import { LinearFilter, LinearMipmapLinearFilter, LinearMipmapNearestFilter, NearestFilter, NearestMipmapLinearFilter, NearestMipmapNearestFilter, RGBFormat, RGBAFormat, DepthFormat, DepthStencilFormat, UnsignedShortType, UnsignedIntType, UnsignedInt248Type, FloatType, HalfFloatType, MirroredRepeatWrapping, ClampToEdgeWrapping, RepeatWrapping } from '../../constants.js'; import * as MathUtils from '../../math/MathUtils.js'; function WebGLTextures( _gl, extensions, state, properties, capabilities, utils, info ) { const isWebGL2 = capabilities.isWebGL2; const maxTextures = capabilities.maxTextures; const maxCubemapSize = capabilities.maxCubemapSize; const maxTextureSize = capabilities.maxTextureSize; const maxSamples = capabilities.maxSamples; const _videoTextures = new WeakMap(); let _canvas; // cordova iOS (as of 5.0) still uses UIWebView, which provides OffscreenCanvas, // also OffscreenCanvas.getContext("webgl"), but not OffscreenCanvas.getContext("2d")! // Some implementations may only implement OffscreenCanvas partially (e.g. lacking 2d). let useOffscreenCanvas = false; try { useOffscreenCanvas = typeof OffscreenCanvas !== 'undefined' && ( new OffscreenCanvas( 1, 1 ).getContext( '2d' ) ) !== null; } catch ( err ) { // Ignore any errors } function createCanvas( width, height ) { // Use OffscreenCanvas when available. Specially needed in web workers return useOffscreenCanvas ? new OffscreenCanvas( width, height ) : document.createElementNS( 'http://www.w3.org/1999/xhtml', 'canvas' ); } function resizeImage( image, needsPowerOfTwo, needsNewCanvas, maxSize ) { let scale = 1; // handle case if texture exceeds max size if ( image.width > maxSize || image.height > maxSize ) { scale = maxSize / Math.max( image.width, image.height ); } // only perform resize if necessary if ( scale < 1 || needsPowerOfTwo === true ) { // only perform resize for certain image types if ( ( typeof HTMLImageElement !== 'undefined' && image instanceof HTMLImageElement ) || ( typeof HTMLCanvasElement !== 'undefined' && image instanceof HTMLCanvasElement ) || ( typeof ImageBitmap !== 'undefined' && image instanceof ImageBitmap ) ) { const floor = needsPowerOfTwo ? MathUtils.floorPowerOfTwo : Math.floor; const width = floor( scale * image.width ); const height = floor( scale * image.height ); if ( _canvas === undefined ) _canvas = createCanvas( width, height ); // cube textures can't reuse the same canvas const canvas = needsNewCanvas ? createCanvas( width, height ) : _canvas; canvas.width = width; canvas.height = height; const context = canvas.getContext( '2d' ); context.drawImage( image, 0, 0, width, height ); console.warn( 'THREE.WebGLRenderer: Texture has been resized from (' + image.width + 'x' + image.height + ') to (' + width + 'x' + height + ').' ); return canvas; } else { if ( 'data' in image ) { console.warn( 'THREE.WebGLRenderer: Image in DataTexture is too big (' + image.width + 'x' + image.height + ').' ); } return image; } } return image; } function isPowerOfTwo( image ) { return MathUtils.isPowerOfTwo( image.width ) && MathUtils.isPowerOfTwo( image.height ); } function textureNeedsPowerOfTwo( texture ) { if ( isWebGL2 ) return false; return ( texture.wrapS !== ClampToEdgeWrapping || texture.wrapT !== ClampToEdgeWrapping ) || ( texture.minFilter !== NearestFilter && texture.minFilter !== LinearFilter ); } function textureNeedsGenerateMipmaps( texture, supportsMips ) { return texture.generateMipmaps && supportsMips && texture.minFilter !== NearestFilter && texture.minFilter !