add Potree (version 1.8)
This commit is contained in:
Tim Wundenberg
@@ -0,0 +1,743 @@
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/**
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* References:
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* - KTX: http://github.khronos.org/KTX-Specification/
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* - DFD: https://www.khronos.org/registry/DataFormat/specs/1.3/dataformat.1.3.html#basicdescriptor
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*
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* To do:
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* - [ ] High-quality demo
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* - [ ] Documentation
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* - [ ] (Optional) Include BC5
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* - [ ] (Optional) Include EAC RG on mobile (WEBGL_compressed_texture_etc)
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* - [ ] (Optional) Include two-texture output mode (see: clearcoat + clearcoatRoughness)
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* - [ ] (Optional) Support Web Workers, after #18234
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*/
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import {
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CompressedTexture,
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CompressedTextureLoader,
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FileLoader,
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LinearEncoding,
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LinearFilter,
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LinearMipmapLinearFilter,
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MathUtils,
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RGBAFormat,
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RGBA_ASTC_4x4_Format,
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RGBA_BPTC_Format,
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RGBA_ETC2_EAC_Format,
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RGBA_PVRTC_4BPPV1_Format,
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RGBA_S3TC_DXT5_Format,
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RGB_ETC1_Format,
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RGB_ETC2_Format,
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RGB_PVRTC_4BPPV1_Format,
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RGB_S3TC_DXT1_Format,
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UnsignedByteType,
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sRGBEncoding,
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} from '../../../build/three.module.js';
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import { ZSTDDecoder } from '../libs/zstddec.module.js';
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// Data Format Descriptor (DFD) constants.
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const DFDModel = {
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ETC1S: 163,
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UASTC: 166,
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};
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const DFDChannel = {
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ETC1S: {
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RGB: 0,
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RRR: 3,
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GGG: 4,
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AAA: 15,
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},
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UASTC: {
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RGB: 0,
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RGBA: 3,
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RRR: 4,
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RRRG: 5
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},
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};
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//
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class KTX2Loader extends CompressedTextureLoader {
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constructor( manager ) {
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super( manager );
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this.basisModule = null;
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this.basisModulePending = null;
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this.transcoderConfig = {};
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}
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detectSupport( renderer ) {
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this.transcoderConfig = {
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astcSupported: renderer.extensions.has( 'WEBGL_compressed_texture_astc' ),
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etc1Supported: renderer.extensions.has( 'WEBGL_compressed_texture_etc1' ),
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etc2Supported: renderer.extensions.has( 'WEBGL_compressed_texture_etc' ),
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dxtSupported: renderer.extensions.has( 'WEBGL_compressed_texture_s3tc' ),
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bptcSupported: renderer.extensions.has( 'EXT_texture_compression_bptc' ),
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pvrtcSupported: renderer.extensions.has( 'WEBGL_compressed_texture_pvrtc' )
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|| renderer.extensions.has( 'WEBKIT_WEBGL_compressed_texture_pvrtc' )
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};
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return this;
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}
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initModule() {
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if ( this.basisModulePending ) {
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return;
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}
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var scope = this;
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// The Emscripten wrapper returns a fake Promise, which can cause
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// infinite recursion when mixed with native Promises. Wrap the module
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// initialization to return a native Promise.
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scope.basisModulePending = new Promise( function ( resolve ) {
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MSC_TRANSCODER().then( function ( basisModule ) { // eslint-disable-line no-undef
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scope.basisModule = basisModule;
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basisModule.initTranscoders();
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resolve();
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} );
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} );
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}
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load( url, onLoad, onProgress, onError ) {
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var scope = this;
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var texture = new CompressedTexture();
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var bufferPending = new Promise( function ( resolve, reject ) {
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new FileLoader( scope.manager )
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.setPath( scope.path )
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.setResponseType( 'arraybuffer' )
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.load( url, resolve, onProgress, reject );
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} );
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// parse() will call initModule() again, but starting the process early
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// should allow the WASM to load in parallel with the texture.
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this.initModule();
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Promise.all( [ bufferPending, this.basisModulePending ] )
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.then( function ( [ buffer ] ) {
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scope.parse( buffer, function ( _texture ) {
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texture.copy( _texture );
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texture.needsUpdate = true;
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if ( onLoad ) onLoad( texture );
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}, onError );
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} )
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.catch( onError );
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return texture;
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}
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parse( buffer, onLoad, onError ) {
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var scope = this;
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// load() may have already called initModule(), but call it again here
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// in case the user called parse() directly. Method is idempotent.
