internal static unsafe void Initialize(OpenXRHmd hmd)
{
baseHMD = hmd;
// make actions
for (int i = 0; i < HAND_PATH_COUNT; i++)
{
for (int j = 0; j < 2; j++)
{
ActionCreateInfo action_info = new ActionCreateInfo()
{
Type = StructureType.TypeActionCreateInfo,
ActionType = GetActionType((HAND_PATHS)i),
};
Span <byte> aname = new Span <byte>(action_info.ActionName, 32);
Span <byte> lname = new Span <byte>(action_info.LocalizedActionName, 32);
string fullname = ((HAND_PATHS)i).ToString() + "H" + j.ToString() + '\0';
SilkMarshal.StringIntoSpan(fullname.ToLower(), aname);
SilkMarshal.StringIntoSpan(fullname, lname);
fixed(Silk.NET.OpenXR.Action *aptr = &MappedActions[j, i])
hmd.Xr.CreateAction(hmd.globalActionSet, &action_info, aptr);
}
}
string allInputDetected = "";
// probe bindings for all profiles
for (int i = 0; i < InteractionProfiles.Length; i++)
{
ulong profile = 0;
hmd.Xr.StringToPath(hmd.Instance, InteractionProfiles[i], ref profile);
List <ActionSuggestedBinding> bindings = new List <ActionSuggestedBinding>();
// for each hand...
for (int hand = 0; hand < 2; hand++)
{
// for each path we want to bind...
for (int path = 0; path < HAND_PATH_COUNT; path++)
{
// list all possible paths that might be valid and pick the first one
List <string> possiblePaths = PathPriorities[path];
for (int pathattempt = 0; pathattempt < possiblePaths.Count; pathattempt++)
{
// get the hand at the start, then put in the attempt
string final_path = hand == (int)TouchControllerHand.Left ? "/user/hand/left" : "/user/hand/right";
final_path += possiblePaths[pathattempt];
ulong hp_ulong = 0;
hmd.Xr.StringToPath(hmd.Instance, final_path, ref hp_ulong);
var suggest = new ActionSuggestedBinding()
{
Action = MappedActions[hand, path],
Binding = hp_ulong
};
if (IsPathSupported(hmd, profile, &suggest))
{
// note that this controller has a touchpad/thumbstick
switch ((HAND_PATHS)path)
{
case HAND_PATHS.ThumbstickX:
HasThumbsticks.Add(profile);
break;
case HAND_PATHS.TrackpadX:
HasTouchpads.Add(profile);
break;
}
if (LogInputDetected)
{
allInputDetected += "\nGot " + final_path + " for " + InteractionProfiles[i];
}
// got one!
bindings.Add(suggest);
break;
}
}
}
}
// ok, we got all supported paths for this profile, lets do the final suggestion with all of them
if (bindings.Count > 0)
{
ActionSuggestedBinding[] final_bindings = bindings.ToArray();
fixed(ActionSuggestedBinding *asbptr = &final_bindings[0])
{
InteractionProfileSuggestedBinding suggested_bindings = new InteractionProfileSuggestedBinding()
{
Type = StructureType.TypeInteractionProfileSuggestedBinding,
InteractionProfile = profile,
CountSuggestedBindings = (uint)final_bindings.Length,
SuggestedBindings = asbptr
};
OpenXRHmd.CheckResult(hmd.Xr.SuggestInteractionProfileBinding(hmd.Instance, &suggested_bindings), "SuggestInteractionProfileBinding");
}
}
}
if (LogInputDetected)
{
ErrorFileLogger.WriteLogToFile(allInputDetected);
}
}
private unsafe void Prepare()
{
// Create our API object for OpenXR.
Xr = XR.GetApi();
Extensions.Clear();
//Extensions.Add("XR_KHR_vulkan_enable2");
Extensions.Add("XR_KHR_vulkan_enable");
Extensions.Add("XR_EXT_hp_mixed_reality_controller");
Extensions.Add("XR_HTC_vive_cosmos_controller_interaction");
Extensions.Add("XR_MSFT_hand_interaction");
Extensions.Add("XR_EXT_samsung_odyssey_controller");
uint propCount = 0;
Xr.EnumerateInstanceExtensionProperties((byte *)null, 0, &propCount, null);
ExtensionProperties[] props = new ExtensionProperties[propCount];
for (int i = 0; i < props.Length; i++)
{
props[i].Type = StructureType.TypeExtensionProperties;
fixed(ExtensionProperties *pptr = &props[0])
Xr.EnumerateInstanceExtensionProperties((byte *)null, propCount, ref propCount, pptr);
List <string> AvailableExtensions = new List <string>();
for (int i = 0; i < props.Length; i++)
{
fixed(void *nptr = props[i].ExtensionName)
AvailableExtensions.Add(Marshal.PtrToStringAnsi(new System.IntPtr(nptr)));
}
for (int i = 0; i < Extensions.Count; i++)
{
if (AvailableExtensions.Contains(Extensions[i]) == false)
{
Extensions.RemoveAt(i);
i--;
}
}
InstanceCreateInfo instanceCreateInfo;
var appInfo = new ApplicationInfo()
{
ApiVersion = new Version64(1, 0, 9)
};
// We've got to marshal our strings and put them into global, immovable memory. To do that, we use
// SilkMarshal.
Span <byte> appName = new Span <byte>(appInfo.ApplicationName, 128);
Span <byte> engName = new Span <byte>(appInfo.EngineName, 128);
SilkMarshal.StringIntoSpan(System.AppDomain.CurrentDomain.FriendlyName, appName);
SilkMarshal.StringIntoSpan("FocusEngine", engName);
var requestedExtensions = SilkMarshal.StringArrayToPtr(Extensions);
instanceCreateInfo = new InstanceCreateInfo
(
applicationInfo: appInfo,
enabledExtensionCount: (uint)Extensions.Count,
enabledExtensionNames: (byte **)requestedExtensions
);
// Now we're ready to make our instance!
CheckResult(Xr.CreateInstance(in instanceCreateInfo, ref Instance), "CreateInstance");
// For our benefit, let's log some information about the instance we've just created.
// skip this, as it crashes on Oculus runtime and is not needed
/*InstanceProperties properties = new();
* CheckResult(Xr.GetInstanceProperties(Instance, ref properties), "GetInstanceProperties");
*
* var runtimeName = SilkMarshal.PtrToString((nint)properties.RuntimeName);
* var runtimeVersion = ((Version)(Version64)properties.RuntimeVersion).ToString(3);
*
* Console.WriteLine($"[INFO] Application: Using OpenXR Runtime \"{runtimeName}\" v{runtimeVersion}");*/
// We're creating a head-mounted-display (HMD, i.e. a VR headset) example, so we ask for a runtime which
// supports that form factor. The response we get is a ulong that is the System ID.
var getInfo = new SystemGetInfo(formFactor: FormFactor.HeadMountedDisplay);
CheckResult(Xr.GetSystem(Instance, in getInfo, ref system_id), "GetSystem");
}