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godot/modules/openxr/openxr_interface.cpp

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/**************************************************************************/
/* openxr_interface.cpp */
/**************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/**************************************************************************/
/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */
/* */
/* 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_interface.h"
#include "core/io/resource_loader.h"
#include "core/io/resource_saver.h"
#include "servers/rendering/rendering_server_globals.h"
#include "extensions/openxr_eye_gaze_interaction.h"
#include "extensions/openxr_hand_interaction_extension.h"
#include "thirdparty/openxr/include/openxr/openxr.h"
void OpenXRInterface::_bind_methods() {
// lifecycle signals
ADD_SIGNAL(MethodInfo("session_begun"));
ADD_SIGNAL(MethodInfo("session_stopping"));
ADD_SIGNAL(MethodInfo("session_focussed"));
ADD_SIGNAL(MethodInfo("session_visible"));
ADD_SIGNAL(MethodInfo("session_loss_pending"));
ADD_SIGNAL(MethodInfo("instance_exiting"));
ADD_SIGNAL(MethodInfo("pose_recentered"));
ADD_SIGNAL(MethodInfo("refresh_rate_changed", PropertyInfo(Variant::FLOAT, "refresh_rate")));
// Display refresh rate
ClassDB::bind_method(D_METHOD("get_display_refresh_rate"), &OpenXRInterface::get_display_refresh_rate);
ClassDB::bind_method(D_METHOD("set_display_refresh_rate", "refresh_rate"), &OpenXRInterface::set_display_refresh_rate);
ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "display_refresh_rate"), "set_display_refresh_rate", "get_display_refresh_rate");
// Render Target size multiplier
ClassDB::bind_method(D_METHOD("get_render_target_size_multiplier"), &OpenXRInterface::get_render_target_size_multiplier);
ClassDB::bind_method(D_METHOD("set_render_target_size_multiplier", "multiplier"), &OpenXRInterface::set_render_target_size_multiplier);
ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "render_target_size_multiplier"), "set_render_target_size_multiplier", "get_render_target_size_multiplier");
// Foveation level
ClassDB::bind_method(D_METHOD("is_foveation_supported"), &OpenXRInterface::is_foveation_supported);
ClassDB::bind_method(D_METHOD("get_foveation_level"), &OpenXRInterface::get_foveation_level);
ClassDB::bind_method(D_METHOD("set_foveation_level", "foveation_level"), &OpenXRInterface::set_foveation_level);
ADD_PROPERTY(PropertyInfo(Variant::INT, "foveation_level"), "set_foveation_level", "get_foveation_level");
ClassDB::bind_method(D_METHOD("get_foveation_dynamic"), &OpenXRInterface::get_foveation_dynamic);
ClassDB::bind_method(D_METHOD("set_foveation_dynamic", "foveation_dynamic"), &OpenXRInterface::set_foveation_dynamic);
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "foveation_dynamic"), "set_foveation_dynamic", "get_foveation_dynamic");
// Action sets
ClassDB::bind_method(D_METHOD("is_action_set_active", "name"), &OpenXRInterface::is_action_set_active);
ClassDB::bind_method(D_METHOD("set_action_set_active", "name", "active"), &OpenXRInterface::set_action_set_active);
ClassDB::bind_method(D_METHOD("get_action_sets"), &OpenXRInterface::get_action_sets);
// Refresh rates
ClassDB::bind_method(D_METHOD("get_available_display_refresh_rates"), &OpenXRInterface::get_available_display_refresh_rates);
// Hand tracking.
ClassDB::bind_method(D_METHOD("set_motion_range", "hand", "motion_range"), &OpenXRInterface::set_motion_range);
ClassDB::bind_method(D_METHOD("get_motion_range", "hand"), &OpenXRInterface::get_motion_range);
ClassDB::bind_method(D_METHOD("get_hand_tracking_source", "hand"), &OpenXRInterface::get_hand_tracking_source);
ClassDB::bind_method(D_METHOD("get_hand_joint_flags", "hand", "joint"), &OpenXRInterface::get_hand_joint_flags);
ClassDB::bind_method(D_METHOD("get_hand_joint_rotation", "hand", "joint"), &OpenXRInterface::get_hand_joint_rotation);
ClassDB::bind_method(D_METHOD("get_hand_joint_position", "hand", "joint"), &OpenXRInterface::get_hand_joint_position);
ClassDB::bind_method(D_METHOD("get_hand_joint_radius", "hand", "joint"), &OpenXRInterface::get_hand_joint_radius);
ClassDB::bind_method(D_METHOD("get_hand_joint_linear_velocity", "hand", "joint"), &OpenXRInterface::get_hand_joint_linear_velocity);
ClassDB::bind_method(D_METHOD("get_hand_joint_angular_velocity", "hand", "joint"), &OpenXRInterface::get_hand_joint_angular_velocity);
ClassDB::bind_method(D_METHOD("is_hand_tracking_supported"), &OpenXRInterface::is_hand_tracking_supported);
ClassDB::bind_method(D_METHOD("is_hand_interaction_supported"), &OpenXRInterface::is_hand_interaction_supported);
ClassDB::bind_method(D_METHOD("is_eye_gaze_interaction_supported"), &OpenXRInterface::is_eye_gaze_interaction_supported);
// VRS
ClassDB::bind_method(D_METHOD("get_vrs_min_radius"), &OpenXRInterface::get_vrs_min_radius);
ClassDB::bind_method(D_METHOD("set_vrs_min_radius", "radius"), &OpenXRInterface::set_vrs_min_radius);
ClassDB::bind_method(D_METHOD("get_vrs_strength"), &OpenXRInterface::get_vrs_strength);
ClassDB::bind_method(D_METHOD("set_vrs_strength", "strength"), &OpenXRInterface::set_vrs_strength);
ADD_GROUP("Vulkan VRS", "vrs_");
ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "vrs_min_radius", PROPERTY_HINT_RANGE, "1.0,100.0,1.0"), "set_vrs_min_radius", "get_vrs_min_radius");
ADD_PROPERTY(PropertyInfo(Variant::FLOAT, "vrs_strength", PROPERTY_HINT_RANGE, "0.1,10.0,0.1"), "set_vrs_strength", "get_vrs_strength");
BIND_ENUM_CONSTANT(HAND_LEFT);
BIND_ENUM_CONSTANT(HAND_RIGHT);
BIND_ENUM_CONSTANT(HAND_MAX);
BIND_ENUM_CONSTANT(HAND_MOTION_RANGE_UNOBSTRUCTED);
