-
Notifications
You must be signed in to change notification settings - Fork 6
/
Copy pathdom-layer.html
286 lines (252 loc) · 10.7 KB
/
dom-layer.html
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
<!doctype html>
<!--
Copyright 2020 The Immersive Web Community Group
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.
-->
<html>
<head>
<meta charset='utf-8'>
<meta name='viewport' content='width=device-width, initial-scale=1, user-scalable=no'>
<meta name='mobile-web-app-capable' content='yes'>
<meta name='apple-mobile-web-app-capable' content='yes'>
<link rel='icon' type='image/png' sizes='32x32' href='favicon-32x32.png'>
<link rel='icon' type='image/png' sizes='96x96' href='favicon-96x96.png'>
<link rel='stylesheet' href='css/common.css'>
<title>Multilayer</title>
<script src="js/wglu/wglu-program.js"></script>
<script src="js/stereo-util.js"></script>
</head>
<body>
<header>
<details open>
<summary>Barebones WebXR DOM Layer</summary>
<p>
This sample demonstrates simple use of an immersive
session that shows a browser session in a quad layer.
<a class="back" href="./index.html">Back</a>
</p>
<div id="session-info"></div>
<div id="warning-zone"></div>
<button id="xr-button" class="barebones-button" disabled>XR not found</button>
</details>
</header>
<main style='text-align: center;'>
<p>Click 'Enter VR' to see content</p>
</main>
<script type="module">
// XR globals.
let xrButton = document.getElementById('xr-button');
let xrSession = null;
let xrRefSpace = null;
// WebGL scene globals.
let gl = null;
let layer = null;
let layer2= null;
let eqrlayer = null;
let eqr_texture = null;
let eqr_texture_width = 0;
let eqr_texture_height = 0;
let xrGLFactory = null;
let stereoUtil = null;
let layers_state = 0;
//
// Initialize a texture and load an image.
// When the image finished loading copy it into the texture.
//
function loadTexture(gl, url, complete_callback) {
const texture = gl.createTexture();
loadIntoTexture(gl, texture, url, complete_callback);
return texture;
}
function isPowerOf2(value) {
return (value & (value - 1)) == 0;
}
function loadIntoTexture(gl, texture, url, complete_callback) {
gl.bindTexture(gl.TEXTURE_2D, texture);
// Because images have to be download over the internet
// they might take a moment until they are ready.
// Until then put a single pixel in the texture so we can
// use it immediately. When the image has finished downloading
// we'll update the texture with the contents of the image.
const level = 0;
const internalFormat = gl.RGBA;
const width = 1;
const height = 1;
const border = 0;
const srcFormat = gl.RGBA;
const srcType = gl.UNSIGNED_BYTE;
const pixel = new Uint8Array([0, 0, 255, 255]); // opaque blue
gl.texImage2D(gl.TEXTURE_2D, level, internalFormat,
width, height, border, srcFormat, srcType,
pixel);
const image = new Image();
image.onload = function() {
gl.bindTexture(gl.TEXTURE_2D, texture);
gl.pixelStorei(gl.UNPACK_FLIP_Y_WEBGL, true);
gl.texImage2D(gl.TEXTURE_2D, level, internalFormat,
srcFormat, srcType, image);
// WebGL1 has different requirements for power of 2 images
// vs non power of 2 images so check if the image is a
// power of 2 in both dimensions.
if (isPowerOf2(image.width) && isPowerOf2(image.height)) {
// Yes, it's a power of 2. Generate mips.
gl.generateMipmap(gl.TEXTURE_2D);
//?gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR_MIPMAP_LINEAR);
//?gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR_MIPMAP_LINEAR);
} else {
// No, it's not a power of 2. Turn of mips and set
// wrapping to clamp to edge
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.LINEAR);
gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR);
}
complete_callback(image.width, image.height);
};
eqr_texture_width = eqr_texture_height = undefined;
image.src = url;
}
function checkSupportedState() {
navigator.xr.isSessionSupported('immersive-vr').then((supported) => {
if (supported) {
xrButton.innerHTML = 'Enter VR';
} else {
xrButton.innerHTML = 'VR not found';
}
xrButton.disabled = !supported;
});
}
function initXR() {
if (!window.isSecureContext) {
let message = "WebXR unavailable due to insecure context";
document.getElementById("warning-zone").innerText = message;
}
if (navigator.xr) {
xrButton.addEventListener('click', onButtonClicked);
navigator.xr.addEventListener('devicechange', checkSupportedState);
checkSupportedState();
}
}
function onButtonClicked() {
if (!xrSession) {
// Ask for an optional DOM Overlay, see https://immersive-web.github.io/dom-overlays/
// Use BODY as the root element.
