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Add support for WebXR

This commit is contained in:
David Snopek 2020-09-26 17:15:21 -05:00
parent a511a26ad8
commit a54a2d65e1
16 changed files with 2308 additions and 1 deletions
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#!/usr/bin/env python
Import("env")
Import("env_modules")
if env["platform"] == "javascript":
env.AddJSLibraries(["native/library_godot_webxr.js"])
env.AddJSExterns(["native/webxr.externs.js"])
env_webxr = env_modules.Clone()
env_webxr.add_source_files(env.modules_sources, "*.cpp")

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modules/webxr/config.py Normal file
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def can_build(env, platform):
return True
def configure(env):
pass
def get_doc_classes():
return ["WebXRInterface"]
def get_doc_path():
return "doc_classes"

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modules/webxr/doc_classes/WebXRInterface.xml Normal file
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<?xml version="1.0" encoding="UTF-8" ?>
<class name="WebXRInterface" inherits="XRInterface" version="3.2">
<brief_description>
AR/VR interface using WebXR.
</brief_description>
<description>
WebXR is an open standard that allows creating VR and AR applications that run in the web browser.
As such, this interface is only available when running in an HTML5 export.
WebXR supports a wide range of devices, from the very capable (like Valve Index, HTC Vive, Oculus Rift and Quest) down to the much less capable (like Google Cardboard, Oculus Go, GearVR, or plain smartphones).
Since WebXR is based on Javascript, it makes extensive use of callbacks, which means that [WebXRInterface] is forced to use signals, where other AR/VR interfaces would instead use functions that return a result immediately. This makes [WebXRInterface] quite a bit more complicated to intialize than other AR/VR interfaces.
Here's the minimum code required to start an immersive VR session:
[codeblock]
var webxr_interface
var vr_supported = false
func _ready():
# We assume this node has a canvas layer with a button on it as a child.
# This button is for the user to consent to entering immersive VR mode.
$CanvasLayer/Button.connect("pressed", self, "_on_Button_pressed")
webxr_interface = XRServer.find_interface("WebXR")
if webxr_interface:
# WebXR uses a lot of asynchronous callbacks, so we connect to various
# signals in order to receive them.
webxr_interface.connect("session_supported", self, "_webxr_session_supported")
webxr_interface.connect("session_started", self, "_webxr_session_started")
webxr_interface.connect("session_ended", self, "_webxr_session_ended")
webxr_interface.connect("session_failed", self, "_webxr_session_failed")
# This returns immediately - our _webxr_session_supported() method
# (which we connected to the "session_supported" signal above) will
# be called sometime later to let us know if it's supported or not.
webxr_interface.is_session_supported("immersive-vr")
func _webxr_session_supported(session_mode, supported):
if session_mode == 'immersive-vr':
vr_supported = supported
func _on_Button_pressed():
if not vr_supported:
OS.alert("Your browser doesn't support VR")
return
# We want an immersive VR session, as opposed to AR ('immersive-ar') or a
# simple 3DoF viewer ('viewer').
webxr_interface.session_mode = 'immersive-vr'
# 'bounded-floor' is room scale, 'local-floor' is a standing or sitting
# experience (it puts you 1.6m above the ground if you have 3DoF headset),
# whereas as 'local' puts you down at the XROrigin.
# This list means it'll first try to request 'bounded-floor', then
# fallback on 'local-floor' and ultimately 'local', if nothing else is
# supported.
webxr_interface.requested_reference_space_types = 'bounded-floor, local-floor, local'
# In order to use 'local-floor' or 'bounded-floor' we must also
# mark the features as required or optional.
webxr_interface.required_features = 'local-floor'
webxr_interface.optional_features = 'bounded-floor'
# This will return false if we're unable to even request the session,
# however, it can still fail asynchronously later in the process, so we
# only know if it's really succeeded or failed when our
# _webxr_session_started() or _webxr_session_failed() methods are called.
if not webxr_interface.initialize():
OS.alert("Failed to initialize")
return
func _webxr_session_started():
# This tells Godot to start rendering to the headset.
get_viewport().arvr = true
# This will be the reference space type you ultimately got, out of the
# types that you requested above. This is useful if you want the game to
# work a little differently in 'bounded-floor' versus 'local-floor'.
print ("Reference space type: " + webxr_interface.reference_space_type)
func _webxr_session_ended():
# If the user exits immersive mode, then we tell Godot to render to the web
# page again.
get_viewport().arvr = false
func _webxr_session_failed(message):
OS.alert("Failed to initialize: " + message)
[/codeblock]
There are several ways to handle "controller" input:
- Using [XRController3D] nodes and their [signal XRController3D.button_pressed] and [signal XRController3D.button_released] signals. This is how controllers are typically handled in AR/VR apps in Godot, however, this will only work with advanced VR controllers like the Oculus Touch or Index controllers, for example. The buttons codes are defined by [url=https://immersive-web.github.io/webxr-gamepads-module/#xr-standard-gamepad-mapping]Section 3.3 of the WebXR Gamepads Module[/url].
- Using [method Node._unhandled_input] and [InputEventJoypadButton] or [InputEventJoypadMotion]. This works the same as normal joypads, except the [member InputEvent.device] starts at 100, so the left controller is 100 and the right controller is 101, and the button codes are also defined by [url=https://immersive-web.github.io/webxr-gamepads-module/#xr-standard-gamepad-mapping]Section 3.3 of the WebXR Gamepads Module[/url].
- Using the [signal select], [signal squeeze] and related signals. This method will work for both advanced VR controllers, and non-traditional "controllers" like a tap on the screen, a spoken voice command or a button press on the device itself. The [code]controller_id[/code] passed to these signals is the same id as used in [member XRController3D.controller_id].
You can use one or all of these methods to allow your game or app to support a wider or narrower set of devices and input methods, or to allow more advanced interations with more advanced devices.
</description>
<tutorials>
<link title="How to make a VR game for WebXR with Godot">https://www.snopekgames.com/blog/2020/how-make-vr-game-webxr-godot</link>
</tutorials>
<methods>
<method name="is_session_supported">
<return type="void">
</return>
<argument index="0" name="session_mode" type="String">
</argument>
<description>
Checks if the given [code]session_mode[/code] is supported by the user's browser.
Possible values come from [url=https://developer.mozilla.org/en-US/docs/Web/API/XRSessionMode]WebXR's XRSessionMode[/url], including: [code]"immersive-vr"[/code], [code]"immersive-ar"[/code], and [code]"inline"[/code].
This method returns nothing, instead it emits the [signal session_supported] signal with the result.
</description>
</method>
<method name="get_controller">
<return type="XRPositionalTracker">
</return>
<argument index="0" name="controller_id" type="int">
</argument>
<description>
Gets an [XRPositionalTracker] for the given [code]controller_id[/code].
In the context of WebXR, a "controller" can be an advanced VR controller like the Oculus Touch or Index controllers, or even a tap on the screen, a spoken voice command or a button press on the device itself. When a non-traditional controller is used, interpret the position and orientation of the [XRPositionalTracker] as a ray pointing at the object the user wishes to interact with.
Use this method to get information about the controller that triggered one of these signals:
- [signal selectstart]
- [signal select]
- [signal selectend]
- [signal squeezestart]
- [signal squeeze]
- [signal squeezestart]
</description>
</method>
</methods>
<members>
<member name="session_mode" type="String" setter="set_session_mode" getter="get_session_mode">
The session mode used by [method XRInterface.initialize] when setting up the WebXR session.
This doesn't have any effect on the interface when already initialized.
Possible values come from [url=https://developer.mozilla.org/en-US/docs/Web/API/XRSessionMode]WebXR's XRSessionMode[/url], including: [code]"immersive-vr"[/code], [code]"immersive-ar"[/code], and [code]"inline"[/code].
</member>
<member name="required_features" type="String" setter="set_required_features" getter="get_required_features">
A comma-seperated list of required features used by [method XRInterface.initialize] when setting up the WebXR session.
If a user's browser or device doesn't support one of the given features, initialization will fail and [signal session_failed] will be emitted.
This doesn't have any effect on the interface when already initialized.
Possible values come from [url=https://developer.mozilla.org/en-US/docs/Web/API/XRReferenceSpaceType]WebXR's XRReferenceSpaceType[/url]. If you want to use a particular reference space type, it must be listed in either [member required_features] or [member optional_features].
</member>
<member name="optional_features" type="String" setter="set_optional_features" getter="get_optional_features">
A comma-seperated list of optional features used by [method XRInterface.initialize] when setting up the WebXR session.
If a user's browser or device doesn't support one of the given features, initialization will continue, but you won't be able to use the requested feature.
This doesn't have any effect on the interface when already initialized.
Possible values come from [url=https://developer.mozilla.org/en-US/docs/Web/API/XRReferenceSpaceType]WebXR's XRReferenceSpaceType[/url]. If you want to use a particular reference space type, it must be listed in either [member required_features] or [member optional_features].
</member>
<member name="requested_reference_space_types" type="String" setter="set_requested_reference_space_types" getter="get_requested_reference_space_types">
A comma-seperated list of reference space types used by [method XRInterface.initialize] when setting up the WebXR session.
The reference space types are requested in order, and the first on supported by the users device or browser will be used. The [member reference_space_type] property contains the reference space type that was ultimately used.
This doesn't have any effect on the interface when already initialized.
Possible values come from [url=https://developer.mozilla.org/en-US/docs/Web/API/XRReferenceSpaceType]WebXR's XRReferenceSpaceType[/url]. If you want to use a particular reference space type, it must be listed in either [member required_features] or [member optional_features].
</member>
<member name="reference_space_type" type="String" setter="" getter="get_reference_space_type">
The reference space type (from the list of requested types set in the [member requested_reference_space_types] property), that was ultimately used by [method XRInterface.initialize] when setting up the WebXR session.
Possible values come from [url=https://developer.mozilla.org/en-US/docs/Web/API/XRReferenceSpaceType]WebXR's XRReferenceSpaceType[/url]. If you want to use a particular reference space type, it must be listed in either [member required_features] or [member optional_features].
</member>
<member name="visibility_state" type="String" setter="" getter="get_visibility_state">
Indicates if the WebXR session's imagery is visible to the user.
Possible values come from [url=https://developer.mozilla.org/en-US/docs/Web/API/XRVisibilityState]WebXR's XRVisibilityState[/url], including [code]"hidden"[/code], [code]"visible"[/code], and [code]"visible-blurred"[/code].
</member>
<member name="bounds_geometry" type="PackedVector3Array" setter="" getter="get_bounds_geometry">
The vertices of a polygon which defines the boundaries of the user's play area.
This will only be available if [member reference_space_type] is [code]"bounded-floor"[/code] and only on certain browsers and devices that support it.
The [signal reference_space_reset] signal may indicate when this changes.
</member>
</members>
<signals>
<signal name="session_supported">
<argument index="0" name="session_mode" type="String">
</argument>
<argument index="1" name="supported" type="bool">
</argument>
<description>
Emitted by [method is_session_supported] to indicate if the given [code]session_mode[/code] is supported or not.
</description>
</signal>
<signal name="session_started">
<description>
Emitted by [method XRInterface.initialize] if the session is successfully started.
At this point, it's safe to do [code]get_viewport().arvr = true[/code] to instruct Godot to start rendering to the AR/VR device.
</description>
</signal>
<signal name="session_failed">
<argument index="0" name="message" type="String">
</argument>
<description>
Emitted by [method XRInterface.initialize] if the session fails to start.
[code]message[/code] may optionally contain an error message from WebXR, or an empty string if no message is available.
</description>
</signal>
<signal name="session_ended">
<description>
Emitted when the user ends the WebXR session (which can be done using UI from the browser or device).
At this point, you should do [code]get_viewport().arvr = false[/code] to instruct Godot to resume rendering to the screen.
</description>
</signal>
<signal name="selectstart">
<argument index="0" name="controller_id" type="int">
</argument>
<description>
Emitted when one of the "controllers" has started its "primary action".
Use [method get_controller] to get more information about the controller.
</description>
</signal>
<signal name="select">
<argument index="0" name="controller_id" type="int">
</argument>
<description>
Emitted after one of the "controllers" has finished its "primary action".
Use [method get_controller] to get more information about the controller.
</description>
</signal>
<signal name="selectend">
<argument index="0" name="controller_id" type="int">
</argument>
<description>
Emitted when one of the "controllers" has finished its "primary action".
Use [method get_controller] to get more information about the controller.
</description>
</signal>
<signal name="squeezestart">
<argument index="0" name="controller_id" type="int">
</argument>
<description>
Emitted when one of the "controllers" has started its "primary squeeze action".
Use [method get_controller] to get more information about the controller.
</description>
</signal>
<signal name="squeeze">
<argument index="0" name="controller_id" type="int">
</argument>
<description>
Emitted after one of the "controllers" has finished its "primary squeeze action".
Use [method get_controller] to get more information about the controller.
</description>
</signal>
<signal name="squeezeend">
<argument index="0" name="controller_id" type="int">
</argument>
<description>
Emitted when one of the "controllers" has finished its "primary squeeze action".
Use [method get_controller] to get more information about the controller.
</description>
</signal>
<signal name="visibility_state_changed">
<description>
Emitted when [member visibility_state] has changed.
</description>
</signal>
<signal name="reference_space_reset">
<description>
Emitted to indicate that the reference space has been reset or reconfigured.
When (or whether) this is emitted depends on the user's browser or device, but may include when the user has changed the dimensions of their play space (which you may be able to access via [member bounds_geometry]) or pressed/held a button to recenter their position.
See [url=https://developer.mozilla.org/en-US/docs/Web/API/XRReferenceSpace/reset_event]WebXR's XRReferenceSpace reset event[/url] for more information.
</description>
</signal>
</signals>
<constants>
</constants>
</class>

