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OgreVisibilityTerrainSceneManager.cpp @ 347

Revision 347, 26.5 KB checked in by mattausch, 19 years ago (diff)
fixed color bug fixed terrain tile ch culling made better terrain

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
12
13	namespace Ogre {
14
15	//-----------------------------------------------------------------------
16	VisibilityTerrainSceneManager::VisibilityTerrainSceneManager(
17	GtpVisibility::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	mIsDepthPassPhase(false),
27	mUseItemBuffer(false),
28	//mUseItemBuffer(true),
29	mIsItemBufferPhase(false),
30	mCurrentEntityId(1),
31	mEnableDepthWrite(true),
32	mSkipTransparents(false),
33	mRenderTransparentsForItemBuffer(true),
34	mExecuteVertexProgramForAllPasses(true),
35	mIsHierarchicalCulling(false)
36	{
37	mHierarchyInterface = new OctreeHierarchyInterface(this, mDestRenderSystem);
38
39	//mDisplayNodes = true;
40	//mShowBoundingBoxes = true;
41	//mShowBoxes = true;
42
43	// TODO: set maxdepth to reasonable value
44	mMaxDepth = 50;
45	}
46	//-----------------------------------------------------------------------
47	void VisibilityTerrainSceneManager::InitDepthPass()
48	{
49	MaterialPtr depthMat = MaterialManager::getSingleton().getByName("Visibility/DepthPass");
50
51	if (depthMat.isNull())
52	{
53	depthMat = MaterialManager::getSingleton().create(
54	"Visibility/DepthPass",
55	ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME);
56
57	mDepthPass = depthMat->getTechnique(0)->getPass(0);
58	mDepthPass->setColourWriteEnabled(false);
59	mDepthPass->setDepthWriteEnabled(true);
60	mDepthPass->setLightingEnabled(false);
61	}
62	else
63	{
64	mDepthPass = depthMat->getTechnique(0)->getPass(0);
65	}
66	}
67	//-----------------------------------------------------------------------
68	VisibilityTerrainSceneManager::~VisibilityTerrainSceneManager()
69	{
70	OGRE_DELETE(mHierarchyInterface);
71	}
72	//-----------------------------------------------------------------------
73	void VisibilityTerrainSceneManager::InitItemBufferPass()
74	{
75	MaterialPtr itemBufferMat = MaterialManager::getSingleton().
76	getByName("Visibility/ItemBufferPass");
77
78	if (itemBufferMat.isNull())
79	{
80	// Init
81	itemBufferMat = MaterialManager::getSingleton().create("Visibility/ItemBufferPass",
82	ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME);
83
84	mItemBufferPass = itemBufferMat->getTechnique(0)->getPass(0);
85	mItemBufferPass->setColourWriteEnabled(true);
86	mItemBufferPass->setDepthWriteEnabled(true);
87	mItemBufferPass->setLightingEnabled(true);
88	//mItemBufferPass->setLightingEnabled(false);
89	}
90	else
91	{
92	mItemBufferPass = itemBufferMat->getTechnique(0)->getPass(0);
93	}
94	//mItemBufferPass->setAmbient(1, 1, 0);
95	}
96	//-------------------------------------------------------------------------
97	void VisibilityTerrainSceneManager::setWorldGeometry( const String& filename )
98	{
99	// Clear out any existing world resources (if not default)
100	if (ResourceGroupManager::getSingleton().getWorldResourceGroupName() !=
101	ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME)
102	{
103	ResourceGroupManager::getSingleton().clearResourceGroup(
104	ResourceGroupManager::getSingleton().getWorldResourceGroupName());
105	}
106	mTerrainPages.clear();
107	// Load the configuration
108	loadConfig(filename);
109
110	// Resize the octree, allow for 1 page for now
111	float max_x = mOptions.scale.x * mOptions.pageSize;
112	float max_y = mOptions.scale.y;
113	float max_z = mOptions.scale.z * mOptions.pageSize;
114
115	float maxAxis = std::max(max_x, max_y);
116	maxAxis = std::max(maxAxis, max_z);
117	resize( AxisAlignedBox( 0, 0, 0, maxAxis, maxAxis, maxAxis ) );
118
119	setupTerrainMaterial();
120
121	setupTerrainPages();
122
123	}
124
125	//-----------------------------------------------------------------------
126	void VisibilityTerrainSceneManager::PrepareVisualization(Camera *cam)
127	{
128	// add player camera for visualization purpose
129	try
130	{
131	Camera *c;
132	if ((c = getCamera("PlayerCam")) != NULL)
133	{
134	getRenderQueue()->addRenderable(c);
135	}
136	}
137	catch (...)
