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source: GTP/trunk/Lib/Vis/OnlineCullingCHC/OGRE/src/OgreOcclusionCullingSceneManager.cpp @ 2360

Revision 2360, 74.6 KB checked in by mattausch, 18 years ago (diff)

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1	#include "OgreOcclusionCullingSceneManager.h"
2	#include "OgreVisibilityOptionsManager.h"
3	#include <OgreMath.h>
4	#include <OgreIteratorWrappers.h>
5	#include <OgreRenderSystem.h>
6	#include <OgreCamera.h>
7	#include <OgreLogManager.h>
8	#include <OgreStringConverter.h>
9	#include <OgreEntity.h>
10	#include <OgreSubEntity.h>
11	#include <OgreMaterialManager.h>
12	#include <OgreIteratorWrappers.h>
13	#include <OgreHeightmapTerrainPageSource.h>
14	#include "ViewCellsManager.h"
15	#include <OgreConfigFile.h>
16	#include "OgreTypeConverter.h"
17	#include "OgreMeshInstance.h"
18	#include "OgreBoundingBoxConverter.h"
19	#include <OgreManualObject.h>
20	#include "IntersectableWrapper.h"
21	#include "IVReader.h"
22	#include "ObjReader.h"
23	#include "OgreOcclusionQueriesQueryManager.h"
24	#include "VisibilityInfo.h"
25	#include "Preprocessor.h"
26
27
28	namespace Ogre {
29
30	//-----------------------------------------------------------------------
31	OcclusionCullingSceneManager::OcclusionCullingSceneManager(
32	const String& name,
33	GtpVisibility::VisibilityManager *visManager):
34	TerrainSceneManager(name),
35	mVisibilityManager(visManager),
36	mShowVisualization(false),
37	mRenderNodesForViz(false),
38	mRenderNodesContentForViz(false),
39	mVisualizeCulledNodes(false),
40	mLeavePassesInQueue(0),
41	mDelayRenderTransparents(true),
42	mUseDepthPass(false),
43	mIsDepthPassPhase(false),
44	mUseItemBuffer(false),
45	mIsItemBufferPhase(false),
46	mCurrentEntityId(1),
47	mEnableDepthWrite(true),
48	mSkipTransparents(false),
49	mRenderTransparentsForItemBuffer(true),
50	mExecuteVertexProgramForAllPasses(false),
51	mIsHierarchicalCulling(false),
52	mViewCellsLoaded(false),
53	mUseViewCells(false),
54	mUseVisibilityFilter(false),
55	mCurrentViewCell(NULL),
56	mElementaryViewCell(NULL),
57	mDeleteQueueAfterRendering(true),
58	mNormalExecution(false),
59	mShowViewCells(false),
60	mViewCellsGeometryLoaded(false),
61	mShowTerrain(false),
62	mViewCellsFilename(""),
63	mFilename("terrain"),
64	mFlushRate(10),
65	mCurrentFrame(0),
66	mUseVisibilityQueries(true),
67	mUseFromPointQueries(false),
68	mQueryMode(NODE_QUERIES),
69	mResetMaterialForQueries(false),
70	mRenderPvsForViz(false)
71	{
72	Ogre::LogManager::getSingleton().
73	logMessage("creating occlusion culling scene manager");
74
75	mHierarchyInterface = new OctreeHierarchyInterface(this, mDestRenderSystem);
76
77	if (0)
78	{
79	mDisplayNodes = true;
80	mShowBoundingBoxes = true;
81	mShowBoxes = true;
82	}
83
84	// set maxdepth to reasonable value
85	mMaxDepth = 50;
86
87	mObjReader = new ObjReader(this);
88	}
89	//-----------------------------------------------------------------------
90	void OcclusionCullingSceneManager::InitDepthPass()
91	{
92	MaterialPtr depthMat =
93	MaterialManager::getSingleton().getByName("Visibility/DepthPass");
94
95	if (depthMat.isNull())
96	{
97	depthMat = MaterialManager::getSingleton().create(
98	"Visibility/DepthPass",
99	ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME);
100
101	mDepthPass = depthMat->getTechnique(0)->getPass(0);
102	mDepthPass->setColourWriteEnabled(false);
103	mDepthPass->setDepthWriteEnabled(true);
104	mDepthPass->setLightingEnabled(false);
105	}
106	else
107	{
108	mDepthPass = depthMat->getTechnique(0)->getPass(0);
109	}
110	}
111	//-----------------------------------------------------------------------
112	OcclusionCullingSceneManager::~OcclusionCullingSceneManager()
113	{
114	CLEAR_CONTAINER(mObjects);
115
116	OGRE_DELETE(mHierarchyInterface);
117	OGRE_DELETE(mCurrentViewCell);
118
119	OGRE_DELETE(mObjReader);
120	}
121	//-----------------------------------------------------------------------
122	void OcclusionCullingSceneManager::InitItemBufferPass()
123	{
124	MaterialPtr itemBufferMat = MaterialManager::getSingleton().
125	getByName("Visibility/ItemBufferPass");
126
127	if (itemBufferMat.isNull())
128	{
129	// Init
130	itemBufferMat =
131	MaterialManager::getSingleton().create("Visibility/ItemBufferPass",
132	ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME);
133
134	mItemBufferPass = itemBufferMat->getTechnique(0)->getPass(0);
135	mItemBufferPass->setColourWriteEnabled(true);
136	mItemBufferPass->setDepthWriteEnabled(true);
137	mItemBufferPass->setLightingEnabled(true);
138	//mItemBufferPass->setLightingEnabled(false);
139	}
140	else
141	{
142	mItemBufferPass = itemBufferMat->getTechnique(0)->getPass(0);
143	}
144	//mItemBufferPass->setAmbient(1, 1, 0);
145	}
146	//-------------------------------------------------------------------------
147	#if 1
148	void OcclusionCullingSceneManager::setWorldGeometry(DataStreamPtr& stream,
149	const String& typeName)
150	{
151	// Clear out any existing world resources (if not default)
152	if (ResourceGroupManager::getSingleton().getWorldResourceGroupName() !=
153	ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME)
154	{
155	ResourceGroupManager::getSingleton().clearResourceGroup(
156	ResourceGroupManager::getSingleton().getWorldResourceGroupName());
157	}
158
159	destroyLevelIndexes();
160	mTerrainPages.clear();
161
162	// Load the configuration
163	loadConfig(stream);
164
165	//////////////
166	// file loading
167
168	// load the scene
169	LoadScene(mFilename, mViewCellsFilename);
170
171	// load view cells: load later ...
172	if (0) mViewCellsLoaded = LoadViewCells(mViewCellsFilename);
173
174	if (mShowTerrain)
175	{
176	initLevelIndexes();
177
178	// Resize the octree, allow for 1 page for now
179	float max_x = mOptions.scale.x * mOptions.pageSize;
180	float max_y = mOptions.scale.y;// * mOptions.pageSize;
181	float max_z = mOptions.scale.z * mOptions.pageSize;
182
183	if (1)
184	{
185	// keep octree equal at all sides so nodes adapt better to small objects
186	float maxAxis = std::max(max_x, max_y);
187	maxAxis = std::max(maxAxis, max_z);
188	resize(AxisAlignedBox( 0, 0, 0, maxAxis, maxAxis, maxAxis));
189	}
190	else
191	{
192	resize(AxisAlignedBox( 0, 0, 0, max_x, max_y, max_z));
193	}
194
195	setupTerrainMaterial();
196	setupTerrainPages();
197	}
198	}
199	#endif
200
201	//-------------------------------------------------------------------------
202	void OcclusionCullingSceneManager::loadConfig(DataStreamPtr& stream)
203	{
204	// Set up the options
205	ConfigFile config;
206	String val;
207
208	config.load(stream);
209
210	LogManager::getSingleton().logMessage("**** OcclusionCullingSceneManager Options ******");
211
212	val = config.getSetting("DepthPass");
213
214	if (!val.empty())
215	{
216	if ( val == "yes" )
217	mUseDepthPass = true;
218	else
219	mUseDepthPass = false;
220	}
221
222	val = config.getSetting("ExecuteVertexProgramForDepth");
223
224	if (!val.empty())
225	{
226	if ( val == "yes" )
227	mExecuteVertexProgramForAllPasses = true;
228	else
229	mExecuteVertexProgramForAllPasses = false;
230	}
231
232	val = config.getSetting("UseVisibilityQueries");
233
234	if (!val.empty())
235	{
236	if ( val == "yes" )
237	mUseVisibilityQueries = true;
238	else
239	mUseVisibilityQueries = false;
240	}
241
242	val = config.getSetting("UseFromPointQueries");
243
244	if (!val.empty())
245	{
246	if (val == "yes")
247	mUseFromPointQueries = true;
248	else
249	mUseFromPointQueries = false;
250	}
251
252	val = config.getSetting("QueryObjectsMode");
253
254	if (!val.empty())
255	{
256	if (val == "EXACT")
257	mQueryMode = EXACT_QUERIES;
258	else if (val == "NODE")
259	mQueryMode = NODE_QUERIES;
260	else
261	mQueryMode = APPROXIMATE_QUERIES;
262	}
263
264	val = config.getSetting("ResetMaterialForQueries");
265
266	if (!val.empty())
267	{
268	if (val == "yes")
269	mResetMaterialForQueries = true;
270	else
271	mResetMaterialForQueries = false;
272	}
273
274	val = config.getSetting("FlushQueue");
275
276	if (!val.empty())
277	{
278	if ( val == "yes" )
279	mDeleteQueueAfterRendering = true;
280	else
281	mDeleteQueueAfterRendering = false;
282	}
283
284	val = config.getSetting("Scene");
285
286	if (!val.empty())
287	{
288	mFilename = val.c_str();
289
290	// load terrain instead of scene
291	if (mFilename == "terrain")
292	{
293	mShowTerrain = true;
294	LogManager::getSingleton().logMessage("loading terrain");
295	}
296	else
297	{
298	mShowTerrain = false;
299	LogManager::getSingleton().logMessage("loading geometry");
300	}
301	}
302
303	if (!mShowTerrain)
304	{
305	val = config.getSetting("ViewCells");
306
307	if (!val.empty())
308	{
309	mViewCellsFilename = val;
310	}
311	}
312
313	val = config.getSetting("OnlineCullingAlgorithm");
314
315	if (!val.empty())
316	{
317	GtpVisibility::VisibilityEnvironment::CullingManagerType algorithm;
318
319	if (val == "CHC")
320	{
321	algorithm =
322	GtpVisibility::VisibilityEnvironment::COHERENT_HIERARCHICAL_CULLING;
323	LogManager::getSingleton().logMessage("Using chc algorithm");
324	}
325	else if (val == "SWC")
326	{
327	algorithm =
328	GtpVisibility::VisibilityEnvironment::STOP_AND_WAIT_CULLING;
329
330	LogManager::getSingleton().logMessage("Using stop and wait algorithm");
331	}
332	else if (val == "RUC")
333	{
334	algorithm =
