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source: GTP/trunk/Lib/Vis/OnlineCullingCHC/OGRE/src/OgreVisibilityTerrainSceneManager.cpp @ 868

Revision 868, 28.2 KB checked in by mattausch, 18 years ago (diff)
fitting objects to bb, debug

Line
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	#include <OgreConfigFile.h>
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	mDepthPass->setColourWriteEnabled(false);
65	mDepthPass->setDepthWriteEnabled(true);
66	mDepthPass->setLightingEnabled(false);
67	}
68	else
69	{
70	mDepthPass = depthMat->getTechnique(0)->getPass(0);
71	}
72	}
73	//-----------------------------------------------------------------------
74	VisibilityTerrainSceneManager::~VisibilityTerrainSceneManager()
75	{
76	OGRE_DELETE(mHierarchyInterface);
77	}
78	//-----------------------------------------------------------------------
79	void VisibilityTerrainSceneManager::InitItemBufferPass()
80	{
81	MaterialPtr itemBufferMat = MaterialManager::getSingleton().
82	getByName("Visibility/ItemBufferPass");
83
84	if (itemBufferMat.isNull())
85	{
86	// Init
87	itemBufferMat = MaterialManager::getSingleton().create("Visibility/ItemBufferPass",
88	ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME);
89
90	mItemBufferPass = itemBufferMat->getTechnique(0)->getPass(0);
91	mItemBufferPass->setColourWriteEnabled(true);
92	mItemBufferPass->setDepthWriteEnabled(true);
93	mItemBufferPass->setLightingEnabled(true);
94	//mItemBufferPass->setLightingEnabled(false);
95	}
96	else
97	{
98	mItemBufferPass = itemBufferMat->getTechnique(0)->getPass(0);
99	}
100	//mItemBufferPass->setAmbient(1, 1, 0);
101	}
102	//-----------------------------------------------------------------------
103	void VisibilityTerrainSceneManager::PrepareVisualization(Camera *cam)
104	{
105	// add player camera for visualization purpose
106	try
107	{
108	Camera *c;
109	if ((c = getCamera("PlayerCam")) != NULL)
110	{
111	getRenderQueue()->addRenderable(c);
112	}
113	}
114	catch (...)
115	{
116	// ignore
117	}
118	// add bounding boxes of rendered objects
119	for (BoxList::iterator it = mBoxes.begin(); it != mBoxes.end(); ++it)
120	{
121	getRenderQueue()->addRenderable(*it);
122	}
123
124	if (mRenderNodesForViz \|\| mRenderNodesContentForViz)
125	{
126	// HACK: change node material so it is better suited for visualization
127	MaterialPtr nodeMat = MaterialManager::getSingleton().getByName("Core/NodeMaterial");
128	nodeMat->setAmbient(1, 1, 0);
129	nodeMat->setLightingEnabled(true);
130	nodeMat->getTechnique(0)->getPass(0)->removeAllTextureUnitStates();
131
132	for (NodeList::iterator it = mVisible.begin(); it != mVisible.end(); ++it)
133	{
134	if (mRenderNodesForViz)
135	{
136	// render the leaf nodes
137	if (((it)->numAttachedObjects() > 0) && ((it)->numChildren() == 0) &&
138	(*it)->getAttachedObject(0)->getMovableType() == "Entity")
139	{
140	getRenderQueue()->addRenderable((*it));
141	}
142
143	// addbounding boxes instead of node itself
144	//(*it)->_addBoundingBoxToQueue(getRenderQueue());
145	}
146	if (mRenderNodesContentForViz)
147	{
148	(*it)->_addToRenderQueue(cam, getRenderQueue(), false);
149	}
150	}
151	}
152	}
153	//-----------------------------------------------------------------------
154	Pass VisibilityTerrainSceneManager::setPass(Pass pass)
155	{
156	if (NORMAL_RENDER_HACK)
157	{
158	return SceneManager::setPass(pass);
159	}
160
161	// TODO: setting vertex program is not efficient
162	//Pass *usedPass = ((mIsDepthPassPhase && !pass->hasVertexProgram()) ? mDepthPass : pass);
163
164	// set depth fill pass if we currently do not make an aabb occlusion query
165	const bool useDepthPass =
166	(mIsDepthPassPhase && !mHierarchyInterface->IsBoundingBoxQuery());
167
168	Pass *usedPass = useDepthPass ? mDepthPass : pass;
169
170
