Context Navigation

← Previous Revision
Latest Revision
Next Revision →
Blame
Revision Log

OgreStaticGeometry.cpp @ 44

Last change on this file since 44 was 5, checked in by anonymous, 17 years ago
=hoffentlich gehts jetzt
File size: 54.8 KB

Line
1	/*
2	-----------------------------------------------------------------------------
3	This source file is part of OGRE
4	(Object-oriented Graphics Rendering Engine)
5	For the latest info, see http://www.ogre3d.org/
6
7	Copyright (c) 2000-2006 Torus Knot Software Ltd
8	Also see acknowledgements in Readme.html
9
10	This program is free software; you can redistribute it and/or modify it under
11	the terms of the GNU Lesser General Public License as published by the Free Software
12	Foundation; either version 2 of the License, or (at your option) any later
13	version.
14
15	This program is distributed in the hope that it will be useful, but WITHOUT
16	ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
17	FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
18
19	You should have received a copy of the GNU Lesser General Public License along with
20	this program; if not, write to the Free Software Foundation, Inc., 59 Temple
21	Place - Suite 330, Boston, MA 02111-1307, USA, or go to
22	http://www.gnu.org/copyleft/lesser.txt.
23
24	You may alternatively use this source under the terms of a specific version of
25	the OGRE Unrestricted License provided you have obtained such a license from
26	Torus Knot Software Ltd.
27	-----------------------------------------------------------------------------
28	*/
29	#include "OgreStableHeaders.h"
30	#include "OgreStaticGeometry.h"
31	#include "OgreEntity.h"
32	#include "OgreSubEntity.h"
33	#include "OgreSceneNode.h"
34	#include "OgreException.h"
35	#include "OgreMesh.h"
36	#include "OgreSubMesh.h"
37	#include "OgreLogManager.h"
38	#include "OgreSceneManager.h"
39	#include "OgreCamera.h"
40	#include "OgreMaterialManager.h"
41	#include "OgreRoot.h"
42	#include "OgreRenderSystem.h"
43	#include "OgreEdgeListBuilder.h"
44
45	namespace Ogre {
46
47	#define REGION_RANGE 1024
48	#define REGION_HALF_RANGE 512
49	#define REGION_MAX_INDEX 511
50	#define REGION_MIN_INDEX -512
51
52	//--------------------------------------------------------------------------
53	StaticGeometry::StaticGeometry(SceneManager* owner, const String& name):
54	mOwner(owner),
55	mName(name),
56	mBuilt(false),
57	mUpperDistance(0.0f),
58	mSquaredUpperDistance(0.0f),
59	mCastShadows(false),
60	mRegionDimensions(Vector3(1000,1000,1000)),
61	mHalfRegionDimensions(Vector3(500,500,500)),
62	mOrigin(Vector3(0,0,0)),
63	mVisible(true),
64	mRenderQueueID(RENDER_QUEUE_MAIN),
65	mRenderQueueIDSet(false)
66	{
67	}
68	//--------------------------------------------------------------------------
69	StaticGeometry::~StaticGeometry()
70	{
71	reset();
72	}
73	//--------------------------------------------------------------------------
74	StaticGeometry::Region* StaticGeometry::getRegion(const AxisAlignedBox& bounds,
75	bool autoCreate)
76	{
77	if (bounds.isNull())
78	return 0;
79
80	// Get the region which has the largest overlapping volume
81	const Vector3 min = bounds.getMinimum();
82	const Vector3 max = bounds.getMaximum();
83
84	// Get the min and max region indexes
85	ushort minx, miny, minz;
86	ushort maxx, maxy, maxz;
87	getRegionIndexes(min, minx, miny, minz);
88	getRegionIndexes(max, maxx, maxy, maxz);
89	Real maxVolume = 0.0f;
90	ushort finalx, finaly, finalz;
91	for (ushort x = minx; x <= maxx; ++x)
92	{
93	for (ushort y = miny; y <= maxy; ++y)
94	{
95	for (ushort z = minz; z <= maxz; ++z)
96	{
97	Real vol = getVolumeIntersection(bounds, x, y, z);
98	if (vol > maxVolume)
99	{
100	maxVolume = vol;
101	finalx = x;
102	finaly = y;
103	finalz = z;
104	}
105
106	}
107	}
108	}
109
110	assert(maxVolume > 0.0f &&
111	"Static geometry: Problem determining closest volume match!");
112
113	return getRegion(finalx, finaly, finalz, autoCreate);
114
115	}
116	//--------------------------------------------------------------------------
117	Real StaticGeometry::getVolumeIntersection(const AxisAlignedBox& box,
118	ushort x, ushort y, ushort z)
119	{
120	// Get bounds of indexed region
121	AxisAlignedBox regionBounds = getRegionBounds(x, y, z);
122	AxisAlignedBox intersectBox = regionBounds.intersection(box);
123	// return a 'volume' which ignores zero dimensions
124	// since we only use this for relative comparisons of the same bounds
125	// this will still be internally consistent
126	Vector3 boxdiff = box.getMaximum() - box.getMinimum();
127	Vector3 intersectDiff = intersectBox.getMaximum() - intersectBox.getMinimum();
128
129	return (boxdiff.x == 0 ? 1 : intersectDiff.x) *
130	(boxdiff.y == 0 ? 1 : intersectDiff.y) *
131	(boxdiff.z == 0 ? 1 : intersectDiff.z);
132
133	}
134	//--------------------------------------------------------------------------
135	AxisAlignedBox StaticGeometry::getRegionBounds(ushort x, ushort y, ushort z)
136	{
137	Vector3 min(
138	((Real)x - REGION_HALF_RANGE) * mRegionDimensions.x + mOrigin.x,
139	((Real)y - REGION_HALF_RANGE) * mRegionDimensions.y + mOrigin.y,
140	((Real)z - REGION_HALF_RANGE) * mRegionDimensions.z + mOrigin.z
141	);
142	Vector3 max = min + mRegionDimensions;
143	return AxisAlignedBox(min, max);
144	}
145	//--------------------------------------------------------------------------
146	Vector3 StaticGeometry::getRegionCentre(ushort x, ushort y, ushort z)
147	{
148	return Vector3(
149	((Real)x - REGION_HALF_RANGE) * mRegionDimensions.x + mOrigin.x
150	+ mHalfRegionDimensions.x,
151	((Real)y - REGION_HALF_RANGE) * mRegionDimensions.y + mOrigin.y
152	+ mHalfRegionDimensions.y,
153	((Real)z - REGION_HALF_RANGE) * mRegionDimensions.z + mOrigin.z
154	+ mHalfRegionDimensions.z
155	);
156	}
157	//--------------------------------------------------------------------------
158	StaticGeometry::Region* StaticGeometry::getRegion(
159	ushort x, ushort y, ushort z, bool autoCreate)
160	{
161	uint32 index = packIndex(x, y, z);
162	Region* ret = getRegion(index);
163	if (!ret && autoCreate)
164	{
165	// Make a name
166	StringUtil::StrStreamType str;
167	str << mName << ":" << index;
168	// Calculate the region centre
169	Vector3 centre = getRegionCentre(x, y, z);
170	ret = new Region(this, str.str(), mOwner, index, centre);
171	mOwner->injectMovableObject(ret);
172	ret->setVisible(mVisible);
173	ret->setCastShadows(mCastShadows);
174	if (mRenderQueueIDSet)
175	{
176	ret->setRenderQueueGroup(mRenderQueueID);
177	}
178	mRegionMap[index] = ret;
179	}
180	return ret;
181	}
182	//--------------------------------------------------------------------------
183	StaticGeometry::Region* StaticGeometry::getRegion(uint32 index)
184	{
185	RegionMap::iterator i = mRegionMap.find(index);
186	if (i != mRegionMap.end())
187	{
188	return i->second;
189	}
190	else
191	{
192	return 0;
193	}
194
195	}
196	//--------------------------------------------------------------------------
197	void StaticGeometry::getRegionIndexes(const Vector3& point,
198	ushort& x, ushort& y, ushort& z)
199	{
200	// Scale the point into multiples of region and adjust for origin
201	Vector3 scaledPoint = (point - mOrigin) / mRegionDimensions;
202
203	// Round down to 'bottom left' point which represents the cell index
204	int ix = Math::IFloor(scaledPoint.x);
205	int iy = Math::IFloor(scaledPoint.y);
206	int iz = Math::IFloor(scaledPoint.z);
207
208	// Check bounds
209	if (ix < REGION_MIN_INDEX \|\| ix > REGION_MAX_INDEX
210	\|\| iy < REGION_MIN_INDEX \|\| iy > REGION_MAX_INDEX
211	\|\| iz < REGION_MIN_INDEX \|\| iz > REGION_MAX_INDEX)
212	{
213	OGRE_EXCEPT(Exception::ERR_INVALIDPARAMS,
214	"Point out of bounds",
215	"StaticGeometry::getRegionIndexes");
216	}
217	// Adjust for the fact that we use unsigned values for simplicity
218	// (requires less faffing about for negatives give 10-bit packing
219	x = static_cast<ushort>(ix + REGION_HALF_RANGE);
