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pull/26281/head
kallaballa 2 months ago
parent 4cbb96b396
commit 3edcf410b6
1 changed files with 98 additions and 91 deletions
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  1. 189
      modules/core/src/opengl.cpp

189
modules/core/src/opengl.cpp
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@ -1641,11 +1641,11 @@ Context& initializeContextFromGL()
#elif !defined(HAVE_OPENCL_OPENGL_SHARING)
NO_OPENCL_SHARING_ERROR;
#else
cl_uint platformsCnt;
cl_uint devCnt;
cl_device_id* devices;
cl_uint devUsed;
cl_context context;
cl_uint platformsCnt = 0;
cl_uint devCnt = 0;
cl_device_id* devices = nullptr;
cl_uint devUsed = 0;
cl_context context = nullptr;
cl_int status = clGetPlatformIDs(0, NULL, &platformsCnt);
if (status != CL_SUCCESS)
@ -1667,102 +1667,109 @@ Context& initializeContextFromGL()
if (status != CL_SUCCESS)
CV_Error_(cv::Error::OpenCLInitError, ("OpenCL: No devices available: %d", status));
devices = new cl_device_id[devCnt];
try {
devices = new cl_device_id[devCnt];
status = clGetDeviceIDs(platforms[i], CL_DEVICE_TYPE_GPU, devCnt, devices, NULL);
if (status != CL_SUCCESS)
CV_Error_(cv::Error::OpenCLInitError, ("OpenCL: Can't get platform devices: %d", status));
for (unsigned int j = 0; (!sharingSupported && (j < devCnt)); ++j) {
size_t extensionSize;
status = clGetDeviceInfo(devices[j], CL_DEVICE_EXTENSIONS, 0, NULL, &extensionSize );
status = clGetDeviceIDs(platforms[i], CL_DEVICE_TYPE_GPU, devCnt, devices, NULL);
if (status != CL_SUCCESS)
CV_Error_(cv::Error::OpenCLInitError, ("OpenCL: No devices available: %d", status));
if(extensionSize > 0)
{
char* extensions = nullptr;
try {
extensions = new char[extensionSize];
status = clGetDeviceInfo(devices[j], CL_DEVICE_EXTENSIONS, extensionSize, extensions, &extensionSize);
if (status != CL_SUCCESS)
continue;
} catch(std::exception& ex) {
CV_Error(cv::Error::OpenCLInitError, "OpenCL: Exception thrown during device extensions gathering");
}
CV_Error_(cv::Error::OpenCLInitError, ("OpenCL: Can't get platform devices: %d", status));
for (unsigned int j = 0; (!sharingSupported && (j < devCnt)); ++j) {
size_t extensionSize;
status = clGetDeviceInfo(devices[j], CL_DEVICE_EXTENSIONS, 0, NULL, &extensionSize );
if (status != CL_SUCCESS)
CV_Error_(cv::Error::OpenCLInitError, ("OpenCL: No devices available: %d", status));
if(extensionSize > 0)
{
char* extensions = nullptr;
try {
extensions = new char[extensionSize];
status = clGetDeviceInfo(devices[j], CL_DEVICE_EXTENSIONS, extensionSize, extensions, &extensionSize);
if (status != CL_SUCCESS)
continue;
} catch(...) {
CV_Error(cv::Error::OpenCLInitError, "OpenCL: Exception thrown during device extensions gathering");
}
std::string devString;
std::string devString;
if(extensions != nullptr) {
devString = extensions;
delete[] extensions;
}
else {
CV_Error(cv::Error::OpenCLInitError, "OpenCL: Unexpected error during device extensions gathering");
}
if(extensions != nullptr) {
devString = extensions;
delete[] extensions;
}
else {
CV_Error(cv::Error::OpenCLInitError, "OpenCL: Unexpected error during device extensions gathering");
}
size_t oldPos = 0;
size_t spacePos = devString.find(' ', oldPos); // extensions string is space delimited
while (spacePos != devString.npos) {
if (strcmp(GL_SHARING_EXTENSION,
devString.substr(oldPos, spacePos - oldPos).c_str())
== 0) {
// Device supports context sharing with OpenGL
devUsed = i;
sharingSupported = true;
break;
size_t oldPos = 0;
size_t spacePos = devString.find(' ', oldPos); // extensions string is space delimited