171	const IlluminationRenderStage savedStage = mIlluminationStage;
172
173	// set illumination stage to NONE so no shadow material is used
174	// for depth pass or for occlusion query
175	if (mIsDepthPassPhase \|\| mHierarchyInterface->IsBoundingBoxQuery())
176	{
177	mIlluminationStage = IRS_NONE;
178	}
179
180	// --- set vertex program of current pass in order to set correct depth
181	if (mExecuteVertexProgramForAllPasses &&
182	mIsDepthPassPhase &&
183	pass->hasVertexProgram())
184	{
185	// add vertex program of current pass to depth pass
186	mDepthPass->setVertexProgram(pass->getVertexProgramName());
187
188	if (mDepthPass->hasVertexProgram())
189	{
190	const GpuProgramPtr& prg = mDepthPass->getVertexProgram();
191	// Load this program if not done already
192	if (!prg->isLoaded())
193	prg->load();
194	// Copy params
195	mDepthPass->setVertexProgramParameters(pass->getVertexProgramParameters());
196	}
197	}
198	else if (mDepthPass->hasVertexProgram()) // reset vertex program
199	{
200	mDepthPass->setVertexProgram("");
201	}
202
203	// save old depth write: needed for item buffer
204	const bool IsDepthWrite = usedPass->getDepthWriteEnabled();
205
206	// global option which enables / disables depth writes
207	if (!mEnableDepthWrite)
208	{
209	usedPass->setDepthWriteEnabled(false);
210	}
211
212
213	//-- set actual pass here
214	Pass *result = SceneManager::setPass(usedPass);
215
216
217	// reset depth write
218	if (!mEnableDepthWrite)
219	{
220	usedPass->setDepthWriteEnabled(IsDepthWrite);
221	}
222
223	// reset illumination stage
224	mIlluminationStage = savedStage;
225
226	return result;
227	}
228	//-----------------------------------------------------------------------
229	void VisibilityTerrainSceneManager::_findVisibleObjects(Camera* cam,
230	bool onlyShadowCasters)
231	{
232	if (NORMAL_RENDER_HACK)
233	{
234	TerrainSceneManager::_findVisibleObjects(cam, onlyShadowCasters);
235	return;
236	}
237
238	//-- show visible scene nodes and octree bounding boxes from last frame
239	if (mShowVisualization)
240	{
241	PrepareVisualization(cam);
242	}
243	else
244	{
245	// for hierarchical culling, we interleave identification
246	// and rendering of objects in _renderVisibibleObjects
247
248	// for the shadow pass we use only standard rendering
249	// because of low occlusion
250	if (mShadowTechnique == SHADOWTYPE_TEXTURE_MODULATIVE &&
251	mIlluminationStage == IRS_RENDER_TO_TEXTURE)
252	{
253	TerrainSceneManager::_findVisibleObjects(cam, onlyShadowCasters);
254	}
255
256	// only shadow casters will be rendered in shadow texture pass
257	if (0) mHierarchyInterface->SetOnlyShadowCasters(onlyShadowCasters);
258	}
259
260
261	// -- delete lists stored for visualization
262	mVisible.clear();
263	mBoxes.clear();
264	}
265	//-----------------------------------------------------------------------
266	void VisibilityTerrainSceneManager::_renderVisibleObjects()
267	{
268	if (NORMAL_RENDER_HACK)
269	{
270	TerrainSceneManager::_renderVisibleObjects();
271
272	return;
273	}
274
275	InitDepthPass(); // create material for depth pass
276	InitItemBufferPass(); // create material for item buffer pass
277
278	// save ambient light to reset later
279	ColourValue savedAmbient = mAmbientLight;
280
281	//-- apply standard rendering for some modes (e.g., visualization, shadow pass)
282
283	if (mShowVisualization \|\|
284	(mShadowTechnique == SHADOWTYPE_TEXTURE_MODULATIVE &&
285	mIlluminationStage == IRS_RENDER_TO_TEXTURE))
286	{
287	IlluminationRenderStage savedStage = mIlluminationStage;
288
289	if (mShowVisualization)
290	{
291	// disable illumination stage to prevent rendering shadows
292	mIlluminationStage = IRS_NONE;
293	}
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	// this is also called in TerrainSceneManager: really
303	// nexessary?