335	GtpVisibility::VisibilityEnvironment::RANDOM_UPDATE_CULLING;
336
337	LogManager::getSingleton().logMessage("Using random update culling");
338	}
339	else if (val == "VFC")
340	{
341	algorithm =
342	GtpVisibility::VisibilityEnvironment::FRUSTUM_CULLING;
343
344	LogManager::getSingleton().logMessage("Using frustum culling algorithm");
345	}
346	else // default rendering
347	{
348	algorithm =
349	GtpVisibility::VisibilityEnvironment::NUM_CULLING_MANAGERS;
350
351	mNormalExecution = true;
352	LogManager::getSingleton().logMessage("Using default octree scene manager rendering");
353	}
354
355	mVisibilityManager->SetCullingManager(algorithm);
356	}
357
358	/////////////
359	// terrain options
360
361	if (mUseDepthPass)
362	LogManager::getSingleton().logMessage("using depth pass");
363	else
364	LogManager::getSingleton().logMessage("not using depth pass");
365
366	if (mExecuteVertexProgramForAllPasses)
367	LogManager::getSingleton().logMessage("executing vertex program for passes");
368	else
369	LogManager::getSingleton().logMessage("not executing vertex program for passes");
370
371	if (mUseVisibilityQueries)
372	LogManager::getSingleton().logMessage("using visibility queries");
373	else
374	LogManager::getSingleton().logMessage("not using visibility queries");
375
376	if (mUseFromPointQueries)
377	LogManager::getSingleton().logMessage("using from point queries");
378	else
379	LogManager::getSingleton().logMessage("not using from point queries");
380
381	if (mQueryMode == EXACT_QUERIES)
382	LogManager::getSingleton().logMessage("using exact queries");
383	else if (mQueryMode == NODE_QUERIES)
384	LogManager::getSingleton().logMessage("using node queries");
385	else if (mQueryMode == APPROXIMATE_QUERIES)
386	LogManager::getSingleton().logMessage("using approximate queries");
387
388	if (mResetMaterialForQueries)
389	LogManager::getSingleton().logMessage("resetting material for queries");
390	else
391	LogManager::getSingleton().logMessage("resetting material for queries");
392
393	if (mDeleteQueueAfterRendering)
394	LogManager::getSingleton().logMessage("flushing queue after some frames");
395	else
396	LogManager::getSingleton().logMessage("not flushing queue after some frames");
397
398	if (!mShowTerrain)
399	return;
400
401	val = config.getSetting("DetailTile");
402	if (!val.empty())
403	setDetailTextureRepeat(atoi(val.c_str()));
404
405	val = config.getSetting("MaxMipMapLevel");
406	if (!val.empty())
407	setMaxGeoMipMapLevel(atoi(val.c_str()));
408
409
410	val = config.getSetting("PageSize");
411	if (!val.empty())
412	setPageSize(atoi(val.c_str()));
413	else
414	OGRE_EXCEPT(Exception::ERR_ITEM_NOT_FOUND, "Missing option 'PageSize'",
415	"TerrainSceneManager::loadConfig");
416
417
418	val = config.getSetting("TileSize");
419	if (!val.empty())
420	setTileSize(atoi(val.c_str()));
421	else
422	OGRE_EXCEPT(Exception::ERR_ITEM_NOT_FOUND, "Missing option 'TileSize'",
423	"TerrainSceneManager::loadConfig");
424
425	Vector3 v = Vector3::UNIT_SCALE;
426
427	val = config.getSetting( "PageWorldX" );
428	if ( !val.empty() )
429	v.x = atof( val.c_str() );
430
431	val = config.getSetting( "MaxHeight" );
432	if ( !val.empty() )
433	v.y = atof( val.c_str() );
434
435	val = config.getSetting( "PageWorldZ" );
436	if ( !val.empty() )
437	v.z = atof( val.c_str() );
438
439	// Scale x/z relative to pagesize
440	v.x /= mOptions.pageSize;
441	v.z /= mOptions.pageSize;
442	setScale(v);
443
444	val = config.getSetting( "MaxPixelError" );
445	if ( !val.empty() )
446	setMaxPixelError(atoi( val.c_str() ));
447
448	mDetailTextureName = config.getSetting( "DetailTexture" );
449
450	mWorldTextureName = config.getSetting( "WorldTexture" );
451
452	if ( config.getSetting( "VertexColours" ) == "yes" )
453	mOptions.coloured = true;
454
455	if ( config.getSetting( "VertexNormals" ) == "yes" )
456	mOptions.lit = true;
457
458	if ( config.getSetting( "UseTriStrips" ) == "yes" )
459	setUseTriStrips(true);
460
461	if ( config.getSetting( "VertexProgramMorph" ) == "yes" )
462	setUseLODMorph(true);
463
464	val = config.getSetting( "LODMorphStart");
465	if ( !val.empty() )
466	setLODMorphStart(atof(val.c_str()));
467
468	val = config.getSetting( "CustomMaterialName" );
469	if ( !val.empty() )
470	setCustomMaterial(val);
471
472	val = config.getSetting( "MorphLODFactorParamName" );
473	if ( !val.empty() )
474	setCustomMaterialMorphFactorParam(val);
475
476	val = config.getSetting( "MorphLODFactorParamIndex" );
477	if ( !val.empty() )
478	setCustomMaterialMorphFactorParam(atoi(val.c_str()));
479
480	// Now scan through the remaining settings, looking for any PageSource
481	// prefixed items
482	String pageSourceName = config.getSetting("PageSource");
483	if (pageSourceName == "")
484	{
485	OGRE_EXCEPT(Exception::ERR_ITEM_NOT_FOUND, "Missing option 'PageSource'",
486	"TerrainSceneManager::loadConfig");
487	}
488
489	TerrainPageSourceOptionList optlist;
490	ConfigFile::SettingsIterator setIt = config.getSettingsIterator();
491	while (setIt.hasMoreElements())
492	{
493	String name = setIt.peekNextKey();
494	String value = setIt.getNext();
495	if (StringUtil::startsWith(name, pageSourceName, false))
496	{
497	optlist.push_back(TerrainPageSourceOption(name, value));
498	}
499	}
500
501	// set the page source
502	selectPageSource(pageSourceName, optlist);
503
504
505	LogManager::getSingleton().logMessage("**** OcclusionCullingSceneManager Options Finished ******");
506	}
507	//-----------------------------------------------------------------------
508	void OcclusionCullingSceneManager::MailPvsObjects()
509	{
510	GtpVisibilityPreprocessor::ObjectPvsIterator pit =
511	mCurrentViewCell->GetPvs().GetIterator();
512
513	while (pit.HasMoreEntries())
514	{
515	GtpVisibilityPreprocessor::Intersectable *obj = pit.Next();
516
517	if (obj->Type() !=
518	GtpVisibilityPreprocessor::Intersectable::ENGINE_INTERSECTABLE)
519	continue;
520
521	EngineIntersectable oi = static_cast<EngineIntersectable >(obj);
522
523	EntityContainer *entries = oi->GetItem();
524	EntityContainer::const_iterator eit, eit_end = entries->end();
525
526	for (eit = entries->begin(); eit != eit_end; ++ eit)
527	{
528	(*eit)->setUserAny(Any((int)0));
529	}
530	}
531	}
532	//-----------------------------------------------------------------------
533	void OcclusionCullingSceneManager::ShowViewCellsGeometry()
534	{/*
535	// show only current view cell
536	if (!mShowViewCells)
537	{
538	const int id = mCurrentViewCell->GetId();
539
540	MovableMap::iterator fit = mViewCellsGeometry.find(id);
541
542	if ((fit != mViewCellsGeometry.end()) && (*fit).second)
543	(*fit).second->_updateRenderQueue(getRenderQueue());
544	}
545	else
546	{
547	MovableMap::const_iterator mit, mit_end = mViewCellsGeometry.end();
548
549	for (mit = mViewCellsGeometry.begin(); mit != mit_end; ++ mit)
550	{
551	if ((*mit).second)
552	(*mit).second->_updateRenderQueue(getRenderQueue());
553	}
554	}*/
555	}
556	//-----------------------------------------------------------------------
557	void OcclusionCullingSceneManager::RenderPvsEntry(GtpVisibilityPreprocessor::Intersectable *obj)
558	{
559	switch (obj->Type())
560	{
561	case GtpVisibilityPreprocessor::Intersectable::OGRE_MESH_INSTANCE:
562	{
563	OgreMeshInstance omi = static_cast<OgreMeshInstance >(obj);
564	omi->GetEntity()->_updateRenderQueue(getRenderQueue());
565	}
566	break;
567
568	case GtpVisibilityPreprocessor::Intersectable::ENGINE_INTERSECTABLE:
569	{
570	EngineIntersectable oi = static_cast<EngineIntersectable >(obj);
571
572	EntityContainer *entries = oi->GetItem();
573	EntityContainer::const_iterator eit, eit_end = entries->end();
574
575	for (eit = entries->begin(); eit != eit_end; ++ eit)
576	{
577	Entity ent = eit;
578	// mailing hack
579	Any newAny = ent->getUserAny();
580	int flt = any_cast<int>(newAny);
581
582	if (any_cast<int>(newAny) == 0)
583	{
584	ent->setUserAny(Any((int)1));
585	ent->_updateRenderQueue(getRenderQueue());
586	}
587	}
588	}
589	break;
590	default:
591	break;
592	}
593	}
594	//-----------------------------------------------------------------------
595	void OcclusionCullingSceneManager::SetObjectVisible(GtpVisibilityPreprocessor::Intersectable *entry,
596	const bool visible)
597	{
598	switch (entry->Type())
599	{
600	case GtpVisibilityPreprocessor::Intersectable::OGRE_MESH_INSTANCE:
601	{
602	OgreMeshInstance omi = static_cast<OgreMeshInstance >(entry);
603	omi->GetEntity()->setVisible(visible);
604	//GtpVisibilityPreprocessor::Debug << "assigned id " << omi->GetId() << endl;
605	}
606	break;
607	case GtpVisibilityPreprocessor::Intersectable::ENGINE_INTERSECTABLE:
608	{
609	EngineIntersectable oi = static_cast<EngineIntersectable >(entry);
610
611	EntityContainer *entries = oi->GetItem();
612	EntityContainer::const_iterator eit, eit_end = entries->end();
613	for (eit = entries->begin(); eit != eit_end; ++ eit)
614	{
615	Entity ent = eit;
616	ent->setVisible(visible);
617	}
618	}
619	break;
620	default:
621	break;
622	}
623	}
624	//-----------------------------------------------------------------------
625	void OcclusionCullingSceneManager::PrepareVisualization(Camera *cam)
626	{
627	// add player camera for visualization purpose
628	try
629	{
630	Camera *c;
631	if ((c = getCamera("PlayerCam")) != NULL)
632	{
633	getRenderQueue()->addRenderable(c);
634	}
635	}
636	catch (...)