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/*************************************************************************/
/* godot_webxr.h */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2021 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 GODOT_WEBXR_H
#define GODOT_WEBXR_H
#ifdef __cplusplus
extern "C" {
#endif
#include "stddef.h"
typedef void (*GodotWebXRSupportedCallback)(char *p_session_mode, int p_supported);
typedef void (*GodotWebXRStartedCallback)(char *p_reference_space_type);
typedef void (*GodotWebXREndedCallback)();
typedef void (*GodotWebXRFailedCallback)(char *p_message);
typedef void (*GodotWebXRControllerCallback)();
typedef void (*GodotWebXRInputEventCallback)(char *p_signal_name, int p_controller_id);
typedef void (*GodotWebXRSimpleEventCallback)(char *p_signal_name);
extern int godot_webxr_is_supported();
extern void godot_webxr_is_session_supported(const char *p_session_mode, GodotWebXRSupportedCallback p_callback);
extern void godot_webxr_initialize(
const char *p_session_mode,
const char *p_required_features,
const char *p_optional_features,
const char *p_requested_reference_space_types,
GodotWebXRStartedCallback p_on_session_started,
GodotWebXREndedCallback p_on_session_ended,
GodotWebXRFailedCallback p_on_session_failed,
GodotWebXRControllerCallback p_on_controller_changed,
GodotWebXRInputEventCallback p_on_input_event,
GodotWebXRSimpleEventCallback p_on_simple_event);
extern void godot_webxr_uninitialize();
extern int *godot_webxr_get_render_targetsize();
extern float *godot_webxr_get_transform_for_eye(int p_eye);
extern float *godot_webxr_get_projection_for_eye(int p_eye);
extern int godot_webxr_get_external_texture_for_eye(int p_eye);
extern void godot_webxr_commit_for_eye(int p_eye);
extern void godot_webxr_sample_controller_data();
extern int godot_webxr_get_controller_count();
extern int godot_webxr_is_controller_connected(int p_controller);
extern float *godot_webxr_get_controller_transform(int p_controller);
extern int *godot_webxr_get_controller_buttons(int p_controller);
extern int *godot_webxr_get_controller_axes(int p_controller);
extern char *godot_webxr_get_visibility_state();
extern int *godot_webxr_get_bounds_geometry();
#ifdef __cplusplus
}
#endif
#endif /* GODOT_WEBXR_H */

