diff --git a/src/openvr/__init__.py b/src/openvr/__init__.py
index 240b83f..106990c 100644
--- a/src/openvr/__init__.py
+++ b/src/openvr/__init__.py
@@ -1,6 +1,6 @@
 #!/bin/env python
 
-# Unofficial python bindings for OpenVR API version 1.23.7
+# Unofficial python bindings for OpenVR API version 1.26.7
 # from https://github.com/cmbruns/pyopenvr
 # based on OpenVR C++ API at https://github.com/ValveSoftware/openvr
 
@@ -98,7 +98,7 @@ class ID3D12CommandQueue(Structure):
 ####################
 
 k_nSteamVRVersionMajor = 1
-k_nSteamVRVersionMinor = 23
+k_nSteamVRVersionMinor = 26
 k_nSteamVRVersionBuild = 7
 k_nDriverNone = 0xFFFFFFFF
 k_unMaxDriverDebugResponseSize = 32768
@@ -219,7 +219,6 @@ class ID3D12CommandQueue(Structure):
 k_pch_SteamVR_ForceWindows32bitVRMonitor = 'forceWindows32BitVRMonitor'
 k_pch_SteamVR_DebugInputBinding = 'debugInputBinding'
 k_pch_SteamVR_DoNotFadeToGrid = 'doNotFadeToGrid'
-k_pch_SteamVR_RenderCameraMode = 'renderCameraMode'
 k_pch_SteamVR_EnableSharedResourceJournaling = 'enableSharedResourceJournaling'
 k_pch_SteamVR_EnableSafeMode = 'enableSafeMode'
 k_pch_SteamVR_PreferredRefreshRate = 'preferredRefreshRate'
@@ -289,6 +288,7 @@ class ID3D12CommandQueue(Structure):
 k_pch_Perf_SaveTimingsOnExit_Bool = 'saveTimingsOnExit'
 k_pch_Perf_TestData_Float = 'perfTestData'
 k_pch_Perf_GPUProfiling_Bool = 'GPUProfiling'
+k_pch_Perf_GpuBusMonitoring_Bool = 'gpuBusMonitoring'
 k_pch_CollisionBounds_Section = 'collisionBounds'
 k_pch_CollisionBounds_Style_Int32 = 'CollisionBoundsStyle'
 k_pch_CollisionBounds_GroundPerimeterOn_Bool = 'CollisionBoundsGroundPerimeterOn'
@@ -346,6 +346,7 @@ class ID3D12CommandQueue(Structure):
 k_pch_Dashboard_DashboardScale = 'dashboardScale'
 k_pch_Dashboard_UseStandaloneSystemLayer = 'standaloneSystemLayer'
 k_pch_Dashboard_StickyDashboard = 'stickyDashboard'
+k_pch_Dashboard_AllowSteamOverlays_Bool = 'allowSteamOverlays'
 k_pch_modelskin_Section = 'modelskins'
 k_pch_Driver_Enable_Bool = 'enable'
 k_pch_Driver_BlockedBySafemode_Bool = 'blocked_by_safe_mode'
@@ -358,6 +359,7 @@ class ID3D12CommandQueue(Structure):
 k_pch_App_BindingAutosaveURLSuffix_String = 'AutosaveURL'
 k_pch_App_BindingLegacyAPISuffix_String = '_legacy'
 k_pch_App_BindingSteamVRInputAPISuffix_String = '_steamvrinput'
+k_pch_App_BindingOpenXRAPISuffix_String = '_openxr'
 k_pch_App_BindingCurrentURLSuffix_String = 'CurrentURL'
 k_pch_App_BindingPreviousURLSuffix_String = 'PreviousURL'
 k_pch_App_NeedToUpdateAutosaveSuffix_Bool = 'NeedToUpdateAutosave'
@@ -387,7 +389,7 @@ class ID3D12CommandQueue(Structure):
 k_unVROverlayMaxNameLength = 128  # The maximum length of an overlay name in bytes, counting the terminating null character.
 k_unMaxOverlayCount = 128  # The maximum number of overlays that can exist in the system at one time.
 k_unMaxOverlayIntersectionMaskPrimitivesCount = 32  # The maximum number of overlay intersection mask primitives per overlay
-IVROverlay_Version = 'IVROverlay_026'
+IVROverlay_Version = 'IVROverlay_027'
 IVROverlayView_Version = 'IVROverlayView_003'
 k_pch_Controller_Component_GDC2015 = 'gdc2015'  # Canonical coordinate system of the gdc 2015 wired controller, provided for backwards compatibility
 k_pch_Controller_Component_Base = 'base'  # For controllers with an unambiguous 'base'.
@@ -623,13 +625,20 @@ class ID3D12CommandQueue(Structure):
 Prop_CameraGlobalGain_Float = ENUM_VALUE_TYPE(2089)
 Prop_DashboardScale_Float = ENUM_VALUE_TYPE(2091)
 Prop_PeerButtonInfo_String = ENUM_VALUE_TYPE(2092)
+Prop_Hmd_SupportsHDR10_Bool = ENUM_VALUE_TYPE(2093)
+Prop_Hmd_EnableParallelRenderCameras_Bool = ENUM_VALUE_TYPE(2094)
+Prop_DriverProvidedChaperoneJson_String = ENUM_VALUE_TYPE(2095)
 Prop_IpdUIRangeMinMeters_Float = ENUM_VALUE_TYPE(2100)
 Prop_IpdUIRangeMaxMeters_Float = ENUM_VALUE_TYPE(2101)
 Prop_Hmd_SupportsHDCP14LegacyCompat_Bool = ENUM_VALUE_TYPE(2102)
 Prop_Hmd_SupportsMicMonitoring_Bool = ENUM_VALUE_TYPE(2103)
 Prop_Hmd_SupportsDisplayPortTrainingMode_Bool = ENUM_VALUE_TYPE(2104)
-Prop_SupportsRoomViewDirect_Bool = ENUM_VALUE_TYPE(2105)
-Prop_SupportsAppThrottling_Bool = ENUM_VALUE_TYPE(2106)
+Prop_Hmd_SupportsRoomViewDirect_Bool = ENUM_VALUE_TYPE(2105)
+Prop_Hmd_SupportsAppThrottling_Bool = ENUM_VALUE_TYPE(2106)
+Prop_Hmd_SupportsGpuBusMonitoring_Bool = ENUM_VALUE_TYPE(2107)
+Prop_DSCVersion_Int32 = ENUM_VALUE_TYPE(2110)
+Prop_DSCSliceCount_Int32 = ENUM_VALUE_TYPE(2111)
+Prop_DSCBPPx16_Int32 = ENUM_VALUE_TYPE(2112)
 Prop_DriverRequestedMuraCorrectionMode_Int32 = ENUM_VALUE_TYPE(2200)
 Prop_DriverRequestedMuraFeather_InnerLeft_Int32 = ENUM_VALUE_TYPE(2201)
 Prop_DriverRequestedMuraFeather_InnerRight_Int32 = ENUM_VALUE_TYPE(2202)
@@ -772,13 +781,13 @@ class ID3D12CommandQueue(Structure):
 VREvent_InputFocusCaptured = ENUM_VALUE_TYPE(400)
 VREvent_InputFocusReleased = ENUM_VALUE_TYPE(401)
 VREvent_SceneApplicationChanged = ENUM_VALUE_TYPE(404)
-VREvent_SceneFocusChanged = ENUM_VALUE_TYPE(405)
 VREvent_InputFocusChanged = ENUM_VALUE_TYPE(406)
 VREvent_SceneApplicationUsingWrongGraphicsAdapter = ENUM_VALUE_TYPE(408)
 VREvent_ActionBindingReloaded = ENUM_VALUE_TYPE(409)
 VREvent_HideRenderModels = ENUM_VALUE_TYPE(410)
 VREvent_ShowRenderModels = ENUM_VALUE_TYPE(411)
 VREvent_SceneApplicationStateChanged = ENUM_VALUE_TYPE(412)
+VREvent_SceneAppPipeDisconnected = ENUM_VALUE_TYPE(413)
 VREvent_ConsoleOpened = ENUM_VALUE_TYPE(420)
 VREvent_ConsoleClosed = ENUM_VALUE_TYPE(421)
 VREvent_OverlayShown = ENUM_VALUE_TYPE(500)
@@ -935,6 +944,8 @@ class ID3D12CommandQueue(Structure):
 k_EButton_IndexController_A = ENUM_VALUE_TYPE(2)
 k_EButton_IndexController_B = ENUM_VALUE_TYPE(1)
 k_EButton_IndexController_JoyStick = ENUM_VALUE_TYPE(35)
+k_EButton_Reserved0 = ENUM_VALUE_TYPE(50)
+k_EButton_Reserved1 = ENUM_VALUE_TYPE(51)
 k_EButton_Max = ENUM_VALUE_TYPE(64)
 