637	{
638	// ignore
639	}
640
641	if (mRenderPvsForViz)
642	{
643	// show current view cell geometry
644	if (mCurrentViewCell)// && mCurrentViewCell->GetMesh())
645	{
646	//const bool showSingleViewCell = true;
647	if (mViewCellsGeometryLoaded)
648	{
649	ShowViewCellsGeometry();
650	}
651
652	//////////
653	//-- set PVS of view cell visible
654
655	GtpVisibilityPreprocessor::ObjectPvsIterator pit =
656	mCurrentViewCell->GetPvs().GetIterator();
657
658	MailPvsObjects();
659
660	while (pit.HasMoreEntries())
661	{
662	RenderPvsEntry(pit.Next());
663	}
664	}
665	}
666	else
667	{
668	// add bounding boxes of rendered objects
669	if (1)
670	{
671	for (BoxList::iterator it = mBoxes.begin(); it != mBoxes.end(); ++it)
672	{
673	getRenderQueue()->addRenderable(*it);
674	}
675	}
676	if (mRenderNodesForViz \|\| mRenderNodesContentForViz)
677	{
678	// HACK: change node material so it is better suited for visualization
679	MaterialPtr nodeMat = MaterialManager::getSingleton().getByName("Core/NodeMaterial");
680	nodeMat->setAmbient(1, 1, 0);
681	nodeMat->setLightingEnabled(true);
682	nodeMat->getTechnique(0)->getPass(0)->removeAllTextureUnitStates();
683
684	for (NodeList::iterator it = mVisible.begin(); it != mVisible.end(); ++it)
685	{
686	if (mRenderNodesForViz)
687	{
688	// render the visible leaf nodes
689	if ((*it)->numAttachedObjects() &&
690	!(*it)->numChildren() &&
691	((*it)->getAttachedObject(0)->getMovableType() == "Entity") &&
692	(*it)->getAttachedObject(0)->isVisible())
693	{
694	getRenderQueue()->addRenderable((*it));
695	//(*it)->_addToRenderQueue(cam, getRenderQueue(), false);
696	}
697
698	// render bounding boxes of nodes
699	if (0) (*it)->_addBoundingBoxToQueue(getRenderQueue());
700	}
701
702	// add renderables itself
703	if (mRenderNodesContentForViz)
704	{
705	(*it)->_addToRenderQueue(cam, getRenderQueue(), false);
706	}
707	}
708	}
709	}
710	}
711	//-----------------------------------------------------------------------
712	const Pass OcclusionCullingSceneManager::_setPass(const Pass pass, bool evenIfSuppressed)
713	{
714	if (mNormalExecution)
715	{
716	return TerrainSceneManager::_setPass(pass, evenIfSuppressed);
717	}
718
719	// problem: setting vertex program is not efficient
720	//Pass *usedPass = ((mIsDepthPassPhase && !pass->hasVertexProgram()) ? mDepthPass : pass);
721
722	// set depth fill pass if we currently do not make an aabb occlusion query
723	const bool useDepthPass =
724	mUseDepthPass && mIsDepthPassPhase && !mHierarchyInterface->IsBoundingBoxQuery();
725
726	const IlluminationRenderStage savedStage = mIlluminationStage;
727
728	if (useDepthPass)
729	{
730	// set illumination stage to NONE so no shadow material is used
731	// for depth pass or for occlusion query
732	if (mIsDepthPassPhase \|\| mHierarchyInterface->IsBoundingBoxQuery())
733	{
734	mIlluminationStage = IRS_NONE;
735	}
736
737	//////////////////
738	//-- set vertex program of current pass in order to set correct depth
739	if (mExecuteVertexProgramForAllPasses &&
740	mIsDepthPassPhase &&
741	pass->hasVertexProgram())
742	{
743	// add vertex program of current pass to depth pass
744	mDepthPass->setVertexProgram(pass->getVertexProgramName());
745
746	if (mDepthPass->hasVertexProgram())
747	{
748	const GpuProgramPtr& prg = mDepthPass->getVertexProgram();
749	// Load this program if not done already
750	if (!prg->isLoaded())
751	prg->load();
752	// Copy params
753	mDepthPass->setVertexProgramParameters(pass->getVertexProgramParameters());
754	}
755	}
756	else if (mDepthPass->hasVertexProgram())
757	{ // reset vertex program
758	mDepthPass->setVertexProgram("");
759	}
760	}
761
762	// using depth pass instead
763	const Pass *usedPass = useDepthPass ? mDepthPass : pass;
764
765	#if 0 // tmp matt: pass is now const
766	// save old depth write: needed for item buffer
767	const bool isDepthWrite = usedPass->getDepthWriteEnabled();
768
769	// global option which enables / disables depth writes
770	if (!mEnableDepthWrite)
771	usedPass->setDepthWriteEnabled(false);
772	#endif
773
774	///////////////
775	//-- set actual pass here
776
777	const Pass *result = SceneManager::_setPass(usedPass, evenIfSuppressed);
778
779
780	// reset depth write
781	#if 0 // tmp matt: this is now a const function
782	if (!mEnableDepthWrite)
783	usedPass->setDepthWriteEnabled(isDepthWrite);
784	#endif
785	// reset illumination stage
786	mIlluminationStage = savedStage;
787
788	return result;
789	}
790	//-----------------------------------------------------------------------
791	void OcclusionCullingSceneManager::myFindVisibleObjects(Camera* cam,
792	bool onlyShadowCasters)
793	{
794	if (mShowVisualization)
795	{
796	//////////////
797	//-- show visible scene nodes and octree bounding boxes from last frame
798
799	PrepareVisualization(cam);
800
801	// lists only used for visualization
802	mVisible.clear();
803	mBoxes.clear();
804
805	return;
806	}
807
808	///////////
809	//-- set visibility according to pvs of current view cell
810
811	UpdatePvs(cam);
812
813	// standard rendering in first pass
814	// hierarchical culling interleaves identification
815	// and rendering of objects in _renderVisibibleObjects
816
817	// for the shadow pass we use only standard rendering
818	// because shadows have low occlusion anyway
819	if ((mShadowTechnique == SHADOWTYPE_TEXTURE_MODULATIVE &&
820	mIlluminationStage == IRS_RENDER_TO_TEXTURE) \|\|
821	mNormalExecution)
822	{
823	TerrainSceneManager::_findVisibleObjects(cam, onlyShadowCasters);
824	}
825	else if (mUseDepthPass)
826	{
827	mVisible.clear();
828	mBoxes.clear();
829
830	// clear render queue before depth pass
831	getRenderQueue()->clear();
832
833	// render scene once in order to fill depth buffer
834	RenderHierarchicalCulling();
835	}
836	}
837	//-----------------------------------------------------------------------
838	void OcclusionCullingSceneManager::_renderVisibleObjects()
839	{
840	if (mNormalExecution)
841	{
842	// the standard octree rendering mode
843	TerrainSceneManager::_renderVisibleObjects();
844	//getRenderQueue()->clear(flushQueue);
845	return;
846	}
847
848	// clear render queue
849	// fully reset it after some frames
850	const bool flushQueue =
851	mDeleteQueueAfterRendering && ((mCurrentFrame % mFlushRate) == 0);
852
853	++ mCurrentFrame;
854
855	// create material for item buffer pass
856	InitItemBufferPass();
857
858	// save ambient light to reset later
859	ColourValue savedAmbient = mAmbientLight;
860
861	////////////////////
862	//-- apply standard rendering for some modes
863	//-- (e.g., the visualization mode, the shadow pass)
864
865	// also go here if find visible object is disabled
866	// (then the render queue is already filled)
867	if (!mFindVisibleObjects \|\|
868	mUseDepthPass \|\| mShowVisualization \|\|
869	(mShadowTechnique == SHADOWTYPE_TEXTURE_MODULATIVE &&
870	mIlluminationStage == IRS_RENDER_TO_TEXTURE))
871	{
872	IlluminationRenderStage savedStage = mIlluminationStage;
873
874	if (mShowVisualization)
875	// disable illumination stage to prevent rendering shadows
876	mIlluminationStage = IRS_NONE;
877
878	// standard rendering for shadow maps because of performance
879	TerrainSceneManager::_renderVisibleObjects();
880
881	mIlluminationStage = savedStage;
882	}
883	else //-- the hierarchical culling algorithm
884	{
885	// note matt: this is also called in TerrainSceneManager: really necessary?
886	mDestRenderSystem->setLightingEnabled(false);
887
888	if (mUseItemBuffer)
889	{
890	// don't render backgrounds for item buffer
891	clearSpecialCaseRenderQueues();
892	getRenderQueue()->clear();
893	}
894
895	////////////////////
896	//-- hierarchical culling
897
898	// the objects of different layers (e.g., background, scene,
899	// overlay) must be identified and rendered one after another
900
901	// first render all early skies
902	clearSpecialCaseRenderQueues();
903	addSpecialCaseRenderQueue(RENDER_QUEUE_BACKGROUND);
904	addSpecialCaseRenderQueue(RENDER_QUEUE_SKIES_EARLY);
905	setSpecialCaseRenderQueueMode(SceneManager::SCRQM_INCLUDE);
906
907	TerrainSceneManager::_renderVisibleObjects();
908
909	#ifdef GTP_VISIBILITY_MODIFIED_OGRE
910	// delete previously rendered content
911	_deleteRenderedQueueGroups();
912	#endif
913
914	///////////////////
915	//-- prepare queue for visible objects (i.e., all but overlay and skies late)
916
917	clearSpecialCaseRenderQueues();
918	addSpecialCaseRenderQueue(RENDER_QUEUE_SKIES_LATE);
919	addSpecialCaseRenderQueue(RENDER_QUEUE_OVERLAY);
920
921	// exclude these queues from hierarchical rendering
922	setSpecialCaseRenderQueueMode(SceneManager::SCRQM_EXCLUDE);
923
924	// set all necessary parameters for
925	// hierarchical visibility culling and rendering
926	InitVisibilityCulling(mCameraInProgress);
927
928
929	/**
930	* the hierarchical culling algorithm
931	* for depth pass: we just find objects and update depth buffer
932	* for "delayed" rendering: we render some passes afterwards
933	* e.g., transparents, because they need front-to-back sorting
934	**/
935
936	mVisibilityManager->ApplyVisibilityCulling();
937
938	// delete remaining renderables from queue:
939	// all which are not in mLeavePassesInQueue)
940	#ifdef GTP_VISIBILITY_MODIFIED_OGRE
941	_deleteRenderedQueueGroups(mLeavePassesInQueue);
942	#endif
943
944	/////////////
945	//-- reset parameters needed during hierarchical rendering
946
947	mIsItemBufferPhase = false;
948	mSkipTransparents = false;
949	mIsHierarchicalCulling = false;
950
951	mLeavePassesInQueue = 0;
952
953	/////////////
954	//-- now we can render all remaining queue objects
955	//-- used for depth pass, transparents, overlay
956
957	clearSpecialCaseRenderQueues();
958
959	TerrainSceneManager::_renderVisibleObjects();
960	} // end hierarchical culling
961
962	// HACK: set the new render level index, important to avoid cracks
963	// in terrain caused by LOD
964	TerrainRenderable::NextRenderLevelIndex();
965
966	// reset ambient light
967	setAmbientLight(savedAmbient);
968
969	// remove rest from queue
970	getRenderQueue()->clear(flushQueue);
971
972
973	if (0) WriteLog(); // write out stats
974	}
975	//-----------------------------------------------------------------------
976	void OcclusionCullingSceneManager::_updateSceneGraph(Camera* cam)
977	{
978	if (!mNormalExecution)
979	{
980	mVisibilityManager->GetCullingManager()->SetHierarchyInterface(mHierarchyInterface);
981	mHierarchyInterface->SetRenderSystem(mDestRenderSystem);
982	}
983
984	TerrainSceneManager::_updateSceneGraph(cam);
985	}
986	//-----------------------------------------------------------------------
987	bool OcclusionCullingSceneManager::setOption(const String & key, const void * val)
988	{
989	if (key == "UseDepthPass")
990	{
991	mUseDepthPass = (static_cast<const bool >(val));
992	return true;
993	}
994	if (key == "PrepareVisualization")
995	{
996	mShowVisualization = (static_cast<const bool >(val));
997	return true;
998	}
999	if (key == "RenderNodesForViz")
1000	{
1001	mRenderNodesForViz = (static_cast<const bool >(val));
1002	return true;
1003	}
1004	if (key == "RenderNodesContentForViz")
1005	{
1006	mRenderNodesContentForViz = (static_cast<const bool >(val));
1007	return true;
1008	}
1009	if (key == "RenderPvsForViz")
1010	{
1011	mRenderPvsForViz = (static_cast<const bool >(val));
1012	return true;
1013	}
1014	if (key == "SkyBoxEnabled")