while (spacePos != devString.npos) {
if (strcmp(GL_SHARING_EXTENSION,
devString.substr(oldPos, spacePos - oldPos).c_str())
== 0) {
// Device supports context sharing with OpenGL
devUsed = i;
sharingSupported = true;
break;
}
do {
oldPos = spacePos + 1;
spacePos = devString.find(' ', oldPos);
} while (spacePos == oldPos);
}
do {
oldPos = spacePos + 1;
spacePos = devString.find(' ', oldPos);
} while (spacePos == oldPos);
}
}
}
if (!sharingSupported)
} catch(...) {
CV_Error(cv::Error::OpenCLInitError, "OpenCL: Exception thrown during device information gathering");
if(devices != nullptr) {
delete[] devices;
}
continue;
}
// Define OS-specific context properties and create the OpenCL context
#if defined (__APPLE__)
CGLContextObj cglContext = CGLGetCurrentContext();
CGLShareGroupObj cglShareGroup = CGLGetShareGroup(cglContext);
cl_context_properties props[] =
{
CL_CONTEXT_PROPERTY_USE_CGL_SHAREGROUP_APPLE, (cl_context_properties)cglShareGroup,
0
};
context = clCreateContext(props, 0,0, NULL, NULL, &ciErrNum);
#elif defined(__ANDROID__)
cl_context_properties props[] =
{
CL_GL_CONTEXT_KHR, (cl_context_properties)glXGetCurrentContext(),
CL_GLX_DISPLAY_KHR, (cl_context_properties)glXGetCurrentDisplay(),
CL_CONTEXT_PLATFORM, (cl_context_properties)platforms[i],
0
};
context = clCreateContext(props, 1, &devices[devUsed], NULL, NULL, &status);
#elif defined(_WIN32)
cl_context_properties props[] =
{
CL_GL_CONTEXT_KHR, (cl_context_properties)wglGetCurrentContext(),
CL_WGL_HDC_KHR, (cl_context_properties)wglGetCurrentDC(),
CL_CONTEXT_PLATFORM, (cl_context_properties)platforms[i],
0
};
context = clCreateContext(props, 1, &devices[devUsed], NULL, NULL, &status);
#elif defined(__linux__)
cl_context_properties props[] =
{
CL_GL_CONTEXT_KHR, (cl_context_properties)glXGetCurrentContext(),
CL_GLX_DISPLAY_KHR, (cl_context_properties)glXGetCurrentDisplay(),
CL_CONTEXT_PLATFORM, (cl_context_properties)platforms[i],
0
};
context = clCreateContext(props, 1, &devices[devUsed], NULL, NULL, &status);
#endif
if (sharingSupported) {
// Define OS-specific context properties and create the OpenCL context
#if defined (__APPLE__)
CGLContextObj cglContext = CGLGetCurrentContext();
CGLShareGroupObj cglShareGroup = CGLGetShareGroup(cglContext);
cl_context_properties props[] =
{
CL_CONTEXT_PROPERTY_USE_CGL_SHAREGROUP_APPLE, (cl_context_properties)cglShareGroup,
0
};
context = clCreateContext(props, 0,0, NULL, NULL, &ciErrNum);
#elif defined(__ANDROID__)
cl_context_properties props[] =
{
CL_GL_CONTEXT_KHR, (cl_context_properties)glXGetCurrentContext(),
CL_GLX_DISPLAY_KHR, (cl_context_properties)glXGetCurrentDisplay(),
CL_CONTEXT_PLATFORM, (cl_context_properties)platforms[i],
0
};
context = clCreateContext(props, 1, &devices[devUsed], NULL, NULL, &status);
#elif defined(_WIN32)
cl_context_properties props[] =
{
CL_GL_CONTEXT_KHR, (cl_context_properties)wglGetCurrentContext(),
CL_WGL_HDC_KHR, (cl_context_properties)wglGetCurrentDC(),
CL_CONTEXT_PLATFORM, (cl_context_properties)platforms[i],
0
};
context = clCreateContext(props, 1, &devices[devUsed], NULL, NULL, &status);
#elif defined(__linux__)
cl_context_properties props[] =
{
CL_GL_CONTEXT_KHR, (cl_context_properties)glXGetCurrentContext(),
CL_GLX_DISPLAY_KHR, (cl_context_properties)glXGetCurrentDisplay(),
CL_CONTEXT_PLATFORM, (cl_context_properties)platforms[i],
0
};
context = clCreateContext(props, 1, &devices[devUsed], NULL, NULL, &status);
#endif
}
if (status != CL_SUCCESS)
CV_Error_(cv::Error::OpenCLInitError, ("OpenCL: Can't create context for OpenGL interop: %d", status));

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