bool initCLGLContext(boost::compute::context & ctx)
{
INFOM("Initializing OpenCL/OpenGL shared context");
#if 1
/* select appropriate device and platform */
cl_platform_id platform = nullptr;
cl_device_id device = nullptr;
if ((!utils::ocl::selectGLDeviceAndPlatform(&device, &platform)) &&
(!utils::ocl::selectPlatformAndDevice(&device, &platform)))
{
ERRORM("Failed to select an appropriate device or platform");
return false;
}
/* setup context */
cl_context_properties props[] = {
#if defined(FLUIDSIM_OS_MAC)
CL_CONTEXT_PROPERTY_USE_CGL_SHAREGROUP_APPLE,
(cl_context_properties) CGLGetShareGroup(CGLGetCurrentContext()),
#elif defined(FLUIDSIM_OS_UNIX)
CL_GL_CONTEXT_KHR, (cl_context_properties) glXGetCurrentContext(),
CL_GLX_DISPLAY_KHR, (cl_context_properties) glXGetCurrentDisplay(),
CL_CONTEXT_PLATFORM, (cl_context_properties) platform,
#elif defined(FLUIDSIM_OS_WIN)
CL_GL_CONTEXT_KHR, (cl_context_properties) wglGetCurrentContext(),
CL_WGL_HDC_KHR, (cl_context_properties) wglGetCurrentDC(),
CL_CONTEXT_PLATFORM, (cl_context_properties) platform,
#else
# error "Unsupported OS platform"
#endif
0
};
/* create opencl context */
cl_int err = CL_SUCCESS;
cl_context ctx_ = clCreateContext(props, 1, &device, nullptr, nullptr, &err);
if (err != CL_SUCCESS)
{
ERRORM("Failed to create OpenCL context: " << utils::ocl::errorToStr(err));
return false;
}
ctx = boost::compute::context(ctx_, false);
utils::ocl::printDeviceInfo(ctx.get_devices());
#else
try
{
/* create opencl context */
ctx = boost::compute::opengl_create_shared_context();
utils::ocl::printDeviceInfo(ctx.get_devices());
}
catch (const boost::compute::opencl_error & e)
{
ERRORM(e.what());
return false;
}
catch (const boost::compute::unsupported_extension_error & e)
{
ERRORM(e.what());
return false;
}
catch (const std::exception & e)
{
ERRORM("An unexpected error occured during opencl context initialization: " << e.what());
return false;
}
#endif
INFOM("Successfully initialized OpenCL context");
INFOM("Using device : " << ctx.get_device().name());
INFOM("Using platform : " << ctx.get_device().platform().name());
return true;
}
boost::compute::program OpenCL::createAndBuildProgram(std::string src, boost::compute::context ctx) {
LoggerType logger = LoggerType(boost::log::keywords::channel="NLPGraph::Util::OpenCL::createAndBuildProgram");
boost::compute::program bProgram = boost::compute::program::create_with_source(src, ctx);
try {
bProgram.build("-cl-std=CL1.1 -Werror");
} catch(...) {
std::string buildLog = bProgram.get_build_info<std::string>(CL_PROGRAM_BUILD_LOG,ctx.get_device());
LOG(severity_level::critical) << buildLog;
OpenCLExceptionType except;
except.msg = buildLog;
throw except;
}
return bProgram;
}
