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source: GTP/trunk/Lib/Vis/OnlineCullingCHC/OGRE/src/OgreVisibilityTerrainSceneManager.cpp @ 726

Revision 726, 26.8 KB checked in by mattausch, 18 years ago (diff)
improved performance of TerrainSceneManager? revisit octreescenemanager

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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	// normal terrain rendering
14	const static NORMAL_RENDER_HACK = false;
15
16	namespace Ogre {
17
18	//-----------------------------------------------------------------------
19	VisibilityTerrainSceneManager::VisibilityTerrainSceneManager(
20	GtpVisibility::VisibilityManager *visManager):
21	TerrainSceneManager(),
22	mVisibilityManager(visManager),
23	mShowVisualization(false),
24	mRenderNodesForViz(false),
25	mRenderNodesContentForViz(false),
26	mVisualizeCulledNodes(false),
27	mLeavePassesInQueue(0),
28	mDelayRenderTransparents(true),
29	mUseDepthPass(false),
30	mIsDepthPassPhase(false),
31	mUseItemBuffer(false),
32	mIsItemBufferPhase(false),
33	mCurrentEntityId(1),
34	mEnableDepthWrite(true),
35	mSkipTransparents(false),
36	mRenderTransparentsForItemBuffer(true),
37	mExecuteVertexProgramForAllPasses(false),
38	mIsHierarchicalCulling(false)
39	{
40	mHierarchyInterface = new OctreeHierarchyInterface(this, mDestRenderSystem);
41
42	if (0)
43	{
44	mDisplayNodes = true;
45	mShowBoundingBoxes = true;
46	mShowBoxes = true;
47	}
48
49	// TODO: set maxdepth to reasonable value
50	mMaxDepth = 50;
51	}
52	//-----------------------------------------------------------------------
53	void VisibilityTerrainSceneManager::InitDepthPass()
54	{
55	MaterialPtr depthMat = MaterialManager::getSingleton().getByName("Visibility/DepthPass");
56
57	if (depthMat.isNull())
58	{
59	depthMat = MaterialManager::getSingleton().create(
60	"Visibility/DepthPass",
61	ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME);
62
63	mDepthPass = depthMat->getTechnique(0)->getPass(0);
64
65	mDepthPass->setColourWriteEnabled(false);
66	mDepthPass->setDepthWriteEnabled(true);
67	mDepthPass->setLightingEnabled(false);
68	//mDepthPass->setDepthCheckEnabled(true);
69	}
70	else
71	{
72	mDepthPass = depthMat->getTechnique(0)->getPass(0);
73	}
74	}
75	//-----------------------------------------------------------------------
76	VisibilityTerrainSceneManager::~VisibilityTerrainSceneManager()
77	{
78	OGRE_DELETE(mHierarchyInterface);
79	}
80	//-----------------------------------------------------------------------
81	void VisibilityTerrainSceneManager::InitItemBufferPass()
82	{
83	MaterialPtr itemBufferMat = MaterialManager::getSingleton().
84	getByName("Visibility/ItemBufferPass");
85
86	if (itemBufferMat.isNull())
87	{
88	// Init
89	itemBufferMat = MaterialManager::getSingleton().create("Visibility/ItemBufferPass",
90	ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME);
91
92	mItemBufferPass = itemBufferMat->getTechnique(0)->getPass(0);
93	mItemBufferPass->setColourWriteEnabled(true);
94	mItemBufferPass->setDepthWriteEnabled(true);
95	mItemBufferPass->setLightingEnabled(true);
96	//mItemBufferPass->setLightingEnabled(false);
97	}
98	else
99	{
100	mItemBufferPass = itemBufferMat->getTechnique(0)->getPass(0);
101	}
102	//mItemBufferPass->setAmbient(1, 1, 0);
103	}
104	//-----------------------------------------------------------------------
105	void VisibilityTerrainSceneManager::PrepareVisualization(Camera *cam)
106	{
107	// add player camera for visualization purpose
108	try
109	{
110	Camera *c;
111	if ((c = getCamera("PlayerCam")) != NULL)
112	{
113	getRenderQueue()->addRenderable(c);
114	}
115	}
116	catch (...)
