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OgreVertexIndexData.cpp @ 692

Revision 692, 31.5 KB checked in by mattausch, 18 years ago (diff)
adding ogre 1.2 and dependencies

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) 2000-2005 The OGRE Team
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	*/
25	#include "OgreStableHeaders.h"
26	#include "OgreVertexIndexData.h"
27	#include "OgreHardwareBufferManager.h"
28	#include "OgreHardwareVertexBuffer.h"
29	#include "OgreHardwareIndexBuffer.h"
30	#include "OgreVector3.h"
31	#include "OgreAxisAlignedBox.h"
32	#include "OgreRoot.h"
33	#include "OgreRenderSystem.h"
34	#include "OgreException.h"
35
36	namespace Ogre {
37
38	//-----------------------------------------------------------------------
39	VertexData::VertexData()
40	{
41	vertexBufferBinding = HardwareBufferManager::getSingleton().
42	createVertexBufferBinding();
43	vertexDeclaration = HardwareBufferManager::getSingleton().
44	createVertexDeclaration();
45	vertexCount = 0;
46	vertexStart = 0;
47	hwAnimDataItemsUsed = 0;
48
49	}
50	//-----------------------------------------------------------------------
51	VertexData::~VertexData()
52	{
53	HardwareBufferManager::getSingleton().
54	destroyVertexBufferBinding(vertexBufferBinding);
55	HardwareBufferManager::getSingleton().destroyVertexDeclaration(vertexDeclaration);
56
57	}
58	//-----------------------------------------------------------------------
59	VertexData* VertexData::clone(bool copyData) const
60	{
61	VertexData* dest = new VertexData();
62
63	// Copy vertex buffers in turn
64	const VertexBufferBinding::VertexBufferBindingMap bindings =
65	this->vertexBufferBinding->getBindings();
66	VertexBufferBinding::VertexBufferBindingMap::const_iterator vbi, vbend;
67	vbend = bindings.end();
68	for (vbi = bindings.begin(); vbi != vbend; ++vbi)
69	{
70	HardwareVertexBufferSharedPtr srcbuf = vbi->second;
71	HardwareVertexBufferSharedPtr dstBuf;
72	if (copyData)
73	{
74	// create new buffer with the same settings
75	dstBuf =
76	HardwareBufferManager::getSingleton().createVertexBuffer(
77	srcbuf->getVertexSize(), srcbuf->getNumVertices(), srcbuf->getUsage(),
78	srcbuf->hasShadowBuffer());
79
80	// copy data
81	dstBuf->copyData(*srcbuf, 0, 0, srcbuf->getSizeInBytes(), true);
82	}
83	else
84	{
85	// don't copy, point at existing buffer
86	dstBuf = srcbuf;
87	}
88
89	// Copy binding
90	dest->vertexBufferBinding->setBinding(vbi->first, dstBuf);
91	}
92
93	// Basic vertex info
94	dest->vertexStart = this->vertexStart;
95	dest->vertexCount = this->vertexCount;
96	// Copy elements
97	const VertexDeclaration::VertexElementList elems =
98	this->vertexDeclaration->getElements();
99	VertexDeclaration::VertexElementList::const_iterator ei, eiend;
100	eiend = elems.end();
101	for (ei = elems.begin(); ei != eiend; ++ei)
102	{
103	dest->vertexDeclaration->addElement(
104	ei->getSource(),
105	ei->getOffset(),
106	ei->getType(),
107	ei->getSemantic(),
108	ei->getIndex() );
109	}
110
111	// Copy hardware shadow buffer if set up
112	if (!hardwareShadowVolWBuffer.isNull())
113	{
114	dest->hardwareShadowVolWBuffer =
115	HardwareBufferManager::getSingleton().createVertexBuffer(
116	hardwareShadowVolWBuffer->getVertexSize(),
117	hardwareShadowVolWBuffer->getNumVertices(),
118	hardwareShadowVolWBuffer->getUsage(),
119	hardwareShadowVolWBuffer->hasShadowBuffer());
120
121	// copy data
122	dest->hardwareShadowVolWBuffer->copyData(
123	*hardwareShadowVolWBuffer, 0, 0,
124	hardwareShadowVolWBuffer->getSizeInBytes(), true);
125	}
126
127	// copy anim data
128	dest->hwAnimationDataList = hwAnimationDataList;
129	dest->hwAnimDataItemsUsed = hwAnimDataItemsUsed;
130
131
132	return dest;
133	}
134	//-----------------------------------------------------------------------
135	void VertexData::prepareForShadowVolume(void)
136	{
137	/* NOTE
138	I would dearly, dearly love to just use a 4D position buffer in order to
139	store the extra 'w' value I need to differentiate between extruded and
140	non-extruded sections of the buffer, so that vertex programs could use that.
