Remove unused Bullet module and thirdparty code

It has been disabled in `master` since one year (#45852) and our plan
is for Bullet, and possibly other thirdparty physics engines, to be
implemented via GDExtension so that they can be selected by the users
who need them.

1 files changed, 0 insertions, 646 deletions

diff --git a/thirdparty/bullet/Bullet3OpenCL/ParallelPrimitives/b3RadixSort32CL.cpp b/thirdparty/bullet/Bullet3OpenCL/ParallelPrimitives/b3RadixSort32CL.cpp
deleted file mode 100644
index e86af6583f..0000000000
--- a/thirdparty/bullet/Bullet3OpenCL/ParallelPrimitives/b3RadixSort32CL.cpp
+++ /dev/null
@@ -1,646 +0,0 @@
-
-#include "b3RadixSort32CL.h"
-#include "b3LauncherCL.h"
-#include "Bullet3OpenCL/Initialize/b3OpenCLUtils.h"
-#include "b3PrefixScanCL.h"
-#include "b3FillCL.h"
-
-#define RADIXSORT32_PATH "src/Bullet3OpenCL/ParallelPrimitives/kernels/RadixSort32Kernels.cl"
-
-#include "kernels/RadixSort32KernelsCL.h"
-
-b3RadixSort32CL::b3RadixSort32CL(cl_context ctx, cl_device_id device, cl_command_queue queue, int initialCapacity)
-	: m_commandQueue(queue)
-{
-	b3OpenCLDeviceInfo info;
-	b3OpenCLUtils::getDeviceInfo(device, &info);
-	m_deviceCPU = (info.m_deviceType & CL_DEVICE_TYPE_CPU) != 0;
-
-	m_workBuffer1 = new b3OpenCLArray<unsigned int>(ctx, queue);
-	m_workBuffer2 = new b3OpenCLArray<unsigned int>(ctx, queue);
-	m_workBuffer3 = new b3OpenCLArray<b3SortData>(ctx, queue);
-	m_workBuffer3a = new b3OpenCLArray<unsigned int>(ctx, queue);
-	m_workBuffer4 = new b3OpenCLArray<b3SortData>(ctx, queue);
-	m_workBuffer4a = new b3OpenCLArray<unsigned int>(ctx, queue);
-
-	if (initialCapacity > 0)
-	{
-		m_workBuffer1->resize(initialCapacity);
-		m_workBuffer3->resize(initialCapacity);
-		m_workBuffer3a->resize(initialCapacity);
-		m_workBuffer4->resize(initialCapacity);
-		m_workBuffer4a->resize(initialCapacity);
-	}
-
-	m_scan = new b3PrefixScanCL(ctx, device, queue);
-	m_fill = new b3FillCL(ctx, device, queue);
-
-	const char* additionalMacros = "";
-
-	cl_int pErrNum;
-	const char* kernelSource = radixSort32KernelsCL;
-
-	cl_program sortProg = b3OpenCLUtils::compileCLProgramFromString(ctx, device, kernelSource, &pErrNum, additionalMacros, RADIXSORT32_PATH);
-	b3Assert(sortProg);
-
-	m_streamCountSortDataKernel = b3OpenCLUtils::compileCLKernelFromString(ctx, device, kernelSource, "StreamCountSortDataKernel", &pErrNum, sortProg, additionalMacros);
-	b3Assert(m_streamCountSortDataKernel);
-
-	m_streamCountKernel = b3OpenCLUtils::compileCLKernelFromString(ctx, device, kernelSource, "StreamCountKernel", &pErrNum, sortProg, additionalMacros);
-	b3Assert(m_streamCountKernel);
-
-	if (m_deviceCPU)
-	{
-		m_sortAndScatterSortDataKernel = b3OpenCLUtils::compileCLKernelFromString(ctx, device, kernelSource, "SortAndScatterSortDataKernelSerial", &pErrNum, sortProg, additionalMacros);