1015	{
1016	mSkyBoxEnabled = (static_cast<const bool >(val));
1017	return true;
1018	}
1019	if (key == "SkyPlaneEnabled")
1020	{
1021	mSkyPlaneEnabled = (static_cast<const bool >(val));
1022	return true;
1023	}
1024	if (key == "SkyDomeEnabled")
1025	{
1026	mSkyDomeEnabled = (static_cast<const bool >(val));
1027	return true;
1028	}
1029	if (key == "VisualizeCulledNodes")
1030	{
1031	mVisualizeCulledNodes = (static_cast<const bool >(val));
1032	return true;
1033	}
1034	if (key == "DelayRenderTransparents")
1035	{
1036	mDelayRenderTransparents = (static_cast<const bool >(val));
1037	return true;
1038	}
1039	if (key == "DepthWrite")
1040	{
1041	mEnableDepthWrite = (static_cast<const bool >(val));
1042	return true;
1043	}
1044	if (key == "UseItemBuffer")
1045	{
1046	mUseItemBuffer = (static_cast<const bool >(val));
1047	return true;
1048	}
1049	if (key == "ExecuteVertexProgramForAllPasses")
1050	{
1051	mExecuteVertexProgramForAllPasses = (static_cast<const bool >(val));
1052	return true;
1053	}
1054	if (key == "RenderTransparentsForItemBuffer")
1055	{
1056	mRenderTransparentsForItemBuffer = (static_cast<const bool >(val));
1057	return true;
1058	}
1059	else if (key == "FlushQueue")
1060	{
1061	mDeleteQueueAfterRendering = (static_cast<const bool >(val));
1062	return true;
1063	}
1064	if (key == "NodeVizScale")
1065	{
1066	OctreeNode::setVizScale(static_cast<const float >(val));
1067	return true;
1068	}
1069	if (key == "UseViewCells")
1070	{
1071	if (!mViewCellsLoaded)
1072	{
1073	// try to load view cells
1074	mViewCellsLoaded = LoadViewCells(mViewCellsFilename);
1075	}
1076
1077	if (!mViewCellsLoaded)
1078	return false;
1079
1080	// only use this option if view cells are available
1081	mUseViewCells = static_cast<const bool >(val);
1082
1083	// reset view cell
1084	OGRE_DELETE(mCurrentViewCell);
1085
1086	if (mUseViewCells)
1087	{
1088	mCurrentViewCell = mViewCellsManager->GenerateViewCell();
1089	}
1090
1091	// view cell corresponding to leaf in the view cell hierarchy
1092	mElementaryViewCell = NULL;
1093
1094	// all objects are set to invisible per default
1095	SetObjectsVisible(!mUseViewCells);
1096
1097	MovableObjectIterator movit = getMovableObjectIterator("Entity");
1098	while (movit.hasMoreElements())
1099	{
1100	Entity ent = static_cast<Entity >(movit.getNext());
1101	ent->setVisible(!mUseViewCells);
1102	}
1103
1104	return true;
1105	}
1106	if (key == "ShowViewCells")
1107	{
1108	// only use this option if view cells are available
1109	if (mViewCellsLoaded)
1110	{
1111	mShowViewCells = static_cast<const bool >(val);
1112	// if we decide use view cells
1113	// all objects are set to invisible per default
1114	VisualizeViewCells(mShowViewCells);
1115	}
1116
1117	return true;
1118	}
1119	if (key == "NormalExecution")
1120	{
1121	mNormalExecution = static_cast<const bool >(val);
1122	return true;
1123	}
1124	if (key == "ShowTerrain")
1125	{
1126	mShowTerrain = static_cast<const bool >(val);
1127	return true;
1128	}
1129	if (key == "UseVisibilityFilter")
1130	{
1131	mUseVisibilityFilter = static_cast<const bool >(val);
1132
1133	// set null => recomputation of the pvs
1134	mElementaryViewCell = NULL;
1135
1136	return true;
1137	}
1138	if (key == "UseVisibilityQueries")
1139	{
1140	mUseVisibilityQueries = static_cast<const bool >(val);
1141
1142	return true;
1143	}
1144	if (key == "UseFromPointQueries")
1145	{
1146	mUseFromPointQueries = static_cast<const bool >(val);
1147
1148	return true;
1149	}
1150	if (key == "QueryMode")
1151	{
1152	mQueryMode = static_cast<const int >(val);
1153
1154	return true;
1155	}
1156	if (key == "ResetMaterialForQueries")
1157	{
1158	mResetMaterialForQueries = static_cast<const bool >(val);
1159	}
1160	if (key == "UseFromPointQueries")
1161	{
1162	mUseFromPointQueries = static_cast<const bool >(val);
1163	return true;
1164	}
1165
1166	return VisibilityOptionsManager(mVisibilityManager, mHierarchyInterface).
1167	setOption(key, val) \|\| TerrainSceneManager::setOption(key, val);
1168	}
1169	//-----------------------------------------------------------------------
1170	bool OcclusionCullingSceneManager::getOption(const String &key, void *val)
1171	{
1172	if (key == "NumHierarchyNodes")
1173	{
1174	* static_cast<unsigned int *>(val) = (unsigned int)mNumOctants;
1175	return true;
1176	}
1177	if (key == "VisibilityManager")
1178	{
1179	* static_cast<GtpVisibility::VisibilityManager **>(val) = mVisibilityManager;
1180	return true;
1181	}
1182	if (key == "HierarchyInterface")
1183	{
1184	* static_cast<PlatformHierarchyInterface **>(val) = mHierarchyInterface;
1185	return true;
1186	}
1187	if (key == "ShowTerrain")
1188	{
1189	* static_cast<bool *>(val) = mShowTerrain;
1190	return true;
1191	}
1192	if (key == "UseDepthPass")
1193	{
1194	* static_cast<bool *>(val) = mUseDepthPass;
1195	return true;
1196	}
1197	if (key == "FlushQueue")
1198	{
1199	* static_cast<bool *>(val) = mDeleteQueueAfterRendering;
1200	return true;
1201	}
1202	if (key == "NormalExecution")
1203	{
1204	* static_cast<bool *>(val) = mNormalExecution;
1205	return true;
1206	}
1207	if (key == "Algorithm")
1208	{
1209	GtpVisibility::VisibilityEnvironment::CullingManagerType algorithm =
1210	mVisibilityManager->GetCullingManagerType();
1211
1212	* static_cast<unsigned int *>(val) = (unsigned int)algorithm;
1213
1214	return true;
1215	}
1216
1217	if (key == "VisibleObjects")
1218	{
1219	if (mNormalExecution)
1220	return false;
1221
1222	const bool fromPoint = false;
1223	const bool nodeVisibility = true;
1224
1225	* static_cast<unsigned int *>(val) =
1226	(unsigned int)QueryVisibleObjectsExact(mCameraInProgress,
1227	mCurrentViewport,
1228	fromPoint,
1229	nodeVisibility);
1230	return true;
1231	}
1232
1233	return VisibilityOptionsManager(mVisibilityManager, mHierarchyInterface).
1234	getOption(key, val) && TerrainSceneManager::getOption(key, val);
1235	}
1236	//-----------------------------------------------------------------------
1237	bool OcclusionCullingSceneManager::getOptionValues(const String & key,
1238	StringVector &refValueList)
1239	{
1240	return TerrainSceneManager::getOptionValues( key, refValueList);
1241	}
1242	//-----------------------------------------------------------------------
1243	bool OcclusionCullingSceneManager::getOptionKeys(StringVector & refKeys)
1244	{
1245	return VisibilityOptionsManager(mVisibilityManager, mHierarchyInterface).
1246	getOptionKeys(refKeys) \|\| TerrainSceneManager::getOptionKeys(refKeys);
1247	}
1248	//-----------------------------------------------------------------------
1249	void OcclusionCullingSceneManager::setVisibilityManager(GtpVisibility::
1250	VisibilityManager *visManager)
1251	{
1252	mVisibilityManager = visManager;
1253	}
1254	//-----------------------------------------------------------------------
1255	GtpVisibility::VisibilityManager *OcclusionCullingSceneManager::getVisibilityManager( void )
1256	{
1257	return mVisibilityManager;
1258	}
1259	//-----------------------------------------------------------------------
1260	void OcclusionCullingSceneManager::WriteLog()
1261	{
1262	std::stringstream d;
1263
1264	d << "Depth pass: " << StringConverter::toString(mUseDepthPass) << ", "
1265	<< "Delay transparents: " << StringConverter::toString(mDelayRenderTransparents) << ", "
1266	<< "Use optimization: " << StringConverter::toString(mHierarchyInterface->GetTestGeometryForVisibleLeaves()) << ", "
1267	<< "Algorithm type: " << mVisibilityManager->GetCullingManagerType() << ", "
1268	<< "Hierarchy nodes: " << mNumOctants << ", "
1269	<< "Traversed nodes: " << mHierarchyInterface->GetNumTraversedNodes() << ", "
1270	<< "Rendered nodes: " << mHierarchyInterface->GetNumRenderedNodes() << ", "
1271	<< "Query culled nodes: " << mVisibilityManager->GetCullingManager()->GetNumQueryCulledNodes() << ", "
1272	<< "Frustum culled nodes: " << mVisibilityManager->GetCullingManager()->GetNumFrustumCulledNodes() << ", "
1273	<< "Queries issued: " << mVisibilityManager->GetCullingManager()->GetNumQueriesIssued() << ", "
1274	<< "Found objects: " << (int)mVisible.size() << "\n";
1275
1276	LogManager::getSingleton().logMessage(d.str());
1277	}
1278	//-----------------------------------------------------------------------
1279	void OcclusionCullingSceneManager::renderBasicQueueGroupObjects(RenderQueueGroup* pGroup,
1280	QueuedRenderableCollection::OrganisationMode om)
1281	{
1282	if (mNormalExecution)
1283	{
1284	return TerrainSceneManager::renderBasicQueueGroupObjects(pGroup, om);
1285	}
1286
1287	// Basic render loop
1288	// Iterate through priorities
1289	RenderQueueGroup::PriorityMapIterator groupIt = pGroup->getIterator();
1290
1291	while (groupIt.hasMoreElements())
1292	{
1293	RenderPriorityGroup* pPriorityGrp = groupIt.getNext();
1294
1295	// Sort the queue first
1296	pPriorityGrp->sort(mCameraInProgress);
1297
1298	// Do solids
1299	renderObjects(pPriorityGrp->getSolidsBasic(), om, true);
1300
1301	// for correct rendering, transparents must be rendered
1302	// after hierarchical culling => don't render them now
1303
1304	if (!mSkipTransparents)
1305	{
1306	// Do transparents (always descending)
1307	renderObjects(pPriorityGrp->getTransparents(),
1308	QueuedRenderableCollection::OM_SORT_DESCENDING, true);
1309	}
1310	} // for each priority
1311	}
1312	//-----------------------------------------------------------------------
1313	bool OcclusionCullingSceneManager::validatePassForRendering(Pass* pass)
1314	{
1315	if (mNormalExecution)
1316	{
1317	return TerrainSceneManager::validatePassForRendering(pass);
1318	}
1319
1320	// skip all but first pass if we are doing the depth pass
1321	if ((mIsDepthPassPhase \|\| mIsItemBufferPhase) &&
1322	(pass->getIndex() > 0))
1323	{
1324	return false;
1325	}
1326	// all but first pass
1327	/*else if ((!mIsDepthPassPhase \|\| mIsItemBufferPhase) && (pass->getIndex() != 0))
1328	{
1329	return false;
1330	}*/
1331
1332	return SceneManager::validatePassForRendering(pass);
1333	}
1334	//-----------------------------------------------------------------------
1335	void OcclusionCullingSceneManager::_renderQueueGroupObjects(RenderQueueGroup* pGroup,
1336	QueuedRenderableCollection::OrganisationMode om)
1337	{
1338	if (mNormalExecution \|\| !mIsItemBufferPhase)
1339	{
1340	TerrainSceneManager::_renderQueueGroupObjects(pGroup, om);
1341	return;
1342	}
1343
1344	#ifdef ITEM_BUFFER
1345
1346	///////////////////
1347	//-- item buffer: render objects using false colors
1348
1349	// Iterate through priorities
1350	RenderQueueGroup::PriorityMapIterator groupIt = pGroup->getIterator();
1351
1352	while (groupIt.hasMoreElements())
1353	{
1354	RenderItemBuffer(groupIt.getNext());
1355	}
1356	#endif // ITEM_BUFFER
1357	}
1358	#ifdef ITEM_BUFFER
1359	//-----------------------------------------------------------------------
1360	void OcclusionCullingSceneManager::RenderItemBuffer(RenderPriorityGroup* pGroup)
1361	{
1362	// Do solids
1363	QueuedRenderableCollection solidObjs = pGroup->getSolidsBasic();//msz
1364
1365	// ----- SOLIDS LOOP -----
1366	RenderPriorityGroup::SolidRenderablePassMap::const_iterator ipass, ipassend;
1367	ipassend = solidObjs.end();
1368
1369	for (ipass = solidObjs.begin(); ipass != ipassend; ++ipass)
1370	{
1371	// Fast bypass if this group is now empty
1372	if (ipass->second->empty())
1373	continue;
1374