 EVRMouseButton = ENUM_TYPE
@@ -1499,13 +1510,13 @@ class ID3D12CommandQueue(Structure):
 VROverlayTransform_Invalid = ENUM_VALUE_TYPE(-1)
 VROverlayTransform_Absolute = ENUM_VALUE_TYPE(0)
 VROverlayTransform_TrackedDeviceRelative = ENUM_VALUE_TYPE(1)
-VROverlayTransform_SystemOverlay = ENUM_VALUE_TYPE(2)
 VROverlayTransform_TrackedComponent = ENUM_VALUE_TYPE(3)
 VROverlayTransform_Cursor = ENUM_VALUE_TYPE(4)
 VROverlayTransform_DashboardTab = ENUM_VALUE_TYPE(5)
 VROverlayTransform_DashboardThumb = ENUM_VALUE_TYPE(6)
 VROverlayTransform_Mountable = ENUM_VALUE_TYPE(7)
 VROverlayTransform_Projection = ENUM_VALUE_TYPE(8)
+VROverlayTransform_Subview = ENUM_VALUE_TYPE(9)
 
 VROverlayFlags = ENUM_TYPE
 VROverlayFlags_NoDashboardTab = ENUM_VALUE_TYPE(8)
@@ -1526,6 +1537,7 @@ class ID3D12CommandQueue(Structure):
 VROverlayFlags_WantsModalBehavior = ENUM_VALUE_TYPE(1048576)
 VROverlayFlags_IsPremultiplied = ENUM_VALUE_TYPE(2097152)
 VROverlayFlags_IgnoreTextureAlpha = ENUM_VALUE_TYPE(4194304)
+VROverlayFlags_Reserved = ENUM_VALUE_TYPE(67108864)
 
 VRMessageOverlayResponse = ENUM_TYPE
 VRMessageOverlayResponse_ButtonPress_0 = ENUM_VALUE_TYPE(0)
@@ -1655,6 +1667,8 @@ class ID3D12CommandQueue(Structure):
 openvr_bool = c_ubyte
 
 PropertyTypeTag_t = c_uint32
+vrshared_uint64_t = c_uint64
+vrshared_double = c_double
 SpatialAnchorHandle_t = c_uint32
 glSharedTextureHandle_t = c_void_p
 glInt_t = c_int32
@@ -1855,19 +1869,6 @@ class Texture_t(Structure):
     ]
 
 
-class TrackedDevicePose_t(Structure):
-    """describes a single pose for a tracked object"""
-
-    _fields_ = [
-        ("mDeviceToAbsoluteTracking", HmdMatrix34_t),
-        ("vVelocity", HmdVector3_t),
-        ("vAngularVelocity", HmdVector3_t),
-        ("eTrackingResult", ETrackingResult),
-        ("bPoseIsValid", openvr_bool),
-        ("bDeviceIsConnected", openvr_bool),
-    ]
-
-
 class VRTextureBounds_t(Structure):
     """
     Allows the application to control what part of the provided texture will be used in the
@@ -1910,6 +1911,19 @@ class VRTextureWithPoseAndDepth_t(VRTextureWithPose_t):
     ]
 
 
+class TrackedDevicePose_t(Structure):
+    """describes a single pose for a tracked object"""
+
+    _fields_ = [
+        ("mDeviceToAbsoluteTracking", HmdMatrix34_t),
+        ("vVelocity", HmdVector3_t),
+        ("vAngularVelocity", HmdVector3_t),
+        ("eTrackingResult", ETrackingResult),
+        ("bPoseIsValid", openvr_bool),
+        ("bDeviceIsConnected", openvr_bool),
+    ]
+
+
 class VRVulkanTextureData_t(Structure):
     """
     Data required for passing Vulkan textures to IVRCompositor::Submit.
@@ -2392,6 +2406,13 @@ class Compositor_CumulativeStats(Structure):
         ("m_nNumFramePresentsTimedOut", c_uint32),
         ("m_nNumDroppedFramesTimedOut", c_uint32),
         ("m_nNumReprojectedFramesTimedOut", c_uint32),
+        ("m_nNumFrameSubmits", c_uint32),
+        ("m_flSumCompositorCPUTimeMS", vrshared_double),
+        ("m_flSumCompositorGPUTimeMS", vrshared_double),
+        ("m_flSumTargetFrameTimes", vrshared_double),
+        ("m_flSumApplicationCPUTimeMS", vrshared_double),
+        ("m_flSumApplicationGPUTimeMS", vrshared_double),
+        ("m_nNumFramesWithDepth", c_uint32),
     ]
 