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/*************************************************************************/
/* library_godot_webxr.js */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2020 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. */
/*************************************************************************/
const GodotWebXR = {
$GodotWebXR__deps: ['$Browser', '$GL', '$GodotRuntime'],
$GodotWebXR: {
gl: null,
texture_ids: [null, null],
textures: [null, null],
session: null,
space: null,
frame: null,
pose: null,
// Monkey-patch the requestAnimationFrame() used by Emscripten for the main
// loop, so that we can swap it out for XRSession.requestAnimationFrame()
// when an XR session is started.
orig_requestAnimationFrame: null,
requestAnimationFrame: (callback) => {
if (GodotWebXR.session && GodotWebXR.space) {
const onFrame = function (time, frame) {
GodotWebXR.frame = frame;
GodotWebXR.pose = frame.getViewerPose(GodotWebXR.space);
callback(time);
GodotWebXR.frame = null;
GodotWebXR.pose = null;
};
GodotWebXR.session.requestAnimationFrame(onFrame);
} else {
GodotWebXR.orig_requestAnimationFrame(callback);
}
},
monkeyPatchRequestAnimationFrame: (enable) => {
if (GodotWebXR.orig_requestAnimationFrame === null) {
GodotWebXR.orig_requestAnimationFrame = Browser.requestAnimationFrame;
}
Browser.requestAnimationFrame = enable
? GodotWebXR.requestAnimationFrame : GodotWebXR.orig_requestAnimationFrame;
},
pauseResumeMainLoop: () => {
// Once both GodotWebXR.session and GodotWebXR.space are set or
// unset, our monkey-patched requestAnimationFrame() should be
// enabled or disabled. When using the WebXR API Emulator, this
// gets picked up automatically, however, in the Oculus Browser
// on the Quest, we need to pause and resume the main loop.
Browser.pauseAsyncCallbacks();
Browser.mainLoop.pause();
window.setTimeout(function () {
Browser.resumeAsyncCallbacks();
Browser.mainLoop.resume();
}, 0);
},
// Some custom WebGL code for blitting our eye textures to the
// framebuffer we get from WebXR.
shaderProgram: null,
programInfo: null,
buffer: null,
// Vertex shader source.
vsSource: `
const vec2 scale = vec2(0.5, 0.5);
attribute vec4 aVertexPosition;
varying highp vec2 vTextureCoord;
void main () {
gl_Position = aVertexPosition;
vTextureCoord = aVertexPosition.xy * scale + scale;
}
`,
// Fragment shader source.
fsSource: `
varying highp vec2 vTextureCoord;
uniform sampler2D uSampler;
void main() {
gl_FragColor = texture2D(uSampler, vTextureCoord);
}
`,
initShaderProgram: (gl, vsSource, fsSource) => {
const vertexShader = GodotWebXR.loadShader(gl, gl.VERTEX_SHADER, vsSource);
const fragmentShader = GodotWebXR.loadShader(gl, gl.FRAGMENT_SHADER, fsSource);
const shaderProgram = gl.createProgram();
gl.attachShader(shaderProgram, vertexShader);
gl.attachShader(shaderProgram, fragmentShader);
gl.linkProgram(shaderProgram);
if (!gl.getProgramParameter(shaderProgram, gl.LINK_STATUS)) {
GodotRuntime.error(`Unable to initialize the shader program: ${gl.getProgramInfoLog(shaderProgram)}`);
return null;
}
return shaderProgram;
},
loadShader: (gl, type, source) => {
const shader = gl.createShader(type);
gl.shaderSource(shader, source);
gl.compileShader(shader);
if (!gl.getShaderParameter(shader, gl.COMPILE_STATUS)) {
GodotRuntime.error(`An error occurred compiling the shader: ${gl.getShaderInfoLog(shader)}`);
gl.deleteShader(shader);
return null;
}
return shader;
},
initBuffer: (gl) => {
const positionBuffer = gl.createBuffer();
gl.bindBuffer(gl.ARRAY_BUFFER, positionBuffer);
const positions = [
-1.0, -1.0,
1.0, -1.0,
-1.0, 1.0,
1.0, 1.0,
];
gl.bufferData(gl.ARRAY_BUFFER, new Float32Array(positions), gl.STATIC_DRAW);
return positionBuffer;
},
blitTexture: (gl, texture) => {
if (GodotWebXR.shaderProgram === null) {
GodotWebXR.shaderProgram = GodotWebXR.initShaderProgram(gl, GodotWebXR.vsSource, GodotWebXR.fsSource);
GodotWebXR.programInfo = {
program: GodotWebXR.shaderProgram,
attribLocations: {
vertexPosition: gl.getAttribLocation(GodotWebXR.shaderProgram, 'aVertexPosition'),
},
uniformLocations: {
uSampler: gl.getUniformLocation(GodotWebXR.shaderProgram, 'uSampler'),
},
};
GodotWebXR.buffer = GodotWebXR.initBuffer(gl);
}
const orig_program = gl.getParameter(gl.CURRENT_PROGRAM);
gl.useProgram(GodotWebXR.shaderProgram);
gl.bindBuffer(gl.ARRAY_BUFFER, GodotWebXR.buffer);
gl.vertexAttribPointer(GodotWebXR.programInfo.attribLocations.vertexPosition, 2, gl.FLOAT, false, 0, 0);
gl.enableVertexAttribArray(GodotWebXR.programInfo.attribLocations.vertexPosition);
gl.activeTexture(gl.TEXTURE0);
gl.bindTexture(gl.TEXTURE_2D, texture);
gl.uniform1i(GodotWebXR.programInfo.uniformLocations.uSampler, 0);
gl.drawArrays(gl.TRIANGLE_STRIP, 0, 4);
// Restore state.
gl.bindTexture(gl.TEXTURE_2D, null);
gl.disableVertexAttribArray(GodotWebXR.programInfo.attribLocations.vertexPosition);
gl.bindBuffer(gl.ARRAY_BUFFER, null);
gl.useProgram(orig_program);
},
// Holds the controllers list between function calls.
controllers: [],
// Updates controllers array, where the left hand (or sole tracker) is
// the first element, and the right hand is the second element, and any
// others placed at the 3rd position and up.
sampleControllers: () => {
if (!GodotWebXR.session || !GodotWebXR.frame) {
return;
}
let other_index = 2;
const controllers = [];
GodotWebXR.session.inputSources.forEach((input_source) => {
if (input_source.targetRayMode === 'tracked-pointer') {
if (input_source.handedness === 'right') {
controllers[1] = input_source;
} else if (input_source.handedness === 'left' || !controllers[0]) {
controllers[0] = input_source;
}
} else {
controllers[other_index++] = input_source;
}
});
GodotWebXR.controllers = controllers;
},
getControllerId: (input_source) => GodotWebXR.controllers.indexOf(input_source),
},
godot_webxr_is_supported__proxy: 'sync',
godot_webxr_is_supported__sig: 'i',
godot_webxr_is_supported: function () {
return !!navigator.xr;
},
godot_webxr_is_session_supported__proxy: 'sync',
godot_webxr_is_session_supported__sig: 'vii',
godot_webxr_is_session_supported: function (p_session_mode, p_callback) {
const session_mode = GodotRuntime.parseString(p_session_mode);
const cb = GodotRuntime.get_func(p_callback);
if (navigator.xr) {
navigator.xr.isSessionSupported(session_mode).then(function (supported) {
const c_str = GodotRuntime.allocString(session_mode);
cb(c_str, supported ? 1 : 0);
GodotRuntime.free(c_str);
});
} else {
const c_str = GodotRuntime.allocString(session_mode);
cb(c_str, 0);
GodotRuntime.free(c_str);
}
},
godot_webxr_initialize__deps: ['emscripten_webgl_get_current_context'],
godot_webxr_initialize__proxy: 'sync',
godot_webxr_initialize__sig: 'viiiiiiiiii',
godot_webxr_initialize: function (p_session_mode, p_required_features, p_optional_features, p_requested_reference_spaces, p_on_session_started, p_on_session_ended, p_on_session_failed, p_on_controller_changed, p_on_input_event, p_on_simple_event) {
GodotWebXR.monkeyPatchRequestAnimationFrame(true);
const session_mode = GodotRuntime.parseString(p_session_mode);
const required_features = GodotRuntime.parseString(p_required_features).split(',').map((s) => s.trim()).filter((s) => s !== '');
const optional_features = GodotRuntime.parseString(p_optional_features).split(',').map((s) => s.trim()).filter((s) => s !== '');
const requested_reference_space_types = GodotRuntime.parseString(p_requested_reference_spaces).split(',').map((s) => s.trim());
const onstarted = GodotRuntime.get_func(p_on_session_started);
const onended = GodotRuntime.get_func(p_on_session_ended);
const onfailed = GodotRuntime.get_func(p_on_session_failed);
const oncontroller = GodotRuntime.get_func(p_on_controller_changed);
const oninputevent = GodotRuntime.get_func(p_on_input_event);
const onsimpleevent = GodotRuntime.get_func(p_on_simple_event);
const session_init = {};
if (required_features.length > 0) {
session_init['requiredFeatures'] = required_features;
}
if (optional_features.length > 0) {
session_init['optionalFeatures'] = optional_features;
}
navigator.xr.requestSession(session_mode, session_init).then(function (session) {
GodotWebXR.session = session;
session.addEventListener('end', function (evt) {
onended();
});
session.addEventListener('inputsourceschange', function (evt) {
let controller_changed = false;
[evt.added, evt.removed].forEach((lst) => {
lst.forEach((input_source) => {
if (input_source.targetRayMode === 'tracked-pointer') {
controller_changed = true;
}
});
});
if (controller_changed) {
oncontroller();
}
});
['selectstart', 'select', 'selectend', 'squeezestart', 'squeeze', 'squeezeend'].forEach((input_event) => {
session.addEventListener(input_event, function (evt) {
const c_str = GodotRuntime.allocString(input_event);
oninputevent(c_str, GodotWebXR.getControllerId(evt.inputSource));
GodotRuntime.free(c_str);
});
});
session.addEventListener('visibilitychange', function (evt) {
const c_str = GodotRuntime.allocString('visibility_state_changed');
onsimpleevent(c_str);
GodotRuntime.free(c_str);
});
const gl_context_handle = _emscripten_webgl_get_current_context(); // eslint-disable-line no-undef
const gl = GL.getContext(gl_context_handle).GLctx;
GodotWebXR.gl = gl;
gl.makeXRCompatible().then(function () {
session.updateRenderState({
baseLayer: new XRWebGLLayer(session, gl),
});
function onReferenceSpaceSuccess(reference_space, reference_space_type) {
GodotWebXR.space = reference_space;
// Using reference_space.addEventListener() crashes when
// using the polyfill with the WebXR Emulator extension,
// so we set the event property instead.
reference_space.onreset = function (evt) {