1375	// Render only first pass of renderable as false color
1376	if (ipass->first->getIndex() > 0)
1377	continue;
1378
1379	RenderPriorityGroup::RenderableList* rendList = ipass->second;
1380
1381	RenderPriorityGroup::RenderableList::const_iterator irend, irendend;
1382	irendend = rendList->end();
1383
1384	for (irend = rendList->begin(); irend != irendend; ++irend)
1385	{
1386	if (0)
1387	{
1388	std::stringstream d; d << "itembuffer, pass name: " <<
1389	ipass->first->getParent()->getParent()->getName();
1390
1391	LogManager::getSingleton().logMessage(d.str());
1392	}
1393
1394	RenderSingleObjectForItemBuffer(*irend, ipass->first);
1395	}
1396	}
1397
1398	///////////
1399	//-- TRANSPARENT LOOP: must be handled differently from solids
1400
1401	// transparents are treated either as solids or completely discarded
1402	if (mRenderTransparentsForItemBuffer)
1403	{
1404	QueuedRenderableCollection transpObjs = pGroup->getTransparents(); //msz
1405	RenderPriorityGroup::TransparentRenderablePassList::const_iterator
1406	itrans, itransend;
1407
1408	itransend = transpObjs.end();
1409	for (itrans = transpObjs.begin(); itrans != itransend; ++itrans)
1410	{
1411	// like for solids, render only first pass
1412	if (itrans->pass->getIndex() == 0)
1413	{
1414	RenderSingleObjectForItemBuffer(itrans->renderable, itrans->pass);
1415	}
1416	}
1417	}
1418	}
1419	//-----------------------------------------------------------------------
1420	void OcclusionCullingSceneManager::RenderSingleObjectForItemBuffer(Renderable rend, Pass pass)
1421	{
1422	static LightList nullLightList;
1423
1424	int col[4];
1425
1426	// -- create color code out of object id
1427	col[0] = (rend->getId() >> 16) & 255;
1428	col[1] = (rend->getId() >> 8) & 255;
1429	col[2] = rend->getId() & 255;
1430	// col[3] = 255;
1431
1432	//mDestRenderSystem->setColour(col[0], col[1], col[2], col[3]);
1433
1434	mItemBufferPass->setAmbient(ColourValue(col[0] / 255.0f,
1435	col[1] / 255.0f,
1436	col[2] / 255.0f, 1));
1437
1438	// set vertex program of current pass
1439	if (mExecuteVertexProgramForAllPasses && pass->hasVertexProgram())
1440	{
1441	mItemBufferPass->setVertexProgram(pass->getVertexProgramName());
1442
1443	if (mItemBufferPass->hasVertexProgram())
1444	{
1445	const GpuProgramPtr& prg = mItemBufferPass->getVertexProgram();
1446	// Load this program if not done already
1447	if (!prg->isLoaded())
1448	prg->load();
1449	// Copy params
1450	mItemBufferPass->setVertexProgramParameters(pass->getVertexProgramParameters());
1451	}
1452	}
1453	else if (mItemBufferPass->hasVertexProgram())
1454	{
1455	mItemBufferPass->setVertexProgram("");
1456	}
1457
1458	const Pass *usedPass = _setPass(mItemBufferPass);
1459
1460
1461	// render a single object, this will set up auto params if required
1462	renderSingleObject(rend, usedPass, false, &nullLightList);
1463	}
1464	#endif // ITEM_BUFFER
1465	//-----------------------------------------------------------------------
1466	GtpVisibility::VisibilityManager *OcclusionCullingSceneManager::GetVisibilityManager()
1467	{
1468	return mVisibilityManager;
1469	}
1470	//-----------------------------------------------------------------------
1471	void OcclusionCullingSceneManager::InitVisibilityCulling(Camera *cam)
1472	{
1473	// reset culling manager stats
1474	mVisibilityManager->GetCullingManager()->InitFrame(mVisualizeCulledNodes);
1475
1476	// set depth pass flag before rendering
1477	mIsDepthPassPhase = mUseDepthPass;
1478
1479	// indicates that we use hierarchical culling from now on
1480	mIsHierarchicalCulling = true;
1481
1482	// item buffer needs full ambient lighting to use item colors as unique id
1483	if (mUseItemBuffer)
1484	{
1485	mIsItemBufferPhase = true;
1486	setAmbientLight(ColourValue(1,1,1,1));
1487	}
1488
1489
1490	// set passes which are stored in render queue
1491	// for rendering AFTER hierarchical culling, i.e., passes which need
1492	// a special rendering order
1493
1494	mLeavePassesInQueue = 0;
1495
1496	// if we have the depth pass or use an item buffer, we leave no passes in the queue
1497	if (!mUseDepthPass && !mUseItemBuffer)
1498	{
1499	if (mShadowTechnique == SHADOWTYPE_STENCIL_ADDITIVE)
1500	{
1501	// TODO: remove this pass because it should be processed during hierarchical culling
1502	//mLeavePassesInQueue \|= RenderPriorityGroup::SOLID_PASSES_NOSHADOW;
1503
1504	mLeavePassesInQueue \|= RenderPriorityGroup::SOLID_PASSES_DECAL;
1505	mLeavePassesInQueue \|= RenderPriorityGroup::SOLID_PASSES_DIFFUSE_SPECULAR;
1506	mLeavePassesInQueue \|= RenderPriorityGroup::TRANSPARENT_PASSES;
1507
1508	// just render ambient passes
1509	/* msz: no more IRS_AMBIENT, see OgreSceneManager.h */
1510	// mIlluminationStage = IRS_AMBIENT;
1511	//getRenderQueue()->setSplitPassesByLightingType(true);
1512	}
1513
1514	if (mShadowTechnique == SHADOWTYPE_STENCIL_MODULATIVE)
1515	{
1516	mLeavePassesInQueue \|= RenderPriorityGroup::SOLID_PASSES_NOSHADOW;
1517	mLeavePassesInQueue \|= RenderPriorityGroup::TRANSPARENT_PASSES;
1518	}
1519
1520	// transparents should be rendered after hierarchical culling to
1521	// provide front-to-back ordering
1522	if (mDelayRenderTransparents)
1523	{
1524	mLeavePassesInQueue \|= RenderPriorityGroup::TRANSPARENT_PASSES;
1525	}
1526	}
1527
1528	// skip rendering transparents during the hierarchical culling
1529	// (because they will be rendered afterwards)
1530	mSkipTransparents =
1531	(mIsDepthPassPhase \|\| (mLeavePassesInQueue & RenderPriorityGroup::TRANSPARENT_PASSES));
1532
1533	// -- initialise interface for rendering traversal of the hierarchy
1534	mHierarchyInterface->SetHierarchyRoot(mOctree);
1535
1536	// possible two cameras (one for culling, one for rendering)
1537	mHierarchyInterface->InitTraversal(cam,
1538	mCullCamera ? getCamera("CullCamera") : NULL,
1539	mLeavePassesInQueue);
1540
1541	}
1542	//-----------------------------------------------------------------------
1543	OctreeHierarchyInterface *OcclusionCullingSceneManager::GetHierarchyInterface()
1544	{
1545	return mHierarchyInterface;
1546	}
1547	//-----------------------------------------------------------------------
1548	void OcclusionCullingSceneManager::endFrame()
1549	{
1550	TerrainRenderable::ResetRenderLevelIndex();
1551	}
1552	//-----------------------------------------------------------------------
1553	Entity* OcclusionCullingSceneManager::createEntity(const String& entityName,
1554	const String& meshName)
1555	{
1556	Entity *ent = SceneManager::createEntity(entityName, meshName);
1557
1558	for (int i = 0; i < (int)ent->getNumSubEntities(); ++i)
1559	{
1560	ent->getSubEntity(i)->setId(mCurrentEntityId);
1561	}
1562
1563	// increase counter of entity id values
1564	++ mCurrentEntityId;
1565
1566	return ent;
1567	}
1568	//-----------------------------------------------------------------------
1569	void OcclusionCullingSceneManager::renderAdditiveStencilShadowedQueueGroupObjects(
1570	RenderQueueGroup* pGroup, QueuedRenderableCollection::OrganisationMode om)
1571	{
1572	if (mNormalExecution \|\| !mIsHierarchicalCulling)
1573	{
1574	// render the rest of the passes
1575	TerrainSceneManager::renderAdditiveStencilShadowedQueueGroupObjects(pGroup, om);
1576	return;
1577	}
1578
1579	// only render solid passes during hierarchical culling
1580	RenderQueueGroup::PriorityMapIterator groupIt = pGroup->getIterator();
1581	LightList lightList;
1582
1583	while (groupIt.hasMoreElements())
1584	{
1585	RenderPriorityGroup* pPriorityGrp = groupIt.getNext();
1586
1587	// Sort the queue first
1588	pPriorityGrp->sort(mCameraInProgress);
1589
1590	// Clear light list
1591	lightList.clear();
1592
1593	// Render all the ambient passes first, no light iteration, no lights
1594	/* msz: no more IRS_AMBIENT, see OgreSceneManager.h */
1595	// mIlluminationStage = IRS_AMBIENT;
1596
1597	OctreeSceneManager::renderObjects(pPriorityGrp->getSolidsBasic(), om, false, &lightList);
1598	// Also render any objects which have receive shadows disabled
1599	OctreeSceneManager::renderObjects(pPriorityGrp->getSolidsNoShadowReceive(), om, true);
1600	#if 0
1601	std::stringstream d;
1602	d << " solid size: " << (int)pPriorityGrp->_getSolidPasses().size()
1603	<< " solid no shadow size: " << (int)pPriorityGrp->_getSolidPassesNoShadow().size()
1604	<< "difspec size: " << (int)pPriorityGrp->_getSolidPassesDiffuseSpecular().size()
1605	<< " decal size: " << (int)pPriorityGrp->_getSolidPassesDecal().size();
1606	LogManager::getSingleton().logMessage(d.str());
1607	#endif
1608	}
1609	}
1610	//-----------------------------------------------------------------------
1611	void OcclusionCullingSceneManager::renderModulativeStencilShadowedQueueGroupObjects(
1612	RenderQueueGroup* pGroup, QueuedRenderableCollection::OrganisationMode om)
1613	{
1614	if (mNormalExecution \|\| !mIsHierarchicalCulling)
1615	{
1616	TerrainSceneManager::renderModulativeStencilShadowedQueueGroupObjects(pGroup, om);
1617	return;
1618	}
1619
1620	// Iterate through priorities
1621	RenderQueueGroup::PriorityMapIterator groupIt = pGroup->getIterator();
1622
1623	while (groupIt.hasMoreElements())
1624	{
1625	RenderPriorityGroup* pPriorityGrp = groupIt.getNext();
1626
1627	// Sort the queue first
1628	pPriorityGrp->sort(mCameraInProgress);
1629	// Do (shadowable) solids
1630	OctreeSceneManager::renderObjects(pPriorityGrp->getSolidsBasic(), om, true);
1631	}
1632	}
1633	//-------------------------------------------------------------------------
1634	void OcclusionCullingSceneManager::SetObjectsVisible(const bool visible)
1635	{
1636	GtpVisibilityPreprocessor::ObjectContainer::iterator it, it_end = mObjects.end();
1637
1638	for (it = mObjects.begin(); it != it_end; ++ it)
1639	{
1640	GtpVisibilityPreprocessor::Intersectable entry = it;
1641
1642	SetObjectVisible(entry, visible);
1643	}
1644	}
1645	//-----------------------------------------------------------------------
1646	bool OcclusionCullingSceneManager::LoadViewCells(const String &filename)
1647	{
1648	// no filename specified
1649	if (filename == "")
1650	return false;
1651
1652	// view cells already loaded
1653	if (mViewCellsLoaded)
1654	return true;
1655
1656	// converter between view cell ids and Ogre entites
1657	OctreeBoundingBoxConverter bconverter(this);
1658
1659	// load the view cells assigning the found objects to the pvss
1660	const bool finalizeViewCells = false;
1661
1662	// load the view cells assigning the found objects to the pvss
1663	mViewCellsManager =
1664	GtpVisibilityPreprocessor::ViewCellsManager::
1665	LoadViewCells(filename, mObjects, false, &bconverter);
1666
1667	LogManager::getSingleton().logMessage("****** view cells loaded *******");
1668
1669	// objects are set to invisible initially
1670	SetObjectsVisible(false);
1671
1672	if (finalizeViewCells)
1673	{
1674	CreateViewCellsGeometry();
1675	}
1676
1677	return (mViewCellsManager != NULL);
1678	}
1679	//-------------------------------------------------------------------------
1680	void OcclusionCullingSceneManager::ApplyViewCellPvs(GtpVisibilityPreprocessor::ViewCell *vc,
1681	const bool load)
1682	{
1683	// NOTE: should not encounter NULL view cell,
1684	// rather apply view cell representing unbounded space then
1685	if (!vc)
1686	{
1687	LogManager::getSingleton().logMessage("error: should not come here");
1688	// question: if no view cell, set everything visible?