 
@@ -4992,8 +5013,6 @@ class IVROverlay_FnTable(Structure):
         ("getOverlayTransformTrackedDeviceRelative", OPENVR_FNTABLE_CALLTYPE(EVROverlayError, VROverlayHandle_t, POINTER(TrackedDeviceIndex_t), POINTER(HmdMatrix34_t))),
         ("setOverlayTransformTrackedDeviceComponent", OPENVR_FNTABLE_CALLTYPE(EVROverlayError, VROverlayHandle_t, TrackedDeviceIndex_t, c_char_p)),
         ("getOverlayTransformTrackedDeviceComponent", OPENVR_FNTABLE_CALLTYPE(EVROverlayError, VROverlayHandle_t, POINTER(TrackedDeviceIndex_t), c_char_p, c_uint32)),
-        ("getOverlayTransformOverlayRelative", OPENVR_FNTABLE_CALLTYPE(EVROverlayError, VROverlayHandle_t, POINTER(VROverlayHandle_t), POINTER(HmdMatrix34_t))),
-        ("setOverlayTransformOverlayRelative", OPENVR_FNTABLE_CALLTYPE(EVROverlayError, VROverlayHandle_t, VROverlayHandle_t, POINTER(HmdMatrix34_t))),
         ("setOverlayTransformCursor", OPENVR_FNTABLE_CALLTYPE(EVROverlayError, VROverlayHandle_t, POINTER(HmdVector2_t))),
         ("getOverlayTransformCursor", OPENVR_FNTABLE_CALLTYPE(EVROverlayError, VROverlayHandle_t, POINTER(HmdVector2_t))),
         ("setOverlayTransformProjection", OPENVR_FNTABLE_CALLTYPE(EVROverlayError, VROverlayHandle_t, ETrackingUniverseOrigin, POINTER(HmdMatrix34_t), POINTER(VROverlayProjection_t), EVREye)),
@@ -5237,6 +5256,9 @@ def setOverlaySortOrder(self, overlayHandle, sortOrder) -> None:
         Within a category overlays are rendered lowest sort order to highest sort order. Overlays with the same
         sort order are rendered back to front base on distance from the HMD.
 
+        Subview overlays are always drawn immediately on top of their parent overlay, and the sort order is
+        only relative to their peer subviews for that overlay.
+
         Sort order defaults to 0.
         """
         fn = self.function_table.setOverlaySortOrder
@@ -5386,21 +5408,6 @@ def getOverlayTransformTrackedDeviceComponent(self, overlayHandle):
         openvr.error_code.OverlayError.check_error_value(error)
         return deviceIndex, bytes(componentName.value).decode('utf-8')
 
-    def getOverlayTransformOverlayRelative(self, overlayHandle):
-        """Gets the transform if it is relative to another overlay. Returns an error if the transform is some other type."""
-        fn = self.function_table.getOverlayTransformOverlayRelative
-        overlayHandleParent = VROverlayHandle_t()
-        parentOverlayToOverlayTransform = HmdMatrix34_t()
-        error = fn(overlayHandle, byref(overlayHandleParent), byref(parentOverlayToOverlayTransform))
-        openvr.error_code.OverlayError.check_error_value(error)
-        return overlayHandleParent.value, parentOverlayToOverlayTransform
-
-    def setOverlayTransformOverlayRelative(self, overlayHandle, overlayHandleParent, parentOverlayToOverlayTransform) -> None:
-        """Sets the transform to relative to the transform of the specified overlay. This overlays visibility will also track the parents visibility"""
-        fn = self.function_table.setOverlayTransformOverlayRelative
-        error = fn(overlayHandle, overlayHandleParent, byref(parentOverlayToOverlayTransform))
-        openvr.error_code.OverlayError.check_error_value(error)
-
     def setOverlayTransformCursor(self, cursorOverlayHandle, hotspot) -> None:
         """
         Sets the hotspot for the specified overlay when that overlay is used as a cursor. These are in texture space with 0,0 in the upper left corner of
diff --git a/src/openvr/libopenvr_api_32.dll b/src/openvr/libopenvr_api_32.dll
index 2c61e24..c77eadd 100644
Binary files a/src/openvr/libopenvr_api_32.dll and b/src/openvr/libopenvr_api_32.dll differ
diff --git a/src/openvr/libopenvr_api_32.so b/src/openvr/libopenvr_api_32.so
index 01e1339..2c4b6a9 100644
Binary files a/src/openvr/libopenvr_api_32.so and b/src/openvr/libopenvr_api_32.so differ
diff --git a/src/openvr/libopenvr_api_64.dll b/src/openvr/libopenvr_api_64.dll
index 2df5818..9bcb286 100644
Binary files a/src/openvr/libopenvr_api_64.dll and b/src/openvr/libopenvr_api_64.dll differ
diff --git a/src/openvr/libopenvr_api_64.so b/src/openvr/libopenvr_api_64.so
index 75bc5f1..c2a62d7 100644
Binary files a/src/openvr/libopenvr_api_64.so and b/src/openvr/libopenvr_api_64.so differ
diff --git a/src/openvr/version.py b/src/openvr/version.py
index 28e6827..932b112 100644
--- a/src/openvr/version.py
+++ b/src/openvr/version.py
@@ -1,7 +1,7 @@
 # Store the version here so:
 # 1) we don't load dependencies by storing it in __init__.py
 # 2) we can import it in setup.py for the same reason
-# 3) we can import it into your module module
+# 3) we can import it into your module
 # http://stackoverflow.com/questions/458550/standard-way-to-embed-version-into-python-package
 
-__version__ = '1.23.0701'
+__version__ = '1.26.0701'
diff --git a/src/translate/generator.py b/src/translate/generator.py
index 28af437..67ac392 100644
--- a/src/translate/generator.py
+++ b/src/translate/generator.py
@@ -367,7 +367,7 @@ def write_version(version, file_out):
     # Store the version here so:
     # 1) we don't load dependencies by storing it in __init__.py
     # 2) we can import it in setup.py for the same reason
-    # 3) we can import it into your module module
+    # 3) we can import it into your module
     # http://stackoverflow.com/questions/458550/standard-way-to-embed-version-into-python-package
 