const c_str = GodotRuntime.allocString('reference_space_reset');
onsimpleevent(c_str);
GodotRuntime.free(c_str);
};
// Now that both GodotWebXR.session and GodotWebXR.space are
// set, we need to pause and resume the main loop for the XR
// main loop to kick in.
GodotWebXR.pauseResumeMainLoop();
// Call in setTimeout() so that errors in the onstarted()
// callback don't bubble up here and cause Godot to try the
// next reference space.
window.setTimeout(function () {
const c_str = GodotRuntime.allocString(reference_space_type);
onstarted(c_str);
GodotRuntime.free(c_str);
}, 0);
}
function requestReferenceSpace() {
const reference_space_type = requested_reference_space_types.shift();
session.requestReferenceSpace(reference_space_type)
.then((refSpace) => {
onReferenceSpaceSuccess(refSpace, reference_space_type);
})
.catch(() => {
if (requested_reference_space_types.length === 0) {
const c_str = GodotRuntime.allocString('Unable to get any of the requested reference space types');
onfailed(c_str);
GodotRuntime.free(c_str);
} else {
requestReferenceSpace();
}
});
}
requestReferenceSpace();
}).catch(function (error) {
const c_str = GodotRuntime.allocString(`Unable to make WebGL context compatible with WebXR: ${error}`);
onfailed(c_str);
GodotRuntime.free(c_str);
});
}).catch(function (error) {
const c_str = GodotRuntime.allocString(`Unable to start session: ${error}`);
onfailed(c_str);
GodotRuntime.free(c_str);
});
},
godot_webxr_uninitialize__proxy: 'sync',
godot_webxr_uninitialize__sig: 'v',
godot_webxr_uninitialize: function () {
if (GodotWebXR.session) {
GodotWebXR.session.end()
// Prevent exception when session has already ended.
.catch((e) => { });
}
// Clean-up the textures we allocated for each view.
const gl = GodotWebXR.gl;
for (let i = 0; i < GodotWebXR.textures.length; i++) {
const texture = GodotWebXR.textures[i];
if (texture !== null) {
gl.deleteTexture(texture);
}
GodotWebXR.textures[i] = null;
GodotWebXR.texture_ids[i] = null;
}
GodotWebXR.session = null;
GodotWebXR.space = null;
GodotWebXR.frame = null;
GodotWebXR.pose = null;
// Disable the monkey-patched window.requestAnimationFrame() and
// pause/restart the main loop to activate it on all platforms.
GodotWebXR.monkeyPatchRequestAnimationFrame(false);
GodotWebXR.pauseResumeMainLoop();
},
godot_webxr_get_render_targetsize__proxy: 'sync',
godot_webxr_get_render_targetsize__sig: 'i',
godot_webxr_get_render_targetsize: function () {
if (!GodotWebXR.session || !GodotWebXR.pose) {
return 0;
}
const glLayer = GodotWebXR.session.renderState.baseLayer;
const view = GodotWebXR.pose.views[0];
const viewport = glLayer.getViewport(view);
const buf = GodotRuntime.malloc(2 * 4);
GodotRuntime.setHeapValue(buf + 0, viewport.width, 'i32');
GodotRuntime.setHeapValue(buf + 4, viewport.height, 'i32');
return buf;
},
godot_webxr_get_transform_for_eye__proxy: 'sync',
godot_webxr_get_transform_for_eye__sig: 'ii',
godot_webxr_get_transform_for_eye: function (p_eye) {
if (!GodotWebXR.session || !GodotWebXR.pose) {
return 0;
}
const views = GodotWebXR.pose.views;
let matrix;
if (p_eye === 0) {
matrix = GodotWebXR.pose.transform.matrix;
} else {
matrix = views[p_eye - 1].transform.matrix;
}
const buf = GodotRuntime.malloc(16 * 4);
for (let i = 0; i < 16; i++) {
GodotRuntime.setHeapValue(buf + (i * 4), matrix[i], 'float');
}
return buf;
},
godot_webxr_get_projection_for_eye__proxy: 'sync',
godot_webxr_get_projection_for_eye__sig: 'ii',
godot_webxr_get_projection_for_eye: function (p_eye) {
if (!GodotWebXR.session || !GodotWebXR.pose) {
return 0;
}
const view_index = (p_eye === 2 /* ARVRInterface::EYE_RIGHT */) ? 1 : 0;
const matrix = GodotWebXR.pose.views[view_index].projectionMatrix;
const buf = GodotRuntime.malloc(16 * 4);
for (let i = 0; i < 16; i++) {
GodotRuntime.setHeapValue(buf + (i * 4), matrix[i], 'float');
}
return buf;
},
godot_webxr_get_external_texture_for_eye__proxy: 'sync',
godot_webxr_get_external_texture_for_eye__sig: 'ii',
godot_webxr_get_external_texture_for_eye: function (p_eye) {
if (!GodotWebXR.session || !GodotWebXR.pose) {
return 0;
}
const view_index = (p_eye === 2 /* ARVRInterface::EYE_RIGHT */) ? 1 : 0;
if (GodotWebXR.texture_ids[view_index]) {
return GodotWebXR.texture_ids[view_index];
}
const glLayer = GodotWebXR.session.renderState.baseLayer;
const view = GodotWebXR.pose.views[view_index];
const viewport = glLayer.getViewport(view);
const gl = GodotWebXR.gl;
const texture = gl.createTexture();
gl.bindTexture(gl.TEXTURE_2D, texture);
gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, viewport.width, viewport.height, 0, gl.RGBA, gl.UNSIGNED_BYTE, null);
gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST);
gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST);
gl.bindTexture(gl.TEXTURE_2D, null);
const texture_id = GL.getNewId(GL.textures);
GL.textures[texture_id] = texture;
GodotWebXR.textures[view_index] = texture;
GodotWebXR.texture_ids[view_index] = texture_id;
return texture_id;
},
godot_webxr_commit_for_eye__proxy: 'sync',
godot_webxr_commit_for_eye__sig: 'vi',
godot_webxr_commit_for_eye: function (p_eye) {
if (!GodotWebXR.session || !GodotWebXR.pose) {
return;
}
const view_index = (p_eye === 2 /* ARVRInterface::EYE_RIGHT */) ? 1 : 0;
const glLayer = GodotWebXR.session.renderState.baseLayer;
const view = GodotWebXR.pose.views[view_index];
const viewport = glLayer.getViewport(view);
const gl = GodotWebXR.gl;
const orig_framebuffer = gl.getParameter(gl.FRAMEBUFFER_BINDING);
const orig_viewport = gl.getParameter(gl.VIEWPORT);
// Bind to WebXR's framebuffer.
gl.bindFramebuffer(gl.FRAMEBUFFER, glLayer.framebuffer);
gl.viewport(viewport.x, viewport.y, viewport.width, viewport.height);
GodotWebXR.blitTexture(gl, GodotWebXR.textures[view_index]);
// Restore state.
gl.bindFramebuffer(gl.FRAMEBUFFER, orig_framebuffer);
gl.viewport(orig_viewport[0], orig_viewport[1], orig_viewport[2], orig_viewport[3]);
},
godot_webxr_sample_controller_data__proxy: 'sync',
godot_webxr_sample_controller_data__sig: 'v',
godot_webxr_sample_controller_data: function () {
GodotWebXR.sampleControllers();
},
godot_webxr_get_controller_count__proxy: 'sync',
godot_webxr_get_controller_count__sig: 'i',
godot_webxr_get_controller_count: function () {
if (!GodotWebXR.session || !GodotWebXR.frame) {
return 0;
}
return GodotWebXR.controllers.length;
},
godot_webxr_is_controller_connected__proxy: 'sync',
godot_webxr_is_controller_connected__sig: 'ii',
godot_webxr_is_controller_connected: function (p_controller) {
if (!GodotWebXR.session || !GodotWebXR.frame) {
return false;
}
return !!GodotWebXR.controllers[p_controller];
},
godot_webxr_get_controller_transform__proxy: 'sync',
godot_webxr_get_controller_transform__sig: 'ii',
godot_webxr_get_controller_transform: function (p_controller) {
if (!GodotWebXR.session || !GodotWebXR.frame) {
return 0;
}
const controller = GodotWebXR.controllers[p_controller];
if (!controller) {
return 0;
}
const frame = GodotWebXR.frame;
const space = GodotWebXR.space;
const pose = frame.getPose(controller.targetRaySpace, space);
if (!pose) {
// This can mean that the controller lost tracking.
return 0;
}
const matrix = pose.transform.matrix;
const buf = GodotRuntime.malloc(16 * 4);
for (let i = 0; i < 16; i++) {
GodotRuntime.setHeapValue(buf + (i * 4), matrix[i], 'float');
}
return buf;
},
godot_webxr_get_controller_buttons__proxy: 'sync',
godot_webxr_get_controller_buttons__sig: 'ii',
godot_webxr_get_controller_buttons: function (p_controller) {
if (GodotWebXR.controllers.length === 0) {
return 0;
}
const controller = GodotWebXR.controllers[p_controller];
if (!controller || !controller.gamepad) {
return 0;
}
const button_count = controller.gamepad.buttons.length;
const buf = GodotRuntime.malloc((button_count + 1) * 4);
GodotRuntime.setHeapValue(buf, button_count, 'i32');
for (let i = 0; i < button_count; i++) {
GodotRuntime.setHeapValue(buf + 4 + (i * 4), controller.gamepad.buttons[i].value, 'float');
}
return buf;
},
godot_webxr_get_controller_axes__proxy: 'sync',
godot_webxr_get_controller_axes__sig: 'ii',
godot_webxr_get_controller_axes: function (p_controller) {
if (GodotWebXR.controllers.length === 0) {
return 0;
}
const controller = GodotWebXR.controllers[p_controller];
if (!controller || !controller.gamepad) {
return 0;
}
const axes_count = controller.gamepad.axes.length;
const buf = GodotRuntime.malloc((axes_count + 1) * 4);
GodotRuntime.setHeapValue(buf, axes_count, 'i32');
for (let i = 0; i < axes_count; i++) {
GodotRuntime.setHeapValue(buf + 4 + (i * 4), controller.gamepad.axes[i], 'float');
}
return buf;
},
godot_webxr_get_visibility_state__proxy: 'sync',
godot_webxr_get_visibility_state__sig: 'i',
godot_webxr_get_visibility_state: function () {
if (!GodotWebXR.session || !GodotWebXR.session.visibilityState) {
return 0;
}
return GodotRuntime.allocString(GodotWebXR.session.visibilityState);
},
godot_webxr_get_bounds_geometry__proxy: 'sync',
godot_webxr_get_bounds_geometry__sig: 'i',
godot_webxr_get_bounds_geometry: function () {
if (!GodotWebXR.space || !GodotWebXR.space.boundsGeometry) {
return 0;
}
const point_count = GodotWebXR.space.boundsGeometry.length;
if (point_count === 0) {
return 0;
}
const buf = GodotRuntime.malloc(((point_count * 3) + 1) * 4);
GodotRuntime.setHeapValue(buf, point_count, 'i32');
for (let i = 0; i < point_count; i++) {
const point = GodotWebXR.space.boundsGeometry[i];
GodotRuntime.setHeapValue(buf + ((i * 3) + 1) * 4, point.x, 'float');
GodotRuntime.setHeapValue(buf + ((i * 3) + 2) * 4, point.y, 'float');
GodotRuntime.setHeapValue(buf + ((i * 3) + 3) * 4, point.z, 'float');
}
return buf;
},
};
autoAddDeps(GodotWebXR, '$GodotWebXR');
mergeInto(LibraryManager.library, GodotWebXR);

