949 lines
26 KiB
JavaScript
949 lines
26 KiB
JavaScript
/**
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* @author mrdoob / http://mrdoob.com/
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*/
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import { LinearFilter, NearestFilter, RGBFormat, RGBAFormat, DepthFormat, DepthStencilFormat, UnsignedShortType, UnsignedIntType, UnsignedInt248Type, FloatType, HalfFloatType, ClampToEdgeWrapping, NearestMipMapLinearFilter, NearestMipMapNearestFilter } from '../../constants.js';
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import { _Math } from '../../math/Math.js';
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function WebGLTextures( _gl, extensions, state, properties, capabilities, utils, info ) {
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var _videoTextures = {};
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var _canvas;
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//
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function clampToMaxSize( image, maxSize ) {
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if ( image.width > maxSize || image.height > maxSize ) {
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if ( 'data' in image ) {
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console.warn( 'THREE.WebGLRenderer: image in DataTexture is too big (' + image.width + 'x' + image.height + ').' );
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return;
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}
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// Warning: Scaling through the canvas will only work with images that use
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// premultiplied alpha.
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var scale = maxSize / Math.max( image.width, image.height );
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var canvas = document.createElementNS( 'http://www.w3.org/1999/xhtml', 'canvas' );
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canvas.width = Math.floor( image.width * scale );
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canvas.height = Math.floor( image.height * scale );
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var context = canvas.getContext( '2d' );
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context.drawImage( image, 0, 0, image.width, image.height, 0, 0, canvas.width, canvas.height );
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console.warn( 'THREE.WebGLRenderer: image is too big (' + image.width + 'x' + image.height + '). Resized to ' + canvas.width + 'x' + canvas.height );
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return canvas;
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}
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return image;
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}
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function isPowerOfTwo( image ) {
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return _Math.isPowerOfTwo( image.width ) && _Math.isPowerOfTwo( image.height );
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}
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function makePowerOfTwo( image ) {
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if ( image instanceof HTMLImageElement || image instanceof HTMLCanvasElement || image instanceof ImageBitmap ) {
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if ( _canvas === undefined ) _canvas = document.createElementNS( 'http://www.w3.org/1999/xhtml', 'canvas' );
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_canvas.width = _Math.floorPowerOfTwo( image.width );
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_canvas.height = _Math.floorPowerOfTwo( image.height );
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var context = _canvas.getContext( '2d' );
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context.drawImage( image, 0, 0, _canvas.width, _canvas.height );
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console.warn( 'THREE.WebGLRenderer: image is not power of two (' + image.width + 'x' + image.height + '). Resized to ' + _canvas.width + 'x' + _canvas.height );
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return _canvas;
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}
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return image;
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}
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function textureNeedsPowerOfTwo( texture ) {
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if ( capabilities.isWebGL2 ) return false;
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return ( texture.wrapS !== ClampToEdgeWrapping || texture.wrapT !== ClampToEdgeWrapping ) ||
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( texture.minFilter !== NearestFilter && texture.minFilter !== LinearFilter );
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}
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function textureNeedsGenerateMipmaps( texture, isPowerOfTwo ) {
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return texture.generateMipmaps && isPowerOfTwo &&
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texture.minFilter !== NearestFilter && texture.minFilter !== LinearFilter;
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}
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function generateMipmap( target, texture, width, height ) {
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_gl.generateMipmap( target );
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var textureProperties = properties.get( texture );
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// Note: Math.log( x ) * Math.LOG2E used instead of Math.log2( x ) which is not supported by IE11
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textureProperties.__maxMipLevel = Math.log( Math.max( width, height ) ) * Math.LOG2E;
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}
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function getInternalFormat( glFormat, glType ) {
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if ( ! capabilities.isWebGL2 ) return glFormat;
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if ( glFormat === _gl.RED ) {
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if ( glType === _gl.FLOAT ) return _gl.R32F;
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if ( glType === _gl.HALF_FLOAT ) return _gl.R16F;
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if ( glType === _gl.UNSIGNED_BYTE ) return _gl.R8;
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}
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if ( glFormat === _gl.RGB ) {
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if ( glType === _gl.FLOAT ) return _gl.RGB32F;
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if ( glType === _gl.HALF_FLOAT ) return _gl.RGB16F;