117	{
118	// ignore
119	}
120	// add bounding boxes of rendered objects
121	for (BoxList::iterator it = mBoxes.begin(); it != mBoxes.end(); ++it)
122	{
123	getRenderQueue()->addRenderable(*it);
124	}
125
126	if (mRenderNodesForViz \|\| mRenderNodesContentForViz)
127	{
128	// HACK: change node material so it is better suited for visualization
129	MaterialPtr nodeMat = MaterialManager::getSingleton().getByName("Core/NodeMaterial");
130	nodeMat->setAmbient(1, 1, 0);
131	nodeMat->setLightingEnabled(true);
132	nodeMat->getTechnique(0)->getPass(0)->removeAllTextureUnitStates();
133
134	for (NodeList::iterator it = mVisible.begin(); it != mVisible.end(); ++it)
135	{
136	if (mRenderNodesForViz)
137	{
138	// render the leaf nodes
139	if (((it)->numAttachedObjects() > 0) && ((it)->numChildren() == 0) &&
140	(*it)->getAttachedObject(0)->getMovableType() == "Entity")
141	{
142	getRenderQueue()->addRenderable((*it));
143	}
144
145	// addbounding boxes instead of node itself
146	//(*it)->_addBoundingBoxToQueue(getRenderQueue());
147	}
148	if (mRenderNodesContentForViz)
149	{
150	(*it)->_addToRenderQueue(cam, getRenderQueue(), false);
151	}
152	}
153	}
154	}
155	//-----------------------------------------------------------------------
156	Pass VisibilityTerrainSceneManager::setPass(Pass pass)
157	{
158	if (NORMAL_RENDER_HACK)
159	{
160	return SceneManager::setPass(pass);
161	}
162
163	// TODO: setting vertex program is not efficient
164	//Pass *usedPass = ((mIsDepthPassPhase && !pass->hasVertexProgram()) ? mDepthPass : pass);
165
166	// set depth fill pass if we currently do not make an aabb occlusion query
167	const bool useDepthPass =
168	(mIsDepthPassPhase && !mHierarchyInterface->IsBoundingBoxQuery());
169
170	Pass *usedPass = useDepthPass ? mDepthPass : pass;
171
172
173	const IlluminationRenderStage savedStage = mIlluminationStage;
174
175	// set illumination stage to NONE so no shadow material is used
176	// for depth pass or for occlusion query
177	if (mIsDepthPassPhase \|\| mHierarchyInterface->IsBoundingBoxQuery())
178	{
179	mIlluminationStage = IRS_NONE;
180	}
181
182	// --- set vertex program of current pass in order to set correct depth
183	if (mExecuteVertexProgramForAllPasses &&
184	mIsDepthPassPhase &&
185	pass->hasVertexProgram())
186	{
187	// add vertex program of current pass to depth pass
188	mDepthPass->setVertexProgram(pass->getVertexProgramName());
189
190	if (mDepthPass->hasVertexProgram())
191	{
192	const GpuProgramPtr& prg = mDepthPass->getVertexProgram();
193	// Load this program if not done already
194	if (!prg->isLoaded())
195	prg->load();
196	// Copy params
197	mDepthPass->setVertexProgramParameters(pass->getVertexProgramParameters());
198	}
199	}
200	else if (mDepthPass->hasVertexProgram()) // reset vertex program
201	{
202	mDepthPass->setVertexProgram("");
203	}
204
205	// save old depth write: needed for item buffer
206	const bool IsDepthWrite = usedPass->getDepthWriteEnabled();
207
208	// global option which enables / disables depth writes
209	if (!mEnableDepthWrite)
210	{
211	usedPass->setDepthWriteEnabled(false);
212	}
213
214
215	//-- set actual pass here
216	Pass *result = SceneManager::setPass(usedPass);
217
218
219	// reset depth write
220	if (!mEnableDepthWrite)
221	{
222	usedPass->setDepthWriteEnabled(IsDepthWrite);
223	}
224
225	// reset illumination stage
226	mIlluminationStage = savedStage;
227
228	return result;
229	}
230	//-----------------------------------------------------------------------
231	void VisibilityTerrainSceneManager::_findVisibleObjects(Camera* cam,