141	Hey, it works fine for GL. However, D3D9 in it's infinite stupidity, does not
142	support 4d position vertices in the fixed-function pipeline. If you use them,
143	you just see nothing. Since we can't know whether the application is going to use
144	fixed function or vertex programs, we have to stick to 3d position vertices and
145	store the 'w' in a separate 1D texture coordinate buffer, which is only used
146	when rendering the shadow.
147	*/
148
149	// Upfront, lets check whether we have vertex program capability
150	RenderSystem* rend = Root::getSingleton().getRenderSystem();
151	bool useVertexPrograms = false;
152	if (rend && rend->getCapabilities()->hasCapability(RSC_VERTEX_PROGRAM))
153	{
154	useVertexPrograms = true;
155	}
156
157
158	// Look for a position element
159	const VertexElement* posElem = vertexDeclaration->findElementBySemantic(VES_POSITION);
160	if (posElem)
161	{
162	size_t v;
163	unsigned posOldSource = posElem->getSource();
164
165	HardwareVertexBufferSharedPtr vbuf = vertexBufferBinding->getBuffer(posOldSource);
166	bool wasSharedBuffer = false;
167	// Are there other elements in the buffer except for the position?
168	if (vbuf->getVertexSize() > posElem->getSize())
169	{
170	// We need to create another buffer to contain the remaining elements
171	// Most drivers don't like gaps in the declaration, and in any case it's waste
172	wasSharedBuffer = true;
173	}
174	HardwareVertexBufferSharedPtr newPosBuffer, newRemainderBuffer;
175	if (wasSharedBuffer)
176	{
177	newRemainderBuffer = HardwareBufferManager::getSingleton().createVertexBuffer(
178	vbuf->getVertexSize() - posElem->getSize(), vbuf->getNumVertices(), vbuf->getUsage(),
179	vbuf->hasShadowBuffer());
180	}
181	// Allocate new position buffer, will be FLOAT3 and 2x the size
182	size_t oldVertexCount = vbuf->getNumVertices();
183	size_t newVertexCount = oldVertexCount * 2;
184	newPosBuffer = HardwareBufferManager::getSingleton().createVertexBuffer(
185	VertexElement::getTypeSize(VET_FLOAT3), newVertexCount, vbuf->getUsage(),
186	vbuf->hasShadowBuffer());
187
188	// Iterate over the old buffer, copying the appropriate elements and initialising the rest
189	float* pSrc;
190	unsigned char pBaseSrc = static_cast<unsigned char>(
191	vbuf->lock(HardwareBuffer::HBL_READ_ONLY));
192	// Point first destination pointer at the start of the new position buffer,
193	// the other one half way along
194	float pDest = static_cast<float>(newPosBuffer->lock(HardwareBuffer::HBL_DISCARD));
195	float* pDest2 = pDest + oldVertexCount * 3;
196
197	// Precalculate any dimensions of vertex areas outside the position
198	size_t prePosVertexSize, postPosVertexSize, postPosVertexOffset;
199	unsigned char *pBaseDestRem = 0;
200	if (wasSharedBuffer)
201	{
202	pBaseDestRem = static_cast<unsigned char*>(
203	newRemainderBuffer->lock(HardwareBuffer::HBL_DISCARD));
204	prePosVertexSize = posElem->getOffset();
205	postPosVertexOffset = prePosVertexSize + posElem->getSize();
206	postPosVertexSize = vbuf->getVertexSize() - postPosVertexOffset;
207	// the 2 separate bits together should be the same size as the remainder buffer vertex
208	assert (newRemainderBuffer->getVertexSize() == prePosVertexSize + postPosVertexSize);
209
210	// Iterate over the vertices
211	for (v = 0; v < oldVertexCount; ++v)
212	{
213	// Copy position, into both buffers
214	posElem->baseVertexPointerToElement(pBaseSrc, &pSrc);
215	pDest++ = pDest2++ = *pSrc++;
216	pDest++ = pDest2++ = *pSrc++;
217	pDest++ = pDest2++ = *pSrc++;
218
219	// now deal with any other elements
220	// Basically we just memcpy the vertex excluding the position
221	if (prePosVertexSize > 0)
222	memcpy(pBaseDestRem, pBaseSrc, prePosVertexSize);