-		b3Assert(m_sortAndScatterSortDataKernel);
-		m_sortAndScatterKernel = b3OpenCLUtils::compileCLKernelFromString(ctx, device, kernelSource, "SortAndScatterKernelSerial", &pErrNum, sortProg, additionalMacros);
-		b3Assert(m_sortAndScatterKernel);
-	}
-	else
-	{
-		m_sortAndScatterSortDataKernel = b3OpenCLUtils::compileCLKernelFromString(ctx, device, kernelSource, "SortAndScatterSortDataKernel", &pErrNum, sortProg, additionalMacros);
-		b3Assert(m_sortAndScatterSortDataKernel);
-		m_sortAndScatterKernel = b3OpenCLUtils::compileCLKernelFromString(ctx, device, kernelSource, "SortAndScatterKernel", &pErrNum, sortProg, additionalMacros);
-		b3Assert(m_sortAndScatterKernel);
-	}
-
-	m_prefixScanKernel = b3OpenCLUtils::compileCLKernelFromString(ctx, device, kernelSource, "PrefixScanKernel", &pErrNum, sortProg, additionalMacros);
-	b3Assert(m_prefixScanKernel);
-}
-
-b3RadixSort32CL::~b3RadixSort32CL()
-{
-	delete m_scan;
-	delete m_fill;
-	delete m_workBuffer1;
-	delete m_workBuffer2;
-	delete m_workBuffer3;
-	delete m_workBuffer3a;
-	delete m_workBuffer4;
-	delete m_workBuffer4a;
-
-	clReleaseKernel(m_streamCountSortDataKernel);
-	clReleaseKernel(m_streamCountKernel);
-	clReleaseKernel(m_sortAndScatterSortDataKernel);
-	clReleaseKernel(m_sortAndScatterKernel);
-	clReleaseKernel(m_prefixScanKernel);
-}
-
-void b3RadixSort32CL::executeHost(b3AlignedObjectArray<b3SortData>& inout, int sortBits /* = 32 */)
-{
-	int n = inout.size();
-	const int BITS_PER_PASS = 8;
-	const int NUM_TABLES = (1 << BITS_PER_PASS);
-
-	int tables[NUM_TABLES];
-	int counter[NUM_TABLES];
-
-	b3SortData* src = &inout[0];
-	b3AlignedObjectArray<b3SortData> workbuffer;
-	workbuffer.resize(inout.size());
-	b3SortData* dst = &workbuffer[0];
-
-	int count = 0;
-	for (int startBit = 0; startBit < sortBits; startBit += BITS_PER_PASS)
-	{
-		for (int i = 0; i < NUM_TABLES; i++)
-		{
-			tables[i] = 0;
-		}
-
-		for (int i = 0; i < n; i++)
-		{
-			int tableIdx = (src[i].m_key >> startBit) & (NUM_TABLES - 1);
-			tables[tableIdx]++;
-		}
-//#define TEST
-#ifdef TEST
-		printf("histogram size=%d\n", NUM_TABLES);
-		for (int i = 0; i < NUM_TABLES; i++)
-		{
-			if (tables[i] != 0)
-			{
-				printf("tables[%d]=%d]\n", i, tables[i]);
-			}
-		}
-#endif  //TEST \
-	//	prefix scan
-		int sum = 0;
-		for (int i = 0; i < NUM_TABLES; i++)
-		{
-			int iData = tables[i];
-			tables[i] = sum;
-			sum += iData;
-			counter[i] = 0;
-		}
-
-		//	distribute
-		for (int i = 0; i < n; i++)
-		{
-			int tableIdx = (src[i].m_key >> startBit) & (NUM_TABLES - 1);
-
-			dst[tables[tableIdx] + counter[tableIdx]] = src[i];
-			counter[tableIdx]++;
-		}
-
-		b3Swap(src, dst);
-		count++;
-	}
-
-	if (count & 1)
-	{
-		b3Assert(0);  //need to copy
-	}
-}
-