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this.initModule();
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this.basisModulePending.then( function () {
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var BasisLzEtc1sImageTranscoder = scope.basisModule.BasisLzEtc1sImageTranscoder;
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var UastcImageTranscoder = scope.basisModule.UastcImageTranscoder;
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var TextureFormat = scope.basisModule.TextureFormat;
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var ktx = new KTX2Container( scope.basisModule, buffer );
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// TODO(donmccurdy): Should test if texture is transcodable before attempting
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// any transcoding. If supercompressionScheme is KTX_SS_BASIS_LZ and dfd
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// colorModel is ETC1S (163) or if dfd colorModel is UASTCF (166)
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// then texture must be transcoded.
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var transcoder = ktx.getTexFormat() === TextureFormat.UASTC4x4
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? new UastcImageTranscoder()
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: new BasisLzEtc1sImageTranscoder();
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ktx.initMipmaps( transcoder, scope.transcoderConfig )
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.then( function () {
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var texture = new CompressedTexture(
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ktx.mipmaps,
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ktx.getWidth(),
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ktx.getHeight(),
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ktx.transcodedFormat,
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UnsignedByteType
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);
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texture.encoding = ktx.getEncoding();
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texture.premultiplyAlpha = ktx.getPremultiplyAlpha();
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texture.minFilter = ktx.mipmaps.length === 1 ? LinearFilter : LinearMipmapLinearFilter;
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texture.magFilter = LinearFilter;
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onLoad( texture );
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} )
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.catch( onError );
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} );
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return this;
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}
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}
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class KTX2Container {
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constructor( basisModule, arrayBuffer ) {
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this.basisModule = basisModule;
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this.arrayBuffer = arrayBuffer;
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this.zstd = new ZSTDDecoder();
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this.zstd.init();
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this.mipmaps = null;
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this.transcodedFormat = null;
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// Confirm this is a KTX 2.0 file, based on the identifier in the first 12 bytes.
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var idByteLength = 12;
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var id = new Uint8Array( this.arrayBuffer, 0, idByteLength );
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if ( id[ 0 ] !== 0xAB || // '´'
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id[ 1 ] !== 0x4B || // 'K'
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id[ 2 ] !== 0x54 || // 'T'
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id[ 3 ] !== 0x58 || // 'X'
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id[ 4 ] !== 0x20 || // ' '
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id[ 5 ] !== 0x32 || // '2'
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id[ 6 ] !== 0x30 || // '0'
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id[ 7 ] !== 0xBB || // 'ª'
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id[ 8 ] !== 0x0D || // '\r'
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id[ 9 ] !== 0x0A || // '\n'
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id[ 10 ] !== 0x1A || // '\x1A'
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id[ 11 ] !== 0x0A // '\n'
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) {
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throw new Error( 'THREE.KTX2Loader: Missing KTX 2.0 identifier.' );
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}
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// TODO(donmccurdy): If we need to support BE, derive this from typeSize.
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var littleEndian = true;
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///////////////////////////////////////////////////
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// Header.
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///////////////////////////////////////////////////
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var headerByteLength = 17 * Uint32Array.BYTES_PER_ELEMENT;
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var headerReader = new KTX2BufferReader( this.arrayBuffer, idByteLength, headerByteLength, littleEndian );
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this.header = {
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vkFormat: headerReader.nextUint32(),
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typeSize: headerReader.nextUint32(),
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pixelWidth: headerReader.nextUint32(),
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pixelHeight: headerReader.nextUint32(),
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pixelDepth: headerReader.nextUint32(),
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arrayElementCount: headerReader.nextUint32(),
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faceCount: headerReader.nextUint32(),
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levelCount: headerReader.nextUint32(),
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supercompressionScheme: headerReader.nextUint32(),
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dfdByteOffset: headerReader.nextUint32(),
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dfdByteLength: headerReader.nextUint32(),
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kvdByteOffset: headerReader.nextUint32(),
