Add OpenXR palm pose extension support

11 files changed, 229 insertions, 29 deletions

diff --git a/modules/openxr/SCsub b/modules/openxr/SCsub
index 593d1ff3c1..eb9b71d6a3 100644
--- a/modules/openxr/SCsub
+++ b/modules/openxr/SCsub
@@ -85,6 +85,7 @@ if env["platform"] == "android":
 if env["vulkan"]:
     env_openxr.add_source_files(module_obj, "extensions/openxr_vulkan_extension.cpp")
 
+env_openxr.add_source_files(module_obj, "extensions/openxr_palm_pose_extension.cpp")
 env_openxr.add_source_files(module_obj, "extensions/openxr_htc_vive_tracker_extension.cpp")
 
 env.modules_sources += module_obj
diff --git a/modules/openxr/action_map/openxr_action_map.cpp b/modules/openxr/action_map/openxr_action_map.cpp
index 0eb5302442..185e44c29d 100644
--- a/modules/openxr/action_map/openxr_action_map.cpp
+++ b/modules/openxr/action_map/openxr_action_map.cpp
@@ -157,7 +157,11 @@ void OpenXRActionMap::remove_interaction_profile(Ref<OpenXRInteractionProfile> p
 }
 
 void OpenXRActionMap::create_default_action_sets() {
-	// Note, if you make changes here make sure to delete your default_action_map.tres file of it will load an old version.
+	// Note:
+	// - if you make changes here make sure to delete your default_action_map.tres file of it will load an old version.
+	// - our palm pose is only available if the relevant extension is supported,
+	//   we still want it to be part of our action map as we may deploy the same game to platforms that do and don't support it.
+	// - the same applies for interaction profiles that are only supported if the relevant extension is supported.
 
 	// Create our Godot action set
 	Ref<OpenXRActionSet> action_set = OpenXRActionSet::new_action_set("godot", "Godot action set");
@@ -200,6 +204,7 @@ void OpenXRActionMap::create_default_action_sets() {
 			"/user/vive_tracker_htcx/role/keyboard");
 	Ref<OpenXRAction> aim_pose = action_set->add_new_action("aim_pose", "Aim pose", OpenXRAction::OPENXR_ACTION_POSE, "/user/hand/left,/user/hand/right");
 	Ref<OpenXRAction> grip_pose = action_set->add_new_action("grip_pose", "Grip pose", OpenXRAction::OPENXR_ACTION_POSE, "/user/hand/left,/user/hand/right");
+	Ref<OpenXRAction> palm_pose = action_set->add_new_action("palm_pose", "Palm pose", OpenXRAction::OPENXR_ACTION_POSE, "/user/hand/left,/user/hand/right");
 	Ref<OpenXRAction> haptic = action_set->add_new_action("haptic", "Haptic", OpenXRAction::OPENXR_ACTION_HAPTIC,
 			"/user/hand/left,"
 			"/user/hand/right,"
@@ -222,6 +227,7 @@ void OpenXRActionMap::create_default_action_sets() {
 	profile->add_new_binding(default_pose, "/user/hand/left/input/grip/pose,/user/hand/right/input/grip/pose");
 	profile->add_new_binding(aim_pose, "/user/hand/left/input/aim/pose,/user/hand/right/input/aim/pose");
 	profile->add_new_binding(grip_pose, "/user/hand/left/input/grip/pose,/user/hand/right/input/grip/pose");
+	profile->add_new_binding(palm_pose, "/user/hand/left/input/palm_ext/pose,/user/hand/right/input/palm_ext/pose");
 	profile->add_new_binding(menu_button, "/user/hand/left/input/menu/click,/user/hand/right/input/menu/click");
 	profile->add_new_binding(select_button, "/user/hand/left/input/select/click,/user/hand/right/input/select/click");
 	// generic has no support for triggers, grip, A/B buttons, nor joystick/trackpad inputs
@@ -233,6 +239,7 @@ void OpenXRActionMap::create_default_action_sets() {
 	profile->add_new_binding(default_pose, "/user/hand/left/input/grip/pose,/user/hand/right/input/grip/pose");
 	profile->add_new_binding(aim_pose, "/user/hand/left/input/aim/pose,/user/hand/right/input/aim/pose");
 	profile->add_new_binding(grip_pose, "/user/hand/left/input/grip/pose,/user/hand/right/input/grip/pose");
+	profile->add_new_binding(palm_pose, "/user/hand/left/input/palm_ext/pose,/user/hand/right/input/palm_ext/pose");
 	profile->add_new_binding(menu_button, "/user/hand/left/input/menu/click,/user/hand/right/input/menu/click");
 	profile->add_new_binding(select_button, "/user/hand/left/input/system/click,/user/hand/right/input/system/click");
 	// wmr controller has no a/b/x/y buttons
@@ -253,6 +260,7 @@ void OpenXRActionMap::create_default_action_sets() {
 	profile->add_new_binding(default_pose, "/user/hand/left/input/grip/pose,/user/hand/right/input/grip/pose");
 	profile->add_new_binding(aim_pose, "/user/hand/left/input/aim/pose,/user/hand/right/input/aim/pose");
 	profile->add_new_binding(grip_pose, "/user/hand/left/input/grip/pose,/user/hand/right/input/grip/pose");
+	profile->add_new_binding(palm_pose, "/user/hand/left/input/palm_ext/pose,/user/hand/right/input/palm_ext/pose");
 	// wmr controllers have no select button we can use
 	profile->add_new_binding(menu_button, "/user/hand/left/input/menu/click,/user/hand/right/input/menu/click");
 	// wmr controller has no a/b/x/y buttons
@@ -275,6 +283,7 @@ void OpenXRActionMap::create_default_action_sets() {
 	profile->add_new_binding(default_pose, "/user/hand/left/input/grip/pose,/user/hand/right/input/grip/pose");
 	profile->add_new_binding(aim_pose, "/user/hand/left/input/aim/pose,/user/hand/right/input/aim/pose");
 	profile->add_new_binding(grip_pose, "/user/hand/left/input/grip/pose,/user/hand/right/input/grip/pose");
+	profile->add_new_binding(palm_pose, "/user/hand/left/input/palm_ext/pose,/user/hand/right/input/palm_ext/pose");
 	// touch controllers have no select button we can use
 	profile->add_new_binding(menu_button, "/user/hand/left/input/menu/click,/user/hand/right/input/system/click"); // right hand system click may not be available
 	profile->add_new_binding(ax_button, "/user/hand/left/input/x/click,/user/hand/right/input/a/click"); // x on left hand, a on right hand
@@ -299,6 +308,7 @@ void OpenXRActionMap::create_default_action_sets() {
 	profile->add_new_binding(default_pose, "/user/hand/left/input/grip/pose,/user/hand/right/input/grip/pose");
 	profile->add_new_binding(aim_pose, "/user/hand/left/input/aim/pose,/user/hand/right/input/aim/pose");
 	profile->add_new_binding(grip_pose, "/user/hand/left/input/grip/pose,/user/hand/right/input/grip/pose");
+	profile->add_new_binding(palm_pose, "/user/hand/left/input/palm_ext/pose,/user/hand/right/input/palm_ext/pose");
 	// index controllers have no select button we can use
 	profile->add_new_binding(menu_button, "/user/hand/left/input/system/click,/user/hand/right/input/system/click");
 	profile->add_new_binding(ax_button, "/user/hand/left/input/a/click,/user/hand/right/input/a/click"); // a on both controllers
@@ -321,16 +331,12 @@ void OpenXRActionMap::create_default_action_sets() {
 	profile->add_new_binding(haptic, "/user/hand/left/output/haptic,/user/hand/right/output/haptic");
 	add_interaction_profile(profile);
 
