129 lines
4.6 KiB
C++
129 lines
4.6 KiB
C++
//this file is autogenerated using stringify.bat (premake --stringify) in the build folder of this project
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static const char* prefixScanKernelsCL =
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"/*\n"
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"Copyright (c) 2012 Advanced Micro Devices, Inc. \n"
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"This software is provided 'as-is', without any express or implied warranty.\n"
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"In no event will the authors be held liable for any damages arising from the use of this software.\n"
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"Permission is granted to anyone to use this software for any purpose, \n"
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"including commercial applications, and to alter it and redistribute it freely, \n"
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"subject to the following restrictions:\n"
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"1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required.\n"
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"2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.\n"
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"3. This notice may not be removed or altered from any source distribution.\n"
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"*/\n"
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"//Originally written by Takahiro Harada\n"
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"typedef unsigned int u32;\n"
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"#define GET_GROUP_IDX get_group_id(0)\n"
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"#define GET_LOCAL_IDX get_local_id(0)\n"
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"#define GET_GLOBAL_IDX get_global_id(0)\n"
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"#define GET_GROUP_SIZE get_local_size(0)\n"
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"#define GROUP_LDS_BARRIER barrier(CLK_LOCAL_MEM_FENCE)\n"
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"// takahiro end\n"
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"#define WG_SIZE 128 \n"
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"#define m_numElems x\n"
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"#define m_numBlocks y\n"
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"#define m_numScanBlocks z\n"
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"/*typedef struct\n"
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"{\n"
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" uint m_numElems;\n"
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" uint m_numBlocks;\n"
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" uint m_numScanBlocks;\n"
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" uint m_padding[1];\n"
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"} ConstBuffer;\n"
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"*/\n"
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"u32 ScanExclusive(__local u32* data, u32 n, int lIdx, int lSize)\n"
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"{\n"
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" u32 blocksum;\n"
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" int offset = 1;\n"
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" for(int nActive=n>>1; nActive>0; nActive>>=1, offset<<=1)\n"
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" {\n"
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" GROUP_LDS_BARRIER;\n"
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" for(int iIdx=lIdx; iIdx<nActive; iIdx+=lSize)\n"
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" {\n"
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" int ai = offset*(2*iIdx+1)-1;\n"
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" int bi = offset*(2*iIdx+2)-1;\n"
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" data[bi] += data[ai];\n"
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" }\n"
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" }\n"
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" GROUP_LDS_BARRIER;\n"
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" if( lIdx == 0 )\n"
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" {\n"
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" blocksum = data[ n-1 ];\n"
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" data[ n-1 ] = 0;\n"
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" }\n"
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" GROUP_LDS_BARRIER;\n"
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" offset >>= 1;\n"
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" for(int nActive=1; nActive<n; nActive<<=1, offset>>=1 )\n"
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" {\n"
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" GROUP_LDS_BARRIER;\n"
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" for( int iIdx = lIdx; iIdx<nActive; iIdx += lSize )\n"
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" {\n"
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" int ai = offset*(2*iIdx+1)-1;\n"
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" int bi = offset*(2*iIdx+2)-1;\n"
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" u32 temp = data[ai];\n"
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" data[ai] = data[bi];\n"
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" data[bi] += temp;\n"
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" }\n"
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" }\n"
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" GROUP_LDS_BARRIER;\n"
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" return blocksum;\n"
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"}\n"
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"__attribute__((reqd_work_group_size(WG_SIZE,1,1)))\n"
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"__kernel\n"
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"void LocalScanKernel(__global u32* dst, __global u32 *src, __global u32 *sumBuffer,\n"
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" uint4 cb)\n"
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"{\n"
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" __local u32 ldsData[WG_SIZE*2];\n"
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" int gIdx = GET_GLOBAL_IDX;\n"
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" int lIdx = GET_LOCAL_IDX;\n"
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" ldsData[2*lIdx] = ( 2*gIdx < cb.m_numElems )? src[2*gIdx]: 0;\n"
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" ldsData[2*lIdx + 1] = ( 2*gIdx+1 < cb.m_numElems )? src[2*gIdx + 1]: 0;\n"
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" u32 sum = ScanExclusive(ldsData, WG_SIZE*2, GET_LOCAL_IDX, GET_GROUP_SIZE);\n"
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" if( lIdx == 0 ) sumBuffer[GET_GROUP_IDX] = sum;\n"
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" if( (2*gIdx) < cb.m_numElems )\n"
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" {\n"
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" dst[2*gIdx] = ldsData[2*lIdx];\n"
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" }\n"
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" if( (2*gIdx + 1) < cb.m_numElems )\n"
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" {\n"
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" dst[2*gIdx + 1] = ldsData[2*lIdx + 1];\n"
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" }\n"
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"}\n"
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"__attribute__((reqd_work_group_size(WG_SIZE,1,1)))\n"
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"__kernel\n"
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"void AddOffsetKernel(__global u32 *dst, __global u32 *blockSum, uint4 cb)\n"
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"{\n"
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" const u32 blockSize = WG_SIZE*2;\n"
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" int myIdx = GET_GROUP_IDX+1;\n"
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" int lIdx = GET_LOCAL_IDX;\n"
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" u32 iBlockSum = blockSum[myIdx];\n"
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" int endValue = min((myIdx+1)*(blockSize), cb.m_numElems);\n"
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" for(int i=myIdx*blockSize+lIdx; i<endValue; i+=GET_GROUP_SIZE)\n"
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" {\n"
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" dst[i] += iBlockSum;\n"
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" }\n"
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"}\n"
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"__attribute__((reqd_work_group_size(WG_SIZE,1,1)))\n"
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"__kernel\n"
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"void TopLevelScanKernel(__global u32* dst, uint4 cb)\n"
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"{\n"
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" __local u32 ldsData[2048];\n"
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" int gIdx = GET_GLOBAL_IDX;\n"
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" int lIdx = GET_LOCAL_IDX;\n"
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" int lSize = GET_GROUP_SIZE;\n"
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" for(int i=lIdx; i<cb.m_numScanBlocks; i+=lSize )\n"
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" {\n"
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" ldsData[i] = (i<cb.m_numBlocks)? dst[i]:0;\n"
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" }\n"
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" GROUP_LDS_BARRIER;\n"
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" u32 sum = ScanExclusive(ldsData, cb.m_numScanBlocks, GET_LOCAL_IDX, GET_GROUP_SIZE);\n"
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" for(int i=lIdx; i<cb.m_numBlocks; i+=lSize )\n"
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" {\n"
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" dst[i] = ldsData[i];\n"
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" }\n"
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" if( gIdx == 0 )\n"
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" {\n"
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" dst[cb.m_numBlocks] = sum;\n"
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" }\n"
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"}\n";
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