     __version__ = '{".".join([str(v) for v in version])}'
diff --git a/src/translate/openvr.h b/src/translate/openvr.h
index 2033f57..7fdfa2a 100644
--- a/src/translate/openvr.h
+++ b/src/translate/openvr.h
@@ -16,7 +16,7 @@
 namespace vr
 {
 	static const uint32_t k_nSteamVRVersionMajor = 1;
-	static const uint32_t k_nSteamVRVersionMinor = 23;
+	static const uint32_t k_nSteamVRVersionMinor = 26;
 	static const uint32_t k_nSteamVRVersionBuild = 7;
 } // namespace vr
 
@@ -104,40 +104,6 @@ struct VRBoneTransform_t
 	HmdQuaternionf_t orientation;
 };
 
-#pragma pack( pop )
-
-} // namespace vr
-
-#endif
-
-// vrtypes.h
-
-#ifndef _INCLUDE_VRTYPES_H
-#define _INCLUDE_VRTYPES_H
-
-// Forward declarations to avoid requiring vulkan.h
-struct VkDevice_T;
-struct VkPhysicalDevice_T;
-struct VkInstance_T;
-struct VkQueue_T;
-
-// Forward declarations to avoid requiring d3d12.h
-struct ID3D12Resource;
-struct ID3D12CommandQueue;
-
-namespace vr
-{
-#pragma pack( push, 8 )
-
-/** A handle for a spatial anchor.  This handle is only valid during the session it was created in.
-* Anchors that live beyond one session should be saved by their string descriptors. */
-typedef uint32_t SpatialAnchorHandle_t;
-
-typedef void* glSharedTextureHandle_t;
-typedef int32_t glInt_t;
-typedef uint32_t glUInt_t;
-
-
 /** Used to return the post-distortion UVs for each color channel.
 * UVs range from 0 to 1 with 0,0 in the upper left corner of the
 * source render target. The 0,0 to 1,1 range covers a single eye. */
@@ -164,9 +130,9 @@ enum ETextureType
 	TextureType_DirectX12 = 4, // Handle is a pointer to a D3D12TextureData_t structure
 	TextureType_DXGISharedHandle = 5, // Handle is a HANDLE DXGI share handle, only supported for Overlay render targets.
 									  // this texture is used directly by our renderer, so only perform atomic (copyresource or resolve) on it
-	TextureType_Metal = 6, // Handle is a MTLTexture conforming to the MTLSharedTexture protocol. Textures submitted to IVRCompositor::Submit which
-						   // are of type MTLTextureType2DArray assume layer 0 is the left eye texture (vr::EVREye::Eye_left), layer 1 is the right
-						   // eye texture (vr::EVREye::Eye_Right)
+	TextureType_Metal = 6,	// Handle is a MTLTexture conforming to the MTLSharedTexture protocol. Textures submitted to IVRCompositor::Submit which
+							// are of type MTLTextureType2DArray assume layer 0 is the left eye texture (vr::EVREye::Eye_left), layer 1 is the right
+							// eye texture (vr::EVREye::Eye_Right)
 };
 
 enum EColorSpace
@@ -183,6 +149,81 @@ struct Texture_t
 	EColorSpace eColorSpace;
 };
 
+/** Allows the application to control what part of the provided texture will be used in the
+* frame buffer. */
+struct VRTextureBounds_t
+{
+	float uMin, vMin;
+	float uMax, vMax;
+};
+
+/** Allows specifying pose used to render provided scene texture (if different from value returned by WaitGetPoses). */
+struct VRTextureWithPose_t : public Texture_t
+{
+	HmdMatrix34_t mDeviceToAbsoluteTracking; // Actual pose used to render scene textures.
+};
+
+struct VRTextureDepthInfo_t
+{
+	void* handle; // See ETextureType definition above
+	HmdMatrix44_t mProjection;
+	HmdVector2_t vRange; // 0..1
+};
+
+struct VRTextureWithDepth_t : public Texture_t
+{
+	VRTextureDepthInfo_t depth;
+};
+
+struct VRTextureWithPoseAndDepth_t : public VRTextureWithPose_t
+{
+	VRTextureDepthInfo_t depth;
+};
+
+// 64-bit types that are part of public structures
+// that are replicated in shared memory.
+#if defined(__linux__) || defined(__APPLE__)
+typedef uint64_t vrshared_uint64_t __attribute__ ((aligned(8)));
+typedef double vrshared_double __attribute__ ((aligned(8)));
+#else
+typedef uint64_t vrshared_uint64_t;
+typedef double vrshared_double;
+#endif
+
+#pragma pack( pop )
+
+} // namespace vr
+
+#endif
+
+// vrtypes.h
+
+#ifndef _INCLUDE_VRTYPES_H
+#define _INCLUDE_VRTYPES_H
+
+// Forward declarations to avoid requiring vulkan.h
+struct VkDevice_T;
+struct VkPhysicalDevice_T;
+struct VkInstance_T;
+struct VkQueue_T;
+
+// Forward declarations to avoid requiring d3d12.h
+struct ID3D12Resource;
+struct ID3D12CommandQueue;
+
+namespace vr
+{
+#pragma pack( push, 8 )
+
+/** A handle for a spatial anchor.  This handle is only valid during the session it was created in.
+* Anchors that live beyond one session should be saved by their string descriptors. */
+typedef uint32_t SpatialAnchorHandle_t;
+
+typedef void* glSharedTextureHandle_t;
+typedef int32_t glInt_t;
+typedef uint32_t glUInt_t;
+
+
 // Handle to a shared texture (HANDLE on Windows obtained using OpenSharedResource).
 typedef uint64_t SharedTextureHandle_t;
 #define INVALID_SHARED_TEXTURE_HANDLE	((vr::SharedTextureHandle_t)0)
@@ -484,14 +525,22 @@ enum ETrackedDeviceProperty
 	// Prop_DashboardLayoutPathName_String 		= 2090, // DELETED
 	Prop_DashboardScale_Float 					= 2091,
 	Prop_PeerButtonInfo_String					= 2092,
+	Prop_Hmd_SupportsHDR10_Bool					= 2093,
+	Prop_Hmd_EnableParallelRenderCameras_Bool	= 2094,
+	Prop_DriverProvidedChaperoneJson_String		= 2095, // higher priority than Prop_DriverProvidedChaperonePath_String
 
 	Prop_IpdUIRangeMinMeters_Float 				= 2100,
 	Prop_IpdUIRangeMaxMeters_Float 				= 2101,
 	Prop_Hmd_SupportsHDCP14LegacyCompat_Bool	= 2102,
 	Prop_Hmd_SupportsMicMonitoring_Bool 		= 2103,
 	Prop_Hmd_SupportsDisplayPortTrainingMode_Bool	= 2104,
-	Prop_SupportsRoomViewDirect_Bool 			= 2105,
-	Prop_SupportsAppThrottling_Bool				= 2106,
+	Prop_Hmd_SupportsRoomViewDirect_Bool 		= 2105,
+	Prop_Hmd_SupportsAppThrottling_Bool			= 2106,
+	Prop_Hmd_SupportsGpuBusMonitoring_Bool		= 2107,
+
+	Prop_DSCVersion_Int32						= 2110,
+	Prop_DSCSliceCount_Int32					= 2111,
+	Prop_DSCBPPx16_Int32						= 2112,
 