138	{
139	// ignore
140	}
141	for (BoxList::iterator it = mBoxes.begin(); it != mBoxes.end(); ++it)
142	{
143	getRenderQueue()->addRenderable(*it);
144	}
145	if (mRenderNodesForViz \|\| mRenderNodesContentForViz)
146	{
147	// HACK: change node material so it is better suited for visualization
148	MaterialPtr nodeMat = MaterialManager::getSingleton().getByName("Core/NodeMaterial");
149	nodeMat->setAmbient(1, 1, 0);
150	nodeMat->setLightingEnabled(true);
151	nodeMat->getTechnique(0)->getPass(0)->removeAllTextureUnitStates();
152
153	for (NodeList::iterator it = mVisible.begin(); it != mVisible.end(); ++it)
154	{
155	if (mRenderNodesForViz)
156	{
157	// render the leaf nodes
158	if (((it)->numAttachedObjects() > 0) && ((it)->numChildren() == 0) &&
159	(*it)->getAttachedObject(0)->getMovableType() == "Entity")
160	{
161	getRenderQueue()->addRenderable((*it));
162	}
163
164	// addbounding boxes instead of node itself
165	//(*it)->_addBoundingBoxToQueue(getRenderQueue());
166	}
167	if (mRenderNodesContentForViz)
168	{
169	(*it)->_addToRenderQueue(cam, getRenderQueue(), false);
170	}
171	}
172	}
173	}
174	//-----------------------------------------------------------------------
175	Pass VisibilityTerrainSceneManager::setPass(Pass pass)
176	{
177	// TODO: setting vertex program is not efficient
178	//Pass *usedPass = ((mIsDepthPassPhase && !pass->hasVertexProgram()) ? mDepthPass : pass);
179
180	// set depth fill pass if we currently do not make an aabb occlusion query
181	Pass *usedPass = (mIsDepthPassPhase && !mHierarchyInterface->IsBoundingBoxQuery() ?
182	mDepthPass : pass);
183
184	IlluminationRenderStage savedStage = mIlluminationStage;
185
186	// set illumination stage to NONE so no shadow material is used
187	// for depth pass or for occlusion query
188	if (mIsDepthPassPhase \|\| mHierarchyInterface->IsBoundingBoxQuery())
189	{
190	mIlluminationStage = IRS_NONE;
191	}
192
193	// --- set vertex program of current pass in order to set correct depth
194	if (mExecuteVertexProgramForAllPasses && mIsDepthPassPhase && pass->hasVertexProgram())
195	{
196	// add vertex program of current pass to depth pass
197	mDepthPass->setVertexProgram(pass->getVertexProgramName());
198
199	if (mDepthPass->hasVertexProgram())
200	{
201	const GpuProgramPtr& prg = mDepthPass->getVertexProgram();
202	// Load this program if not done already
203	if (!prg->isLoaded())
204	prg->load();
205	// Copy params
206	mDepthPass->setVertexProgramParameters(pass->getVertexProgramParameters());
207	}
208	}
209	else if (mDepthPass->hasVertexProgram())
210	{
211	mDepthPass->setVertexProgram("");
212	}
213
214
215	bool IsDepthWrite = usedPass->getDepthWriteEnabled();
216
217	// global option which enables / disables depth writes
218	if (!mEnableDepthWrite)
219	{
220	usedPass->setDepthWriteEnabled(false);
221	}
222	//else if (mIsItemBufferPass) {usedPass = mItemBufferPass;}
223
224	Pass *result = SceneManager::setPass(usedPass);
225
226	// reset depth write
227	if (!mEnableDepthWrite)
228	{
229	usedPass->setDepthWriteEnabled(IsDepthWrite);
230	}
231
232	// reset illumination stage
233	mIlluminationStage = savedStage;
234
235	return result;
236	}
237	//-----------------------------------------------------------------------
238	void VisibilityTerrainSceneManager::_findVisibleObjects(Camera* cam,
239	bool onlyShadowCasters)
240	{
241	//-- show visible scene nodes and octree bounding boxes from last frame
242	if (mShowVisualization)
243	{
244	PrepareVisualization(cam);
