Hi,
I noticed a bug in BufferObject handling. The size stored into the profile
object when the GLBufferObject is added to a profile-set is used to update the
BufferObject pool size. The buffer-alignment is not considered here.
When a BufferObject is compiled, the profile size can get an update as the
buffer-alignment is also considered in the size calculation. But this update in
the object's size is not reflected in the pool-size. When the object gets
deleted, it can cause the pool-size variable to underflow. The fix is a small
change in the function void GLBufferObject::compileBuffer() which are marked in
red below:
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;
}
}
Thank you!
Cheers,
Anish
------------------
Read this topic online here:
http://forum.openscenegraph.org/viewtopic.php?p=66007#66007
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