 	// Driver requested mura correction properties
 	Prop_DriverRequestedMuraCorrectionMode_Int32		= 2200,
@@ -613,37 +662,6 @@ static const VRActionSetHandle_t k_ulInvalidActionSetHandle = 0;
 static const VRInputValueHandle_t k_ulInvalidInputValueHandle = 0;
 
 
-/** Allows the application to control what part of the provided texture will be used in the
-* frame buffer. */
-struct VRTextureBounds_t
-{
-	float uMin, vMin;
-	float uMax, vMax;
-};
-
-/** Allows specifying pose used to render provided scene texture (if different from value returned by WaitGetPoses). */
-struct VRTextureWithPose_t : public Texture_t
-{
-	HmdMatrix34_t mDeviceToAbsoluteTracking; // Actual pose used to render scene textures.
-};
-
-struct VRTextureDepthInfo_t
-{
-	void* handle; // See ETextureType definition above
-	HmdMatrix44_t mProjection;
-	HmdVector2_t vRange; // 0..1
-};
-
-struct VRTextureWithDepth_t : public Texture_t
-{
-	VRTextureDepthInfo_t depth;
-};
-
-struct VRTextureWithPoseAndDepth_t : public VRTextureWithPose_t
-{
-	VRTextureDepthInfo_t depth;
-};
-
 /** Allows the application to control how scene textures are used by the compositor when calling Submit. */
 enum EVRSubmitFlags
 {
@@ -783,7 +801,7 @@ enum EVREventType
 	// VREvent_SceneFocusLost			= 402, // data is process
 	// VREvent_SceneFocusGained			= 403, // data is process
 	VREvent_SceneApplicationChanged		= 404, // data is process - The App actually drawing the scene changed (usually to or from the compositor)
-	VREvent_SceneFocusChanged			= 405, // data is process - New app got access to draw the scene
+	// VREvent_SceneFocusChanged		= 405, // data is process - This is defunct and will not be called.
 	VREvent_InputFocusChanged			= 406, // data is process
 	// VREvent_SceneApplicationSecondaryRenderingStarted = 407,
 	VREvent_SceneApplicationUsingWrongGraphicsAdapter = 408, // data is process
@@ -794,6 +812,8 @@ enum EVREventType
 
 	VREvent_SceneApplicationStateChanged = 412, // No data; but query VRApplications()->GetSceneApplicationState();
 
+	VREvent_SceneAppPipeDisconnected    = 413, // data is process - Called when the scene app's pipe has been closed.
+
 	VREvent_ConsoleOpened               = 420,
 	VREvent_ConsoleClosed               = 421,
 
@@ -1007,6 +1027,9 @@ enum EVRButtonId
 	k_EButton_IndexController_B		= k_EButton_ApplicationMenu,
 	k_EButton_IndexController_JoyStick	= k_EButton_Axis3,
 
+	k_EButton_Reserved0			= 50,
+	k_EButton_Reserved1			= 51,
+
 	k_EButton_Max				= 64
 };
 
@@ -2801,7 +2824,6 @@ namespace vr
 	static const char * const k_pch_SteamVR_ForceWindows32bitVRMonitor = "forceWindows32BitVRMonitor";
 	static const char * const k_pch_SteamVR_DebugInputBinding = "debugInputBinding";
 	static const char * const k_pch_SteamVR_DoNotFadeToGrid = "doNotFadeToGrid";
-	static const char * const k_pch_SteamVR_RenderCameraMode = "renderCameraMode";
 	static const char * const k_pch_SteamVR_EnableSharedResourceJournaling = "enableSharedResourceJournaling";
 	static const char * const k_pch_SteamVR_EnableSafeMode = "enableSafeMode";
 	static const char * const k_pch_SteamVR_PreferredRefreshRate = "preferredRefreshRate";
@@ -2895,6 +2917,7 @@ namespace vr
 	static const char * const k_pch_Perf_SaveTimingsOnExit_Bool = "saveTimingsOnExit";
 	static const char * const k_pch_Perf_TestData_Float = "perfTestData";
 	static const char * const k_pch_Perf_GPUProfiling_Bool = "GPUProfiling";
+	static const char * const k_pch_Perf_GpuBusMonitoring_Bool = "gpuBusMonitoring";
 
 	//-----------------------------------------------------------------------------
 	// collision bounds keys
@@ -2967,6 +2990,7 @@ namespace vr
 	static const char * const k_pch_Dashboard_DashboardScale = "dashboardScale";
 	static const char * const k_pch_Dashboard_UseStandaloneSystemLayer = "standaloneSystemLayer";
 	static const char * const k_pch_Dashboard_StickyDashboard = "stickyDashboard";
+	static const char * const k_pch_Dashboard_AllowSteamOverlays_Bool = "allowSteamOverlays";
 
 	//-----------------------------------------------------------------------------
 	// model skin keys
@@ -2997,7 +3021,8 @@ namespace vr
 	// per-app keys - the section name for these is the app key itself. Some of these are prefixed by the controller type
 	static const char* const k_pch_App_BindingAutosaveURLSuffix_String = "AutosaveURL";
 	static const char* const k_pch_App_BindingLegacyAPISuffix_String = "_legacy";
-	static const char* const k_pch_App_BindingSteamVRInputAPISuffix_String = "_steamvrinput";
+	static const char *const k_pch_App_BindingSteamVRInputAPISuffix_String = "_steamvrinput";
+	static const char *const k_pch_App_BindingOpenXRAPISuffix_String = "_openxr";
 	static const char* const k_pch_App_BindingCurrentURLSuffix_String = "CurrentURL";
 	static const char* const k_pch_App_BindingPreviousURLSuffix_String = "PreviousURL";
 	static const char* const k_pch_App_NeedToUpdateAutosaveSuffix_Bool = "NeedToUpdateAutosave";
@@ -3278,6 +3303,16 @@ struct Compositor_CumulativeStats
 	uint32_t m_nNumFramePresentsTimedOut;
 	uint32_t m_nNumDroppedFramesTimedOut;
 	uint32_t m_nNumReprojectedFramesTimedOut;
+
+	/** For items in this section, divide all the values by m_nNumFrameSubmits. */
+	uint32_t m_nNumFrameSubmits;
+	vrshared_double m_flSumCompositorCPUTimeMS;
+	vrshared_double m_flSumCompositorGPUTimeMS;
+	vrshared_double m_flSumTargetFrameTimes;
+	vrshared_double m_flSumApplicationCPUTimeMS;
+	vrshared_double m_flSumApplicationGPUTimeMS;
+
+	uint32_t m_nNumFramesWithDepth; // total frames submitted with depth by the current application
 };
 