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if ( glType === _gl.UNSIGNED_BYTE ) return _gl.RGB8;
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}
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if ( glFormat === _gl.RGBA ) {
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if ( glType === _gl.FLOAT ) return _gl.RGBA32F;
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if ( glType === _gl.HALF_FLOAT ) return _gl.RGBA16F;
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if ( glType === _gl.UNSIGNED_BYTE ) return _gl.RGBA8;
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}
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return glFormat;
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}
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// Fallback filters for non-power-of-2 textures
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function filterFallback( f ) {
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if ( f === NearestFilter || f === NearestMipMapNearestFilter || f === NearestMipMapLinearFilter ) {
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return _gl.NEAREST;
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}
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return _gl.LINEAR;
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}
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//
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function onTextureDispose( event ) {
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var texture = event.target;
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texture.removeEventListener( 'dispose', onTextureDispose );
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deallocateTexture( texture );
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if ( texture.isVideoTexture ) {
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delete _videoTextures[ texture.id ];
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}
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info.memory.textures --;
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}
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function onRenderTargetDispose( event ) {
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var renderTarget = event.target;
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renderTarget.removeEventListener( 'dispose', onRenderTargetDispose );
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deallocateRenderTarget( renderTarget );
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info.memory.textures --;
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}
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//
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function deallocateTexture( texture ) {
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var textureProperties = properties.get( texture );
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if ( texture.image && textureProperties.__image__webglTextureCube ) {
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// cube texture
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_gl.deleteTexture( textureProperties.__image__webglTextureCube );
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} else {
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// 2D texture
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if ( textureProperties.__webglInit === undefined ) return;
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_gl.deleteTexture( textureProperties.__webglTexture );
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}
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// remove all webgl properties
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properties.remove( texture );
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}
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function deallocateRenderTarget( renderTarget ) {
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var renderTargetProperties = properties.get( renderTarget );
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var textureProperties = properties.get( renderTarget.texture );
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if ( ! renderTarget ) return;
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if ( textureProperties.__webglTexture !== undefined ) {
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_gl.deleteTexture( textureProperties.__webglTexture );
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}
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if ( renderTarget.depthTexture ) {
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renderTarget.depthTexture.dispose();
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}
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if ( renderTarget.isWebGLRenderTargetCube ) {
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for ( var i = 0; i < 6; i ++ ) {
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_gl.deleteFramebuffer( renderTargetProperties.__webglFramebuffer[ i ] );
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if ( renderTargetProperties.__webglDepthbuffer ) _gl.deleteRenderbuffer( renderTargetProperties.__webglDepthbuffer[ i ] );
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}
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} else {
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_gl.deleteFramebuffer( renderTargetProperties.__webglFramebuffer );
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if ( renderTargetProperties.__webglDepthbuffer ) _gl.deleteRenderbuffer( renderTargetProperties.__webglDepthbuffer );
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}
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properties.remove( renderTarget.texture );
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properties.remove( renderTarget );
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}
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//
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function setTexture2D( texture, slot ) {
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var textureProperties = properties.get( texture );
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if ( texture.isVideoTexture ) updateVideoTexture( texture );
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if ( texture.version > 0 && textureProperties.__version !== texture.version ) {
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var image = texture.image;
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if ( image === undefined ) {
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console.warn( 'THREE.WebGLRenderer: Texture marked for update but image is undefined' );
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} else if ( image.complete === false ) {
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console.warn( 'THREE.WebGLRenderer: Texture marked for update but image is incomplete' );
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} else {