223	if (postPosVertexSize > 0)
224	memcpy(pBaseDestRem + prePosVertexSize,
225	pBaseSrc + postPosVertexOffset, postPosVertexSize);
226	pBaseDestRem += newRemainderBuffer->getVertexSize();
227
228	pBaseSrc += vbuf->getVertexSize();
229
230	} // next vertex
231	}
232	else
233	{
234	// Unshared buffer, can block copy the whole thing
235	memcpy(pDest, pBaseSrc, vbuf->getSizeInBytes());
236	memcpy(pDest2, pBaseSrc, vbuf->getSizeInBytes());
237	}
238
239	vbuf->unlock();
240	newPosBuffer->unlock();
241	if (wasSharedBuffer)
242	newRemainderBuffer->unlock();
243
244	// At this stage, he original vertex buffer is going to be destroyed
245	// So we should force the deallocation of any temporary copies
246	HardwareBufferManager::getSingleton()._forceReleaseBufferCopies(vbuf);
247
248	if (useVertexPrograms)
249	{
250	// Now it's time to set up the w buffer
251	hardwareShadowVolWBuffer = HardwareBufferManager::getSingleton().createVertexBuffer(
252	sizeof(float), newVertexCount, HardwareBuffer::HBU_STATIC_WRITE_ONLY, false);
253	// Fill the first half with 1.0, second half with 0.0
254	pDest = static_cast<float*>(
255	hardwareShadowVolWBuffer->lock(HardwareBuffer::HBL_DISCARD));
256	for (v = 0; v < oldVertexCount; ++v)
257	{
258	*pDest++ = 1.0f;
259	}
260	for (v = 0; v < oldVertexCount; ++v)
261	{
262	*pDest++ = 0.0f;
263	}
264	hardwareShadowVolWBuffer->unlock();
265	}
266
267	unsigned short newPosBufferSource;
268	if (wasSharedBuffer)
269	{
270	// Get the a new buffer binding index
271	newPosBufferSource= vertexBufferBinding->getNextIndex();
272	// Re-bind the old index to the remainder buffer
273	vertexBufferBinding->setBinding(posOldSource, newRemainderBuffer);
274	}
275	else
276	{
277	// We can just re-use the same source idex for the new position buffer
278	newPosBufferSource = posOldSource;
279	}
280	// Bind the new position buffer
281	vertexBufferBinding->setBinding(newPosBufferSource, newPosBuffer);
282
283	// Now, alter the vertex declaration to change the position source
284	// and the offsets of elements using the same buffer
285	VertexDeclaration::VertexElementList::const_iterator elemi =
286	vertexDeclaration->getElements().begin();
287	VertexDeclaration::VertexElementList::const_iterator elemiend =
288	vertexDeclaration->getElements().end();
289	unsigned short idx;
290	for(idx = 0; elemi != elemiend; ++elemi, ++idx)
291	{
292	if (&(*elemi) == posElem)
293	{
294	// Modify position to point at new position buffer
295	vertexDeclaration->modifyElement(
296	idx,
297	newPosBufferSource, // new source buffer
298	0, // no offset now
299	VET_FLOAT3,
300	VES_POSITION);
301	}
302	else if (wasSharedBuffer &&
303	elemi->getSource() == posOldSource &&
304	elemi->getOffset() > prePosVertexSize )
305	{
306	// This element came after position, remove the position's
307	// size
308	vertexDeclaration->modifyElement(
309	idx,
310	posOldSource, // same old source
311	elemi->getOffset() - posElem->getSize(), // less offset now
312	elemi->getType(),
313	elemi->getSemantic(),
314	elemi->getIndex());
315
316	}
317
318	}
319
320
321	// Note that we don't change vertexCount, because the other buffer(s) are still the same
322	// size after all
323
324
325	}
326	}
327	//-----------------------------------------------------------------------
328	void VertexData::reorganiseBuffers(VertexDeclaration* newDeclaration, const BufferUsageList& bufferUsages)
329	{
330	// Firstly, close up any gaps in the buffer sources which might have arisen
331	newDeclaration->closeGapsInSource();
332
333	// Build up a list of both old and new elements in each buffer
334	unsigned short buf = 0;
335	std::vector<void*> oldBufferLocks;
336	std::vector<size_t> oldBufferVertexSizes;