304	mDestRenderSystem -> setLightingEnabled(false);
305
306	// don't render backgrounds for item buffer
307	if (mUseItemBuffer)
308	{
309	clearSpecialCaseRenderQueues();
310	getRenderQueue()->clear();
311	}
312
313	//-- hierarchical culling
314	// the objects of different layers (e.g., background, scene,
315	// overlay) must be identified and rendered one after another
316
317	//-- render all early skies
318	clearSpecialCaseRenderQueues();
319	addSpecialCaseRenderQueue(RENDER_QUEUE_BACKGROUND);
320	addSpecialCaseRenderQueue(RENDER_QUEUE_SKIES_EARLY);
321	setSpecialCaseRenderQueueMode(SceneManager::SCRQM_INCLUDE);
322
323	OctreeSceneManager::_renderVisibleObjects();
324	/////////////////////////////////////////////////
325
326	#ifdef GTP_VISIBILITY_MODIFIED_OGRE
327	// delete previously rendered content
328	_deleteRenderedQueueGroups();
329	#endif
330
331	//-- prepare queue for visible objects (i.e., all but overlay and skies late)
332	clearSpecialCaseRenderQueues();
333	addSpecialCaseRenderQueue(RENDER_QUEUE_SKIES_LATE);
334	addSpecialCaseRenderQueue(RENDER_QUEUE_OVERLAY);
335
336	// exclude this queues from hierarchical rendering
337	setSpecialCaseRenderQueueMode(SceneManager::SCRQM_EXCLUDE);
338
339	// set all necessary parameters for
340	// hierarchical visibility culling and rendering
341	InitVisibilityCulling(mCameraInProgress);
342
343	/**
344	* the hierarchical culling algorithm
345	* for depth pass: we just find objects and update depth buffer
346	* for "delayed" rendering: we render some passes afterwards
347	* e.g., transparents, because they need front-to-back sorting
348	**/
349
350	mVisibilityManager->ApplyVisibilityCulling();
351
352	// delete remaining renderables from queue:
353	// all which are not in mLeavePassesInQueue)
354	#ifdef GTP_VISIBILITY_MODIFIED_OGRE
355	_deleteRenderedQueueGroups(mLeavePassesInQueue);
356	#endif
357
358	//-- reset parameters
359	mIsDepthPassPhase = false;
360	mIsItemBufferPhase = false;
361	mSkipTransparents = false;
362	mLeavePassesInQueue = 0;
363
364	#if 1
365	// add visible nodes found by the visibility culling algorithm
366	if (mUseDepthPass)
367	{
368	NodeList::const_iterator it, it_end = mVisible.end();
369
370	//getRenderQueue()->clear();
371	for (it = mVisible.begin(); it != it_end; ++ it)
372	{
373	(*it)->_addToRenderQueue(mCameraInProgress, getRenderQueue(), false);
374	}
375	}
376	#endif
377	//-- now we can render all remaining queue objects
378	//-- used for depth pass, transparents, overlay
379	clearSpecialCaseRenderQueues();
380
381	OctreeSceneManager::_renderVisibleObjects();
382
383	} // hierarchical culling
384
385	// HACK: set the new render level index, important to avoid cracks
386	// in terrain caused by LOD
387	TerrainRenderable::NextRenderLevelIndex();
388
389	// reset ambient light
390	setAmbientLight(savedAmbient);
391
392	getRenderQueue()->clear(); // finally clear render queue
393	if (1) OGRE_DELETE(mRenderQueue); // HACK: should rather only be cleared ...