-void b3RadixSort32CL::executeHost(b3OpenCLArray<b3SortData>& keyValuesInOut, int sortBits /* = 32 */)
-{
-	b3AlignedObjectArray<b3SortData> inout;
-	keyValuesInOut.copyToHost(inout);
-
-	executeHost(inout, sortBits);
-
-	keyValuesInOut.copyFromHost(inout);
-}
-
-void b3RadixSort32CL::execute(b3OpenCLArray<unsigned int>& keysIn, b3OpenCLArray<unsigned int>& keysOut, b3OpenCLArray<unsigned int>& valuesIn,
-							  b3OpenCLArray<unsigned int>& valuesOut, int n, int sortBits)
-{
-}
-
-//#define DEBUG_RADIXSORT
-//#define DEBUG_RADIXSORT2
-
-void b3RadixSort32CL::execute(b3OpenCLArray<b3SortData>& keyValuesInOut, int sortBits /* = 32 */)
-{
-	int originalSize = keyValuesInOut.size();
-	int workingSize = originalSize;
-
-	int dataAlignment = DATA_ALIGNMENT;
-
-#ifdef DEBUG_RADIXSORT2
-	b3AlignedObjectArray<b3SortData> test2;
-	keyValuesInOut.copyToHost(test2);
-	printf("numElem = %d\n", test2.size());
-	for (int i = 0; i < test2.size(); i++)
-	{
-		printf("test2[%d].m_key=%d\n", i, test2[i].m_key);
-		printf("test2[%d].m_value=%d\n", i, test2[i].m_value);
-	}
-#endif  //DEBUG_RADIXSORT2
-
-	b3OpenCLArray<b3SortData>* src = 0;
-
-	if (workingSize % dataAlignment)
-	{
-		workingSize += dataAlignment - (workingSize % dataAlignment);
-		m_workBuffer4->copyFromOpenCLArray(keyValuesInOut);
-		m_workBuffer4->resize(workingSize);
-		b3SortData fillValue;
-		fillValue.m_key = 0xffffffff;
-		fillValue.m_value = 0xffffffff;
-
-#define USE_BTFILL
-#ifdef USE_BTFILL
-		m_fill->execute((b3OpenCLArray<b3Int2>&)*m_workBuffer4, (b3Int2&)fillValue, workingSize - originalSize, originalSize);
-#else
-		//fill the remaining bits (very slow way, todo: fill on GPU/OpenCL side)
-
-		for (int i = originalSize; i < workingSize; i++)
-		{
-			m_workBuffer4->copyFromHostPointer(&fillValue, 1, i);
-		}
-#endif  //USE_BTFILL
-
-		src = m_workBuffer4;
-	}
-	else
-	{
-		src = &keyValuesInOut;
-		m_workBuffer4->resize(0);
-	}
-
-	b3Assert(workingSize % DATA_ALIGNMENT == 0);
-	int minCap = NUM_BUCKET * NUM_WGS;
-
-	int n = workingSize;
-
-	m_workBuffer1->resize(minCap);
-	m_workBuffer3->resize(workingSize);
-
-	//	ADLASSERT( ELEMENTS_PER_WORK_ITEM == 4 );
-	b3Assert(BITS_PER_PASS == 4);
-	b3Assert(WG_SIZE == 64);
-	b3Assert((sortBits & 0x3) == 0);
-
-	b3OpenCLArray<b3SortData>* dst = m_workBuffer3;
-
-	b3OpenCLArray<unsigned int>* srcHisto = m_workBuffer1;
-	b3OpenCLArray<unsigned int>* destHisto = m_workBuffer2;
-
-	int nWGs = NUM_WGS;
-	b3ConstData cdata;
-
-	{
-		int blockSize = ELEMENTS_PER_WORK_ITEM * WG_SIZE;  //set at 256
-		int nBlocks = (n + blockSize - 1) / (blockSize);
-		cdata.m_n = n;
-		cdata.m_nWGs = NUM_WGS;
-		cdata.m_startBit = 0;
-		cdata.m_nBlocksPerWG = (nBlocks + cdata.m_nWGs - 1) / cdata.m_nWGs;
-		if (nBlocks < NUM_WGS)
-		{
-			cdata.m_nBlocksPerWG = 1;
-			nWGs = nBlocks;