BIND_ENUM_CONSTANT(HAND_MOTION_RANGE_CONFORM_TO_CONTROLLER);
BIND_ENUM_CONSTANT(HAND_MOTION_RANGE_MAX);
BIND_ENUM_CONSTANT(HAND_TRACKED_SOURCE_UNKNOWN);
BIND_ENUM_CONSTANT(HAND_TRACKED_SOURCE_UNOBSTRUCTED);
BIND_ENUM_CONSTANT(HAND_TRACKED_SOURCE_CONTROLLER);
BIND_ENUM_CONSTANT(HAND_TRACKED_SOURCE_MAX);
BIND_ENUM_CONSTANT(HAND_JOINT_PALM);
BIND_ENUM_CONSTANT(HAND_JOINT_WRIST);
BIND_ENUM_CONSTANT(HAND_JOINT_THUMB_METACARPAL);
BIND_ENUM_CONSTANT(HAND_JOINT_THUMB_PROXIMAL);
BIND_ENUM_CONSTANT(HAND_JOINT_THUMB_DISTAL);
BIND_ENUM_CONSTANT(HAND_JOINT_THUMB_TIP);
BIND_ENUM_CONSTANT(HAND_JOINT_INDEX_METACARPAL);
BIND_ENUM_CONSTANT(HAND_JOINT_INDEX_PROXIMAL);
BIND_ENUM_CONSTANT(HAND_JOINT_INDEX_INTERMEDIATE);
BIND_ENUM_CONSTANT(HAND_JOINT_INDEX_DISTAL);
BIND_ENUM_CONSTANT(HAND_JOINT_INDEX_TIP);
BIND_ENUM_CONSTANT(HAND_JOINT_MIDDLE_METACARPAL);
BIND_ENUM_CONSTANT(HAND_JOINT_MIDDLE_PROXIMAL);
BIND_ENUM_CONSTANT(HAND_JOINT_MIDDLE_INTERMEDIATE);
BIND_ENUM_CONSTANT(HAND_JOINT_MIDDLE_DISTAL);
BIND_ENUM_CONSTANT(HAND_JOINT_MIDDLE_TIP);
BIND_ENUM_CONSTANT(HAND_JOINT_RING_METACARPAL);
BIND_ENUM_CONSTANT(HAND_JOINT_RING_PROXIMAL);
BIND_ENUM_CONSTANT(HAND_JOINT_RING_INTERMEDIATE);
BIND_ENUM_CONSTANT(HAND_JOINT_RING_DISTAL);
BIND_ENUM_CONSTANT(HAND_JOINT_RING_TIP);
BIND_ENUM_CONSTANT(HAND_JOINT_LITTLE_METACARPAL);
BIND_ENUM_CONSTANT(HAND_JOINT_LITTLE_PROXIMAL);
BIND_ENUM_CONSTANT(HAND_JOINT_LITTLE_INTERMEDIATE);
BIND_ENUM_CONSTANT(HAND_JOINT_LITTLE_DISTAL);
BIND_ENUM_CONSTANT(HAND_JOINT_LITTLE_TIP);
BIND_ENUM_CONSTANT(HAND_JOINT_MAX);
BIND_BITFIELD_FLAG(HAND_JOINT_NONE);
BIND_BITFIELD_FLAG(HAND_JOINT_ORIENTATION_VALID);
BIND_BITFIELD_FLAG(HAND_JOINT_ORIENTATION_TRACKED);
BIND_BITFIELD_FLAG(HAND_JOINT_POSITION_VALID);
BIND_BITFIELD_FLAG(HAND_JOINT_POSITION_TRACKED);
BIND_BITFIELD_FLAG(HAND_JOINT_LINEAR_VELOCITY_VALID);
BIND_BITFIELD_FLAG(HAND_JOINT_ANGULAR_VELOCITY_VALID);
}
StringName OpenXRInterface::get_name() const {
return StringName("OpenXR");
};
uint32_t OpenXRInterface::get_capabilities() const {
return XRInterface::XR_VR + XRInterface::XR_STEREO;
};
PackedStringArray OpenXRInterface::get_suggested_tracker_names() const {
// These are hardcoded in OpenXR, note that they will only be available if added to our action map
PackedStringArray arr = {
"head", // XRPositionalTracker for the users head (Mapped from OpenXR /user/head)
"left_hand", // XRControllerTracker for the users left hand (Mapped from OpenXR /user/hand/left)
"right_hand", // XRControllerTracker for the users right hand (Mapped from OpenXR /user/hand/right)
"/user/hand_tracker/left", // XRHandTracker for the users left hand
"/user/hand_tracker/right", // XRHandTracker for the users right hand
"/user/body_tracker", // XRBodyTracker for the users body
"/user/face_tracker", // XRFaceTracker for the users face
"/user/treadmill"
};
for (OpenXRExtensionWrapper *wrapper : OpenXRAPI::get_singleton()->get_registered_extension_wrappers()) {
arr.append_array(wrapper->get_suggested_tracker_names());
}
return arr;
}
XRInterface::TrackingStatus OpenXRInterface::get_tracking_status() const {
return tracking_state;
}
void OpenXRInterface::_load_action_map() {
ERR_FAIL_NULL(openxr_api);
// This may seem a bit duplicitous to a little bit of background info here.
// OpenXRActionMap (with all its sub resource classes) is a class that allows us to configure and store an action map in.
// This gives the user the ability to edit the action map in a UI and customize the actions.
// OpenXR however requires us to submit an action map and it takes over from that point and we can no longer change it.
// This system does that push and we store the info needed to then work with this action map going forward.
// Within our openxr device we maintain a number of classes that wrap the relevant OpenXR objects for this.
// Within OpenXRInterface we have a few internal classes that keep track of what we've created.
// This allow us to process the relevant actions each frame.
// just in case clean up
free_trackers();
free_interaction_profiles();
free_action_sets();
Ref<OpenXRActionMap> action_map;
if (Engine::get_singleton()->is_editor_hint()) {
#ifdef TOOLS_ENABLED
action_map.instantiate();
action_map->create_editor_action_sets();
#endif
} else {
String default_tres_name = openxr_api->get_default_action_map_resource_name();
// Check if we can load our default
if (ResourceLoader::exists(default_tres_name)) {
action_map = ResourceLoader::load(default_tres_name);
}
// Check if we need to create default action set
if (action_map.is_null()) {
action_map.instantiate();
action_map->create_default_action_sets();
#ifdef TOOLS_ENABLED
// Save our action sets so our user can
action_map->set_path(default_tres_name, true);
ResourceSaver::save(action_map, default_tres_name);
#endif
}
}
// process our action map
if (action_map.is_valid()) {
HashMap<Ref<OpenXRAction>, Action *> xr_actions;
Array action_set_array = action_map->get_action_sets();
for (int i = 0; i < action_set_array.size(); i++) {
// Create our action set
Ref<OpenXRActionSet> xr_action_set = action_set_array[i];
ActionSet *action_set = create_action_set(xr_action_set->get_name(), xr_action_set->get_localized_name(), xr_action_set->get_priority());
if (!action_set) {
continue;
}
// Now create our actions for these
Array actions = xr_action_set->get_actions();
for (int j = 0; j < actions.size(); j++) {
Ref<OpenXRAction> xr_action = actions[j];
PackedStringArray toplevel_paths = xr_action->get_toplevel_paths();
Vector<Tracker *> trackers_for_action;
for (int k = 0; k < toplevel_paths.size(); k++) {
// Only check for our tracker if our path is supported.