-	// Note, the following profiles are all part of extensions.
-	// We include these regardless of whether the extension is active.
-	// We want our action map to be as complete as possible so our game is as portable as possible.
-	// It is very possible these will in due time become core.
-
 	// Create our HP MR controller profile
 	profile = OpenXRInteractionProfile::new_profile("/interaction_profiles/hp/mixed_reality_controller");
 	profile->add_new_binding(default_pose, "/user/hand/left/input/grip/pose,/user/hand/right/input/grip/pose");
 	profile->add_new_binding(aim_pose, "/user/hand/left/input/aim/pose,/user/hand/right/input/aim/pose");
 	profile->add_new_binding(grip_pose, "/user/hand/left/input/grip/pose,/user/hand/right/input/grip/pose");
+	profile->add_new_binding(palm_pose, "/user/hand/left/input/palm_ext/pose,/user/hand/right/input/palm_ext/pose");
 	// hpmr controllers have no select button we can use
 	profile->add_new_binding(menu_button, "/user/hand/left/input/menu/click,/user/hand/right/input/menu/click");
 	// hpmr controllers only register click, not touch, on our a/b/x/y buttons
@@ -353,6 +359,7 @@ void OpenXRActionMap::create_default_action_sets() {
 	profile->add_new_binding(default_pose, "/user/hand/left/input/grip/pose,/user/hand/right/input/grip/pose");
 	profile->add_new_binding(aim_pose, "/user/hand/left/input/aim/pose,/user/hand/right/input/aim/pose");
 	profile->add_new_binding(grip_pose, "/user/hand/left/input/grip/pose,/user/hand/right/input/grip/pose");
+	profile->add_new_binding(palm_pose, "/user/hand/left/input/palm_ext/pose,/user/hand/right/input/palm_ext/pose");
 	// Odyssey controllers have no select button we can use
 	profile->add_new_binding(menu_button, "/user/hand/left/input/menu/click,/user/hand/right/input/menu/click");
 	// Odyssey controller has no a/b/x/y buttons
@@ -375,6 +382,7 @@ void OpenXRActionMap::create_default_action_sets() {
 	profile->add_new_binding(default_pose, "/user/hand/left/input/grip/pose,/user/hand/right/input/grip/pose");
 	profile->add_new_binding(aim_pose, "/user/hand/left/input/aim/pose,/user/hand/right/input/aim/pose");
 	profile->add_new_binding(grip_pose, "/user/hand/left/input/grip/pose,/user/hand/right/input/grip/pose");
+	profile->add_new_binding(palm_pose, "/user/hand/left/input/palm_ext/pose,/user/hand/right/input/palm_ext/pose");
 	profile->add_new_binding(menu_button, "/user/hand/left/input/menu/click");
 	profile->add_new_binding(select_button, "/user/hand/left/input/system/click"); // we'll map system to select
 	profile->add_new_binding(ax_button, "/user/hand/left/input/x/click,/user/hand/right/input/a/click"); // x on left hand, a on right hand
@@ -398,6 +406,7 @@ void OpenXRActionMap::create_default_action_sets() {
 	profile->add_new_binding(default_pose, "/user/hand/left/input/grip/pose,/user/hand/right/input/grip/pose");
 	profile->add_new_binding(aim_pose, "/user/hand/left/input/aim/pose,/user/hand/right/input/aim/pose");
 	profile->add_new_binding(grip_pose, "/user/hand/left/input/grip/pose,/user/hand/right/input/grip/pose");
+	profile->add_new_binding(palm_pose, "/user/hand/left/input/palm_ext/pose,/user/hand/right/input/palm_ext/pose");
 	profile->add_new_binding(menu_button, "/user/hand/left/input/menu/click");
 	profile->add_new_binding(select_button, "/user/hand/left/input/system/click"); // we'll map system to select
 	profile->add_new_binding(ax_button, "/user/hand/left/input/x/click,/user/hand/right/input/a/click"); // x on left hand, a on right hand
@@ -421,6 +430,7 @@ void OpenXRActionMap::create_default_action_sets() {
 	profile->add_new_binding(default_pose, "/user/hand/left/input/grip/pose,/user/hand/right/input/grip/pose");
 	profile->add_new_binding(aim_pose, "/user/hand/left/input/aim/pose,/user/hand/right/input/aim/pose");
 	profile->add_new_binding(grip_pose, "/user/hand/left/input/grip/pose,/user/hand/right/input/grip/pose");
+	profile->add_new_binding(palm_pose, "/user/hand/left/input/palm_ext/pose,/user/hand/right/input/palm_ext/pose");
 	profile->add_new_binding(menu_button, "/user/hand/left/input/home/click,/user/hand/right/input/home/click");
 	profile->add_new_binding(trigger, "/user/hand/left/input/trigger/value,/user/hand/right/input/trigger/value");
 	profile->add_new_binding(trigger_click, "/user/hand/left/input/trigger/click,/user/hand/right/input/trigger/click");
diff --git a/modules/openxr/action_map/openxr_defs.cpp b/modules/openxr/action_map/openxr_defs.cpp
index 89860199be..59ce829f1b 100644
--- a/modules/openxr/action_map/openxr_defs.cpp
+++ b/modules/openxr/action_map/openxr_defs.cpp
@@ -62,6 +62,8 @@ OpenXRDefs::IOPath OpenXRDefs::simple_io_paths[] = {
 	{ "Grip pose", &OpenXRDefs::available_top_level_paths[OpenXRDefs::OPENXR_RIGHT_HAND], "/user/hand/right/input/grip/pose", OpenXRAction::OPENXR_ACTION_POSE },
 	{ "Aim pose", &OpenXRDefs::available_top_level_paths[OpenXRDefs::OPENXR_LEFT_HAND], "/user/hand/left/input/aim/pose", OpenXRAction::OPENXR_ACTION_POSE },
 	{ "Aim pose", &OpenXRDefs::available_top_level_paths[OpenXRDefs::OPENXR_RIGHT_HAND], "/user/hand/right/input/aim/pose", OpenXRAction::OPENXR_ACTION_POSE },
+	{ "Palm pose", &OpenXRDefs::available_top_level_paths[OpenXRDefs::OPENXR_LEFT_HAND], "/user/hand/left/input/palm_ext/pose", OpenXRAction::OPENXR_ACTION_POSE },
+	{ "Palm pose", &OpenXRDefs::available_top_level_paths[OpenXRDefs::OPENXR_RIGHT_HAND], "/user/hand/right/input/palm_ext/pose", OpenXRAction::OPENXR_ACTION_POSE },
 