232	bool onlyShadowCasters)
233	{
234	if (NORMAL_RENDER_HACK)
235	{
236	TerrainSceneManager::_findVisibleObjects(cam, onlyShadowCasters);
237	return;
238	}
239
240	//-- show visible scene nodes and octree bounding boxes from last frame
241	if (mShowVisualization)
242	{
243	PrepareVisualization(cam);
244	}
245	else
246	{
247	// for hierarchical culling, we interleave identification
248	// and rendering of objects in _renderVisibibleObjects
249
250	// for the shadow pass we use only standard rendering
251	// because of low occlusion
252	if (mShadowTechnique == SHADOWTYPE_TEXTURE_MODULATIVE &&
253	mIlluminationStage == IRS_RENDER_TO_TEXTURE)
254	{
255	TerrainSceneManager::_findVisibleObjects(cam, onlyShadowCasters);
256	}
257
258	// only shadow casters will be rendered in shadow texture pass
259	if (0) mHierarchyInterface->SetOnlyShadowCasters(onlyShadowCasters);
260	}
261
262
263	// -- delete lists stored for visualization
264	mVisible.clear();
265	mBoxes.clear();
266	}
267	//-----------------------------------------------------------------------
268	void VisibilityTerrainSceneManager::_renderVisibleObjects()
269	{
270	if (NORMAL_RENDER_HACK)
271	{
272	TerrainSceneManager::_renderVisibleObjects();
273
274	return;
275	}
276
277	InitDepthPass(); // create material for depth pass
278	InitItemBufferPass(); // create material for item buffer pass
279
280	// save ambient light to reset later
281	ColourValue savedAmbient = mAmbientLight;
282
283	//-- apply standard rendering for some modes (e.g., visualization, shadow pass)
284
285	if (mShowVisualization \|\|
286	(mShadowTechnique == SHADOWTYPE_TEXTURE_MODULATIVE &&
287	mIlluminationStage == IRS_RENDER_TO_TEXTURE))
288	{
289	IlluminationRenderStage savedStage = mIlluminationStage;
290
291	if (mShowVisualization)
292	// disable illumination stage to prevent rendering shadows
293	mIlluminationStage = IRS_NONE;
294
295	// standard rendering for shadow maps because of performance
296	TerrainSceneManager::_renderVisibleObjects();
297
298	mIlluminationStage = savedStage;
299	}
300	else //-- the hierarchical culling algorithm
301	{
302	// from TerrainSceneManager
303	mDestRenderSystem -> setLightingEnabled(false);
304
305	// don't render backgrounds for item buffer
306	if (mUseItemBuffer)
307	{
308	clearSpecialCaseRenderQueues();
309	getRenderQueue()->clear();
310	}
311
312	//-- hierarchical culling
313	// the objects of different layers (e.g., background, scene,
314	// overlay) must be identified and rendered one after another
315
316	//-- render all early skies
317	clearSpecialCaseRenderQueues();
318	addSpecialCaseRenderQueue(RENDER_QUEUE_BACKGROUND);
319	addSpecialCaseRenderQueue(RENDER_QUEUE_SKIES_EARLY);
320	setSpecialCaseRenderQueueMode(SceneManager::SCRQM_INCLUDE);
321
322	OctreeSceneManager::_renderVisibleObjects();
323	/////////////////////////////////////////////////
324
325	#ifdef GTP_VISIBILITY_MODIFIED_OGRE
326	// delete previously rendered content
327	_deleteRenderedQueueGroups();
328	#endif
329
330	//-- prepare queue for visible objects (i.e., all but overlay and skies late)
331	clearSpecialCaseRenderQueues();
332	addSpecialCaseRenderQueue(RENDER_QUEUE_SKIES_LATE);
333	addSpecialCaseRenderQueue(RENDER_QUEUE_OVERLAY);
334
335	// exclude this queues from hierarchical rendering
336	setSpecialCaseRenderQueueMode(SceneManager::SCRQM_EXCLUDE);
337
338	// set all necessary parameters for
339	// hierarchical visibility culling and rendering
340	InitVisibilityCulling(mCameraInProgress);
341
342	/**
343	* the hierarchical culling algorithm
