[page:Loader] →

# [name]

A loader for loading an [page:Image] as an [link:https://developer.mozilla.org/en-US/docs/Web/API/ImageBitmap ImageBitmap]. An ImageBitmap provides an asynchronous and resource efficient pathway to prepare textures for rendering in WebGL.
Unlike [page:FileLoader], [name] does not avoid multiple concurrent requests to the same URL.

Note that [page:Texture.flipY] and [page:Texture.premultiplyAlpha] with [link:https://developer.mozilla.org/en-US/docs/Web/API/ImageBitmap ImageBitmap] are ignored. [link:https://developer.mozilla.org/en-US/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.

## Code Example

`// instantiate a loader const 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 ) { const texture = new THREE.CanvasTexture( imageBitmap ); const material = new THREE.MeshBasicMaterial( { map: texture } ); }, // onProgress callback currently not supported undefined, // onError callback function ( err ) { console.log( 'An error happened' ); } );`

## Examples

[example:webgl_loader_imagebitmap WebGL / loader / ImageBitmap]

## Constructor

### [name]( [param:LoadingManager manager] )

[page:LoadingManager manager] — The [page:LoadingManager loadingManager] for the loader to use. Default is [page:LoadingManager THREE.DefaultLoadingManager].
Creates a new [name].

## Properties

See the base [page:Loader] class for common properties.

### [property:Boolean isImageBitmapLoader]

Read-only flag to check if a given object is of type [name].

### [property:String options]

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`.

## Methods

See the base [page:Loader] class for common methods.

### [method:undefined load]( [param:String url], [param:Function onLoad], [param:Function onProgress], [param:Function onError] )

[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].
[page:Function onLoad] — Will be called when load completes. The argument will be the loaded [page:Image image].
[page:Function onProgress] (optional) — This callback function is currently not supported.
[page:Function onError] (optional) — Will be called when load errors.

Begin loading from url and return the [page:ImageBitmap image] object that will contain the data.

### [method:this setOptions]( [param:Object options] )

Sets the options object for [link:https://developer.mozilla.org/en-US/docs/Web/API/WindowOrWorkerGlobalScope/createImageBitmap createImageBitmap].

## Source

[link:https://github.com/mrdoob/three.js/blob/master/src/[path].js src/[path].js]