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source: trunk/VUT/Ogre/src/OgreVisibilityOctreeSceneManager.cpp @ 175

Revision 175, 23.9 KB checked in by mattausch, 19 years ago (diff)
added trees

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1	#include "OgreVisibilityOctreeSceneManager.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
12
13	namespace Ogre {
14
15	//-----------------------------------------------------------------------
16	VisibilityOctreeSceneManager::VisibilityOctreeSceneManager(
17	GtpVisibility::VisibilityManager *visManager)
18	:
19	mVisibilityManager(visManager),
20	mShowVisualization(false),
21	mRenderNodesForViz(false),
22	mRenderNodesContentForViz(false),
23	mVisualizeCulledNodes(false),
24	mLeavePassesInQueue(0),
25	mDelayRenderTransparents(true),
26	mUseDepthPass(false),
27	mRenderDepthPass(false),
28	mUseItemBuffer(false),
29	//mUseItemBuffer(true),
30	mRenderItemBuffer(false),
31	mCurrentEntityId(1),
32	mEnableDepthWrite(true),
33	mSkipTransparents(false),
34	mSavedShadowTechnique(SHADOWTYPE_NONE),
35	mRenderTransparentsForItemBuffer(false),
36	mExecuteVertexProgramForAllPasses(false)
37	{
38	mHierarchyInterface = new OctreeHierarchyInterface(this, mDestRenderSystem);
39
40	//mDisplayNodes = true;
41	//mShowBoundingBoxes = true;
42	//mShowBoxes = true;
43
44	// TODO: set maxdepth to reasonable value
45	mMaxDepth = 50;
46	}
47	//-----------------------------------------------------------------------
48	void VisibilityOctreeSceneManager::InitDepthPass()
49	{
50	MaterialPtr depthMat = MaterialManager::getSingleton().getByName("Visibility/DepthPass");
51
52	if (depthMat.isNull())
53	{
54	depthMat = MaterialManager::getSingleton().create(
55	"Visibility/DepthPass",
56	ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME);
57
58	mDepthPass = depthMat->getTechnique(0)->getPass(0);
59	mDepthPass->setColourWriteEnabled(false);
60	mDepthPass->setDepthWriteEnabled(true);
61	mDepthPass->setLightingEnabled(false);
62	}
63	else
64	{
65	mDepthPass = depthMat->getTechnique(0)->getPass(0);
66	}
67	}
68	//-----------------------------------------------------------------------
69	VisibilityOctreeSceneManager::~VisibilityOctreeSceneManager()
70	{
71	if (mHierarchyInterface)
72	{
73	delete mHierarchyInterface;
74	mHierarchyInterface = NULL;
75	}
76	}
77	//-----------------------------------------------------------------------
78	void VisibilityOctreeSceneManager::InitItemBufferPass()
79	{
80	MaterialPtr itemBufferMat = MaterialManager::getSingleton().
81	getByName("Visibility/ItemBufferPass");
82
83	if (itemBufferMat.isNull())
84	{
85	// Init
86	itemBufferMat = MaterialManager::getSingleton().create("Visibility/ItemBufferPass",
87	ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME);
88
89	mItemBufferPass = itemBufferMat->getTechnique(0)->getPass(0);
90	mItemBufferPass->setColourWriteEnabled(true);
91	mItemBufferPass->setDepthWriteEnabled(true);
92	mItemBufferPass->setLightingEnabled(true);
93	//mItemBufferPass->setLightingEnabled(false);
94	}
95	else
96	{
97	mItemBufferPass = itemBufferMat->getTechnique(0)->getPass(0);
98	}
99	//mItemBufferPass->setAmbient(1, 1, 0);
100	}
101	//-----------------------------------------------------------------------
102	void VisibilityOctreeSceneManager::PrepareVisualization(Camera *cam)
103	{
104	// add player camera for visualization purpose
105	try
106	{
107	Camera *c;
108	if ((c = getCamera("PlayerCam")) != NULL)
109	{
110	getRenderQueue()->addRenderable(c);
111	}
112	}
113	catch(...)