245	}
246	else
247	{
248	// for hierarchical culling, we interleave identification
249	// and rendering of objects in _renderVisibibleObjects
250
251	// for the shadow pass we use only standard rendering
252	// because of low occlusion
253	if (mShadowTechnique == SHADOWTYPE_TEXTURE_MODULATIVE &&
254	mIlluminationStage == IRS_RENDER_TO_TEXTURE)
255	{
256	TerrainSceneManager::_findVisibleObjects(cam, onlyShadowCasters);
257	}
258	// only shadow casters will be rendered in shadow texture pass
259	// 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
271	InitDepthPass(); // create material for depth pass
272	InitItemBufferPass(); // create material for item buffer pass
273
274	// save ambient light to reset later
275	ColourValue savedAmbient = mAmbientLight;
276
277	//-- apply standard rendering for some modes (e.g., visualization, shadow pass)
278
279	if (mShowVisualization \|\|
280	(mShadowTechnique == SHADOWTYPE_TEXTURE_MODULATIVE &&
281	mIlluminationStage == IRS_RENDER_TO_TEXTURE))
282	{
283	IlluminationRenderStage savedStage = mIlluminationStage;
284
285	if (mShowVisualization)
286	// disable illumination stage to prevent rendering shadows
287	mIlluminationStage = IRS_NONE;
288
289	// standard rendering for shadow maps because of performance
290	TerrainSceneManager::_renderVisibleObjects();
291
292	mIlluminationStage = savedStage;
293	}
294	else //-- the hierarchical culling algorithm
295	{
296	// don't render backgrounds for item buffer
297	if (mUseItemBuffer)
298	{
299	clearSpecialCaseRenderQueues();
300	getRenderQueue()->clear();
301	}
302
303	//-- hierarchical culling
304	// the objects of different layers (e.g., background, scene,
305	// overlay) must be identified and rendered one after another
306
307	//-- render all early skies
308	clearSpecialCaseRenderQueues();
309	addSpecialCaseRenderQueue(RENDER_QUEUE_BACKGROUND);
310	addSpecialCaseRenderQueue(RENDER_QUEUE_SKIES_EARLY);
311	setSpecialCaseRenderQueueMode(SceneManager::SCRQM_INCLUDE);
312
313	TerrainSceneManager::_renderVisibleObjects();
314
315	#ifdef GTP_VISIBILITY_MODIFIED_OGRE
316	// delete previously rendered content
317	_deleteRenderedQueueGroups();
318	#endif
319
320	//-- prepare queue for visible objects (i.e., all but overlay and skies late)
321	clearSpecialCaseRenderQueues();
322	addSpecialCaseRenderQueue(RENDER_QUEUE_SKIES_LATE);
323	addSpecialCaseRenderQueue(RENDER_QUEUE_OVERLAY);
324
325	// exclude this queues from hierarchical rendering
326	setSpecialCaseRenderQueueMode(SceneManager::SCRQM_EXCLUDE);
327
328	// set all necessary parameters for
329	// hierarchical visibility culling and rendering
330	InitVisibilityCulling(mCameraInProgress);
331
332	/**
333	* the hierarchical culling algorithm
334	* for depth pass: we just find objects and update depth buffer
335	* for "delayed" rendering: we render some passes afterwards
336	* e.g., transparents, because they need front-to-back sorting
337	**/
338
339	mVisibilityManager->ApplyVisibilityCulling();
340
341	// delete remaining renderables from queue (all not in mLeavePassesInQueue)
342	#ifdef GTP_VISIBILITY_MODIFIED_OGRE
343	_deleteRenderedQueueGroups(mLeavePassesInQueue);
344	#endif
345
346	//-- reset parameters
347	mIsDepthPassPhase = false;
348	mIsItemBufferPhase = false;
349	mSkipTransparents = false;
350	mLeavePassesInQueue = 0;
351
352
353	// add visible nodes found by the visibility culling algorithm
354	if (mUseDepthPass)
355	{
356	for (NodeList::iterator it = mVisible.begin(); it != mVisible.end(); ++it)
