142 lines
2.7 KiB
JavaScript
142 lines
2.7 KiB
JavaScript
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import { LinearFilter } from '../constants.js';
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import { FileLoader } from './FileLoader.js';
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import { CompressedTexture } from '../textures/CompressedTexture.js';
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import { DefaultLoadingManager } from './LoadingManager.js';
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/**
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* @author mrdoob / http://mrdoob.com/
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*
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* Abstract Base class to block based textures loader (dds, pvr, ...)
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*/
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function CompressedTextureLoader( manager ) {
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this.manager = ( manager !== undefined ) ? manager : DefaultLoadingManager;
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// override in sub classes
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this._parser = null;
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}
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Object.assign( CompressedTextureLoader.prototype, {
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load: function ( url, onLoad, onProgress, onError ) {
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var scope = this;
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var images = [];
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var texture = new CompressedTexture();
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texture.image = images;
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var loader = new FileLoader( this.manager );
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loader.setPath( this.path );
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loader.setResponseType( 'arraybuffer' );
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function loadTexture( i ) {
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loader.load( url[ i ], function ( buffer ) {
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var texDatas = scope._parser( buffer, true );
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images[ i ] = {
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width: texDatas.width,
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height: texDatas.height,
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format: texDatas.format,
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mipmaps: texDatas.mipmaps
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};
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loaded += 1;
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if ( loaded === 6 ) {
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if ( texDatas.mipmapCount === 1 )
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texture.minFilter = LinearFilter;
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texture.format = texDatas.format;
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texture.needsUpdate = true;
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if ( onLoad ) onLoad( texture );
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}
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}, onProgress, onError );
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}
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if ( Array.isArray( url ) ) {
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var loaded = 0;
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for ( var i = 0, il = url.length; i < il; ++ i ) {
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loadTexture( i );
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}
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} else {
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// compressed cubemap texture stored in a single DDS file
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loader.load( url, function ( buffer ) {
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var texDatas = scope._parser( buffer, true );
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if ( texDatas.isCubemap ) {
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var faces = texDatas.mipmaps.length / texDatas.mipmapCount;
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for ( var f = 0; f < faces; f ++ ) {
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images[ f ] = { mipmaps: [] };
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for ( var i = 0; i < texDatas.mipmapCount; i ++ ) {
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images[ f ].mipmaps.push( texDatas.mipmaps[ f * texDatas.mipmapCount + i ] );
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images[ f ].format = texDatas.format;
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images[ f ].width = texDatas.width;
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images[ f ].height = texDatas.height;
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}
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}
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} else {
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texture.image.width = texDatas.width;
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texture.image.height = texDatas.height;
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texture.mipmaps = texDatas.mipmaps;
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}
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if ( texDatas.mipmapCount === 1 ) {
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texture.minFilter = LinearFilter;
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}
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texture.format = texDatas.format;
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texture.needsUpdate = true;
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if ( onLoad ) onLoad( texture );
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}, onProgress, onError );
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}
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return texture;
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},
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setPath: function ( value ) {
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this.path = value;
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return this;
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}
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} );
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export { CompressedTextureLoader };
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