394
395	if (0) WriteLog(); // write out stats
396	}
397
398	//-----------------------------------------------------------------------
399	void VisibilityTerrainSceneManager::_updateSceneGraph(Camera* cam)
400	{
401	if (NORMAL_RENDER_HACK)
402	{
403	TerrainSceneManager::_updateSceneGraph(cam);
404	return;
405	}
406
407	mVisibilityManager->GetCullingManager()->SetHierarchyInterface(mHierarchyInterface);
408	mHierarchyInterface->SetRenderSystem(mDestRenderSystem);
409
410	TerrainSceneManager::_updateSceneGraph(cam);
411	}
412	//-----------------------------------------------------------------------
413	bool VisibilityTerrainSceneManager::setOption(const String & key, const void * val)
414	{
415	if (key == "UseDepthPass")
416	{
417	mUseDepthPass = (static_cast<const bool >(val));
418	return true;
419	}
420	if (key == "PrepareVisualization")
421	{
422	mShowVisualization = (static_cast<const bool >(val));
423	return true;
424	}
425	if (key == "RenderNodesForViz")
426	{
427	mRenderNodesForViz = (static_cast<const bool >(val));
428	return true;
429	}
430	if (key == "RenderNodesContentForViz")
431	{
432	mRenderNodesContentForViz = (static_cast<const bool >(val));
433	return true;
434	}
435	if (key == "SkyBoxEnabled")
436	{
437	mSkyBoxEnabled = (static_cast<const bool >(val));
438	return true;
439	}
440	if (key == "SkyPlaneEnabled")
441	{
442	mSkyPlaneEnabled = (static_cast<const bool >(val));
443	return true;
444	}
445	if (key == "SkyDomeEnabled")
446	{
447	mSkyDomeEnabled = (static_cast<const bool >(val));
448	return true;
449	}
450	if (key == "VisualizeCulledNodes")
451	{
452	mVisualizeCulledNodes = (static_cast<const bool >(val));
453	return true;
454	}
455	if (key == "DelayRenderTransparents")
456	{
457	mDelayRenderTransparents = (static_cast<const bool >(val));
458	return true;
459	}
460
461	if (key == "DepthWrite")
462	{
463	mEnableDepthWrite = (static_cast<const bool >(val));
464	return true;
465	}
466	if (key == "UseItemBuffer")
467	{
468	mUseItemBuffer = (static_cast<const bool >(val));
469	return true;
470	}
471	if (key == "ExecuteVertexProgramForAllPasses")
472	{
473	mExecuteVertexProgramForAllPasses = (static_cast<const bool >(val));
474	return true;
475	}
476	if (key == "RenderTransparentsForItemBuffer")
477	{
478	mRenderTransparentsForItemBuffer = (static_cast<const bool >(val));
479	return true;
480	}
481	if (key == "NodeVizScale")
482	{
483	OctreeNode::setVizScale(static_cast<const float >(val));
484	return true;
485	}
486
487	if (key == "UseArbQueries")
488	{
489	bool useArbQueries = (static_cast<const bool >(val));
490
491	if (useArbQueries)
492	{
493	mHierarchyInterface->DeleteQueries();
494	mDestRenderSystem->setConfigOption("ArbQueries", "Yes");
495	}
496	else
497	{
498	mHierarchyInterface->DeleteQueries();
499	mDestRenderSystem->setConfigOption("ArbQueries", "No");
500	}
501	}
502	return VisibilityOptionsManager(mVisibilityManager, mHierarchyInterface).
503	setOption(key, val) \|\| TerrainSceneManager::setOption(key, val);
504	}
505	//-----------------------------------------------------------------------
506	bool VisibilityTerrainSceneManager::getOption(const String & key, void *val)
507	{
508	if (key == "NumHierarchyNodes")
509	{
510	* static_cast<unsigned int *>(val) = (unsigned int)mNumOctants;
511	return true;
512	}
513
514	return VisibilityOptionsManager(mVisibilityManager, mHierarchyInterface).