357	{
358	(*it)->_addToRenderQueue(mCameraInProgress, getRenderQueue(), false);
359	}
360	}
361
362	//-- now we can render all remaining queue objects
363	// used for depth pass, transparents, overlay
364	clearSpecialCaseRenderQueues();
365
366	TerrainSceneManager::_renderVisibleObjects();
367	}
368
369	// HACK: set the new render level index, important to avoid cracks
370	// in terrain caused by LOD
371	TerrainRenderable::NextRenderLevelIndex();
372
373	// reset ambient light
374	setAmbientLight(savedAmbient);
375
376	getRenderQueue()->clear(); // finally clear render queue
377	OGRE_DELETE(mRenderQueue); // HACK: should be cleared before...
378	//WriteLog(); // write out stats
379
380	}
381
382	//-----------------------------------------------------------------------
383	void VisibilityTerrainSceneManager::_updateSceneGraph(Camera* cam)
384	{
385	mVisibilityManager->GetCullingManager()->SetHierarchyInterface(mHierarchyInterface);
386	mHierarchyInterface->SetRenderSystem(mDestRenderSystem);
387
388	TerrainSceneManager::_updateSceneGraph(cam);
389	}
390	//-----------------------------------------------------------------------
391	bool VisibilityTerrainSceneManager::setOption(const String & key, const void * val)
392	{
393	if (key == "UseDepthPass")
394	{
395	mUseDepthPass = (static_cast<const bool >(val));
396	return true;
397	}
398	if (key == "PrepareVisualization")
399	{
400	mShowVisualization = (static_cast<const bool >(val));
401	return true;
402	}
403	if (key == "RenderNodesForViz")
404	{
405	mRenderNodesForViz = (static_cast<const bool >(val));
406	return true;
407	}
408	if (key == "RenderNodesContentForViz")
409	{
410	mRenderNodesContentForViz = (static_cast<const bool >(val));
411	return true;
412	}
413	if (key == "SkyBoxEnabled")
414	{
415	mSkyBoxEnabled = (static_cast<const bool >(val));
416	return true;
417	}
418	if (key == "SkyPlaneEnabled")
419	{
420	mSkyPlaneEnabled = (static_cast<const bool >(val));
421	return true;
422	}
423	if (key == "SkyDomeEnabled")
424	{
425	mSkyDomeEnabled = (static_cast<const bool >(val));
426	return true;
427	}
428	if (key == "VisualizeCulledNodes")
429	{
430	mVisualizeCulledNodes = (static_cast<const bool >(val));
431	return true;
432	}
433	if (key == "DelayRenderTransparents")
434	{
435	mDelayRenderTransparents = (static_cast<const bool >(val));
436	return true;
437	}
438
439	if (key == "DepthWrite")
440	{
441	mEnableDepthWrite = (static_cast<const bool >(val));
442	return true;
443	}
444	if (key == "UseItemBuffer")
445	{
446	mUseItemBuffer = (static_cast<const bool >(val));
447	return true;
448	}
449	if (key == "ExecuteVertexProgramForAllPasses")
450	{
451	mExecuteVertexProgramForAllPasses = (static_cast<const bool >(val));
452	return true;
453	}
454	if (key == "RenderTransparentsForItemBuffer")
455	{
456	mRenderTransparentsForItemBuffer = (static_cast<const bool >(val));
457	return true;
458	}
459	if (key == "NodeVizScale")
460	{
461	OctreeNode::setVizScale(static_cast<const float >(val));
462	return true;
463	}
464
465	if (key == "UseArbQueries")
466	{
467	bool useArbQueries = (static_cast<const bool >(val));
468
469	if (useArbQueries)
470	{
471	mHierarchyInterface->DeleteQueries();
472	mDestRenderSystem->setConfigOption("ArbQueries", "Yes");
473	}
474	else
475	{
476	mHierarchyInterface->DeleteQueries();
477	mDestRenderSystem->setConfigOption("ArbQueries", "No");
478	}
479	}
480	return VisibilityOptionsManager(mVisibilityManager, mHierarchyInterface).