114	{
115	// ignore
116	}
117	for (BoxList::iterator it = mBoxes.begin(); it != mBoxes.end(); ++it)
118	{
119	getRenderQueue()->addRenderable(*it);
120	}
121	if (mRenderNodesForViz \|\| mRenderNodesContentForViz)
122	{
123	// change node material so it is better suited for visualization
124	MaterialPtr nodeMat = MaterialManager::getSingleton().getByName("Core/NodeMaterial");
125	nodeMat->setAmbient(1, 1, 0);
126	nodeMat->setLightingEnabled(true);
127	nodeMat->getTechnique(0)->getPass(0)->removeAllTextureUnitStates();
128
129	for (NodeList::iterator it = mVisible.begin(); it != mVisible.end(); ++it)
130	{
131	if (mRenderNodesForViz)
132	{
133	if (((it)->numAttachedObjects() > 0) && ((it)->numChildren() == 0)
134	&& (*it)->getAttachedObject(0)->getMovableType() == "Entity")
135	getRenderQueue()->addRenderable((*it));
136
137	// addbounding boxes instead of node itself
138	//(*it)->_addBoundingBoxToQueue(getRenderQueue());
139	}
140	if (mRenderNodesContentForViz)
141	{
142	(*it)->_addToRenderQueue(cam, getRenderQueue(), false);
143	}
144	}
145	}
146	}
147	//-----------------------------------------------------------------------
148	Pass VisibilityOctreeSceneManager::setPass(Pass pass)
149	{
150	// set depth fill pass if we currently do not make an aabb occlusion query
151	Pass *usedPass = (mRenderDepthPass && !mHierarchyInterface->IsBoundingBoxQuery() ?
152	mDepthPass : pass);
153
154	IlluminationRenderStage savedStage = mIlluminationStage;
155
156	// set illumination stage to NONE so no shadow material is used
157	// for depth pass or for occlusion query
158	if (mRenderDepthPass \|\| mHierarchyInterface->IsBoundingBoxQuery())
159	{
160	mIlluminationStage = IRS_NONE;
161	}
162
163	//-- set vertex program of current pass in order to set correct depth
164	if (mRenderDepthPass && mExecuteVertexProgramForAllPasses && pass->hasVertexProgram())
165	{
166	// add vertex program of current pass to depth pass
167	mDepthPass->setVertexProgram(pass->getVertexProgramName());
168
169	if (mDepthPass->hasVertexProgram())
170	{
171	const GpuProgramPtr& prg = mDepthPass->getVertexProgram();
172	// Load this program if not done already
173	if (!prg->isLoaded())
174	prg->load();
175	// Copy params
176	mDepthPass->setVertexProgramParameters(pass->getVertexProgramParameters());
177	}
178	}
179	else if (mDepthPass->hasVertexProgram())
180	{
181	mDepthPass->setVertexProgram("");
182	}
183
184	// store depth write flag to reset later
185	bool IsDepthWrite = usedPass->getDepthWriteEnabled();
186
187	// global option which enables / disables depth writes
188	if (!mEnableDepthWrite)
189	{
190	usedPass->setDepthWriteEnabled(false);
191	}
192	//else if (mIsItemBufferPass) {usedPass = mItemBufferPass;}
193
194	Pass *result = SceneManager::setPass(usedPass);
195
196	// reset depth write
197	if (!mEnableDepthWrite)
198	{
199	usedPass->setDepthWriteEnabled(IsDepthWrite);
200	}
201
202	// reset illumination stage
203	mIlluminationStage = savedStage;
204
205	return result;
206	}
207	//-----------------------------------------------------------------------
208	void VisibilityOctreeSceneManager::_findVisibleObjects(Camera* cam, bool onlyShadowCasters)
209	{
210	//-- show visible scene nodes and octree bounding boxes from last frame
211	if (mShowVisualization)
212	{
213	PrepareVisualization(cam);
214	}
215	else
216	{
217	// for hierarchical culling, we interleave identification
218	// and rendering of objects in _renderVisibibleObjects
219
220	// for the shadow pass we use only standard rendering
221	// because of low occlusion
222	if (mShadowTechnique == SHADOWTYPE_TEXTURE_MODULATIVE &&