515	getOption(key, val) && TerrainSceneManager::getOption(key, val);
516	}
517	//-----------------------------------------------------------------------
518	bool VisibilityTerrainSceneManager::getOptionValues(const String & key,
519	StringVector &refValueList)
520	{
521	return TerrainSceneManager::getOptionValues( key, refValueList);
522	}
523	//-----------------------------------------------------------------------
524	bool VisibilityTerrainSceneManager::getOptionKeys(StringVector & refKeys)
525	{
526	return VisibilityOptionsManager(mVisibilityManager, mHierarchyInterface).
527	getOptionKeys(refKeys) \|\| TerrainSceneManager::getOptionKeys(refKeys);
528	}
529	//-----------------------------------------------------------------------
530	void VisibilityTerrainSceneManager::setVisibilityManager(GtpVisibility::
531	VisibilityManager *visManager)
532	{
533	mVisibilityManager = visManager;
534	}
535	//-----------------------------------------------------------------------
536	GtpVisibility::VisibilityManager *VisibilityTerrainSceneManager::getVisibilityManager()
537	{
538	return mVisibilityManager;
539	}
540	//-----------------------------------------------------------------------
541	void VisibilityTerrainSceneManager::WriteLog()
542	{
543	std::stringstream d;
544
545	d << "Depth pass: " << StringConverter::toString(mUseDepthPass) << ", "
546	<< "Delay transparents: " << StringConverter::toString(mDelayRenderTransparents) << ", "
547	<< "Use optimization: " << StringConverter::toString(mHierarchyInterface->GetTestGeometryForVisibleLeaves()) << ", "
548	<< "Algorithm type: " << mVisibilityManager->GetCullingManagerType() << ", "
549	<< "Hierarchy nodes: " << mNumOctants << ", "
550	<< "Traversed nodes: " << mHierarchyInterface->GetNumTraversedNodes() << ", "
551	<< "Rendered nodes: " << mHierarchyInterface->GetNumRenderedNodes() << ", "
552	<< "Query culled nodes: " << mVisibilityManager->GetCullingManager()->GetNumQueryCulledNodes() << ", "
553	<< "Frustum culled nodes: " << mVisibilityManager->GetCullingManager()->GetNumFrustumCulledNodes() << ", "
554	<< "Queries issued: " << mVisibilityManager->GetCullingManager()->GetNumQueriesIssued() << ", "
555	<< "Found objects: " << (int)mVisible.size() << "\n";
556
557	LogManager::getSingleton().logMessage(d.str());
558	}
559	//-----------------------------------------------------------------------
560	void VisibilityTerrainSceneManager::renderObjects(
561	const RenderPriorityGroup::TransparentRenderablePassList& objs,
562	bool doLightIteration,
563	const LightList* manualLightList)
564	{
565	// for correct rendering, transparents must be rendered after hierarchical culling
566	// => do nothing
567	if (NORMAL_RENDER_HACK \|\| !mSkipTransparents)
568	{
569	SceneManager::renderObjects(objs, doLightIteration, manualLightList);
570	}
571	}
572	//-----------------------------------------------------------------------
573	bool VisibilityTerrainSceneManager::validatePassForRendering(Pass* pass)
574	{
575	if (NORMAL_RENDER_HACK)
576	{
577	return SceneManager::validatePassForRendering(pass);
578	}
579
580	// skip all but first pass if we are doing the depth pass
581	if ((mIsDepthPassPhase \|\| mIsItemBufferPhase) && (pass->getIndex() > 0))
582	{
583	return false;
584	}
585	// all but first pass
586	/*else if ((!mIsDepthPassPhase \|\| mIsItemBufferPhase) && (pass->getIndex() != 0))
587	{
588	return false;
589	}*/
590
591	return SceneManager::validatePassForRendering(pass);
592	}
593	//-----------------------------------------------------------------------