337	std::vector<void*> newBufferLocks;
338	std::vector<size_t> newBufferVertexSizes;
339	VertexBufferBinding* newBinding =
340	HardwareBufferManager::getSingleton().createVertexBufferBinding();
341	const VertexBufferBinding::VertexBufferBindingMap& oldBindingMap = vertexBufferBinding->getBindings();
342	VertexBufferBinding::VertexBufferBindingMap::const_iterator itBinding;
343
344	// Pre-allocate old buffer locks
345	if (!oldBindingMap.empty())
346	{
347	size_t count = oldBindingMap.rbegin()->first + 1;
348	oldBufferLocks.resize(count);
349	oldBufferVertexSizes.resize(count);
350	}
351	// Lock all the old buffers for reading
352	for (itBinding = oldBindingMap.begin(); itBinding != oldBindingMap.end(); ++itBinding)
353	{
354	assert(itBinding->second->getNumVertices() >= vertexCount);
355
356	oldBufferVertexSizes[itBinding->first] =
357	itBinding->second->getVertexSize();
358	oldBufferLocks[itBinding->first] =
359	itBinding->second->lock(
360	HardwareBuffer::HBL_READ_ONLY);
361	}
362
363	// Create new buffers and lock all for writing
364	buf = 0;
365	while (!newDeclaration->findElementsBySource(buf).empty())
366	{
367	size_t vertexSize = newDeclaration->getVertexSize(buf);
368
369	HardwareVertexBufferSharedPtr vbuf =
370	HardwareBufferManager::getSingleton().createVertexBuffer(
371	vertexSize,
372	vertexCount,
373	bufferUsages[buf]);
374	newBinding->setBinding(buf, vbuf);
375
376	newBufferVertexSizes.push_back(vertexSize);
377	newBufferLocks.push_back(
378	vbuf->lock(HardwareBuffer::HBL_DISCARD));
379	buf++;
380	}
381
382	// Map from new to old elements
383	typedef std::map<const VertexElement, const VertexElement> NewToOldElementMap;
384	NewToOldElementMap newToOldElementMap;
385	const VertexDeclaration::VertexElementList& newElemList = newDeclaration->getElements();
386	VertexDeclaration::VertexElementList::const_iterator ei, eiend;
387	eiend = newElemList.end();
388	for (ei = newElemList.begin(); ei != eiend; ++ei)
389	{
390	// Find corresponding old element
391	const VertexElement* oldElem =
392	vertexDeclaration->findElementBySemantic(
393	(ei).getSemantic(), (ei).getIndex());
394	if (!oldElem)
395	{
396	// Error, cannot create new elements with this method
397	OGRE_EXCEPT(Exception::ERR_ITEM_NOT_FOUND,
398	"Element not found in old vertex declaration",
399	"VertexData::reorganiseBuffers");
400	}
401	newToOldElementMap[&(*ei)] = oldElem;
402	}
403	// Now iterate over the new buffers, pulling data out of the old ones
404	// For each vertex
405	for (size_t v = 0; v < vertexCount; ++v)
406	{
407	// For each (new) element
408	for (ei = newElemList.begin(); ei != eiend; ++ei)
409	{
410	const VertexElement* newElem = &(*ei);
411	NewToOldElementMap::iterator noi = newToOldElementMap.find(newElem);
412	const VertexElement* oldElem = noi->second;
413	unsigned short oldBufferNo = oldElem->getSource();
414	unsigned short newBufferNo = newElem->getSource();
415	void* pSrcBase = static_cast<void*>(
416	static_cast<unsigned char*>(oldBufferLocks[oldBufferNo])
417	+ v * oldBufferVertexSizes[oldBufferNo]);
418	void* pDstBase = static_cast<void*>(
419	static_cast<unsigned char*>(newBufferLocks[newBufferNo])
420	+ v * newBufferVertexSizes[newBufferNo]);
421	void pSrc, pDst;
422	oldElem->baseVertexPointerToElement(pSrcBase, &pSrc);
423	newElem->baseVertexPointerToElement(pDstBase, &pDst);
424
425	memcpy(pDst, pSrc, newElem->getSize());
426
427	}
428	}
429
430	// Unlock all buffers
431	for (itBinding = oldBindingMap.begin(); itBinding != oldBindingMap.end(); ++itBinding)
432	{
433	itBinding->second->unlock();
434	}
435	for (buf = 0; buf < newBinding->getBufferCount(); ++buf)
436	{
437	newBinding->getBuffer(buf)->unlock();