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kvdByteLength: headerReader.nextUint32(),
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sgdByteOffset: headerReader.nextUint64(),
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sgdByteLength: headerReader.nextUint64(),
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};
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if ( this.header.pixelDepth > 0 ) {
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throw new Error( 'THREE.KTX2Loader: Only 2D textures are currently supported.' );
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}
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if ( this.header.arrayElementCount > 1 ) {
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throw new Error( 'THREE.KTX2Loader: Array textures are not currently supported.' );
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}
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if ( this.header.faceCount > 1 ) {
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throw new Error( 'THREE.KTX2Loader: Cube textures are not currently supported.' );
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}
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///////////////////////////////////////////////////
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// Level index
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///////////////////////////////////////////////////
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var levelByteLength = this.header.levelCount * 3 * 8;
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var levelReader = new KTX2BufferReader( this.arrayBuffer, idByteLength + headerByteLength, levelByteLength, littleEndian );
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this.levels = [];
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for ( var i = 0; i < this.header.levelCount; i ++ ) {
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this.levels.push( {
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byteOffset: levelReader.nextUint64(),
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byteLength: levelReader.nextUint64(),
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uncompressedByteLength: levelReader.nextUint64(),
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} );
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}
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///////////////////////////////////////////////////
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// Data Format Descriptor (DFD)
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///////////////////////////////////////////////////
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var dfdReader = new KTX2BufferReader(
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this.arrayBuffer,
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this.header.dfdByteOffset,
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this.header.dfdByteLength,
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littleEndian
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);
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const sampleStart = 6;
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const sampleWords = 4;
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this.dfd = {
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vendorId: dfdReader.skip( 4 /* totalSize */ ).nextUint16(),
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versionNumber: dfdReader.skip( 2 /* descriptorType */ ).nextUint16(),
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descriptorBlockSize: dfdReader.nextUint16(),
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colorModel: dfdReader.nextUint8(),
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colorPrimaries: dfdReader.nextUint8(),
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transferFunction: dfdReader.nextUint8(),
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flags: dfdReader.nextUint8(),
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texelBlockDimension: {
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x: dfdReader.nextUint8() + 1,
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y: dfdReader.nextUint8() + 1,
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z: dfdReader.nextUint8() + 1,
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w: dfdReader.nextUint8() + 1,
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},
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bytesPlane0: dfdReader.nextUint8(),
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numSamples: 0,
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samples: [],
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};
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this.dfd.numSamples = ( this.dfd.descriptorBlockSize / 4 - sampleStart ) / sampleWords;
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dfdReader.skip( 7 /* bytesPlane[1-7] */ );
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for ( var i = 0; i < this.dfd.numSamples; i ++ ) {
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this.dfd.samples[ i ] = {
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channelID: dfdReader.skip( 3 /* bitOffset + bitLength */ ).nextUint8(),
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// ... remainder not implemented.
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};
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dfdReader.skip( 12 /* samplePosition[0-3], lower, upper */ );
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}
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if ( this.header.vkFormat !== 0x00 /* VK_FORMAT_UNDEFINED */ &&
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! ( this.header.supercompressionScheme === 1 /* BasisLZ */ ||
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this.dfd.colorModel === DFDModel.UASTC ) ) {
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throw new Error( 'THREE.KTX2Loader: Only Basis Universal supercompression is currently supported.' );
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}
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///////////////////////////////////////////////////
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// Key/Value Data (KVD)
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///////////////////////////////////////////////////
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// Not implemented.
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this.kvd = {};
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///////////////////////////////////////////////////
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// Supercompression Global Data (SGD)
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///////////////////////////////////////////////////
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this.sgd = {};