481	setOption(key, val) \|\| TerrainSceneManager::setOption(key, val);
482	}
483	//-----------------------------------------------------------------------
484	bool VisibilityTerrainSceneManager::getOption(const String & key, void *val)
485	{
486	if (key == "NumHierarchyNodes")
487	{
488	* static_cast<unsigned int *>(val) = (unsigned int)mNumOctants;
489	return true;
490	}
491
492	return VisibilityOptionsManager(mVisibilityManager, mHierarchyInterface).
493	getOption(key, val) && TerrainSceneManager::getOption(key, val);
494	}
495	//-----------------------------------------------------------------------
496	bool VisibilityTerrainSceneManager::getOptionValues(const String & key,
497	StringVector &refValueList)
498	{
499	return TerrainSceneManager::getOptionValues( key, refValueList);
500	}
501	//-----------------------------------------------------------------------
502	bool VisibilityTerrainSceneManager::getOptionKeys(StringVector & refKeys)
503	{
504	return VisibilityOptionsManager(mVisibilityManager, mHierarchyInterface).
505	getOptionKeys(refKeys) \|\| TerrainSceneManager::getOptionKeys(refKeys);
506	}
507	//-----------------------------------------------------------------------
508	void VisibilityTerrainSceneManager::setVisibilityManager(GtpVisibility::
509	VisibilityManager *visManager)
510	{
511	mVisibilityManager = visManager;
512	}
513	//-----------------------------------------------------------------------
514	GtpVisibility::VisibilityManager *VisibilityTerrainSceneManager::getVisibilityManager( void )
515	{
516	return mVisibilityManager;
517	}
518	//-----------------------------------------------------------------------
519	void VisibilityTerrainSceneManager::WriteLog()
520	{
521	std::stringstream d;
522
523	d << "Depth pass: " << StringConverter::toString(mUseDepthPass) << ", "
524	<< "Delay transparents: " << StringConverter::toString(mDelayRenderTransparents) << ", "
525	<< "Use optimization: " << StringConverter::toString(mHierarchyInterface->GetTestGeometryForVisibleLeaves()) << ", "
526	<< "Algorithm type: " << mVisibilityManager->GetCullingManagerType() << ", "
527	<< "Hierarchy nodes: " << mNumOctants << ", "
528	<< "Traversed nodes: " << mHierarchyInterface->GetNumTraversedNodes() << ", "
529	<< "Rendered nodes: " << mHierarchyInterface->GetNumRenderedNodes() << ", "
530	<< "Query culled nodes: " << mVisibilityManager->GetCullingManager()->GetNumQueryCulledNodes() << ", "
531	<< "Frustum culled nodes: " << mVisibilityManager->GetCullingManager()->GetNumFrustumCulledNodes() << ", "
532	<< "Queries issued: " << mVisibilityManager->GetCullingManager()->GetNumQueriesIssued() << "\n";
533
534	LogManager::getSingleton().logMessage(d.str());
535	}
536	//-----------------------------------------------------------------------
537	void VisibilityTerrainSceneManager::renderObjects(
538	const RenderPriorityGroup::TransparentRenderablePassList& objs,
539	bool doLightIteration, const LightList* manualLightList)
540	{
541	// for correct rendering, transparents must be rendered after hierarchical culling
542	if (!mSkipTransparents)
543	{
544	OctreeSceneManager::renderObjects(objs, doLightIteration, manualLightList);
545	}
546	}
547	//-----------------------------------------------------------------------
