tests/webgl2-multisample.html - external/github.com/immersive-web/webxr-samples - Git at Google

 <!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>WebGL 2.0 Multisample</title>

     <script src='../js/third-party/dat.gui.min.js'></script>
   </head>
   <body>
     <header>
       <details id='details-panel' open>
         <summary>WebGL 2.0 Multisample</summary>
         <p>
           Tests that applications that use WebGL 2.0 Multisampled Renderbuffers
           can succesfully blit the result to an XRWebGLLayer.
           <a class="back" href="./">Back</a>
         </p>
       </details>
     </header>
     <script type="module">
       import {WebXRSampleApp} from '../js/webxr-sample-app.js';
       import {createWebGLContext} from '../js/render/core/renderer.js';
       import {Gltf2Node} from '../js/render/nodes/gltf2.js';
       import {SkyboxNode} from '../js/render/nodes/skybox.js';
       import {WebXRView} from '../js/render/scenes/scene.js';
       import {QueryArgs} from '../js/util/query-args.js';

       // If requested, use the polyfill to provide support for mobile devices
       // and devices which only support WebVR.
       import WebXRPolyfill from '../js/third-party/webxr-polyfill/build/webxr-polyfill.module.js';
       if (QueryArgs.getBool('usePolyfill', true)) {
         let polyfill = new WebXRPolyfill();
       }

       // WebXR sample app setup
       class CustomWebXRSampleApp extends WebXRSampleApp {
         onCreateGL() {
           const gl = createWebGLContext({
             webgl2: true,
             antialias: false, // Antialiasing will be handled manually.
             xrCompatible: true
           });
           document.body.appendChild(gl.canvas);

           this.multisampleFramebuffer = gl.createFramebuffer();

           this.renderbufferWidth = 1024;
           this.renderbufferHeight = 1024;
           this.colorRenderbuffer = gl.createRenderbuffer();
           gl.bindRenderbuffer(gl.RENDERBUFFER, this.colorRenderbuffer);
           gl.renderbufferStorageMultisample(gl.RENDERBUFFER, 4, gl.RGBA8, this.renderbufferWidth, this.renderbufferHeight);

           this.depthRenderbuffer = gl.createRenderbuffer();
           gl.bindRenderbuffer(gl.RENDERBUFFER, this.depthRenderbuffer);
           gl.renderbufferStorageMultisample(gl.RENDERBUFFER, 4, gl.DEPTH_COMPONENT16, this.renderbufferWidth, this.renderbufferHeight);

           gl.bindFramebuffer(gl.FRAMEBUFFER, this.multisampleFramebuffer);
           gl.framebufferRenderbuffer(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.RENDERBUFFER, this.colorRenderbuffer);
           gl.framebufferRenderbuffer(gl.FRAMEBUFFER, gl.DEPTH_ATTACHMENT, gl.RENDERBUFFER, this.depthRenderbuffer);

           return gl;
         }

         onCreateXRLayer(session) {
           // Don't need antialiasing or depth, since we're handling that in our own framebuffer.
           return new XRWebGLLayer(session, this.gl, { antialias: false, depth: false });
         }

         onXRFrame(time, frame, refSpace) {
           let pose = frame.getViewerPose(refSpace);
           this.scene.updateInputSources(frame, refSpace);
           if (!pose || !this.renderer) { return; }

           let gl = this.renderer.gl;
           let session = frame.session;
           // Assumed to be a XRWebGLLayer for now.
           let layer = session.renderState.baseLayer;

           // Check to see if we need to resize the renderbuffer
           if (layer.framebufferWidth != this.renderbufferWidth ||
               layer.framebufferHeight != this.renderbufferHeight) {
             this.renderbufferWidth = layer.framebufferWidth;
             this.renderbufferHeight = layer.framebufferHeight;

             gl.bindRenderbuffer(gl.RENDERBUFFER, this.colorRenderbuffer);
             gl.renderbufferStorageMultisample(gl.RENDERBUFFER, 4, gl.RGBA8, this.renderbufferWidth, this.renderbufferHeight);

             gl.bindRenderbuffer(gl.RENDERBUFFER, this.depthRenderbuffer);
             gl.renderbufferStorageMultisample(gl.RENDERBUFFER, 4, gl.DEPTH_COMPONENT16, this.renderbufferWidth, this.renderbufferHeight);
           }

           // Rather than binding the layer's framebuffer like usual, bind a framebuffer using a
           // multisampled renderbuffer as the color attachment.
           gl.bindFramebuffer(gl.FRAMEBUFFER, this.multisampleFramebuffer);

           gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);

           let views = [];
           for (let view of pose.views) {
             views.push(new WebXRView(view, layer));
           }

           this.scene.drawViewArray(views);

           // Now bind the layer's framebuffer and blit the multisampled framebuffer over to it.
           gl.bindFramebuffer(gl.READ_FRAMEBUFFER, this.multisampleFramebuffer);
           gl.bindFramebuffer(gl.DRAW_FRAMEBUFFER, layer.framebuffer);

           gl.blitFramebuffer(0, 0, this.renderbufferWidth, this.renderbufferHeight,
                              0, 0, this.renderbufferWidth, this.renderbufferHeight,
                              gl.COLOR_BUFFER_BIT, gl.LINEAR);
         }
       };

       let app = new CustomWebXRSampleApp();
       document.querySelector('header').appendChild(app.xrButton.domElement);

       app.scene.addNode(new Gltf2Node({url: '../media/gltf/space/space.gltf'}));
       app.scene.addNode(new SkyboxNode({url: '../media/textures/milky-way-4k.png'}));

       // Start the XR application.
       app.run();
     </script>
   </body>
 </html>
	<!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>WebGL 2.0 Multisample</title>