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uploadTexture( textureProperties, texture, slot );
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return;
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}
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}
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state.activeTexture( _gl.TEXTURE0 + slot );
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state.bindTexture( _gl.TEXTURE_2D, textureProperties.__webglTexture );
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}
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function setTexture3D( texture, slot ) {
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var textureProperties = properties.get( texture );
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if ( texture.version > 0 && textureProperties.__version !== texture.version ) {
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uploadTexture( textureProperties, texture, slot );
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return;
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}
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state.activeTexture( _gl.TEXTURE0 + slot );
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state.bindTexture( _gl.TEXTURE_3D, textureProperties.__webglTexture );
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}
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function setTextureCube( texture, slot ) {
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var textureProperties = properties.get( texture );
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if ( texture.image.length === 6 ) {
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if ( texture.version > 0 && textureProperties.__version !== texture.version ) {
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if ( ! textureProperties.__image__webglTextureCube ) {
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texture.addEventListener( 'dispose', onTextureDispose );
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textureProperties.__image__webglTextureCube = _gl.createTexture();
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info.memory.textures ++;
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}
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state.activeTexture( _gl.TEXTURE0 + slot );
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state.bindTexture( _gl.TEXTURE_CUBE_MAP, textureProperties.__image__webglTextureCube );
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_gl.pixelStorei( _gl.UNPACK_FLIP_Y_WEBGL, texture.flipY );
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var isCompressed = ( texture && texture.isCompressedTexture );
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var isDataTexture = ( texture.image[ 0 ] && texture.image[ 0 ].isDataTexture );
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var cubeImage = [];
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for ( var i = 0; i < 6; i ++ ) {
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if ( ! isCompressed && ! isDataTexture ) {
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cubeImage[ i ] = clampToMaxSize( texture.image[ i ], capabilities.maxCubemapSize );
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} else {
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cubeImage[ i ] = isDataTexture ? texture.image[ i ].image : texture.image[ i ];
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}
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}
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var image = cubeImage[ 0 ],
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isPowerOfTwoImage = isPowerOfTwo( image ),
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glFormat = utils.convert( texture.format ),
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glType = utils.convert( texture.type ),
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glInternalFormat = getInternalFormat( glFormat, glType );
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setTextureParameters( _gl.TEXTURE_CUBE_MAP, texture, isPowerOfTwoImage );
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for ( var i = 0; i < 6; i ++ ) {
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if ( ! isCompressed ) {
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if ( isDataTexture ) {
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state.texImage2D( _gl.TEXTURE_CUBE_MAP_POSITIVE_X + i, 0, glInternalFormat, cubeImage[ i ].width, cubeImage[ i ].height, 0, glFormat, glType, cubeImage[ i ].data );
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} else {
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state.texImage2D( _gl.TEXTURE_CUBE_MAP_POSITIVE_X + i, 0, glInternalFormat, glFormat, glType, cubeImage[ i ] );
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}
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} else {
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var mipmap, mipmaps = cubeImage[ i ].mipmaps;
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for ( var j = 0, jl = mipmaps.length; j < jl; j ++ ) {
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mipmap = mipmaps[ j ];
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if ( texture.format !== RGBAFormat && texture.format !== RGBFormat ) {
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if ( state.getCompressedTextureFormats().indexOf( glFormat ) > - 1 ) {
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state.compressedTexImage2D( _gl.TEXTURE_CUBE_MAP_POSITIVE_X + i, j, glInternalFormat, mipmap.width, mipmap.height, 0, mipmap.data );
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} else {
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console.warn( 'THREE.WebGLRenderer: Attempt to load unsupported compressed texture format in .setTextureCube()' );
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}
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} else {
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state.texImage2D( _gl.TEXTURE_CUBE_MAP_POSITIVE_X + i, j, glInternalFormat, mipmap.width, mipmap.height, 0, glFormat, glType, mipmap.data );
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}
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}
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}
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}
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if ( ! isCompressed ) {
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textureProperties.__maxMipLevel = 0;
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} else {
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textureProperties.__maxMipLevel = mipmaps.length - 1;
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}
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if ( textureNeedsGenerateMipmaps( texture, isPowerOfTwoImage ) ) {
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// We assume images for cube map have the same size.