-		}
-	}
-
-	int count = 0;
-	for (int ib = 0; ib < sortBits; ib += 4)
-	{
-#ifdef DEBUG_RADIXSORT2
-		keyValuesInOut.copyToHost(test2);
-		printf("numElem = %d\n", test2.size());
-		for (int i = 0; i < test2.size(); i++)
-		{
-			if (test2[i].m_key != test2[i].m_value)
-			{
-				printf("test2[%d].m_key=%d\n", i, test2[i].m_key);
-				printf("test2[%d].m_value=%d\n", i, test2[i].m_value);
-			}
-		}
-#endif  //DEBUG_RADIXSORT2
-
-		cdata.m_startBit = ib;
-
-		if (src->size())
-		{
-			b3BufferInfoCL bInfo[] = {b3BufferInfoCL(src->getBufferCL(), true), b3BufferInfoCL(srcHisto->getBufferCL())};
-			b3LauncherCL launcher(m_commandQueue, m_streamCountSortDataKernel, "m_streamCountSortDataKernel");
-
-			launcher.setBuffers(bInfo, sizeof(bInfo) / sizeof(b3BufferInfoCL));
-			launcher.setConst(cdata);
-
-			int num = NUM_WGS * WG_SIZE;
-			launcher.launch1D(num, WG_SIZE);
-		}
-
-#ifdef DEBUG_RADIXSORT
-		b3AlignedObjectArray<unsigned int> testHist;
-		srcHisto->copyToHost(testHist);
-		printf("ib = %d, testHist size = %d, non zero elements:\n", ib, testHist.size());
-		for (int i = 0; i < testHist.size(); i++)
-		{
-			if (testHist[i] != 0)
-				printf("testHist[%d]=%d\n", i, testHist[i]);
-		}
-#endif  //DEBUG_RADIXSORT
-
-//fast prefix scan is not working properly on Mac OSX yet
-#ifdef __APPLE__
-		bool fastScan = false;
-#else
-		bool fastScan = !m_deviceCPU;  //only use fast scan on GPU
-#endif
-
-		if (fastScan)
-		{  //	prefix scan group histogram
-			b3BufferInfoCL bInfo[] = {b3BufferInfoCL(srcHisto->getBufferCL())};
-			b3LauncherCL launcher(m_commandQueue, m_prefixScanKernel, "m_prefixScanKernel");
-			launcher.setBuffers(bInfo, sizeof(bInfo) / sizeof(b3BufferInfoCL));
-			launcher.setConst(cdata);
-			launcher.launch1D(128, 128);
-			destHisto = srcHisto;
-		}
-		else
-		{
-			//unsigned int sum; //for debugging
-			m_scan->execute(*srcHisto, *destHisto, 1920, 0);  //,&sum);
-		}
-
-#ifdef DEBUG_RADIXSORT
-		destHisto->copyToHost(testHist);
-		printf("ib = %d, testHist size = %d, non zero elements:\n", ib, testHist.size());
-		for (int i = 0; i < testHist.size(); i++)
-		{
-			if (testHist[i] != 0)
-				printf("testHist[%d]=%d\n", i, testHist[i]);
-		}
-
-		for (int i = 0; i < testHist.size(); i += NUM_WGS)
-		{
-			printf("testHist[%d]=%d\n", i / NUM_WGS, testHist[i]);
-		}
-
-#endif  //DEBUG_RADIXSORT
-
-#define USE_GPU
-#ifdef USE_GPU
-
-		if (src->size())
-		{  //	local sort and distribute
-			b3BufferInfoCL bInfo[] = {b3BufferInfoCL(src->getBufferCL(), true), b3BufferInfoCL(destHisto->getBufferCL(), true), b3BufferInfoCL(dst->getBufferCL())};
-			b3LauncherCL launcher(m_commandQueue, m_sortAndScatterSortDataKernel, "m_sortAndScatterSortDataKernel");
-			launcher.setBuffers(bInfo, sizeof(bInfo) / sizeof(b3BufferInfoCL));