220	y = static_cast<ushort>(iy + REGION_HALF_RANGE);
221	z = static_cast<ushort>(iz + REGION_HALF_RANGE);
222
223
224	}
225	//--------------------------------------------------------------------------
226	uint32 StaticGeometry::packIndex(ushort x, ushort y, ushort z)
227	{
228	return x + (y << 10) + (z << 20);
229	}
230	//--------------------------------------------------------------------------
231	StaticGeometry::Region* StaticGeometry::getRegion(const Vector3& point,
232	bool autoCreate)
233	{
234	ushort x, y, z;
235	getRegionIndexes(point, x, y, z);
236	return getRegion(x, y, z, autoCreate);
237	}
238	//--------------------------------------------------------------------------
239	AxisAlignedBox StaticGeometry::calculateBounds(VertexData* vertexData,
240	const Vector3& position, const Quaternion& orientation,
241	const Vector3& scale)
242	{
243	const VertexElement* posElem =
244	vertexData->vertexDeclaration->findElementBySemantic(
245	VES_POSITION);
246	HardwareVertexBufferSharedPtr vbuf =
247	vertexData->vertexBufferBinding->getBuffer(posElem->getSource());
248	unsigned char* vertex =
249	static_cast<unsigned char*>(
250	vbuf->lock(HardwareBuffer::HBL_READ_ONLY));
251	float* pFloat;
252
253	Vector3 min, max;
254	bool first = true;
255
256	for(size_t j = 0; j < vertexData->vertexCount; ++j, vertex += vbuf->getVertexSize())
257	{
258	posElem->baseVertexPointerToElement(vertex, &pFloat);
259
260	Vector3 pt;
261
262	pt.x = (*pFloat++);
263	pt.y = (*pFloat++);
264	pt.z = (*pFloat++);
265	// Transform to world (scale, rotate, translate)
266	pt = (orientation * (pt * scale)) + position;
267	if (first)
268	{
269	min = max = pt;
270	first = false;
271	}
272	else
273	{
274	min.makeFloor(pt);
275	max.makeCeil(pt);
276	}
277
278	}
279	vbuf->unlock();
280	return AxisAlignedBox(min, max);
281	}
282	//--------------------------------------------------------------------------
283	void StaticGeometry::addEntity(Entity* ent, const Vector3& position,
284	const Quaternion& orientation, const Vector3& scale)
285	{
286	const MeshPtr& msh = ent->getMesh();
287	// Validate
288	if (msh->isLodManual())
289	{
290	LogManager::getSingleton().logMessage(
291	"WARNING (StaticGeometry): Manual LOD is not supported. "
292	"Using only highest LOD level for mesh " + msh->getName());
293	}
294
295	AxisAlignedBox sharedWorldBounds;
296	// queue this entities submeshes and choice of material
297	// also build the lists of geometry to be used for the source of lods
298	for (uint i = 0; i < ent->getNumSubEntities(); ++i)
299	{
300	SubEntity* se = ent->getSubEntity(i);
301	QueuedSubMesh* q = new QueuedSubMesh();
302
303	// Get the geometry for this SubMesh
304	q->submesh = se->getSubMesh();
305	q->geometryLodList = determineGeometry(q->submesh);
306	q->materialName = se->getMaterialName();
307	q->orientation = orientation;
308	q->position = position;
309	q->scale = scale;
310	// Determine the bounds based on the highest LOD
311	q->worldBounds = calculateBounds(
312	(*q->geometryLodList)[0].vertexData,
313	position, orientation, scale);
314
315	mQueuedSubMeshes.push_back(q);
316	}
317	}
318	//--------------------------------------------------------------------------
319	StaticGeometry::SubMeshLodGeometryLinkList*
320	StaticGeometry::determineGeometry(SubMesh* sm)
321	{
322	// First, determine if we've already seen this submesh before
323	SubMeshGeometryLookup::iterator i =
324	mSubMeshGeometryLookup.find(sm);
325	if (i != mSubMeshGeometryLookup.end())
326	{
327	return i->second;
328	}
329	// Otherwise, we have to create a new one
330	SubMeshLodGeometryLinkList* lodList = new SubMeshLodGeometryLinkList();
331	mSubMeshGeometryLookup[sm] = lodList;
332	ushort numLods = sm->parent->isLodManual() ? 1 :
333	sm->parent->getNumLodLevels();
334	lodList->resize(numLods);
335	for (ushort lod = 0; lod < numLods; ++lod)
336	{
337	SubMeshLodGeometryLink& geomLink = (*lodList)[lod];
338	IndexData *lodIndexData;
339	if (lod == 0)
340	{
341	lodIndexData = sm->indexData;
342	}
343	else
344	{
345	lodIndexData = sm->mLodFaceList[lod - 1];
346	}
347	// Can use the original mesh geometry?
348	if (sm->useSharedVertices)
349	{
350	if (sm->parent->getNumSubMeshes() == 1)
351	{
352	// Ok, this is actually our own anyway
353	geomLink.vertexData = sm->parent->sharedVertexData;
354	geomLink.indexData = lodIndexData;
355	}
356	else
357	{
358	// We have to split it
359	splitGeometry(sm->parent->sharedVertexData,
360	lodIndexData, &geomLink);
361	}
362	}
363	else
364	{
365	if (lod == 0)
366	{
367	// Ok, we can use the existing geometry; should be in full
368	// use by just this SubMesh
369	geomLink.vertexData = sm->vertexData;
370	geomLink.indexData = sm->indexData;
371	}
372	else
373	{
374	// We have to split it
375	splitGeometry(sm->vertexData,
376	lodIndexData, &geomLink);
377	}
378	}
379	assert (geomLink.vertexData->vertexStart == 0 &&
380	"Cannot use vertexStart > 0 on indexed geometry due to "
381	"rendersystem incompatibilities - see the docs!");
382	}
383
384
385	return lodList;
386	}
387	//--------------------------------------------------------------------------
388	void StaticGeometry::splitGeometry(VertexData* vd, IndexData* id,
389	StaticGeometry::SubMeshLodGeometryLink* targetGeomLink)
390	{
391	// Firstly we need to scan to see how many vertices are being used
392	// and while we're at it, build the remap we can use later
393	bool use32bitIndexes =
394	id->indexBuffer->getType() == HardwareIndexBuffer::IT_32BIT;
395	uint16 *p16;
396	uint32 *p32;
397	IndexRemap indexRemap;
398	if (use32bitIndexes)
399	{
400	p32 = static_cast<uint32*>(id->indexBuffer->lock(
401	id->indexStart,
402	id->indexCount * id->indexBuffer->getIndexSize(),
403	HardwareBuffer::HBL_READ_ONLY));
404	buildIndexRemap(p32, id->indexCount, indexRemap);
405	id->indexBuffer->unlock();
406	}
407	else
408	{
409	p16 = static_cast<uint16*>(id->indexBuffer->lock(
410	id->indexStart,
411	id->indexCount * id->indexBuffer->getIndexSize(),
412	HardwareBuffer::HBL_READ_ONLY));
413	buildIndexRemap(p16, id->indexCount, indexRemap);
414	id->indexBuffer->unlock();
415	}
416	if (indexRemap.size() == vd->vertexCount)
417	{
418	// ha, complete usage after all
419	targetGeomLink->vertexData = vd;
420	targetGeomLink->indexData = id;
421	return;
422	}
423
424
425	// Create the new vertex data records
426	targetGeomLink->vertexData = vd->clone(false);
427	// Convenience
428	VertexData* newvd = targetGeomLink->vertexData;
429	//IndexData* newid = targetGeomLink->indexData;
430	// Update the vertex count
431	newvd->vertexCount = indexRemap.size();
432
433	size_t numvbufs = vd->vertexBufferBinding->getBufferCount();
434	// Copy buffers from old to new
435	for (unsigned short b = 0; b < numvbufs; ++b)
436	{
437	// Lock old buffer
438	HardwareVertexBufferSharedPtr oldBuf =
439	vd->vertexBufferBinding->getBuffer(b);
440	// Create new buffer
441	HardwareVertexBufferSharedPtr newBuf =
442	HardwareBufferManager::getSingleton().createVertexBuffer(
443	oldBuf->getVertexSize(),
444	indexRemap.size(),
445	HardwareBuffer::HBU_STATIC);
446	// rebind
447	newvd->vertexBufferBinding->setBinding(b, newBuf);
448
449	// Copy all the elements of the buffer across, by iterating over
450	// the IndexRemap which describes how to move the old vertices
451	// to the new ones. By nature of the map the remap is in order of
452	// indexes in the old buffer, but note that we're not guaranteed to
453	// address every vertex (which is kinda why we're here)
454	uchar* pSrcBase = static_cast<uchar*>(
455	oldBuf->lock(HardwareBuffer::HBL_READ_ONLY));
456	uchar* pDstBase = static_cast<uchar*>(
457	newBuf->lock(HardwareBuffer::HBL_DISCARD));
458	size_t vertexSize = oldBuf->getVertexSize();
459	// Buffers should be the same size
460	assert (vertexSize == newBuf->getVertexSize());
461
462	for (IndexRemap::iterator r = indexRemap.begin();
463	r != indexRemap.end(); ++r)
464	{
465	assert (r->first < oldBuf->getNumVertices());