594	void VisibilityTerrainSceneManager::renderQueueGroupObjects(RenderQueueGroup* pGroup)
595	{
596	if (NORMAL_RENDER_HACK \|\| !mIsItemBufferPhase)
597	{
598	OctreeSceneManager::renderQueueGroupObjects(pGroup);
599	return;
600	}
601
602	//-- item buffer: render objects using false colors
603
604	// Iterate through priorities
605	RenderQueueGroup::PriorityMapIterator groupIt = pGroup->getIterator();
606
607	while (groupIt.hasMoreElements())
608	{
609	RenderItemBuffer(groupIt.getNext());
610	}
611	}
612	//-----------------------------------------------------------------------
613	void VisibilityTerrainSceneManager::RenderItemBuffer(RenderPriorityGroup* pGroup)
614	{
615	// Do solids
616	RenderPriorityGroup::SolidRenderablePassMap solidObjs = pGroup->_getSolidPasses();
617
618	// ----- SOLIDS LOOP -----
619	RenderPriorityGroup::SolidRenderablePassMap::const_iterator ipass, ipassend;
620	ipassend = solidObjs.end();
621
622	for (ipass = solidObjs.begin(); ipass != ipassend; ++ipass)
623	{
624	// Fast bypass if this group is now empty
625	if (ipass->second->empty())
626	continue;
627
628	// Render only first pass of renderable as false color
629	if (ipass->first->getIndex() > 0)
630	continue;
631
632	RenderPriorityGroup::RenderableList* rendList = ipass->second;
633
634	RenderPriorityGroup::RenderableList::const_iterator irend, irendend;
635	irendend = rendList->end();
636
637	for (irend = rendList->begin(); irend != irendend; ++irend)
638	{
639	if (0)
640	{
641	std::stringstream d; d << "itembuffer, pass name: " <<
642	ipass->first->getParent()->getParent()->getName();
643
644	LogManager::getSingleton().logMessage(d.str());
645	}
646
647	RenderSingleObjectForItemBuffer(*irend, ipass->first);
648	}
649	}
650
651	//-- TRANSPARENT LOOP: must be handled differently from solids
652
653	// transparents are treated either as solids or completely discarded
654	if (mRenderTransparentsForItemBuffer)
655	{
656	RenderPriorityGroup::TransparentRenderablePassList transpObjs =
657	pGroup->_getTransparentPasses();
658	RenderPriorityGroup::TransparentRenderablePassList::const_iterator
659	itrans, itransend;
660
661	itransend = transpObjs.end();
662	for (itrans = transpObjs.begin(); itrans != itransend; ++itrans)
663	{
664	// like for solids, render only first pass
665	if (itrans->pass->getIndex() == 0)
666	{
667	RenderSingleObjectForItemBuffer(itrans->renderable, itrans->pass);
668	}
669	}
670	}
671	}
672	//-----------------------------------------------------------------------
673	void VisibilityTerrainSceneManager::RenderSingleObjectForItemBuffer(Renderable rend, Pass pass)
674	{
675	static LightList nullLightList;
676
677	int col[4];
678
679	// -- create color code out of object id
680	col[0] = (rend->getId() >> 16) & 255;
681	col[1] = (rend->getId() >> 8) & 255;
682	col[2] = rend->getId() & 255;
683	// col[3] = 255;
684
685	//mDestRenderSystem->setColour(col[0], col[1], col[2], col[3]);
686
687	mItemBufferPass->setAmbient(ColourValue(col[0] / 255.0f,
688	col[1] / 255.0f,
689	col[2] / 255.0f, 1));
690
691	// set vertex program of current pass
692	if (mExecuteVertexProgramForAllPasses && pass->hasVertexProgram())
693	{
694	mItemBufferPass->setVertexProgram(pass->getVertexProgramName());
695
696	if (mItemBufferPass->hasVertexProgram())
697	{
698	const GpuProgramPtr& prg = mItemBufferPass->getVertexProgram();
699	// Load this program if not done already
700	if (!prg->isLoaded())
701	prg->load();
702	// Copy params
703	mItemBufferPass->setVertexProgramParameters(pass->getVertexProgramParameters());
704	}
705	}
706	else if (mItemBufferPass->hasVertexProgram())