344	* for depth pass: we just find objects and update depth buffer
345	* for "delayed" rendering: we render some passes afterwards
346	* e.g., transparents, because they need front-to-back sorting
347	**/
348
349	mVisibilityManager->ApplyVisibilityCulling();
350
351	// delete remaining renderables from queue:
352	// all which are not in mLeavePassesInQueue)
353	#ifdef GTP_VISIBILITY_MODIFIED_OGRE
354	_deleteRenderedQueueGroups(mLeavePassesInQueue);
355	#endif
356
357	//-- reset parameters
358	mIsDepthPassPhase = false;
359	mIsItemBufferPhase = false;
360	mSkipTransparents = false;
361	mLeavePassesInQueue = 0;
362
363	#if 1
364	// add visible nodes found by the visibility culling algorithm
365	if (mUseDepthPass)
366	{
367	NodeList::const_iterator it, it_end = mVisible.end();
368
369	//getRenderQueue()->clear();
370	for (it = mVisible.begin(); it != it_end; ++ it)
371	{
372	(*it)->_addToRenderQueue(mCameraInProgress, getRenderQueue(), false);
373	}
374	}
375	#endif
376	//-- now we can render all remaining queue objects
377	//-- used for depth pass, transparents, overlay
378	clearSpecialCaseRenderQueues();
379
380	OctreeSceneManager::_renderVisibleObjects();
381	}
382
383	// HACK: set the new render level index, important to avoid cracks
384	// in terrain caused by LOD
385	TerrainRenderable::NextRenderLevelIndex();
386
387	// reset ambient light
388	setAmbientLight(savedAmbient);
389
390	getRenderQueue()->clear(); // finally clear render queue
391	if (0) OGRE_DELETE(mRenderQueue); // HACK: should rather only be cleared ...
392
393	if (0) WriteLog(); // write out stats
394	}
395
396	//-----------------------------------------------------------------------
397	void VisibilityTerrainSceneManager::_updateSceneGraph(Camera* cam)
398	{
399	if (NORMAL_RENDER_HACK)
400	{
401	TerrainSceneManager::_updateSceneGraph(cam);
402	return;
403	}
404
405	mVisibilityManager->GetCullingManager()->SetHierarchyInterface(mHierarchyInterface);
406	mHierarchyInterface->SetRenderSystem(mDestRenderSystem);
407
408	TerrainSceneManager::_updateSceneGraph(cam);
409	}
410	//-----------------------------------------------------------------------
411	bool VisibilityTerrainSceneManager::setOption(const String & key, const void * val)
412	{
413	if (key == "UseDepthPass")
414	{
415	mUseDepthPass = (static_cast<const bool >(val));
416	return true;
417	}
418	if (key == "PrepareVisualization")
419	{
420	mShowVisualization = (static_cast<const bool >(val));
421	return true;
422	}
423	if (key == "RenderNodesForViz")
424	{
425	mRenderNodesForViz = (static_cast<const bool >(val));
426	return true;
427	}
428	if (key == "RenderNodesContentForViz")
429	{
430	mRenderNodesContentForViz = (static_cast<const bool >(val));
431	return true;
432	}
433	if (key == "SkyBoxEnabled")
434	{
435	mSkyBoxEnabled = (static_cast<const bool >(val));
436	return true;
437	}
438	if (key == "SkyPlaneEnabled")
439	{
440	mSkyPlaneEnabled = (static_cast<const bool >(val));
441	return true;
442	}
443	if (key == "SkyDomeEnabled")
444	{
445	mSkyDomeEnabled = (static_cast<const bool >(val));
446	return true;
447	}
448	if (key == "VisualizeCulledNodes")
449	{
450	mVisualizeCulledNodes = (static_cast<const bool >(val));
451	return true;
452	}
453	if (key == "DelayRenderTransparents")
454	{
455	mDelayRenderTransparents = (static_cast<const bool >(val));
456	return true;
457	}
458
459	if (key == "DepthWrite")
460	{
461	mEnableDepthWrite = (static_cast<const bool >(val));
462	return true;
463	}
464	if (key == "UseItemBuffer")
465	{
466	mUseItemBuffer = (static_cast<const bool >(val));
467	return true;
468	}