466	assert (r->second < newBuf->getNumVertices());
467
468	uchar* pSrc = pSrcBase + r->first * vertexSize;
469	uchar* pDst = pDstBase + r->second * vertexSize;
470	memcpy(pDst, pSrc, vertexSize);
471	}
472	// unlock
473	oldBuf->unlock();
474	newBuf->unlock();
475
476	}
477
478	// Now create a new index buffer
479	HardwareIndexBufferSharedPtr ibuf =
480	HardwareBufferManager::getSingleton().createIndexBuffer(
481	id->indexBuffer->getType(), id->indexCount,
482	HardwareBuffer::HBU_STATIC);
483
484	if (use32bitIndexes)
485	{
486	uint32 pSrc32, pDst32;
487	pSrc32 = static_cast<uint32*>(id->indexBuffer->lock(
488	id->indexStart,
489	id->indexCount * id->indexBuffer->getIndexSize(),
490	HardwareBuffer::HBL_READ_ONLY));
491	pDst32 = static_cast<uint32*>(ibuf->lock(
492	HardwareBuffer::HBL_DISCARD));
493	remapIndexes(pSrc32, pDst32, indexRemap, id->indexCount);
494	id->indexBuffer->unlock();
495	ibuf->unlock();
496	}
497	else
498	{
499	uint16 pSrc16, pDst16;
500	pSrc16 = static_cast<uint16*>(id->indexBuffer->lock(
501	id->indexStart,
502	id->indexCount * id->indexBuffer->getIndexSize(),
503	HardwareBuffer::HBL_READ_ONLY));
504	pDst16 = static_cast<uint16*>(ibuf->lock(
505	HardwareBuffer::HBL_DISCARD));
506	remapIndexes(pSrc16, pDst16, indexRemap, id->indexCount);
507	id->indexBuffer->unlock();
508	ibuf->unlock();
509	}
510
511	targetGeomLink->indexData = new IndexData();
512	targetGeomLink->indexData->indexStart = 0;
513	targetGeomLink->indexData->indexCount = id->indexCount;
514	targetGeomLink->indexData->indexBuffer = ibuf;
515
516	// Store optimised geometry for deallocation later
517	OptimisedSubMeshGeometry *optGeom = new OptimisedSubMeshGeometry();
518	optGeom->indexData = targetGeomLink->indexData;
519	optGeom->vertexData = targetGeomLink->vertexData;
520	mOptimisedSubMeshGeometryList.push_back(optGeom);
521	}
522	//--------------------------------------------------------------------------
523	void StaticGeometry::addSceneNode(const SceneNode* node)
524	{
525	SceneNode::ConstObjectIterator obji = node->getAttachedObjectIterator();
526	while (obji.hasMoreElements())
527	{
528	MovableObject* mobj = obji.getNext();
529	if (mobj->getMovableType() == "Entity")
530	{
531	addEntity(static_cast<Entity*>(mobj),
532	node->_getDerivedPosition(),
533	node->_getDerivedOrientation(),
534	node->_getDerivedScale());
535	}
536	}
537	// Iterate through all the child-nodes
538	SceneNode::ConstChildNodeIterator nodei = node->getChildIterator();
539
540	while (nodei.hasMoreElements())
541	{
542	const SceneNode* node = static_cast<const SceneNode*>(nodei.getNext());
543	// Add this subnode and its children...
544	addSceneNode( node );
545	}
546	}
547	//--------------------------------------------------------------------------
548	void StaticGeometry::build(void)
549	{
550	// Make sure there's nothing from previous builds
551	destroy();
552
553	// Firstly allocate meshes to regions
554	for (QueuedSubMeshList::iterator qi = mQueuedSubMeshes.begin();
555	qi != mQueuedSubMeshes.end(); ++qi)
556	{
557	QueuedSubMesh* qsm = *qi;
558	Region* region = getRegion(qsm->worldBounds, true);
559	region->assign(qsm);
560	}
561	bool stencilShadows = false;
562	if (mCastShadows && mOwner->isShadowTechniqueStencilBased())
563	{
564	stencilShadows = true;
565	}
566
567	// Now tell each region to build itself
568	for (RegionMap::iterator ri = mRegionMap.begin();
569	ri != mRegionMap.end(); ++ri)
570	{
571	ri->second->build(stencilShadows);
572	}
573
574	}
575	//--------------------------------------------------------------------------
576	void StaticGeometry::destroy(void)
577	{
578	// delete the regions
579	for (RegionMap::iterator i = mRegionMap.begin();
580	i != mRegionMap.end(); ++i)
581	{
582	mOwner->extractMovableObject(i->second);
583	delete i->second;
584	}
585	mRegionMap.clear();
586	}
587	//--------------------------------------------------------------------------
588	void StaticGeometry::reset(void)
589	{
590	destroy();
591	for (QueuedSubMeshList::iterator i = mQueuedSubMeshes.begin();
592	i != mQueuedSubMeshes.end(); ++i)
593	{
594	delete *i;
595	}
596	mQueuedSubMeshes.clear();
597	// Delete precached geoemtry lists
598	for (SubMeshGeometryLookup::iterator l = mSubMeshGeometryLookup.begin();
599	l != mSubMeshGeometryLookup.end(); ++l)
600	{
601	delete l->second;
602	}
603	mSubMeshGeometryLookup.clear();
604	// Delete optimised geometry
605	for (OptimisedSubMeshGeometryList::iterator o = mOptimisedSubMeshGeometryList.begin();
606	o != mOptimisedSubMeshGeometryList.end(); ++o)
607	{
608	delete *o;
609	}
610	mOptimisedSubMeshGeometryList.clear();
611
612	}
613	//--------------------------------------------------------------------------
614	void StaticGeometry::setVisible(bool visible)
615	{
616	mVisible = visible;
617	// tell any existing regions
618	for (RegionMap::iterator ri = mRegionMap.begin();
619	ri != mRegionMap.end(); ++ri)
620	{
621	ri->second->setVisible(visible);
622	}
623	}
624	//--------------------------------------------------------------------------
625	void StaticGeometry::setCastShadows(bool castShadows)
626	{
627	mCastShadows = castShadows;
628	// tell any existing regions
629	for (RegionMap::iterator ri = mRegionMap.begin();
630	ri != mRegionMap.end(); ++ri)
631	{
632	ri->second->setCastShadows(castShadows);
633	}
634
635	}
636	//--------------------------------------------------------------------------
637	void StaticGeometry::setRenderQueueGroup(uint8 queueID)
638	{
639	assert(queueID <= RENDER_QUEUE_MAX && "Render queue out of range!");
640	mRenderQueueIDSet = true;
641	mRenderQueueID = queueID;
642	// tell any existing regions
643	for (RegionMap::iterator ri = mRegionMap.begin();
644	ri != mRegionMap.end(); ++ri)
645	{
646	ri->second->setRenderQueueGroup(queueID);
647	}
648	}
649	//--------------------------------------------------------------------------
650	uint8 StaticGeometry::getRenderQueueGroup(void) const
651	{
652	return mRenderQueueID;
653	}
654	//--------------------------------------------------------------------------
655	void StaticGeometry::dump(const String& filename) const
656	{
657	std::ofstream of(filename.c_str());
658	of << "Static Geometry Report for " << mName << std::endl;
659	of << "-------------------------------------------------" << std::endl;
660	of << "Number of queued submeshes: " << mQueuedSubMeshes.size() << std::endl;
661	of << "Number of regions: " << mRegionMap.size() << std::endl;
662	of << "Region dimensions: " << mRegionDimensions << std::endl;
663	of << "Origin: " << mOrigin << std::endl;
664	of << "Max distance: " << mUpperDistance << std::endl;
665	of << "Casts shadows?: " << mCastShadows << std::endl;
666	of << std::endl;
667	for (RegionMap::const_iterator ri = mRegionMap.begin();
668	ri != mRegionMap.end(); ++ri)
669	{
670	ri->second->dump(of);
671	}
672	of << "-------------------------------------------------" << std::endl;
673	}
674	//--------------------------------------------------------------------------
675	StaticGeometry::RegionIterator StaticGeometry::getRegionIterator(void)
676	{
677	return RegionIterator(mRegionMap.begin(), mRegionMap.end());
678	}
679	//--------------------------------------------------------------------------
680	//--------------------------------------------------------------------------
681	StaticGeometry::Region::Region(StaticGeometry* parent, const String& name,
682	SceneManager* mgr, uint32 regionID, const Vector3& centre)
683	: MovableObject(name), mParent(parent), mSceneMgr(mgr), mNode(0),
684	mRegionID(regionID), mCentre(centre), mBoundingRadius(0.0f),
685	mCurrentLod(0), mEdgeList(0), mVertexProgramInUse(false)
686	{
687	// First LOD mandatory, and always from 0
688	mLodSquaredDistances.push_back(0.0f);
689	}
690	//--------------------------------------------------------------------------
691	StaticGeometry::Region::~Region()
692	{
693	if (mNode)
694	{
