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layers-overflow.html
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layers-overflow.html
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<!doctype html>
<!--
Copyright 2018 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>360 Photos</title>
</head>
<body>
<header>
<details open>
<summary>360 Photos</summary>
<p>
This sample demonstrates how a large skybox can be displayed
more efficiently with an equirect layer.
<a class="back" href="./">Back</a>
</p>
</details>
</header>
<script type="module">
import {WebXRButton} from './js/util/webxr-button.js';
import {Scene, WebXRView} from './js/render/scenes/scene.js';
import {Renderer, createWebGLContext} from './js/render/core/renderer.js';
import {Gltf2Node} from './js/render/nodes/gltf2.js';
import {SkyboxNode} from './js/render/nodes/skybox.js';
import {InlineViewerHelper} from './js/util/inline-viewer-helper.js';
import {QueryArgs} from './js/util/query-args.js';
let image_url = 'https://oculus-mp4.s3.amazonaws.com/Adam%20Savage%20Cave%20CREDIT%20ADAM%20SAVAGE%20and%20ERIC%20CHENG.jpg';
// XR globals.
let xrButton = null;
let xrImmersiveRefSpace = null;
let inlineViewerHelper = null;
// WebGL scene globals.
let gl = null;
let renderer = null;
let scene = new Scene();
let xrGLFactory = null;1
let proj_layer = null;
let equirectlayer = null;
let xrFramebuffer = null;
let glLayer = null;
let use_layer = false;
let skybox_node = new SkyboxNode({
url: image_url,
displayMode: 'mono'
});
scene.addNode(skybox_node);
let image = new Image();
let imageBitmap = null;
image.crossOrigin = "Anonymous";
let image_ready = false;
let vr_supported = false;
image.addEventListener('load', () => {
image_ready = true;
if (vr_supported && image_ready)
xrButton.enabled = true;
});
image.src = image_url;
function initXR() {
xrButton = new WebXRButton({
onRequestSession: onRequestSession,
onEndSession: onEndSession
});
document.querySelector('header').appendChild(xrButton.domElement);
if (navigator.xr) {
navigator.xr.isSessionSupported('immersive-vr').then((supported) => {
vr_supported = true;
if (vr_supported && image_ready)
xrButton.enabled = true;
});
navigator.xr.requestSession('inline').then(onSessionStarted);
}
}
function initGL() {
if (gl)
return;
gl = createWebGLContext({
webgl2: true,
xrCompatible: true
});
document.body.appendChild(gl.canvas);
function onResize() {
gl.canvas.width = gl.canvas.clientWidth * window.devicePixelRatio;
gl.canvas.height = gl.canvas.clientHeight * window.devicePixelRatio;
}
window.addEventListener('resize', onResize);
onResize();
renderer = new Renderer(gl);
scene.setRenderer(renderer);
scene.enableStats(false);
}
function onRequestSession() {
return navigator.xr.requestSession('immersive-vr', { requiredFeatures: ['layers']} ).then((session) => {
xrButton.setSession(session);
session.isImmersive = true;
onSessionStarted(session);
});
}
function onSelect(ev) {
let session = ev.frame.session;
if (!session.isImmersive)
return;
use_layer = !use_layer;
if (use_layer) {
session.updateRenderState({ layers: [ equirectlayer, proj_layer] });
scene.removeNode(skybox_node);
} else {
session.updateRenderState({ layers: [ proj_layer] });
scene.addNode(skybox_node);
}
}
function onSessionStarted(session) {
session.addEventListener('end', onSessionEnded);
session.addEventListener('select', onSelect);
initGL();
scene.inputRenderer.useProfileControllerMeshes(session);
// When rendering 360 photos/videos you want to ensure that the user's
// head is always at the center of the rendered media. Otherwise users
// with 6DoF hardware could walk towards the edges and see a very skewed
// or outright broken view of the image. To prevent that, we request a
// 'position-disabled' reference space, which suppresses any positional
// information from the headset. (As an added bonus this mode may be
// more power efficient on some hardware!)
let refSpaceType = session.isImmersive ? 'local' : 'viewer';
session.requestReferenceSpace(refSpaceType).then((refSpace) => {
if (session.isImmersive) {
xrImmersiveRefSpace = refSpace;
xrGLFactory = new XRWebGLBinding(session, gl);
proj_layer = xrGLFactory.createProjectionLayer({});
equirectlayer = xrGLFactory.createEquirectLayer({
transform: new XRRigidTransform({}, {x: 0, y: 1, z: 0, w: 0}),
space: refSpace,
isStatic: true,
viewPixelWidth: image.width,
viewPixelHeight: image.height,
upperVerticalAngle: -1.570795,
lowerVerticalAngle: 1.570795,
//mipLevels: 8,
});
xrFramebuffer = gl.createFramebuffer();
let layers = [proj_layer, equirectlayer];
for (let i = 0; i < 40; i++) {
layers.push(xrGLFactory.createProjectionLayer({space: refSpace, stencil: false}));
}
session.updateRenderState({ layers: layers });
} else {
inlineViewerHelper = new InlineViewerHelper(gl.canvas, refSpace);
glLayer = new XRWebGLLayer(session, gl);
session.updateRenderState({ baseLayer: glLayer });
}
session.requestAnimationFrame(onXRFrame);
});
}
function onEndSession(session) {
session.end();
}
function onSessionEnded(event) {
if (event.session.isImmersive) {
xrButton.setSession(null);
}
}
function onXRFrame(t, frame) {
let session = frame.session;
let refSpace = session.isImmersive ?
xrImmersiveRefSpace :
inlineViewerHelper.referenceSpace;
let pose = frame.getViewerPose(refSpace);
session.requestAnimationFrame(onXRFrame);
let glLayer = null;
if (!session.isImmersive) {
scene.startFrame();
glLayer = session.renderState.baseLayer;
gl.bindFramebuffer(gl.FRAMEBUFFER, glLayer.framebuffer);
} else if (image_ready && equirectlayer.needsRedraw) {
let glayer = xrGLFactory.getSubImage(equirectlayer, frame);
gl.bindTexture(gl.TEXTURE_2D, glayer.colorTexture);
gl.texSubImage2D(gl.TEXTURE_2D, 0, 0, 0, image.width, image.height, gl.RGBA, gl.UNSIGNED_BYTE, image);
//gl.generateMipmap(gl.GL_TEXTURE_2D);
}
if (pose) {
let views = [];
for (let view of pose.views) {
let viewport = null;
if (session.isImmersive) {
glLayer = xrGLFactory.getViewSubImage(proj_layer, view);
glLayer.framebuffer = xrFramebuffer;
viewport = glLayer.viewport;
gl.bindFramebuffer(gl.FRAMEBUFFER, xrFramebuffer);
gl.framebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, glLayer.colorTexture, 0);
gl.framebufferTexture2D(gl.FRAMEBUFFER, gl.DEPTH_ATTACHMENT, gl.TEXTURE_2D, glLayer.depthStencilTexture, 0);
gl.enable(gl.SCISSOR_TEST);
gl.enable(gl.DEPTH_TEST);
gl.scissor(viewport.x, viewport.y, viewport.width, viewport.height);
}
gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
if (session.isImmersive) {
gl.disable(gl.SCISSOR_TEST);
}
let renderView = new WebXRView(view, glLayer, viewport);
views.push(renderView);
}
scene.updateInputSources(frame, refSpace);
scene.drawViewArray(views);
}
scene.endFrame();
}
// Start the XR application.
initXR();
</script>
</body>
</html>