if (openxr_api->is_top_level_path_supported(toplevel_paths[k])) {
Tracker *tracker = find_tracker(toplevel_paths[k], true);
if (tracker) {
trackers_for_action.push_back(tracker);
}
}
}
// Only add our action if we have at least one valid toplevel path
if (trackers_for_action.size() > 0) {
Action *action = create_action(action_set, xr_action->get_name(), xr_action->get_localized_name(), xr_action->get_action_type(), trackers_for_action);
if (action) {
// add this to our map for creating our interaction profiles
xr_actions[xr_action] = action;
}
}
}
}
// now do our suggestions
Array interaction_profile_array = action_map->get_interaction_profiles();
for (int i = 0; i < interaction_profile_array.size(); i++) {
Ref<OpenXRInteractionProfile> xr_interaction_profile = interaction_profile_array[i];
// 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());
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]);
}
}
// 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_profile_array.has(ip)) {
interaction_profile_array.push_back(ip);
}
}
}
}
}
OpenXRInterface::ActionSet *OpenXRInterface::create_action_set(const String &p_action_set_name, const String &p_localized_name, const int p_priority) {
ERR_FAIL_NULL_V(openxr_api, nullptr);
// find if it already exists
for (int i = 0; i < action_sets.size(); i++) {
if (action_sets[i]->action_set_name == p_action_set_name) {
// already exists in this set
return nullptr;
}
}
ActionSet *action_set = memnew(ActionSet);
action_set->action_set_name = p_action_set_name;
action_set->is_active = true;
action_set->action_set_rid = openxr_api->action_set_create(p_action_set_name, p_localized_name, p_priority);
action_sets.push_back(action_set);
return action_set;
}
void OpenXRInterface::free_action_sets() {
ERR_FAIL_NULL(openxr_api);
for (int i = 0; i < action_sets.size(); i++) {
ActionSet *action_set = action_sets[i];
free_actions(action_set);
openxr_api->action_set_free(action_set->action_set_rid);
memfree(action_set);
}
action_sets.clear();
}
OpenXRInterface::Action *OpenXRInterface::create_action(ActionSet *p_action_set, const String &p_action_name, const String &p_localized_name, OpenXRAction::ActionType p_action_type, const Vector<Tracker *> p_trackers) {
ERR_FAIL_NULL_V(openxr_api, nullptr);
for (int i = 0; i < p_action_set->actions.size(); i++) {
if (p_action_set->actions[i]->action_name == p_action_name) {
// already exists in this set
return nullptr;
}
}
Vector<RID> tracker_rids;
for (int i = 0; i < p_trackers.size(); i++) {
tracker_rids.push_back(p_trackers[i]->tracker_rid);
}
Action *action = memnew(Action);
if (p_action_type == OpenXRAction::OPENXR_ACTION_POSE) {
// We can't have dual action names in OpenXR hence we added _pose,
// but default, aim and grip and default pose action names in Godot so rename them on the tracker.
// NOTE need to decide on whether we should keep the naming convention or rename it on Godots side
if (p_action_name == "default_pose") {
action->action_name = "default";
} else if (p_action_name == "aim_pose") {
action->action_name = "aim";
} else if (p_action_name == "grip_pose") {
action->action_name = "grip";
} else {
action->action_name = p_action_name;
}
} else {
action->action_name = p_action_name;
}
action->action_type = p_action_type;
action->action_rid = openxr_api->action_create(p_action_set->action_set_rid, p_action_name, p_localized_name, p_action_type, tracker_rids);
p_action_set->actions.push_back(action);
// we link our actions back to our trackers so we know which actions to check when we're processing our trackers
for (int i = 0; i < p_trackers.size(); i++) {
if (!p_trackers[i]->actions.has(action)) {
p_trackers[i]->actions.push_back(action);
}
}
return action;
}
OpenXRInterface::Action *OpenXRInterface::find_action(const String &p_action_name) {
// We just find the first action by this name
for (int i = 0; i < action_sets.size(); i++) {
for (int j = 0; j < action_sets[i]->actions.size(); j++) {
if (action_sets[i]->actions[j]->action_name == p_action_name) {
return action_sets[i]->actions[j];
}
}
}
// not found
return nullptr;
}
void OpenXRInterface::free_actions(ActionSet *p_action_set) {
ERR_FAIL_NULL(openxr_api);
for (int i = 0; i < p_action_set->actions.size(); i++) {
Action *action = p_action_set->actions[i];
openxr_api->action_free(action->action_rid);
memdelete(action);
}
p_action_set->actions.clear();
}
OpenXRInterface::Tracker *OpenXRInterface::find_tracker(const String &p_tracker_name, bool p_create) {
XRServer *xr_server = XRServer::get_singleton();
ERR_FAIL_NULL_V(xr_server, nullptr);
ERR_FAIL_NULL_V(openxr_api, nullptr);
Tracker *tracker = nullptr;
for (int i = 0; i < trackers.size(); i++) {
tracker = trackers[i];
if (tracker->tracker_name == p_tracker_name) {
return tracker;
}
}
if (!p_create) {
return nullptr;
}
ERR_FAIL_COND_V(!openxr_api->is_top_level_path_supported(p_tracker_name), nullptr);
// Create our RID
RID tracker_rid = openxr_api->tracker_create(p_tracker_name);
ERR_FAIL_COND_V(tracker_rid.is_null(), nullptr);
// Create our controller tracker.
Ref<XRControllerTracker> controller_tracker;
controller_tracker.instantiate();
// We have standardized some names to make things nicer to the user so lets recognize the toplevel paths related to these.
if (p_tracker_name == "/user/hand/left") {
controller_tracker->set_tracker_name("left_hand");
controller_tracker->set_tracker_desc("Left hand controller");
controller_tracker->set_tracker_hand(XRPositionalTracker::TRACKER_HAND_LEFT);
} else if (p_tracker_name == "/user/hand/right") {
controller_tracker->set_tracker_name("right_hand");
controller_tracker->set_tracker_desc("Right hand controller");
controller_tracker->set_tracker_hand(XRPositionalTracker::TRACKER_HAND_RIGHT);
} else {
controller_tracker->set_tracker_name(p_tracker_name);
controller_tracker->set_tracker_desc(p_tracker_name);
}
controller_tracker->set_tracker_profile(INTERACTION_PROFILE_NONE);
xr_server->add_tracker(controller_tracker);
// create a new entry
tracker = memnew(Tracker);
tracker->tracker_name = p_tracker_name;
tracker->tracker_rid = tracker_rid;
tracker->controller_tracker = controller_tracker;
tracker->interaction_profile = RID();
trackers.push_back(tracker);
return tracker;
}
void OpenXRInterface::tracker_profile_changed(RID p_tracker, RID p_interaction_profile) {
Tracker *tracker = nullptr;
for (int i = 0; i < trackers.size() && tracker == nullptr; i++) {
if (trackers[i]->tracker_rid == p_tracker) {
tracker = trackers[i];
}
}
ERR_FAIL_NULL(tracker);
tracker->interaction_profile = p_interaction_profile;
if (p_interaction_profile.is_null()) {
print_verbose("OpenXR: Interaction profile for " + tracker->tracker_name + " changed to " + INTERACTION_PROFILE_NONE);
tracker->controller_tracker->set_tracker_profile(INTERACTION_PROFILE_NONE);
} else {
String name = openxr_api->interaction_profile_get_name(p_interaction_profile);
print_verbose("OpenXR: Interaction profile for " + tracker->tracker_name + " changed to " + name);
tracker->controller_tracker->set_tracker_profile(name);
}
}
void OpenXRInterface::handle_tracker(Tracker *p_tracker) {
ERR_FAIL_NULL(openxr_api);
ERR_FAIL_COND(p_tracker->controller_tracker.is_null());
// Note, which actions are actually bound to inputs are handled by our interaction profiles however interaction
// profiles are suggested bindings for controller types we know about. OpenXR runtimes can stray away from these
// and rebind them or even offer bindings to controllers that are not known to us.