695	mNode->getParentSceneNode()->removeChild(mNode);
696	mSceneMgr->destroySceneNode(mNode->getName());
697	mNode = 0;
698	}
699	// delete
700	for (LODBucketList::iterator i = mLodBucketList.begin();
701	i != mLodBucketList.end(); ++i)
702	{
703	delete *i;
704	}
705	mLodBucketList.clear();
706
707	for (ShadowRenderableList::iterator s = mShadowRenderables.begin();
708	s != mShadowRenderables.end(); ++s)
709	{
710	delete *s;
711	}
712	mShadowRenderables.clear();
713	delete mEdgeList;
714
715	// no need to delete queued meshes, these are managed in StaticGeometry
716
717	}
718	//--------------------------------------------------------------------------
719	uint32 StaticGeometry::Region::getTypeFlags(void) const
720	{
721	return SceneManager::STATICGEOMETRY_TYPE_MASK;
722	}
723	//--------------------------------------------------------------------------
724	void StaticGeometry::Region::assign(QueuedSubMesh* qmesh)
725	{
726	mQueuedSubMeshes.push_back(qmesh);
727	// update lod distances
728	ushort lodLevels = qmesh->submesh->parent->getNumLodLevels();
729	assert(qmesh->geometryLodList->size() == lodLevels);
730
731	while(mLodSquaredDistances.size() < lodLevels)
732	{
733	mLodSquaredDistances.push_back(0.0f);
734	}
735	// Make sure LOD levels are max of all at the requested level
736	for (ushort lod = 1; lod < lodLevels; ++lod)
737	{
738	const MeshLodUsage& meshLod =
739	qmesh->submesh->parent->getLodLevel(lod);
740	mLodSquaredDistances[lod] = std::max(mLodSquaredDistances[lod],
741	meshLod.fromDepthSquared);
742	}
743
744	// update bounds
745	// Transform world bounds relative to our centre
746	AxisAlignedBox localBounds(
747	qmesh->worldBounds.getMinimum() - mCentre,
748	qmesh->worldBounds.getMaximum() - mCentre);
749	mAABB.merge(localBounds);
750	mBoundingRadius = std::max(mBoundingRadius, localBounds.getMinimum().length());
751	mBoundingRadius = std::max(mBoundingRadius, localBounds.getMaximum().length());
752
753	}
754	//--------------------------------------------------------------------------
755	void StaticGeometry::Region::build(bool stencilShadows)
756	{
757	// Create a node
758	mNode = mSceneMgr->getRootSceneNode()->createChildSceneNode(mName,
759	mCentre);
760	mNode->attachObject(this);
761	// We need to create enough LOD buckets to deal with the highest LOD
762	// we encountered in all the meshes queued
763	for (ushort lod = 0; lod < mLodSquaredDistances.size(); ++lod)
764	{
765	LODBucket* lodBucket =
766	new LODBucket(this, lod, mLodSquaredDistances[lod]);
767	mLodBucketList.push_back(lodBucket);
768	// Now iterate over the meshes and assign to LODs
769	// LOD bucket will pick the right LOD to use
770	QueuedSubMeshList::iterator qi, qiend;
771	qiend = mQueuedSubMeshes.end();
772	for (qi = mQueuedSubMeshes.begin(); qi != qiend; ++qi)
773	{
774	lodBucket->assign(*qi, lod);
775	}
776	// now build
777	lodBucket->build(stencilShadows);
778	}
779
780	// Do we need to build an edge list?
781	if (stencilShadows)
782	{
783	EdgeListBuilder eb;
784	size_t vertexSet = 0;
785	LODIterator lodIterator = getLODIterator();
786	while (lodIterator.hasMoreElements())
787	{
788	LODBucket* lod = lodIterator.getNext();
789	LODBucket::MaterialIterator matIt = lod->getMaterialIterator();
790	while (matIt.hasMoreElements())
791	{
792	MaterialBucket* mat = matIt.getNext();
793	MaterialBucket::GeometryIterator geomIt =
794	mat->getGeometryIterator();
795	// Check if we have vertex programs here
796	Technique* t = mat->getMaterial()->getBestTechnique();
797	if (t)
798	{
799	Pass* p = t->getPass(0);
800	if (p)
801	{
802	if (p->hasVertexProgram())
803	{
804	mVertexProgramInUse = true;
805	}
806	}
807	}
808
809	while (geomIt.hasMoreElements())
810	{
811	GeometryBucket* geom = geomIt.getNext();
812
813	// Check we're dealing with 16-bit indexes here
814	// Since stencil shadows can only deal with 16-bit
815	// More than that and stencil is probably too CPU-heavy
816	// in any case
817	assert(geom->getIndexData()->indexBuffer->getType()
818	== HardwareIndexBuffer::IT_16BIT &&
819	"Only 16-bit indexes allowed when using stencil shadows");
820	eb.addVertexData(geom->getVertexData());
821	eb.addIndexData(geom->getIndexData(), vertexSet++);
822	}
823	}
824	}
825	mEdgeList = eb.build();
826
827	}
828
829
830	}
831	//--------------------------------------------------------------------------
832	const String& StaticGeometry::Region::getMovableType(void) const
833	{
834	static String sType = "StaticGeometry";
835	return sType;
836	}
837	//--------------------------------------------------------------------------
838	void StaticGeometry::Region::_notifyCurrentCamera(Camera* cam)
839	{
840	// Calculate squared view depth
841	Vector3 diff = cam->getDerivedPosition() - mCentre;
842	Real squaredDepth = diff.squaredLength();
843
844	// Determine whether to still render
845	Real renderingDist = mParent->getRenderingDistance();
846	if (renderingDist > 0)
847	{
848	// Max distance to still render
849	Real maxDist = renderingDist + mBoundingRadius;
850	if (squaredDepth > Math::Sqr(maxDist))
851	{
852	mBeyondFarDistance = true;
853	return;
854	}
855	}
856
857	mBeyondFarDistance = false;
858
859	// Distance from the edge of the bounding sphere
860	mCamDistanceSquared = squaredDepth - mBoundingRadius * mBoundingRadius;
861	// Clamp to 0
862	mCamDistanceSquared = std::max(static_cast<Real>(0.0), mCamDistanceSquared);
863
864	// Determine active lod
865	mCurrentLod = static_cast<ushort>(mLodSquaredDistances.size() - 1);
866	for (ushort i = 0; i < mLodSquaredDistances.size(); ++i)
867	{
868	if (mLodSquaredDistances[i] > mCamDistanceSquared)
869	{
870	mCurrentLod = i - 1;
871	break;
872	}
873	}
874
875	}
876	//--------------------------------------------------------------------------
877	const AxisAlignedBox& StaticGeometry::Region::getBoundingBox(void) const
878	{
879	return mAABB;
880	}
881	//--------------------------------------------------------------------------
882	Real StaticGeometry::Region::getBoundingRadius(void) const
883	{
884	return mBoundingRadius;
885	}
886	//--------------------------------------------------------------------------
887	void StaticGeometry::Region::_updateRenderQueue(RenderQueue* queue)
888	{
889	mLodBucketList[mCurrentLod]->addRenderables(queue, mRenderQueueID,
890	mCamDistanceSquared);
891	}
892	//--------------------------------------------------------------------------
893	bool StaticGeometry::Region::isVisible(void) const
894	{
895	return mVisible && !mBeyondFarDistance;
896	}
897	//--------------------------------------------------------------------------
898	StaticGeometry::Region::LODIterator
899	StaticGeometry::Region::getLODIterator(void)
900	{
901	return LODIterator(mLodBucketList.begin(), mLodBucketList.end());
902	}
903	//--------------------------------------------------------------------------
904	ShadowCaster::ShadowRenderableListIterator
905	StaticGeometry::Region::getShadowVolumeRenderableIterator(
906	ShadowTechnique shadowTechnique, const Light* light,
907	HardwareIndexBufferSharedPtr* indexBuffer,
908	bool extrude, Real extrusionDistance, unsigned long flags)
909	{
910
911	assert(indexBuffer && "Only external index buffers are supported right now");
912	assert((*indexBuffer)->getType() == HardwareIndexBuffer::IT_16BIT &&
913	"Only 16-bit indexes supported for now");
914
915	// Calculate the object space light details
916	Vector4 lightPos = light->getAs4DVector();
917	Matrix4 world2Obj = mParentNode->_getFullTransform().inverseAffine();
918	lightPos = world2Obj.transformAffine(lightPos);
919
920	// We need to search the edge list for silhouette edges
921	if (!mEdgeList)
922	{
923	OGRE_EXCEPT(Exception::ERR_INVALIDPARAMS,
924	"You enabled stencil shadows after the buid process!",
925	"StaticGeometry::Region::getShadowVolumeRenderableIterator");
926	}
927
928	// Init shadow renderable list if required
929	bool init = mShadowRenderables.empty();
930
