498da0721b
Added Demos/ThreadingDemo showing how to use the cross-platform btThreadSupportInterface under Windows. Added Demos/ParticlesOpenCL showing how to run the NVidia particle demo under OpenCL implementations by AMD, NVidia and MiniCL (CPU)
96 lines
3.2 KiB
C++
96 lines
3.2 KiB
C++
/*
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Bullet Continuous Collision Detection and Physics Library, http://bulletphysics.org
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Copyright (C) 2006 - 2010 Sony Computer Entertainment Inc.
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This software is provided 'as-is', without any express or implied warranty.
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In no event will the authors be held liable for any damages arising from the use of this software.
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Permission is granted to anyone to use this software for any purpose,
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including commercial applications, and to alter it and redistribute it freely,
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subject to the following restrictions:
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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.
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2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
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3. This notice may not be removed or altered from any source distribution.
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*/
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#include <string.h>
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#include "btOclCommon.h"
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static char* spPlatformVendor =
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#if defined(CL_PLATFORM_MINI_CL)
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"MiniCL, SCEA";
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#elif defined(CL_PLATFORM_AMD)
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"Advanced Micro Devices, Inc.";
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#elif defined(CL_PLATFORM_NVIDIA)
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"NVIDIA Corporation";
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#else
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"Unknown Vendor";
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#endif
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cl_context btOclCommon::createContextFromType(cl_device_type deviceType, cl_int* pErrNum)
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{
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cl_uint numPlatforms;
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cl_platform_id platform = NULL;
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cl_int ciErrNum = clGetPlatformIDs(0, NULL, &numPlatforms);
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if(ciErrNum != CL_SUCCESS)
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{
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if(pErrNum != NULL) *pErrNum = ciErrNum;
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return NULL;
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}
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if(numPlatforms > 0)
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{
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cl_platform_id* platforms = new cl_platform_id[numPlatforms];
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ciErrNum = clGetPlatformIDs(numPlatforms, platforms, NULL);
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if(ciErrNum != CL_SUCCESS)
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{
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if(pErrNum != NULL) *pErrNum = ciErrNum;
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return NULL;
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}
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for (unsigned i = 0; i < numPlatforms; ++i)
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{
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char pbuf[128];
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ciErrNum = clGetPlatformInfo( platforms[i],
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CL_PLATFORM_VENDOR,
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sizeof(pbuf),
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pbuf,
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NULL);
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if(ciErrNum != CL_SUCCESS)
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{
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if(pErrNum != NULL) *pErrNum = ciErrNum;
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return NULL;
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}
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platform = platforms[i];
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if(!strcmp(pbuf, spPlatformVendor))
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{
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break;
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}
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}
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delete[] platforms;
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}
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/*
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* If we could find our platform, use it. Otherwise pass a NULL and get whatever the
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* implementation thinks we should be using.
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*/
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cl_context_properties cps[3] =
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{
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CL_CONTEXT_PLATFORM,
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(cl_context_properties)platform,
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0
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};
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/* Use NULL for backward compatibility */
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cl_context_properties* cprops = (NULL == platform) ? NULL : cps;
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cl_context retContext = clCreateContextFromType(cprops,
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CL_DEVICE_TYPE_ALL,
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NULL,
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NULL,
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&ciErrNum);
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if(pErrNum != NULL) *pErrNum = ciErrNum;
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return retContext;
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}
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