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source: trunk/VUT/Ogre/src/OgreVisibilityTerrainSceneManager.cpp @ 159

Revision 159, 24.4 KB checked in by mattausch, 19 years ago (diff)
added flags for switching on/off transparents for item buffer and vertex programs for depth pass / item buffer

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1	#include "OgreVisibilityTerrainSceneManager.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	VisibilityTerrainSceneManager::VisibilityTerrainSceneManager(GtpVisibility::
17	VisibilityManager *visManager):
18	mVisibilityManager(visManager),
19	mShowVisualization(false),
20	mRenderNodesForViz(false),
21	mRenderNodesContentForViz(false),
22	mVisualizeCulledNodes(false),
23	mLeavePassesInQueue(0),
24	mDelayRenderTransparents(true),
25	mUseDepthPass(false),
26	mRenderDepthPass(false),
27	mUseItemBuffer(false),
28	//mUseItemBuffer(true),
29	mRenderItemBuffer(false),
30	mCurrentEntityId(1),
31	mEnableDepthWrite(true),
32	mSkipTransparents(false),
33	mSavedShadowTechnique(SHADOWTYPE_NONE),
34	mRenderTransparentsForItemBuffer(false),
35	mExecuteVertexProgramForAllPasses(false)
36	{
37	mHierarchyInterface = new OctreeHierarchyInterface(this, mDestRenderSystem);
38
39	//mDisplayNodes = true;
40	//mShowBoundingBoxes = true;
41	//mShowBoxes = true;
42	//mShowBoxes = true;
43
44	// TODO: set maxdepth to reasonable value
45	mMaxDepth = 50;
46	}
47	//-----------------------------------------------------------------------
48	void VisibilityTerrainSceneManager::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	VisibilityTerrainSceneManager::~VisibilityTerrainSceneManager()
70	{
71	if (mHierarchyInterface)
72	{
73	delete mHierarchyInterface;
74	mHierarchyInterface = NULL;
75	}
76	}
77	//-----------------------------------------------------------------------
78	void VisibilityTerrainSceneManager::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 VisibilityTerrainSceneManager::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 VisibilityTerrainSceneManager::setPass(Pass pass)
149	{
150	// TODO: setting vertex program is not efficient
151	//Pass *usedPass = ((mRenderDepthPass && !pass->hasVertexProgram()) ? mDepthPass : pass);
152
153	// set depth fill pass if we currently do not make an aabb occlusion query
154	Pass *usedPass = (mRenderDepthPass && !mHierarchyInterface->IsBoundingBoxQuery() ?
155	mDepthPass : pass);
156
157	IlluminationRenderStage savedStage = mIlluminationStage;
158
159	// set illumination stage to NONE so no shadow material is used
160	// for depth pass or for occlusion query
161	if (mRenderDepthPass \|\| mHierarchyInterface->IsBoundingBoxQuery())
162	{
163	mIlluminationStage = IRS_NONE;
164	}
165
166	// --- set vertex program of current pass in order to set correct depth
167	if (mExecuteVertexProgramForAllPasses && mRenderDepthPass && pass->hasVertexProgram())
168	{
169	// add vertex program of current pass to depth pass
170	mDepthPass->setVertexProgram(pass->getVertexProgramName());
171
172	if (mDepthPass->hasVertexProgram())
173	{
174	const GpuProgramPtr& prg = mDepthPass->getVertexProgram();
175	// Load this program if not done already
176	if (!prg->isLoaded())
177	prg->load();
178	// Copy params
179	mDepthPass->setVertexProgramParameters(pass->getVertexProgramParameters());
180	}
181	}
182	else if (mDepthPass->hasVertexProgram())
183	{
184	mDepthPass->setVertexProgram("");
185	}
186
187
188	bool IsDepthWrite = usedPass->getDepthWriteEnabled();
189
190	// global option which enables / disables depth writes
191	if (!mEnableDepthWrite)
192	{
193	usedPass->setDepthWriteEnabled(false);
194	}
195	//else if (mIsItemBufferPass) {usedPass = mItemBufferPass;}
196
197	Pass *result = SceneManager::setPass(usedPass);
198
199	// reset depth write
200	if (!mEnableDepthWrite)
201	{
202	usedPass->setDepthWriteEnabled(IsDepthWrite);
203	}
204
205	// reset illumination stage
206	mIlluminationStage = savedStage;
207
208	return result;
209	}
210	//-----------------------------------------------------------------------
211	void VisibilityTerrainSceneManager::_findVisibleObjects(Camera* cam, bool onlyShadowCasters)
212	{
213	//-- show visible scene nodes and octree bounding boxes from last frame
214	if (mShowVisualization)
215	{
216	PrepareVisualization(cam);
217	}
218	else
219	{
220	// for hierarchical culling, we interleave identification
221	// and rendering of objects in _renderVisibibleObjects
222
223	// for the shadow pass we use only standard rendering
224	// because of low occlusion
225	if (mShadowTechnique == SHADOWTYPE_TEXTURE_MODULATIVE &&
226	mIlluminationStage == IRS_RENDER_TO_TEXTURE)