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generateMipmap( _gl.TEXTURE_CUBE_MAP, texture, image.width, image.height );
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}
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textureProperties.__version = texture.version;
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if ( texture.onUpdate ) texture.onUpdate( texture );
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} else {
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state.activeTexture( _gl.TEXTURE0 + slot );
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state.bindTexture( _gl.TEXTURE_CUBE_MAP, textureProperties.__image__webglTextureCube );
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}
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}
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}
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function setTextureCubeDynamic( texture, slot ) {
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state.activeTexture( _gl.TEXTURE0 + slot );
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state.bindTexture( _gl.TEXTURE_CUBE_MAP, properties.get( texture ).__webglTexture );
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}
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function setTextureParameters( textureType, texture, isPowerOfTwoImage ) {
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var extension;
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if ( isPowerOfTwoImage ) {
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_gl.texParameteri( textureType, _gl.TEXTURE_WRAP_S, utils.convert( texture.wrapS ) );
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_gl.texParameteri( textureType, _gl.TEXTURE_WRAP_T, utils.convert( texture.wrapT ) );
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_gl.texParameteri( textureType, _gl.TEXTURE_MAG_FILTER, utils.convert( texture.magFilter ) );
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_gl.texParameteri( textureType, _gl.TEXTURE_MIN_FILTER, utils.convert( texture.minFilter ) );
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} else {
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_gl.texParameteri( textureType, _gl.TEXTURE_WRAP_S, _gl.CLAMP_TO_EDGE );
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_gl.texParameteri( textureType, _gl.TEXTURE_WRAP_T, _gl.CLAMP_TO_EDGE );
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if ( texture.wrapS !== ClampToEdgeWrapping || texture.wrapT !== ClampToEdgeWrapping ) {
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console.warn( 'THREE.WebGLRenderer: Texture is not power of two. Texture.wrapS and Texture.wrapT should be set to THREE.ClampToEdgeWrapping.' );
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}
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_gl.texParameteri( textureType, _gl.TEXTURE_MAG_FILTER, filterFallback( texture.magFilter ) );
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_gl.texParameteri( textureType, _gl.TEXTURE_MIN_FILTER, filterFallback( texture.minFilter ) );
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if ( texture.minFilter !== NearestFilter && texture.minFilter !== LinearFilter ) {
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console.warn( 'THREE.WebGLRenderer: Texture is not power of two. Texture.minFilter should be set to THREE.NearestFilter or THREE.LinearFilter.' );
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}
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}
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extension = extensions.get( 'EXT_texture_filter_anisotropic' );
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if ( extension ) {
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if ( texture.type === FloatType && extensions.get( 'OES_texture_float_linear' ) === null ) return;
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if ( texture.type === HalfFloatType && ( capabilities.isWebGL2 || extensions.get( 'OES_texture_half_float_linear' ) ) === null ) return;
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if ( texture.anisotropy > 1 || properties.get( texture ).__currentAnisotropy ) {
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_gl.texParameterf( textureType, extension.TEXTURE_MAX_ANISOTROPY_EXT, Math.min( texture.anisotropy, capabilities.getMaxAnisotropy() ) );
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properties.get( texture ).__currentAnisotropy = texture.anisotropy;
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}
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}
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}
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function uploadTexture( textureProperties, texture, slot ) {
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var textureType;
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if ( texture.isDataTexture3D ) {
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textureType = _gl.TEXTURE_3D;
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} else {
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textureType = _gl.TEXTURE_2D;
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}
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if ( textureProperties.__webglInit === undefined ) {
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textureProperties.__webglInit = true;
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texture.addEventListener( 'dispose', onTextureDispose );
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textureProperties.__webglTexture = _gl.createTexture();
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info.memory.textures ++;
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}
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state.activeTexture( _gl.TEXTURE0 + slot );
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state.bindTexture( textureType, textureProperties.__webglTexture );
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_gl.pixelStorei( _gl.UNPACK_FLIP_Y_WEBGL, texture.flipY );
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_gl.pixelStorei( _gl.UNPACK_PREMULTIPLY_ALPHA_WEBGL, texture.premultiplyAlpha );
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_gl.pixelStorei( _gl.UNPACK_ALIGNMENT, texture.unpackAlignment );
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var image = clampToMaxSize( texture.image, capabilities.maxTextureSize );
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if ( textureNeedsPowerOfTwo( texture ) && isPowerOfTwo( image ) === false ) {
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image = makePowerOfTwo( image );
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}
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var isPowerOfTwoImage = isPowerOfTwo( image ),
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glFormat = utils.convert( texture.format ),
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glType = utils.convert( texture.type ),
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glInternalFormat = getInternalFormat( glFormat, glType );
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setTextureParameters( textureType, texture, isPowerOfTwoImage );
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var mipmap, mipmaps = texture.mipmaps;
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if ( texture.isDepthTexture ) {
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// populate depth texture with dummy data
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glInternalFormat = _gl.DEPTH_COMPONENT;
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if ( texture.type === FloatType ) {
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if ( ! capabilities.isWebGL2 ) throw new Error( 'Float Depth Texture only supported in WebGL2.0' );
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glInternalFormat = _gl.DEPTH_COMPONENT32F;
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} else if ( capabilities.isWebGL2 ) {
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// WebGL 2.0 requires signed internalformat for glTexImage2D
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glInternalFormat = _gl.DEPTH_COMPONENT16;
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}
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if ( texture.format === DepthFormat && glInternalFormat === _gl.DEPTH_COMPONENT ) {
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// The error INVALID_OPERATION is generated by texImage2D if format and internalformat are
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// DEPTH_COMPONENT and type is not UNSIGNED_SHORT or UNSIGNED_INT
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// (https://www.khronos.org/registry/webgl/extensions/WEBGL_depth_texture/)
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if ( texture.type !== UnsignedShortType && texture.type !== UnsignedIntType ) {
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console.warn( 'THREE.WebGLRenderer: Use UnsignedShortType or UnsignedIntType for DepthFormat DepthTexture.' );
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texture.type = UnsignedShortType;
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glType = utils.convert( texture.type );
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|
|
|
}
|
|
|
|
}
|
|
|
|
// Depth stencil textures need the DEPTH_STENCIL internal format
|
|
// (https://www.khronos.org/registry/webgl/extensions/WEBGL_depth_texture/)
|
|
if ( texture.format === DepthStencilFormat ) {
|
|
|
|
glInternalFormat = _gl.DEPTH_STENCIL;
|
|
|
|
// The error INVALID_OPERATION is generated by texImage2D if format and internalformat are
|
|
// DEPTH_STENCIL and type is not UNSIGNED_INT_24_8_WEBGL.
