import opencl_course source for a start

opencl/parallel_primitives/host/btPrefixScanCL.h

@@ -0,0 +1,37 @@
+
+#ifndef BT_PREFIX_SCAN_CL_H
+#define BT_PREFIX_SCAN_CL_H
+
+#include "btOpenCLArray.h"
+#include "btBufferInfoCL.h"
+#include "btAlignedObjectArray.h"
+
+class btPrefixScanCL
+{
+	enum
+	{
+		BLOCK_SIZE = 128
+	};
+
+//	Option m_option;
+
+	cl_command_queue	m_commandQueue;
+
+	cl_kernel m_localScanKernel;
+	cl_kernel m_blockSumKernel;
+	cl_kernel m_propagationKernel;
+
+	btOpenCLArray<unsigned int>* m_workBuffer;
+
+
+	public:
+		
+	btPrefixScanCL(cl_context ctx, cl_device_id device, cl_command_queue queue,int size=0);
+
+	virtual ~btPrefixScanCL();
+
+	void execute(btOpenCLArray<unsigned int>& src, btOpenCLArray<unsigned int>& dst, int n, unsigned int* sum = 0);
+	void executeHost(btAlignedObjectArray<unsigned int>& src, btAlignedObjectArray<unsigned int>& dst, int n, unsigned int* sum);
+};
+
+#endif //BT_PREFIX_SCAN_CL_H