227	{
228	TerrainSceneManager::_findVisibleObjects(cam, onlyShadowCasters);
229	}
230	// only shadow casters will be rendered in shadow texture pass
231	// mHierarchyInterface->SetOnlyShadowCasters(onlyShadowCasters);
232	}
233
234
235	// -- delete lists stored for visualization
236	mVisible.clear();
237	mBoxes.clear();
238	}
239	//-----------------------------------------------------------------------
240	void VisibilityTerrainSceneManager::_renderVisibleObjects()
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	// disable illumination stage to prevent rendering shadows
255	mIlluminationStage = IRS_NONE;
256
257	// standard rendering for shadow maps because of performance
258	TerrainSceneManager::_renderVisibleObjects();
259
260	mIlluminationStage = savedStage;
261	}
262	else //-- the hierarchical culling algorithm
263	{
264	// don't render backgrounds for item buffer
265	if (mUseItemBuffer)
266	{
267	clearSpecialCaseRenderQueues();
268	getRenderQueue()->clear();
269	}
270
271	//-- hierarchical culling
272	// the objects of different layers (e.g., background, scene,
273	// overlay) must be identified and rendered one after another
274
275	//-- render all early skies
276	clearSpecialCaseRenderQueues();
277	addSpecialCaseRenderQueue(RENDER_QUEUE_BACKGROUND);
278	addSpecialCaseRenderQueue(RENDER_QUEUE_SKIES_EARLY);
279	setSpecialCaseRenderQueueMode(SceneManager::SCRQM_INCLUDE);
280
281	TerrainSceneManager::_renderVisibleObjects();
282
283
284	#ifdef GTP_VISIBILITY_MODIFIED_OGRE
285	// delete previously rendered content
286	_deleteRenderedQueueGroups();
287	#endif
288
289	//-- prepare queue for visible objects (i.e., all but overlay and skies late)
290	clearSpecialCaseRenderQueues();
291	addSpecialCaseRenderQueue(RENDER_QUEUE_SKIES_LATE);
292	addSpecialCaseRenderQueue(RENDER_QUEUE_OVERLAY);
293	setSpecialCaseRenderQueueMode(SceneManager::SCRQM_EXCLUDE);
294
295
296	// set all necessary parameters for
297	// hierarchical visibility culling and rendering
298	InitVisibilityCulling(mCameraInProgress);
299
300	/**
301	* the hierarchical culling algorithm
302	* for depth pass: we just find objects and update depth buffer
303	* for "delayed" rendering: we render some passes afterwards
304	* e.g., transparents, because they need front-to-back sorting
305	**/
306
307	mVisibilityManager->ApplyVisibilityCulling();
308
309	// delete remaining renderables from queue (all not in mLeavePassesInQueue)
310	#ifdef GTP_VISIBILITY_MODIFIED_OGRE
311	_deleteRenderedQueueGroups(mLeavePassesInQueue);
312	#endif
313
314	//-- reset parameters
315	mRenderDepthPass = false;
316	mRenderItemBuffer = false;
317	mSkipTransparents = false;
318	mLeavePassesInQueue = 0;
319	mShadowTechnique = mSavedShadowTechnique;
320
321
322	// add visible nodes found by the visibility culling algorithm
323	if (mUseDepthPass)
324	{
325	for (NodeList::iterator it = mVisible.begin(); it != mVisible.end(); ++it)
326	{
327	(*it)->_addToRenderQueue(mCameraInProgress, getRenderQueue(), false);
328	}
329	}
330
331	//-- now we can render all remaining queue objects
332	// used for depth pass, transparents, overlay
333	clearSpecialCaseRenderQueues();
334	TerrainSceneManager::_renderVisibleObjects();
335	}
336
337	// set the new render level index
338	TerrainRenderable::NextRenderLevelIndex();
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 VisibilityTerrainSceneManager::_updateSceneGraph(Camera* cam)
349	{
350	mVisibilityManager->GetCullingManager()->SetHierarchyInterface(mHierarchyInterface);
351	mHierarchyInterface->SetRenderSystem(mDestRenderSystem);
352
353	TerrainSceneManager::_updateSceneGraph(cam);
354	}
355	//-----------------------------------------------------------------------
356	bool VisibilityTerrainSceneManager::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) \|\| TerrainSceneManager::setOption(key, val);
427	}
428	//-----------------------------------------------------------------------
429	bool VisibilityTerrainSceneManager::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) && TerrainSceneManager::getOption(key, val);
439	}
440	//-----------------------------------------------------------------------
441	bool VisibilityTerrainSceneManager::getOptionValues(const String & key,
442	StringVector &refValueList)
443	{
444	return TerrainSceneManager::getOptionValues( key, refValueList);
445	}
446	//-----------------------------------------------------------------------
447	bool VisibilityTerrainSceneManager::getOptionKeys(StringVector & refKeys)
448	{
449	return VisibilityOptionsManager(mVisibilityManager, mHierarchyInterface).