|
|
// (https://www.khronos.org/registry/webgl/extensions/WEBGL_depth_texture/)
|
|
if ( texture.type !== UnsignedInt248Type ) {
|
|
|
|
console.warn( 'THREE.WebGLRenderer: Use UnsignedInt248Type for DepthStencilFormat DepthTexture.' );
|
|
|
|
texture.type = UnsignedInt248Type;
|
|
glType = utils.convert( texture.type );
|
|
|
|
}
|
|
|
|
}
|
|
|
|
state.texImage2D( _gl.TEXTURE_2D, 0, glInternalFormat, image.width, image.height, 0, glFormat, glType, null );
|
|
|
|
} else if ( texture.isDataTexture ) {
|
|
|
|
// use manually created mipmaps if available
|
|
// if there are no manual mipmaps
|
|
// set 0 level mipmap and then use GL to generate other mipmap levels
|
|
|
|
if ( mipmaps.length > 0 && isPowerOfTwoImage ) {
|
|
|
|
for ( var i = 0, il = mipmaps.length; i < il; i ++ ) {
|
|
|
|
mipmap = mipmaps[ i ];
|
|
state.texImage2D( _gl.TEXTURE_2D, i, glInternalFormat, mipmap.width, mipmap.height, 0, glFormat, glType, mipmap.data );
|
|
|
|
}
|
|
|
|
texture.generateMipmaps = false;
|
|
textureProperties.__maxMipLevel = mipmaps.length - 1;
|
|
|
|
} else {
|
|
|
|
state.texImage2D( _gl.TEXTURE_2D, 0, glInternalFormat, image.width, image.height, 0, glFormat, glType, image.data );
|
|
textureProperties.__maxMipLevel = 0;
|
|
|
|
}
|
|
|
|
} else if ( texture.isCompressedTexture ) {
|
|
|
|
for ( var i = 0, il = mipmaps.length; i < il; i ++ ) {
|
|
|
|
mipmap = mipmaps[ i ];
|
|
|
|
if ( texture.format !== RGBAFormat && texture.format !== RGBFormat ) {
|
|
|
|
if ( state.getCompressedTextureFormats().indexOf( glFormat ) > - 1 ) {
|
|
|
|
state.compressedTexImage2D( _gl.TEXTURE_2D, i, glInternalFormat, mipmap.width, mipmap.height, 0, mipmap.data );
|
|
|
|
} else {
|
|
|
|
console.warn( 'THREE.WebGLRenderer: Attempt to load unsupported compressed texture format in .uploadTexture()' );
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
state.texImage2D( _gl.TEXTURE_2D, i, glInternalFormat, mipmap.width, mipmap.height, 0, glFormat, glType, mipmap.data );
|
|
|
|
}
|
|
|
|
}
|
|
|
|
textureProperties.__maxMipLevel = mipmaps.length - 1;
|
|
|
|
} else if ( texture.isDataTexture3D ) {
|
|
|
|
state.texImage3D( _gl.TEXTURE_3D, 0, glInternalFormat, image.width, image.height, image.depth, 0, glFormat, glType, image.data );
|
|
textureProperties.__maxMipLevel = 0;
|
|
|
|
} else {
|
|
|
|
// regular Texture (image, video, canvas)
|
|
|
|
// use manually created mipmaps if available
|
|
// if there are no manual mipmaps
|
|
// set 0 level mipmap and then use GL to generate other mipmap levels
|
|
|
|
if ( mipmaps.length > 0 && isPowerOfTwoImage ) {
|
|
|
|
for ( var i = 0, il = mipmaps.length; i < il; i ++ ) {
|
|
|
|
mipmap = mipmaps[ i ];
|
|
state.texImage2D( _gl.TEXTURE_2D, i, glInternalFormat, glFormat, glType, mipmap );
|
|
|
|
}
|
|
|
|
texture.generateMipmaps = false;
|
|
textureProperties.__maxMipLevel = mipmaps.length - 1;
|
|
|
|
} else {
|
|
|
|