// We don't really have a consistent way to detect whether a controller is active however as long as it is
// unbound it seems to be unavailable, so far unknown controller seem to mimic one of the profiles we've
// supplied.
if (p_tracker->interaction_profile.is_null()) {
return;
}
// We check all actions that are related to our tracker.
for (int i = 0; i < p_tracker->actions.size(); i++) {
Action *action = p_tracker->actions[i];
switch (action->action_type) {
case OpenXRAction::OPENXR_ACTION_BOOL: {
bool pressed = openxr_api->get_action_bool(action->action_rid, p_tracker->tracker_rid);
p_tracker->controller_tracker->set_input(action->action_name, Variant(pressed));
} break;
case OpenXRAction::OPENXR_ACTION_FLOAT: {
real_t value = openxr_api->get_action_float(action->action_rid, p_tracker->tracker_rid);
p_tracker->controller_tracker->set_input(action->action_name, Variant(value));
} break;
case OpenXRAction::OPENXR_ACTION_VECTOR2: {
Vector2 value = openxr_api->get_action_vector2(action->action_rid, p_tracker->tracker_rid);
p_tracker->controller_tracker->set_input(action->action_name, Variant(value));
} break;
case OpenXRAction::OPENXR_ACTION_POSE: {
Transform3D transform;
Vector3 linear, angular;
XRPose::TrackingConfidence confidence = openxr_api->get_action_pose(action->action_rid, p_tracker->tracker_rid, transform, linear, angular);
if (confidence != XRPose::XR_TRACKING_CONFIDENCE_NONE) {
p_tracker->controller_tracker->set_pose(action->action_name, transform, linear, angular, confidence);
} else {
p_tracker->controller_tracker->invalidate_pose(action->action_name);
}
} break;
default: {
// not yet supported
} break;
}
}
}
void OpenXRInterface::trigger_haptic_pulse(const String &p_action_name, const StringName &p_tracker_name, double p_frequency, double p_amplitude, double p_duration_sec, double p_delay_sec) {
ERR_FAIL_NULL(openxr_api);
Action *action = find_action(p_action_name);
ERR_FAIL_NULL(action);
// We need to map our tracker name to our OpenXR name for our inbuild names.
String tracker_name = p_tracker_name;
if (tracker_name == "left_hand") {
tracker_name = "/user/hand/left";
} else if (tracker_name == "right_hand") {
tracker_name = "/user/hand/right";
}
Tracker *tracker = find_tracker(tracker_name);
ERR_FAIL_NULL(tracker);
// TODO OpenXR does not support delay, so we may need to add support for that somehow...
XrDuration duration = XrDuration(p_duration_sec * 1000000000.0); // seconds -> nanoseconds
openxr_api->trigger_haptic_pulse(action->action_rid, tracker->tracker_rid, p_frequency, p_amplitude, duration);
}
void OpenXRInterface::free_trackers() {
XRServer *xr_server = XRServer::get_singleton();
ERR_FAIL_NULL(xr_server);
ERR_FAIL_NULL(openxr_api);
for (int i = 0; i < trackers.size(); i++) {
Tracker *tracker = trackers[i];
openxr_api->tracker_free(tracker->tracker_rid);
xr_server->remove_tracker(tracker->controller_tracker);
tracker->controller_tracker.unref();
memdelete(tracker);
}
trackers.clear();
}
void OpenXRInterface::free_interaction_profiles() {
ERR_FAIL_NULL(openxr_api);
for (int i = 0; i < interaction_profiles.size(); i++) {
openxr_api->interaction_profile_free(interaction_profiles[i]);
}
interaction_profiles.clear();
}
bool OpenXRInterface::initialize_on_startup() const {
if (openxr_api == nullptr) {
return false;
} else if (!openxr_api->is_initialized()) {
return false;
} else {
return true;
}
}
bool OpenXRInterface::is_initialized() const {
return initialized;
};
bool OpenXRInterface::initialize() {
XRServer *xr_server = XRServer::get_singleton();
ERR_FAIL_NULL_V(xr_server, false);
if (openxr_api == nullptr) {
return false;
} else if (!openxr_api->is_initialized()) {
return false;
} else if (initialized) {
return true;
}
// load up our action sets before setting up our session, note that our profiles are suggestions, OpenXR takes ownership of (re)binding
_load_action_map();
if (!openxr_api->initialize_session()) {
return false;
}
// we must create a tracker for our head
head.instantiate();
head->set_tracker_type(XRServer::TRACKER_HEAD);
head->set_tracker_name("head");
head->set_tracker_desc("Players head");
xr_server->add_tracker(head);
// attach action sets
Vector<RID> loaded_action_sets;
for (int i = 0; i < action_sets.size(); i++) {
loaded_action_sets.append(action_sets[i]->action_set_rid);
}
openxr_api->attach_action_sets(loaded_action_sets);
// make this our primary interface
xr_server->set_primary_interface(this);
// Register an additional output with the display server, so rendering won't
// be skipped if no windows are visible.
DisplayServer::get_singleton()->register_additional_output(this);
initialized = true;
return initialized;
}
void OpenXRInterface::uninitialize() {
// Our OpenXR driver will clean itself up properly when Godot exits, so we just do some basic stuff here
// end the session if we need to?
// cleanup stuff
free_trackers();
free_interaction_profiles();
free_action_sets();
XRServer *xr_server = XRServer::get_singleton();
if (xr_server) {
if (head.is_valid()) {
xr_server->remove_tracker(head);
head.unref();
}
}
DisplayServer::get_singleton()->unregister_additional_output(this);
initialized = false;
}
Dictionary OpenXRInterface::get_system_info() {
Dictionary dict;
if (openxr_api) {
dict[SNAME("XRRuntimeName")] = openxr_api->get_runtime_name();
dict[SNAME("XRRuntimeVersion")] = openxr_api->get_runtime_version();
}
return dict;
}
bool OpenXRInterface::supports_play_area_mode(XRInterface::PlayAreaMode p_mode) {
if (p_mode == XRInterface::XR_PLAY_AREA_3DOF) {
return false;
}
return true;
}
XRInterface::PlayAreaMode OpenXRInterface::get_play_area_mode() const {
if (!openxr_api || !initialized) {
return XRInterface::XR_PLAY_AREA_UNKNOWN;
}
XrReferenceSpaceType reference_space = openxr_api->get_reference_space();
if (reference_space == XR_REFERENCE_SPACE_TYPE_LOCAL) {
return XRInterface::XR_PLAY_AREA_SITTING;
} else if (reference_space == XR_REFERENCE_SPACE_TYPE_LOCAL_FLOOR_EXT) {
return XRInterface::XR_PLAY_AREA_ROOMSCALE;
} else if (reference_space == XR_REFERENCE_SPACE_TYPE_STAGE) {
return XRInterface::XR_PLAY_AREA_STAGE;
}
return XRInterface::XR_PLAY_AREA_UNKNOWN;
}
bool OpenXRInterface::set_play_area_mode(XRInterface::PlayAreaMode p_mode) {
ERR_FAIL_NULL_V(openxr_api, false);
XrReferenceSpaceType reference_space;
if (p_mode == XRInterface::XR_PLAY_AREA_SITTING) {
reference_space = XR_REFERENCE_SPACE_TYPE_LOCAL;
} else if (p_mode == XRInterface::XR_PLAY_AREA_ROOMSCALE) {
reference_space = XR_REFERENCE_SPACE_TYPE_LOCAL_FLOOR_EXT;
} else if (p_mode == XRInterface::XR_PLAY_AREA_STAGE) {
reference_space = XR_REFERENCE_SPACE_TYPE_STAGE;
} else {
return false;
}
if (openxr_api->set_requested_reference_space(reference_space)) {
XRServer *xr_server = XRServer::get_singleton();
if (xr_server) {
xr_server->clear_reference_frame();
}
return true;
}
return false;
}
PackedVector3Array OpenXRInterface::get_play_area() const {
XRServer *xr_server = XRServer::get_singleton();
ERR_FAIL_NULL_V(xr_server, PackedVector3Array());
PackedVector3Array arr;
Vector3 sides[4] = {
Vector3(-0.5f, 0.0f, -0.5f),
Vector3(0.5f, 0.0f, -0.5f),
Vector3(0.5f, 0.0f, 0.5f),
Vector3(-0.5f, 0.0f, 0.5f),
};
if (openxr_api != nullptr && openxr_api->is_initialized()) {
Size2 extents = openxr_api->get_play_space_bounds();
if (extents.width != 0.0 && extents.height != 0.0) {
Transform3D reference_frame = xr_server->get_reference_frame();
for (int i = 0; i < 4; i++) {
Vector3 coord = sides[i];
// Scale it up.