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modules/webxr/native/webxr.externs.js Normal file
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@ -0,0 +1,499 @@
/**
* @type {XR}
*/
Navigator.prototype.xr;
/**
* @constructor
*/
function XRSessionInit() {};
/**
* @type {Array<string>}
*/
XRSessionInit.prototype.requiredFeatures;
/**
* @type {Array<string>}
*/
XRSessionInit.prototype.optionalFeatures;
/**
* @constructor
*/
function XR() {}
/**
* @type {?function (Event)}
*/
XR.prototype.ondevicechanged;
/**
* @param {string} mode
*
* @return {!Promise<boolean>}
*/
XR.prototype.isSessionSupported = function(mode) {}
/**
* @param {string} mode
* @param {XRSessionInit} options
*
* @return {!Promise<XRSession>}
*/
XR.prototype.requestSession = function(mode, options) {}
/**
* @constructor
*/
function XRSession() {}
/**
* @type {XRRenderState}
*/
XRSession.prototype.renderState;
/**
* @type {Array<XRInputSource>}
*/
XRSession.prototype.inputSources;
/**
* @type {string}
*/
XRSession.prototype.visibilityState;
/**
* @type {?function (Event)}
*/
XRSession.prototype.onend;
/**
* @type {?function (XRInputSourcesChangeEvent)}
*/
XRSession.prototype.oninputsourceschange;
/**
* @type {?function (XRInputSourceEvent)}
*/
XRSession.prototype.onselectstart;
/**
* @type {?function (XRInputSourceEvent)}
*/
XRSession.prototype.onselect;
/**
* @type {?function (XRInputSourceEvent)}
*/
XRSession.prototype.onselectend;
/**
* @type {?function (XRInputSourceEvent)}
*/
XRSession.prototype.onsqueezestart;
/**
* @type {?function (XRInputSourceEvent)}
*/
XRSession.prototype.onsqueeze;
/**
* @type {?function (XRInputSourceEvent)}
*/
XRSession.prototype.onsqueezeend;
/**
* @type {?function (Event)}
*/
XRSession.prototype.onvisibilitychange;
/**
* @param {XRRenderStateInit} state
* @return {void}
*/
XRSession.prototype.updateRenderState = function (state) {};
/**
* @param {XRFrameRequestCallback} callback
* @return {number}
*/
XRSession.prototype.requestAnimationFrame = function (callback) {};
/**
* @param {number} handle
* @return {void}
*/
XRSession.prototype.cancelAnimationFrame = function (handle) {};
/**
* @return {Promise<void>}
*/
XRSession.prototype.end = function () {};
/**
* @param {string} referenceSpaceType
* @return {Promise<XRReferenceSpace>}
*/
XRSession.prototype.requestReferenceSpace = function (referenceSpaceType) {};
/**
* @typedef {function(number, XRFrame): undefined}
*/
var XRFrameRequestCallback;
/**
* @constructor
*/
function XRRenderStateInit() {}
/**
* @type {number}
*/
XRRenderStateInit.prototype.depthNear;
/**
* @type {number}
*/
XRRenderStateInit.prototype.depthFar;
/**
* @type {number}
*/
XRRenderStateInit.prototype.inlineVerticalFieldOfView;
/**
* @type {?XRWebGLLayer}
*/
XRRenderStateInit.prototype.baseLayer;
/**
* @constructor
*/
function XRRenderState() {};
/**
* @type {number}
*/
XRRenderState.prototype.depthNear;
/**
* @type {number}
*/
XRRenderState.prototype.depthFar;
/**
* @type {?number}
*/
XRRenderState.prototype.inlineVerticalFieldOfView;
/**
* @type {?XRWebGLLayer}
*/
XRRenderState.prototype.baseLayer;
/**
* @constructor
*/
function XRFrame() {}
/**
* @type {XRSession}
*/
XRFrame.prototype.session;
/**
* @param {XRReferenceSpace} referenceSpace
* @return {?XRViewerPose}
*/
XRFrame.prototype.getViewerPose = function (referenceSpace) {};
/**
*
* @param {XRSpace} space
* @param {XRSpace} baseSpace
* @return {XRPose}
*/
XRFrame.prototype.getPose = function (space, baseSpace) {};
/**
* @constructor
*/
function XRReferenceSpace() {};
/**
* @type {Array<DOMPointReadOnly>}
*/
XRReferenceSpace.prototype.boundsGeometry;
/**
* @param {XRRigidTransform} originOffset
* @return {XRReferenceSpace}
*/
XRReferenceSpace.prototype.getOffsetReferenceSpace = function(originOffset) {};
/**
* @type {?function (Event)}
*/
XRReferenceSpace.prototype.onreset;
/**
* @constructor
*/
function XRRigidTransform() {};
/**
* @type {DOMPointReadOnly}
*/
XRRigidTransform.prototype.position;
/**
* @type {DOMPointReadOnly}
*/
XRRigidTransform.prototype.orientation;
/**
* @type {Float32Array}
*/
XRRigidTransform.prototype.matrix;
/**
* @type {XRRigidTransform}
*/
XRRigidTransform.prototype.inverse;
/**
* @constructor
*/
function XRView() {}
/**
* @type {string}
*/
XRView.prototype.eye;
/**
* @type {Float32Array}
*/
XRView.prototype.projectionMatrix;
/**
* @type {XRRigidTransform}
*/
XRView.prototype.transform;
/**
* @constructor
*/
function XRViewerPose() {}
/**
* @type {Array<XRView>}
*/
XRViewerPose.prototype.views;
/**
* @constructor
*/
function XRViewport() {}
/**
* @type {number}
*/
XRViewport.prototype.x;
/**
* @type {number}
*/
XRViewport.prototype.y;
/**
* @type {number}
*/
XRViewport.prototype.width;
/**
* @type {number}
*/
XRViewport.prototype.height;
/**
* @constructor
*/
function XRWebGLLayerInit() {};
/**
* @type {boolean}
*/
XRWebGLLayerInit.prototype.antialias;
/**
* @type {boolean}
*/
XRWebGLLayerInit.prototype.depth;
/**
* @type {boolean}
*/
XRWebGLLayerInit.prototype.stencil;
/**
* @type {boolean}
*/
XRWebGLLayerInit.prototype.alpha;
/**
* @type {boolean}
*/
XRWebGLLayerInit.prototype.ignoreDepthValues;
/**
* @type {boolean}
*/
XRWebGLLayerInit.prototype.ignoreDepthValues;
/**
* @type {number}
*/
XRWebGLLayerInit.prototype.framebufferScaleFactor;
/**
* @constructor
*
* @param {XRSession} session
* @param {WebGLRenderContext|WebGL2RenderingContext} ctx
* @param {?XRWebGLLayerInit} options
*/
function XRWebGLLayer(session, ctx, options) {}
/**
* @type {boolean}
*/
XRWebGLLayer.prototype.antialias;
/**
* @type {boolean}
*/
XRWebGLLayer.prototype.ignoreDepthValues;
/**
* @type {number}
*/
XRWebGLLayer.prototype.framebufferWidth;
/**
* @type {number}
*/
XRWebGLLayer.prototype.framebufferHeight;
/**
* @type {WebGLFramebuffer}
*/
XRWebGLLayer.prototype.framebuffer;
/**
* @param {XRView} view
* @return {?XRViewport}
*/
XRWebGLLayer.prototype.getViewport = function(view) {};
/**
* @param {XRSession} session
* @return {number}
*/
XRWebGLLayer.prototype.getNativeFramebufferScaleFactor = function (session) {};
/**
* @constructor
*/
function WebGLRenderingContextBase() {};
/**
* @return {Promise<void>}
*/
WebGLRenderingContextBase.prototype.makeXRCompatible = function () {};
/**
* @constructor
*/
function XRInputSourcesChangeEvent() {};
/**
* @type {Array<XRInputSource>}
*/
XRInputSourcesChangeEvent.prototype.added;
/**
* @type {Array<XRInputSource>}
*/
XRInputSourcesChangeEvent.prototype.removed;
/**
* @constructor
*/
function XRInputSourceEvent() {};
/**
* @type {XRFrame}
*/
XRInputSourceEvent.prototype.frame;
/**
* @type {XRInputSource}
*/
XRInputSourceEvent.prototype.inputSource;
/**
* @constructor
*/
function XRInputSource() {};
/**
* @type {Gamepad}
*/
XRInputSource.prototype.gamepad;
/**
* @type {XRSpace}
*/
XRInputSource.prototype.gripSpace;
/**
* @type {string}
*/
XRInputSource.prototype.handedness;
/**
* @type {string}
*/
XRInputSource.prototype.profiles;
/**
* @type {string}
*/
XRInputSource.prototype.targetRayMode;
/**
* @type {XRSpace}
*/
XRInputSource.prototype.targetRaySpace;
/**
* @constructor
*/
function XRSpace() {};
/**
* @constructor
*/
function XRPose() {};
/**
* @type {XRRigidTransform}
*/
XRPose.prototype.transform;
/**
* @type {boolean}
*/
XRPose.prototype.emulatedPosition;