223	mIlluminationStage == IRS_RENDER_TO_TEXTURE)
224	{
225	OctreeSceneManager::_findVisibleObjects(cam, onlyShadowCasters);
226	}
227	// only shadow casters will be rendered in shadow texture pass
228	// mHierarchyInterface->SetOnlyShadowCasters(onlyShadowCasters);
229	}
230
231
232	// -- delete lists stored for visualization
233	mVisible.clear();
234	mBoxes.clear();
235	}
236	//-----------------------------------------------------------------------
237	void VisibilityOctreeSceneManager::_renderVisibleObjects()
238	{
239	InitDepthPass(); // create material for depth pass
240	InitItemBufferPass(); // create material for item buffer pass
241
242	// save ambient light to reset later
243	ColourValue savedAmbient = mAmbientLight;
244
245	//-- apply standard rendering for some modes (e.g., visualization, shadow pass)
246
247	if (mShowVisualization \|\|
248	(mShadowTechnique == SHADOWTYPE_TEXTURE_MODULATIVE &&
249	mIlluminationStage == IRS_RENDER_TO_TEXTURE))
250	{
251	IlluminationRenderStage savedStage = mIlluminationStage;
252
253	if (mShowVisualization)
254	{
255	// disable illumination stage to prevent rendering shadows
256	mIlluminationStage = IRS_NONE;
257	}
258
259	// standard rendering for shadow maps because of performance
260	OctreeSceneManager::_renderVisibleObjects();
261
262	mIlluminationStage = savedStage;
263	}
264	else //-- the hierarchical culling algorithm
265	{
266	// don't render backgrounds for item buffer
267	if (mUseItemBuffer)
268	{
269	clearSpecialCaseRenderQueues();
270	getRenderQueue()->clear();
271	}
272
273	//-- hierarchical culling
274	// the objects of different layers (e.g., background, scene,
275	// overlay) must be identified and rendered one after another
276
277	//-- render all early skies
278	clearSpecialCaseRenderQueues();
279	addSpecialCaseRenderQueue(RENDER_QUEUE_BACKGROUND);
280	addSpecialCaseRenderQueue(RENDER_QUEUE_SKIES_EARLY);
281	setSpecialCaseRenderQueueMode(SceneManager::SCRQM_INCLUDE);
282
283	OctreeSceneManager::_renderVisibleObjects();
284
285
286	#ifdef GTP_VISIBILITY_MODIFIED_OGRE
287	// delete previously rendered content
288	_deleteRenderedQueueGroups();
289	#endif
290
291	//-- prepare queue for visible objects (i.e., all but overlay and skies late)
292	clearSpecialCaseRenderQueues();
293	addSpecialCaseRenderQueue(RENDER_QUEUE_SKIES_LATE);
294	addSpecialCaseRenderQueue(RENDER_QUEUE_OVERLAY);
295	setSpecialCaseRenderQueueMode(SceneManager::SCRQM_EXCLUDE);
296
297
298	// set all necessary parameters for
299	// hierarchical visibility culling and rendering
300	InitVisibilityCulling(mCameraInProgress);
301
302	/**
303	* the hierarchical culling algorithm
304	* for depth pass: we just find objects and update depth buffer
305	* for "delayed" rendering: we render some passes afterwards
306	* e.g., transparents, because they need front-to-back sorting
307	**/
308
309	mVisibilityManager->ApplyVisibilityCulling();
310
311	// delete remaining renderables from queue (all not in mLeavePassesInQueue)
312	#ifdef GTP_VISIBILITY_MODIFIED_OGRE
313	_deleteRenderedQueueGroups(mLeavePassesInQueue);
314	#endif
315
316	//-- reset parameters
317	mRenderDepthPass = false;
318	mRenderItemBuffer = false;
319	mSkipTransparents = false;
320	mLeavePassesInQueue = 0;
321	mShadowTechnique = mSavedShadowTechnique;
322
323
324	// add visible nodes found by the visibility culling algorithm
325	if (mUseDepthPass)
326	{
327	for (NodeList::iterator it = mVisible.begin(); it != mVisible.end(); ++it)
328	{
329	(*it)->_addToRenderQueue(mCameraInProgress, getRenderQueue(), false);
330	}
331	}
332
333	//-- we render all remaining queue objects