-			launcher.setConst(cdata);
-			launcher.launch1D(nWGs * WG_SIZE, WG_SIZE);
-		}
-#else
-		{
-#define NUM_TABLES 16
-//#define SEQUENTIAL
-#ifdef SEQUENTIAL
-			int counter2[NUM_TABLES] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
-			int tables[NUM_TABLES];
-			int startBit = ib;
-
-			destHisto->copyToHost(testHist);
-			b3AlignedObjectArray<b3SortData> srcHost;
-			b3AlignedObjectArray<b3SortData> dstHost;
-			dstHost.resize(src->size());
-
-			src->copyToHost(srcHost);
-
-			for (int i = 0; i < NUM_TABLES; i++)
-			{
-				tables[i] = testHist[i * NUM_WGS];
-			}
-
-			//	distribute
-			for (int i = 0; i < n; i++)
-			{
-				int tableIdx = (srcHost[i].m_key >> startBit) & (NUM_TABLES - 1);
-
-				dstHost[tables[tableIdx] + counter2[tableIdx]] = srcHost[i];
-				counter2[tableIdx]++;
-			}
-
-#else
-
-			int counter2[NUM_TABLES] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
-
-			int tables[NUM_TABLES];
-			b3AlignedObjectArray<b3SortData> dstHostOK;
-			dstHostOK.resize(src->size());
-
-			destHisto->copyToHost(testHist);
-			b3AlignedObjectArray<b3SortData> srcHost;
-			src->copyToHost(srcHost);
-
-			int blockSize = 256;
-			int nBlocksPerWG = cdata.m_nBlocksPerWG;
-			int startBit = ib;
-
-			{
-				for (int i = 0; i < NUM_TABLES; i++)
-				{
-					tables[i] = testHist[i * NUM_WGS];
-				}
-
-				//	distribute
-				for (int i = 0; i < n; i++)
-				{
-					int tableIdx = (srcHost[i].m_key >> startBit) & (NUM_TABLES - 1);
-
-					dstHostOK[tables[tableIdx] + counter2[tableIdx]] = srcHost[i];
-					counter2[tableIdx]++;
-				}
-			}
-
-			b3AlignedObjectArray<b3SortData> dstHost;
-			dstHost.resize(src->size());
-
-			int counter[NUM_TABLES] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
-
-			for (int wgIdx = 0; wgIdx < NUM_WGS; wgIdx++)
-			{
-				int counter[NUM_TABLES] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
-
-				int nBlocks = (n) / blockSize - nBlocksPerWG * wgIdx;
-
-				for (int iblock = 0; iblock < b3Min(cdata.m_nBlocksPerWG, nBlocks); iblock++)
-				{
-					for (int lIdx = 0; lIdx < 64; lIdx++)
-					{
-						int addr = iblock * blockSize + blockSize * cdata.m_nBlocksPerWG * wgIdx + ELEMENTS_PER_WORK_ITEM * lIdx;
-
-						//	MY_HISTOGRAM( localKeys.x ) ++ is much expensive than atomic add as it requires read and write while atomics can just add on AMD
-						//	Using registers didn't perform well. It seems like use localKeys to address requires a lot of alu ops
-						//	AMD: AtomInc performs better while NV prefers ++
-						for (int j = 0; j < ELEMENTS_PER_WORK_ITEM; j++)
-						{
-							if (addr + j < n)
-							{
-								//  printf ("addr+j=%d\n", addr+j);
-
-								int i = addr + j;
-
-								int tableIdx = (srcHost[i].m_key >> startBit) & (NUM_TABLES - 1);
-