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/*************************************************************************/
/* register_types.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2021 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 "register_types.h"
#include "webxr_interface.h"
#include "webxr_interface_js.h"
void register_webxr_types() {
ClassDB::register_virtual_class<WebXRInterface>();
#ifdef JAVASCRIPT_ENABLED
Ref<WebXRInterfaceJS> webxr;
webxr.instance();
XRServer::get_singleton()->add_interface(webxr);
#endif
}
void unregister_webxr_types() {
}

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/*************************************************************************/
/* register_types.h */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2021 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 WEBXR_REGISTER_TYPES_H
#define WEBXR_REGISTER_TYPES_H
void register_webxr_types();
void unregister_webxr_types();
#endif // WEBXR_REGISTER_TYPES_H

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/*************************************************************************/
/* webxr_interface.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2021 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 "webxr_interface.h"
#include <stdlib.h>
void WebXRInterface::_bind_methods() {
ClassDB::bind_method(D_METHOD("is_session_supported", "session_mode"), &WebXRInterface::is_session_supported);
ClassDB::bind_method(D_METHOD("set_session_mode", "session_mode"), &WebXRInterface::set_session_mode);
ClassDB::bind_method(D_METHOD("get_session_mode"), &WebXRInterface::get_session_mode);
ClassDB::bind_method(D_METHOD("set_required_features", "required_features"), &WebXRInterface::set_required_features);
ClassDB::bind_method(D_METHOD("get_required_features"), &WebXRInterface::get_required_features);
ClassDB::bind_method(D_METHOD("set_optional_features", "optional_features"), &WebXRInterface::set_optional_features);
ClassDB::bind_method(D_METHOD("get_optional_features"), &WebXRInterface::get_optional_features);
ClassDB::bind_method(D_METHOD("get_reference_space_type"), &WebXRInterface::get_reference_space_type);
ClassDB::bind_method(D_METHOD("set_requested_reference_space_types", "requested_reference_space_types"), &WebXRInterface::set_requested_reference_space_types);
ClassDB::bind_method(D_METHOD("get_requested_reference_space_types"), &WebXRInterface::get_requested_reference_space_types);
ClassDB::bind_method(D_METHOD("get_controller"), &WebXRInterface::get_controller);
ClassDB::bind_method(D_METHOD("get_visibility_state"), &WebXRInterface::get_visibility_state);
ClassDB::bind_method(D_METHOD("get_bounds_geometry"), &WebXRInterface::get_bounds_geometry);
ADD_PROPERTY(PropertyInfo(Variant::STRING, "session_mode", PROPERTY_HINT_NONE), "set_session_mode", "get_session_mode");
ADD_PROPERTY(PropertyInfo(Variant::STRING, "required_features", PROPERTY_HINT_NONE), "set_required_features", "get_required_features");
ADD_PROPERTY(PropertyInfo(Variant::STRING, "optional_features", PROPERTY_HINT_NONE), "set_optional_features", "get_optional_features");
ADD_PROPERTY(PropertyInfo(Variant::STRING, "requested_reference_space_types", PROPERTY_HINT_NONE), "set_requested_reference_space_types", "get_requested_reference_space_types");
ADD_PROPERTY(PropertyInfo(Variant::STRING, "reference_space_type", PROPERTY_HINT_NONE), "", "get_reference_space_type");
ADD_PROPERTY(PropertyInfo(Variant::STRING, "visibility_state", PROPERTY_HINT_NONE), "", "get_visibility_state");
ADD_PROPERTY(PropertyInfo(Variant::PACKED_VECTOR3_ARRAY, "bounds_geometry", PROPERTY_HINT_NONE), "", "get_bounds_geometry");
ADD_SIGNAL(MethodInfo("session_supported", PropertyInfo(Variant::STRING, "session_mode"), PropertyInfo(Variant::BOOL, "supported")));
ADD_SIGNAL(MethodInfo("session_started"));
ADD_SIGNAL(MethodInfo("session_ended"));
ADD_SIGNAL(MethodInfo("session_failed", PropertyInfo(Variant::STRING, "message")));
ADD_SIGNAL(MethodInfo("selectstart", PropertyInfo(Variant::INT, "controller_id")));
ADD_SIGNAL(MethodInfo("select", PropertyInfo(Variant::INT, "controller_id")));
ADD_SIGNAL(MethodInfo("selectend", PropertyInfo(Variant::INT, "controller_id")));
ADD_SIGNAL(MethodInfo("squeezestart", PropertyInfo(Variant::INT, "controller_id")));
ADD_SIGNAL(MethodInfo("squeeze", PropertyInfo(Variant::INT, "controller_id")));
ADD_SIGNAL(MethodInfo("squeezeend", PropertyInfo(Variant::INT, "controller_id")));
ADD_SIGNAL(MethodInfo("visibility_state_changed"));
ADD_SIGNAL(MethodInfo("reference_space_reset"));
}

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/*************************************************************************/
/* webxr_interface.h */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2021 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 WEBXR_INTERFACE_H
#define WEBXR_INTERFACE_H
#include "servers/xr/xr_interface.h"
#include "servers/xr/xr_positional_tracker.h"
/**
@author David Snopek <david.snopek@snopekgames.com>
The WebXR interface is a VR/AR interface that can be used on the web.
*/
class WebXRInterface : public XRInterface {
GDCLASS(WebXRInterface, XRInterface);
protected:
static void _bind_methods();
public:
virtual void is_session_supported(const String &p_session_mode) = 0;
virtual void set_session_mode(String p_session_mode) = 0;
virtual String get_session_mode() const = 0;
virtual void set_required_features(String p_required_features) = 0;
virtual String get_required_features() const = 0;
virtual void set_optional_features(String p_optional_features) = 0;
virtual String get_optional_features() const = 0;
virtual void set_requested_reference_space_types(String p_requested_reference_space_types) = 0;
virtual String get_requested_reference_space_types() const = 0;
virtual String get_reference_space_type() const = 0;
virtual XRPositionalTracker *get_controller(int p_controller_id) const = 0;
virtual String get_visibility_state() const = 0;
virtual PackedVector3Array get_bounds_geometry() const = 0;
};
#endif // WEBXR_INTERFACE_H