438	}
439
440	// Delete old binding & declaration
441	HardwareBufferManager::getSingleton().
442	destroyVertexBufferBinding(vertexBufferBinding);
443	HardwareBufferManager::getSingleton().destroyVertexDeclaration(vertexDeclaration);
444
445	// Assign new binding and declaration
446	vertexDeclaration = newDeclaration;
447	vertexBufferBinding = newBinding;
448
449	}
450	//-----------------------------------------------------------------------
451	void VertexData::reorganiseBuffers(VertexDeclaration* newDeclaration)
452	{
453	// Derive the buffer usages from looking at where the source has come
454	// from
455	BufferUsageList usages;
456	for (unsigned short b = 0; b <= newDeclaration->getMaxSource(); ++b)
457	{
458	VertexDeclaration::VertexElementList destElems = newDeclaration->findElementsBySource(b);
459	// Initialise with most restrictive version
460	// (not really a usable option, but these flags will be removed)
461	HardwareBuffer::Usage final = static_cast<HardwareBuffer::Usage>(
462	HardwareBuffer::HBU_STATIC_WRITE_ONLY \| HardwareBuffer::HBU_DISCARDABLE);
463	VertexDeclaration::VertexElementList::iterator v;
464	for (v = destElems.begin(); v != destElems.end(); ++v)
465	{
466	VertexElement& destelem = *v;
467	// get source
468	const VertexElement* srcelem =
469	vertexDeclaration->findElementBySemantic(
470	destelem.getSemantic(), destelem.getIndex());
471	// get buffer
472	HardwareVertexBufferSharedPtr srcbuf =
473	vertexBufferBinding->getBuffer(srcelem->getIndex());
474	// improve flexibility only
475	if (srcbuf->getUsage() & HardwareBuffer::HBU_DYNAMIC)
476	{
477	// remove static
478	final = static_cast<HardwareBuffer::Usage>(
479	final & ~HardwareBuffer::HBU_STATIC);
480	// add dynamic
481	final = static_cast<HardwareBuffer::Usage>(
482	final \| HardwareBuffer::HBU_DYNAMIC);
483	}
484	if (!(srcbuf->getUsage() & HardwareBuffer::HBU_WRITE_ONLY))
485	{
486	// remove write only
487	final = static_cast<HardwareBuffer::Usage>(
488	final & ~HardwareBuffer::HBU_WRITE_ONLY);
489	}
490	if (!(srcbuf->getUsage() & HardwareBuffer::HBU_DISCARDABLE))
491	{
492	// remove discardable
493	final = static_cast<HardwareBuffer::Usage>(
494	final & ~HardwareBuffer::HBU_DISCARDABLE);
495	}
496
497	}
498	usages.push_back(final);
499	}
500	// Call specific method
501	reorganiseBuffers(newDeclaration, usages);
502
503	}
504	//-----------------------------------------------------------------------
505	void VertexData::convertPackedColour(
506	VertexElementType srcType, VertexElementType destType)
507	{
508	if (destType != VET_COLOUR_ABGR && destType != VET_COLOUR_ARGB)
509	{
510	OGRE_EXCEPT(Exception::ERR_INVALIDPARAMS,
511	"Invalid destType parameter", "VertexData::convertPackedColour");
512	}
513	if (srcType != VET_COLOUR_ABGR && srcType != VET_COLOUR_ARGB)
514	{
515	OGRE_EXCEPT(Exception::ERR_INVALIDPARAMS,
516	"Invalid srcType parameter", "VertexData::convertPackedColour");
517	}
518
519	const VertexBufferBinding::VertexBufferBindingMap& bindMap =
520	vertexBufferBinding->getBindings();
521	VertexBufferBinding::VertexBufferBindingMap::const_iterator bindi;
522	for (bindi = bindMap.begin(); bindi != bindMap.end(); ++bindi)
523	{
524	VertexDeclaration::VertexElementList elems =
525	vertexDeclaration->findElementsBySource(bindi->first);
526	bool conversionNeeded = false;
527	VertexDeclaration::VertexElementList::iterator elemi;
528	for (elemi = elems.begin(); elemi != elems.end(); ++elemi)
529	{
530	VertexElement& elem = *elemi;
531	if (elem.getType() == VET_COLOUR \|\|