334	// used for depth pass, transparents, overlay
335	clearSpecialCaseRenderQueues();
336	OctreeSceneManager::_renderVisibleObjects();
337
338	} // hierarchical culling
339
340	// reset ambient light
341	setAmbientLight(savedAmbient);
342
343	getRenderQueue()->clear(); // finally clear render queue
344	//WriteLog(); // write out stats
345	}
346
347	//-----------------------------------------------------------------------
348	void VisibilityOctreeSceneManager::_updateSceneGraph(Camera* cam)
349	{
350	mVisibilityManager->GetCullingManager()->SetHierarchyInterface(mHierarchyInterface);
351	mHierarchyInterface->SetRenderSystem(mDestRenderSystem);
352
353	OctreeSceneManager::_updateSceneGraph(cam);
354	}
355	//-----------------------------------------------------------------------
356	bool VisibilityOctreeSceneManager::setOption(const String & key, const void * val)
357	{
358	if (key == "UseDepthPass")
359	{
360	mUseDepthPass = (static_cast<const bool >(val));
361	return true;
362	}
363	if (key == "PrepareVisualization")
364	{
365	mShowVisualization = (static_cast<const bool >(val));
366	return true;
367	}
368	if (key == "RenderNodesForViz")
369	{
370	mRenderNodesForViz = (static_cast<const bool >(val));
371	return true;
372	}
373	if (key == "RenderNodesContentForViz")
374	{
375	mRenderNodesContentForViz = (static_cast<const bool >(val));
376	return true;
377	}
378	if (key == "SkyBoxEnabled")
379	{
380	mSkyBoxEnabled = (static_cast<const bool >(val));
381	return true;
382	}
383	if (key == "SkyPlaneEnabled")
384	{
385	mSkyPlaneEnabled = (static_cast<const bool >(val));
386	return true;
387	}
388	if (key == "SkyDomeEnabled")
389	{
390	mSkyDomeEnabled = (static_cast<const bool >(val));
391	return true;
392	}
393	if (key == "VisualizeCulledNodes")
394	{
395	mVisualizeCulledNodes = (static_cast<const bool >(val));
396	return true;
397	}
398	if (key == "DelayRenderTransparents")
399	{
400	mDelayRenderTransparents = (static_cast<const bool >(val));
401	return true;
402	}
403
404	if (key == "DepthWrite")
405	{
406	mEnableDepthWrite = (static_cast<const bool >(val));
407	return true;
408	}
409	if (key == "UseItemBuffer")
410	{
411	mUseItemBuffer = (static_cast<const bool >(val));
412	return true;
413	}
414	if (key == "ExecuteVertexProgramForAllPasses")
415	{
416	mExecuteVertexProgramForAllPasses = (static_cast<const bool >(val));
417	return true;
418	}
419	if (key == "RenderTransparentsForItemBuffer")
420	{
421	mRenderTransparentsForItemBuffer = (static_cast<const bool >(val));
422	return true;
423	}
424
425	return VisibilityOptionsManager(mVisibilityManager, mHierarchyInterface).
426	setOption(key, val) \|\| OctreeSceneManager::setOption(key, val);
427	}
428	//-----------------------------------------------------------------------
429	bool VisibilityOctreeSceneManager::getOption(const String & key, void *val)
430	{
431	if (key == "NumHierarchyNodes")
432	{
433	* static_cast<unsigned int *>(val) = (unsigned int)mNumOctreeNodes;
434	return true;
435	}
436
437	return VisibilityOptionsManager(mVisibilityManager, mHierarchyInterface).
438	getOption(key, val) && OctreeSceneManager::getOption(key, val);
439	}
440	//-----------------------------------------------------------------------
441	bool VisibilityOctreeSceneManager::getOptionValues(const String & key, StringVector &refValueList)
442	{
443	return OctreeSceneManager::getOptionValues( key, refValueList );
444	}
445	//-----------------------------------------------------------------------
446	bool VisibilityOctreeSceneManager::getOptionKeys(StringVector & refKeys)
447	{
448	return VisibilityOptionsManager(mVisibilityManager, mHierarchyInterface).