coord.x *= extents.width;
coord.z *= extents.height;
// Now apply our reference.
Vector3 out = reference_frame.xform(coord);
arr.push_back(out);
}
} else {
WARN_PRINT_ONCE("OpenXR: No extents available.");
}
}
return arr;
}
float OpenXRInterface::get_display_refresh_rate() const {
if (openxr_api == nullptr) {
return 0.0;
} else if (!openxr_api->is_initialized()) {
return 0.0;
} else {
return openxr_api->get_display_refresh_rate();
}
}
void OpenXRInterface::set_display_refresh_rate(float p_refresh_rate) {
if (openxr_api == nullptr) {
return;
} else if (!openxr_api->is_initialized()) {
return;
} else {
openxr_api->set_display_refresh_rate(p_refresh_rate);
}
}
Array OpenXRInterface::get_available_display_refresh_rates() const {
if (openxr_api == nullptr) {
return Array();
} else if (!openxr_api->is_initialized()) {
return Array();
} else {
return openxr_api->get_available_display_refresh_rates();
}
}
bool OpenXRInterface::is_hand_tracking_supported() {
if (openxr_api == nullptr) {
return false;
} else if (!openxr_api->is_initialized()) {
return false;
} else {
OpenXRHandTrackingExtension *hand_tracking_ext = OpenXRHandTrackingExtension::get_singleton();
if (hand_tracking_ext == nullptr) {
return false;
} else {
return hand_tracking_ext->get_active();
}
}
}
bool OpenXRInterface::is_hand_interaction_supported() const {
if (openxr_api == nullptr) {
return false;
} else if (!openxr_api->is_initialized()) {
return false;
} else {
OpenXRHandInteractionExtension *hand_interaction_ext = OpenXRHandInteractionExtension::get_singleton();
if (hand_interaction_ext == nullptr) {
return false;
} else {
return hand_interaction_ext->is_available();
}
}
}
bool OpenXRInterface::is_eye_gaze_interaction_supported() {
if (openxr_api == nullptr) {
return false;
} else if (!openxr_api->is_initialized()) {
return false;
} else {
OpenXREyeGazeInteractionExtension *eye_gaze_ext = OpenXREyeGazeInteractionExtension::get_singleton();
if (eye_gaze_ext == nullptr) {
return false;
} else {
return eye_gaze_ext->supports_eye_gaze_interaction();
}
}
}
bool OpenXRInterface::is_action_set_active(const String &p_action_set) const {
for (ActionSet *action_set : action_sets) {
if (action_set->action_set_name == p_action_set) {
return action_set->is_active;
}
}
WARN_PRINT("OpenXR: Unknown action set " + p_action_set);
return false;
}
void OpenXRInterface::set_action_set_active(const String &p_action_set, bool p_active) {
for (ActionSet *action_set : action_sets) {
if (action_set->action_set_name == p_action_set) {
action_set->is_active = p_active;
return;
}
}
WARN_PRINT("OpenXR: Unknown action set " + p_action_set);
}
Array OpenXRInterface::get_action_sets() const {
Array arr;
for (ActionSet *action_set : action_sets) {
arr.push_back(action_set->action_set_name);
}
return arr;
}
float OpenXRInterface::get_vrs_min_radius() const {
return xr_vrs.get_vrs_min_radius();
}
void OpenXRInterface::set_vrs_min_radius(float p_vrs_min_radius) {
xr_vrs.set_vrs_min_radius(p_vrs_min_radius);
}
float OpenXRInterface::get_vrs_strength() const {
return xr_vrs.get_vrs_strength();
}
void OpenXRInterface::set_vrs_strength(float p_vrs_strength) {
xr_vrs.set_vrs_strength(p_vrs_strength);
}
double OpenXRInterface::get_render_target_size_multiplier() const {
if (openxr_api == nullptr) {
return 1.0;
} else {
return openxr_api->get_render_target_size_multiplier();
}
}
void OpenXRInterface::set_render_target_size_multiplier(double multiplier) {
if (openxr_api == nullptr) {
return;
} else {
openxr_api->set_render_target_size_multiplier(multiplier);
}
}
bool OpenXRInterface::is_foveation_supported() const {
if (openxr_api == nullptr) {
return false;
} else {
return openxr_api->is_foveation_supported();
}
}
int OpenXRInterface::get_foveation_level() const {
if (openxr_api == nullptr) {
return 0;
} else {
return openxr_api->get_foveation_level();
}
}
void OpenXRInterface::set_foveation_level(int p_foveation_level) {
if (openxr_api == nullptr) {
return;
} else {
openxr_api->set_foveation_level(p_foveation_level);
}
}
bool OpenXRInterface::get_foveation_dynamic() const {
if (openxr_api == nullptr) {
return false;
} else {
return openxr_api->get_foveation_dynamic();
}
}
void OpenXRInterface::set_foveation_dynamic(bool p_foveation_dynamic) {
if (openxr_api == nullptr) {
return;
} else {
openxr_api->set_foveation_dynamic(p_foveation_dynamic);
}
}
Size2 OpenXRInterface::get_render_target_size() {
if (openxr_api == nullptr) {
return Size2();
} else {
return openxr_api->get_recommended_target_size();
}
}
uint32_t OpenXRInterface::get_view_count() {
// TODO set this based on our configuration
return 2;
}
void OpenXRInterface::_set_default_pos(Transform3D &p_transform, double p_world_scale, uint64_t p_eye) {
p_transform = Transform3D();
// if we're not tracking, don't put our head on the floor...
p_transform.origin.y = 1.5 * p_world_scale;
// overkill but..
