|Microsoft DirectX 9.0|
Pointer to the allocator that created this sample.
Although the sample keeps a pointer to the allocator, it does not hold a reference count. Instead, the allocator increments its own reference count in the IMemAllocator::GetBuffer method, and releases itself in the IMemAllocator::ReleaseBuffer method. This guarantees that the allocator will be available as long as another object is using the sample.