Function OIDNDevice oidnNewDevice

api/api.cpp:261–308

  }

  OIDN_API OIDNDevice oidnNewDevice(OIDNDeviceType inType)
  {
    DeviceType type = static_cast<DeviceType>(inType);
    Ref<Device> device = nullptr;

    OIDN_TRY
      OIDN_INIT_CONTEXT(ctx, type);

      if (type == DeviceType::Default)
      {
        const int numDevices = ctx.getNumPhysicalDevices();
        if (numDevices == 0)
          throw Exception(Error::UnsupportedHardware, "no supported devices found");

        // Check whether the user wants to override the default device
        std::string deviceStr;
        if (getEnvVar("OIDN_DEFAULT_DEVICE", deviceStr) && !deviceStr.empty())
        {
          if (isdigit(deviceStr[0]))
          {
            const int id = fromString<int>(deviceStr);
            if (id >= 0 && id < numDevices)
              device = ctx.newDevice(id);
          }
          else
          {
            try
            {
              type = fromString<DeviceType>(deviceStr);
            }
            catch (...) {}

            if (ctx.isDeviceSupported(type))
              device = ctx.newDevice(type);
          }
        }

        if (!device)
          device = ctx.newDevice(0);
      }
      else
      {
        device = ctx.newDevice(type);
      }
    OIDN_CATCH

    return reinterpret_cast<OIDNDevice>(device.detach());
  }

  OIDN_API OIDNDevice oidnNewDeviceByID(int physicalDeviceID)
  {