931	EdgeData::EdgeGroupList::iterator egi;
932	ShadowRenderableList::iterator si, siend;
933	RegionShadowRenderable* esr = 0;
934	if (init)
935	mShadowRenderables.resize(mEdgeList->edgeGroups.size());
936
937	//bool updatedSharedGeomNormals = false;
938	siend = mShadowRenderables.end();
939	egi = mEdgeList->edgeGroups.begin();
940	for (si = mShadowRenderables.begin(); si != siend; ++si, ++egi)
941	{
942	if (init)
943	{
944	// Create a new renderable, create a separate light cap if
945	// we're using a vertex program (either for this model, or
946	// for extruding the shadow volume) since otherwise we can
947	// get depth-fighting on the light cap
948
949	*si = new RegionShadowRenderable(this, indexBuffer,
950	egi->vertexData, mVertexProgramInUse \|\| !extrude);
951	}
952	// Get shadow renderable
953	esr = static_cast<RegionShadowRenderable>(si);
954	HardwareVertexBufferSharedPtr esrPositionBuffer = esr->getPositionBuffer();
955	// Extrude vertices in software if required
956	if (extrude)
957	{
958	extrudeVertices(esrPositionBuffer,
959	egi->vertexData->vertexCount,
960	lightPos, extrusionDistance);
961
962	}
963
964	}
965	// Calc triangle light facing
966	updateEdgeListLightFacing(mEdgeList, lightPos);
967
968	// Generate indexes and update renderables
969	generateShadowVolume(mEdgeList, *indexBuffer, light,
970	mShadowRenderables, flags);
971
972
973	return ShadowRenderableListIterator(mShadowRenderables.begin(), mShadowRenderables.end());
974
975
976	}
977	//--------------------------------------------------------------------------
978	EdgeData* StaticGeometry::Region::getEdgeList(void)
979	{
980	return mEdgeList;
981	}
982	//--------------------------------------------------------------------------
983	bool StaticGeometry::Region::hasEdgeList(void)
984	{
985	return mEdgeList != 0;
986	}
987	//--------------------------------------------------------------------------
988	void StaticGeometry::Region::dump(std::ofstream& of) const
989	{
990	of << "Region " << mRegionID << std::endl;
991	of << "--------------------------" << std::endl;
992	of << "Centre: " << mCentre << std::endl;
993	of << "Local AABB: " << mAABB << std::endl;
994	of << "Bounding radius: " << mBoundingRadius << std::endl;
995	of << "Number of LODs: " << mLodBucketList.size() << std::endl;
996
997	for (LODBucketList::const_iterator i = mLodBucketList.begin();
998	i != mLodBucketList.end(); ++i)
999	{
1000	(*i)->dump(of);
1001	}
1002	of << "--------------------------" << std::endl;
1003	}
1004	//--------------------------------------------------------------------------
1005	//--------------------------------------------------------------------------
1006	StaticGeometry::Region::RegionShadowRenderable::RegionShadowRenderable(
1007	Region* parent, HardwareIndexBufferSharedPtr* indexBuffer,
1008	const VertexData* vertexData, bool createSeparateLightCap,
1009	bool isLightCap)
1010	: mParent(parent)
1011	{
1012	// Initialise render op
1013	mRenderOp.indexData = new IndexData();
1014	mRenderOp.indexData->indexBuffer = *indexBuffer;
1015	mRenderOp.indexData->indexStart = 0;
1016	// index start and count are sorted out later
1017
1018	// Create vertex data which just references position component (and 2 component)
1019	mRenderOp.vertexData = new VertexData();
1020	// Map in position data
1021	mRenderOp.vertexData->vertexDeclaration->addElement(0,0,VET_FLOAT3, VES_POSITION);
1022	ushort origPosBind =
1023	vertexData->vertexDeclaration->findElementBySemantic(VES_POSITION)->getSource();
1024	mPositionBuffer = vertexData->vertexBufferBinding->getBuffer(origPosBind);
1025	mRenderOp.vertexData->vertexBufferBinding->setBinding(0, mPositionBuffer);
1026	// Map in w-coord buffer (if present)
1027	if(!vertexData->hardwareShadowVolWBuffer.isNull())
1028	{
1029	mRenderOp.vertexData->vertexDeclaration->addElement(1,0,VET_FLOAT1, VES_TEXTURE_COORDINATES, 0);
1030	mWBuffer = vertexData->hardwareShadowVolWBuffer;
1031	mRenderOp.vertexData->vertexBufferBinding->setBinding(1, mWBuffer);
1032	}
1033	// Use same vertex start as input
1034	mRenderOp.vertexData->vertexStart = vertexData->vertexStart;
1035
1036	if (isLightCap)
1037	{
1038	// Use original vertex count, no extrusion
1039	mRenderOp.vertexData->vertexCount = vertexData->vertexCount;
1040	}
1041	else
1042	{
1043	// Vertex count must take into account the doubling of the buffer,
1044	// because second half of the buffer is the extruded copy
1045	mRenderOp.vertexData->vertexCount =
1046	vertexData->vertexCount * 2;
1047	if (createSeparateLightCap)
1048	{
1049	// Create child light cap
1050	mLightCap = new RegionShadowRenderable(parent,
1051	indexBuffer, vertexData, false, true);
1052	}
1053	}
1054	}
1055	//--------------------------------------------------------------------------
1056	StaticGeometry::Region::RegionShadowRenderable::~RegionShadowRenderable()
1057	{
1058	delete mRenderOp.indexData;
1059	delete mRenderOp.vertexData;
1060	}
1061	//--------------------------------------------------------------------------
1062	void StaticGeometry::Region::RegionShadowRenderable::getWorldTransforms(
1063	Matrix4* xform) const
1064	{
1065	// pretransformed
1066	*xform = mParent->_getParentNodeFullTransform();
1067	}
1068	//--------------------------------------------------------------------------
1069	const Quaternion&
1070	StaticGeometry::Region::RegionShadowRenderable::getWorldOrientation(void) const
1071	{
1072	return mParent->getParentNode()->_getDerivedOrientation();
1073	}
1074	//--------------------------------------------------------------------------
1075	const Vector3&
1076	StaticGeometry::Region::RegionShadowRenderable::getWorldPosition(void) const
1077	{
1078	return mParent->getCentre();
1079	}
1080	//--------------------------------------------------------------------------
1081	//--------------------------------------------------------------------------
1082	StaticGeometry::LODBucket::LODBucket(Region* parent, unsigned short lod,
1083	Real lodDist)
1084	: mParent(parent), mLod(lod), mSquaredDistance(lodDist)
1085	{
1086	}
1087	//--------------------------------------------------------------------------
1088	StaticGeometry::LODBucket::~LODBucket()
1089	{
1090	// delete
1091	for (MaterialBucketMap::iterator i = mMaterialBucketMap.begin();
1092	i != mMaterialBucketMap.end(); ++i)
1093	{
1094	delete i->second;
1095	}
1096	mMaterialBucketMap.clear();
1097	for(QueuedGeometryList::iterator qi = mQueuedGeometryList.begin();
1098	qi != mQueuedGeometryList.end(); ++qi)
1099	{
1100	delete *qi;
1101	}
1102	mQueuedGeometryList.clear();
1103
1104	// no need to delete queued meshes, these are managed in StaticGeometry
1105	}
1106	//--------------------------------------------------------------------------
1107	void StaticGeometry::LODBucket::assign(QueuedSubMesh* qmesh, ushort atLod)
1108	{
1109	QueuedGeometry* q = new QueuedGeometry();
1110	mQueuedGeometryList.push_back(q);
1111	q->position = qmesh->position;
1112	q->orientation = qmesh->orientation;
1113	q->scale = qmesh->scale;
1114	if (qmesh->geometryLodList->size() > atLod)
1115	{
1116	// This submesh has enough lods, use the right one
1117	q->geometry = &(*qmesh->geometryLodList)[atLod];
1118	}
1119	else
1120	{
1121	// Not enough lods, use the lowest one we have
1122	q->geometry =
1123	&(*qmesh->geometryLodList)[qmesh->geometryLodList->size() - 1];
1124	}
1125	// Locate a material bucket
1126	MaterialBucket* mbucket = 0;
1127	MaterialBucketMap::iterator m =
1128	mMaterialBucketMap.find(qmesh->materialName);
1129	if (m != mMaterialBucketMap.end())
1130	{
1131	mbucket = m->second;
1132	}
1133	else
1134	{
1135	mbucket = new MaterialBucket(this, qmesh->materialName);
1136	mMaterialBucketMap[qmesh->materialName] = mbucket;
1137	}
1138	mbucket->assign(q);
1139	}
1140	//--------------------------------------------------------------------------
1141	void StaticGeometry::LODBucket::build(bool stencilShadows)
1142	{
1143	// Just pass this on to child buckets