== LinearFilter; } function generateMipmap( target, texture, width, height, depth = 1 ) { _gl.generateMipmap( target ); const textureProperties = properties.get( texture ); textureProperties.__maxMipLevel = Math.log2( Math.max( width, height, depth ) ); } function getInternalFormat( internalFormatName, glFormat, glType ) { if ( isWebGL2 === false ) return glFormat; if ( internalFormatName !== null ) { if ( _gl[ internalFormatName ] !== undefined ) return _gl[ internalFormatName ]; console.warn( 'THREE.WebGLRenderer: Attempt to use non-existing WebGL internal format \'' + internalFormatName + '\'' ); } let internalFormat = glFormat; if ( glFormat === _gl.RED ) { if ( glType === _gl.FLOAT ) internalFormat = _gl.R32F; if ( glType === _gl.HALF_FLOAT ) internalFormat = _gl.R16F; if ( glType === _gl.UNSIGNED_BYTE ) internalFormat = _gl.R8; } if ( glFormat === _gl.RGB ) { if ( glType === _gl.FLOAT ) internalFormat = _gl.RGB32F; if ( glType === _gl.HALF_FLOAT ) internalFormat = _gl.RGB16F; if ( glType === _gl.UNSIGNED_BYTE ) internalFormat = _gl.RGB8; } if ( glFormat === _gl.RGBA ) { if ( glType === _gl.FLOAT ) internalFormat = _gl.RGBA32F; if ( glType === _gl.HALF_FLOAT ) internalFormat = _gl.RGBA16F; if ( glType === _gl.UNSIGNED_BYTE ) internalFormat = _gl.RGBA8; } if ( internalFormat === _gl.R16F || internalFormat === _gl.R32F || internalFormat === _gl.RGBA16F || internalFormat === _gl.RGBA32F ) { extensions.get( 'EXT_color_buffer_float' ); } return internalFormat; } // Fallback filters for non-power-of-2 textures function filterFallback( f ) { if ( f === NearestFilter || f === NearestMipmapNearestFilter || f === NearestMipmapLinearFilter ) { return _gl.NEAREST; } return _gl.LINEAR; } // function onTextureDispose( event ) { const texture = event.target; texture.removeEventListener( 'dispose', onTextureDispose ); deallocateTexture( texture ); if ( texture.isVideoTexture ) { _videoTextures.delete( texture ); } info.memory.textures --; } function onRenderTargetDispose( event ) { const renderTarget = event.target; renderTarget.removeEventListener( 'dispose', onRenderTargetDispose ); deallocateRenderTarget( renderTarget ); } // function deallocateTexture( texture ) { const textureProperties = properties.get( texture ); if ( textureProperties.__webglInit === undefined ) return; _gl.deleteTexture( textureProperties.__webglTexture ); properties.remove( texture ); } function deallocateRenderTarget( renderTarget ) { const texture = renderTarget.texture; const renderTargetProperties = properties.get( renderTarget ); const textureProperties = properties.get( texture ); if ( ! renderTarget ) return; if ( textureProperties.__webglTexture !== undefined ) { _gl.deleteTexture( textureProperties.__webglTexture ); info.memory.textures --; } if ( renderTarget.depthTexture ) { renderTarget.depthTexture.dispose(); } if ( renderTarget.isWebGLCubeRenderTarget ) { for ( let i = 0; i < 6; i ++ ) { _gl.deleteFramebuffer( renderTargetProperties.__webglFramebuffer[ i ] ); if ( renderTargetProperties.__webglDepthbuffer ) _gl.deleteRenderbuffer( renderTargetProperties.__webglDepthbuffer[ i ] ); } } else { _gl.deleteFramebuffer( renderTargetProperties.__webglFramebuffer ); if ( renderTargetProperties.__webglDepthbuffer ) _gl.deleteRenderbuffer( renderTargetProperties.__webglDepthbuffer ); if ( renderTargetProperties.__webglMultisampledFramebuffer ) _gl.deleteFramebuffer( renderTargetProperties.__webglMultisampledFramebuffer ); if ( renderTargetProperties.