stephenseo/EN605.617.81.FA21_StephenSeo_DitheringProject
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Support multiple OpenCL platforms

Browse source 
Previously, the code only checked the first OpenCL platform and failed
if thet platform didn't have any devices.
This commit is contained in:
Stephen Seo 2023-05-23 22:51:08 +09:00
parent 379fb4cadf
commit c1c271b77e
1 changed files with 42 additions and 16 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

36
src/opencl_handle.cc
View file

@ -694,18 +694,33 @@ OpenCLContext::OpenCLContext() : context_(nullptr), queue_(nullptr) {
//////////////////// set up cl_context
cl_int err_num;
cl_uint num_platforms;
cl_platform_id first_platform_id;
std::vector<cl_platform_id> platform_ids;
err_num = clGetPlatformIDs(1, &first_platform_id, &num_platforms);
if (err_num != CL_SUCCESS || num_platforms == 0) {
err_num = clGetPlatformIDs(0, nullptr, &num_platforms);
if (err_num != CL_SUCCESS) {
std::cout << "ERROR: OpenCLContext: Failed to query OpenCL platforms"
<< std::endl;
return;
} else if (num_platforms == 0) {
std::cout << "ERROR: OpenCLContext: Failed to find any OpenCL platforms"
<< std::endl;
return;
}
platform_ids.resize(num_platforms);
err_num = clGetPlatformIDs(num_platforms, platform_ids.data(), nullptr);
if (err_num != CL_SUCCESS) {
std::cout << "ERROR: OpenCLContext: Failed to get OpenCL platform id(s)"
<< std::endl;
return;
}
bool success = false;
for (auto i = 0; i < num_platforms; ++i) {
cl_context_properties context_properties[] = {
CL_CONTEXT_PLATFORM,
reinterpret_cast<cl_context_properties>(first_platform_id), 0};
reinterpret_cast<cl_context_properties>(platform_ids[i]), 0};
context_ = clCreateContextFromType(context_properties, CL_DEVICE_TYPE_GPU,
nullptr, nullptr, &err_num);
@ -719,8 +734,19 @@ OpenCLContext::OpenCLContext() : context_(nullptr), queue_(nullptr) {
std::cout << "ERROR: OpenCLContext: Failed to create CPU context"
<< std::endl;
context_ = nullptr;
return;
continue;
} else {
success = true;
break;
}
} else {
success = true;
break;
}
}
if (!success) {
std::cout << "ERROR: OpenCLContext: Failed to find a valid OpenCL context!"
<< std::endl;
}
//////////////////// end set up cl context