532	((elem.getType() == VET_COLOUR_ABGR \|\| elem.getType() == VET_COLOUR_ARGB)
533	&& elem.getType() != destType))
534	{
535	conversionNeeded = true;
536	}
537	}
538
539	if (conversionNeeded)
540	{
541	void* pBase = bindi->second->lock(HardwareBuffer::HBL_NORMAL);
542
543	for (size_t v = 0; v < bindi->second->getNumVertices(); ++v)
544	{
545
546	for (elemi = elems.begin(); elemi != elems.end(); ++elemi)
547	{
548	VertexElement& elem = *elemi;
549	VertexElementType currType = (elem.getType() == VET_COLOUR) ?
550	srcType : elem.getType();
551	if (elem.getType() == VET_COLOUR \|\|
552	((elem.getType() == VET_COLOUR_ABGR \|\| elem.getType() == VET_COLOUR_ARGB)
553	&& elem.getType() != destType))
554	{
555	uint32* pRGBA;
556	elem.baseVertexPointerToElement(pBase, &pRGBA);
557	VertexElement::convertColourValue(currType, destType, pRGBA);
558	}
559	}
560	pBase = static_cast<void*>(
561	static_cast<char*>(pBase) + bindi->second->getVertexSize());
562	}
563	bindi->second->unlock();
564
565	// Modify the elements to reflect the changed type
566	const VertexDeclaration::VertexElementList& allelems =
567	vertexDeclaration->getElements();
568	VertexDeclaration::VertexElementList::const_iterator ai;
569	unsigned short elemIndex = 0;
570	for (ai = allelems.begin(); ai != allelems.end(); ++ai, ++elemIndex)
571	{
572	const VertexElement& elem = *ai;
573	if (elem.getType() == VET_COLOUR \|\|
574	((elem.getType() == VET_COLOUR_ABGR \|\| elem.getType() == VET_COLOUR_ARGB)
575	&& elem.getType() != destType))
576	{
577	vertexDeclaration->modifyElement(elemIndex,
578	elem.getSource(), elem.getOffset(), destType,
579	elem.getSemantic(), elem.getIndex());
580	}
581	}
582
583	}
584
585
586	} // each buffer
587
588
589	}
590	//-----------------------------------------------------------------------
591	void VertexData::allocateHardwareAnimationElements(ushort count)
592	{
593	// Find first free texture coord set
594	unsigned short texCoord = 0;
595	const VertexDeclaration::VertexElementList& vel = vertexDeclaration->getElements();
596	for (VertexDeclaration::VertexElementList::const_iterator i = vel.begin();
597	i != vel.end(); ++i)
598	{
599	const VertexElement& el = *i;
600	if (el.getSemantic() == VES_TEXTURE_COORDINATES)
601	{
602	++texCoord;
603	}
604	}
605	assert(texCoord <= OGRE_MAX_TEXTURE_COORD_SETS);
606
607	// Increase to correct size
608	for (ushort c = hwAnimationDataList.size(); c < count; ++c)
609	{
610	// Create a new 3D texture coordinate set
611	HardwareAnimationData data;
612	data.targetVertexElement = &(vertexDeclaration->addElement(
613	vertexBufferBinding->getNextIndex(), 0, VET_FLOAT3, VES_TEXTURE_COORDINATES, texCoord++));
614
615	hwAnimationDataList.push_back(data);
616	// Vertex buffer will not be bound yet, we expect this to be done by the
617	// caller when it becomes appropriate (e.g. through a VertexAnimationTrack)
618	}
619	}
620	//-----------------------------------------------------------------------
621	//-----------------------------------------------------------------------
622	IndexData::IndexData()
623	{
624	indexCount = 0;
625	indexStart = 0;
626
627	}
628	//-----------------------------------------------------------------------
629	IndexData::~IndexData()
630	{
631	}
632	//-----------------------------------------------------------------------
633	IndexData* IndexData::clone(bool copyData) const
634	{
635	IndexData* dest = new IndexData();
636	if (indexBuffer.get())
637	{
638	if (copyData)
639	{
640	dest->indexBuffer = HardwareBufferManager::getSingleton().