548	bool VisibilityTerrainSceneManager::validatePassForRendering(Pass* pass)
549	{
550	// skip all but first pass if we are doing the depth pass
551	if ((mIsDepthPassPhase \|\| mIsItemBufferPhase) && pass->getIndex() > 0)
552	{
553	return false;
554	}
555	return SceneManager::validatePassForRendering(pass);
556	}
557	//-----------------------------------------------------------------------
558	void VisibilityTerrainSceneManager::renderQueueGroupObjects(RenderQueueGroup* pGroup)
559	{
560	if (!mIsItemBufferPhase)
561	{
562	TerrainSceneManager::renderQueueGroupObjects(pGroup);
563	return;
564	}
565
566	//-- item buffer
567
568	// Iterate through priorities
569	RenderQueueGroup::PriorityMapIterator groupIt = pGroup->getIterator();
570
571	while (groupIt.hasMoreElements())
572	{
573	RenderItemBuffer(groupIt.getNext());
574	}
575	}
576	//-----------------------------------------------------------------------
577	void VisibilityTerrainSceneManager::RenderItemBuffer(RenderPriorityGroup* pGroup)
578	{
579	// Do solids
580	RenderPriorityGroup::SolidRenderablePassMap solidObjs = pGroup->_getSolidPasses();
581
582	// ----- SOLIDS LOOP -----
583	RenderPriorityGroup::SolidRenderablePassMap::const_iterator ipass, ipassend;
584	ipassend = solidObjs.end();
585
586	for (ipass = solidObjs.begin(); ipass != ipassend; ++ipass)
587	{
588	// Fast bypass if this group is now empty
589	if (ipass->second->empty())
590	continue;
591
592	// Render only first pass
593	if (ipass->first->getIndex() > 0)
594	continue;
595
596	RenderPriorityGroup::RenderableList* rendList = ipass->second;
597
598	RenderPriorityGroup::RenderableList::const_iterator irend, irendend;
599	irendend = rendList->end();
600
601	for (irend = rendList->begin(); irend != irendend; ++irend)
602	{
603	std::stringstream d; d << "itembuffer, pass name: " <<
604	ipass->first->getParent()->getParent()->getName();
605
606	LogManager::getSingleton().logMessage(d.str());
607
608	RenderSingleObjectForItemBuffer(*irend, ipass->first);
609	}
610	}
611
612	// -- TRANSPARENT LOOP: must be handled differently
613
614	// transparents are treated either as solids or completely discarded
615	if (mRenderTransparentsForItemBuffer)
616	{
617	RenderPriorityGroup::TransparentRenderablePassList transpObjs =
618	pGroup->_getTransparentPasses();
619	RenderPriorityGroup::TransparentRenderablePassList::const_iterator
620	itrans, itransend;
621
622	itransend = transpObjs.end();
623	for (itrans = transpObjs.begin(); itrans != itransend; ++itrans)
624	{
625	// like for solids, render only first pass
626	if (itrans->pass->getIndex() == 0)
627	{
628	RenderSingleObjectForItemBuffer(itrans->renderable, itrans->pass);
629	}
630	}
631	}
632	}
633	//-----------------------------------------------------------------------
634	void VisibilityTerrainSceneManager::RenderSingleObjectForItemBuffer(Renderable rend, Pass pass)
635	{
636	static LightList nullLightList;
637
638	int col[4];
639
640	// -- create color code out of object id
641	col[0] = (rend->getId() >> 16) & 255;
642	col[1] = (rend->getId() >> 8) & 255;
643	col[2] = rend->getId() & 255;
644	// col[3] = 255;
645
646	//mDestRenderSystem->setColour(col[0], col[1], col[2], col[3]);
647
648	mItemBufferPass->setAmbient(ColourValue(col[0] / 255.0f,
