
2016 ref_ptr<RefMatrix> matrix = createOrReuseMatrix(*getModelViewMatrix());
2017 node.computeLocalToWorldMatrix(*matrix,this);
2018 pushModelViewMatrix(matrix.get(), node.getReferenceFrame());
2019 getNodeInfo(&node);
2020 traverse(node);
2021 popModelViewMatrix();
2022 popCurrentMask();
2023 }
2024
apply(Camera & camera)2025 void apply(Camera& camera)
2026 {
2027 // Save current cull settings
2028 CullSettings saved_cull_settings(*this);
2029
2030 // set cull settings from this Camera
2031 setCullSettings(camera);
2032 // inherit the settings from above
2033 inheritCullSettings(saved_cull_settings, camera.getInheritanceMask());
2034
2035 // set the cull mask.
2036 unsigned int savedTraversalMask = getTraversalMask();
2037 bool mustSetCullMask = (camera.getInheritanceMask()
2038 & osg::CullSettings::CULL_MASK) == 0;
2039 if (mustSetCullMask)
2040 setTraversalMask(camera.getCullMask());
2041
2042 osg::RefMatrix* projection = 0;
2043 osg::RefMatrix* modelview = 0;
2044
2045 if (camera.getReferenceFrame()==osg::Transform::RELATIVE_RF) {
2046 if (camera.getTransformOrder()==osg::Camera::POST_MULTIPLY) {
2047 projection = createOrReuseMatrix(*getProjectionMatrix()
2048 *camera.getProjectionMatrix());
2049 modelview = createOrReuseMatrix(*getModelViewMatrix()
2050 * camera.getViewMatrix());
2051 }
2052 else { // pre multiply
2053 projection = createOrReuseMatrix(camera.getProjectionMatrix()
2054 * (*getProjectionMatrix()));
2055 modelview = createOrReuseMatrix(camera.getViewMatrix()
2056 * (*getModelViewMatrix()));
2057 }
2058 } else {
2059 // an absolute reference frame
2060 projection = createOrReuseMatrix(camera.getProjectionMatrix());
2061 modelview = createOrReuseMatrix(camera.getViewMatrix());
2062 }
2063 if (camera.getViewport())
2064 pushViewport(camera.getViewport());
2065
2066 pushProjectionMatrix(projection);
2067 pushModelViewMatrix(modelview, camera.getReferenceFrame());
2068
2069 traverse(camera);
2070
2071 // restore the previous model view matrix.
2072 popModelViewMatrix();
2073
2074 // restore the previous model view matrix.
2075 popProjectionMatrix();
2076
2077 if (camera.getViewport()) popViewport();
2078
2079 // restore the previous traversal mask settings
2080 if (mustSetCullMask)
2081 setTraversalMask(savedTraversalMask);
2082
2083 // restore the previous cull settings
2084 setCullSettings(saved_cull_settings);
2085 }
2086
2087 protected:
2088 // sort in reverse
freqComp(const InfoMap::iterator & lhs,const InfoMap::iterator & rhs)2089 static bool freqComp(const InfoMap::iterator& lhs, const InfoMap::iterator& rhs)
2090 {
2091 return lhs->second > rhs->second;
2092 }
2093 InfoMap classInfo;
2094 InfoMap nodeInfo;
2095 };
2096
printVisibleSceneInfo(FGRenderer * renderer)2097 bool printVisibleSceneInfo(FGRenderer* renderer)
2098 {
2099 osgViewer::Viewer* viewer = renderer->getViewer();
2100 VisibleSceneInfoVistor vsv;
2101 Viewport* vp = 0;
2102 if (!viewer->getCamera()->getViewport() && viewer->getNumSlaves() > 0) {
2103 const osg::View::Slave& slave = viewer->getSlave(0);
2104 vp = slave._camera->getViewport();
2105 }
2106 vsv.doTraversal(viewer->getCamera(), viewer->getSceneData(), vp);
2107 return true;
2108 }
2109
2110 }
2111 // end of renderer.cxx
2112