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/*************************************************************************/
/* webxr_interface_js.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2021 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. */
/*************************************************************************/
#ifdef JAVASCRIPT_ENABLED
#include "webxr_interface_js.h"
#include "core/input/input.h"
#include "core/os/os.h"
#include "emscripten.h"
#include "godot_webxr.h"
#include <stdlib.h>
void _emwebxr_on_session_supported(char *p_session_mode, int p_supported) {
XRServer *xr_server = XRServer::get_singleton();
ERR_FAIL_NULL(xr_server);
Ref<XRInterface> interface = xr_server->find_interface("WebXR");
ERR_FAIL_COND(interface.is_null());
String session_mode = String(p_session_mode);
interface->emit_signal("session_supported", session_mode, p_supported ? true : false);
}
void _emwebxr_on_session_started(char *p_reference_space_type) {
XRServer *xr_server = XRServer::get_singleton();
ERR_FAIL_NULL(xr_server);
Ref<XRInterface> interface = xr_server->find_interface("WebXR");
ERR_FAIL_COND(interface.is_null());
String reference_space_type = String(p_reference_space_type);
((WebXRInterfaceJS *)interface.ptr())->_set_reference_space_type(reference_space_type);
interface->emit_signal("session_started");
}
void _emwebxr_on_session_ended() {
XRServer *xr_server = XRServer::get_singleton();
ERR_FAIL_NULL(xr_server);
Ref<XRInterface> interface = xr_server->find_interface("WebXR");
ERR_FAIL_COND(interface.is_null());
interface->uninitialize();
interface->emit_signal("session_ended");
}
void _emwebxr_on_session_failed(char *p_message) {
XRServer *xr_server = XRServer::get_singleton();
ERR_FAIL_NULL(xr_server);
Ref<XRInterface> interface = xr_server->find_interface("WebXR");
ERR_FAIL_COND(interface.is_null());
String message = String(p_message);
interface->emit_signal("session_failed", message);
}
void _emwebxr_on_controller_changed() {
XRServer *xr_server = XRServer::get_singleton();
ERR_FAIL_NULL(xr_server);
Ref<XRInterface> interface = xr_server->find_interface("WebXR");
ERR_FAIL_COND(interface.is_null());
((WebXRInterfaceJS *)interface.ptr())->_on_controller_changed();
}
extern "C" EMSCRIPTEN_KEEPALIVE void _emwebxr_on_input_event(char *p_signal_name, int p_input_source) {
XRServer *xr_server = XRServer::get_singleton();
ERR_FAIL_NULL(xr_server);
Ref<XRInterface> interface = xr_server->find_interface("WebXR");
ERR_FAIL_COND(interface.is_null());
StringName signal_name = StringName(p_signal_name);
interface->emit_signal(signal_name, p_input_source + 1);
}
extern "C" EMSCRIPTEN_KEEPALIVE void _emwebxr_on_simple_event(char *p_signal_name) {
XRServer *xr_server = XRServer::get_singleton();
ERR_FAIL_NULL(xr_server);
Ref<XRInterface> interface = xr_server->find_interface("WebXR");
ERR_FAIL_COND(interface.is_null());
StringName signal_name = StringName(p_signal_name);
interface->emit_signal(signal_name);
}
void WebXRInterfaceJS::is_session_supported(const String &p_session_mode) {
godot_webxr_is_session_supported(p_session_mode.utf8().get_data(), &_emwebxr_on_session_supported);
}
void WebXRInterfaceJS::set_session_mode(String p_session_mode) {
session_mode = p_session_mode;
}
String WebXRInterfaceJS::get_session_mode() const {
return session_mode;
}
void WebXRInterfaceJS::set_required_features(String p_required_features) {
required_features = p_required_features;
}
String WebXRInterfaceJS::get_required_features() const {
return required_features;
}
void WebXRInterfaceJS::set_optional_features(String p_optional_features) {
optional_features = p_optional_features;
}
String WebXRInterfaceJS::get_optional_features() const {
return optional_features;
}
void WebXRInterfaceJS::set_requested_reference_space_types(String p_requested_reference_space_types) {
requested_reference_space_types = p_requested_reference_space_types;
}
String WebXRInterfaceJS::get_requested_reference_space_types() const {
return requested_reference_space_types;
}
void WebXRInterfaceJS::_set_reference_space_type(String p_reference_space_type) {
reference_space_type = p_reference_space_type;
}
String WebXRInterfaceJS::get_reference_space_type() const {
return reference_space_type;
}
XRPositionalTracker *WebXRInterfaceJS::get_controller(int p_controller_id) const {
XRServer *xr_server = XRServer::get_singleton();
ERR_FAIL_NULL_V(xr_server, nullptr);
return xr_server->find_by_type_and_id(XRServer::TRACKER_CONTROLLER, p_controller_id);
}
String WebXRInterfaceJS::get_visibility_state() const {
char *c_str = godot_webxr_get_visibility_state();
if (c_str) {
String visibility_state = String(c_str);
free(c_str);
return visibility_state;
}
return String();
}
PackedVector3Array WebXRInterfaceJS::get_bounds_geometry() const {
PackedVector3Array ret;
int *js_bounds = godot_webxr_get_bounds_geometry();
if (js_bounds) {
ret.resize(js_bounds[0]);
for (int i = 0; i < js_bounds[0]; i++) {
float *js_vector3 = ((float *)js_bounds) + (i * 3) + 1;
ret.set(i, Vector3(js_vector3[0], js_vector3[1], js_vector3[2]));
}
free(js_bounds);
}
return ret;
}
StringName WebXRInterfaceJS::get_name() const {
return "WebXR";
};
int WebXRInterfaceJS::get_capabilities() const {
return XRInterface::XR_STEREO;
};
bool WebXRInterfaceJS::is_stereo() {
// @todo WebXR can be mono! So, how do we know? Count the views in the frame?
return true;
};
bool WebXRInterfaceJS::is_initialized() const {
return (initialized);
};
bool WebXRInterfaceJS::initialize() {
XRServer *xr_server = XRServer::get_singleton();
ERR_FAIL_NULL_V(xr_server, false);
if (!initialized) {
if (!godot_webxr_is_supported()) {
return false;
}
if (requested_reference_space_types.size() == 0) {
return false;
}
// make this our primary interface
xr_server->set_primary_interface(this);
initialized = true;
godot_webxr_initialize(
session_mode.utf8().get_data(),
required_features.utf8().get_data(),
optional_features.utf8().get_data(),
requested_reference_space_types.utf8().get_data(),
&_emwebxr_on_session_started,
&_emwebxr_on_session_ended,
&_emwebxr_on_session_failed,
&_emwebxr_on_controller_changed,
&_emwebxr_on_input_event,
&_emwebxr_on_simple_event);
};
return true;
};
void WebXRInterfaceJS::uninitialize() {
if (initialized) {
XRServer *xr_server = XRServer::get_singleton();
if (xr_server != NULL) {
// no longer our primary interface
xr_server->clear_primary_interface_if(this);
}
godot_webxr_uninitialize();
reference_space_type = "";
initialized = false;
};
};
Transform WebXRInterfaceJS::_js_matrix_to_transform(float *p_js_matrix) {
Transform transform;
transform.basis.elements[0].x = p_js_matrix[0];
transform.basis.elements[1].x = p_js_matrix[1];
transform.basis.elements[2].x = p_js_matrix[2];
transform.basis.elements[0].y = p_js_matrix[4];
transform.basis.elements[1].y = p_js_matrix[5];
transform.basis.elements[2].y = p_js_matrix[6];
transform.basis.elements[0].z = p_js_matrix[8];
transform.basis.elements[1].z = p_js_matrix[9];
transform.basis.elements[2].z = p_js_matrix[10];
transform.origin.x = p_js_matrix[12];
transform.origin.y = p_js_matrix[13];
transform.origin.z = p_js_matrix[14];
return transform;
}
Size2 WebXRInterfaceJS::get_render_targetsize() {
Size2 target_size;
int *js_size = godot_webxr_get_render_targetsize();
if (!initialized || js_size == nullptr) {
// As a default, use half the window size.
target_size = DisplayServer::get_singleton()->window_get_size();
target_size.width /= 2.0;
return target_size;
}
target_size.width = js_size[0];
target_size.height = js_size[1];
free(js_size);
return target_size;
};
Transform WebXRInterfaceJS::get_transform_for_eye(XRInterface::Eyes p_eye, const Transform &p_cam_transform) {
Transform transform_for_eye;
XRServer *xr_server = XRServer::get_singleton();
ERR_FAIL_NULL_V(xr_server, transform_for_eye);
float *js_matrix = godot_webxr_get_transform_for_eye(p_eye);
if (!initialized || js_matrix == nullptr) {
transform_for_eye = p_cam_transform;
return transform_for_eye;
}
transform_for_eye = _js_matrix_to_transform(js_matrix);
free(js_matrix);
return p_cam_transform * xr_server->get_reference_frame() * transform_for_eye;
};
CameraMatrix WebXRInterfaceJS::get_projection_for_eye(XRInterface::Eyes p_eye, real_t p_aspect, real_t p_z_near, real_t p_z_far) {
CameraMatrix eye;
float *js_matrix = godot_webxr_get_projection_for_eye(p_eye);
if (!initialized || js_matrix == nullptr) {
return eye;
}
int k = 0;
for (int i = 0; i < 4; i++) {
for (int j = 0; j < 4; j++) {
eye.matrix[i][j] = js_matrix[k++];
}
}
free(js_matrix);
// Copied from godot_oculus_mobile's ovr_mobile_session.cpp
eye.matrix[2][2] = -(p_z_far + p_z_near) / (p_z_far - p_z_near);
eye.matrix[3][2] = -(2.0f * p_z_far * p_z_near) / (p_z_far - p_z_near);
return eye;
}
unsigned int WebXRInterfaceJS::get_external_texture_for_eye(XRInterface::Eyes p_eye) {
if (!initialized) {
return 0;
}
return godot_webxr_get_external_texture_for_eye(p_eye);
}
void WebXRInterfaceJS::commit_for_eye(XRInterface::Eyes p_eye, RID p_render_target, const Rect2 &p_screen_rect) {
if (!initialized) {
return;
}
godot_webxr_commit_for_eye(p_eye);
};
void WebXRInterfaceJS::process() {
if (initialized) {
godot_webxr_sample_controller_data();
int controller_count = godot_webxr_get_controller_count();
if (controller_count == 0) {
return;
}
for (int i = 0; i < controller_count; i++) {
_update_tracker(i);
}
};
};
void WebXRInterfaceJS::_update_tracker(int p_controller_id) {
XRServer *xr_server = XRServer::get_singleton();
ERR_FAIL_NULL(xr_server);
XRPositionalTracker *tracker = xr_server->find_by_type_and_id(XRServer::TRACKER_CONTROLLER, p_controller_id + 1);
if (godot_webxr_is_controller_connected(p_controller_id)) {
if (tracker == nullptr) {
tracker = memnew(XRPositionalTracker);
tracker->set_type(XRServer::TRACKER_CONTROLLER);
// Controller id's 0 and 1 are always the left and right hands.
if (p_controller_id < 2) {
tracker->set_name(p_controller_id == 0 ? "Left" : "Right");
tracker->set_hand(p_controller_id == 0 ? XRPositionalTracker::TRACKER_LEFT_HAND : XRPositionalTracker::TRACKER_RIGHT_HAND);
}
// Use the ids we're giving to our "virtual" gamepads.
tracker->set_joy_id(p_controller_id + 100);
xr_server->add_tracker(tracker);
}
Input *input = Input::get_singleton();
float *tracker_matrix = godot_webxr_get_controller_transform(p_controller_id);
if (tracker_matrix) {
Transform transform = _js_matrix_to_transform(tracker_matrix);
tracker->set_position(transform.origin);
tracker->set_orientation(transform.basis);
free(tracker_matrix);
}
int *buttons = godot_webxr_get_controller_buttons(p_controller_id);
if (buttons) {
for (int i = 0; i < buttons[0]; i++) {
input->joy_button(p_controller_id + 100, i, *((float *)buttons + (i + 1)));
}
free(buttons);
}
int *axes = godot_webxr_get_controller_axes(p_controller_id);
if (axes) {
for (int i = 0; i < axes[0]; i++) {
Input::JoyAxis joy_axis;
joy_axis.min = -1;
joy_axis.value = *((float *)axes + (i + 1));
input->joy_axis(p_controller_id + 100, i, joy_axis);
}
free(axes);
}
} else if (tracker) {
xr_server->remove_tracker(tracker);
}
}
void WebXRInterfaceJS::_on_controller_changed() {
// Register "virtual" gamepads with Godot for the ones we get from WebXR.
godot_webxr_sample_controller_data();
for (int i = 0; i < 2; i++) {
bool controller_connected = godot_webxr_is_controller_connected(i);
if (controllers_state[i] != controller_connected) {
Input::get_singleton()->joy_connection_changed(i + 100, controller_connected, i == 0 ? "Left" : "Right", "");
controllers_state[i] = controller_connected;
}
}
}
void WebXRInterfaceJS::notification(int p_what) {
// Nothing to do here.
}
WebXRInterfaceJS::WebXRInterfaceJS() {
initialized = false;
session_mode = "inline";
requested_reference_space_types = "local";
};
WebXRInterfaceJS::~WebXRInterfaceJS() {
// and make sure we cleanup if we haven't already
if (initialized) {
uninitialize();
};
};
#endif // JAVASCRIPT_ENABLED