 struct Compositor_StageRenderSettings
@@ -3737,13 +3772,14 @@ namespace vr
 		VROverlayTransform_Invalid					= -1,
 		VROverlayTransform_Absolute					= 0,
 		VROverlayTransform_TrackedDeviceRelative	= 1,
-		VROverlayTransform_SystemOverlay			= 2,
+		//VROverlayTransform_SystemOverlay			= 2, // Deleted from the SDK.
 		VROverlayTransform_TrackedComponent 		= 3,
 		VROverlayTransform_Cursor					= 4,
 		VROverlayTransform_DashboardTab				= 5,
 		VROverlayTransform_DashboardThumb			= 6,
 		VROverlayTransform_Mountable				= 7,
 		VROverlayTransform_Projection				= 8,
+		VROverlayTransform_Subview					= 9,
 	};
 
 	/** Overlay control settings */
@@ -3805,6 +3841,9 @@ namespace vr
 
 		// If this is set, the alpha values of the overlay texture will be ignored
 		VROverlayFlags_IgnoreTextureAlpha = 1 << 22,
+
+		// Do not use
+		VROverlayFlags_Reserved = 1 << 26,
 	};
 
 	enum VRMessageOverlayResponse
@@ -3981,6 +4020,9 @@ namespace vr
 		*	Within a category overlays are rendered lowest sort order to highest sort order. Overlays with the same
 		*	sort order are rendered back to front base on distance from the HMD.
 		*
+		*	Subview overlays are always drawn immediately on top of their parent overlay, and the sort order is
+		*	only relative to their peer subviews for that overlay.
+		*
 		*	Sort order defaults to 0. */
 		virtual EVROverlayError SetOverlaySortOrder( VROverlayHandle_t ulOverlayHandle, uint32_t unSortOrder ) = 0;
 
@@ -4041,12 +4083,6 @@ namespace vr
 		/** Gets the transform information when the overlay is rendering on a component. */
 		virtual EVROverlayError GetOverlayTransformTrackedDeviceComponent( VROverlayHandle_t ulOverlayHandle, TrackedDeviceIndex_t *punDeviceIndex, VR_OUT_STRING() char *pchComponentName, uint32_t unComponentNameSize ) = 0;
 
-		/** Gets the transform if it is relative to another overlay. Returns an error if the transform is some other type. */
-		virtual vr::EVROverlayError GetOverlayTransformOverlayRelative( VROverlayHandle_t ulOverlayHandle, VROverlayHandle_t *ulOverlayHandleParent, HmdMatrix34_t *pmatParentOverlayToOverlayTransform ) = 0;
-
-		/** Sets the transform to relative to the transform of the specified overlay. This overlays visibility will also track the parents visibility */
-		virtual vr::EVROverlayError SetOverlayTransformOverlayRelative( VROverlayHandle_t ulOverlayHandle, VROverlayHandle_t ulOverlayHandleParent, const HmdMatrix34_t *pmatParentOverlayToOverlayTransform ) = 0;
-
 		/** Sets the hotspot for the specified overlay when that overlay is used as a cursor. These are in texture space with 0,0 in the upper left corner of
 		* the texture and 1,1 in the lower right corner of the texture. */
 		virtual EVROverlayError SetOverlayTransformCursor( VROverlayHandle_t ulCursorOverlayHandle, const HmdVector2_t *pvHotspot ) = 0;
@@ -4228,7 +4264,7 @@ namespace vr
 		virtual void CloseMessageOverlay() = 0;
 	};
 
-	static const char * const IVROverlay_Version = "IVROverlay_026";
+	static const char * const IVROverlay_Version = "IVROverlay_027";
 
 } // namespace vr
 
diff --git a/src/translate/openvr_capi.h b/src/translate/openvr_capi.h
index 4046df6..e054f8c 100644
--- a/src/translate/openvr_capi.h
+++ b/src/translate/openvr_capi.h
@@ -24,7 +24,7 @@
 #endif
 
 // OPENVR API export macro
-#if defined( _WIN32 ) && !defined( _X360 )
+#if defined( _WIN32 )
 	#if defined( OPENVR_API_EXPORTS )
 	#define S_API EXTERN_C __declspec( dllexport )
 	#elif defined( OPENVR_API_NODLL )
@@ -61,6 +61,16 @@ typedef uint64_t VRActionSetHandle_t;
 typedef uint64_t VRInputValueHandle_t;
 typedef uint64_t PathHandle_t;
 
+// 64-bit types that are part of public structures
+// that are replicated in shared memory.
+#if defined(__linux__) || defined(__APPLE__)
+typedef uint64_t vrshared_uint64_t __attribute__ ((aligned(8)));
+typedef double vrshared_double __attribute__ ((aligned(8)));
+#else
+typedef uint64_t vrshared_uint64_t;
+typedef double vrshared_double;
+#endif
+
 