 	{ "Menu click", &OpenXRDefs::available_top_level_paths[OpenXRDefs::OPENXR_LEFT_HAND], "/user/hand/left/input/menu/click", OpenXRAction::OPENXR_ACTION_BOOL },
 	{ "Menu click", &OpenXRDefs::available_top_level_paths[OpenXRDefs::OPENXR_RIGHT_HAND], "/user/hand/right/input/menu/click", OpenXRAction::OPENXR_ACTION_BOOL },
@@ -78,6 +80,8 @@ OpenXRDefs::IOPath OpenXRDefs::vive_io_paths[] = {
 	{ "Grip pose", &OpenXRDefs::available_top_level_paths[OpenXRDefs::OPENXR_RIGHT_HAND], "/user/hand/right/input/grip/pose", OpenXRAction::OPENXR_ACTION_POSE },
 	{ "Aim pose", &OpenXRDefs::available_top_level_paths[OpenXRDefs::OPENXR_LEFT_HAND], "/user/hand/left/input/aim/pose", OpenXRAction::OPENXR_ACTION_POSE },
 	{ "Aim pose", &OpenXRDefs::available_top_level_paths[OpenXRDefs::OPENXR_RIGHT_HAND], "/user/hand/right/input/aim/pose", OpenXRAction::OPENXR_ACTION_POSE },
+	{ "Palm pose", &OpenXRDefs::available_top_level_paths[OpenXRDefs::OPENXR_LEFT_HAND], "/user/hand/left/input/palm_ext/pose", OpenXRAction::OPENXR_ACTION_POSE },
+	{ "Palm pose", &OpenXRDefs::available_top_level_paths[OpenXRDefs::OPENXR_RIGHT_HAND], "/user/hand/right/input/palm_ext/pose", OpenXRAction::OPENXR_ACTION_POSE },
 