1689	//SetObjectsVisible(true);
1690	SetObjectsVisible(false);
1691	return;
1692	}
1693
1694	////////////
1695	//-- set PVS of view cell to visible
1696
1697	//std::stringstream d; d << "appying new view cell pvs: " << vc->GetPvs().GetSize();
1698	//LogManager::getSingleton().logMessage(d.str());
1699
1700	GtpVisibilityPreprocessor::ObjectPvsIterator pit = vc->GetPvs().GetIterator();
1701
1702	while (pit.HasMoreEntries())
1703	{
1704	GtpVisibilityPreprocessor::Intersectable *obj = pit.Next();
1705
1706	// no associated geometry found
1707	if (!obj) continue;
1708
1709	SetObjectVisible(obj, load);
1710	}
1711	}
1712	//-------------------------------------------------------------------------
1713	void OcclusionCullingSceneManager::UpdatePvs(Camera *cam)
1714	{
1715	if (!(mViewCellsLoaded && mUseViewCells))
1716	return;
1717
1718	const GtpVisibilityPreprocessor::Vector3 viewPoint =
1719	OgreTypeConverter::ConvertFromOgre(cam->getDerivedPosition());
1720
1721	//std::stringstream d; d << "vp: " << viewPoint;
1722	//LogManager::getSingleton().logMessage(d.str());
1723
1724	GtpVisibilityPreprocessor::ViewCell *newElementary =
1725	mViewCellsManager->GetViewCell(viewPoint);
1726
1727	// elementary view cell did not change => don't change pvs
1728	if (mElementaryViewCell == newElementary)
1729	return;
1730
1731	mElementaryViewCell = newElementary;
1732
1733
1734	//////////////
1735	//-- unload old pvs
1736
1737	ApplyViewCellPvs(mCurrentViewCell, false);
1738
1739	// the new view cell
1740	GtpVisibilityPreprocessor::ViewCell *viewCell;
1741
1742	if (mUseVisibilityFilter)
1743	{
1744	////////////
1745	//-- compute new filtered cell
1746
1747	GtpVisibilityPreprocessor::PrVs prvs;
1748	mViewCellsManager->GetPrVS(viewPoint, prvs, 5);
1749	viewCell = prvs.mViewCell;
1750	}
1751	else
1752	{
1753	viewCell = newElementary;
1754	}
1755
1756	///////////////
1757	//-- load new pvs
1758
1759	ApplyViewCellPvs(viewCell, true);
1760
1761	if (viewCell)
1762	{
1763	// store current view cell
1764	mCurrentViewCell->SetPvs(viewCell->GetPvs());
1765	mCurrentViewCell->SetMesh(viewCell->GetMesh());
1766	mCurrentViewCell->SetId(viewCell->GetId());
1767
1768	// delete merge tree of filtered view cell
1769	if (mUseVisibilityFilter)
1770	mViewCellsManager->DeleteLocalMergeTree(viewCell);
1771	}
1772	}
1773	//-------------------------------------------------------------------------
1774	void OcclusionCullingSceneManager::CreateViewCellsGeometry()
1775	{
1776	//LogManager::getSingleton().logMessage("creating view cells geometry");
1777	if (mViewCellsGeometryLoaded) return;
1778
1779	GtpVisibilityPreprocessor::ViewCellContainer viewCells =
1780	mViewCellsManager->GetViewCells();
1781
1782	GtpVisibilityPreprocessor::ViewCellContainer::const_iterator it, it_end = viewCells.end();
1783	for (it = viewCells.begin(); it != it_end; ++ it)
1784	{
1785	GtpVisibilityPreprocessor::ViewCell viewCell = it;
1786
1787	ManualObject *manual =
1788	OgreTypeConverter::ConvertToOgre(viewCell->GetMesh(), this);
1789
1790	if (manual)
1791	{
1792	mViewCellsGeometry[viewCell->GetId()] = manual;
1793
1794	// attach to scene node
1795	getRootSceneNode()->createChildSceneNode()->attachObject(manual);
1796	manual->setQueryFlags(0); // returned by no query
1797
1798	// initialy set to invisible
1799	manual->setVisible(false);
1800	}
1801	}
1802
1803	mViewCellsGeometryLoaded = true;
1804	}
1805	//-------------------------------------------------------------------------
1806	void OcclusionCullingSceneManager::VisualizeViewCells(const bool visualize)
1807	{
1808	MovableMap::const_iterator mit, mit_end = mViewCellsGeometry.end();
1809
1810	for (mit = mViewCellsGeometry.begin(); mit != mit_end; ++ mit)
1811	{
1812	if ((*mit).second)
1813	(*mit).second->setVisible(visualize);
1814	}
1815	}
1816	#if 0
1817	//-------------------------------------------------------------------------
1818	void OcclusionCullingSceneManager::TestVisible(SceneNode *node)
1819	{
1820	// first test for scene node, then for octant (part of the hierarchy)
1821	if (!node->mVisibleChildren)
1822	{
1823	node->setVisible(false);
1824	}
1825
1826	node->getOctant()->mVisibleChildren --;
1827	}
1828	//-------------------------------------------------------------------------
1829	void OcclusionCullingSceneManager::TestVisible(Octree *octant)
1830	{
1831	// first test for scene node, then for octant (part of the hierarchy)
1832	if (!octant->mVisibleChildren)
1833	{
1834	octant->setVisible(false);
1835	}
1836	}
1837
1838	//-------------------------------------------------------------------------
1839	void OcclusionCullingSceneManager::UpdateVisibility(Entity *ent)
1840	{
1841	if (!ent->isVisible())
1842	{
1843	bool visible = TestVisible(ent->getParentNode());
1844
1845	if (!visible)
1846	visible = TestVisible(octant->getParentNode());
1847
1848	if (!visible)
1849	mHierarchyInterface->pullupVisibility();
1850	}
1851	}
1852	#endif
1853	// splits strings containing multiple file names
1854	static int SplitFilenames(const std::string str,
1855	std::vector<std::string> &filenames)
1856	{
1857	int pos = 0;
1858
1859	while(1)
1860	{
1861	int npos = (int)str.find(';', pos);
1862
1863	if (npos < 0 \|\| npos - pos < 1)
1864	break;
1865	filenames.push_back(std::string(str, pos, npos - pos));
1866	pos = npos + 1;
1867	}
1868
1869	filenames.push_back(std::string(str, pos, str.size() - pos));
1870	return (int)filenames.size();
1871	}
1872	//-----------------------------------------------------------------------
1873	bool OcclusionCullingSceneManager::LoadScene(const String &filename,
1874	const String &viewCellsFilename)
1875	{
1876	using namespace std;
1877
1878	// use leaf nodes of the original spatial hierarchy as occludees
1879	vector<string> filenames;
1880	const int files = SplitFilenames(filename, filenames);
1881
1882	stringstream d;
1883	d << "number of input files: " << files << "\n";
1884	LogManager::getSingleton().logMessage(d.str());
1885
1886	bool result = false;
1887	vector<string>::const_iterator fit, fit_end = filenames.end();
1888	int i = 0;
1889
1890	if (filename == "terrain" \|\| filename == "")
1891	{
1892	LogManager::getSingleton().logMessage("not loading scene");
1893
1894	// terrain hack
1895	return false;
1896	}
1897
1898	for (fit = filenames.begin(); fit != fit_end; ++ fit, ++ i)
1899	{
1900	const string fn = *fit;
1901
1902	if (strstr(fn.c_str(), ".obj"))
1903	{
1904	// load iv files
1905	if (!LoadSceneObj(filename, viewCellsFilename, getRootSceneNode()))
1906	{
1907	LogManager::getSingleton().logMessage("error loading file");
1908	return false;
1909	}
1910	}
1911	else if (strstr(fn.c_str(), ".iv") \|\| strstr(fn.c_str(), ".wrl"))
1912	{
1913	// load iv files
1914	if (!LoadSceneIV(fn, getRootSceneNode(), i))
1915	{
1916	// terrain hack
1917	LogManager::getSingleton().logMessage("error loading file");
1918	}
1919	}
1920
1921	// at least one piece of geometry loaded
1922	result = true;
1923	}
1924
1925	return result;
1926	}
1927	//-----------------------------------------------------------------------
1928	bool OcclusionCullingSceneManager::LoadSceneIV(const String &filename,
1929	SceneNode *root,
1930	const int index)
1931	{
1932	IVReader ivReader;
1933
1934	Timer *timer = PlatformManager::getSingleton().createTimer();
1935	timer->reset();
1936
1937	if (1)
1938	{
1939	std::string logFilename = "IVLog" + Ogre::StringConverter().toString(index) + ".log";
1940
1941	Log *log = LogManager::getSingleton().createLog(logFilename);
1942	ivReader.setLog(log);
1943	}
1944
1945	if (ivReader.loadFile(filename.c_str()))
1946	{
1947	SceneNode *node = root->createChildSceneNode("IVSceneNode" + index);
1948
1949	ivReader.buildTree(this, node);
1950	ivReader.collapse();
1951
1952	std::stringstream d;
1953	d << "loaded " << filename << " in " << timer->getMilliseconds() * 1e-3 << " secs";
1954	LogManager::getSingleton().logMessage(d.str());
1955
1956	PlatformManager::getSingleton().destroyTimer(timer);
1957
1958	/*if (USE_STATIC_GEOMETRY)
1959	{
1960	//-- bake into static geometry
1961	BakeSceneIntoStaticGeometry("staticVienna", "Vienna");
1962	}*/
1963
1964	return true;
1965	}
1966
1967	return false;
1968	}
1969	//-----------------------------------------------------------------------
1970	void OcclusionCullingSceneManager::RenderHierarchicalCulling(const bool fillRenderQueue)
1971	{
1972	// create material for depth pass
1973	InitDepthPass();
1974
1975	////////////////////
1976	//-- hierarchical culling
1977
1978	// set all necessary parameters for
1979	// hierarchical visibility culling and rendering
1980	InitVisibilityCulling(mCameraInProgress);
1981
1982
1983	/**
1984	* the hierarchical culling algorithm
1985	* for depth pass: we just find objects and update depth buffer
1986	* for "delayed" rendering: we render some passes afterwards
1987	* e.g., transparents, because they need front-to-back sorting
1988	**/
1989
1990	mVisibilityManager->ApplyVisibilityCulling();
1991
1992	// delete remaining renderables from queue:
1993	// all which are not in mLeavePassesInQueue)
1994	_deleteRenderedQueueGroups(mLeavePassesInQueue);
1995
1996	/////////////
1997	//-- reset parameters needed for special rendering
1998
1999	mIsDepthPassPhase = false;
2000	mIsItemBufferPhase = false;
2001	mSkipTransparents = false;
2002	mIsHierarchicalCulling = false;
2003	mLeavePassesInQueue = 0;
2004
2005	if (fillRenderQueue)
2006	{
2007	// the shaded geometry is rendered in a second pass
2008	// add visible nodes found by the visibility culling algorithm
2009	NodeList::const_iterator it, it_end = mVisible.end();
2010	for (it = mVisible.begin(); it != it_end; ++ it)
2011	{
2012	(*it)->_addToRenderQueue(mCameraInProgress, getRenderQueue(), false);
2013	}
2014	}
2015	}
2016	//-----------------------------------------------------------------------
2017	bool OcclusionCullingSceneManager::LoadSceneObj(const String &filename,
2018	const String &viewCellsFile,
2019	SceneNode *root)
2020	{