649	col[1] / 255.0f,
650	col[2] / 255.0f, 1));
651
652	// set vertex program of current pass
653	if (mExecuteVertexProgramForAllPasses && pass->hasVertexProgram())
654	{
655	mItemBufferPass->setVertexProgram(pass->getVertexProgramName());
656
657	if (mItemBufferPass->hasVertexProgram())
658	{
659	const GpuProgramPtr& prg = mItemBufferPass->getVertexProgram();
660	// Load this program if not done already
661	if (!prg->isLoaded())
662	prg->load();
663	// Copy params
664	mItemBufferPass->setVertexProgramParameters(pass->getVertexProgramParameters());
665	}
666	}
667	else if (mItemBufferPass->hasVertexProgram())
668	{
669	mItemBufferPass->setVertexProgram("");
670	}
671
672	Pass *usedPass = setPass(mItemBufferPass);
673
674
675	// Render a single object, this will set up auto params if required
676	renderSingleObject(rend, usedPass, false, &nullLightList);
677	}
678	//-----------------------------------------------------------------------
679	GtpVisibility::VisibilityManager *VisibilityTerrainSceneManager::GetVisibilityManager()
680	{
681	return mVisibilityManager;
682	}
683	//-----------------------------------------------------------------------
684	void VisibilityTerrainSceneManager::InitVisibilityCulling(Camera *cam)
685	{
686	// reset culling manager stats
687	mVisibilityManager->GetCullingManager()->InitFrame(mVisualizeCulledNodes);
688
689	// set depth pass flag before rendering
690	mIsDepthPassPhase = mUseDepthPass;
691
692	// item buffer needs full ambient lighting to use item colors as unique id
693	if (mUseItemBuffer)
694	{
695	mIsItemBufferPhase = true;
696	setAmbientLight(ColourValue(1,1,1,1));
697	}
698
699
700	// set passes which are stored in render queue
701	// for rendering AFTER hierarchical culling, i.e., passes which need
702	// a special rendering order
703	mLeavePassesInQueue = 0;
704
705	if (!mUseDepthPass && !mUseItemBuffer)
706	{
707	if (mShadowTechnique == SHADOWTYPE_STENCIL_ADDITIVE)
708	{
709	// TODO: remove this pass because it should be processed during hierarchical culling
710	//mLeavePassesInQueue \|= RenderPriorityGroup::SOLID_PASSES_NOSHADOW;
711
712	mLeavePassesInQueue \|= RenderPriorityGroup::SOLID_PASSES_DECAL;
713	mLeavePassesInQueue \|= RenderPriorityGroup::SOLID_PASSES_DIFFUSE_SPECULAR;
714	mLeavePassesInQueue \|= RenderPriorityGroup::TRANSPARENT_PASSES;
715
716	// just render ambient stuff
717	mIlluminationStage = IRS_AMBIENT;
718	}
719
720	if (mShadowTechnique == SHADOWTYPE_STENCIL_MODULATIVE)
721	{
722	mLeavePassesInQueue \|= RenderPriorityGroup::SOLID_PASSES_NOSHADOW;
723	mLeavePassesInQueue \|= RenderPriorityGroup::TRANSPARENT_PASSES;
724	}
725
726	// transparents should be rendered after hierarchical culling to
727	// provide front-to-back ordering
728	if (mDelayRenderTransparents)
729	{
730	mLeavePassesInQueue \|= RenderPriorityGroup::TRANSPARENT_PASSES;
731	}
732	}
733
734	// skip rendering transparents in the hierarchical culling
735	// (because they will be rendered afterwards)
736	mSkipTransparents = mUseDepthPass \|\|
737	(mLeavePassesInQueue & RenderPriorityGroup::TRANSPARENT_PASSES);
738
739	// -- initialise interface for rendering traversal of the hierarchy
740	mHierarchyInterface->SetHierarchyRoot(mOctree);
741