state.texImage2D( _gl.TEXTURE_2D, 0, glInternalFormat, glFormat, glType, image );
|
|
textureProperties.__maxMipLevel = 0;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
if ( textureNeedsGenerateMipmaps( texture, isPowerOfTwoImage ) ) {
|
|
|
|
generateMipmap( _gl.TEXTURE_2D, texture, image.width, image.height );
|
|
|
|
}
|
|
|
|
textureProperties.__version = texture.version;
|
|
|
|
if ( texture.onUpdate ) texture.onUpdate( texture );
|
|
|
|
}
|
|
|
|
// Render targets
|
|
|
|
// Setup storage for target texture and bind it to correct framebuffer
|
|
function setupFrameBufferTexture( framebuffer, renderTarget, attachment, textureTarget ) {
|
|
|
|
var glFormat = utils.convert( renderTarget.texture.format );
|
|
var glType = utils.convert( renderTarget.texture.type );
|
|
var glInternalFormat = getInternalFormat( glFormat, glType );
|
|
state.texImage2D( textureTarget, 0, glInternalFormat, renderTarget.width, renderTarget.height, 0, glFormat, glType, null );
|
|
_gl.bindFramebuffer( _gl.FRAMEBUFFER, framebuffer );
|
|
_gl.framebufferTexture2D( _gl.FRAMEBUFFER, attachment, textureTarget, properties.get( renderTarget.texture ).__webglTexture, 0 );
|
|
_gl.bindFramebuffer( _gl.FRAMEBUFFER, null );
|
|
|
|
}
|
|
|
|
// Setup storage for internal depth/stencil buffers and bind to correct framebuffer
|
|
function setupRenderBufferStorage( renderbuffer, renderTarget ) {
|
|
|
|
_gl.bindRenderbuffer( _gl.RENDERBUFFER, renderbuffer );
|
|
|
|
if ( renderTarget.depthBuffer && ! renderTarget.stencilBuffer ) {
|
|
|
|
_gl.renderbufferStorage( _gl.RENDERBUFFER, _gl.DEPTH_COMPONENT16, renderTarget.width, renderTarget.height );
|
|
_gl.framebufferRenderbuffer( _gl.FRAMEBUFFER, _gl.DEPTH_ATTACHMENT, _gl.RENDERBUFFER, renderbuffer );
|
|
|
|
} else if ( renderTarget.depthBuffer && renderTarget.stencilBuffer ) {
|
|
|
|
_gl.renderbufferStorage( _gl.RENDERBUFFER, _gl.DEPTH_STENCIL, renderTarget.width, renderTarget.height );
|
|
_gl.framebufferRenderbuffer( _gl.FRAMEBUFFER, _gl.DEPTH_STENCIL_ATTACHMENT, _gl.RENDERBUFFER, renderbuffer );
|
|
|
|
} else {
|
|
|
|
// FIXME: We don't support !depth !stencil
|
|
_gl.renderbufferStorage( _gl.RENDERBUFFER, _gl.RGBA4, renderTarget.width, renderTarget.height );
|
|
|
|
}
|
|
|
|
_gl.bindRenderbuffer( _gl.RENDERBUFFER, null );
|
|
|
|
}
|
|
|
|
// Setup resources for a Depth Texture for a FBO (needs an extension)
|
|
function setupDepthTexture( framebuffer, renderTarget ) {
|
|
|
|
var isCube = ( renderTarget && renderTarget.isWebGLRenderTargetCube );
|
|
if ( isCube ) throw new Error( 'Depth Texture with cube render targets is not supported' );
|
|
|
|
_gl.bindFramebuffer( _gl.FRAMEBUFFER, framebuffer );
|
|
|
|
if ( ! ( renderTarget.depthTexture && renderTarget.depthTexture.isDepthTexture ) ) {
|
|
|
|
throw new Error( 'renderTarget.depthTexture must be an instance of THREE.DepthTexture' );
|
|
|
|
}
|
|
|
|
// upload an empty depth texture with framebuffer size
|
|
