Method checkGraphicsInteropCapability

src/backend/cuda/device_manager.cpp:367–387

}

bool DeviceManager::checkGraphicsInteropCapability() {
    static std::once_flag checkInteropFlag;
    thread_local bool capable = true;

    std::call_once(checkInteropFlag, []() {
        unsigned int pCudaEnabledDeviceCount = 0;
        int pCudaGraphicsEnabledDeviceIds    = 0;
        cudaGetLastError();  // Reset Errors
        cudaError_t err = cudaGLGetDevices(
            &pCudaEnabledDeviceCount, &pCudaGraphicsEnabledDeviceIds,
            getDeviceCount(), cudaGLDeviceListAll);
        if (err == cudaErrorOperatingSystem) {
            // OS Support Failure - Happens when devices are in TCC mode or
            // do not have a display connected
            capable = false;
        }
        cudaGetLastError();  // Reset Errors
    });

    return capable;
}

DeviceManager &DeviceManager::getInstance() {
    static auto *my_instance = new DeviceManager();