450	getOptionKeys(refKeys) \|\| TerrainSceneManager::getOptionKeys(refKeys);
451	}
452	//-----------------------------------------------------------------------
453	void VisibilityTerrainSceneManager::setVisibilityManager(GtpVisibility::
454	VisibilityManager *visManager)
455	{
456	mVisibilityManager = visManager;
457	}
458	//-----------------------------------------------------------------------
459	GtpVisibility::VisibilityManager *VisibilityTerrainSceneManager::getVisibilityManager( void )
460	{
461	return mVisibilityManager;
462	}
463	//-----------------------------------------------------------------------
464	void VisibilityTerrainSceneManager::WriteLog()
465	{
466	std::stringstream d;
467
468	d << "Depth pass: " << StringConverter::toString(mUseDepthPass) << ", "
469	<< "Delay transparents: " << StringConverter::toString(mDelayRenderTransparents) << ", "
470	<< "Use optimization: " << StringConverter::toString(mHierarchyInterface->GetTestGeometryForVisibleLeaves()) << ", "
471	<< "Algorithm type: " << mVisibilityManager->GetCullingManagerType() << ", "
472	<< "Hierarchy nodes: " << mNumOctreeNodes << ", "
473	<< "Traversed nodes: " << mHierarchyInterface->GetNumTraversedNodes() << ", "
474	<< "Rendered nodes: " << mHierarchyInterface->GetNumRenderedNodes() << ", "
475	<< "Query culled nodes: " << mVisibilityManager->GetCullingManager()->GetNumQueryCulledNodes() << ", "
476	<< "Frustum culled nodes: " << mVisibilityManager->GetCullingManager()->GetNumFrustumCulledNodes() << ", "
477	<< "Queries issued: " << mVisibilityManager->GetCullingManager()->GetNumQueriesIssued() << "\n";
478
479	LogManager::getSingleton().logMessage(d.str());
480	}
481	//-----------------------------------------------------------------------
482	void VisibilityTerrainSceneManager::renderObjects(
483	const RenderPriorityGroup::TransparentRenderablePassList& objs,
484	bool doLightIteration, const LightList* manualLightList)
485	{
486	// for correct rendering, transparents must be rendered after hierarchical culling
487	if (!mSkipTransparents)
488	{
489	OctreeSceneManager::renderObjects(objs, doLightIteration, manualLightList);
490	}
491	}
492	//-----------------------------------------------------------------------
493	bool VisibilityTerrainSceneManager::validatePassForRendering(Pass* pass)
494	{
495	// skip all but first pass if we are doing the depth pass
496	if ((mRenderDepthPass \|\| mRenderItemBuffer) && pass->getIndex() > 0)
497	{
498	return false;
499	}
500	return SceneManager::validatePassForRendering(pass);
501	}
502	//-----------------------------------------------------------------------
503	void VisibilityTerrainSceneManager::renderQueueGroupObjects(RenderQueueGroup* pGroup)
504	{
505	if (!mRenderItemBuffer)
506	{
507	TerrainSceneManager::renderQueueGroupObjects(pGroup);
508	return;
509	}
510
511	// --- item buffer
512
513	// Iterate through priorities
514	RenderQueueGroup::PriorityMapIterator groupIt = pGroup->getIterator();
515
516	while (groupIt.hasMoreElements())
517	{
518	RenderItemBuffer(groupIt.getNext());
519	}
520	}
521	//-----------------------------------------------------------------------
522	void VisibilityTerrainSceneManager::RenderItemBuffer(RenderPriorityGroup* pGroup)
523	{
524	// Do solids
525	RenderPriorityGroup::SolidRenderablePassMap solidObjs = pGroup->_getSolidPasses();
526
527	// ----- SOLIDS LOOP -----
528	RenderPriorityGroup::SolidRenderablePassMap::const_iterator ipass, ipassend;
529	ipassend = solidObjs.end();
530
531	for (ipass = solidObjs.begin(); ipass != ipassend; ++ipass)