if (p_eye == 1) {
p_transform.origin.x = 0.03 * p_world_scale;
} else if (p_eye == 2) {
p_transform.origin.x = -0.03 * p_world_scale;
}
}
Transform3D OpenXRInterface::get_camera_transform() {
XRServer *xr_server = XRServer::get_singleton();
ERR_FAIL_NULL_V(xr_server, Transform3D());
Transform3D hmd_transform;
double world_scale = xr_server->get_world_scale();
// head_transform should be updated in process
hmd_transform.basis = head_transform.basis;
hmd_transform.origin = head_transform.origin * world_scale;
return hmd_transform;
}
Transform3D OpenXRInterface::get_transform_for_view(uint32_t p_view, const Transform3D &p_cam_transform) {
XRServer *xr_server = XRServer::get_singleton();
ERR_FAIL_NULL_V(xr_server, Transform3D());
ERR_FAIL_UNSIGNED_INDEX_V_MSG(p_view, get_view_count(), Transform3D(), "View index outside bounds.");
Transform3D t;
if (openxr_api && openxr_api->get_view_transform(p_view, t)) {
// update our cached value if we have a valid transform
transform_for_view[p_view] = t;
} else {
// reuse cached value
t = transform_for_view[p_view];
}
// Apply our world scale
double world_scale = xr_server->get_world_scale();
t.origin *= world_scale;
return p_cam_transform * xr_server->get_reference_frame() * t;
}
Projection OpenXRInterface::get_projection_for_view(uint32_t p_view, double p_aspect, double p_z_near, double p_z_far) {
Projection cm;
ERR_FAIL_UNSIGNED_INDEX_V_MSG(p_view, get_view_count(), cm, "View index outside bounds.");
if (openxr_api) {
if (openxr_api->get_view_projection(p_view, p_z_near, p_z_far, cm)) {
return cm;
}
}
// Failed to get from our OpenXR device? Default to some sort of sensible camera matrix..
cm.set_for_hmd(p_view + 1, 1.0, 6.0, 14.5, 4.0, 1.5, p_z_near, p_z_far);
return cm;
}
RID OpenXRInterface::get_color_texture() {
if (openxr_api) {
return openxr_api->get_color_texture();
} else {
return RID();
}
}
RID OpenXRInterface::get_depth_texture() {
if (openxr_api) {
return openxr_api->get_depth_texture();
} else {
return RID();
}
}
void OpenXRInterface::handle_hand_tracking(const String &p_path, OpenXRHandTrackingExtension::HandTrackedHands p_hand) {
OpenXRHandTrackingExtension *hand_tracking_ext = OpenXRHandTrackingExtension::get_singleton();
if (hand_tracking_ext && hand_tracking_ext->get_active()) {
OpenXRInterface::Tracker *tracker = find_tracker(p_path);
if (tracker && tracker->controller_tracker.is_valid()) {
XrSpaceLocationFlags location_flags = hand_tracking_ext->get_hand_joint_location_flags(p_hand, XR_HAND_JOINT_PALM_EXT);
if (location_flags & (XR_SPACE_LOCATION_ORIENTATION_VALID_BIT + XR_SPACE_LOCATION_POSITION_VALID_BIT)) {
static const XrSpaceLocationFlags all_location_flags = XR_SPACE_LOCATION_ORIENTATION_VALID_BIT + XR_SPACE_LOCATION_POSITION_VALID_BIT + XR_SPACE_LOCATION_ORIENTATION_TRACKED_BIT + XR_SPACE_LOCATION_POSITION_TRACKED_BIT;
XRPose::TrackingConfidence confidence = XRPose::XR_TRACKING_CONFIDENCE_LOW;
Transform3D transform;
Vector3 linear_velocity;
Vector3 angular_velocity;
if ((location_flags & all_location_flags) == all_location_flags) {
// All flags set? confidence is high!
confidence = XRPose::XR_TRACKING_CONFIDENCE_HIGH;
}
if (location_flags & XR_SPACE_LOCATION_ORIENTATION_VALID_BIT) {
transform.basis = Basis(hand_tracking_ext->get_hand_joint_rotation(p_hand, XR_HAND_JOINT_PALM_EXT));
}
if (location_flags & XR_SPACE_LOCATION_POSITION_VALID_BIT) {
transform.origin = hand_tracking_ext->get_hand_joint_position(p_hand, XR_HAND_JOINT_PALM_EXT);
}
XrSpaceVelocityFlags velocity_flags = hand_tracking_ext->get_hand_joint_location_flags(p_hand, XR_HAND_JOINT_PALM_EXT);
if (velocity_flags & XR_SPACE_VELOCITY_LINEAR_VALID_BIT) {
linear_velocity = hand_tracking_ext->get_hand_joint_linear_velocity(p_hand, XR_HAND_JOINT_PALM_EXT);
}
if (velocity_flags & XR_SPACE_VELOCITY_ANGULAR_VALID_BIT) {
angular_velocity = hand_tracking_ext->get_hand_joint_angular_velocity(p_hand, XR_HAND_JOINT_PALM_EXT);
}
tracker->controller_tracker->set_pose("skeleton", transform, linear_velocity, angular_velocity, confidence);
} else {
tracker->controller_tracker->invalidate_pose("skeleton");
}
}
}
}
void OpenXRInterface::process() {
if (openxr_api) {
// do our normal process
if (openxr_api->process()) {
Transform3D t;
Vector3 linear_velocity;
Vector3 angular_velocity;
head_confidence = openxr_api->get_head_center(t, linear_velocity, angular_velocity);
if (head_confidence != XRPose::XR_TRACKING_CONFIDENCE_NONE) {
// Only update our transform if we have one to update it with
// note that poses are stored without world scale and reference frame applied!
head_transform = t;
head_linear_velocity = linear_velocity;
head_angular_velocity = angular_velocity;
}
}
// handle our action sets....