707	{
708	mItemBufferPass->setVertexProgram("");
709	}
710
711	Pass *usedPass = setPass(mItemBufferPass);
712
713
714	// render a single object, this will set up auto params if required
715	renderSingleObject(rend, usedPass, false, &nullLightList);
716	}
717	//-----------------------------------------------------------------------
718	GtpVisibility::VisibilityManager *VisibilityTerrainSceneManager::GetVisibilityManager()
719	{
720	return mVisibilityManager;
721	}
722	//-----------------------------------------------------------------------
723	void VisibilityTerrainSceneManager::InitVisibilityCulling(Camera *cam)
724	{
725	// reset culling manager stats
726	mVisibilityManager->GetCullingManager()->InitFrame(mVisualizeCulledNodes);
727
728	// set depth pass flag before rendering
729	mIsDepthPassPhase = mUseDepthPass;
730
731	mIsHierarchicalCulling = true; // during hierarchical culling
732
733	// item buffer needs full ambient lighting to use item colors as unique id
734	if (mUseItemBuffer)
735	{
736	mIsItemBufferPhase = true;
737	setAmbientLight(ColourValue(1,1,1,1));
738	}
739
740
741	// set passes which are stored in render queue
742	// for rendering AFTER hierarchical culling, i.e., passes which need
743	// a special rendering order
744
745	mLeavePassesInQueue = 0;
746
747	if (!mUseDepthPass && !mUseItemBuffer)
748	{
749	if (mShadowTechnique == SHADOWTYPE_STENCIL_ADDITIVE)
750	{
751	// TODO: remove this pass because it should be processed during hierarchical culling
752	//mLeavePassesInQueue \|= RenderPriorityGroup::SOLID_PASSES_NOSHADOW;
753
754	mLeavePassesInQueue \|= RenderPriorityGroup::SOLID_PASSES_DECAL;
755	mLeavePassesInQueue \|= RenderPriorityGroup::SOLID_PASSES_DIFFUSE_SPECULAR;
756	mLeavePassesInQueue \|= RenderPriorityGroup::TRANSPARENT_PASSES;
757
758	// just render ambient stuff
759	mIlluminationStage = IRS_AMBIENT;
760	getRenderQueue()->setSplitPassesByLightingType(true);
761	}
762
763	if (mShadowTechnique == SHADOWTYPE_STENCIL_MODULATIVE)
764	{
765	mLeavePassesInQueue \|= RenderPriorityGroup::SOLID_PASSES_NOSHADOW;
766	mLeavePassesInQueue \|= RenderPriorityGroup::TRANSPARENT_PASSES;
767	}
768
769	// transparents should be rendered after hierarchical culling to
770	// provide front-to-back ordering
771	if (mDelayRenderTransparents)
772	{
773	mLeavePassesInQueue \|= RenderPriorityGroup::TRANSPARENT_PASSES;
774	}
775	}
776
777	// skip rendering transparents during the hierarchical culling
778	// (because they will be rendered afterwards)
779	mSkipTransparents =
780	(mIsDepthPassPhase \|\| (mLeavePassesInQueue & RenderPriorityGroup::TRANSPARENT_PASSES));
781
782	// -- initialise interface for rendering traversal of the hierarchy
783	mHierarchyInterface->SetHierarchyRoot(mOctree);
784
785	// possible two cameras (one for culling, one for rendering)
786	mHierarchyInterface->InitTraversal(mCameraInProgress,
787	mCullCamera ? getCamera("CullCamera") : NULL,
788	mLeavePassesInQueue);
789
790	//std::stringstream d; d << "leave passes in queue: " << mLeavePassesInQueue;LogManager::getSingleton().logMessage(d.str());
791	}
792	//-----------------------------------------------------------------------
793	OctreeHierarchyInterface *VisibilityTerrainSceneManager::GetHierarchyInterface()
794	{
795	return mHierarchyInterface;
796	}
797	//-----------------------------------------------------------------------
798	void VisibilityTerrainSceneManager::endFrame()
799	{
800	TerrainRenderable::ResetRenderLevelIndex();
801	}
802	//-----------------------------------------------------------------------