2021	Timer *timer = PlatformManager::getSingleton().createTimer();
2022	timer->reset();
2023
2024	if (!mObjReader->LoadFile(filename.c_str(), viewCellsFile, root))
2025	{
2026	PlatformManager::getSingleton().destroyTimer(timer);
2027	return false;
2028	}
2029
2030	std::stringstream d;
2031	d << "loaded " << filename << " in " << timer->getMilliseconds() * 1e-3 << " secs";
2032	LogManager::getSingleton().logMessage(d.str());
2033
2034	PlatformManager::getSingleton().destroyTimer(timer);
2035
2036	return true;
2037	}
2038
2039	//-----------------------------------------------------------------------
2040	void OcclusionCullingSceneManager::_renderScene(Camera* camera,
2041	Viewport* vp,
2042	bool includeOverlays)
2043	{
2044	if (mNormalExecution)
2045	{
2046	TerrainSceneManager::_renderScene(camera, vp, includeOverlays);
2047	return;
2048	}
2049
2050	Root::getSingleton()._setCurrentSceneManager(this);
2051	mActiveQueuedRenderableVisitor->targetSceneMgr = this;
2052
2053	if (isShadowTechniqueInUse())
2054	{
2055	// Prepare shadow materials
2056	initShadowVolumeMaterials();
2057	}
2058
2059	// Perform a quick pre-check to see whether we should override far distance
2060	// When using stencil volumes we have to use infinite far distance
2061	// to prevent dark caps getting clipped
2062	if (isShadowTechniqueStencilBased() &&
2063	camera->getProjectionType() == PT_PERSPECTIVE &&
2064	camera->getFarClipDistance() != 0 &&
2065	mDestRenderSystem->getCapabilities()->hasCapability(RSC_INFINITE_FAR_PLANE) &&
2066	mShadowUseInfiniteFarPlane)
2067	{
2068	// infinite far distance
2069	camera->setFarClipDistance(0);
2070	}
2071
2072	mCameraInProgress = camera;
2073
2074
2075	// Update controllers
2076	ControllerManager::getSingleton().updateAllControllers();
2077
2078	// Update the scene, only do this once per frame
2079	unsigned long thisFrameNumber = Root::getSingleton().getCurrentFrameNumber();
2080	if (thisFrameNumber != mLastFrameNumber)
2081	{
2082	// Update animations
2083	_applySceneAnimations();
2084	mLastFrameNumber = thisFrameNumber;
2085	}
2086
2087	// Update scene graph for this camera (can happen multiple times per frame)
2088	_updateSceneGraph(camera);
2089
2090	// Auto-track nodes
2091	AutoTrackingSceneNodes::iterator atsni, atsniend;
2092	atsniend = mAutoTrackingSceneNodes.end();
2093	for (atsni = mAutoTrackingSceneNodes.begin(); atsni != atsniend; ++atsni)
2094	{
2095	(*atsni)->_autoTrack();
2096	}
2097	// Auto-track camera if required
2098	camera->_autoTrack();
2099
2100
2101	// Are we using any shadows at all?
2102	if (isShadowTechniqueInUse() &&
2103	mIlluminationStage != IRS_RENDER_TO_TEXTURE &&
2104	vp->getShadowsEnabled() &&
2105	mFindVisibleObjects)
2106	{
2107	// Locate any lights which could be affecting the frustum
2108	findLightsAffectingFrustum(camera);
2109	if (isShadowTechniqueTextureBased())
2110	{
2111	// *******
2112	// WARNING
2113	// *******
2114	// This call will result in re-entrant calls to this method
2115	// therefore anything which comes before this is NOT
2116	// guaranteed persistent. Make sure that anything which
2117	// MUST be specific to this camera / target is done
2118	// AFTER THIS POINT
2119	prepareShadowTextures(camera, vp);
2120	// reset the cameras because of the re-entrant call
2121	mCameraInProgress = camera;
2122	}
2123	}
2124
2125	// Invert vertex winding?
2126	if (camera->isReflected())
2127	{
2128	mDestRenderSystem->setInvertVertexWinding(true);
2129	}
2130	else
2131	{
2132	mDestRenderSystem->setInvertVertexWinding(false);
2133	}
2134
2135	// Tell params about viewport
2136	mAutoParamDataSource.setCurrentViewport(vp);
2137	// Set the viewport
2138	setViewport(vp);
2139
2140	// Tell params about camera
2141	mAutoParamDataSource.setCurrentCamera(camera);
2142	// Set autoparams for finite dir light extrusion
2143	mAutoParamDataSource.setShadowDirLightExtrusionDistance(mShadowDirLightExtrudeDist);
2144
2145	// Tell params about current ambient light
2146	mAutoParamDataSource.setAmbientLightColour(mAmbientLight);
2147	// Tell rendersystem
2148	mDestRenderSystem->setAmbientLight(mAmbientLight.r, mAmbientLight.g, mAmbientLight.b);
2149
2150	// Tell params about render target
2151	mAutoParamDataSource.setCurrentRenderTarget(vp->getTarget());
2152
2153
2154	// Set camera window clipping planes (if any)
2155	if (mDestRenderSystem->getCapabilities()->hasCapability(RSC_USER_CLIP_PLANES))
2156	{
2157	if (camera->isWindowSet())
2158	{
2159	const std::vector<Plane>& planeList =
2160	camera->getWindowPlanes();
2161	for (ushort i = 0; i < 4; ++i)
2162	{
2163	mDestRenderSystem->enableClipPlane(i, true);
2164	mDestRenderSystem->setClipPlane(i, planeList[i]);
2165	}
2166	}
2167	else
2168	{
2169	for (ushort i = 0; i < 4; ++i)
2170	{
2171	mDestRenderSystem->enableClipPlane(i, false);
2172	}
2173	}
2174	}
2175
2176	// Prepare render queue for receiving new objects
2177	//prepareRenderQueue();
2178
2179	mDestRenderSystem->_beginGeometryCount();
2180	// Begin the frame
2181	mDestRenderSystem->_beginFrame();
2182
2183	// Set rasterisation mode
2184	mDestRenderSystem->_setPolygonMode(camera->getPolygonMode());
2185
2186	// Set initial camera state
2187	mDestRenderSystem->_setProjectionMatrix(mCameraInProgress->getProjectionMatrixRS());
2188	mDestRenderSystem->_setViewMatrix(mCameraInProgress->getViewMatrix(true));
2189
2190	// Prepare render queue for receiving new objects
2191	#ifdef GAMETOOLS_ILLUMINATION_MODULE
2192	if (mFindVisibleObjects)
2193	prepareRenderQueue();
2194	#else
2195	prepareRenderQueue();
2196	#endif
2197
2198	if (mFindVisibleObjects)
2199	{
2200	// Parse the scene and tag visibles
2201	myFindVisibleObjects(camera,
2202	mIlluminationStage == IRS_RENDER_TO_TEXTURE? true : false);
2203	}
2204	// Add overlays, if viewport deems it
2205	if (vp->getOverlaysEnabled() && mIlluminationStage != IRS_RENDER_TO_TEXTURE)
2206	{
2207	OverlayManager::getSingleton()._queueOverlaysForRendering(camera, getRenderQueue(), vp);
2208	}
2209	// Queue skies, if viewport seems it
2210	if (vp->getSkiesEnabled() && mFindVisibleObjects && mIlluminationStage != IRS_RENDER_TO_TEXTURE)
2211	{
2212	_queueSkiesForRendering(camera);
2213	}
2214
2215	// Render scene content
2216	_renderVisibleObjects();
2217
2218	// End frame
2219	mDestRenderSystem->_endFrame();
2220
2221	// Notify camera or vis faces
2222	camera->_notifyRenderedFaces(mDestRenderSystem->_getFaceCount());
2223	}
2224	//-----------------------------------------------------------------------
2225	int OcclusionCullingSceneManager::QueryVisibleObjectsExact(Camera *camera,
2226	Viewport* vp,
2227	const bool fromPoint,
2228	const bool nodeVisibility)
2229	{
2230	const int itemBufferMode = 0;
2231	const bool relativeVisibility = false;
2232	const bool approximateVisibility = false;
2233
2234	int queryModes = 0;
2235
2236	if (nodeVisibility)
2237	queryModes \|= GtpVisibility::QueryManager::NODE_VISIBILITY;
2238	else
2239	queryModes \|= GtpVisibility::QueryManager::GEOMETRY_VISIBILITY;
2240
2241	OcclusionQueriesQueryManager *queryManager =
2242	new OcclusionQueriesQueryManager(mHierarchyInterface,
2243	vp,
2244	queryModes,
2245	itemBufferMode);
2246
2247	mVisibilityManager->SetQueryManager(queryManager);
2248
2249	NodeInfoContainer visibleNodes;
2250	MeshInfoContainer visibleGeometry;
2251	PatchInfoContainer visiblePatches;
2252
2253	if (fromPoint)
2254	{
2255	queryManager->ComputeFromPointVisibility(camera->getDerivedPosition(),
2256	&visibleNodes,
2257	&visibleGeometry,
2258	&visiblePatches,
2259	relativeVisibility,
2260	approximateVisibility);
2261	}
2262	else
2263	{
2264	queryManager->ComputeCameraVisibility(*camera,
2265	&visibleNodes,
2266	&visibleGeometry,
2267	&visiblePatches,
2268	relativeVisibility,
2269	approximateVisibility);
2270	}
2271
2272	if (0)
2273	{
2274	std::stringstream d;
2275	d << "Query mode: " << queryModes
2276	<< " visible nodes: " << (int)visibleNodes.size()
2277	<< " visible geometry: " << (int)visibleGeometry.size();
2278
2279	LogManager::getSingleton().logMessage(d.str());
2280	}
2281
2282	///////////////////////
2283	//-- put items in render queue
2284	//////////
2285
2286	getRenderQueue()->clear();
2287
2288	//////////////////////
2289	//-- apply queries on geometry level
2290
2291	if (!nodeVisibility)
2292	{
2293	MeshInfoContainer::iterator geomIt, geomIt_end = visibleGeometry.end();
2294
2295	for (geomIt = visibleGeometry.begin(); geomIt != geomIt_end; ++geomIt)
2296	{
2297	MovableObject mo = (geomIt).GetSource();
2298
2299	// add if not 0
2300	if (!(*geomIt).GetVisiblePixels())
2301	continue;
2302
2303	mo->_notifyCurrentCamera(camera);
2304
2305	if (mo->isVisible())
2306	{
2307	mo->_updateRenderQueue(getRenderQueue());
2308	}
2309	}
2310	}
2311	else
2312	{
2313	////////////////
2314	//-- apply queries on node level
2315
2316	NodeInfoContainer::iterator nodesIt, nodesIt_end = visibleNodes.end();
2317
2318	for (nodesIt = visibleNodes.begin(); nodesIt != nodesIt_end; ++ nodesIt)
2319	{
2320	if (!(*nodesIt).GetVisiblePixels())
2321	continue;
2322
2323	Octree octree = static_cast<Octree >((*nodesIt).GetSource());
2324
2325	NodeList::iterator nIt, nIt_end = octree->mNodes.end();
2326
2327	for (nIt = octree->mNodes.begin(); nIt != nIt_end; ++ nIt)
2328	{
2329	(*nIt)->_addToRenderQueue(camera, getRenderQueue(), false);
2330	}
2331	}
2332	}
2333
2334	delete queryManager;
2335
2336	if (nodeVisibility)
2337	return (int)visibleNodes.size();
2338	else
2339	return (int)visibleGeometry.size();
2340	}
2341	//-----------------------------------------------------------------------
2342	void OcclusionCullingSceneManager::RenderDepthForQuery(Camera* camera,
2343	Viewport* vp)
2344	{
2345	Root::getSingleton()._setCurrentSceneManager(this);
2346	mActiveQueuedRenderableVisitor->targetSceneMgr = this;
2347
2348	mCameraInProgress = camera;
2349
2350	// Update scene graph for this camera (can happen multiple times per frame)
2351	_updateSceneGraph(camera);
2352
2353	// Invert vertex winding?