Vector<RID> active_sets;
for (int i = 0; i < action_sets.size(); i++) {
if (action_sets[i]->is_active) {
active_sets.push_back(action_sets[i]->action_set_rid);
}
}
if (openxr_api->sync_action_sets(active_sets)) {
for (int i = 0; i < trackers.size(); i++) {
handle_tracker(trackers[i]);
}
}
// Handle hand tracking
handle_hand_tracking("/user/hand/left", OpenXRHandTrackingExtension::OPENXR_TRACKED_LEFT_HAND);
handle_hand_tracking("/user/hand/right", OpenXRHandTrackingExtension::OPENXR_TRACKED_RIGHT_HAND);
}
if (head.is_valid()) {
head->set_pose("default", head_transform, head_linear_velocity, head_angular_velocity, head_confidence);
}
}
void OpenXRInterface::pre_render() {
if (openxr_api) {
openxr_api->pre_render();
}
}
bool OpenXRInterface::pre_draw_viewport(RID p_render_target) {
if (openxr_api) {
return openxr_api->pre_draw_viewport(p_render_target);
} else {
// don't render
return false;
}
}
Vector<BlitToScreen> OpenXRInterface::post_draw_viewport(RID p_render_target, const Rect2 &p_screen_rect) {
Vector<BlitToScreen> blit_to_screen;
#ifndef ANDROID_ENABLED
// If separate HMD we should output one eye to screen
if (p_screen_rect != Rect2()) {
BlitToScreen blit;
blit.render_target = p_render_target;
blit.multi_view.use_layer = true;
blit.multi_view.layer = 0;
blit.lens_distortion.apply = false;
Size2 render_size = get_render_target_size();
Rect2 dst_rect = p_screen_rect;
float new_height = dst_rect.size.x * (render_size.y / render_size.x);
if (new_height > dst_rect.size.y) {
dst_rect.position.y = (0.5 * dst_rect.size.y) - (0.5 * new_height);
dst_rect.size.y = new_height;
} else {
float new_width = dst_rect.size.y * (render_size.x / render_size.y);
dst_rect.position.x = (0.5 * dst_rect.size.x) - (0.5 * new_width);
dst_rect.size.x = new_width;
}
blit.dst_rect = dst_rect;
blit_to_screen.push_back(blit);
}
#endif
if (openxr_api) {
openxr_api->post_draw_viewport(p_render_target);
}
return blit_to_screen;
}
void OpenXRInterface::end_frame() {
if (openxr_api) {
openxr_api->end_frame();
}
}
bool OpenXRInterface::is_passthrough_supported() {
return get_supported_environment_blend_modes().find(XR_ENV_BLEND_MODE_ALPHA_BLEND);
}
bool OpenXRInterface::is_passthrough_enabled() {
return get_environment_blend_mode() == XR_ENV_BLEND_MODE_ALPHA_BLEND;
}
bool OpenXRInterface::start_passthrough() {
return set_environment_blend_mode(XR_ENV_BLEND_MODE_ALPHA_BLEND);
}
void OpenXRInterface::stop_passthrough() {
set_environment_blend_mode(XR_ENV_BLEND_MODE_OPAQUE);
}
Array OpenXRInterface::get_supported_environment_blend_modes() {
Array modes;
if (!openxr_api) {
return modes;
}
uint32_t count = 0;
const XrEnvironmentBlendMode *env_blend_modes = openxr_api->get_supported_environment_blend_modes(count);
if (!env_blend_modes) {
return modes;
}
for (uint32_t i = 0; i < count; i++) {
switch (env_blend_modes[i]) {
case XR_ENVIRONMENT_BLEND_MODE_OPAQUE:
modes.push_back(XR_ENV_BLEND_MODE_OPAQUE);
break;
case XR_ENVIRONMENT_BLEND_MODE_ADDITIVE:
modes.push_back(XR_ENV_BLEND_MODE_ADDITIVE);
break;
case XR_ENVIRONMENT_BLEND_MODE_ALPHA_BLEND:
modes.push_back(XR_ENV_BLEND_MODE_ALPHA_BLEND);
break;
default:
WARN_PRINT("Unsupported blend mode found: " + String::num_int64(int64_t(env_blend_modes[i])));
}
}
if (openxr_api->is_environment_blend_mode_alpha_blend_supported() == OpenXRAPI::OPENXR_ALPHA_BLEND_MODE_SUPPORT_EMULATING) {
modes.push_back(XR_ENV_BLEND_MODE_ALPHA_BLEND);
}
return modes;
}
XRInterface::EnvironmentBlendMode OpenXRInterface::get_environment_blend_mode() const {
if (openxr_api) {
XrEnvironmentBlendMode oxr_blend_mode = openxr_api->get_environment_blend_mode();
switch (oxr_blend_mode) {
case XR_ENVIRONMENT_BLEND_MODE_OPAQUE: {
return XR_ENV_BLEND_MODE_OPAQUE;
} break;
case XR_ENVIRONMENT_BLEND_MODE_ADDITIVE: {
return XR_ENV_BLEND_MODE_ADDITIVE;
} break;
case XR_ENVIRONMENT_BLEND_MODE_ALPHA_BLEND: {
return XR_ENV_BLEND_MODE_ALPHA_BLEND;
} break;
default:
break;
}
}
return XR_ENV_BLEND_MODE_OPAQUE;
}
bool OpenXRInterface::set_environment_blend_mode(XRInterface::EnvironmentBlendMode mode) {
if (openxr_api) {
XrEnvironmentBlendMode oxr_blend_mode;
switch (mode) {
case XR_ENV_BLEND_MODE_OPAQUE:
oxr_blend_mode = XR_ENVIRONMENT_BLEND_MODE_OPAQUE;
break;
case XR_ENV_BLEND_MODE_ADDITIVE:
oxr_blend_mode = XR_ENVIRONMENT_BLEND_MODE_ADDITIVE;
break;
case XR_ENV_BLEND_MODE_ALPHA_BLEND:
oxr_blend_mode = XR_ENVIRONMENT_BLEND_MODE_ALPHA_BLEND;
break;
default:
WARN_PRINT("Unknown blend mode requested: " + String::num_int64(int64_t(mode)));
oxr_blend_mode = XR_ENVIRONMENT_BLEND_MODE_OPAQUE;
}
return openxr_api->set_environment_blend_mode(oxr_blend_mode);
}
return false;
}
void OpenXRInterface::on_state_ready() {
emit_signal(SNAME("session_begun"));
}
void OpenXRInterface::on_state_visible() {
emit_signal(SNAME("session_visible"));
}
void OpenXRInterface::on_state_focused() {
emit_signal(SNAME("session_focussed"));
}
void OpenXRInterface::on_state_stopping() {
emit_signal(SNAME("session_stopping"));
}
void OpenXRInterface::on_state_loss_pending() {
emit_signal(SNAME("session_loss_pending"));
}
void OpenXRInterface::on_state_exiting() {
emit_signal(SNAME("instance_exiting"));
}
void OpenXRInterface::on_pose_recentered() {
emit_signal(SNAME("pose_recentered"));
}
void OpenXRInterface::on_refresh_rate_changes(float p_new_rate) {
emit_signal(SNAME("refresh_rate_changed"), p_new_rate);
}
/** Hand tracking. */
void OpenXRInterface::set_motion_range(const Hand p_hand, const HandMotionRange p_motion_range) {
ERR_FAIL_INDEX(p_hand, HAND_MAX);
ERR_FAIL_INDEX(p_motion_range, HAND_MOTION_RANGE_MAX);
OpenXRHandTrackingExtension *hand_tracking_ext = OpenXRHandTrackingExtension::get_singleton();
if (hand_tracking_ext && hand_tracking_ext->get_active()) {
XrHandJointsMotionRangeEXT xr_motion_range;
switch (p_motion_range) {
case HAND_MOTION_RANGE_UNOBSTRUCTED:
xr_motion_range = XR_HAND_JOINTS_MOTION_RANGE_UNOBSTRUCTED_EXT;
break;
case HAND_MOTION_RANGE_CONFORM_TO_CONTROLLER:
xr_motion_range = XR_HAND_JOINTS_MOTION_RANGE_CONFORMING_TO_CONTROLLER_EXT;
break;
default:
// Shouldn't get here, ERR_FAIL_INDEX should have caught this...