if ( ! properties.get( renderTarget.depthTexture ).__webglTexture ||
|
|
renderTarget.depthTexture.image.width !== renderTarget.width ||
|
|
renderTarget.depthTexture.image.height !== renderTarget.height ) {
|
|
|
|
renderTarget.depthTexture.image.width = renderTarget.width;
|
|
renderTarget.depthTexture.image.height = renderTarget.height;
|
|
renderTarget.depthTexture.needsUpdate = true;
|
|
|
|
}
|
|
|
|
setTexture2D( renderTarget.depthTexture, 0 );
|
|
|
|
var webglDepthTexture = properties.get( renderTarget.depthTexture ).__webglTexture;
|
|
|
|
if ( renderTarget.depthTexture.format === DepthFormat ) {
|
|
|
|
_gl.framebufferTexture2D( _gl.FRAMEBUFFER, _gl.DEPTH_ATTACHMENT, _gl.TEXTURE_2D, webglDepthTexture, 0 );
|
|
|
|
} else if ( renderTarget.depthTexture.format === DepthStencilFormat ) {
|
|
|
|
_gl.framebufferTexture2D( _gl.FRAMEBUFFER, _gl.DEPTH_STENCIL_ATTACHMENT, _gl.TEXTURE_2D, webglDepthTexture, 0 );
|
|
|
|
} else {
|
|
|
|
throw new Error( 'Unknown depthTexture format' );
|
|
|
|
}
|
|
|
|
}
|
|
|
|
// Setup GL resources for a non-texture depth buffer
|
|
function setupDepthRenderbuffer( renderTarget ) {
|
|
|
|
var renderTargetProperties = properties.get( renderTarget );
|
|
|
|
var isCube = ( renderTarget.isWebGLRenderTargetCube === true );
|
|
|
|
if ( renderTarget.depthTexture ) {
|
|
|
|
if ( isCube ) throw new Error( 'target.depthTexture not supported in Cube render targets' );
|
|
|
|
setupDepthTexture( renderTargetProperties.__webglFramebuffer, renderTarget );
|
|
|
|
} else {
|
|
|
|
if ( isCube ) {
|
|
|
|
renderTargetProperties.__webglDepthbuffer = [];
|
|
|
|
for ( var i = 0; i < 6; i ++ ) {
|
|
|
|
_gl.bindFramebuffer( _gl.FRAMEBUFFER, renderTargetProperties.__webglFramebuffer[ i ] );
|
|
renderTargetProperties.__webglDepthbuffer[ i ] = _gl.createRenderbuffer();
|
|
setupRenderBufferStorage( renderTargetProperties.__webglDepthbuffer[ i ], renderTarget );
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
_gl.bindFramebuffer( _gl.FRAMEBUFFER, renderTargetProperties.__webglFramebuffer );
|
|
renderTargetProperties.__webglDepthbuffer = _gl.createRenderbuffer();
|
|
setupRenderBufferStorage( renderTargetProperties.__webglDepthbuffer, renderTarget );
|
|
|
|
}
|
|
|
|
}
|
|
|
|
_gl.bindFramebuffer( _gl.FRAMEBUFFER, null );
|
|
|
|
}
|
|
|
|
// Set up GL resources for the render target
|
|
function setupRenderTarget( renderTarget ) {
|
|
|
|
var renderTargetProperties = properties.get( renderTarget );
|
|
var textureProperties = properties.get( renderTarget.texture );
|
|
|
|
renderTarget.addEventListener( 'dispose', onRenderTargetDispose );
|
|
|
|
textureProperties.__webglTexture = _gl.createTexture();
|
|
|
|
info.memory.textures ++;
|
|
|
|
var isCube = ( renderTarget.isWebGLRenderTargetCube === true );
|
|
var isTargetPowerOfTwo = isPowerOfTwo( renderTarget );
|
|
|
|
// Setup framebuffer
|
|
|
|
if ( isCube ) {
|
|
|
|
renderTargetProperties.__webglFramebuffer = [];