 // OpenVR Constants
 
@@ -120,7 +130,7 @@ static const unsigned long k_unVROverlayMaxKeyLength = 128;
 static const unsigned long k_unVROverlayMaxNameLength = 128;
 static const unsigned long k_unMaxOverlayCount = 128;
 static const unsigned long k_unMaxOverlayIntersectionMaskPrimitivesCount = 32;
-static const char * IVROverlay_Version = "IVROverlay_026";
+static const char * IVROverlay_Version = "IVROverlay_027";
 static const char * IVROverlayView_Version = "IVROverlayView_003";
 static const unsigned long k_unHeadsetViewMaxWidth = 3840;
 static const unsigned long k_unHeadsetViewMaxHeight = 2160;
@@ -196,7 +206,6 @@ static const char * k_pch_SteamVR_HaveStartedTutorialForNativeChaperoneDriver_Bo
 static const char * k_pch_SteamVR_ForceWindows32bitVRMonitor = "forceWindows32BitVRMonitor";
 static const char * k_pch_SteamVR_DebugInputBinding = "debugInputBinding";
 static const char * k_pch_SteamVR_DoNotFadeToGrid = "doNotFadeToGrid";
-static const char * k_pch_SteamVR_RenderCameraMode = "renderCameraMode";
 static const char * k_pch_SteamVR_EnableSharedResourceJournaling = "enableSharedResourceJournaling";
 static const char * k_pch_SteamVR_EnableSafeMode = "enableSafeMode";
 static const char * k_pch_SteamVR_PreferredRefreshRate = "preferredRefreshRate";
@@ -266,6 +275,7 @@ static const char * k_pch_Perf_AllowTimingStore_Bool = "allowTimingStore";
 static const char * k_pch_Perf_SaveTimingsOnExit_Bool = "saveTimingsOnExit";
 static const char * k_pch_Perf_TestData_Float = "perfTestData";
 static const char * k_pch_Perf_GPUProfiling_Bool = "GPUProfiling";
+static const char * k_pch_Perf_GpuBusMonitoring_Bool = "gpuBusMonitoring";
 static const char * k_pch_CollisionBounds_Section = "collisionBounds";
 static const char * k_pch_CollisionBounds_Style_Int32 = "CollisionBoundsStyle";
 static const char * k_pch_CollisionBounds_GroundPerimeterOn_Bool = "CollisionBoundsGroundPerimeterOn";
@@ -323,6 +333,7 @@ static const char * k_pch_Dashboard_DesktopScale = "desktopScale";
 static const char * k_pch_Dashboard_DashboardScale = "dashboardScale";
 static const char * k_pch_Dashboard_UseStandaloneSystemLayer = "standaloneSystemLayer";
 static const char * k_pch_Dashboard_StickyDashboard = "stickyDashboard";
+static const char * k_pch_Dashboard_AllowSteamOverlays_Bool = "allowSteamOverlays";
 static const char * k_pch_modelskin_Section = "modelskins";
 static const char * k_pch_Driver_Enable_Bool = "enable";
 static const char * k_pch_Driver_BlockedBySafemode_Bool = "blocked_by_safe_mode";
@@ -335,6 +346,7 @@ static const char * k_pch_TrackingOverride_Section = "TrackingOverrides";
 static const char * k_pch_App_BindingAutosaveURLSuffix_String = "AutosaveURL";
 static const char * k_pch_App_BindingLegacyAPISuffix_String = "_legacy";
 static const char * k_pch_App_BindingSteamVRInputAPISuffix_String = "_steamvrinput";
+static const char * k_pch_App_BindingOpenXRAPISuffix_String = "_openxr";
 static const char * k_pch_App_BindingCurrentURLSuffix_String = "CurrentURL";
 static const char * k_pch_App_BindingPreviousURLSuffix_String = "PreviousURL";
 static const char * k_pch_App_NeedToUpdateAutosaveSuffix_Bool = "NeedToUpdateAutosave";
@@ -402,6 +414,10 @@ static const char * k_pchPathUserElbowLeft = "/user/elbow/left";
 static const char * k_pchPathUserElbowRight = "/user/elbow/right";
 static const char * k_pchPathUserKneeLeft = "/user/knee/left";
 static const char * k_pchPathUserKneeRight = "/user/knee/right";
+static const char * k_pchPathUserWristLeft = "/user/wrist/left";
+static const char * k_pchPathUserWristRight = "/user/wrist/right";
+static const char * k_pchPathUserAnkleLeft = "/user/ankle/left";
+static const char * k_pchPathUserAnkleRight = "/user/ankle/right";
 static const char * k_pchPathUserWaist = "/user/waist";
 static const char * k_pchPathUserChest = "/user/chest";
 static const char * k_pchPathUserCamera = "/user/camera";
@@ -631,13 +647,20 @@ typedef enum ETrackedDeviceProperty
 	ETrackedDeviceProperty_Prop_CameraGlobalGain_Float = 2089,
 	ETrackedDeviceProperty_Prop_DashboardScale_Float = 2091,
 	ETrackedDeviceProperty_Prop_PeerButtonInfo_String = 2092,
+	ETrackedDeviceProperty_Prop_Hmd_SupportsHDR10_Bool = 2093,
+	ETrackedDeviceProperty_Prop_Hmd_EnableParallelRenderCameras_Bool = 2094,
+	ETrackedDeviceProperty_Prop_DriverProvidedChaperoneJson_String = 2095,
 	ETrackedDeviceProperty_Prop_IpdUIRangeMinMeters_Float = 2100,
 	ETrackedDeviceProperty_Prop_IpdUIRangeMaxMeters_Float = 2101,
 	ETrackedDeviceProperty_Prop_Hmd_SupportsHDCP14LegacyCompat_Bool = 2102,
 	ETrackedDeviceProperty_Prop_Hmd_SupportsMicMonitoring_Bool = 2103,
 	ETrackedDeviceProperty_Prop_Hmd_SupportsDisplayPortTrainingMode_Bool = 2104,
-	ETrackedDeviceProperty_Prop_SupportsRoomViewDirect_Bool = 2105,
-	ETrackedDeviceProperty_Prop_SupportsAppThrottling_Bool = 2106,
+	ETrackedDeviceProperty_Prop_Hmd_SupportsRoomViewDirect_Bool = 2105,
+	ETrackedDeviceProperty_Prop_Hmd_SupportsAppThrottling_Bool = 2106,
+	ETrackedDeviceProperty_Prop_Hmd_SupportsGpuBusMonitoring_Bool = 2107,
+	ETrackedDeviceProperty_Prop_DSCVersion_Int32 = 2110,
+	ETrackedDeviceProperty_Prop_DSCSliceCount_Int32 = 2111,
+	ETrackedDeviceProperty_Prop_DSCBPPx16_Int32 = 2112,
 	ETrackedDeviceProperty_Prop_DriverRequestedMuraCorrectionMode_Int32 = 2200,
 	ETrackedDeviceProperty_Prop_DriverRequestedMuraFeather_InnerLeft_Int32 = 2201,
 	ETrackedDeviceProperty_Prop_DriverRequestedMuraFeather_InnerRight_Int32 = 2202,
@@ -790,13 +813,13 @@ typedef enum EVREventType
 	EVREventType_VREvent_InputFocusCaptured = 400,
 	EVREventType_VREvent_InputFocusReleased = 401,
 	EVREventType_VREvent_SceneApplicationChanged = 404,
-	EVREventType_VREvent_SceneFocusChanged = 405,
 	EVREventType_VREvent_InputFocusChanged = 406,
 	EVREventType_VREvent_SceneApplicationUsingWrongGraphicsAdapter = 408,
 	EVREventType_VREvent_ActionBindingReloaded = 409,
 	EVREventType_VREvent_HideRenderModels = 410,
 	EVREventType_VREvent_ShowRenderModels = 411,
 	EVREventType_VREvent_SceneApplicationStateChanged = 412,
+	EVREventType_VREvent_SceneAppPipeDisconnected = 413,
 	EVREventType_VREvent_ConsoleOpened = 420,
 	EVREventType_VREvent_ConsoleClosed = 421,
 	EVREventType_VREvent_OverlayShown = 500,
@@ -957,6 +980,8 @@ typedef enum EVRButtonId
 	EVRButtonId_k_EButton_IndexController_A = 2,
 	EVRButtonId_k_EButton_IndexController_B = 1,
 	EVRButtonId_k_EButton_IndexController_JoyStick = 35,
+	EVRButtonId_k_EButton_Reserved0 = 50,
+	EVRButtonId_k_EButton_Reserved1 = 51,
 	EVRButtonId_k_EButton_Max = 64,
 } EVRButtonId;
 
