Method GetUsedMemory

include/luxrays/core/device.h:80–80

	virtual size_t GetMaxMemory() const { return 0; }
	size_t GetUsedMemory() const { return usedMemory; }
	void AllocMemory(size_t s) const { usedMemory += s; }
	void FreeMemory(size_t s) const { usedMemory -= s; }