xr_motion_range = XR_HAND_JOINTS_MOTION_RANGE_CONFORMING_TO_CONTROLLER_EXT;
break;
}
hand_tracking_ext->set_motion_range(OpenXRHandTrackingExtension::HandTrackedHands(p_hand), xr_motion_range);
}
}
OpenXRInterface::HandMotionRange OpenXRInterface::get_motion_range(const Hand p_hand) const {
ERR_FAIL_INDEX_V(p_hand, HAND_MAX, HAND_MOTION_RANGE_MAX);
OpenXRHandTrackingExtension *hand_tracking_ext = OpenXRHandTrackingExtension::get_singleton();
if (hand_tracking_ext && hand_tracking_ext->get_active()) {
XrHandJointsMotionRangeEXT xr_motion_range = hand_tracking_ext->get_motion_range(OpenXRHandTrackingExtension::HandTrackedHands(p_hand));
switch (xr_motion_range) {
case XR_HAND_JOINTS_MOTION_RANGE_UNOBSTRUCTED_EXT:
return HAND_MOTION_RANGE_UNOBSTRUCTED;
case XR_HAND_JOINTS_MOTION_RANGE_CONFORMING_TO_CONTROLLER_EXT:
return HAND_MOTION_RANGE_CONFORM_TO_CONTROLLER;
default:
ERR_FAIL_V_MSG(HAND_MOTION_RANGE_MAX, "Unknown motion range returned by OpenXR");
}
}
return HAND_MOTION_RANGE_MAX;
}
OpenXRInterface::HandTrackedSource OpenXRInterface::get_hand_tracking_source(const Hand p_hand) const {
ERR_FAIL_INDEX_V(p_hand, HAND_MAX, HAND_TRACKED_SOURCE_UNKNOWN);
OpenXRHandTrackingExtension *hand_tracking_ext = OpenXRHandTrackingExtension::get_singleton();
if (hand_tracking_ext && hand_tracking_ext->get_active()) {
OpenXRHandTrackingExtension::HandTrackedSource source = hand_tracking_ext->get_hand_tracking_source(OpenXRHandTrackingExtension::HandTrackedHands(p_hand));
switch (source) {
case OpenXRHandTrackingExtension::OPENXR_SOURCE_UNOBSTRUCTED:
return HAND_TRACKED_SOURCE_UNOBSTRUCTED;
case OpenXRHandTrackingExtension::OPENXR_SOURCE_CONTROLLER:
return HAND_TRACKED_SOURCE_CONTROLLER;
case OpenXRHandTrackingExtension::OPENXR_SOURCE_UNKNOWN:
return HAND_TRACKED_SOURCE_UNKNOWN;
default:
ERR_FAIL_V_MSG(HAND_TRACKED_SOURCE_UNKNOWN, "Unknown hand tracking source returned by OpenXR");
}
}
return HAND_TRACKED_SOURCE_UNKNOWN;
}
BitField<OpenXRInterface::HandJointFlags> OpenXRInterface::get_hand_joint_flags(Hand p_hand, HandJoints p_joint) const {
BitField<OpenXRInterface::HandJointFlags> bits;
OpenXRHandTrackingExtension *hand_tracking_ext = OpenXRHandTrackingExtension::get_singleton();
if (hand_tracking_ext && hand_tracking_ext->get_active()) {
XrSpaceLocationFlags location_flags = hand_tracking_ext->get_hand_joint_location_flags(OpenXRHandTrackingExtension::HandTrackedHands(p_hand), XrHandJointEXT(p_joint));
if (location_flags & XR_SPACE_LOCATION_ORIENTATION_VALID_BIT) {
bits.set_flag(HAND_JOINT_ORIENTATION_VALID);
}
if (location_flags & XR_SPACE_LOCATION_ORIENTATION_TRACKED_BIT) {
bits.set_flag(HAND_JOINT_ORIENTATION_TRACKED);
}
if (location_flags & XR_SPACE_LOCATION_POSITION_VALID_BIT) {
bits.set_flag(HAND_JOINT_POSITION_VALID);
}
if (location_flags & XR_SPACE_LOCATION_POSITION_TRACKED_BIT) {
bits.set_flag(HAND_JOINT_POSITION_TRACKED);
}
XrSpaceVelocityFlags velocity_flags = hand_tracking_ext->get_hand_joint_velocity_flags(OpenXRHandTrackingExtension::HandTrackedHands(p_hand), XrHandJointEXT(p_joint));
if (velocity_flags & XR_SPACE_VELOCITY_LINEAR_VALID_BIT) {
bits.set_flag(HAND_JOINT_LINEAR_VELOCITY_VALID);
}
if (velocity_flags & XR_SPACE_VELOCITY_ANGULAR_VALID_BIT) {
bits.set_flag(HAND_JOINT_ANGULAR_VELOCITY_VALID);
}
}
return bits;
}
Quaternion OpenXRInterface::get_hand_joint_rotation(Hand p_hand, HandJoints p_joint) const {
OpenXRHandTrackingExtension *hand_tracking_ext = OpenXRHandTrackingExtension::get_singleton();
if (hand_tracking_ext && hand_tracking_ext->get_active()) {
return hand_tracking_ext->get_hand_joint_rotation(OpenXRHandTrackingExtension::HandTrackedHands(p_hand), XrHandJointEXT(p_joint));
}
return Quaternion();
}
Vector3 OpenXRInterface::get_hand_joint_position(Hand p_hand, HandJoints p_joint) const {
OpenXRHandTrackingExtension *hand_tracking_ext = OpenXRHandTrackingExtension::get_singleton();
if (hand_tracking_ext && hand_tracking_ext->get_active()) {
return hand_tracking_ext->get_hand_joint_position(OpenXRHandTrackingExtension::HandTrackedHands(p_hand), XrHandJointEXT(p_joint));
}
return Vector3();
}
float OpenXRInterface::get_hand_joint_radius(Hand p_hand, HandJoints p_joint) const {
OpenXRHandTrackingExtension *hand_tracking_ext = OpenXRHandTrackingExtension::get_singleton();
if (hand_tracking_ext && hand_tracking_ext->get_active()) {
return hand_tracking_ext->get_hand_joint_radius(OpenXRHandTrackingExtension::HandTrackedHands(p_hand), XrHandJointEXT(p_joint));
}
return 0.0;
}
Vector3 OpenXRInterface::get_hand_joint_linear_velocity(Hand p_hand, HandJoints p_joint) const {
OpenXRHandTrackingExtension *hand_tracking_ext = OpenXRHandTrackingExtension::get_singleton();
if (hand_tracking_ext && hand_tracking_ext->get_active()) {
return hand_tracking_ext->get_hand_joint_linear_velocity(OpenXRHandTrackingExtension::HandTrackedHands(p_hand), XrHandJointEXT(p_joint));
}
return Vector3();
}
Vector3 OpenXRInterface::get_hand_joint_angular_velocity(Hand p_hand, HandJoints p_joint) const {
OpenXRHandTrackingExtension *hand_tracking_ext = OpenXRHandTrackingExtension::get_singleton();
if (hand_tracking_ext && hand_tracking_ext->get_active()) {
return hand_tracking_ext->get_hand_joint_angular_velocity(OpenXRHandTrackingExtension::HandTrackedHands(p_hand), XrHandJointEXT(p_joint));
}
return Vector3();
}
RID OpenXRInterface::get_vrs_texture() {
if (!openxr_api) {
return RID();
}
PackedVector2Array eye_foci;
Size2 target_size = get_render_target_size();
real_t aspect_ratio = target_size.x / target_size.y;
uint32_t view_count = get_view_count();
for (uint32_t v = 0; v < view_count; v++) {
eye_foci.push_back(openxr_api->get_eye_focus(v, aspect_ratio));
}
return xr_vrs.make_vrs_texture(target_size, eye_foci);
}
OpenXRInterface::OpenXRInterface() {
openxr_api = OpenXRAPI::get_singleton();
if (openxr_api) {
openxr_api->set_xr_interface(this);
}
// while we don't have head tracking, don't put the headset on the floor...
_set_default_pos(head_transform, 1.0, 0);
_set_default_pos(transform_for_view[0], 1.0, 1);
_set_default_pos(transform_for_view[1], 1.0, 2);
}
OpenXRInterface::~OpenXRInterface() {
if (is_initialized()) {
uninitialize();
}
if (openxr_api) {
openxr_api->set_xr_interface(nullptr);
openxr_api = nullptr;
}
}
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