2 Bullet Continuous Collision Detection and Physics Library, http://bulletphysics.org
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3 Copyright (C) 2006 - 2011 Sony Computer Entertainment Inc.
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5 This software is provided 'as-is', without any express or implied warranty.
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6 In no event will the authors be held liable for any damages arising from the use of this software.
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7 Permission is granted to anyone to use this software for any purpose,
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8 including commercial applications, and to alter it and redistribute it freely,
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9 subject to the following restrictions:
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11 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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12 2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
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13 3. This notice may not be removed or altered from any source distribution.
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16 //original author: Roman Ponomarev
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17 //cleanup by Erwin Coumans
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19 #ifndef BT_OPENCL_UTILS_H
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20 #define BT_OPENCL_UTILS_H
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22 #include "btOpenCLInclude.h"
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25 #define BT_MAX_STRING_LENGTH 1024
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27 struct btOpenCLDeviceInfo
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29 char m_deviceName[BT_MAX_STRING_LENGTH];
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30 char m_deviceVendor[BT_MAX_STRING_LENGTH];
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31 char m_driverVersion[BT_MAX_STRING_LENGTH];
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32 char m_deviceExtensions[BT_MAX_STRING_LENGTH];
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34 cl_device_type m_deviceType;
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35 cl_uint m_computeUnits;
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36 size_t m_workitemDims;
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37 size_t m_workItemSize[3];
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38 size_t m_image2dMaxWidth;
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39 size_t m_image2dMaxHeight;
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40 size_t m_image3dMaxWidth;
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41 size_t m_image3dMaxHeight;
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42 size_t m_image3dMaxDepth;
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43 size_t m_workgroupSize;
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44 cl_uint m_clockFrequency;
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45 cl_ulong m_constantBufferSize;
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46 cl_ulong m_localMemSize;
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47 cl_ulong m_globalMemSize;
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48 cl_bool m_errorCorrectionSupport;
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49 cl_device_local_mem_type m_localMemType;
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50 cl_uint m_maxReadImageArgs;
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51 cl_uint m_maxWriteImageArgs;
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55 cl_uint m_addressBits;
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56 cl_ulong m_maxMemAllocSize;
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57 cl_command_queue_properties m_queueProperties;
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58 cl_bool m_imageSupport;
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59 cl_uint m_vecWidthChar;
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60 cl_uint m_vecWidthShort;
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61 cl_uint m_vecWidthInt;
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62 cl_uint m_vecWidthLong;
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63 cl_uint m_vecWidthFloat;
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64 cl_uint m_vecWidthDouble;
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68 struct btOpenCLPlatformInfo
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70 char m_platformVendor[BT_MAX_STRING_LENGTH];
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71 char m_platformName[BT_MAX_STRING_LENGTH];
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72 char m_platformVersion[BT_MAX_STRING_LENGTH];
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79 /// CL Context optionally takes a GL context. This is a generic type because we don't really want this code
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80 /// to have to understand GL types. It is a HGLRC in _WIN32 or a GLXContext otherwise.
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81 static cl_context createContextFromType(cl_device_type deviceType, cl_int* pErrNum, void* pGLCtx = 0, void* pGLDC = 0, int preferredDeviceIndex = -1, int preferredPlatformIndex= - 1);
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83 static int getNumDevices(cl_context cxMainContext);
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84 static cl_device_id getDevice(cl_context cxMainContext, int nr);
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85 static void getDeviceInfo(cl_device_id device, btOpenCLDeviceInfo& info);
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86 static void printDeviceInfo(cl_device_id device);
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88 static cl_kernel compileCLKernelFromString( cl_context clContext,cl_device_id device, const char* kernelSource, const char* kernelName, cl_int* pErrNum=0, cl_program prog=0,const char* additionalMacros = "" );
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91 static cl_program compileCLProgramFromString( cl_context clContext,cl_device_id device, const char* kernelSource, cl_int* pErrNum=0,const char* additionalMacros = "");
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92 ///compileCLProgramFromFile will attempt to save/load the binary precompiled program
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93 static cl_program compileCLProgramFromFile( cl_context clContext,cl_device_id device, cl_int* pErrNum=0,const char* additionalMacros = "" , const char* srcFileNameForCaching=0);
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96 //the following optional APIs provide access using specific platform information
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97 static int getNumPlatforms(cl_int* pErrNum=0);
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98 ///get the nr'th platform, where nr is in the range [0..getNumPlatforms)
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99 static cl_platform_id getPlatform(int nr, cl_int* pErrNum=0);
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100 static void getPlatformInfo(cl_platform_id platform, btOpenCLPlatformInfo& platformInfo);
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101 static const char* getSdkVendorName();
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102 static cl_context createContextFromPlatform(cl_platform_id platform, cl_device_type deviceType, cl_int* pErrNum, void* pGLCtx = 0, void* pGLDC = 0,int preferredDeviceIndex = -1, int preferredPlatformIndex= -1);
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107 #endif // BT_OPENCL_UTILS_H
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