/// <summary>
/// Gets all devices of the platform that match the specified device type.
/// </summary>
/// <param name="deviceType">The type of devices that is to be retrieved.</param>
/// <exception cref="OpenClException">If the devices could not be retrieved, then a <see cref="OpenClException"/> is thrown.</exception>
/// <returns>Returns a list of all devices that matched the specified device type.</returns>
public IEnumerable <Device> GetDevices(Devices.DeviceType deviceType)
{
// Gets the number of available devices of the specified type
uint numberOfAvailableDevices;
Result result = DevicesNativeApi.GetDeviceIds(Handle, (Interop.Devices.DeviceType)deviceType, 0, null,
out numberOfAvailableDevices);
if (result != Result.Success)
{
throw new OpenClException("The number of available devices could not be queried.", result);
}
// Gets the pointers to the devices of the specified type
IntPtr[] devicePointers = new IntPtr[numberOfAvailableDevices];
result = DevicesNativeApi.GetDeviceIds(Handle, (Interop.Devices.DeviceType)deviceType,
numberOfAvailableDevices, devicePointers, out numberOfAvailableDevices);
if (result != Result.Success)
{
throw new OpenClException("The devices could not be retrieved.", result);
}
// Converts the pointer to device objects
foreach (IntPtr devicePointer in devicePointers)
{
yield return(new Device(devicePointer));
}
}
public uint GetDeviceCount(DeviceType deviceType)
{
Result result = DevicesNativeApi.GetDeviceIds(
Handle,
(Interop.Devices.DeviceType)deviceType,
0,
null,
out uint numberOfAvailableDevices
);
return(numberOfAvailableDevices);
}
/// <summary>
/// Provides a list of available OpenCL devices on the system
/// </summary>
/// <returns>A list of OpenCL devices</returns>
public static List <ComputeDeviceDesc> GetDevices()
{
List <ComputeDeviceDesc> ret = new List <ComputeDeviceDesc>();
// Gets the number of available platforms
uint numberOfAvailablePlatforms;
Result result = PlatformsNativeApi.GetPlatformIds(0, null, out numberOfAvailablePlatforms);
if (result != Result.Success)
{
throw new OpenClException("The number of platforms could not be queried.", result);
}
// Gets pointers to all the platforms
IntPtr[] platformPointers = new IntPtr[numberOfAvailablePlatforms];
result = PlatformsNativeApi.GetPlatformIds(numberOfAvailablePlatforms, platformPointers, out numberOfAvailablePlatforms);
if (result != Result.Success)
{
throw new OpenClException("The platforms could not be retrieved.", result);
}
// Converts the pointers to platform objects
int platformId = 0;
foreach (IntPtr platformPointer in platformPointers)
{
++platformId;
// Gets the number of available devices of the specified type
uint numberOfAvailableDevices;
Result result_d = DevicesNativeApi.GetDeviceIds(platformPointer, DeviceType.All, 0, null, out numberOfAvailableDevices);
if (result_d != Result.Success)
{
throw new OpenClException("The number of available devices could not be queried.", result_d);
}
// Gets the pointers to the devices of the specified type
IntPtr[] devicePointers = new IntPtr[numberOfAvailableDevices];
result_d = DevicesNativeApi.GetDeviceIds(platformPointer, DeviceType.All, numberOfAvailableDevices, devicePointers, out numberOfAvailableDevices);
if (result_d != Result.Success)
{
throw new OpenClException("The devices could not be retrieved.", result_d);
}
// Converts the pointer to device objects
int deviceId = 0;
foreach (IntPtr devicePointer in devicePointers)
{
++deviceId;
OpenCLComputeDeviceDesc devDesc = new OpenCLComputeDeviceDesc();
devDesc.platform = platformPointer;
devDesc.device = devicePointer;
devDesc.platformId = platformId;
devDesc.deviceId = deviceId;
ret.Add(devDesc);
}
}
return(ret);
}