449	getOptionKeys (refKeys) \|\| OctreeSceneManager::getOptionKeys(refKeys);
450	}
451	//-----------------------------------------------------------------------
452	void VisibilityOctreeSceneManager::setVisibilityManager(GtpVisibility::VisibilityManager *visManager)
453	{
454	mVisibilityManager = visManager;
455	}
456	//-----------------------------------------------------------------------
457	GtpVisibility::VisibilityManager *VisibilityOctreeSceneManager::getVisibilityManager()
458	{
459	return mVisibilityManager;
460	}
461	//-----------------------------------------------------------------------
462	void VisibilityOctreeSceneManager::WriteLog()
463	{
464	std::stringstream d;
465
466	d << "Depth pass: " << StringConverter::toString(mUseDepthPass) << ", "
467	<< "Delay transparents: " << StringConverter::toString(mDelayRenderTransparents) << ", "
468	<< "Use optimization: " << StringConverter::toString(mHierarchyInterface->GetTestGeometryForVisibleLeaves()) << ", "
469	<< "Algorithm type: " << mVisibilityManager->GetCullingManagerType() << "\n"
470	<< "Hierarchy nodes: " << mNumOctreeNodes << ", "
471	<< "Traversed nodes: " << mHierarchyInterface->GetNumTraversedNodes() << ", "
472	<< "Rendered nodes: " << mHierarchyInterface->GetNumRenderedNodes() << ", "
473	<< "Query culled nodes: " << mVisibilityManager->GetCullingManager()->GetNumQueryCulledNodes() << ", "
474	<< "Frustum culled nodes: " << mVisibilityManager->GetCullingManager()->GetNumFrustumCulledNodes() << ", "
475	<< "Queries issued: " << mVisibilityManager->GetCullingManager()->GetNumQueriesIssued() << "\n";
476	/*<< "avg. FPS: " << mCurrentViewport->getTarget()->getAverageFPS() << ", "
477	<< "best FPS: " << mCurrentViewport->getTarget()->getBestFPS() << ", "
478	<< "worst FPS: " << mCurrentViewport->getTarget()->getWorstFPS() << ", "
479	<< "best frame time: " << mCurrentViewport->getTarget()->getBestFrameTime() << ", "
480	<< "worst frame time: " << mCurrentViewport->getTarget()->getWorstFrameTime() << "\n";*/
481
482	LogManager::getSingleton().logMessage(d.str());
483	}
484	//-----------------------------------------------------------------------
485	void VisibilityOctreeSceneManager::renderObjects(
486	const RenderPriorityGroup::TransparentRenderablePassList& objs,
487	bool doLightIteration, const LightList* manualLightList)
488	{
489	// for correct rendering, transparents must be rendered after hierarchical culling
490	if (!mSkipTransparents)
491	{
492	OctreeSceneManager::renderObjects(objs, doLightIteration, manualLightList);
493	}
494	}
495	//-----------------------------------------------------------------------
496	bool VisibilityOctreeSceneManager::validatePassForRendering(Pass* pass)
497	{
498	// skip all but first pass if we are doing the depth pass
499	if ((mRenderDepthPass \|\| mRenderItemBuffer) && pass->getIndex() > 0)
500	{
501	return false;
502	}
503	return SceneManager::validatePassForRendering(pass);
504	}
505	//-----------------------------------------------------------------------
506	void VisibilityOctreeSceneManager::renderQueueGroupObjects(RenderQueueGroup* pGroup)
507	{
508	if (!mRenderItemBuffer)
509	{
510	OctreeSceneManager::renderQueueGroupObjects(pGroup);
511	return;
512	}
513
514	// --- item buffer
515
516	// Iterate through priorities
517	RenderQueueGroup::PriorityMapIterator groupIt = pGroup->getIterator();
518
519	while (groupIt.hasMoreElements())
520	{
521	RenderItemBuffer(groupIt.getNext());
522	}
523	}
524	//-----------------------------------------------------------------------
525	void VisibilityOctreeSceneManager::RenderItemBuffer(RenderPriorityGroup* pGroup)
526	{
527	// Do solids