641	createIndexBuffer(indexBuffer->getType(), indexBuffer->getNumIndexes(),
642	indexBuffer->getUsage(), indexBuffer->hasShadowBuffer());
643	dest->indexBuffer->copyData(*indexBuffer, 0, 0, indexBuffer->getSizeInBytes(), true);
644	}
645	else
646	{
647	dest->indexBuffer = indexBuffer;
648	}
649	}
650	dest->indexCount = indexCount;
651	dest->indexStart = indexStart;
652	return dest;
653	}
654	//-----------------------------------------------------------------------
655	//-----------------------------------------------------------------------
656	// Local Utility class for vertex cache optimizer
657	class Triangle
658	{
659	public:
660	enum EdgeMatchType {
661	AB, BC, CA, ANY, NONE
662	};
663
664	union {
665	struct {
666	uint32 a, b, c;
667	};
668	uint32 val[3];
669	};
670
671	inline Triangle()
672	{
673	}
674
675	inline Triangle( uint32 ta, uint32 tb, uint32 tc )
676	: a( ta ), b( tb ), c( tc )
677	{
678	}
679
680	inline Triangle( uint32 t[3] )
681	: a( t[0] ), b( t[1] ), c( t[2] )
682	{
683	}
684
685	inline Triangle( const Triangle& t )
686	: a( t.a ), b( t.b ), c( t.c )
687	{
688	}
689
690	inline bool sharesEdge(const Triangle& t) const
691	{
692	return( a == t.a && b == t.c \|\|
693	a == t.b && b == t.a \|\|
694	a == t.c && b == t.b \|\|
695	b == t.a && c == t.c \|\|
696	b == t.b && c == t.a \|\|
697	b == t.c && c == t.b \|\|
698	c == t.a && a == t.c \|\|
699	c == t.b && a == t.a \|\|
700	c == t.c && a == t.b );
701	}
702
703	inline bool sharesEdge(const uint32 ea, const uint32 eb, const Triangle& t) const
704	{
705	return( ea == t.a && eb == t.c \|\|
706	ea == t.b && eb == t.a \|\|
707	ea == t.c && eb == t.b );
708	}
709
710	inline bool sharesEdge(const EdgeMatchType edge, const Triangle& t) const
711	{
712	if (edge == AB)
713	return sharesEdge(a, b, t);
714	else if (edge == BC)
715	return sharesEdge(b, c, t);
716	else if (edge == CA)
717	return sharesEdge(c, a, t);
718	else
719	return (edge == ANY) == sharesEdge(t);
720	}
721
722	inline EdgeMatchType endoSharedEdge(const Triangle& t) const
723	{
724	if (sharesEdge(a, b, t)) return AB;
725	if (sharesEdge(b, c, t)) return BC;
726	if (sharesEdge(c, a, t)) return CA;
727	return NONE;
728	}
729
730	inline EdgeMatchType exoSharedEdge(const Triangle& t) const
731	{
732	return t.endoSharedEdge(*this);
733	}
734
735	inline void shiftClockwise()
736	{
737	uint32 t = a;
738	a = c;
739	c = b;
740	b = t;
741	}
742
743	inline void shiftCounterClockwise()
744	{
745	uint32 t = a;
746	a = b;
747	b = c;
748	c = t;
749	}
750	};
751	//-----------------------------------------------------------------------
752	//-----------------------------------------------------------------------
753	void IndexData::optimiseVertexCacheTriList(void)
754	{
755	if (indexBuffer->isLocked()) return;
756
757	void *buffer = indexBuffer->lock(HardwareBuffer::HBL_NORMAL);
758
759	Triangle* triangles;
760	uint32 *dest;
761
762	size_t nIndexes = indexCount;
763	size_t nTriangles = nIndexes / 3;
764	size_t i, j;
765	uint16 *source;
766
767	if (indexBuffer->getType() == HardwareIndexBuffer::IT_16BIT)
768	{
769	triangles = new Triangle[nTriangles];
770	source = (uint16 *)buffer;
771	dest = (uint32 *)triangles;