 	{ "Menu click", &OpenXRDefs::available_top_level_paths[OpenXRDefs::OPENXR_LEFT_HAND], "/user/hand/left/input/menu/click", OpenXRAction::OPENXR_ACTION_BOOL },
 	{ "Menu click", &OpenXRDefs::available_top_level_paths[OpenXRDefs::OPENXR_RIGHT_HAND], "/user/hand/right/input/menu/click", OpenXRAction::OPENXR_ACTION_BOOL },
@@ -109,6 +113,8 @@ OpenXRDefs::IOPath OpenXRDefs::motion_io_paths[] = {
 	{ "Grip pose", &OpenXRDefs::available_top_level_paths[OpenXRDefs::OPENXR_RIGHT_HAND], "/user/hand/right/input/grip/pose", OpenXRAction::OPENXR_ACTION_POSE },
 	{ "Aim pose", &OpenXRDefs::available_top_level_paths[OpenXRDefs::OPENXR_LEFT_HAND], "/user/hand/left/input/aim/pose", OpenXRAction::OPENXR_ACTION_POSE },
 	{ "Aim pose", &OpenXRDefs::available_top_level_paths[OpenXRDefs::OPENXR_RIGHT_HAND], "/user/hand/right/input/aim/pose", OpenXRAction::OPENXR_ACTION_POSE },
+	{ "Palm pose", &OpenXRDefs::available_top_level_paths[OpenXRDefs::OPENXR_LEFT_HAND], "/user/hand/left/input/palm_ext/pose", OpenXRAction::OPENXR_ACTION_POSE },
+	{ "Palm pose", &OpenXRDefs::available_top_level_paths[OpenXRDefs::OPENXR_RIGHT_HAND], "/user/hand/right/input/palm_ext/pose", OpenXRAction::OPENXR_ACTION_POSE },
 
 	{ "Menu click", &OpenXRDefs::available_top_level_paths[OpenXRDefs::OPENXR_LEFT_HAND], "/user/hand/left/input/menu/click", OpenXRAction::OPENXR_ACTION_BOOL },
 	{ "Menu click", &OpenXRDefs::available_top_level_paths[OpenXRDefs::OPENXR_RIGHT_HAND], "/user/hand/right/input/menu/click", OpenXRAction::OPENXR_ACTION_BOOL },
@@ -143,6 +149,8 @@ OpenXRDefs::IOPath OpenXRDefs::hpmr_io_paths[] = {
 	{ "Grip pose", &OpenXRDefs::available_top_level_paths[OpenXRDefs::OPENXR_RIGHT_HAND], "/user/hand/right/input/grip/pose", OpenXRAction::OPENXR_ACTION_POSE },
 	{ "Aim pose", &OpenXRDefs::available_top_level_paths[OpenXRDefs::OPENXR_LEFT_HAND], "/user/hand/left/input/aim/pose", OpenXRAction::OPENXR_ACTION_POSE },
 	{ "Aim pose", &OpenXRDefs::available_top_level_paths[OpenXRDefs::OPENXR_RIGHT_HAND], "/user/hand/right/input/aim/pose", OpenXRAction::OPENXR_ACTION_POSE },
+	{ "Palm pose", &OpenXRDefs::available_top_level_paths[OpenXRDefs::OPENXR_LEFT_HAND], "/user/hand/left/input/palm_ext/pose", OpenXRAction::OPENXR_ACTION_POSE },
+	{ "Palm pose", &OpenXRDefs::available_top_level_paths[OpenXRDefs::OPENXR_RIGHT_HAND], "/user/hand/right/input/palm_ext/pose", OpenXRAction::OPENXR_ACTION_POSE },
 
 	{ "Menu click", &OpenXRDefs::available_top_level_paths[OpenXRDefs::OPENXR_LEFT_HAND], "/user/hand/left/input/menu/click", OpenXRAction::OPENXR_ACTION_BOOL },
 	{ "Menu click", &OpenXRDefs::available_top_level_paths[OpenXRDefs::OPENXR_RIGHT_HAND], "/user/hand/right/input/menu/click", OpenXRAction::OPENXR_ACTION_BOOL },
@@ -175,6 +183,8 @@ OpenXRDefs::IOPath OpenXRDefs::touch_io_paths[] = {
 	{ "Grip pose", &OpenXRDefs::available_top_level_paths[OpenXRDefs::OPENXR_RIGHT_HAND], "/user/hand/right/input/grip/pose", OpenXRAction::OPENXR_ACTION_POSE },
 	{ "Aim pose", &OpenXRDefs::available_top_level_paths[OpenXRDefs::OPENXR_LEFT_HAND], "/user/hand/left/input/aim/pose", OpenXRAction::OPENXR_ACTION_POSE },
 	{ "Aim pose", &OpenXRDefs::available_top_level_paths[OpenXRDefs::OPENXR_RIGHT_HAND], "/user/hand/right/input/aim/pose", OpenXRAction::OPENXR_ACTION_POSE },
+	{ "Palm pose", &OpenXRDefs::available_top_level_paths[OpenXRDefs::OPENXR_LEFT_HAND], "/user/hand/left/input/palm_ext/pose", OpenXRAction::OPENXR_ACTION_POSE },
+	{ "Palm pose", &OpenXRDefs::available_top_level_paths[OpenXRDefs::OPENXR_RIGHT_HAND], "/user/hand/right/input/palm_ext/pose", OpenXRAction::OPENXR_ACTION_POSE },
 