|
|
|
|
for ( var i = 0; i < 6; i ++ ) {
|
|
|
|
renderTargetProperties.__webglFramebuffer[ i ] = _gl.createFramebuffer();
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
renderTargetProperties.__webglFramebuffer = _gl.createFramebuffer();
|
|
|
|
}
|
|
|
|
// Setup color buffer
|
|
|
|
if ( isCube ) {
|
|
|
|
state.bindTexture( _gl.TEXTURE_CUBE_MAP, textureProperties.__webglTexture );
|
|
setTextureParameters( _gl.TEXTURE_CUBE_MAP, renderTarget.texture, isTargetPowerOfTwo );
|
|
|
|
for ( var i = 0; i < 6; i ++ ) {
|
|
|
|
setupFrameBufferTexture( renderTargetProperties.__webglFramebuffer[ i ], renderTarget, _gl.COLOR_ATTACHMENT0, _gl.TEXTURE_CUBE_MAP_POSITIVE_X + i );
|
|
|
|
}
|
|
|
|
if ( textureNeedsGenerateMipmaps( renderTarget.texture, isTargetPowerOfTwo ) ) {
|
|
|
|
generateMipmap( _gl.TEXTURE_CUBE_MAP, renderTarget.texture, renderTarget.width, renderTarget.height );
|
|
|
|
}
|
|
|
|
state.bindTexture( _gl.TEXTURE_CUBE_MAP, null );
|
|
|
|
} else {
|
|
|
|
state.bindTexture( _gl.TEXTURE_2D, textureProperties.__webglTexture );
|
|
setTextureParameters( _gl.TEXTURE_2D, renderTarget.texture, isTargetPowerOfTwo );
|
|
setupFrameBufferTexture( renderTargetProperties.__webglFramebuffer, renderTarget, _gl.COLOR_ATTACHMENT0, _gl.TEXTURE_2D );
|
|
|
|
if ( textureNeedsGenerateMipmaps( renderTarget.texture, isTargetPowerOfTwo ) ) {
|
|
|
|
generateMipmap( _gl.TEXTURE_2D, renderTarget.texture, renderTarget.width, renderTarget.height );
|
|
|
|
}
|
|
|
|
state.bindTexture( _gl.TEXTURE_2D, null );
|
|
|
|
}
|
|
|
|
// Setup depth and stencil buffers
|
|
|
|
if ( renderTarget.depthBuffer ) {
|
|
|
|
setupDepthRenderbuffer( renderTarget );
|
|
|
|
}
|
|
|
|
}
|
|
|
|
function updateRenderTargetMipmap( renderTarget ) {
|
|
|
|
var texture = renderTarget.texture;
|
|
var isTargetPowerOfTwo = isPowerOfTwo( renderTarget );
|
|
|
|
if ( textureNeedsGenerateMipmaps( texture, isTargetPowerOfTwo ) ) {
|
|
|
|
var target = renderTarget.isWebGLRenderTargetCube ? _gl.TEXTURE_CUBE_MAP : _gl.TEXTURE_2D;
|
|
var webglTexture = properties.get( texture ).__webglTexture;
|
|
|
|
state.bindTexture( target, webglTexture );
|
|
generateMipmap( target, texture, renderTarget.width, renderTarget.height );
|
|
state.bindTexture( target, null );
|
|
|
|
}
|
|
|
|
}
|
|
|
|
function updateVideoTexture( texture ) {
|
|
|
|
var id = texture.id;
|
|
var frame = info.render.frame;
|
|
|
|
// Check the last frame we updated the VideoTexture
|
|
|
|
if ( _videoTextures[ id ] !== frame ) {
|
|
|
|
_videoTextures[ id ] = frame;
|
|
texture.update();
|
|
|
|
}
|
|
|
|
}
|
|
|
|
this.setTexture2D = setTexture2D;
|
|
this.setTexture3D = setTexture3D;
|
|
this.setTextureCube = setTextureCube;
|
|
this.setTextureCubeDynamic = setTextureCubeDynamic;
|
|
this.setupRenderTarget = setupRenderTarget;
|
|
this.updateRenderTargetMipmap = updateRenderTargetMipmap;
|
|
|
|
}
|
|
|
|
|
|
export { WebGLTextures };
|