__webglColorRenderbuffer ) _gl.deleteRenderbuffer( renderTargetProperties.__webglColorRenderbuffer ); if ( renderTargetProperties.__webglDepthRenderbuffer ) _gl.deleteRenderbuffer( renderTargetProperties.__webglDepthRenderbuffer ); } if ( renderTarget.isWebGLMultipleRenderTargets ) { for ( let i = 0, il = texture.length; i < il; i ++ ) { const attachmentProperties = properties.get( texture[ i ] ); if ( attachmentProperties.__webglTexture ) { _gl.deleteTexture( attachmentProperties.__webglTexture ); info.memory.textures --; } properties.remove( texture[ i ] ); } } properties.remove( texture ); properties.remove( renderTarget ); } // let textureUnits = 0; function resetTextureUnits() { textureUnits = 0; } function allocateTextureUnit() { const textureUnit = textureUnits; if ( textureUnit >= maxTextures ) { console.warn( 'THREE.WebGLTextures: Trying to use ' + textureUnit + ' texture units while this GPU supports only ' + maxTextures ); } textureUnits += 1; return textureUnit; } // function setTexture2D( texture, slot ) { const textureProperties = properties.get( texture ); if ( texture.isVideoTexture ) updateVideoTexture( texture ); if ( texture.version > 0 && textureProperties.__version !== texture.version ) { const image = texture.image; if ( image === undefined ) { console.warn( 'THREE.WebGLRenderer: Texture marked for update but image is undefined' ); } else if ( image.complete === false ) { console.warn( 'THREE.WebGLRenderer: Texture marked for update but image is incomplete' ); } else { uploadTexture( textureProperties, texture, slot ); return; } } state.activeTexture( _gl.TEXTURE0 + slot ); state.bindTexture( _gl.TEXTURE_2D, textureProperties.__webglTexture ); } function setTexture2DArray( texture, slot ) { const textureProperties = properties.get( texture ); if ( texture.version > 0 && textureProperties.__version !== texture.version ) { uploadTexture( textureProperties, texture, slot ); return; } state.activeTexture( _gl.TEXTURE0 + slot ); state.bindTexture( _gl.TEXTURE_2D_ARRAY, textureProperties.__webglTexture ); } function setTexture3D( texture, slot ) { const textureProperties = properties.get( texture ); if ( texture.version > 0 && textureProperties.__version !== texture.version ) { uploadTexture( textureProperties, texture, slot ); return; } state.activeTexture( _gl.TEXTURE0 + slot ); state.bindTexture( _gl.TEXTURE_3D, textureProperties.__webglTexture ); } function setTextureCube( texture, slot ) { const textureProperties = properties.get( texture ); if ( texture.version > 0 && textureProperties.__version !== texture.version ) { uploadCubeTexture( textureProperties, texture, slot ); return; } state.activeTexture( _gl.TEXTURE0 + slot ); state.bindTexture( _gl.TEXTURE_CUBE_MAP, textureProperties.__webglTexture ); } const wrappingToGL = { [ RepeatWrapping ]: _gl.REPEAT, [ ClampToEdgeWrapping ]: _gl.CLAMP_TO_EDGE, [ MirroredRepeatWrapping ]: _gl.MIRRORED_REPEAT }; const filterToGL = { [ NearestFilter ]: _gl.NEAREST, [ NearestMipmapNearestFilter ]: _gl.NEAREST_MIPMAP_NEAREST, [ NearestMipmapLinearFilter ]: _gl.NEAREST_MIPMAP_LINEAR, [ LinearFilter ]: _gl.LINEAR, [ LinearMipmapNearestFilter ]: _gl.LINEAR_MIPMAP_NEAREST, [ LinearMipmapLinearFilter ]: _gl.LINEAR_MIPMAP_LINEAR }; function setTextureParameters( textureType, texture, supportsMips ) { if ( supportsMips ) { _gl.texParameteri( textureType, _gl.TEXTURE_WRAP_S, wrappingToGL[ texture.wrapS ] ); _gl.texParameteri( textureType, _gl.TEXTURE_WRAP_T, wrappingToGL[ texture.wrapT ] ); if ( textureType === _gl.TEXTURE_3D || textureType === _gl.TEXTURE_2D_ARRAY ) { _gl.texParameteri( textureType, _gl.TEXTURE_WRAP_R, wrappingToGL[ texture.wrapR ] ); } _gl.texParameteri( textureType, _gl.TEXTURE_MAG_FILTER, filterToGL[ texture.magFilter ] ); _gl.texParameteri( textureType, _gl.TEXTURE_MIN_FILTER, filterToGL[ texture.minFilter ] ); } else { _gl.texParameteri( textureType, _gl.TEXTURE_WRAP_S, _gl.CLAMP_TO_EDGE ); _gl.texParameteri( textureType, _gl.TEXTURE_WRAP_T, _gl.CLAMP_TO_EDGE ); if ( textureType === _gl.TEXTURE_3D || textureType === _gl.TEXTURE_2D_ARRAY ) { _gl.texParameteri( textureType, _gl.TEXTURE_WRAP_R, _gl.CLAMP_TO_EDGE ); } if ( texture.wrapS !== ClampToEdgeWrapping || texture.wrapT !== ClampToEdgeWrapping ) { console.warn( 'THREE.WebGLRenderer: Texture is not power of two. Texture.wrapS and Texture.wrapT should be set to THREE.ClampToEdgeWrapping.' ); } _gl.texParameteri( textureType, _gl.TEXTURE_MAG_FILTER, filterFallback( texture.magFilter ) ); _gl.texParameteri( textureType, _gl.TEXTURE_MIN_FILTER, filterFallback( texture.minFilter ) ); if ( texture.minFilter !== NearestFilter && texture.minFilter !== LinearFilter ) { console.warn( 'THREE.WebGLRenderer: Texture is not power of two. Texture.minFilter should be set to THREE.NearestFilter or THREE.LinearFilter.' ); } } if ( extensions.has( 'EXT_texture_filter_anisotropic' ) === true ) { const extension = extensions.get( 'EXT_texture_filter_anisotropic' ); if ( texture.type === FloatType && extensions.has( 'OES_texture_float_linear' ) === false ) return; // verify extension for WebGL 1 and WebGL 2 if ( isWebGL2 === false && ( texture.type === HalfFloatType && extensions.has( 'OES_texture_half_float_linear' ) === false ) ) return; // verify extension for WebGL 1 only if ( texture.anisotropy > 1 || properties.get( texture ).__currentAnisotropy ) { _gl.texParameterf( textureType, extension.TEXTURE_MAX_ANISOTROPY_EXT, Math.min( texture.anisotropy, capabilities.getMaxAnisotropy() ) ); properties.get( texture ).__currentAnisotropy = texture.anisotropy; } } } function initTexture( textureProperties, texture ) { if ( textureProperties.__webglInit === undefined ) { textureProperties.__webglInit = true; texture.addEventListener( 'dispose', onTextureDispose ); textureProperties.__webglTexture = _gl.createTexture(); info.memory.textures ++; } } function uploadTexture( textureProperties, texture, slot ) { let textureType = _gl.TEXTURE_2D; if ( texture.isDataTexture2DArray ) textureType = _gl.TEXTURE_2D_ARRAY; if ( texture.isDataTexture3D ) textureType = _gl.TEXTURE_3D; initTexture( textureProperties, texture ); state.activeTexture( _gl.TEXTURE0 + slot ); state.bindTexture( textureType, textureProperties.__webglTexture ); _gl.pixelStorei( _gl.UNPACK_FLIP_Y_WEBGL, texture.flipY ); _gl.pixelStorei( _gl.UNPACK_PREMULTIPLY_ALPHA_WEBGL, texture.premultiplyAlpha ); _gl.pixelStorei( _gl.UNPACK_ALIGNMENT, texture.unpackAlignment ); _gl.pixelStorei( _gl.UNPACK_COLORSPACE_CONVERSION_WEBGL, _gl.NONE ); const needsPowerOfTwo = textureNeedsPowerOfTwo( texture ) && isPowerOfTwo( texture.image ) === false; const image = resizeImage( texture.image, needsPowerOfTwo, false, maxTextureSize ); const supportsMips = isPowerOfTwo( image ) || isWebGL2, glFormat = utils.convert( texture.format ); let glType = utils.convert( texture.type ), glInternalFormat = getInternalFormat( texture.internalFormat, glFormat, glType ); setTextureParameters( textureType, texture, supportsMips ); let mipmap; const mipmaps = texture.mipmaps; if ( texture.isDepthTexture ) { // populate depth texture with dummy data glInternalFormat = _gl.DEPTH_COMPONENT; if ( isWebGL2 ) { if ( texture.type === FloatType ) { glInternalFormat = _gl.DEPTH_COMPONENT32F; } else if ( texture.type === UnsignedIntType ) { glInternalFormat = _gl.DEPTH_COMPONENT24; } else if ( texture.type === UnsignedInt248Type ) { glInternalFormat = _gl.DEPTH24_STENCIL8; } else { glInternalFormat = _gl.DEPTH_COMPONENT16; // WebGL2 requires sized internalformat for glTexImage2D } } else { if ( texture.type === FloatType ) { console.error( 'WebGLRenderer: Floating point depth texture requires WebGL2.' ); } } // validation checks for WebGL 1 if ( texture.format === DepthFormat && glInternalFormat === _gl.DEPTH_COMPONENT ) { // The error INVALID_OPERATION is generated by texImage2D if format and internalformat are // DEPTH_COMPONENT and type is not UNSIGNED_SHORT or UNSIGNED_INT // (https://www.khronos.org/registry/webgl/extensions/WEBGL_depth_texture/) if ( texture.type !== UnsignedShortType && texture.type !== UnsignedIntType ) { console.warn( 'THREE.WebGLRenderer: Use UnsignedShortType or UnsignedIntType for DepthFormat DepthTexture.' ); texture.type = UnsignedShortType; glType = utils.convert( texture.type ); } } if ( texture.format === DepthStencilFormat && glInternalFormat === _gl.DEPTH_COMPONENT ) { // Depth stencil textures need the DEPTH_STENCIL internal format // (https://www.khronos.org/registry/webgl/extensions/WEBGL_depth_texture/) 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 && supportsMips ) { for ( let 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 ( let i = 0, il = mipmaps.length; i < il; i ++ ) { mipmap = mipmaps[ i ]; if ( texture.format !== RGBAFormat && texture.format !== RGBFormat ) { if ( glFormat !== null ) { 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.isDataTexture2DArray ) { state.texImage3D( _gl.TEXTURE_2D_ARRAY, 0, glInternalFormat, image.width, image.height, image.depth, 0, glFormat, glType, image.data ); textureProperties.__maxMipLevel = 0; } 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 && supportsMips ) { for ( let 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, supportsMips ) ) { generateMipmap( textureType, texture, image.width, image.height ); } textureProperties.__version = texture.version; if ( texture.onUpdate ) texture.onUpdate( texture ); } function uploadCubeTexture( textureProperties, texture, slot ) { if ( texture.image.length !== 6 ) return; initTexture( textureProperties, texture ); state.activeTexture( _gl.TEXTURE0 + slot ); state.bindTexture( _gl.TEXTURE_CUBE_MAP, textureProperties.__webglTexture ); _gl.pixelStorei( _gl.UNPACK_FLIP_Y_WEBGL, texture.flipY ); _gl.pixelStorei( _gl.UNPACK_PREMULTIPLY_ALPHA_WEBGL, texture.premultiplyAlpha ); _gl.pixelStorei( _gl.UNPACK_ALIGNMENT, texture.unpackAlignment ); _gl.pixelStorei( _gl.UNPACK_COLORSPACE_CONVERSION_WEBGL, _gl.NONE ); const isCompressed = ( texture && ( texture.isCompressedTexture || texture.image[ 0 ].isCompressedTexture ) ); const isDataTexture = ( texture.image[ 0 ] && texture.image[ 0 ].isDataTexture ); const cubeImage = []; for ( let i = 0; i < 6; i ++ ) { if ( ! isCompressed && ! isDataTexture ) { cubeImage[ i ] = resizeImage( texture.image[ i ], false, true, maxCubemapSize ); } else { cubeImage[ i ] = isDataTexture ? texture.image[ i ].image : texture.image[ i ]; } } const image = cubeImage[ 0 ], supportsMips = isPowerOfTwo( image ) || isWebGL2, glFormat = utils.convert( texture.format ), glType = utils.convert( texture.type ), glInternalFormat = getInternalFormat( texture.internalFormat, glFormat, glType ); setTextureParameters( _gl.TEXTURE_CUBE_MAP, texture, supportsMips ); let mipmaps; if ( isCompressed ) { for ( let i = 0; i < 6; i ++ ) { mipmaps = cubeImage[ i ].mipmaps; for ( let j = 0; j < mipmaps.length; j ++ ) { const mipmap = mipmaps[ j ]; if ( texture.format !