 	{ "Menu click", &OpenXRDefs::available_top_level_paths[OpenXRDefs::OPENXR_LEFT_HAND], "/user/hand/left/input/menu/click", OpenXRAction::OPENXR_ACTION_BOOL },
 	{ "System click", &OpenXRDefs::available_top_level_paths[OpenXRDefs::OPENXR_RIGHT_HAND], "/user/hand/right/input/system/click", OpenXRAction::OPENXR_ACTION_BOOL },
@@ -213,6 +223,8 @@ OpenXRDefs::IOPath OpenXRDefs::index_io_paths[] = {
 	{ "Grip pose", &OpenXRDefs::available_top_level_paths[OpenXRDefs::OPENXR_RIGHT_HAND], "/user/hand/right/input/grip/pose", OpenXRAction::OPENXR_ACTION_POSE },
 	{ "Aim pose", &OpenXRDefs::available_top_level_paths[OpenXRDefs::OPENXR_LEFT_HAND], "/user/hand/left/input/aim/pose", OpenXRAction::OPENXR_ACTION_POSE },
 	{ "Aim pose", &OpenXRDefs::available_top_level_paths[OpenXRDefs::OPENXR_RIGHT_HAND], "/user/hand/right/input/aim/pose", OpenXRAction::OPENXR_ACTION_POSE },
+	{ "Palm pose", &OpenXRDefs::available_top_level_paths[OpenXRDefs::OPENXR_LEFT_HAND], "/user/hand/left/input/palm_ext/pose", OpenXRAction::OPENXR_ACTION_POSE },
+	{ "Palm pose", &OpenXRDefs::available_top_level_paths[OpenXRDefs::OPENXR_RIGHT_HAND], "/user/hand/right/input/palm_ext/pose", OpenXRAction::OPENXR_ACTION_POSE },
 
 	{ "System click", &OpenXRDefs::available_top_level_paths[OpenXRDefs::OPENXR_LEFT_HAND], "/user/hand/left/input/system/click", OpenXRAction::OPENXR_ACTION_BOOL },
 	{ "System click", &OpenXRDefs::available_top_level_paths[OpenXRDefs::OPENXR_RIGHT_HAND], "/user/hand/right/input/system/click", OpenXRAction::OPENXR_ACTION_BOOL },
@@ -260,6 +272,8 @@ OpenXRDefs::IOPath OpenXRDefs::odyssey_io_paths[] = {
 	{ "Grip pose", &OpenXRDefs::available_top_level_paths[OpenXRDefs::OPENXR_RIGHT_HAND], "/user/hand/right/input/grip/pose", OpenXRAction::OPENXR_ACTION_POSE },
 	{ "Aim pose", &OpenXRDefs::available_top_level_paths[OpenXRDefs::OPENXR_LEFT_HAND], "/user/hand/left/input/aim/pose", OpenXRAction::OPENXR_ACTION_POSE },
 	{ "Aim pose", &OpenXRDefs::available_top_level_paths[OpenXRDefs::OPENXR_RIGHT_HAND], "/user/hand/right/input/aim/pose", OpenXRAction::OPENXR_ACTION_POSE },
+	{ "Palm pose", &OpenXRDefs::available_top_level_paths[OpenXRDefs::OPENXR_LEFT_HAND], "/user/hand/left/input/palm_ext/pose", OpenXRAction::OPENXR_ACTION_POSE },
+	{ "Palm pose", &OpenXRDefs::available_top_level_paths[OpenXRDefs::OPENXR_RIGHT_HAND], "/user/hand/right/input/palm_ext/pose", OpenXRAction::OPENXR_ACTION_POSE },
 
 	{ "Menu click", &OpenXRDefs::available_top_level_paths[OpenXRDefs::OPENXR_LEFT_HAND], "/user/hand/left/input/menu/click", OpenXRAction::OPENXR_ACTION_BOOL },
 	{ "Menu click", &OpenXRDefs::available_top_level_paths[OpenXRDefs::OPENXR_RIGHT_HAND], "/user/hand/right/input/menu/click", OpenXRAction::OPENXR_ACTION_BOOL },
@@ -294,6 +308,8 @@ OpenXRDefs::IOPath OpenXRDefs::vive_cosmos_paths[] = {
 	{ "Grip pose", &OpenXRDefs::available_top_level_paths[OpenXRDefs::OPENXR_RIGHT_HAND], "/user/hand/right/input/grip/pose", OpenXRAction::OPENXR_ACTION_POSE },
 	{ "Aim pose", &OpenXRDefs::available_top_level_paths[OpenXRDefs::OPENXR_LEFT_HAND], "/user/hand/left/input/aim/pose", OpenXRAction::OPENXR_ACTION_POSE },
 	{ "Aim pose", &OpenXRDefs::available_top_level_paths[OpenXRDefs::OPENXR_RIGHT_HAND], "/user/hand/right/input/aim/pose", OpenXRAction::OPENXR_ACTION_POSE },
+	{ "Palm pose", &OpenXRDefs::available_top_level_paths[OpenXRDefs::OPENXR_LEFT_HAND], "/user/hand/left/input/palm_ext/pose", OpenXRAction::OPENXR_ACTION_POSE },
+	{ "Palm pose", &OpenXRDefs::available_top_level_paths[OpenXRDefs::OPENXR_RIGHT_HAND], "/user/hand/right/input/palm_ext/pose", OpenXRAction::OPENXR_ACTION_POSE },
 