navigator.xr.requestSession('immersive-vr', {
requiredFeatures: ['layers'],
optionalFeatures: []
}).then(onSessionStarted, onRequestSessionError);
} else {
xrSession.end();
}
}
function onSessionStarted(session) {
xrSession = session;
xrButton.innerHTML = 'Exit VR';
// Show which type of DOM Overlay got enabled (if any)
//document.getElementById('session-info').innerHTML = 'DOM Overlay type: ' + session.domOverlayState.type;
// By listening for the 'select' event we can find out when the user has
// performed some sort of primary input action and respond to it.
session.addEventListener('select', onSelect);
session.addEventListener('end', onSessionEnded);
let canvas = document.createElement('canvas');
gl = canvas.getContext('webgl2', {
alpha: true,
antialias: false,
xrCompatible: true
});
stereoUtil = new VRStereoUtil(gl);
eqr_texture = loadTexture(gl, 'media/textures/mono_equirect_test.png', (w, h) => {
eqr_texture_width = w;
eqr_texture_height = h;
var factory = new XRDOMBinding(session);
xrGLFactory = new XRWebGLBinding(session, gl);
session.requestReferenceSpace('local').then((refSpace) => {
layer = factory.createQuadLayer({
space: refSpace,
url: "https://cabanier.github.io/WebXRLayers-samples/multi-layer-mv.html",
viewPixelWidth: 1000,
viewPixelHeight: 1000,
width : 4,
height : 2,
transform : new XRRigidTransform({x: 1.5, y: 1.0, z: -3.5}, {x: 0, y: 0, z: 0, w: 1}),
});
layer2 = factory.createCylinderLayer({
space: refSpace,
url: "https://google.com",
viewPixelWidth: 1200,
viewPixelHeight: 600,
centralAngle : 60 * Math.PI / 180,
aspectRatio : 2,
radius : 2,
transform : new XRRigidTransform({x: -4.5, y: 1.0, z: -2.5}, {x: 0, y: 0.3826834, z: 0, w: 0.9238795}),
});
eqrlayer = xrGLFactory.createEquirectLayer( {
space: refSpace,
viewPixelWidth: eqr_texture_width,
viewPixelHeight: eqr_texture_height,
layout: "mono"
});
session.updateRenderState({ layers: [ eqrlayer, layer, layer2] });
session.requestAnimationFrame(onXRFrame);
});
});
}
function onRequestSessionError(ex) {
alert("Failed to start immersive VR session.");
console.error(ex.message);
}
function onEndSession(session) {
session.end();
}
function onSessionEnded(event) {
xrSession = null;
xrButton.innerHTML = 'Enter VR';
document.getElementById('session-info').innerHTML = '';
gl = null;
}
function onSelect(ev) {
let session = ev.frame.session;
++layers_state;
layers_state = layers_state % 3;
if (layers_state == 0) {
session.updateRenderState({ layers: [ eqrlayer, layer, layer2 ] });
} else if (layers_state == 1) {
session.updateRenderState({ layers: [ eqrlayer, layer ] });
} else if (layers_state == 2) {
session.updateRenderState({ layers: [ eqrlayer ] });
}
}
function onXRFrame(t, frame) {
let session = frame.session;
session.requestAnimationFrame(onXRFrame);
if (eqrlayer && eqrlayer.needsRedraw) {
let fb = gl.createFramebuffer();
let glayer = xrGLFactory.getSubImage(eqrlayer, frame);
gl.viewport(0, 0, eqr_texture_width, eqr_texture_height);
gl.bindFramebuffer(gl.FRAMEBUFFER, fb);
gl.framebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, glayer.colorTexture, 0);
gl.disable(gl.SCISSOR_TEST);
gl.clearColor(1, 0, 0, 1);
gl.clear(gl.COLOR_BUFFER_BIT);
stereoUtil.blit(false, eqr_texture, 0, 0, 1, 1, eqr_texture_width, eqr_texture_height);
gl.bindFramebuffer(gl.FRAMEBUFFER, null);
gl.deleteFramebuffer(fb);
}
}
initXR();
</script>
</body>
</html>