1144	for (MaterialBucketMap::iterator i = mMaterialBucketMap.begin();
1145	i != mMaterialBucketMap.end(); ++i)
1146	{
1147	i->second->build(stencilShadows);
1148	}
1149	}
1150	//--------------------------------------------------------------------------
1151	void StaticGeometry::LODBucket::addRenderables(RenderQueue* queue,
1152	uint8 group, Real camDistanceSquared)
1153	{
1154	// Just pass this on to child buckets
1155	MaterialBucketMap::iterator i, iend;
1156	iend = mMaterialBucketMap.end();
1157	for (i = mMaterialBucketMap.begin(); i != iend; ++i)
1158	{
1159	i->second->addRenderables(queue, group, camDistanceSquared);
1160	}
1161	}
1162	//--------------------------------------------------------------------------
1163	StaticGeometry::LODBucket::MaterialIterator
1164	StaticGeometry::LODBucket::getMaterialIterator(void)
1165	{
1166	return MaterialIterator(
1167	mMaterialBucketMap.begin(), mMaterialBucketMap.end());
1168	}
1169	//--------------------------------------------------------------------------
1170	void StaticGeometry::LODBucket::dump(std::ofstream& of) const
1171	{
1172	of << "LOD Bucket " << mLod << std::endl;
1173	of << "------------------" << std::endl;
1174	of << "Distance: " << Math::Sqrt(mSquaredDistance) << std::endl;
1175	of << "Number of Materials: " << mMaterialBucketMap.size() << std::endl;
1176	for (MaterialBucketMap::const_iterator i = mMaterialBucketMap.begin();
1177	i != mMaterialBucketMap.end(); ++i)
1178	{
1179	i->second->dump(of);
1180	}
1181	of << "------------------" << std::endl;
1182
1183	}
1184	//--------------------------------------------------------------------------
1185	//--------------------------------------------------------------------------
1186	StaticGeometry::MaterialBucket::MaterialBucket(LODBucket* parent,
1187	const String& materialName)
1188	: mParent(parent), mMaterialName(materialName)
1189	{
1190	}
1191	//--------------------------------------------------------------------------
1192	StaticGeometry::MaterialBucket::~MaterialBucket()
1193	{
1194	// delete
1195	for (GeometryBucketList::iterator i = mGeometryBucketList.begin();
1196	i != mGeometryBucketList.end(); ++i)
1197	{
1198	delete *i;
1199	}
1200	mGeometryBucketList.clear();
1201
1202	// no need to delete queued meshes, these are managed in StaticGeometry
1203	}
1204	//--------------------------------------------------------------------------
1205	void StaticGeometry::MaterialBucket::assign(QueuedGeometry* qgeom)
1206	{
1207	// Look up any current geometry
1208	String formatString = getGeometryFormatString(qgeom->geometry);
1209	CurrentGeometryMap::iterator gi = mCurrentGeometryMap.find(formatString);
1210	bool newBucket = true;
1211	if (gi != mCurrentGeometryMap.end())
1212	{
1213	// Found existing geometry, try to assign
1214	newBucket = !gi->second->assign(qgeom);
1215	// Note that this bucket will be replaced as the 'current'
1216	// for this format string below since it's out of space
1217	}
1218	// Do we need to create a new one?
1219	if (newBucket)
1220	{
1221	GeometryBucket* gbucket = new GeometryBucket(this, formatString,
1222	qgeom->geometry->vertexData, qgeom->geometry->indexData);
1223	// Add to main list
1224	mGeometryBucketList.push_back(gbucket);
1225	// Also index in 'current' list
1226	mCurrentGeometryMap[formatString] = gbucket;
1227	if (!gbucket->assign(qgeom))
1228	{
1229	OGRE_EXCEPT(Exception::ERR_INTERNAL_ERROR,
1230	"Somehow we couldn't fit the requested geometry even in a "
1231	"brand new GeometryBucket!! Must be a bug, please report.",
1232	"StaticGeometry::MaterialBucket::assign");
1233	}
1234	}
1235	}
1236	//--------------------------------------------------------------------------
1237	void StaticGeometry::MaterialBucket::build(bool stencilShadows)
1238	{
1239	mMaterial = MaterialManager::getSingleton().getByName(mMaterialName);
1240	if (mMaterial.isNull())
1241	{
1242	OGRE_EXCEPT(Exception::ERR_ITEM_NOT_FOUND,
1243	"Material '" + mMaterialName + "' not found.",
1244	"StaticGeometry::MaterialBucket::build");
1245	}
1246	mMaterial->load();
1247	// tell the geometry buckets to build
1248	for (GeometryBucketList::iterator i = mGeometryBucketList.begin();
1249	i != mGeometryBucketList.end(); ++i)
1250	{
1251	(*i)->build(stencilShadows);
1252	}
1253	}
1254	//--------------------------------------------------------------------------
1255	void StaticGeometry::MaterialBucket::addRenderables(RenderQueue* queue,
1256	uint8 group, Real camDistanceSquared)
1257	{
1258	// Determine the current material technique
1259	mTechnique = mMaterial->getBestTechnique(
1260	mMaterial->getLodIndexSquaredDepth(camDistanceSquared));
1261
1262	GeometryBucketList::iterator i, iend;
1263	iend = mGeometryBucketList.end();
1264	for (i = mGeometryBucketList.begin(); i != iend; ++i)
1265	{
1266	queue->addRenderable(*i, group);
1267	}
1268
1269	}
1270	//--------------------------------------------------------------------------
1271	String StaticGeometry::MaterialBucket::getGeometryFormatString(
1272	SubMeshLodGeometryLink* geom)
1273	{
1274	// Formulate an identifying string for the geometry format
1275	// Must take into account the vertex declaration and the index type
1276	// Format is (all lines separated by '\|'):
1277	// Index type
1278	// Vertex element (repeating)
1279	// source
1280	// semantic
1281	// type
1282	StringUtil::StrStreamType str;
1283
1284	str << geom->indexData->indexBuffer->getType() << "\|";
1285	const VertexDeclaration::VertexElementList& elemList =
1286	geom->vertexData->vertexDeclaration->getElements();
1287	VertexDeclaration::VertexElementList::const_iterator ei, eiend;
1288	eiend = elemList.end();
1289	for (ei = elemList.begin(); ei != eiend; ++ei)
1290	{
1291	const VertexElement& elem = *ei;
1292	str << elem.getSource() << "\|";
1293	str << elem.getSource() << "\|";
1294	str << elem.getSemantic() << "\|";
1295	str << elem.getType() << "\|";
1296	}
1297
1298	return str.str();
1299
1300	}
1301	//--------------------------------------------------------------------------
1302	StaticGeometry::MaterialBucket::GeometryIterator
1303	StaticGeometry::MaterialBucket::getGeometryIterator(void)
1304	{
1305	return GeometryIterator(
1306	mGeometryBucketList.begin(), mGeometryBucketList.end());
1307	}
1308	//--------------------------------------------------------------------------
1309	void StaticGeometry::MaterialBucket::dump(std::ofstream& of) const
1310	{
1311	of << "Material Bucket " << mMaterialName << std::endl;
1312	of << "--------------------------------------------------" << std::endl;
1313	of << "Geometry buckets: " << mGeometryBucketList.size() << std::endl;
1314	for (GeometryBucketList::const_iterator i = mGeometryBucketList.begin();
1315	i != mGeometryBucketList.end(); ++i)
1316	{
1317	(*i)->dump(of);
1318	}
1319	of << "--------------------------------------------------" << std::endl;
1320
1321	}
1322	//--------------------------------------------------------------------------
1323	//--------------------------------------------------------------------------
1324	StaticGeometry::GeometryBucket::GeometryBucket(MaterialBucket* parent,
1325	const String& formatString, const VertexData* vData,
1326	const IndexData* iData)
1327	: Renderable(), mParent(parent), mFormatString(formatString)
1328	{
1329	// Clone the structure from the example
1330	mVertexData = vData->clone(false);
1331	mIndexData = iData->clone(false);
1332	mVertexData->vertexCount = 0;
1333	mVertexData->vertexStart = 0;
1334	mIndexData->indexCount = 0;
1335	mIndexData->indexStart = 0;
1336	mIndexType = iData->indexBuffer->getType();
1337	// Derive the max vertices
1338	if (mIndexType == HardwareIndexBuffer::IT_32BIT)
1339	{
1340	mMaxVertexIndex = 0xFFFFFFFF;
1341	}
1342	else
1343	{
1344	mMaxVertexIndex = 0xFFFF;
1345	}
1346
1347	// Check to see if we have blend indices / blend weights
1348	// remove them if so, they can try to blend non-existent bones!
