/// <summary>
/// Detects OpenCL devices.
/// </summary>
/// <param name="predicate">
/// The predicate to include a given device.
/// </param>
/// <param name="registry">The registry to add all devices to.</param>
private static void GetDevicesInternal(
Predicate <CLDevice> predicate,
DeviceRegistry registry)
{
var devices = new IntPtr[MaxNumDevicesPerPlatform];
// Resolve all platforms
if (!CurrentAPI.IsSupported ||
CurrentAPI.GetNumPlatforms(out int numPlatforms) !=
CLError.CL_SUCCESS ||
numPlatforms < 1)
{
return;
}
var platforms = new IntPtr[numPlatforms];
if (CurrentAPI.GetPlatforms(platforms, ref numPlatforms) !=
CLError.CL_SUCCESS)
{
return;
}
foreach (var platform in platforms)
{
// Resolve all devices
int numDevices = devices.Length;
Array.Clear(devices, 0, numDevices);
if (CurrentAPI.GetDevices(
platform,
CLDeviceType.CL_DEVICE_TYPE_ALL,
devices,
out numDevices) != CLError.CL_SUCCESS)
{
continue;
}
for (int i = 0; i < numDevices; ++i)
{
// Resolve device and ignore invalid devices
var device = devices[i];
if (device == IntPtr.Zero)
{
continue;
}
// Check for available device
if (CurrentAPI.GetDeviceInfo <int>(
device,
CLDeviceInfoType.CL_DEVICE_AVAILABLE) == 0)
{
continue;
}
var desc = new CLDevice(platform, device);
registry.Register(desc, predicate);
}
}
}
static CLAccelerator()
{
var accelerators = ImmutableArray.CreateBuilder <CLAcceleratorId>();
var allAccelerators = ImmutableArray.CreateBuilder <CLAcceleratorId>();
var devices = new IntPtr[MaxNumDevicesPerPlatform];
try
{
// Resolve all platforms
if (!CurrentAPI.IsSupported ||
CurrentAPI.GetNumPlatforms(out int numPlatforms) !=
CLError.CL_SUCCESS ||
numPlatforms < 1)
{
return;
}
var platforms = new IntPtr[numPlatforms];
if (CurrentAPI.GetPlatforms(platforms, out numPlatforms) !=
CLError.CL_SUCCESS)
{
return;
}
foreach (var platform in platforms)
{
// Resolve all devices
int numDevices = devices.Length;
Array.Clear(devices, 0, numDevices);
if (CurrentAPI.GetDevices(
platform,
CLDeviceType.CL_DEVICE_TYPE_ALL,
devices,
out numDevices) != CLError.CL_SUCCESS)
{
continue;
}
for (int i = 0; i < numDevices; ++i)
{
// Resolve device and ignore invalid devices
var device = devices[i];
if (device == IntPtr.Zero)
{
continue;
}
// Check for available device
if (CurrentAPI.GetDeviceInfo <int>(
device,
CLDeviceInfoType.CL_DEVICE_AVAILABLE) == 0)
{
continue;
}
var acceleratorId = new CLAcceleratorId(platform, device);
allAccelerators.Add(acceleratorId);
if (acceleratorId.CVersion >= CLBackend.MinimumVersion)
{
accelerators.Add(acceleratorId);
}
}
}
}
catch (Exception)
{
// Ignore API-specific exceptions at this point
}
finally
{
CLAccelerators = accelerators.ToImmutable();
AllCLAccelerators = allAccelerators.ToImmutable();
}
}