103
modules/webxr/webxr_interface_js.h Normal file
View File

@ -0,0 +1,103 @@
/*************************************************************************/
/* webxr_interface_js.h */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* https://godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2021 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 WEBXR_INTERFACE_JS_H
#define WEBXR_INTERFACE_JS_H
#ifdef JAVASCRIPT_ENABLED
#include "webxr_interface.h"
/**
@author David Snopek <david.snopek@snopekgames.com>
The WebXR interface is a VR/AR interface that can be used on the web.
*/
class WebXRInterfaceJS : public WebXRInterface {
GDCLASS(WebXRInterfaceJS, WebXRInterface);
private:
bool initialized;
// @todo Should these really use enums instead of strings?
String session_mode;
String required_features;
String optional_features;
String requested_reference_space_types;
String reference_space_type;
bool controllers_state[2];
Transform _js_matrix_to_transform(float *p_js_matrix);
void _update_tracker(int p_controller_id);
public:
virtual void is_session_supported(const String &p_session_mode) override;
virtual void set_session_mode(String p_session_mode) override;
virtual String get_session_mode() const override;
virtual void set_required_features(String p_required_features) override;
virtual String get_required_features() const override;
virtual void set_optional_features(String p_optional_features) override;
virtual String get_optional_features() const override;
virtual void set_requested_reference_space_types(String p_requested_reference_space_types) override;
virtual String get_requested_reference_space_types() const override;
void _set_reference_space_type(String p_reference_space_type);
virtual String get_reference_space_type() const override;
virtual XRPositionalTracker *get_controller(int p_controller_id) const override;
virtual String get_visibility_state() const override;
virtual PackedVector3Array get_bounds_geometry() const override;
virtual StringName get_name() const override;
virtual int get_capabilities() const override;
virtual bool is_initialized() const override;
virtual bool initialize() override;
virtual void uninitialize() override;
virtual Size2 get_render_targetsize() override;
virtual bool is_stereo() override;
virtual Transform get_transform_for_eye(XRInterface::Eyes p_eye, const Transform &p_cam_transform) override;
virtual CameraMatrix get_projection_for_eye(XRInterface::Eyes p_eye, real_t p_aspect, real_t p_z_near, real_t p_z_far) override;
virtual unsigned int get_external_texture_for_eye(XRInterface::Eyes p_eye) override;
virtual void commit_for_eye(XRInterface::Eyes p_eye, RID p_render_target, const Rect2 &p_screen_rect) override;
virtual void process() override;
virtual void notification(int p_what) override;
void _on_controller_changed();
WebXRInterfaceJS();
~WebXRInterfaceJS();
};
#endif // JAVASCRIPT_ENABLED
#endif // WEBXR_INTERFACE_JS_H

3
platform/javascript/.eslintrc.libs.js
View File

@ -18,5 +18,8 @@ module.exports = {
"GodotRuntime": true, "GodotRuntime": true,
"GodotFS": true, "GodotFS": true,
"IDHandler": true, "IDHandler": true,
"Browser": true,
"GL": true,
"XRWebGLLayer": true,
}, },
}; };

10
platform/javascript/SCsub
View File

@ -67,6 +67,16 @@ else:
sys_env.Depends(build[0], sys_env["JS_LIBS"]) sys_env.Depends(build[0], sys_env["JS_LIBS"])
if "JS_PRE" in env:
for js in env["JS_PRE"]:
env.Append(LINKFLAGS=["--pre-js", env.File(js).path])
env.Depends(build, env["JS_PRE"])
if "JS_EXTERNS" in env:
for ext in env["JS_EXTERNS"]:
env["ENV"]["EMCC_CLOSURE_ARGS"] += " --externs " + ext.path
env.Depends(build, env["JS_EXTERNS"])
engine = [ engine = [
"js/engine/preloader.js", "js/engine/preloader.js",
"js/engine/utils.js", "js/engine/utils.js",

4
platform/javascript/detect.py
View File

@ -1,7 +1,7 @@
import os import os
import sys import sys
from emscripten_helpers import run_closure_compiler, create_engine_file, add_js_libraries from emscripten_helpers import run_closure_compiler, create_engine_file, add_js_libraries, add_js_pre, add_js_externs
from methods import get_compiler_version from methods import get_compiler_version
from SCons.Util import WhereIs from SCons.Util import WhereIs
@ -133,6 +133,8 @@ def configure(env):
# Add helper method for adding libraries. # Add helper method for adding libraries.
env.AddMethod(add_js_libraries, "AddJSLibraries") env.AddMethod(add_js_libraries, "AddJSLibraries")
env.AddMethod(add_js_pre, "AddJSPre")
env.AddMethod(add_js_externs, "AddJSExterns")
# Add method that joins/compiles our Engine files. # Add method that joins/compiles our Engine files.
env.AddMethod(create_engine_file, "CreateEngineFile") env.AddMethod(create_engine_file, "CreateEngineFile")

12
platform/javascript/emscripten_helpers.py
View File

@ -25,3 +25,15 @@ def add_js_libraries(env, libraries):
if "JS_LIBS" not in env: if "JS_LIBS" not in env:
env["JS_LIBS"] = [] env["JS_LIBS"] = []
env.Append(JS_LIBS=env.File(libraries)) env.Append(JS_LIBS=env.File(libraries))
def add_js_pre(env, js_pre):
if "JS_PRE" not in env:
env["JS_PRE"] = []
env.Append(JS_PRE=env.File(js_pre))
def add_js_externs(env, externs):
if "JS_EXTERNS" not in env:
env["JS_EXTERNS"] = []
env.Append(JS_EXTERNS=env.File(externs))