-								int destIndex = testHist[tableIdx * NUM_WGS + wgIdx] + counter[tableIdx];
-
-								b3SortData ok = dstHostOK[destIndex];
-
-								if (ok.m_key != srcHost[i].m_key)
-								{
-									printf("ok.m_key = %d, srcHost[i].m_key = %d\n", ok.m_key, srcHost[i].m_key);
-									printf("(ok.m_value = %d, srcHost[i].m_value = %d)\n", ok.m_value, srcHost[i].m_value);
-								}
-								if (ok.m_value != srcHost[i].m_value)
-								{
-									printf("ok.m_value = %d, srcHost[i].m_value = %d\n", ok.m_value, srcHost[i].m_value);
-									printf("(ok.m_key = %d, srcHost[i].m_key = %d)\n", ok.m_key, srcHost[i].m_key);
-								}
-
-								dstHost[destIndex] = srcHost[i];
-								counter[tableIdx]++;
-							}
-						}
-					}
-				}
-			}
-
-#endif  //SEQUENTIAL
-
-			dst->copyFromHost(dstHost);
-		}
-#endif  //USE_GPU
-
-#ifdef DEBUG_RADIXSORT
-		destHisto->copyToHost(testHist);
-		printf("ib = %d, testHist size = %d, non zero elements:\n", ib, testHist.size());
-		for (int i = 0; i < testHist.size(); i++)
-		{
-			if (testHist[i] != 0)
-				printf("testHist[%d]=%d\n", i, testHist[i]);
-		}
-#endif  //DEBUG_RADIXSORT
-		b3Swap(src, dst);
-		b3Swap(srcHisto, destHisto);
-
-#ifdef DEBUG_RADIXSORT2
-		keyValuesInOut.copyToHost(test2);
-		printf("numElem = %d\n", test2.size());
-		for (int i = 0; i < test2.size(); i++)
-		{
-			if (test2[i].m_key != test2[i].m_value)
-			{
-				printf("test2[%d].m_key=%d\n", i, test2[i].m_key);
-				printf("test2[%d].m_value=%d\n", i, test2[i].m_value);
-			}
-		}
-#endif  //DEBUG_RADIXSORT2
-
-		count++;
-	}
-
-	if (count & 1)
-	{
-		b3Assert(0);  //need to copy from workbuffer to keyValuesInOut
-	}
-
-	if (m_workBuffer4->size())
-	{
-		m_workBuffer4->resize(originalSize);
-		keyValuesInOut.copyFromOpenCLArray(*m_workBuffer4);
-	}
-
-#ifdef DEBUG_RADIXSORT
-	keyValuesInOut.copyToHost(test2);
-
-	printf("numElem = %d\n", test2.size());
-	for (int i = 0; i < test2.size(); i++)
-	{
-		printf("test2[%d].m_key=%d\n", i, test2[i].m_key);
-		printf("test2[%d].m_value=%d\n", i, test2[i].m_value);
-	}
-#endif
-}
-
-void b3RadixSort32CL::execute(b3OpenCLArray<unsigned int>& keysInOut, int sortBits /* = 32 */)
-{
-	int originalSize = keysInOut.size();
-	int workingSize = originalSize;
-
-	int dataAlignment = DATA_ALIGNMENT;
-
-	b3OpenCLArray<unsigned int>* src = 0;
-
-	if (workingSize % dataAlignment)
-	{
-		workingSize += dataAlignment - (workingSize % dataAlignment);
-		m_workBuffer4a->copyFromOpenCLArray(keysInOut);
-		m_workBuffer4a->resize(workingSize);
-		unsigned int fillValue = 0xffffffff;
-
-		m_fill->execute(*m_workBuffer4a, fillValue, workingSize - originalSize, originalSize);
-
-		src = m_workBuffer4a;
-	}
-	else
-	{
-		src = &keysInOut;
-		m_workBuffer4a->resize(0);
-	}
-
-	b3Assert(workingSize % DATA_ALIGNMENT == 0);