 	{ "Menu click", &OpenXRDefs::available_top_level_paths[OpenXRDefs::OPENXR_LEFT_HAND], "/user/hand/left/input/menu/click", OpenXRAction::OPENXR_ACTION_BOOL },
 	{ "System click", &OpenXRDefs::available_top_level_paths[OpenXRDefs::OPENXR_RIGHT_HAND], "/user/hand/right/input/system/click", OpenXRAction::OPENXR_ACTION_BOOL },
@@ -331,6 +347,8 @@ OpenXRDefs::IOPath OpenXRDefs::vive_focus3_paths[] = {
 	{ "Grip pose", &OpenXRDefs::available_top_level_paths[OpenXRDefs::OPENXR_RIGHT_HAND], "/user/hand/right/input/grip/pose", OpenXRAction::OPENXR_ACTION_POSE },
 	{ "Aim pose", &OpenXRDefs::available_top_level_paths[OpenXRDefs::OPENXR_LEFT_HAND], "/user/hand/left/input/aim/pose", OpenXRAction::OPENXR_ACTION_POSE },
 	{ "Aim pose", &OpenXRDefs::available_top_level_paths[OpenXRDefs::OPENXR_RIGHT_HAND], "/user/hand/right/input/aim/pose", OpenXRAction::OPENXR_ACTION_POSE },
+	{ "Palm pose", &OpenXRDefs::available_top_level_paths[OpenXRDefs::OPENXR_LEFT_HAND], "/user/hand/left/input/palm_ext/pose", OpenXRAction::OPENXR_ACTION_POSE },
+	{ "Palm pose", &OpenXRDefs::available_top_level_paths[OpenXRDefs::OPENXR_RIGHT_HAND], "/user/hand/right/input/palm_ext/pose", OpenXRAction::OPENXR_ACTION_POSE },
 
 	{ "Menu click", &OpenXRDefs::available_top_level_paths[OpenXRDefs::OPENXR_LEFT_HAND], "/user/hand/left/input/menu/click", OpenXRAction::OPENXR_ACTION_BOOL },
 	{ "System click", &OpenXRDefs::available_top_level_paths[OpenXRDefs::OPENXR_RIGHT_HAND], "/user/hand/right/input/system/click", OpenXRAction::OPENXR_ACTION_BOOL },
@@ -371,6 +389,8 @@ OpenXRDefs::IOPath OpenXRDefs::huawei_controller_paths[] = {
 	{ "Grip pose", &OpenXRDefs::available_top_level_paths[OpenXRDefs::OPENXR_RIGHT_HAND], "/user/hand/right/input/grip/pose", OpenXRAction::OPENXR_ACTION_POSE },
 	{ "Aim pose", &OpenXRDefs::available_top_level_paths[OpenXRDefs::OPENXR_LEFT_HAND], "/user/hand/left/input/aim/pose", OpenXRAction::OPENXR_ACTION_POSE },
 	{ "Aim pose", &OpenXRDefs::available_top_level_paths[OpenXRDefs::OPENXR_RIGHT_HAND], "/user/hand/right/input/aim/pose", OpenXRAction::OPENXR_ACTION_POSE },
+	{ "Palm pose", &OpenXRDefs::available_top_level_paths[OpenXRDefs::OPENXR_LEFT_HAND], "/user/hand/left/input/palm_ext/pose", OpenXRAction::OPENXR_ACTION_POSE },
+	{ "Palm pose", &OpenXRDefs::available_top_level_paths[OpenXRDefs::OPENXR_RIGHT_HAND], "/user/hand/right/input/palm_ext/pose", OpenXRAction::OPENXR_ACTION_POSE },
 
 	{ "Home click", &OpenXRDefs::available_top_level_paths[OpenXRDefs::OPENXR_LEFT_HAND], "/user/hand/left/input/home/click", OpenXRAction::OPENXR_ACTION_BOOL },
 	{ "Home click", &OpenXRDefs::available_top_level_paths[OpenXRDefs::OPENXR_RIGHT_HAND], "/user/hand/right/input/home/click", OpenXRAction::OPENXR_ACTION_BOOL },
diff --git a/modules/openxr/extensions/openxr_extension_wrapper.h b/modules/openxr/extensions/openxr_extension_wrapper.h
index ecc6e0dd4e..52c84decf8 100644
--- a/modules/openxr/extensions/openxr_extension_wrapper.h
+++ b/modules/openxr/extensions/openxr_extension_wrapper.h
@@ -87,6 +87,11 @@ public:
 		return false;
 	}
 
+	// Return false if this extension is responsible for this path but the path is not enabled
+	virtual bool is_path_supported(const String &p_path) {
+		return true;
+	}
+
 	OpenXRExtensionWrapper(OpenXRAPI *p_openxr_api) { openxr_api = p_openxr_api; };
 	virtual ~OpenXRExtensionWrapper() = default;
 };
diff --git a/modules/openxr/extensions/openxr_htc_vive_tracker_extension.cpp b/modules/openxr/extensions/openxr_htc_vive_tracker_extension.cpp
index 302acf4e30..88cc7c061c 100644
--- a/modules/openxr/extensions/openxr_htc_vive_tracker_extension.cpp
+++ b/modules/openxr/extensions/openxr_htc_vive_tracker_extension.cpp
@@ -65,3 +65,12 @@ bool OpenXRHTCViveTrackerExtension::on_event_polled(const XrEventDataBuffer &eve
 		} break;
 	}
 }
+
+bool OpenXRHTCViveTrackerExtension::is_path_supported(const String &p_path) {
+	if (p_path == "/interaction_profiles/htc/vive_tracker_htcx") {
+		return available;
+	}
+
+	// Not a path under this extensions control, so we return true;
+	return true;
+}
diff --git a/modules/openxr/extensions/openxr_htc_vive_tracker_extension.h b/modules/openxr/extensions/openxr_htc_vive_tracker_extension.h
index 7f37351f27..ab8e8535f1 100644
--- a/modules/openxr/extensions/openxr_htc_vive_tracker_extension.h
+++ b/modules/openxr/extensions/openxr_htc_vive_tracker_extension.h
@@ -41,7 +41,9 @@ public:
 	virtual ~OpenXRHTCViveTrackerExtension() override;
 