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if ( this.header.sgdByteLength <= 0 ) return;
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var sgdReader = new KTX2BufferReader(
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this.arrayBuffer,
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this.header.sgdByteOffset,
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this.header.sgdByteLength,
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littleEndian
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);
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this.sgd.endpointCount = sgdReader.nextUint16();
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this.sgd.selectorCount = sgdReader.nextUint16();
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this.sgd.endpointsByteLength = sgdReader.nextUint32();
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this.sgd.selectorsByteLength = sgdReader.nextUint32();
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this.sgd.tablesByteLength = sgdReader.nextUint32();
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this.sgd.extendedByteLength = sgdReader.nextUint32();
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this.sgd.imageDescs = [];
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this.sgd.endpointsData = null;
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this.sgd.selectorsData = null;
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this.sgd.tablesData = null;
|
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this.sgd.extendedData = null;
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for ( var i = 0; i < this.header.levelCount; i ++ ) {
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this.sgd.imageDescs.push( {
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imageFlags: sgdReader.nextUint32(),
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rgbSliceByteOffset: sgdReader.nextUint32(),
|
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rgbSliceByteLength: sgdReader.nextUint32(),
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alphaSliceByteOffset: sgdReader.nextUint32(),
|
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alphaSliceByteLength: sgdReader.nextUint32(),
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} );
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}
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var endpointsByteOffset = this.header.sgdByteOffset + sgdReader.offset;
|
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var selectorsByteOffset = endpointsByteOffset + this.sgd.endpointsByteLength;
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var tablesByteOffset = selectorsByteOffset + this.sgd.selectorsByteLength;
|
||||
var extendedByteOffset = tablesByteOffset + this.sgd.tablesByteLength;
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||||
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||||
this.sgd.endpointsData = new Uint8Array( this.arrayBuffer, endpointsByteOffset, this.sgd.endpointsByteLength );
|
||||
this.sgd.selectorsData = new Uint8Array( this.arrayBuffer, selectorsByteOffset, this.sgd.selectorsByteLength );
|
||||
this.sgd.tablesData = new Uint8Array( this.arrayBuffer, tablesByteOffset, this.sgd.tablesByteLength );
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this.sgd.extendedData = new Uint8Array( this.arrayBuffer, extendedByteOffset, this.sgd.extendedByteLength );
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||||
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||||
}
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||||
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async initMipmaps( transcoder, config ) {
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||||
await this.zstd.init();
|
||||
|
||||
var TranscodeTarget = this.basisModule.TranscodeTarget;
|
||||
var TextureFormat = this.basisModule.TextureFormat;
|
||||
var ImageInfo = this.basisModule.ImageInfo;
|
||||
|
||||
var scope = this;
|
||||
|
||||
var mipmaps = [];
|
||||
var width = this.getWidth();
|
||||
var height = this.getHeight();
|
||||
var texFormat = this.getTexFormat();
|
||||
var hasAlpha = this.getAlpha();
|
||||
var isVideo = false;
|
||||
|
||||
// PVRTC1 transcoders (from both ETC1S and UASTC) only support power of 2 dimensions.
|
||||
var pvrtcTranscodable = MathUtils.isPowerOfTwo( width ) && MathUtils.isPowerOfTwo( height );
|
||||
|
||||
if ( texFormat === TextureFormat.ETC1S ) {
|
||||
|
||||
var numEndpoints = this.sgd.endpointCount;
|
||||
var numSelectors = this.sgd.selectorCount;
|
||||
var endpoints = this.sgd.endpointsData;
|
||||
var selectors = this.sgd.selectorsData;
|
||||
var tables = this.sgd.tablesData;
|
||||
|
||||
transcoder.decodePalettes( numEndpoints, endpoints, numSelectors, selectors );
|
||||
transcoder.decodeTables( tables );
|
||||
|
||||
}
|
||||
|
||||
|
||||
var targetFormat;
|
||||
|
||||
if ( config.astcSupported ) {
|
||||
|
||||
targetFormat = TranscodeTarget.ASTC_4x4_RGBA;
|
||||
this.transcodedFormat = RGBA_ASTC_4x4_Format;
|
||||
|
||||
} else if ( config.bptcSupported && texFormat === TextureFormat.UASTC4x4 ) {
|
||||
|
||||
targetFormat = TranscodeTarget.BC7_M5_RGBA;
|
||||
this.transcodedFormat = RGBA_BPTC_Format;
|
||||
|
||||
} else if ( config.dxtSupported ) {
|
||||
|
||||
targetFormat = hasAlpha ? TranscodeTarget.BC3_RGBA : TranscodeTarget.BC1_RGB;
|
||||
this.transcodedFormat = hasAlpha ? RGBA_S3TC_DXT5_Format : RGB_S3TC_DXT1_Format;
|
||||
|
||||
} else if ( config.pvrtcSupported && pvrtcTranscodable ) {
|
||||
|
||||
targetFormat = hasAlpha ? TranscodeTarget.PVRTC1_4_RGBA : TranscodeTarget.PVRTC1_4_RGB;
|
||||
this.transcodedFormat = hasAlpha ? RGBA_PVRTC_4BPPV1_Format : RGB_PVRTC_4BPPV1_Format;
|
||||
|
||||
} else if ( config.etc2Supported ) {
|
||||
|
||||
targetFormat = hasAlpha ? TranscodeTarget.ETC2_RGBA : TranscodeTarget.ETC1_RGB/* subset of ETC2 */;
|
||||
this.transcodedFormat = hasAlpha ? RGBA_ETC2_EAC_Format : RGB_ETC2_Format;
|
||||
|
||||
} else if ( config.etc1Supported ) {
|
||||
|
||||
targetFormat = TranscodeTarget.ETC1_RGB;
|
||||
this.transcodedFormat = RGB_ETC1_Format;
|
||||
|
||||
} else {
|
||||
|
||||
console.warn( 'THREE.KTX2Loader: No suitable compressed texture format found. Decoding to RGBA32.' );
|
||||
|
||||
targetFormat = TranscodeTarget.RGBA32;
|
||||
this.transcodedFormat = RGBAFormat;
|
||||
|
||||
}
|
||||
|
||||
if ( ! this.basisModule.isFormatSupported( targetFormat, texFormat ) ) {
|
||||
|
||||
throw new Error( 'THREE.KTX2Loader: Selected texture format not supported by current transcoder build.' );
|
||||
|
||||
}
|
||||
|
||||
var imageDescIndex = 0;
|
||||
|
||||
for ( var level = 0; level < this.header.levelCount; level ++ ) {
|
||||
|
||||
var levelWidth = Math.ceil( width / Math.pow( 2, level ) );
|
||||
var levelHeight = Math.ceil( height / Math.pow( 2, level ) );
|
||||
|
||||
var numImagesInLevel = 1; // TODO(donmccurdy): Support cubemaps, arrays and 3D.