-	int minCap = NUM_BUCKET * NUM_WGS;
-
-	int n = workingSize;
-
-	m_workBuffer1->resize(minCap);
-	m_workBuffer3->resize(workingSize);
-	m_workBuffer3a->resize(workingSize);
-
-	//	ADLASSERT( ELEMENTS_PER_WORK_ITEM == 4 );
-	b3Assert(BITS_PER_PASS == 4);
-	b3Assert(WG_SIZE == 64);
-	b3Assert((sortBits & 0x3) == 0);
-
-	b3OpenCLArray<unsigned int>* dst = m_workBuffer3a;
-
-	b3OpenCLArray<unsigned int>* srcHisto = m_workBuffer1;
-	b3OpenCLArray<unsigned int>* destHisto = m_workBuffer2;
-
-	int nWGs = NUM_WGS;
-	b3ConstData cdata;
-
-	{
-		int blockSize = ELEMENTS_PER_WORK_ITEM * WG_SIZE;  //set at 256
-		int nBlocks = (n + blockSize - 1) / (blockSize);
-		cdata.m_n = n;
-		cdata.m_nWGs = NUM_WGS;
-		cdata.m_startBit = 0;
-		cdata.m_nBlocksPerWG = (nBlocks + cdata.m_nWGs - 1) / cdata.m_nWGs;
-		if (nBlocks < NUM_WGS)
-		{
-			cdata.m_nBlocksPerWG = 1;
-			nWGs = nBlocks;
-		}
-	}
-
-	int count = 0;
-	for (int ib = 0; ib < sortBits; ib += 4)
-	{
-		cdata.m_startBit = ib;
-
-		if (src->size())
-		{
-			b3BufferInfoCL bInfo[] = {b3BufferInfoCL(src->getBufferCL(), true), b3BufferInfoCL(srcHisto->getBufferCL())};
-			b3LauncherCL launcher(m_commandQueue, m_streamCountKernel, "m_streamCountKernel");
-
-			launcher.setBuffers(bInfo, sizeof(bInfo) / sizeof(b3BufferInfoCL));
-			launcher.setConst(cdata);
-
-			int num = NUM_WGS * WG_SIZE;
-			launcher.launch1D(num, WG_SIZE);
-		}
-
-//fast prefix scan is not working properly on Mac OSX yet
-#ifdef __APPLE__
-		bool fastScan = false;
-#else
-		bool fastScan = !m_deviceCPU;
-#endif
-
-		if (fastScan)
-		{  //	prefix scan group histogram
-			b3BufferInfoCL bInfo[] = {b3BufferInfoCL(srcHisto->getBufferCL())};
-			b3LauncherCL launcher(m_commandQueue, m_prefixScanKernel, "m_prefixScanKernel");
-			launcher.setBuffers(bInfo, sizeof(bInfo) / sizeof(b3BufferInfoCL));
-			launcher.setConst(cdata);
-			launcher.launch1D(128, 128);
-			destHisto = srcHisto;
-		}
-		else
-		{
-			//unsigned int sum; //for debugging
-			m_scan->execute(*srcHisto, *destHisto, 1920, 0);  //,&sum);
-		}
-
-		if (src->size())
-		{  //	local sort and distribute
-			b3BufferInfoCL bInfo[] = {b3BufferInfoCL(src->getBufferCL(), true), b3BufferInfoCL(destHisto->getBufferCL(), true), b3BufferInfoCL(dst->getBufferCL())};
-			b3LauncherCL launcher(m_commandQueue, m_sortAndScatterKernel, "m_sortAndScatterKernel");
-			launcher.setBuffers(bInfo, sizeof(bInfo) / sizeof(b3BufferInfoCL));
-			launcher.setConst(cdata);
-			launcher.launch1D(nWGs * WG_SIZE, WG_SIZE);
-		}
-
-		b3Swap(src, dst);
-		b3Swap(srcHisto, destHisto);
-
-		count++;
-	}
-
-	if (count & 1)
-	{
-		b3Assert(0);  //need to copy from workbuffer to keyValuesInOut
-	}
-
-	if (m_workBuffer4a->size())
-	{
-		m_workBuffer4a->resize(originalSize);
-		keysInOut.copyFromOpenCLArray(*m_workBuffer4a);
-	}
-}