public void CreateDeviceWithDeviceGroupInfo()
{
ExtensionProperties[] availableExtensions = Instance.EnumerateExtensionProperties();
if (!availableExtensions.Contains(Constant.InstanceExtension.KhxDeviceGroupCreation))
{
return;
}
var instance = new Instance(new InstanceCreateInfo(
enabledExtensionNames: new[] { Constant.InstanceExtension.KhxDeviceGroupCreation }));
PhysicalDeviceGroupPropertiesKhx physicalDeviceGroup = instance.EnumeratePhysicalDeviceGroupsKhx()[0];
// We need a pointer to the array of native handles.
IntPtr devicePtrs = Interop.Struct.AllocToPointer(physicalDeviceGroup.PhysicalDevices.ToHandleArray());
// Fill in the device group create info struct.
var deviceGroupCreateInfo = new DeviceGroupDeviceCreateInfoKhx(physicalDeviceGroup.PhysicalDevices.Length, devicePtrs);
// We also need a pointer to the create info struct itself.
IntPtr createInfoPtr = Interop.Struct.AllocToPointer(ref deviceGroupCreateInfo);
// Finally, pass the device group create info pointer to the `Next` chain of device create info.
Device device = physicalDeviceGroup.PhysicalDevices[0].CreateDevice(new DeviceCreateInfo(
new[] { new DeviceQueueCreateInfo(0, 1, 1.0f) },
next: createInfoPtr));
// Make sure to free unmanaged allocations.
Interop.Free(createInfoPtr);
Interop.Free(devicePtrs);
}
internal static void FromNative(ref Native native, PhysicalDevice[] physicalDevices, out PhysicalDeviceGroupPropertiesKhx managed)
{
managed.Next = native.Next;
managed.PhysicalDevices = physicalDevices;
managed.SubsetAllocation = native.SubsetAllocation;
}