772	for (i = 0; i < nIndexes; ++i) dest[i] = source[i];
773	}
774	else
775	triangles = (Triangle*)buffer;
776
777	// sort triangles based on shared edges
778	uint32 *destlist = new uint32[nTriangles];
779	unsigned char *visited = new unsigned char[nTriangles];
780
781	for (i = 0; i < nTriangles; ++i) visited[i] = 0;
782
783	uint32 start = 0, ti = 0, destcount = 0;
784
785	bool found = false;
786	for (i = 0; i < nTriangles; ++i)
787	{
788	if (found)
789	found = false;
790	else
791	{
792	while (visited[start++]);
793	ti = start - 1;
794	}
795
796	destlist[destcount++] = ti;
797	visited[ti] = 1;
798
799	for (j = start; j < nTriangles; ++j)
800	{
801	if (visited[j]) continue;
802
803	if (triangles[ti].sharesEdge(triangles[j]))
804	{
805	found = true;
806	ti = static_cast<uint32>(j);
807	break;
808	}
809	}
810	}
811
812	if (indexBuffer->getType() == HardwareIndexBuffer::IT_16BIT)
813	{
814	// reorder the indexbuffer
815	j = 0;
816	for (i = 0; i < nTriangles; ++i)
817	{
818	Triangle *t = &triangles[destlist[i]];
819	source[j++] = t->a;
820	source[j++] = t->b;
821	source[j++] = t->c;
822	}
823	delete[] triangles;
824	}
825	else
826	{
827	uint32 *reflist = new uint32[nTriangles];
828
829	// fill the referencebuffer
830	for (i = 0; i < nTriangles; ++i)
831	reflist[destlist[i]] = static_cast<uint32>(i);
832
833	// reorder the indexbuffer
834	for (i = 0; i < nTriangles; ++i)
835	{
836	j = destlist[i];
837	if (i == j) continue; // do not move triangle
838
839	// swap triangles
840
841	Triangle t = triangles[i];
842	triangles[i] = triangles[j];
843	triangles[j] = t;
844
845	// change reference
846	destlist[reflist[i]] = static_cast<uint32>(j);
847	// destlist[i] = i; // not needed, it will not be used
848	}
849
850	delete[] reflist;
851	}
852
853	delete[] destlist;
854	delete[] visited;
855
856	indexBuffer->unlock();
857	}
858	//-----------------------------------------------------------------------
859	//-----------------------------------------------------------------------
860	void VertexCacheProfiler::profile(const HardwareIndexBufferSharedPtr indexBuffer) {
861	if (indexBuffer->isLocked()) return;
862
863	uint16 shortbuffer = (uint16 )indexBuffer->lock(HardwareBuffer::HBL_READ_ONLY);
864
865	if (indexBuffer->getType() == HardwareIndexBuffer::IT_16BIT)
866	for (unsigned int i = 0; i < indexBuffer->getNumIndexes(); ++i)
867	inCache(shortbuffer[i]);
868	else
869	{
870	uint32 buffer = (uint32 )shortbuffer;
871	for (unsigned int i = 0; i < indexBuffer->getNumIndexes(); ++i)
872	inCache(buffer[i]);
873	}
874
875	indexBuffer->unlock();
876	}
877
878	//-----------------------------------------------------------------------
879	bool VertexCacheProfiler::inCache(unsigned int index)
880	{
881	for (unsigned int i = 0; i < buffersize; ++i)
882	{
883	if (index == cache[i])
884	{
885	hit++;
886	return true;
887	}
888	}
889
890	miss++;
891	cache[tail++] = index;
892	tail %= size;
893
894	if (buffersize < size) buffersize++;
895
896	return false;
897	}
898
899
900	}

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source: OGRE/trunk/ogrenew/OgreMain/src/OgreVertexIndexData.cpp @ 692

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