Demos/OpenCLClothDemo/btOpenCLSupport.h

   1 #ifndef BT_OPENCL_SUPPORT_HPP\r
   2 #define BT_OPENCL_SUPPORT_HPP\r
   3 \r
   4 // OpenCL support\r
   5 #include <CL/cl.hpp>\r
   6 \r
   7 namespace BTAcceleratedSoftBody\r
   8 {\r
   9         class OpenCLSupportHelper\r
  10         {\r
  11         private:\r
  12                 cl::Context m_context;\r
  13                 std::vector<cl::Device> m_devices;\r
  14                 cl::CommandQueue m_queue;\r
  15         public:\r
  16                 OpenCLSupportHelper()\r
  17                 {\r
  18                 }\r
  19 \r
  20                 virtual ~OpenCLSupportHelper()\r
  21                 {\r
  22                 }\r
  23 \r
  24                 cl::Device getDevice()\r
  25                 {\r
  26                         return m_devices[0];\r
  27                 }\r
  28 \r
  29                 cl::CommandQueue getCommandQueue()\r
  30                 {\r
  31                         return m_queue;\r
  32                 }\r
  33 \r
  34                 cl::Context getContext()\r
  35                 {\r
  36                         return m_context;\r
  37                 }\r
  38 \r
  39                 bool InitOpenCLDevice()\r
  40                 {\r
  41                         cl_int err;\r
  42 \r
  43                         std::vector<cl::Platform> platforms;\r
  44                         err = cl::Platform::get(&platforms);\r
  45                         checkErr(platforms.size() != 0 ? CL_SUCCESS : -1, "Platform::get()");\r
  46 \r
  47                         std::string platformVendor;\r
  48                         platforms[0].getInfo(CL_PLATFORM_VENDOR, &platformVendor);\r
  49                         //std::cout << "Platform is by: " << platformVendor << "\n";\r
  50 \r
  51                         intptr_t properties[] = {\r
  52                                 CL_CONTEXT_PLATFORM, (intptr_t)platforms[0](),\r
  53                                 0, 0\r
  54                         };\r
  55                         m_context = cl::Context(\r
  56                                 CL_DEVICE_TYPE_GPU, \r
  57                                 properties, \r
  58                                 NULL, \r
  59                                 NULL, \r
  60                                 &err);\r
  61 \r
  62                         if (err != CL_SUCCESS)\r
  63                         {\r
  64                                 btAssert( "Context::Context()" );\r
  65                         }\r
  66 \r
  67                         m_devices = m_context.getInfo<CL_CONTEXT_DEVICES>();\r
  68                         if( m_devices.size() <= 0 ) \r
  69                         {\r
  70                                 btAssert( "devices.size() > 0" );\r
  71                         }\r
  72                 \r
  73                         m_queue = cl::CommandQueue(m_context, m_devices[0], 0, &err);\r
  74                     if (err != CL_SUCCESS) \r
  75                         {\r
  76                                 btAssert( "CommandQueue::CommandQueue()");\r
  77                         }\r
  78                 }\r
  79         };\r
  80 \r
  81 \r
  82 } // namespace BTAcceleratedSoftBody\r
  83 \r
  84 #endif // #ifndef BT_OPENCL_SUPPORT_HPP