== RGBAFormat && texture.format !== RGBFormat ) { if ( glFormat !== null ) { state.compressedTexImage2D( _gl.TEXTURE_CUBE_MAP_POSITIVE_X + i, j, glInternalFormat, mipmap.width, mipmap.height, 0, mipmap.data ); } else { console.warn( 'THREE.WebGLRenderer: Attempt to load unsupported compressed texture format in .setTextureCube()' ); } } else { state.texImage2D( _gl.TEXTURE_CUBE_MAP_POSITIVE_X + i, j, glInternalFormat, mipmap.width, mipmap.height, 0, glFormat, glType, mipmap.data ); } } } textureProperties.__maxMipLevel = mipmaps.length - 1; } else { mipmaps = texture.mipmaps; for ( let i = 0; i < 6; i ++ ) { if ( isDataTexture ) { state.texImage2D( _gl.TEXTURE_CUBE_MAP_POSITIVE_X + i, 0, glInternalFormat, cubeImage[ i ].width, cubeImage[ i ].height, 0, glFormat, glType, cubeImage[ i ].data ); for ( let j = 0; j < mipmaps.length; j ++ ) { const mipmap = mipmaps[ j ]; const mipmapImage = mipmap.image[ i ].image; state.texImage2D( _gl.TEXTURE_CUBE_MAP_POSITIVE_X + i, j + 1, glInternalFormat, mipmapImage.width, mipmapImage.height, 0, glFormat, glType, mipmapImage.data ); } } else { state.texImage2D( _gl.TEXTURE_CUBE_MAP_POSITIVE_X + i, 0, glInternalFormat, glFormat, glType, cubeImage[ i ] ); for ( let j = 0; j < mipmaps.length; j ++ ) { const mipmap = mipmaps[ j ]; state.texImage2D( _gl.TEXTURE_CUBE_MAP_POSITIVE_X + i, j + 1, glInternalFormat, glFormat, glType, mipmap.image[ i ] ); } } } textureProperties.__maxMipLevel = mipmaps.length; } if ( textureNeedsGenerateMipmaps( texture, supportsMips ) ) { // We assume images for cube map have the same size. generateMipmap( _gl.TEXTURE_CUBE_MAP, 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, texture, attachment, textureTarget ) { const glFormat = utils.convert( texture.format ); const glType = utils.convert( texture.type ); const glInternalFormat = getInternalFormat( texture.internalFormat, glFormat, glType ); if ( textureTarget === _gl.TEXTURE_3D || textureTarget === _gl.TEXTURE_2D_ARRAY ) { state.texImage3D( textureTarget, 0, glInternalFormat, renderTarget.width, renderTarget.height, renderTarget.depth, 0, glFormat, glType, null ); } else { state.texImage2D( textureTarget, 0, glInternalFormat, renderTarget.width, renderTarget.height, 0, glFormat, glType, null ); } state.bindFramebuffer( _gl.FRAMEBUFFER, framebuffer ); _gl.framebufferTexture2D( _gl.FRAMEBUFFER, attachment, textureTarget, properties.get( texture ).__webglTexture, 0 ); state.bindFramebuffer( _gl.FRAMEBUFFER, null ); } // Setup storage for internal depth/stencil buffers and bind to correct framebuffer function setupRenderBufferStorage( renderbuffer, renderTarget, isMultisample ) { _gl.bindRenderbuffer( _gl.RENDERBUFFER, renderbuffer ); if ( renderTarget.depthBuffer && ! renderTarget.stencilBuffer ) { let glInternalFormat = _gl.DEPTH_COMPONENT16; if ( isMultisample ) { const depthTexture = renderTarget.depthTexture; if ( depthTexture && depthTexture.isDepthTexture ) { if ( depthTexture.type === FloatType ) { glInternalFormat = _gl.DEPTH_COMPONENT32F; } else if ( depthTexture.type === UnsignedIntType ) { glInternalFormat = _gl.DEPTH_COMPONENT24; } } const