unsigned int BufferObject::computeRequiredBufferSize() const
{
unsigned int newTotalSize = 0;
for(BufferDataList::const_iterator itr = _bufferDataList.begin();
itr != _bufferDataList.end();
++itr)
{
BufferData* bd = *itr;
newTotalSize += bd->getTotalDataSize();
}
return newTotalSize;
}
unsigned int BufferObject::computeRequiredBufferSize() const
{
unsigned int newTotalSize = 0;
for(BufferDataList::const_iterator itr = _bufferDataList.begin();
itr != _bufferDataList.end();
++itr)
{
BufferData* bd = *itr;
if (bd) newTotalSize += bd->getTotalDataSize();
else
{
OSG_NOTICE<<"BufferObject::"<<this<<":"<<className()<<"::BufferObject::computeRequiredBufferSize() error, BufferData is 0x0"<<std::endl;
}
}
//OSG_NOTICE<<"BufferObject::"<<this<<":"<<className()<<"::BufferObject::computeRequiredBufferSize() size="<<newTotalSize<<std::endl;
return newTotalSize;
}
void GLBufferObject::compileBuffer()
{
_dirty = false;
_bufferEntries.reserve(_bufferObject->getNumBufferData());
bool compileAll = false;
bool offsetChanged = false;
unsigned int newTotalSize = 0;
unsigned int i=0;
for(; i<_bufferObject->getNumBufferData(); ++i)
{
BufferData* bd = _bufferObject->getBufferData(i);
if (i<_bufferEntries.size())
{
BufferEntry& entry = _bufferEntries[i];
if (offsetChanged ||
entry.dataSource != bd ||
entry.dataSize != bd->getTotalDataSize())
{
unsigned int previousEndOfBufferDataMarker = entry.offset + entry.dataSize;
// OSG_NOTIFY(osg::NOTICE)<<"GLBufferObject::compileBuffer(..) updating BufferEntry"<<std::endl;
entry.offset = newTotalSize;
entry.modifiedCount = 0xffffff;
entry.dataSize = bd->getTotalDataSize();
entry.dataSource = bd;
newTotalSize += entry.dataSize;
if (previousEndOfBufferDataMarker==newTotalSize)
{
offsetChanged = true;
}
}
}
else
{
BufferEntry entry;
entry.offset = newTotalSize;
entry.modifiedCount = 0xffffff;
entry.dataSize = bd->getTotalDataSize();
entry.dataSource = bd;
#if 0
OSG_NOTIFY(osg::NOTICE)<<"entry"<<std::endl;
OSG_NOTIFY(osg::NOTICE)<<" offset "<<entry.offset<<std::endl;
OSG_NOTIFY(osg::NOTICE)<<" dataSize "<<entry.dataSize<<std::endl;
OSG_NOTIFY(osg::NOTICE)<<" dataSource "<<entry.dataSource<<std::endl;
OSG_NOTIFY(osg::NOTICE)<<" modifiedCount "<<entry.modifiedCount<<std::endl;
#endif
newTotalSize += entry.dataSize;
_bufferEntries.push_back(entry);
}
}
if (i<_bufferEntries.size())
{
// triming end of bufferEntries as the source data is has less entries than the originally held.
_bufferEntries.erase(_bufferEntries.begin()+i, _bufferEntries.end());
}
_extensions->glBindBuffer(_profile._target, _glObjectID);
if (newTotalSize > _profile._size)
{
OSG_NOTIFY(osg::INFO)<<"newTotalSize="<<newTotalSize<<", _profile._size="<<_profile._size<<std::endl;
_profile._size = newTotalSize;
if (_set)
{
_set->moveToSet(this, _set->getParent()->getGLBufferObjectSet(_profile));
}
}
if (_allocatedSize != _profile._size)
{
_allocatedSize = _profile._size;
_extensions->glBufferData(_profile._target, _profile._size, NULL, _profile._usage);
}
char* vboMemory = 0;
#if 0
vboMemory = extensions->glMapBuffer(_target, GL_WRITE_ONLY_ARB);
#endif
for(BufferEntries::iterator itr = _bufferEntries.begin();
itr != _bufferEntries.end();
++itr)
{
BufferEntry& entry = *itr;
if (compileAll || entry.modifiedCount != entry.dataSource->getModifiedCount())
{
// OSG_NOTIFY(osg::NOTICE)<<"GLBufferObject::compileBuffer(..) downloading BufferEntry "<<&entry<<std::endl;
entry.modifiedCount = entry.dataSource->getModifiedCount();
if (vboMemory)
memcpy(vboMemory + (GLsizeiptrARB)entry.offset, entry.dataSource->getDataPointer(), entry.dataSize);
else
_extensions->glBufferSubData(_profile._target, (GLintptrARB)entry.offset, (GLsizeiptrARB)entry.dataSize, entry.dataSource->getDataPointer());
}
}
// Unmap the texture image buffer
if (vboMemory) _extensions->glUnmapBuffer(_profile._target);
}
void GLBufferObject::compileBuffer()
{
_dirty = false;
_bufferEntries.reserve(_bufferObject->getNumBufferData());
bool compileAll = false;
bool offsetChanged = false;
unsigned int bufferAlignment = 4;
unsigned int newTotalSize = 0;
unsigned int i=0;
for(; i<_bufferObject->getNumBufferData(); ++i)
{
BufferData* bd = _bufferObject->getBufferData(i);
if (i<_bufferEntries.size())
{
BufferEntry& entry = _bufferEntries[i];
if (offsetChanged ||
entry.dataSource != bd ||
entry.dataSize != bd->getTotalDataSize())
{
unsigned int previousEndOfBufferDataMarker = computeBufferAlignment(entry.offset + entry.dataSize, bufferAlignment);
// OSG_NOTICE<<"GLBufferObject::compileBuffer(..) updating BufferEntry"<<std::endl;
entry.numRead = 0;
entry.modifiedCount = 0xffffff;
entry.offset = newTotalSize;
entry.dataSize = bd->getTotalDataSize();
entry.dataSource = bd;
newTotalSize += entry.dataSize;
if (previousEndOfBufferDataMarker!=newTotalSize)
{
offsetChanged = true;
}
}
else
{
newTotalSize = computeBufferAlignment(newTotalSize + entry.dataSize, bufferAlignment);
}
}
else
{
BufferEntry entry;
entry.offset = newTotalSize;
entry.modifiedCount = 0xffffff;
entry.dataSize = bd ? bd->getTotalDataSize() : 0;
entry.dataSource = bd;
#if 0
OSG_NOTICE<<"entry"<<std::endl;
OSG_NOTICE<<" offset "<<entry.offset<<std::endl;
OSG_NOTICE<<" dataSize "<<entry.dataSize<<std::endl;
OSG_NOTICE<<" dataSource "<<entry.dataSource<<std::endl;
OSG_NOTICE<<" modifiedCount "<<entry.modifiedCount<<std::endl;
#endif
newTotalSize = computeBufferAlignment(newTotalSize + entry.dataSize, bufferAlignment);
_bufferEntries.push_back(entry);
}
}
if (i<_bufferEntries.size())
{
// triming end of bufferEntries as the source data is has less entries than the originally held.
_bufferEntries.erase(_bufferEntries.begin()+i, _bufferEntries.end());
}
_extensions->glBindBuffer(_profile._target, _glObjectID);
_extensions->debugObjectLabel(GL_BUFFER, _glObjectID, _bufferObject->getName());
if (newTotalSize > _profile._size)
{
OSG_INFO<<"newTotalSize="<<newTotalSize<<", _profile._size="<<_profile._size<<std::endl;
unsigned int sizeDifference = newTotalSize - _profile._size;
_profile._size = newTotalSize;
if (_set)
{
_set->moveToSet(this, _set->getParent()->getGLBufferObjectSet(_profile));
_set->getParent()->getCurrGLBufferObjectPoolSize() += sizeDifference;
}
}
if (_allocatedSize != _profile._size)
{
_allocatedSize = _profile._size;
OSG_INFO<<" Allocating new glBufferData(), _allocatedSize="<<_allocatedSize<<std::endl;
_extensions->glBufferData(_profile._target, _profile._size, NULL, _profile._usage);
compileAll = true;
}
for(BufferEntries::iterator itr = _bufferEntries.begin();
itr != _bufferEntries.end();
++itr)
{
BufferEntry& entry = *itr;
if (entry.dataSource && (compileAll || entry.modifiedCount != entry.dataSource->getModifiedCount()))
{
// OSG_NOTICE<<"GLBufferObject::compileBuffer(..) downloading BufferEntry "<<&entry<<std::endl;
entry.numRead = 0;
entry.modifiedCount = entry.dataSource->getModifiedCount();
const osg::Image* image = entry.dataSource->asImage();
if (image && !(image->isDataContiguous()))
{
unsigned int offset = entry.offset;
for(osg::Image::DataIterator img_itr(image); img_itr.valid(); ++img_itr)
{
_extensions->glBufferSubData(_profile._target, (GLintptr)offset, (GLsizeiptr)img_itr.size(), img_itr.data());
offset += img_itr.size();
}
}
else
{
_extensions->glBufferSubData(_profile._target, (GLintptr)entry.offset, (GLsizeiptr)entry.dataSize, entry.dataSource->getDataPointer());
}
}
}
}