469	if (key == "ExecuteVertexProgramForAllPasses")
470	{
471	mExecuteVertexProgramForAllPasses = (static_cast<const bool >(val));
472	return true;
473	}
474	if (key == "RenderTransparentsForItemBuffer")
475	{
476	mRenderTransparentsForItemBuffer = (static_cast<const bool >(val));
477	return true;
478	}
479	if (key == "NodeVizScale")
480	{
481	OctreeNode::setVizScale(static_cast<const float >(val));
482	return true;
483	}
484
485	if (key == "UseArbQueries")
486	{
487	bool useArbQueries = (static_cast<const bool >(val));
488
489	if (useArbQueries)
490	{
491	mHierarchyInterface->DeleteQueries();
492	mDestRenderSystem->setConfigOption("ArbQueries", "Yes");
493	}
494	else
495	{
496	mHierarchyInterface->DeleteQueries();
497	mDestRenderSystem->setConfigOption("ArbQueries", "No");
498	}
499	}
500	return VisibilityOptionsManager(mVisibilityManager, mHierarchyInterface).
501	setOption(key, val) \|\| TerrainSceneManager::setOption(key, val);
502	}
503	//-----------------------------------------------------------------------
504	bool VisibilityTerrainSceneManager::getOption(const String & key, void *val)
505	{
506	if (key == "NumHierarchyNodes")
507	{
508	* static_cast<unsigned int *>(val) = (unsigned int)mNumOctants;
509	return true;
510	}
511
512	return VisibilityOptionsManager(mVisibilityManager, mHierarchyInterface).
513	getOption(key, val) && TerrainSceneManager::getOption(key, val);
514	}
515	//-----------------------------------------------------------------------
516	bool VisibilityTerrainSceneManager::getOptionValues(const String & key,
517	StringVector &refValueList)
518	{
519	return TerrainSceneManager::getOptionValues( key, refValueList);
520	}
521	//-----------------------------------------------------------------------
522	bool VisibilityTerrainSceneManager::getOptionKeys(StringVector & refKeys)
523	{
524	return VisibilityOptionsManager(mVisibilityManager, mHierarchyInterface).
525	getOptionKeys(refKeys) \|\| TerrainSceneManager::getOptionKeys(refKeys);
526	}
527	//-----------------------------------------------------------------------
528	void VisibilityTerrainSceneManager::setVisibilityManager(GtpVisibility::
529	VisibilityManager *visManager)
530	{
531	mVisibilityManager = visManager;
532	}
533	//-----------------------------------------------------------------------
534	GtpVisibility::VisibilityManager *VisibilityTerrainSceneManager::getVisibilityManager()
535	{
536	return mVisibilityManager;
537	}
538	//-----------------------------------------------------------------------
539	void VisibilityTerrainSceneManager::WriteLog()
540	{
541	std::stringstream d;
542
543	d << "Depth pass: " << StringConverter::toString(mUseDepthPass) << ", "
544	<< "Delay transparents: " << StringConverter::toString(mDelayRenderTransparents) << ", "
545	<< "Use optimization: " << StringConverter::toString(mHierarchyInterface->GetTestGeometryForVisibleLeaves()) << ", "
546	<< "Algorithm type: " << mVisibilityManager->GetCullingManagerType() << ", "
547	<< "Hierarchy nodes: " << mNumOctants << ", "
548	<< "Traversed nodes: " << mHierarchyInterface->GetNumTraversedNodes() << ", "
549	<< "Rendered nodes: " << mHierarchyInterface->GetNumRenderedNodes() << ", "
550	<< "Query culled nodes: " << mVisibilityManager->GetCullingManager()->GetNumQueryCulledNodes() << ", "
551	<< "Frustum culled nodes: " << mVisibilityManager->GetCullingManager()->GetNumFrustumCulledNodes() << ", "
552	<< "Queries issued: " << mVisibilityManager->GetCullingManager()->GetNumQueriesIssued() << ", "
553	<< "Found objects: " << (int)mVisible.size() << "\n";