2354	if (camera->isReflected())
2355	{
2356	mDestRenderSystem->setInvertVertexWinding(true);
2357	}
2358	else
2359	{
2360	mDestRenderSystem->setInvertVertexWinding(false);
2361	}
2362
2363	// Tell params about viewport
2364	mAutoParamDataSource.setCurrentViewport(vp);
2365	// Set the viewport
2366	setViewport(vp);
2367
2368	// Tell params about camera
2369	mAutoParamDataSource.setCurrentCamera(camera);
2370	// Set autoparams for finite dir light extrusion
2371	mAutoParamDataSource.setShadowDirLightExtrusionDistance(mShadowDirLightExtrudeDist);
2372
2373	// Tell params about current ambient light
2374	mAutoParamDataSource.setAmbientLightColour(mAmbientLight);
2375	// Tell rendersystem
2376	mDestRenderSystem->setAmbientLight(mAmbientLight.r, mAmbientLight.g, mAmbientLight.b);
2377
2378	// Tell params about render target
2379	mAutoParamDataSource.setCurrentRenderTarget(vp->getTarget());
2380
2381
2382	// Set camera window clipping planes (if any)
2383	if (mDestRenderSystem->getCapabilities()->hasCapability(RSC_USER_CLIP_PLANES))
2384	{
2385	if (camera->isWindowSet())
2386	{
2387	const std::vector<Plane>& planeList =
2388	camera->getWindowPlanes();
2389	for (ushort i = 0; i < 4; ++i)
2390	{
2391	mDestRenderSystem->enableClipPlane(i, true);
2392	mDestRenderSystem->setClipPlane(i, planeList[i]);
2393	}
2394	}
2395	else
2396	{
2397	for (ushort i = 0; i < 4; ++i)
2398	{
2399	mDestRenderSystem->enableClipPlane(i, false);
2400	}
2401	}
2402	}
2403
2404	// Prepare render queue for receiving new objects
2405	prepareRenderQueue();
2406
2407	// Begin the frame
2408	mDestRenderSystem->_beginFrame();
2409
2410	// Set rasterisation mode
2411	mDestRenderSystem->_setPolygonMode(camera->getPolygonMode());
2412
2413	// Set initial camera state
2414	mDestRenderSystem->_setProjectionMatrix(mCameraInProgress->getProjectionMatrixRS());
2415	mDestRenderSystem->_setViewMatrix(mCameraInProgress->getViewMatrix(true));
2416
2417	//////////////
2418	//-- Render scene in order fill depth buffer
2419
2420	// don't have to fill queue, just render depth
2421	const bool fillQueue = false;
2422
2423	RenderHierarchicalCulling(fillQueue);
2424	// _renderVisibleObjects();
2425
2426	// End frame
2427	mDestRenderSystem->_endFrame();
2428	}
2429	//-----------------------------------------------------------------------
2430	const String OcclusionCullingSceneManagerFactory::FACTORY_TYPE_NAME = "OcclusionCullingSceneManager";
2431	//-----------------------------------------------------------------------
2432	void OcclusionCullingSceneManagerFactory::initMetaData(void) const
2433	{
2434	mMetaData.typeName = FACTORY_TYPE_NAME;
2435	mMetaData.description = "Scene manager organising the scene on the basis of an octree with advanced occlusion culling (TM).";
2436	mMetaData.sceneTypeMask = 0xFFFF; // support all types
2437	mMetaData.worldGeometrySupported = false;
2438	}
2439	//-----------------------------------------------------------------------
2440	SceneManager *OcclusionCullingSceneManagerFactory::createInstance(
2441	const String& instanceName)
2442	{
2443	OcclusionCullingSceneManager* tsm =
2444	new OcclusionCullingSceneManager(instanceName, visManager);
2445
2446	// Create & register default sources (one per manager)
2447	HeightmapTerrainPageSource* ps = new HeightmapTerrainPageSource();
2448	mTerrainPageSources.push_back(ps);
2449	tsm->registerPageSource("Heightmap", ps);
2450
2451	return tsm;
2452	}
2453	//-----------------------------------------------------------------------
2454	void OcclusionCullingSceneManager::AddVisibleMeshGeometryToQueue(
2455	const MeshInfoContainer &visibleGeometry,
2456	Camera *cam)
2457	{
2458	MeshInfoContainer::const_iterator geomIt, geomIt_end = visibleGeometry.end();
2459
2460	for (geomIt = visibleGeometry.begin(); geomIt != geomIt_end; ++geomIt)
2461	{
2462	MovableObject mo = (geomIt).GetSource();
2463
2464	// add if not 0
2465	if (!(*geomIt).GetVisiblePixels())
2466	continue;
2467
2468	mo->_notifyCurrentCamera(cam);
2469
2470	if (mo->isVisible())
2471	{
2472	mo->_updateRenderQueue(getRenderQueue());
2473	}
2474	}
2475	}
2476	//-----------------------------------------------------------------------
2477	void OcclusionCullingSceneManager::AddVisibleNodeGeometryToQueue(
2478	const NodeInfoContainer &visibleNodes,
2479	Camera *cam)
2480	{
2481	////////////////
2482	//-- apply queries on node level
2483
2484	NodeInfoContainer::const_iterator nodesIt, nodesIt_end = visibleNodes.end();
2485
2486	for (nodesIt = visibleNodes.begin(); nodesIt != nodesIt_end; ++ nodesIt)
2487	{
2488	if (!(*nodesIt).GetVisiblePixels())
2489	continue;
2490
2491	Octree octree = static_cast<Octree >((*nodesIt).GetSource());
2492
2493	NodeList::iterator nIt, nIt_end = octree->mNodes.end();
2494
2495	for (nIt = octree->mNodes.begin(); nIt != nIt_end; ++ nIt)
2496	{
2497	(*nIt)->_addToRenderQueue(cam, getRenderQueue(), false);
2498	}
2499	}
2500	}
2501	//-----------------------------------------------------------------------
2502	void OcclusionCullingSceneManager::_findVisibleObjects(Camera* cam,
2503	bool onlyShadowCasters)
2504	{
2505	if (mNormalExecution \|\| (!mUseVisibilityQueries == 0))
2506	{
2507	TerrainSceneManager::_findVisibleObjects(cam, onlyShadowCasters);
2508	return;
2509	}
2510
2511	// don't need shading, render only depth
2512	// note:have to disable deph write for nodes!
2513	bool savedUseDepthPass = mUseDepthPass;
2514	if (mResetMaterialForQueries) mUseDepthPass = true;
2515
2516	// lists only used for visualization
2517	getRenderQueue()->clear();
2518	mVisible.clear();
2519	mBoxes.clear();
2520
2521	const int itemBufferMode = 0;
2522	const bool relativeVisibility = false;
2523	bool approximateVisibility = false;
2524
2525	int queryModes = 0;
2526
2527	if (mQueryMode != 0)
2528	{
2529	queryModes \|= GtpVisibility::QueryManager::NODE_VISIBILITY;
2530
2531	if (mQueryMode == 2)
2532	{
2533	approximateVisibility = true;
2534	}
2535	}
2536	else
2537	{
2538	queryModes \|= GtpVisibility::QueryManager::GEOMETRY_VISIBILITY;
2539	}
2540
2541
2542	OcclusionQueriesQueryManager *queryManager =
2543	new OcclusionQueriesQueryManager(mHierarchyInterface,
2544	cam->getViewport(),
2545	//mCurrentViewport,
2546	queryModes,
2547	itemBufferMode);
2548
2549	mVisibilityManager->SetQueryManager(queryManager);
2550
2551	NodeInfoContainer visibleNodes;
2552	MeshInfoContainer visibleGeometry;
2553	PatchInfoContainer visiblePatches;
2554
2555	if (mUseFromPointQueries)
2556	{
2557	queryManager->ComputeFromPointVisibility(cam->getDerivedPosition(),
2558	&visibleNodes,
2559	&visibleGeometry,
2560	&visiblePatches,
2561	relativeVisibility,
2562	approximateVisibility);
2563	}
2564	else
2565	{
2566	queryManager->ComputeCameraVisibility(*cam,
2567	&visibleNodes,
2568	&visibleGeometry,
2569	&visiblePatches,
2570	relativeVisibility,
2571	approximateVisibility);
2572	}
2573
2574	if (0)
2575	{
2576	std::stringstream d;
2577	d << "Query mode: " << queryModes
2578	<< " visible nodes: " << (int)visibleNodes.size()
2579	<< " visible geometry: " << (int)visibleGeometry.size();
2580
2581	LogManager::getSingleton().logMessage(d.str());
2582	}
2583
2584	///////////////////////
2585	//-- put items in render queue
2586
2587	if (mQueryMode != EXACT_QUERIES)
2588	{
2589	////////////
2590	//-- apply queries on geometry level
2591
2592	AddVisibleNodeGeometryToQueue(visibleNodes, cam);
2593	}
2594	else
2595	{
2596	AddVisibleMeshGeometryToQueue(visibleGeometry, cam);
2597	}
2598
2599	// reset depth pass
2600	mUseDepthPass = savedUseDepthPass;
2601
2602	delete queryManager;
2603	}
2604
2605	//-----------------------------------------------------------------------
2606	void OcclusionCullingSceneManagerFactory::destroyInstance(SceneManager* instance)
2607	{
2608	delete instance;
2609	}
2610
2611	} // namespace Ogre

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