528	RenderPriorityGroup::SolidRenderablePassMap solidObjs = pGroup->_getSolidPasses();
529
530	// ----- SOLIDS LOOP -----
531	RenderPriorityGroup::SolidRenderablePassMap::const_iterator ipass, ipassend;
532	ipassend = solidObjs.end();
533
534	for (ipass = solidObjs.begin(); ipass != ipassend; ++ipass)
535	{
536	// Fast bypass if this group is now empty
537	if (ipass->second->empty())
538	continue;
539
540	// Render only first pass
541	if (ipass->first->getIndex() > 0)
542	continue;
543
544	RenderPriorityGroup::RenderableList* rendList = ipass->second;
545
546	RenderPriorityGroup::RenderableList::const_iterator irend, irendend;
547	irendend = rendList->end();
548
549	for (irend = rendList->begin(); irend != irendend; ++irend)
550	{
551	std::stringstream d; d << "itembuffer, pass name: " <<
552	ipass->first->getParent()->getParent()->getName();
553
554	LogManager::getSingleton().logMessage(d.str());
555
556	RenderSingleObjectForItemBuffer(*irend, ipass->first);
557	}
558	}
559
560	// -- TRANSPARENT LOOP: must be handled differently
561
562	// transparents are treated either as solids or completely discarded
563	if (mRenderTransparentsForItemBuffer)
564	{
565	RenderPriorityGroup::TransparentRenderablePassList transpObjs =
566	pGroup->_getTransparentPasses();
567	RenderPriorityGroup::TransparentRenderablePassList::const_iterator
568	itrans, itransend;
569
570	itransend = transpObjs.end();
571	for (itrans = transpObjs.begin(); itrans != itransend; ++itrans)
572	{
573	// like for solids, render only first pass
574	if (itrans->pass->getIndex() == 0)
575	{
576	RenderSingleObjectForItemBuffer(itrans->renderable, itrans->pass);
577	}
578	}
579	}
580	}
581	//-----------------------------------------------------------------------
582	void VisibilityOctreeSceneManager::RenderSingleObjectForItemBuffer(Renderable rend, Pass pass)
583	{
584	static LightList nullLightList;
585
586	int col[4];
587
588	// -- create color code out of object id
589	col[0] = (rend->getId() >> 16) & 255;
590	col[1] = (rend->getId() >> 8) & 255;
591	col[2] = rend->getId() & 255;
592	// col[3] = 255;
593
594	//mDestRenderSystem->setColour(col[0], col[1], col[2], col[3]);
595
596	mItemBufferPass->setAmbient(ColourValue(col[0] / 255.0f,
597	col[1] / 255.0f,
598	col[2] / 255.0f, 1));
599
600	// set vertex program of current pass
601	if (mExecuteVertexProgramForAllPasses && pass->hasVertexProgram())
602	{
603	mItemBufferPass->setVertexProgram(pass->getVertexProgramName());
604
605	if (mItemBufferPass->hasVertexProgram())
606	{
607	const GpuProgramPtr& prg = mItemBufferPass->getVertexProgram();
608	// Load this program if not done already
609	if (!prg->isLoaded())
610	prg->load();
611	// Copy params
612	mItemBufferPass->setVertexProgramParameters(pass->getVertexProgramParameters());
613	}
614	}
615	else if (mItemBufferPass->hasVertexProgram())
616	{
617	mItemBufferPass->setVertexProgram("");
618	}
619
620	Pass *usedPass = setPass(mItemBufferPass);
621
622
623	// Render a single object, this will set up auto params if required
624	renderSingleObject(rend, usedPass, false, &nullLightList);
625	}
626	//-----------------------------------------------------------------------
627	GtpVisibility::VisibilityManager *VisibilityOctreeSceneManager::GetVisibilityManager()
628	{
629	return mVisibilityManager;
630	}
631	//-----------------------------------------------------------------------
632	void VisibilityOctreeSceneManager::InitVisibilityCulling(Camera *cam)
633	{
634	// reset culling manager stats
635	mVisibilityManager->GetCullingManager()->InitFrame(mVisualizeCulledNodes);
636
637	// save shadow technique. It will be reset after hierarchical culling
638	mSavedShadowTechnique = mShadowTechnique;
639