554
555	LogManager::getSingleton().logMessage(d.str());
556	}
557	//-----------------------------------------------------------------------
558	void VisibilityTerrainSceneManager::renderObjects(
559	const RenderPriorityGroup::TransparentRenderablePassList& objs,
560	bool doLightIteration,
561	const LightList* manualLightList)
562	{
563	// for correct rendering, transparents must be rendered after hierarchical culling
564	// => do nothing
565	if (NORMAL_RENDER_HACK \|\| !mSkipTransparents)
566	{
567	SceneManager::renderObjects(objs, doLightIteration, manualLightList);
568	}
569	}
570	//-----------------------------------------------------------------------
571	bool VisibilityTerrainSceneManager::validatePassForRendering(Pass* pass)
572	{
573	if (NORMAL_RENDER_HACK)
574	{
575	return SceneManager::validatePassForRendering(pass);
576	}
577
578	// skip all but first pass if we are doing the depth pass
579	if ((mIsDepthPassPhase \|\| mIsItemBufferPhase) && (pass->getIndex() > 0))
580	{
581	return false;
582	}
583	// all but first pass
584	/*else if ((!mIsDepthPassPhase \|\| mIsItemBufferPhase) && (pass->getIndex() != 0))
585	{
586	return false;
587	}*/
588
589	return SceneManager::validatePassForRendering(pass);
590	}
591	//-----------------------------------------------------------------------
592	void VisibilityTerrainSceneManager::renderQueueGroupObjects(RenderQueueGroup* pGroup)
593	{
594	if (NORMAL_RENDER_HACK \|\| !mIsItemBufferPhase)
595	{
596	SceneManager::renderQueueGroupObjects(pGroup);
597	return;
598	}
599
600	//-- item buffer: render objects using false colors
601
602	// Iterate through priorities
603	RenderQueueGroup::PriorityMapIterator groupIt = pGroup->getIterator();
604
605	while (groupIt.hasMoreElements())
606	{
607	RenderItemBuffer(groupIt.getNext());
608	}
609	}
610	//-----------------------------------------------------------------------
611	void VisibilityTerrainSceneManager::RenderItemBuffer(RenderPriorityGroup* pGroup)
612	{
613	// Do solids
614	RenderPriorityGroup::SolidRenderablePassMap solidObjs = pGroup->_getSolidPasses();
615
616	// ----- SOLIDS LOOP -----
617	RenderPriorityGroup::SolidRenderablePassMap::const_iterator ipass, ipassend;
618	ipassend = solidObjs.end();
619
620	for (ipass = solidObjs.begin(); ipass != ipassend; ++ipass)
621	{
622	// Fast bypass if this group is now empty
623	if (ipass->second->empty())
624	continue;
625
626	// Render only first pass of renderable as false color
627	if (ipass->first->getIndex() > 0)
628	continue;
629
630	RenderPriorityGroup::RenderableList* rendList = ipass->second;
631
632	RenderPriorityGroup::RenderableList::const_iterator irend, irendend;
633	irendend = rendList->end();
634
635	for (irend = rendList->begin(); irend != irendend; ++irend)
636	{
637	if (0)
638	{
639	std::stringstream d; d << "itembuffer, pass name: " <<
640	ipass->first->getParent()->getParent()->getName();
641	LogManager::getSingleton().logMessage(d.str());
642	}
643
644	RenderSingleObjectForItemBuffer(*irend, ipass->first);
645	}
646	}
647
648	//-- TRANSPARENT LOOP: must be handled differently from solids
649
650	// transparents are treated either as solids or completely discarded
651	if (mRenderTransparentsForItemBuffer)
652	{
653	RenderPriorityGroup::TransparentRenderablePassList transpObjs =
654	pGroup->_getTransparentPasses();
655	RenderPriorityGroup::TransparentRenderablePassList::const_iterator
656	itrans, itransend;
657
658	itransend = transpObjs.end();
659	for (itrans = transpObjs.begin(); itrans != itransend; ++itrans)
660	{
661	// like for solids, render only first pass
