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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8" />
<base href="../../../" />
<script src="list.js"></script>
<script src="page.js"></script>
<link type="text/css" rel="stylesheet" href="page.css" />
</head>
<body>
[page:Loader] →
<h1>[name]</h1>
<p class="desc">
A loader for loading an [page:Image] as an [link:https://developer.mozilla.org/de/docs/Web/API/ImageBitmap ImageBitmap].
An ImageBitmap provides an asynchronous and resource efficient pathway to prepare textures for rendering in WebGL.<br/>
Unlike [page:FileLoader], [name] does not avoid multiple concurrent requests to the same URL.
</p>
<p>
Note that [page:Texture.flipY] and [page:Texture.premultiplyAlpha] with [link:https://developer.mozilla.org/de/docs/Web/API/ImageBitmap ImageBitmap] are ignored.
[link:https://developer.mozilla.org/de/docs/Web/API/ImageBitmap ImageBitmap] needs these configuration on bitmap creation
unlike regular images need them on uploading to GPU. You need to set the equivalent options via [page:ImageBitmapLoader.setOptions]
instead. Refer to [link:https://www.khronos.org/registry/webgl/specs/latest/1.0/#6.10 WebGL specification] for the detail.
</p>
<h2>Example</h2>
<p>
[example:webgl_loader_imagebitmap WebGL / loader / ImageBitmap]
</p>
<code>
// instantiate a loader
var loader = new THREE.ImageBitmapLoader();
// set options if needed
loader.setOptions( { imageOrientation: 'flipY' } );
// load a image resource
loader.load(
// resource URL
'textures/skyboxsun25degtest.png',
// onLoad callback
function ( imageBitmap ) {
var texture = new THREE.CanvasTexture( imageBitmap );
var material = new THREE.MeshBasicMaterial( { map: texture } );
},
// onProgress callback currently not supported
undefined,
// onError callback
function ( err ) {
console.log( 'An error happened' );
}
);
</code>
<h2>Constructor</h2>
<h3>[name]( [param:LoadingManager manager] )</h3>
<p>
[page:LoadingManager manager] — The [page:LoadingManager loadingManager] for the loader to use. Default is [page:LoadingManager THREE.DefaultLoadingManager].<br /><br />
Creates a new [name].
</p>
<h2>Properties</h2>
<p>See the base [page:Loader] class for common properties.</p>
<h3>[property:String options]</h3>
<p>An optional object that sets options for the internally used [link:https://developer.mozilla.org/en-US/docs/Web/API/WindowOrWorkerGlobalScope/createImageBitmap createImageBitmap] factory method. Default is *undefined*.</p>
<h2>Methods</h2>
<p>See the base [page:Loader] class for common methods.</p>
<h3>[method:null load]( [param:String url], [param:Function onLoad], [param:Function onProgress], [param:Function onError] )</h3>
<p>
[page:String url] — the path or URL to the file. This can also be a
[link:https://developer.mozilla.org/en-US/docs/Web/HTTP/Basics_of_HTTP/Data_URIs Data URI].<br />
[page:Function onLoad] — Will be called when load completes. The argument will be the loaded [page:Image image].<br />
[page:Function onProgress] — This callback function is currently not supported.<br />
[page:Function onError] — Will be called when load errors.<br />
</p>
<p>
Begin loading from url and return the [page:ImageBitmap image] object that will contain the data.
</p>
<h3>[method:ImageBitmapLoader setOptions]( [param:Object options] )</h3>
<p>
Sets the options object for [link:https://developer.mozilla.org/en-US/docs/Web/API/WindowOrWorkerGlobalScope/createImageBitmap createImageBitmap].
</p>
<h2>Source</h2>
<p>
[link:https://github.com/mrdoob/three.js/blob/master/src/[path].js src/[path].js]
</p>
</body>
</html>
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