803	Entity* VisibilityTerrainSceneManager::createEntity(const String& entityName,
804	const String& meshName)
805	{
806	Entity *ent = SceneManager::createEntity(entityName, meshName);
807
808	for (int i = 0; i < (int)ent->getNumSubEntities(); ++i)
809	{
810	ent->getSubEntity(i)->setId(mCurrentEntityId);
811	}
812
813	// increase counter of entity id values
814	++ mCurrentEntityId;
815
816	return ent;
817	}
818	//-----------------------------------------------------------------------
819	void VisibilityTerrainSceneManager::renderAdditiveStencilShadowedQueueGroupObjects(
820	RenderQueueGroup* pGroup)
821	{
822	// only render solid passes during hierarchical culling
823	if (mIsHierarchicalCulling)
824	{
825	RenderQueueGroup::PriorityMapIterator groupIt = pGroup->getIterator();
826	LightList lightList;
827
828	while (groupIt.hasMoreElements())
829	{
830	RenderPriorityGroup* pPriorityGrp = groupIt.getNext();
831
832	// Sort the queue first
833	pPriorityGrp->sort(mCameraInProgress);
834
835	// Clear light list
836	lightList.clear();
837
838	// Render all the ambient passes first, no light iteration, no lights
839	mIlluminationStage = IRS_AMBIENT;
840
841	OctreeSceneManager::renderObjects(pPriorityGrp->_getSolidPasses(), false, &lightList);
842	// Also render any objects which have receive shadows disabled
843	OctreeSceneManager::renderObjects(pPriorityGrp->_getSolidPassesNoShadow(), true);
844	}
845	}
846	else // render the rest of the passes
847	{
848	OctreeSceneManager::renderAdditiveStencilShadowedQueueGroupObjects(pGroup);
849	}
850	}
851	//-----------------------------------------------------------------------
852	void VisibilityTerrainSceneManager::renderModulativeStencilShadowedQueueGroupObjects(
853	RenderQueueGroup* pGroup)
854	{
855	if (mIsHierarchicalCulling)
856	{
857	// Iterate through priorities
858	RenderQueueGroup::PriorityMapIterator groupIt = pGroup->getIterator();
859
860	while (groupIt.hasMoreElements())
861	{
862	RenderPriorityGroup* pPriorityGrp = groupIt.getNext();
863
864	// Sort the queue first
865	pPriorityGrp->sort(mCameraInProgress);
866
867	// Do (shadowable) solids
868	OctreeSceneManager::renderObjects(pPriorityGrp->_getSolidPasses(), true);
869	}
870	}
871	else
872	{
873	SceneManager::renderModulativeStencilShadowedQueueGroupObjects(pGroup);
874	}
875	}
876
877	//-------------------------------------------------------------------------
878	void VisibilityTerrainSceneManager::setWorldGeometry( const String& filename )
879	{
880	// Clear out any existing world resources (if not default)
881	if (ResourceGroupManager::getSingleton().getWorldResourceGroupName() !=
882	ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME)
883	{
884	ResourceGroupManager::getSingleton().clearResourceGroup(
885	ResourceGroupManager::getSingleton().getWorldResourceGroupName());
886	}
887
888	mTerrainPages.clear();
889	// Load the configuration
890	loadConfig(filename);
891
892	// Resize the octree, allow for 1 page for now
893	float max_x = mOptions.scale.x * mOptions.pageSize;
894	float max_y = mOptions.scale.y;
895	float max_z = mOptions.scale.z * mOptions.pageSize;
896
897	//-- note: slows down view frustum culling!
898	#if 1
899	float maxAxis = std::max(max_x, max_y);
900	maxAxis = std::max(maxAxis, max_z);
901	resize( AxisAlignedBox( 0, 0, 0, maxAxis, maxAxis, maxAxis ) );
902	#else
903	resize( AxisAlignedBox( 0, 0, 0, max_x, max_y, max_z ) );
904	#endif
905
906	setupTerrainMaterial();
907	setupTerrainPages();
908
909	}
910
911	} // namespace Ogre

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