Fix leaks. Allocate CUDA memory only once. Free allocations when Compressor is destroyed.

src/nvtt/Compressor.h

@@ -24,6 +24,10 @@
 #ifndef NV_TT_COMPRESSOR_H
 #define NV_TT_COMPRESSOR_H
 
+#include <nvcore/Ptr.h>
+
+#include <nvtt/cuda/CudaCompressDXT.h>
+
 #include "nvtt.h"
 
 namespace nv
@@ -63,6 +67,9 @@ namespace nvtt
 
 		bool cudaSupported;
 		bool cudaEnabled;
+
+		nv::AutoPtr<nv::CudaCompressor> cuda;
+
 	};
 
 } // nvtt namespace