javascript
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three.js
зеркало из https://github.com/tazdij/three.js.git


			
				
					
						
						
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	<body>
		[page:Loader] &rarr;

		<h1>[name]</h1>

		<p class="desc">
			Loader for KTX 2.0 GPU Texture containers.<br><br>

			[link:http://github.khronos.org/KTX-Specification/ KTX 2.0] is a container format for various GPU texture formats. The loader
 			supports Basis Universal GPU textures, which can be quickly transcoded to
 			a wide variety of GPU texture compression formats. While KTX 2.0 also allows
 			other hardware-specific formats, this loader does not yet parse them.
		</p>

		<p>
			This loader parses the KTX 2.0 container and transcodes to a supported GPU compressed
			texture format. The required WASM transcoder and JS wrapper are available from the
			[link:https://github.com/mrdoob/three.js/tree/dev/examples/jsm/libs/basis examples/jsm/libs/basis]
			directory.
		</p>

		<h2>Code Example</h2>

		<code>
		var ktx2Loader = new THREE.KTX2Loader();
		ktx2Loader.setTranscoderPath( 'examples/jsm/libs/basis/' );
		ktx2Loader.detectSupport( renderer );
		ktx2Loader.load( 'diffuse.ktx2', function ( texture ) {

			var material = new THREE.MeshStandardMaterial( { map: texture } );

		}, function () {

			console.log( 'onProgress' );

		}, function ( e ) {

			console.error( e );

		} );
		</code>

		<h2>Examples</h2>

		<p>
			[example:webgl_loader_texture_ktx2]
		</p>

		<h2>Browser compatibility</h2>

		<p>
			This loader relies on Web Assembly which is not supported in older browsers.
		</p>

		<br>
		<hr>

		<h2>Constructor</h2>

		<h3>[name]( [param:LoadingManager manager] )</h3>
		<p>
		[page:LoadingManager manager] — The [page:LoadingManager] for the loader to use. Default is [page:LoadingManager THREE.DefaultLoadingManager].
		</p>
		<p>
		Creates a new [name].
		</p>

		<h2>Properties</h2>
		<p>See the base [page:Loader] class for common properties.</p>

		<h2>Methods</h2>
		<p>See the base [page:Loader] class for common methods.</p>

		<h3>[method:CompressedTexture load]( [param:String url], [param:Function onLoad], [param:Function onProgress], [param:Function onError] )</h3>
		<p>
		[page:String url] — A string containing the path/URL of the `.basis` file.<br />
		[page:Function onLoad] — A function to be called after the loading is successfully completed.<br />
		[page:Function onProgress] — (optional) A function to be called while the loading is in progress. The argument will be the XMLHttpRequest instance, that contains .[page:Integer total] and .[page:Integer loaded] bytes. If the server does not set the Content-Length header; .[page:Integer total] will be 0.<br />
		[page:Function onError] — (optional) A function to be called if an error occurs during loading. The function receives error as an argument.<br />
		</p>
		<p>
		Load from url and call the `onLoad` function with the transcoded [page:CompressedTexture].
		</p>

		<h3>[method:this detectSupport]( [param:WebGLRenderer renderer] )</h3>
		<p>
		[page:WebGLRenderer renderer] — A renderer instance.
		</p>
		<p>
		Detects hardware support for available compressed texture formats, to determine
		the output format for the transcoder. Must be called before loading a texture.
		</p>

		<h3>[method:this setTranscoderPath]( [param:String path] )</h3>
		<p>
		[page:String path] — Path to folder containing the WASM transcoder and JS wrapper.
		</p>
		<p>
		The WASM transcoder and JS wrapper are available from the
		[link:https://github.com/mrdoob/three.js/tree/dev/examples/jsm/libs/basis examples/jsm/libs/basis]
		directory.
		</p>

		<h3>[method:this setWorkerLimit]( [param:Number limit] )</h3>
		<p>
		[page:Number limit] — Maximum number of workers. Default is '4'.
		</p>
		<p>
		Sets the maximum number of web workers to be allocated by this instance.
		</p>

		<h3>[method:this dispose]()</h3>
		<p>
		Disposes the loader object, de-allocating any Web Workers created.
		</p>

		<h2>Source</h2>

		<p>
			[link:https://github.com/mrdoob/three.js/blob/master/examples/jsm/loaders/KTX2Loader.js examples/jsm/loaders/KTX2Loader.js]
		</p>
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