@@ -1568,13 +1593,13 @@ typedef enum VROverlayTransformType
 	VROverlayTransformType_VROverlayTransform_Invalid = -1,
 	VROverlayTransformType_VROverlayTransform_Absolute = 0,
 	VROverlayTransformType_VROverlayTransform_TrackedDeviceRelative = 1,
-	VROverlayTransformType_VROverlayTransform_SystemOverlay = 2,
 	VROverlayTransformType_VROverlayTransform_TrackedComponent = 3,
 	VROverlayTransformType_VROverlayTransform_Cursor = 4,
 	VROverlayTransformType_VROverlayTransform_DashboardTab = 5,
 	VROverlayTransformType_VROverlayTransform_DashboardThumb = 6,
 	VROverlayTransformType_VROverlayTransform_Mountable = 7,
 	VROverlayTransformType_VROverlayTransform_Projection = 8,
+	VROverlayTransformType_VROverlayTransform_Subview = 9,
 } VROverlayTransformType;
 
 typedef enum VROverlayFlags
@@ -1597,6 +1622,7 @@ typedef enum VROverlayFlags
 	VROverlayFlags_WantsModalBehavior = 1048576,
 	VROverlayFlags_IsPremultiplied = 2097152,
 	VROverlayFlags_IgnoreTextureAlpha = 4194304,
+	VROverlayFlags_Reserved = 67108864,
 } VROverlayFlags;
 
 typedef enum VRMessageOverlayResponse
@@ -1963,16 +1989,6 @@ typedef struct Texture_t
 	enum EColorSpace eColorSpace;
 } Texture_t;
 
-typedef struct TrackedDevicePose_t
-{
-	struct HmdMatrix34_t mDeviceToAbsoluteTracking;
-	struct HmdVector3_t vVelocity;
-	struct HmdVector3_t vAngularVelocity;
-	enum ETrackingResult eTrackingResult;
-	bool bPoseIsValid;
-	bool bDeviceIsConnected;
-} TrackedDevicePose_t;
-
 typedef struct VRTextureBounds_t
 {
 	float uMin;
@@ -2013,6 +2029,16 @@ typedef struct VRTextureWithPoseAndDepth_t
 	struct VRTextureDepthInfo_t depth;
 } VRTextureWithPoseAndDepth_t;
 
+typedef struct TrackedDevicePose_t
+{
+	struct HmdMatrix34_t mDeviceToAbsoluteTracking;
+	struct HmdVector3_t vVelocity;
+	struct HmdVector3_t vAngularVelocity;
+	enum ETrackingResult eTrackingResult;
+	bool bPoseIsValid;
+	bool bDeviceIsConnected;
+} TrackedDevicePose_t;
+
 typedef struct VRVulkanTextureData_t
 {
 	uint64_t m_nImage;
@@ -2341,6 +2367,13 @@ typedef struct Compositor_CumulativeStats
 	uint32_t m_nNumFramePresentsTimedOut;
 	uint32_t m_nNumDroppedFramesTimedOut;
 	uint32_t m_nNumReprojectedFramesTimedOut;
+	uint32_t m_nNumFrameSubmits;
+	vrshared_double m_flSumCompositorCPUTimeMS;
+	vrshared_double m_flSumCompositorGPUTimeMS;
+	vrshared_double m_flSumTargetFrameTimes;
+	vrshared_double m_flSumApplicationCPUTimeMS;
+	vrshared_double m_flSumApplicationGPUTimeMS;
+	uint32_t m_nNumFramesWithDepth;
 } Compositor_CumulativeStats;
 
 typedef struct Compositor_StageRenderSettings
@@ -2921,8 +2954,6 @@ struct VR_IVROverlay_FnTable
 	EVROverlayError (OPENVR_FNTABLE_CALLTYPE *GetOverlayTransformTrackedDeviceRelative)(VROverlayHandle_t ulOverlayHandle, TrackedDeviceIndex_t * punTrackedDevice, struct HmdMatrix34_t * pmatTrackedDeviceToOverlayTransform);
 	EVROverlayError (OPENVR_FNTABLE_CALLTYPE *SetOverlayTransformTrackedDeviceComponent)(VROverlayHandle_t ulOverlayHandle, TrackedDeviceIndex_t unDeviceIndex, char * pchComponentName);
 	EVROverlayError (OPENVR_FNTABLE_CALLTYPE *GetOverlayTransformTrackedDeviceComponent)(VROverlayHandle_t ulOverlayHandle, TrackedDeviceIndex_t * punDeviceIndex, char * pchComponentName, uint32_t unComponentNameSize);
-	EVROverlayError (OPENVR_FNTABLE_CALLTYPE *GetOverlayTransformOverlayRelative)(VROverlayHandle_t ulOverlayHandle, VROverlayHandle_t * ulOverlayHandleParent, struct HmdMatrix34_t * pmatParentOverlayToOverlayTransform);
-	EVROverlayError (OPENVR_FNTABLE_CALLTYPE *SetOverlayTransformOverlayRelative)(VROverlayHandle_t ulOverlayHandle, VROverlayHandle_t ulOverlayHandleParent, struct HmdMatrix34_t * pmatParentOverlayToOverlayTransform);
 	EVROverlayError (OPENVR_FNTABLE_CALLTYPE *SetOverlayTransformCursor)(VROverlayHandle_t ulCursorOverlayHandle, struct HmdVector2_t * pvHotspot);
 	EVROverlayError (OPENVR_FNTABLE_CALLTYPE *GetOverlayTransformCursor)(VROverlayHandle_t ulOverlayHandle, struct HmdVector2_t * pvHotspot);
 	EVROverlayError (OPENVR_FNTABLE_CALLTYPE *SetOverlayTransformProjection)(VROverlayHandle_t ulOverlayHandle, ETrackingUniverseOrigin eTrackingOrigin, struct HmdMatrix34_t * pmatTrackingOriginToOverlayTransform, struct VROverlayProjection_t * pProjection, EVREye eEye);