|
||||
var imageOffsetInLevel = 0;
|
||||
var imageInfo = new ImageInfo( texFormat, levelWidth, levelHeight, level );
|
||||
var levelByteLength = this.levels[ level ].byteLength;
|
||||
var levelUncompressedByteLength = this.levels[ level ].uncompressedByteLength;
|
||||
|
||||
for ( var imageIndex = 0; imageIndex < numImagesInLevel; imageIndex ++ ) {
|
||||
|
||||
var result;
|
||||
var encodedData;
|
||||
|
||||
if ( texFormat === TextureFormat.UASTC4x4 ) {
|
||||
|
||||
// UASTC
|
||||
|
||||
imageInfo.flags = 0;
|
||||
imageInfo.rgbByteOffset = 0;
|
||||
imageInfo.rgbByteLength = levelUncompressedByteLength;
|
||||
imageInfo.alphaByteOffset = 0;
|
||||
imageInfo.alphaByteLength = 0;
|
||||
|
||||
encodedData = new Uint8Array( this.arrayBuffer, this.levels[ level ].byteOffset + imageOffsetInLevel, levelByteLength );
|
||||
|
||||
if ( this.header.supercompressionScheme === 2 /* ZSTD */ ) {
|
||||
|
||||
encodedData = this.zstd.decode( encodedData, levelUncompressedByteLength );
|
||||
|
||||
}
|
||||
|
||||
result = transcoder.transcodeImage( targetFormat, encodedData, imageInfo, 0, hasAlpha, isVideo );
|
||||
|
||||
} else {
|
||||
|
||||
// ETC1S
|
||||
|
||||
var imageDesc = this.sgd.imageDescs[ imageDescIndex ++ ];
|
||||
|
||||
imageInfo.flags = imageDesc.imageFlags;
|
||||
imageInfo.rgbByteOffset = 0;
|
||||
imageInfo.rgbByteLength = imageDesc.rgbSliceByteLength;
|
||||
imageInfo.alphaByteOffset = imageDesc.alphaSliceByteOffset > 0 ? imageDesc.rgbSliceByteLength : 0;
|
||||
imageInfo.alphaByteLength = imageDesc.alphaSliceByteLength;
|
||||
|
||||
encodedData = new Uint8Array( this.arrayBuffer, this.levels[ level ].byteOffset + imageDesc.rgbSliceByteOffset, imageDesc.rgbSliceByteLength + imageDesc.alphaSliceByteLength );
|
||||
|
||||
result = transcoder.transcodeImage( targetFormat, encodedData, imageInfo, 0, isVideo );
|
||||
|
||||
}
|
||||
|
||||
if ( result.transcodedImage === undefined ) {
|
||||
|
||||
throw new Error( 'THREE.KTX2Loader: Unable to transcode image.' );
|
||||
|
||||
}
|
||||
|
||||
// Transcoded image is written in memory allocated by WASM. We could avoid copying
|
||||
// the image by waiting until the image is uploaded to the GPU, then calling
|
||||
// delete(). However, (1) we don't know if the user will later need to re-upload it
|
||||
// e.g. after calling texture.clone(), and (2) this code will eventually be in a
|
||||
// Web Worker, and transferring WASM's memory seems like a very bad idea.
