Hotfix for Windows Mixed Reality sensors errors.

Revive/REV_CAPI.cpp

@@ -145,6 +145,9 @@ OVR_PUBLIC_FUNCTION(unsigned int) ovr_GetTrackerCount(ovrSession session)
 	if (!session)
 		return ovrError_InvalidSession;
 
+	if (session->Details->UseHack(SessionDetails::HACK_SPOOF_SENSORS))
+		return 2;
+
 	return (unsigned int)session->Details->TrackerCount;
 }
 
@@ -340,6 +343,14 @@ OVR_PUBLIC_FUNCTION(ovrTrackerPose) ovr_GetTrackerPose(ovrSession session, unsig
 	if (!session)
 		return tracker;
 
+	if (session->Details->UseHack(SessionDetails::HACK_SPOOF_SENSORS))
+	{
+		tracker.LeveledPose = OVR::Posef::Identity();
+		tracker.Pose = OVR::Posef::Identity();
+		tracker.TrackerFlags = ovrTracker_Connected;
+		return tracker;
+	}
+
 	// Get the index for this tracker.
 	vr::TrackedDeviceIndex_t trackers[vr::k_unMaxTrackedDeviceCount] = { vr::k_unTrackedDeviceIndexInvalid };
 	vr::VRSystem()->GetSortedTrackedDeviceIndicesOfClass(vr::TrackedDeviceClass_TrackingReference, trackers, vr::k_unMaxTrackedDeviceCount);

Revive/SessionDetails.cpp

@@ -4,10 +4,12 @@
 #include <Windows.h>
 #include <Shlwapi.h>
 #include <openvr.h>
+#include <vector>
 
 SessionDetails::HackInfo SessionDetails::m_known_hacks[] = {
-	{ "drt.exe", HACK_WAIT_IN_TRACKING_STATE, true },
-	{ "ultrawings.exe", HACK_FAKE_PRODUCT_NAME, true },
+	{ "drt.exe", nullptr, HACK_WAIT_IN_TRACKING_STATE, false }, // TODO: Fix this hack
+	{ "ultrawings.exe", nullptr, HACK_FAKE_PRODUCT_NAME, true },
+	{ nullptr, "holographic", HACK_SPOOF_SENSORS, true }
 };
 
 SessionDetails::SessionDetails()
@@ -19,9 +21,16 @@ SessionDetails::SessionDetails()
 	GetModuleFileNameA(NULL, filepath, MAX_PATH);
 	char* filename = PathFindFileNameA(filepath);
 
+	uint32_t size = vr::VRSystem()->GetStringTrackedDeviceProperty(vr::k_unTrackedDeviceIndex_Hmd,
+		vr::Prop_TrackingSystemName_String, nullptr, 0);
+	std::vector<char> driver(size);
+	vr::VRSystem()->GetStringTrackedDeviceProperty(vr::k_unTrackedDeviceIndex_Hmd,
+		vr::Prop_TrackingSystemName_String, driver.data(), size);
+
 	for (auto& hack : m_known_hacks)
 	{
-		if (_stricmp(filename, hack.m_filename) == 0)
+		if ((!hack.m_filename || _stricmp(filename, hack.m_filename) == 0) &&
+			(!hack.m_driver || strcmp(driver.data(), hack.m_driver) == 0))
 			m_hacks.emplace(hack.m_hack, hack);
 	}
 

Revive/SessionDetails.h

@@ -22,6 +22,11 @@ class SessionDetails
 		// Games like Ultrawings will actually check whether the product name contains the string
 		// "Oculus", so we use a fake name for the HMD to work around this issue.
 		HACK_FAKE_PRODUCT_NAME,
+
+		// Hack: Spoof the number of connected sensors.
+		// Some headsets don't have external trackers, so we have to spoof the number of connected
+		// sensors.
+		HACK_SPOOF_SENSORS,
 	};
 
 	SessionDetails();
@@ -41,6 +46,7 @@ class SessionDetails
 	struct HackInfo
 	{
 		const char* m_filename; // The filename of the main executable
+		const char* m_driver;	// The name of the driver
 		Hack m_hack;            // Which hack is it?
 		bool m_usehack;         // Should it use the hack?
 	};

ReviveOverlay/ReviveOverlay_resource.rc

@@ -7,8 +7,8 @@
 IDI_ICON1	ICON	DISCARDABLE	"revive.ico"
 
 VS_VERSION_INFO VERSIONINFO
-	FILEVERSION 1,2,0,2
-	PRODUCTVERSION 1,2,0,2
+	FILEVERSION 1,2,0,3
+	PRODUCTVERSION 1,2,0,3
 	FILEFLAGSMASK 0x3fL
 #ifdef _DEBUG
 	FILEFLAGS VS_FF_DEBUG