742	// possible two cameras (one for culling, one for rendering)
743	mHierarchyInterface->InitTraversal(mCameraInProgress,
744	mCullCamera ? getCamera("CullCamera") : NULL,
745	mLeavePassesInQueue);
746
747	//std::stringstream d; d << "leave passes in queue: " << mLeavePassesInQueue;LogManager::getSingleton().logMessage(d.str());
748	}
749	//-----------------------------------------------------------------------
750	OctreeHierarchyInterface *VisibilityTerrainSceneManager::GetHierarchyInterface()
751	{
752	return mHierarchyInterface;
753	}
754	//-----------------------------------------------------------------------
755	void VisibilityTerrainSceneManager::endFrame()
756	{
757	TerrainRenderable::ResetRenderLevelIndex();
758	}
759	//-----------------------------------------------------------------------
760	Entity* VisibilityTerrainSceneManager::createEntity(const String& entityName,
761	const String& meshName)
762	{
763	Entity *ent = SceneManager::createEntity(entityName, meshName);
764
765	for (int i = 0; i < (int)ent->getNumSubEntities(); ++i)
766	{
767	ent->getSubEntity(i)->setId(mCurrentEntityId);
768	}
769
770	// increase counter of entity id values
771	++ mCurrentEntityId;
772
773	return ent;
774	}
775	//-----------------------------------------------------------------------
776	void VisibilityTerrainSceneManager::renderAdditiveStencilShadowedQueueGroupObjects(RenderQueueGroup* pGroup)
777	{
778	// only render solid passes during hierarchical culling
779	if (mIsHierarchicalCulling)
780	{
781	RenderQueueGroup::PriorityMapIterator groupIt = pGroup->getIterator();
782	LightList lightList;
783
784	while (groupIt.hasMoreElements())
785	{
786	RenderPriorityGroup* pPriorityGrp = groupIt.getNext();
787
788	// Sort the queue first
789	pPriorityGrp->sort(mCameraInProgress);
790
791	// Clear light list
792	lightList.clear();
793
794	// Render all the ambient passes first, no light iteration, no lights
795	mIlluminationStage = IRS_AMBIENT;
796
797	OctreeSceneManager::renderObjects(pPriorityGrp->_getSolidPasses(), false, &lightList);
798	// Also render any objects which have receive shadows disabled
799	OctreeSceneManager::renderObjects(pPriorityGrp->_getSolidPassesNoShadow(), true);
800	}
801	}
802	else
803	{
804	OctreeSceneManager::renderAdditiveStencilShadowedQueueGroupObjects(pGroup);
805	}
806	}
807	//-----------------------------------------------------------------------
808	void VisibilityTerrainSceneManager::renderModulativeStencilShadowedQueueGroupObjects(RenderQueueGroup* pGroup)
809	{
810	if (mIsHierarchicalCulling)
811	{
812	// Iterate through priorities
813	RenderQueueGroup::PriorityMapIterator groupIt = pGroup->getIterator();
814
815	while (groupIt.hasMoreElements())
816	{
817	RenderPriorityGroup* pPriorityGrp = groupIt.getNext();
818
819	// Sort the queue first
820	pPriorityGrp->sort(mCameraInProgress);
821
822	// Do (shadowable) solids
823	OctreeSceneManager::renderObjects(pPriorityGrp->_getSolidPasses(), true);
824	}
825	}
826	else
827	{
828	SceneManager::renderModulativeStencilShadowedQueueGroupObjects(pGroup);
829	}
830	}
831	} // namespace Ogre

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source: trunk/VUT/Ogre/src/OgreVisibilityTerrainSceneManager.cpp @ 347

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