|
||||
var levelData = result.transcodedImage.get_typed_memory_view().slice();
|
||||
result.transcodedImage.delete();
|
||||
|
||||
mipmaps.push( { data: levelData, width: levelWidth, height: levelHeight } );
|
||||
imageOffsetInLevel += levelByteLength;
|
||||
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
scope.mipmaps = mipmaps;
|
||||
|
||||
}
|
||||
|
||||
getWidth() {
|
||||
|
||||
return this.header.pixelWidth;
|
||||
|
||||
}
|
||||
|
||||
getHeight() {
|
||||
|
||||
return this.header.pixelHeight;
|
||||
|
||||
}
|
||||
|
||||
getEncoding() {
|
||||
|
||||
return this.dfd.transferFunction === 2 /* KHR_DF_TRANSFER_SRGB */
|
||||
? sRGBEncoding
|
||||
: LinearEncoding;
|
||||
|
||||
}
|
||||
|
||||
getTexFormat() {
|
||||
|
||||
var TextureFormat = this.basisModule.TextureFormat;
|
||||
|
||||
return this.dfd.colorModel === DFDModel.UASTC ? TextureFormat.UASTC4x4 : TextureFormat.ETC1S;
|
||||
|
||||
}
|
||||
|
||||
getAlpha() {
|
||||
|
||||
var TextureFormat = this.basisModule.TextureFormat;
|
||||
|
||||
// TODO(donmccurdy): Handle all channelIDs (i.e. the R & R+G cases),
|
||||
// choosing appropriate transcode target formats or providing queries
|
||||
// for applications so they know what to do with the content.
|
||||
|
||||
if ( this.getTexFormat() === TextureFormat.UASTC4x4 ) {
|
||||
|
||||
// UASTC
|
||||
|
||||
if ( ( this.dfd.samples[ 0 ].channelID & 0xF ) === DFDChannel.UASTC.RGBA ) {
|
||||
|
||||
return true;
|
||||
|
||||
}
|
||||
|
||||
return false;
|
||||
|
||||
}
|
||||
|
||||
// ETC1S
|
||||
|
||||
if ( this.dfd.numSamples === 2 && ( this.dfd.samples[ 1 ].channelID & 0xF ) === DFDChannel.ETC1S.AAA ) {
|
||||
|
||||
return true;
|
||||
|
||||
}
|
||||
|
||||
return false;
|
||||
|
||||
}
|
||||
|
||||
getPremultiplyAlpha() {
|
||||
|
||||
return !! ( this.dfd.flags & 1 /* KHR_DF_FLAG_ALPHA_PREMULTIPLIED */ );
|
||||
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
class KTX2BufferReader {
|
||||
|
||||
constructor( arrayBuffer, byteOffset, byteLength, littleEndian ) {
|
||||
|
||||
this.dataView = new DataView( arrayBuffer, byteOffset, byteLength );
|
||||
this.littleEndian = littleEndian;
|
||||
this.offset = 0;
|
||||
|
||||
}
|
||||
|
||||
nextUint8() {
|
||||
|
||||
var value = this.dataView.getUint8( this.offset, this.littleEndian );
|
||||
|
||||
this.offset += 1;
|
||||
|
||||
return value;
|
||||
|
||||
}
|
||||
|
||||
nextUint16() {
|
||||
|
||||
var value = this.dataView.getUint16( this.offset, this.littleEndian );
|
||||
|
||||
this.offset += 2;
|
||||
|
||||
return value;
|
||||
|
||||
}
|
||||
|
||||
nextUint32() {
|
||||
|
||||
var value = this.dataView.getUint32( this.offset, this.littleEndian );
|
||||
|
||||
this.offset += 4;
|
||||
|
||||
return value;
|
||||
|
||||
}
|
||||
|
||||
nextUint64() {
|
||||
|
||||
// https://stackoverflow.com/questions/53103695/
|
||||
var left = this.dataView.getUint32( this.offset, this.littleEndian );
|
||||
var right = this.dataView.getUint32( this.offset + 4, this.littleEndian );
|
||||
var value = this.littleEndian ? left + ( 2 ** 32 * right ) : ( 2 ** 32 * left ) + right;
|
||||
|
||||
if ( ! Number.isSafeInteger( value ) ) {
|
||||
|
||||
console.warn( 'THREE.KTX2Loader: ' + value + ' exceeds MAX_SAFE_INTEGER. Precision may be lost.' );
|
||||
|
||||
}
|
||||
|
||||
this.offset += 8;
|
||||
|
||||
return value;
|
||||
|
||||
}
|
||||
|
||||
skip( bytes ) {
|
||||
|
||||
this.offset += bytes;
|
||||
|
||||
return this;
|
||||
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
export { KTX2Loader };
|
||||
Reference in New Issue
Block a user