640	// render standard solids without shadows during hierarchical culling pass
641	if ((mShadowTechnique == SHADOWTYPE_STENCIL_ADDITIVE) \|\|
642	(mShadowTechnique == SHADOWTYPE_STENCIL_MODULATIVE))
643	{
644	mShadowTechnique = SHADOWTYPE_NONE;
645	}
646
647	// set depth pass flag before rendering
648	mRenderDepthPass = mUseDepthPass;
649
650	// item buffer needs full ambient lighting to use item colors as unique id
651	if (mUseItemBuffer)
652	{
653	mRenderItemBuffer = true;
654	setAmbientLight(ColourValue(1,1,1,1));
655	}
656
657
658	// set passes which are stored in render queue
659	// for rendering AFTER hierarchical culling, i.e., passes which need
660	// a special rendering order
661
662	mLeavePassesInQueue = 0;
663
664	if (!mUseDepthPass \|\| !mUseItemBuffer)
665	{
666	if (mShadowTechnique == SHADOWTYPE_STENCIL_ADDITIVE)
667	{
668	// TODO: remove this pass because it should be processed during hierarchical culling
669	mLeavePassesInQueue \|= RenderPriorityGroup::SOLID_PASSES_NOSHADOW;
670
671	mLeavePassesInQueue \|= RenderPriorityGroup::SOLID_PASSES_DECAL;
672	mLeavePassesInQueue \|= RenderPriorityGroup::SOLID_PASSES_DIFFUSE_SPECULAR;
673	mLeavePassesInQueue \|= RenderPriorityGroup::TRANSPARENT_PASSES;
674
675	// just render ambient passes
676	mIlluminationStage = IRS_AMBIENT;
677	}
678
679	if (mShadowTechnique == SHADOWTYPE_STENCIL_MODULATIVE)
680	{
681	mLeavePassesInQueue \|= RenderPriorityGroup::SOLID_PASSES_NOSHADOW;
682	mLeavePassesInQueue \|= RenderPriorityGroup::TRANSPARENT_PASSES;
683	}
684
685	// transparents should be rendered after hierarchical culling to
686	// provide front-to-back ordering
687	if (mDelayRenderTransparents)
688	{
689	mLeavePassesInQueue \|= RenderPriorityGroup::TRANSPARENT_PASSES;
690	}
691	}
692
693	// skip rendering transparents in the hierarchical culling
694	// (because they will be rendered afterwards)
695	mSkipTransparents = mUseDepthPass \|\|
696	(mLeavePassesInQueue & RenderPriorityGroup::TRANSPARENT_PASSES);
697
698	// -- initialise interface for rendering traversal of the hierarchy
699	mHierarchyInterface->SetHierarchyRoot(mOctree);
700
701	// possible two cameras (one for culling, one for rendering)
702	mHierarchyInterface->InitTraversal(mCameraInProgress,
703	mCullCamera ? getCamera("CullCamera") : NULL,
704	mLeavePassesInQueue);
705
706	//std::stringstream d; d << "leave passes in queue: " << mLeavePassesInQueue;LogManager::getSingleton().logMessage(d.str());
707	}
708	//-----------------------------------------------------------------------
709	OctreeHierarchyInterface *VisibilityOctreeSceneManager::GetHierarchyInterface()
710	{
711	return mHierarchyInterface;
712	}
713	//-----------------------------------------------------------------------
714	/void VisibilityOctreeSceneManager::renderBasicQueueGroupObjects(RenderQueueGroup pGroup)
715	{
716	// Basic render loop: Iterate through priorities
717	RenderQueueGroup::PriorityMapIterator groupIt = pGroup->getIterator();
718
719	while (groupIt.hasMoreElements())
720	{
721	RenderPriorityGroup* pPriorityGrp = groupIt.getNext();
722
723	// Sort the queue first
724	pPriorityGrp->sort(mCameraInProgress);
725
726	// Do solids
727	// TODO: render other solid passes for shadows
728	renderObjects(pPriorityGrp->_getSolidPassesNoShadows(), true);
729
730	// do solid passes no shadows if addititive stencil shadows
731	if (mSavedShadowTechnique == SHADOWTYPE_STENCIL_ADDITIVE)
732	renderObjects(pPriorityGrp->_getSolidPassesNoShadows(), true);
733
734	// Do transparents
735	renderObjects(pPriorityGrp->_getTransparentPasses(), true);
736
737
738	}// for each priority
739	}*/
740	} // namespace Ogre

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