samples = getRenderTargetSamples( renderTarget ); _gl.renderbufferStorageMultisample( _gl.RENDERBUFFER, samples, glInternalFormat, renderTarget.width, renderTarget.height ); } else { _gl.renderbufferStorage( _gl.RENDERBUFFER, glInternalFormat, renderTarget.width, renderTarget.height ); } _gl.framebufferRenderbuffer( _gl.FRAMEBUFFER, _gl.DEPTH_ATTACHMENT, _gl.RENDERBUFFER, renderbuffer ); } else if ( renderTarget.depthBuffer && renderTarget.stencilBuffer ) { if ( isMultisample ) { const samples = getRenderTargetSamples( renderTarget ); _gl.renderbufferStorageMultisample( _gl.RENDERBUFFER, samples, _gl.DEPTH24_STENCIL8, renderTarget.width, renderTarget.height ); } else { _gl.renderbufferStorage( _gl.RENDERBUFFER, _gl.DEPTH_STENCIL, renderTarget.width, renderTarget.height ); } _gl.framebufferRenderbuffer( _gl.FRAMEBUFFER, _gl.DEPTH_STENCIL_ATTACHMENT, _gl.RENDERBUFFER, renderbuffer ); } else { // Use the first texture for MRT so far const texture = renderTarget.isWebGLMultipleRenderTargets === true ? renderTarget.texture[ 0 ] : renderTarget.texture; const glFormat = utils.convert( texture.format ); const glType = utils.convert( texture.type ); const glInternalFormat = getInternalFormat( texture.internalFormat, glFormat, glType ); if ( isMultisample ) { const samples = getRenderTargetSamples( renderTarget ); _gl.renderbufferStorageMultisample( _gl.RENDERBUFFER, samples, glInternalFormat, renderTarget.width, renderTarget.height ); } else { _gl.renderbufferStorage( _gl.RENDERBUFFER, glInternalFormat, 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 ) { const isCube = ( renderTarget && renderTarget.isWebGLCubeRenderTarget ); if ( isCube ) throw new Error( 'Depth Texture with cube render targets is not supported' ); state.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 ); const 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 ) { const renderTargetProperties = properties.get( renderTarget ); const isCube = ( renderTarget.isWebGLCubeRenderTarget === 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 ( let i = 0; i < 6; i ++ ) { state.bindFramebuffer( _gl.FRAMEBUFFER, renderTargetProperties.__webglFramebuffer[ i ] ); renderTargetProperties.__webglDepthbuffer[ i ] = _gl.createRenderbuffer(); setupRenderBufferStorage( renderTargetProperties.__webglDepthbuffer[ i ], renderTarget, false ); } } else { state.bindFramebuffer( _gl.FRAMEBUFFER, renderTargetProperties.__webglFramebuffer ); renderTargetProperties.__webglDepthbuffer = _gl.createRenderbuffer(); setupRenderBufferStorage( renderTargetProperties.__webglDepthbuffer, renderTarget, false ); } } state.bindFramebuffer( _gl.FRAMEBUFFER, null ); } // Set up GL resources for the render target function setupRenderTarget( renderTarget ) { const texture = renderTarget.texture; const renderTargetProperties = properties.get( renderTarget ); const textureProperties = properties.get( texture ); renderTarget.addEventListener( 'dispose', onRenderTargetDispose ); if ( renderTarget.isWebGLMultipleRenderTargets !== true ) { textureProperties.__webglTexture = _gl.createTexture(); textureProperties.__version = texture.version; info.memory.textures ++; } const isCube = ( renderTarget.isWebGLCubeRenderTarget === true ); const isMultipleRenderTargets = ( renderTarget.isWebGLMultipleRenderTargets === true ); const isMultisample = ( renderTarget.isWebGLMultisampleRenderTarget === true ); const isRenderTarget3D = texture.isDataTexture3D || texture.isDataTexture2DArray; const supportsMips = isPowerOfTwo( renderTarget ) || isWebGL2; // Handles WebGL2 RGBFormat fallback - #18858 if ( isWebGL2 && texture.format === RGBFormat && ( texture.type === FloatType || texture.type === HalfFloatType ) ) { texture.format = RGBAFormat; console.warn( 'THREE.WebGLRenderer: Rendering to textures with RGB format is not supported. Using RGBA format instead.' ); } // Setup framebuffer if ( isCube ) { renderTargetProperties.