662	if (itrans->pass->getIndex() == 0)
663	{
664	RenderSingleObjectForItemBuffer(itrans->renderable, itrans->pass);
665	}
666	}
667	}
668	}
669	//-----------------------------------------------------------------------
670	void VisibilityTerrainSceneManager::RenderSingleObjectForItemBuffer(Renderable rend, Pass pass)
671	{
672	static LightList nullLightList;
673
674	int col[4];
675
676	// -- create color code out of object id
677	col[0] = (rend->getId() >> 16) & 255;
678	col[1] = (rend->getId() >> 8) & 255;
679	col[2] = rend->getId() & 255;
680	// col[3] = 255;
681
682	//mDestRenderSystem->setColour(col[0], col[1], col[2], col[3]);
683
684	mItemBufferPass->setAmbient(ColourValue(col[0] / 255.0f,
685	col[1] / 255.0f,
686	col[2] / 255.0f, 1));
687
688	// set vertex program of current pass
689	if (mExecuteVertexProgramForAllPasses && pass->hasVertexProgram())
690	{
691	mItemBufferPass->setVertexProgram(pass->getVertexProgramName());
692
693	if (mItemBufferPass->hasVertexProgram())
694	{
695	const GpuProgramPtr& prg = mItemBufferPass->getVertexProgram();
696	// Load this program if not done already
697	if (!prg->isLoaded())
698	prg->load();
699	// Copy params
700	mItemBufferPass->setVertexProgramParameters(pass->getVertexProgramParameters());
701	}
702	}
703	else if (mItemBufferPass->hasVertexProgram())
704	{
705	mItemBufferPass->setVertexProgram("");
706	}
707
708	Pass *usedPass = setPass(mItemBufferPass);
709
710
711	// render a single object, this will set up auto params if required
712	renderSingleObject(rend, usedPass, false, &nullLightList);
713	}
714	//-----------------------------------------------------------------------
715	GtpVisibility::VisibilityManager *VisibilityTerrainSceneManager::GetVisibilityManager()
716	{
717	return mVisibilityManager;
718	}
719	//-----------------------------------------------------------------------
720	void VisibilityTerrainSceneManager::InitVisibilityCulling(Camera *cam)
721	{
722	// reset culling manager stats
723	mVisibilityManager->GetCullingManager()->InitFrame(mVisualizeCulledNodes);
724
725	// set depth pass flag before rendering
726	mIsDepthPassPhase = mUseDepthPass;
727
728	// item buffer needs full ambient lighting to use item colors as unique id
729	if (mUseItemBuffer)
730	{
731	mIsItemBufferPhase = true;
732	setAmbientLight(ColourValue(1,1,1,1));
733	}
734
735
736	// set passes which are stored in render queue
737	// for rendering AFTER hierarchical culling, i.e., passes which need
738	// a special rendering order
739	mLeavePassesInQueue = 0;
740
741	if (!mUseDepthPass && !mUseItemBuffer)
742	{
743	if (mShadowTechnique == SHADOWTYPE_STENCIL_ADDITIVE)
744	{
745	// TODO: remove this pass because it should be processed during hierarchical culling
746	//mLeavePassesInQueue \|= RenderPriorityGroup::SOLID_PASSES_NOSHADOW;
747
748	mLeavePassesInQueue \|= RenderPriorityGroup::SOLID_PASSES_DECAL;
749	mLeavePassesInQueue \|= RenderPriorityGroup::SOLID_PASSES_DIFFUSE_SPECULAR;
750	mLeavePassesInQueue \|= RenderPriorityGroup::TRANSPARENT_PASSES;
751
752	// just render ambient stuff
753	mIlluminationStage = IRS_AMBIENT;
754	}
755
756	if (mShadowTechnique == SHADOWTYPE_STENCIL_MODULATIVE)
757	{
758	mLeavePassesInQueue \|= RenderPriorityGroup::SOLID_PASSES_NOSHADOW;
759	mLeavePassesInQueue \|= RenderPriorityGroup::TRANSPARENT_PASSES;
760	}
761
762	// transparents should be rendered after hierarchical culling to
763	// provide front-to-back ordering
764	if (mDelayRenderTransparents)
765	{
766	mLeavePassesInQueue \|= RenderPriorityGroup::TRANSPARENT_PASSES;