 	bool is_available();
+
 	virtual bool on_event_polled(const XrEventDataBuffer &event) override;
+	virtual bool is_path_supported(const String &p_path) override;
 
 private:
 	static OpenXRHTCViveTrackerExtension *singleton;
diff --git a/modules/openxr/extensions/openxr_palm_pose_extension.cpp b/modules/openxr/extensions/openxr_palm_pose_extension.cpp
new file mode 100644
index 0000000000..fd3b8f50fe
--- /dev/null
+++ b/modules/openxr/extensions/openxr_palm_pose_extension.cpp
@@ -0,0 +1,66 @@
+/*************************************************************************/
+/*  openxr_palm_pose_extension.cpp                                       */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md).   */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+
+#include "openxr_palm_pose_extension.h"
+#include "core/string/print_string.h"
+
+OpenXRPalmPoseExtension *OpenXRPalmPoseExtension::singleton = nullptr;
+
+OpenXRPalmPoseExtension *OpenXRPalmPoseExtension::get_singleton() {
+	return singleton;
+}
+
+OpenXRPalmPoseExtension::OpenXRPalmPoseExtension(OpenXRAPI *p_openxr_api) :
+		OpenXRExtensionWrapper(p_openxr_api) {
+	singleton = this;
+
+	request_extensions[XR_EXT_PALM_POSE_EXTENSION_NAME] = &available;
+}
+
+OpenXRPalmPoseExtension::~OpenXRPalmPoseExtension() {
+	singleton = nullptr;
+}
+
+bool OpenXRPalmPoseExtension::is_available() {
+	return available;
+}
+
+bool OpenXRPalmPoseExtension::is_path_supported(const String &p_path) {
+	if (p_path == "/user/hand/left/input/palm_ext/pose") {
+		return available;
+	}
+
+	if (p_path == "/user/hand/right/input/palm_ext/pose") {
+		return available;
+	}
+
+	// Not a path under this extensions control, so we return true;
+	return true;
+}
diff --git a/modules/openxr/extensions/openxr_palm_pose_extension.h b/modules/openxr/extensions/openxr_palm_pose_extension.h
new file mode 100644
index 0000000000..a7ef83c5d5
--- /dev/null
+++ b/modules/openxr/extensions/openxr_palm_pose_extension.h
@@ -0,0 +1,53 @@
+/*************************************************************************/
+/*  openxr_palm_pose_extension.h                                         */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md).   */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+
+#ifndef OPENXR_PALM_POSE_EXTENSION_H
+#define OPENXR_PALM_POSE_EXTENSION_H
+
+#include "openxr_extension_wrapper.h"
+
+class OpenXRPalmPoseExtension : public OpenXRExtensionWrapper {
+public:
+	static OpenXRPalmPoseExtension *get_singleton();
+
+	OpenXRPalmPoseExtension(OpenXRAPI *p_openxr_api);
+	virtual ~OpenXRPalmPoseExtension() override;
+
+	bool is_available();
+
+	virtual bool is_path_supported(const String &p_path) override;
+
+private:
+	static OpenXRPalmPoseExtension *singleton;
+
+	bool available = false;
+};
+
+#endif // OPENXR_PALM_POSE_EXTENSION_H
diff --git a/modules/openxr/openxr_api.cpp b/modules/openxr/openxr_api.cpp
index 94095eb61c..511d111aaf 100644
--- a/modules/openxr/openxr_api.cpp
+++ b/modules/openxr/openxr_api.cpp
@@ -49,6 +49,7 @@
 #endif
 
 #include "extensions/openxr_htc_vive_tracker_extension.h"
+#include "extensions/openxr_palm_pose_extension.h"
 
 #include "modules/openxr/openxr_interface.h"
 
@@ -184,6 +185,20 @@ bool OpenXRAPI::is_extension_supported(const String &p_extension) const {
 	return false;
 }
 
+bool OpenXRAPI::is_path_supported(const String &p_path) {
+	// This checks with extensions whether a path is *unsupported* and returns false if this is so.
+	// This allows us to filter out paths that are only available if related extensions are supported.
+	// WARNING: This method will return true for unknown/mistyped paths as we have no way to validate those.
+
+	for (OpenXRExtensionWrapper *wrapper : registered_extension_wrappers) {
+		if (!wrapper->is_path_supported(p_path)) {
+			return false;
+		}
+	}
+
+	return true;
+}
+
 void OpenXRAPI::copy_string_to_char_buffer(const String p_string, char *p_buffer, int p_buffer_len) {
 	CharString char_string = p_string.utf8();
 	int len = char_string.length();
@@ -1382,6 +1397,10 @@ void OpenXRAPI::pre_render() {
 	// 2) It will use the previous timing to pause our thread so that rendering starts as close to displaying as possible
 	// This must thus be called as close to when we start rendering as possible
 	XrFrameWaitInfo frame_wait_info = { XR_TYPE_FRAME_WAIT_INFO, nullptr };
+	frame_state.predictedDisplayTime = 0;
+	frame_state.predictedDisplayPeriod = 0;
+	frame_state.shouldRender = false;
+
 	XrResult result = xrWaitFrame(session, &frame_wait_info, &frame_state);
 	if (XR_FAILED(result)) {
 		print_line("OpenXR: xrWaitFrame() was not successful [", get_error_string(result), "]");
@@ -1643,6 +1662,7 @@ OpenXRAPI::OpenXRAPI() {
 #endif
 