	<script src='../js/third-party/dat.gui.min.js'></script>
	</head>
	<body>
	<header>
	<details id='details-panel' open>
	<summary>WebGL 2.0 Multisample</summary>
	<p>
	Tests that applications that use WebGL 2.0 Multisampled Renderbuffers
	can succesfully blit the result to an XRWebGLLayer.
	<a class="back" href="./">Back</a>
	</p>
	</details>
	</header>
	<script type="module">
	import {WebXRSampleApp} from '../js/webxr-sample-app.js';
	import {createWebGLContext} from '../js/render/core/renderer.js';
	import {Gltf2Node} from '../js/render/nodes/gltf2.js';
	import {SkyboxNode} from '../js/render/nodes/skybox.js';
	import {WebXRView} from '../js/render/scenes/scene.js';
	import {QueryArgs} from '../js/util/query-args.js';

	// If requested, use the polyfill to provide support for mobile devices
	// and devices which only support WebVR.
	import WebXRPolyfill from '../js/third-party/webxr-polyfill/build/webxr-polyfill.module.js';
	if (QueryArgs.getBool('usePolyfill', true)) {
	let polyfill = new WebXRPolyfill();
	}

	// WebXR sample app setup
	class CustomWebXRSampleApp extends WebXRSampleApp {
	onCreateGL() {
	const gl = createWebGLContext({
	webgl2: true,
	antialias: false, // Antialiasing will be handled manually.
	xrCompatible: true
	});
	document.body.appendChild(gl.canvas);

	this.multisampleFramebuffer = gl.createFramebuffer();

	this.renderbufferWidth = 1024;
	this.renderbufferHeight = 1024;
	this.colorRenderbuffer = gl.createRenderbuffer();
	gl.bindRenderbuffer(gl.RENDERBUFFER, this.colorRenderbuffer);
	gl.renderbufferStorageMultisample(gl.RENDERBUFFER, 4, gl.RGBA8, this.renderbufferWidth, this.renderbufferHeight);

	this.depthRenderbuffer = gl.createRenderbuffer();
	gl.bindRenderbuffer(gl.RENDERBUFFER, this.depthRenderbuffer);
	gl.renderbufferStorageMultisample(gl.RENDERBUFFER, 4, gl.DEPTH_COMPONENT16, this.renderbufferWidth, this.renderbufferHeight);

	gl.bindFramebuffer(gl.FRAMEBUFFER, this.multisampleFramebuffer);
	gl.framebufferRenderbuffer(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.RENDERBUFFER, this.colorRenderbuffer);
	gl.framebufferRenderbuffer(gl.FRAMEBUFFER, gl.DEPTH_ATTACHMENT, gl.RENDERBUFFER, this.depthRenderbuffer);

	return gl;
	}

	onCreateXRLayer(session) {
	// Don't need antialiasing or depth, since we're handling that in our own framebuffer.
	return new XRWebGLLayer(session, this.gl, { antialias: false, depth: false });
	}

	onXRFrame(time, frame, refSpace) {
	let pose = frame.getViewerPose(refSpace);
	this.scene.updateInputSources(frame, refSpace);
	if (!pose \|\| !this.renderer) { return; }

	let gl = this.renderer.gl;
	let session = frame.session;
	// Assumed to be a XRWebGLLayer for now.
	let layer = session.renderState.baseLayer;

	// Check to see if we need to resize the renderbuffer
	if (layer.framebufferWidth != this.renderbufferWidth \|\|
	layer.framebufferHeight != this.renderbufferHeight) {
	this.renderbufferWidth = layer.framebufferWidth;
	this.renderbufferHeight = layer.framebufferHeight;

	gl.bindRenderbuffer(gl.RENDERBUFFER, this.colorRenderbuffer);
	gl.renderbufferStorageMultisample(gl.RENDERBUFFER, 4, gl.RGBA8, this.renderbufferWidth, this.renderbufferHeight);

	gl.bindRenderbuffer(gl.RENDERBUFFER, this.depthRenderbuffer);
	gl.renderbufferStorageMultisample(gl.RENDERBUFFER, 4, gl.DEPTH_COMPONENT16, this.renderbufferWidth, this.renderbufferHeight);
	}

	// Rather than binding the layer's framebuffer like usual, bind a framebuffer using a
	// multisampled renderbuffer as the color attachment.
	gl.bindFramebuffer(gl.FRAMEBUFFER, this.multisampleFramebuffer);

	gl.clear(gl.COLOR_BUFFER_BIT \| gl.DEPTH_BUFFER_BIT);

	let views = [];
	for (let view of pose.views) {
	views.push(new WebXRView(view, layer));
	}

	this.scene.drawViewArray(views);

	// Now bind the layer's framebuffer and blit the multisampled framebuffer over to it.
	gl.bindFramebuffer(gl.READ_FRAMEBUFFER, this.multisampleFramebuffer);
	gl.bindFramebuffer(gl.DRAW_FRAMEBUFFER, layer.framebuffer);

	gl.blitFramebuffer(0, 0, this.renderbufferWidth, this.renderbufferHeight,
	0, 0, this.renderbufferWidth, this.renderbufferHeight,
	gl.COLOR_BUFFER_BIT, gl.LINEAR);
	}
	};

	let app = new CustomWebXRSampleApp();
	document.querySelector('header').appendChild(app.xrButton.domElement);

	app.scene.addNode(new Gltf2Node({url: '../media/gltf/space/space.gltf'}));
	app.scene.addNode(new SkyboxNode({url: '../media/textures/milky-way-4k.png'}));

	// Start the XR application.
	app.run();
	</script>
	</body>
	</html>