767	}
768	}
769
770	// skip rendering transparents during the hierarchical culling
771	// (because they will be rendered afterwards)
772	mSkipTransparents =
773	(mIsDepthPassPhase \|\| (mLeavePassesInQueue & RenderPriorityGroup::TRANSPARENT_PASSES));
774
775	// -- initialise interface for rendering traversal of the hierarchy
776	mHierarchyInterface->SetHierarchyRoot(mOctree);
777
778	// possible two cameras (one for culling, one for rendering)
779	mHierarchyInterface->InitTraversal(mCameraInProgress,
780	mCullCamera ? getCamera("CullCamera") : NULL,
781	mLeavePassesInQueue);
782
783	//std::stringstream d; d << "leave passes in queue: " << mLeavePassesInQueue;LogManager::getSingleton().logMessage(d.str());
784	}
785	//-----------------------------------------------------------------------
786	OctreeHierarchyInterface *VisibilityTerrainSceneManager::GetHierarchyInterface()
787	{
788	return mHierarchyInterface;
789	}
790	//-----------------------------------------------------------------------
791	void VisibilityTerrainSceneManager::endFrame()
792	{
793	TerrainRenderable::ResetRenderLevelIndex();
794	}
795	//-----------------------------------------------------------------------
796	Entity* VisibilityTerrainSceneManager::createEntity(const String& entityName,
797	const String& meshName)
798	{
799	Entity *ent = SceneManager::createEntity(entityName, meshName);
800
801	for (int i = 0; i < (int)ent->getNumSubEntities(); ++i)
802	{
803	ent->getSubEntity(i)->setId(mCurrentEntityId);
804	}
805
806	// increase counter of entity id values
807	++ mCurrentEntityId;
808
809	return ent;
810	}
811	//-----------------------------------------------------------------------
812	void VisibilityTerrainSceneManager::renderAdditiveStencilShadowedQueueGroupObjects(
813	RenderQueueGroup* pGroup)
814	{
815	// only render solid passes during hierarchical culling
816	if (mIsHierarchicalCulling)
817	{
818	RenderQueueGroup::PriorityMapIterator groupIt = pGroup->getIterator();
819	LightList lightList;
820
821	while (groupIt.hasMoreElements())
822	{
823	RenderPriorityGroup* pPriorityGrp = groupIt.getNext();
824
825	// Sort the queue first
826	pPriorityGrp->sort(mCameraInProgress);
827
828	// Clear light list
829	lightList.clear();
830
831	// Render all the ambient passes first, no light iteration, no lights
832	mIlluminationStage = IRS_AMBIENT;
833
834	OctreeSceneManager::renderObjects(pPriorityGrp->_getSolidPasses(), false, &lightList);
835	// Also render any objects which have receive shadows disabled
836	OctreeSceneManager::renderObjects(pPriorityGrp->_getSolidPassesNoShadow(), true);
837	}
838	}
839	else
840	{
841	OctreeSceneManager::renderAdditiveStencilShadowedQueueGroupObjects(pGroup);
842	}
843	}
844	//-----------------------------------------------------------------------
845	void VisibilityTerrainSceneManager::renderModulativeStencilShadowedQueueGroupObjects(
846	RenderQueueGroup* pGroup)
847	{
848	if (mIsHierarchicalCulling)
849	{
850	// Iterate through priorities
851	RenderQueueGroup::PriorityMapIterator groupIt = pGroup->getIterator();
852
853	while (groupIt.hasMoreElements())
854	{
855	RenderPriorityGroup* pPriorityGrp = groupIt.getNext();
856
857	// Sort the queue first
858	pPriorityGrp->sort(mCameraInProgress);
859
860	// Do (shadowable) solids
861	OctreeSceneManager::renderObjects(pPriorityGrp->_getSolidPasses(), true);
862	}
863	}
864	else
865	{
866	SceneManager::renderModulativeStencilShadowedQueueGroupObjects(pGroup);
867	}
868	}
869
870	} // namespace Ogre

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