1349	const VertexElement* blendIndices =
1350	mVertexData->vertexDeclaration->findElementBySemantic(VES_BLEND_INDICES);
1351	const VertexElement* blendWeights =
1352	mVertexData->vertexDeclaration->findElementBySemantic(VES_BLEND_WEIGHTS);
1353	if (blendIndices && blendWeights)
1354	{
1355	assert(blendIndices->getSource() == blendWeights->getSource()
1356	&& "Blend indices and weights should be in the same buffer");
1357	// Get the source
1358	ushort source = blendIndices->getSource();
1359	assert(blendIndices->getSize() + blendWeights->getSize() ==
1360	mVertexData->vertexBufferBinding->getBuffer(source)->getVertexSize()
1361	&& "Blend indices and blend buffers should have buffer to themselves!");
1362	// Unset the buffer
1363	mVertexData->vertexBufferBinding->unsetBinding(source);
1364	// Remove the elements
1365	mVertexData->vertexDeclaration->removeElement(VES_BLEND_INDICES);
1366	mVertexData->vertexDeclaration->removeElement(VES_BLEND_WEIGHTS);
1367	// Close gaps in bindings for effective and safely
1368	mVertexData->closeGapsInBindings();
1369	}
1370
1371
1372	}
1373	//--------------------------------------------------------------------------
1374	StaticGeometry::GeometryBucket::~GeometryBucket()
1375	{
1376	delete mVertexData;
1377	delete mIndexData;
1378	}
1379	//--------------------------------------------------------------------------
1380	const MaterialPtr& StaticGeometry::GeometryBucket::getMaterial(void) const
1381	{
1382	return mParent->getMaterial();
1383	}
1384	//--------------------------------------------------------------------------
1385	Technique* StaticGeometry::GeometryBucket::getTechnique(void) const
1386	{
1387	return mParent->getCurrentTechnique();
1388	}
1389	//--------------------------------------------------------------------------
1390	void StaticGeometry::GeometryBucket::getRenderOperation(RenderOperation& op)
1391	{
1392	op.indexData = mIndexData;
1393	op.operationType = RenderOperation::OT_TRIANGLE_LIST;
1394	op.srcRenderable = this;
1395	op.useIndexes = true;
1396	op.vertexData = mVertexData;
1397	}
1398	//--------------------------------------------------------------------------
1399	void StaticGeometry::GeometryBucket::getWorldTransforms(Matrix4* xform) const
1400	{
1401	// Should be the identity transform, but lets allow transformation of the
1402	// nodes the regions are attached to for kicks
1403	*xform = mParent->getParent()->getParent()->_getParentNodeFullTransform();
1404	}
1405	//--------------------------------------------------------------------------
1406	const Quaternion& StaticGeometry::GeometryBucket::getWorldOrientation(void) const
1407	{
1408	return Quaternion::IDENTITY;
1409	}
1410	//--------------------------------------------------------------------------
1411	const Vector3& StaticGeometry::GeometryBucket::getWorldPosition(void) const
1412	{
1413	return mParent->getParent()->getParent()->getCentre();
1414	}
1415	//--------------------------------------------------------------------------
1416	Real StaticGeometry::GeometryBucket::getSquaredViewDepth(const Camera* cam) const
1417	{
1418	return mParent->getParent()->getSquaredDistance();
1419	}
1420	//--------------------------------------------------------------------------
1421	const LightList& StaticGeometry::GeometryBucket::getLights(void) const
1422	{
1423	return mParent->getParent()->getParent()->queryLights();
1424	}
1425	//--------------------------------------------------------------------------
1426	bool StaticGeometry::GeometryBucket::getCastsShadows(void) const
1427	{
1428	return mParent->getParent()->getParent()->getCastShadows();
1429	}
1430	//--------------------------------------------------------------------------
1431	bool StaticGeometry::GeometryBucket::assign(QueuedGeometry* qgeom)
1432	{
1433	// Do we have enough space?