532	{
533	// Fast bypass if this group is now empty
534	if (ipass->second->empty())
535	continue;
536
537	// Render only first pass
538	if (ipass->first->getIndex() > 0)
539	continue;
540
541	RenderPriorityGroup::RenderableList* rendList = ipass->second;
542
543	RenderPriorityGroup::RenderableList::const_iterator irend, irendend;
544	irendend = rendList->end();
545
546	for (irend = rendList->begin(); irend != irendend; ++irend)
547	{
548	std::stringstream d; d << "itembuffer, pass name: " <<
549	ipass->first->getParent()->getParent()->getName();
550
551	LogManager::getSingleton().logMessage(d.str());
552
553	RenderSingleObjectForItemBuffer(*irend, ipass->first);
554	}
555	}
556
557	// -- TRANSPARENT LOOP: must be handled differently
558
559	// transparents are treated either as solids or completely discarded
560	if (mRenderTransparentsForItemBuffer)
561	{
562	RenderPriorityGroup::TransparentRenderablePassList transpObjs =
563	pGroup->_getTransparentPasses();
564	RenderPriorityGroup::TransparentRenderablePassList::const_iterator
565	itrans, itransend;
566
567	itransend = transpObjs.end();
568	for (itrans = transpObjs.begin(); itrans != itransend; ++itrans)
569	{
570	// like for solids, render only first pass
571	if (itrans->pass->getIndex() == 0)
572	{
573	RenderSingleObjectForItemBuffer(itrans->renderable, itrans->pass);
574	}
575	}
576	}
577	}
578	//-----------------------------------------------------------------------
579	void VisibilityTerrainSceneManager::RenderSingleObjectForItemBuffer(Renderable rend, Pass pass)
580	{
581	static LightList nullLightList;
582
583	int col[4];
584
585	// -- create color code out of object id
586	col[0] = (rend->getId() >> 16) & 255;
587	col[1] = (rend->getId() >> 8) & 255;
588	col[2] = rend->getId() & 255;
589	// col[3] = 255;
590
591	//mDestRenderSystem->setColour(col[0], col[1], col[2], col[3]);
592
593	mItemBufferPass->setAmbient(ColourValue(col[0] / 255.0f,
594	col[1] / 255.0f,
595	col[2] / 255.0f, 1));
596
597	// set vertex program of current pass
598	if (mExecuteVertexProgramForAllPasses && pass->hasVertexProgram())
599	{
600	mItemBufferPass->setVertexProgram(pass->getVertexProgramName());
601
602	if (mItemBufferPass->hasVertexProgram())
603	{
604	const GpuProgramPtr& prg = mItemBufferPass->getVertexProgram();
605	// Load this program if not done already
606	if (!prg->isLoaded())
607	prg->load();
608	// Copy params
609	mItemBufferPass->setVertexProgramParameters(pass->getVertexProgramParameters());
610	}
611	}
612	else if (mItemBufferPass->hasVertexProgram())
613	{
614	mItemBufferPass->setVertexProgram("");
615	}
616
617	Pass *usedPass = setPass(mItemBufferPass);
618
619
620	// Render a single object, this will set up auto params if required
621	renderSingleObject(rend, usedPass, false, &nullLightList);
622	}
623	//-----------------------------------------------------------------------
624	GtpVisibility::VisibilityManager *VisibilityTerrainSceneManager::GetVisibilityManager()
625	{
626	return mVisibilityManager;
627	}
628	//-----------------------------------------------------------------------
629	void VisibilityTerrainSceneManager::InitVisibilityCulling(Camera *cam)
630	{
631	InitDepthPass(); // create material for depth pass
632	InitItemBufferPass(); // create material for item buffer pass
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	mLeavePassesInQueue = 0;
662
663	if (!mUseDepthPass \|\| !mUseItemBuffer)
664	{
665	if (mShadowTechnique == SHADOWTYPE_STENCIL_ADDITIVE)
666	{
667	// TODO: remove this pass because it should be processed during hierarchical culling
668	mLeavePassesInQueue \|= RenderPriorityGroup::SOLID_PASSES_NOSHADOW;
669
670	mLeavePassesInQueue \|= RenderPriorityGroup::SOLID_PASSES_DECAL;
671	mLeavePassesInQueue \|= RenderPriorityGroup::SOLID_PASSES_DIFFUSE_SPECULAR;
672	mLeavePassesInQueue \|= RenderPriorityGroup::TRANSPARENT_PASSES;
673
674	// just render ambient stuff
675	mIlluminationStage = IRS_AMBIENT;
676	}
677
678	if (mShadowTechnique == SHADOWTYPE_STENCIL_MODULATIVE)
679	{
680	mLeavePassesInQueue \|= RenderPriorityGroup::SOLID_PASSES_NOSHADOW;
681	mLeavePassesInQueue \|= RenderPriorityGroup::TRANSPARENT_PASSES;
682	}
683
684	// transparents should be rendered after hierarchical culling to
685	// provide front-to-back ordering
686	if (mDelayRenderTransparents)
687	{
688	mLeavePassesInQueue \|= RenderPriorityGroup::TRANSPARENT_PASSES;
689	}
690	}
691
692	// skip rendering transparents in the hierarchical culling
693	// (because they will be rendered afterwards)
694	mSkipTransparents = mUseDepthPass \|\|
695	(mLeavePassesInQueue & RenderPriorityGroup::TRANSPARENT_PASSES);
696
697	// -- initialise interface for rendering traversal of the hierarchy
698	mHierarchyInterface->SetHierarchyRoot(mOctree);
699
700	// possible two cameras (one for culling, one for rendering)
701	mHierarchyInterface->InitTraversal(mCameraInProgress,
702	mCullCamera ? getCamera("CullCamera") : NULL,
703	mLeavePassesInQueue);
704
705	//std::stringstream d; d << "leave passes in queue: " << mLeavePassesInQueue;LogManager::getSingleton().logMessage(d.str());
706	}
707	//-----------------------------------------------------------------------
708	OctreeHierarchyInterface *VisibilityTerrainSceneManager::GetHierarchyInterface()
709	{
710	return mHierarchyInterface;
711	}
712	//-----------------------------------------------------------------------
713	void VisibilityTerrainSceneManager::endFrame()
714	{
715	TerrainRenderable::ResetRenderLevelIndex();
716	}
717	//-----------------------------------------------------------------------
718	/void VisibilityTerrainSceneManager::renderBasicQueueGroupObjects(RenderQueueGroup pGroup)
719	{
720	// Basic render loop: Iterate through priorities
721	RenderQueueGroup::PriorityMapIterator groupIt = pGroup->getIterator();
722
723	while (groupIt.hasMoreElements())
724	{
725	RenderPriorityGroup* pPriorityGrp = groupIt.getNext();
726
727	// Sort the queue first
728	pPriorityGrp->sort(mCameraInProgress);
729
730	// Do solids
731	// TODO: render other solid passes for shadows
732	renderObjects(pPriorityGrp->_getSolidPassesNoShadows(), true);
733
734	// do solid passes no shadows if addititive stencil shadows
735	if (mSavedShadowTechnique == SHADOWTYPE_STENCIL_ADDITIVE)
736	renderObjects(pPriorityGrp->_getSolidPassesNoShadows(), true);
737
738	// Do transparents
739	renderObjects(pPriorityGrp->_getTransparentPasses(), true);
740
741
742	}// for each priority
743	}
744	*/
745	//-----------------------------------------------------------------------
746	/*
747	Entity* VisibilityTerrainSceneManager::createEntity(const String& entityName,
748	const String& meshName)
749	{
750	Entity *ent = SceneManager::createEntity(entityName, meshName);
751
752	for (int i = 0; i < (int)ent->getNumSubEntities(); ++i)
753	{
754	ent->getSubEntity(i)->setId(mCurrentEntityId);
755	}
756
757	// increase counter of entity id values
758	++ mCurrentEntityId;
759
760	return ent;
761	}
762	*/
763	} // namespace Ogre

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