 	// register our other extensions
+	register_extension_wrapper(memnew(OpenXRPalmPoseExtension(this)));
 	register_extension_wrapper(memnew(OpenXRHTCViveTrackerExtension(this)));
 }
 
@@ -2063,6 +2083,11 @@ XrPath OpenXRAPI::get_interaction_profile_path(RID p_interaction_profile) {
 }
 
 RID OpenXRAPI::interaction_profile_create(const String p_name) {
+	if (!is_path_supported(p_name)) {
+		// The extension enabling this path must not be active, we will silently skip this interaction profile
+		return RID();
+	}
+
 	InteractionProfile new_interaction_profile;
 
 	XrResult result = xrStringToPath(instance, p_name.utf8().get_data(), &new_interaction_profile.path);
@@ -2099,6 +2124,11 @@ void OpenXRAPI::interaction_profile_clear_bindings(RID p_interaction_profile) {
 }
 
 bool OpenXRAPI::interaction_profile_add_binding(RID p_interaction_profile, RID p_action, const String p_path) {
+	if (!is_path_supported(p_path)) {
+		// The extension enabling this path must not be active, we will silently skip this binding
+		return false;
+	}
+
 	InteractionProfile *ip = interaction_profile_owner.get_or_null(p_interaction_profile);
 	ERR_FAIL_NULL_V(ip, false);
 
diff --git a/modules/openxr/openxr_api.h b/modules/openxr/openxr_api.h
index dc224c4237..e541e921ab 100644
--- a/modules/openxr/openxr_api.h
+++ b/modules/openxr/openxr_api.h
@@ -81,6 +81,8 @@ private:
 	bool ext_vive_focus3_available = false;
 	bool ext_huawei_controller_available = false;
 
+	bool is_path_supported(const String &p_path);
+
 	// composition layer providers
 	Vector<OpenXRCompositionLayerProvider *> composition_layer_providers;
 
diff --git a/modules/openxr/openxr_interface.cpp b/modules/openxr/openxr_interface.cpp
index 6c2f08e21d..c5eda88db8 100644
--- a/modules/openxr/openxr_interface.cpp
+++ b/modules/openxr/openxr_interface.cpp
@@ -176,33 +176,35 @@ void OpenXRInterface::_load_action_map() {
 
 			// Note, we can only have one entry per interaction profile so if it already exists we clear it out
 			RID ip = openxr_api->interaction_profile_create(xr_interaction_profile->get_interaction_profile_path());
-			openxr_api->interaction_profile_clear_bindings(ip);
-
-			Array xr_bindings = xr_interaction_profile->get_bindings();
-			for (int j = 0; j < xr_bindings.size(); j++) {
-				Ref<OpenXRIPBinding> xr_binding = xr_bindings[j];
-				Ref<OpenXRAction> xr_action = xr_binding->get_action();
-
-				Action *action = nullptr;
-				if (xr_actions.has(xr_action)) {
-					action = xr_actions[xr_action];
-				} else {
-					print_line("Action ", xr_action->get_name(), " isn't part of an action set!");
-					continue;
-				}
+			if (ip.is_valid()) {
+				openxr_api->interaction_profile_clear_bindings(ip);
+
+				Array xr_bindings = xr_interaction_profile->get_bindings();
+				for (int j = 0; j < xr_bindings.size(); j++) {
+					Ref<OpenXRIPBinding> xr_binding = xr_bindings[j];
+					Ref<OpenXRAction> xr_action = xr_binding->get_action();
+
+					Action *action = nullptr;
+					if (xr_actions.has(xr_action)) {
+						action = xr_actions[xr_action];
+					} else {
+						print_line("Action ", xr_action->get_name(), " isn't part of an action set!");
+						continue;
+					}
 
-				PackedStringArray paths = xr_binding->get_paths();
-				for (int k = 0; k < paths.size(); k++) {
-					openxr_api->interaction_profile_add_binding(ip, action->action_rid, paths[k]);
+					PackedStringArray paths = xr_binding->get_paths();
+					for (int k = 0; k < paths.size(); k++) {
+						openxr_api->interaction_profile_add_binding(ip, action->action_rid, paths[k]);
+					}
 				}
-			}
 
-			// Now submit our suggestions
-			openxr_api->interaction_profile_suggest_bindings(ip);
+				// Now submit our suggestions
+				openxr_api->interaction_profile_suggest_bindings(ip);
 
-			// And record it in our array so we can clean it up later on
-			if (interaction_profiles.has(ip)) {
-				interaction_profiles.push_back(ip);
+				// And record it in our array so we can clean it up later on
+				if (interaction_profiles.has(ip)) {
+					interaction_profiles.push_back(ip);
+				}
 			}
 		}
 	}