1434	if (mVertexData->vertexCount + qgeom->geometry->vertexData->vertexCount
1435	> mMaxVertexIndex)
1436	{
1437	return false;
1438	}
1439
1440	mQueuedGeometry.push_back(qgeom);
1441	mVertexData->vertexCount += qgeom->geometry->vertexData->vertexCount;
1442	mIndexData->indexCount += qgeom->geometry->indexData->indexCount;
1443
1444	return true;
1445	}
1446	//--------------------------------------------------------------------------
1447	void StaticGeometry::GeometryBucket::build(bool stencilShadows)
1448	{
1449	// Ok, here's where we transfer the vertices and indexes to the shared
1450	// buffers
1451	// Shortcuts
1452	VertexDeclaration* dcl = mVertexData->vertexDeclaration;
1453	VertexBufferBinding* binds = mVertexData->vertexBufferBinding;
1454
1455	// create index buffer, and lock
1456	mIndexData->indexBuffer = HardwareBufferManager::getSingleton()
1457	.createIndexBuffer(mIndexType, mIndexData->indexCount,
1458	HardwareBuffer::HBU_STATIC_WRITE_ONLY);
1459	uint32* p32Dest = 0;
1460	uint16* p16Dest = 0;
1461	if (mIndexType == HardwareIndexBuffer::IT_32BIT)
1462	{
1463	p32Dest = static_cast<uint32*>(
1464	mIndexData->indexBuffer->lock(HardwareBuffer::HBL_DISCARD));
1465	}
1466	else
1467	{
1468	p16Dest = static_cast<uint16*>(
1469	mIndexData->indexBuffer->lock(HardwareBuffer::HBL_DISCARD));
1470	}
1471	// create all vertex buffers, and lock
1472	ushort b;
1473	ushort posBufferIdx = dcl->findElementBySemantic(VES_POSITION)->getSource();
1474
1475	std::vector<uchar*> destBufferLocks;
1476	std::vector<VertexDeclaration::VertexElementList> bufferElements;
1477	for (b = 0; b < binds->getBufferCount(); ++b)
1478	{
1479	size_t vertexCount = mVertexData->vertexCount;
1480	// Need to double the vertex count for the position buffer
1481	// if we're doing stencil shadows
1482	if (stencilShadows && b == posBufferIdx)
1483	{
1484	vertexCount = vertexCount * 2;
1485	assert(vertexCount <= mMaxVertexIndex &&
1486	"Index range exceeded when using stencil shadows, consider "
1487	"reducing your region size or reducing poly count");
1488	}
1489	HardwareVertexBufferSharedPtr vbuf =
1490	HardwareBufferManager::getSingleton().createVertexBuffer(
1491	dcl->getVertexSize(b),
1492	vertexCount,
1493	HardwareBuffer::HBU_STATIC_WRITE_ONLY);
1494	binds->setBinding(b, vbuf);
1495	uchar* pLock = static_cast<uchar*>(
1496	vbuf->lock(HardwareBuffer::HBL_DISCARD));
1497	destBufferLocks.push_back(pLock);
1498	// Pre-cache vertex elements per buffer
1499	bufferElements.push_back(dcl->findElementsBySource(b));
1500	}
1501
1502
1503	// Iterate over the geometry items
1504	size_t indexOffset = 0;
1505	QueuedGeometryList::iterator gi, giend;
1506	giend = mQueuedGeometry.end();
1507	Vector3 regionCentre = mParent->getParent()->getParent()->getCentre();
1508	for (gi = mQueuedGeometry.begin(); gi != giend; ++gi)
1509	{
1510	QueuedGeometry* geom = *gi;
1511	// Copy indexes across with offset
1512	IndexData* srcIdxData = geom->geometry->indexData;
1513	if (mIndexType == HardwareIndexBuffer::IT_32BIT)
1514	{
1515	// Lock source indexes
1516	uint32* pSrc = static_cast<uint32*>(
1517	srcIdxData->indexBuffer->lock(
1518	srcIdxData->indexStart,
1519	srcIdxData->indexCount * srcIdxData->indexBuffer->getIndexSize(),
1520	HardwareBuffer::HBL_READ_ONLY));
1521
1522	copyIndexes(pSrc, p32Dest, srcIdxData->indexCount, indexOffset);
1523	p32Dest += srcIdxData->indexCount;
1524	srcIdxData->indexBuffer->unlock();
1525	}
1526	else
1527	{
1528	// Lock source indexes
1529	uint16* pSrc = static_cast<uint16*>(
1530	srcIdxData->indexBuffer->lock(
1531	srcIdxData->indexStart,
1532	srcIdxData->indexCount * srcIdxData->indexBuffer->getIndexSize(),
1533	HardwareBuffer::HBL_READ_ONLY));
1534
1535	copyIndexes(pSrc, p16Dest, srcIdxData->indexCount, indexOffset);
1536	p16Dest += srcIdxData->indexCount;
1537	srcIdxData->indexBuffer->unlock();
1538	}
1539
1540	// Now deal with vertex buffers
1541	// we can rely on buffer counts / formats being the same
1542	VertexData* srcVData = geom->geometry->vertexData;
1543	VertexBufferBinding* srcBinds = srcVData->vertexBufferBinding;
1544	for (b = 0; b < binds->getBufferCount(); ++b)
1545	{
1546	// lock source
1547	HardwareVertexBufferSharedPtr srcBuf =
1548	srcBinds->getBuffer(b);
1549	uchar* pSrcBase = static_cast<uchar*>(
1550	srcBuf->lock(HardwareBuffer::HBL_READ_ONLY));
1551	// Get buffer lock pointer, we'll update this later
1552	uchar* pDstBase = destBufferLocks[b];
1553	size_t bufInc = srcBuf->getVertexSize();
1554
1555	// Iterate over vertices
1556	float pSrcReal, pDstReal;
1557	Vector3 tmp;
1558	for (size_t v = 0; v < srcVData->vertexCount; ++v)
1559	{
1560	// Iterate over vertex elements
1561	VertexDeclaration::VertexElementList& elems =
1562	bufferElements[b];
1563	VertexDeclaration::VertexElementList::iterator ei;
1564	for (ei = elems.begin(); ei != elems.end(); ++ei)
1565	{
1566	VertexElement& elem = *ei;
1567	elem.baseVertexPointerToElement(pSrcBase, &pSrcReal);
1568	elem.baseVertexPointerToElement(pDstBase, &pDstReal);
1569	switch (elem.getSemantic())
1570	{
1571	case VES_POSITION:
1572	tmp.x = *pSrcReal++;
1573	tmp.y = *pSrcReal++;
1574	tmp.z = *pSrcReal++;
1575	// transform
1576	tmp = (geom->orientation * (tmp * geom->scale)) +
1577	geom->position;
1578	// Adjust for region centre
1579	tmp -= regionCentre;
1580	*pDstReal++ = tmp.x;
1581	*pDstReal++ = tmp.y;
1582	*pDstReal++ = tmp.z;
1583	break;
1584	case VES_NORMAL:
1585	case VES_TANGENT:
1586	case VES_BINORMAL:
1587	tmp.x = *pSrcReal++;
1588	tmp.y = *pSrcReal++;
1589	tmp.z = *pSrcReal++;
1590	// scale (invert)
1591	tmp = tmp / geom->scale;
1592	tmp.normalise();
1593	// rotation
1594	tmp = geom->orientation * tmp;
1595	*pDstReal++ = tmp.x;
1596	*pDstReal++ = tmp.y;
1597	*pDstReal++ = tmp.z;
1598	break;
1599	default:
1600	// just raw copy
1601	memcpy(pDstReal, pSrcReal,
1602	VertexElement::getTypeSize(elem.getType()));
1603	break;
1604	};
1605
1606	}
1607
1608	// Increment both pointers
1609	pDstBase += bufInc;
1610	pSrcBase += bufInc;
1611
1612	}
1613
1614	// Update pointer
1615	destBufferLocks[b] = pDstBase;
1616	srcBuf->unlock();
1617	}
1618
1619	indexOffset += geom->geometry->vertexData->vertexCount;
1620	}
1621
1622	// Unlock everything
1623	mIndexData->indexBuffer->unlock();
1624	for (b = 0; b < binds->getBufferCount(); ++b)
1625	{
1626	binds->getBuffer(b)->unlock();
1627	}
1628
1629	// If we're dealing with stencil shadows, copy the position data from
1630	// the early half of the buffer to the latter part
1631	if (stencilShadows)
1632	{
1633	HardwareVertexBufferSharedPtr buf = binds->getBuffer(posBufferIdx);
1634	void* pSrc = buf->lock(HardwareBuffer::HBL_NORMAL);
1635	// Point dest at second half (remember vertexcount is original count)
1636	void* pDest = static_cast<uchar*>(pSrc) +
1637	buf->getVertexSize() * mVertexData->vertexCount;
1638	memcpy(pDest, pSrc, buf->getVertexSize() * mVertexData->vertexCount);
1639	buf->unlock();
1640
1641	// Also set up hardware W buffer if appropriate
1642	RenderSystem* rend = Root::getSingleton().getRenderSystem();
1643	if (rend && rend->getCapabilities()->hasCapability(RSC_VERTEX_PROGRAM))
1644	{
1645	buf = HardwareBufferManager::getSingleton().createVertexBuffer(
1646	sizeof(float), mVertexData->vertexCount * 2,
1647	HardwareBuffer::HBU_STATIC_WRITE_ONLY, false);
1648	// Fill the first half with 1.0, second half with 0.0
1649	float pW = static_cast<float>(
1650	buf->lock(HardwareBuffer::HBL_DISCARD));
1651	size_t v;
1652	for (v = 0; v < mVertexData->vertexCount; ++v)
1653	{
1654	*pW++ = 1.0f;
1655	}
1656	for (v = 0; v < mVertexData->vertexCount; ++v)
1657	{
1658	*pW++ = 0.0f;
1659	}
1660	buf->unlock();
1661	mVertexData->hardwareShadowVolWBuffer = buf;
1662	}
1663	}
1664
1665	}
1666	//--------------------------------------------------------------------------
1667	void StaticGeometry::GeometryBucket::dump(std::ofstream& of) const
1668	{
1669	of << "Geometry Bucket" << std::endl;
1670	of << "---------------" << std::endl;
1671	of << "Format string: " << mFormatString << std::endl;
1672	of << "Geometry items: " << mQueuedGeometry.size() << std::endl;
1673	of << "Vertex count: " << mVertexData->vertexCount << std::endl;
1674	of << "Index count: " << mIndexData->indexCount << std::endl;
1675	of << "---------------" << std::endl;
1676
1677	}
1678	//--------------------------------------------------------------------------
1679
1680	}
1681

Note: See TracBrowser for help on using the repository browser.

Context Navigation

source: downloads/ogre/OgreMain/src/OgreStaticGeometry.cpp @ 44

Download in other formats: