//-----------------------------------------------------------------------
HardwareVertexBufferSharedPtr
HardwareBufferManagerBase::allocateVertexBufferCopy(
const HardwareVertexBufferSharedPtr& sourceBuffer,
BufferLicenseType licenseType, HardwareBufferLicensee* licensee,
bool copyData)
{
// pre-lock the mVertexBuffers mutex, which would usually get locked in
// makeBufferCopy / createVertexBuffer
// this prevents a deadlock in _notifyVertexBufferDestroyed
// which locks the same mutexes (via other methods) but in reverse order
OGRE_LOCK_MUTEX(mVertexBuffersMutex);
{
OGRE_LOCK_MUTEX(mTempBuffersMutex);
HardwareVertexBufferSharedPtr vbuf;
// Locate existing buffer copy in temporary vertex buffers
FreeTemporaryVertexBufferMap::iterator i =
mFreeTempVertexBufferMap.find(sourceBuffer.get());
if (i == mFreeTempVertexBufferMap.end())
{
// copy buffer, use shadow buffer and make dynamic
vbuf = makeBufferCopy(
sourceBuffer,
HardwareBuffer::HBU_DYNAMIC_WRITE_ONLY_DISCARDABLE,
true);
}
else
{
// Allocate existing copy
vbuf = i->second;
mFreeTempVertexBufferMap.erase(i);
}
// Copy data?
if (copyData)
{
vbuf->copyData(*(sourceBuffer.get()), 0, 0, sourceBuffer->getSizeInBytes(), true);
}
// Insert copy into licensee list
mTempVertexBufferLicenses.insert(
TemporaryVertexBufferLicenseMap::value_type(
vbuf.get(),
VertexBufferLicense(sourceBuffer.get(), licenseType, EXPIRED_DELAY_FRAME_THRESHOLD, vbuf, licensee)));
return vbuf;
}
}
HardwareVertexBufferSharedPtr HardwareBufferManagerBase::allocateVertexBufferCopy(const HardwareVertexBufferSharedPtr& sourceBuffer, BufferLicenseType licenseType, HardwareBufferLicensee* licensee, BOOL copyData /* = FALSE */)
{
HardwareVertexBufferSharedPtr vbuf;
FreeTemporaryVertexBufferMap::iterator i = mFreeTempVertexBufferMap.find(sourceBuffer.get());
if (i == mFreeTempVertexBufferMap.end())
{
vbuf = makeBufferCopy(sourceBuffer, HardwareBuffer::HBU_DYNAMIC_WRITE_ONLY_DISCARDABLE,
TRUE);
}
else
{
vbuf = i->second;
mFreeTempVertexBufferMap.erase(i);
}
if (copyData)
{
vbuf->copyData(*(sourceBuffer.get()), 0, 0, sourceBuffer->getSizeInBytes(), TRUE);
}
mTempVertexBufferLicenses.insert(
TemporayVertexBufferLicenseMap::value_type(
vbuf.get(),
VertexBufferLicense(sourceBuffer.get(), licenseType, EXPIRED_DELAY_FRAME_THRESHOLD, vbuf, licensee)));
return vbuf;
}