__webglFramebuffer = []; for ( let i = 0; i < 6; i ++ ) { renderTargetProperties.__webglFramebuffer[ i ] = _gl.createFramebuffer(); } } else { renderTargetProperties.__webglFramebuffer = _gl.createFramebuffer(); if ( isMultipleRenderTargets ) { if ( capabilities.drawBuffers ) { const textures = renderTarget.texture; for ( let i = 0, il = textures.length; i < il; i ++ ) { const attachmentProperties = properties.get( textures[ i ] ); if ( attachmentProperties.__webglTexture === undefined ) { attachmentProperties.__webglTexture = _gl.createTexture(); info.memory.textures ++; } } } else { console.warn( 'THREE.WebGLRenderer: WebGLMultipleRenderTargets can only be used with WebGL2 or WEBGL_draw_buffers extension.' ); } } else if ( isMultisample ) { if ( isWebGL2 ) { renderTargetProperties.__webglMultisampledFramebuffer = _gl.createFramebuffer(); renderTargetProperties.__webglColorRenderbuffer = _gl.createRenderbuffer(); _gl.bindRenderbuffer( _gl.RENDERBUFFER, renderTargetProperties.__webglColorRenderbuffer ); const glFormat = utils.convert( texture.format ); const glType = utils.convert( texture.type ); const glInternalFormat = getInternalFormat( texture.internalFormat, glFormat, glType ); const samples = getRenderTargetSamples( renderTarget ); _gl.renderbufferStorageMultisample( _gl.RENDERBUFFER, samples, glInternalFormat, renderTarget.width, renderTarget.height ); state.bindFramebuffer( _gl.FRAMEBUFFER, renderTargetProperties.__webglMultisampledFramebuffer ); _gl.framebufferRenderbuffer( _gl.FRAMEBUFFER, _gl.COLOR_ATTACHMENT0, _gl.RENDERBUFFER, renderTargetProperties.__webglColorRenderbuffer ); _gl.bindRenderbuffer( _gl.RENDERBUFFER, null ); if ( renderTarget.depthBuffer ) { renderTargetProperties.__webglDepthRenderbuffer = _gl.createRenderbuffer(); setupRenderBufferStorage( renderTargetProperties.__webglDepthRenderbuffer, renderTarget, true ); } state.bindFramebuffer( _gl.FRAMEBUFFER, null ); } else { console.warn( 'THREE.WebGLRenderer: WebGLMultisampleRenderTarget can only be used with WebGL2.' ); } } } // Setup color buffer if ( isCube ) { state.bindTexture( _gl.TEXTURE_CUBE_MAP, textureProperties.__webglTexture ); setTextureParameters( _gl.TEXTURE_CUBE_MAP, texture, supportsMips ); for ( let i = 0; i < 6; i ++ ) { setupFrameBufferTexture( renderTargetProperties.__webglFramebuffer[ i ], renderTarget, texture, _gl.COLOR_ATTACHMENT0, _gl.TEXTURE_CUBE_MAP_POSITIVE_X + i ); } if ( textureNeedsGenerateMipmaps( texture, supportsMips ) ) { generateMipmap( _gl.TEXTURE_CUBE_MAP, texture, renderTarget.width, renderTarget.height ); } state.bindTexture( _gl.TEXTURE_CUBE_MAP, null ); } else if ( isMultipleRenderTargets ) { const textures = renderTarget.texture; for ( let i = 0, il = textures.length; i < il; i ++ ) { const attachment = textures[ i ]; const attachmentProperties = properties.get( attachment ); state.bindTexture( _gl.TEXTURE_2D, attachmentProperties.__webglTexture ); setTextureParameters( _gl.TEXTURE_2D, attachment, supportsMips ); setupFrameBufferTexture( renderTargetProperties.__webglFramebuffer, renderTarget, attachment, _gl.COLOR_ATTACHMENT0 + i, _gl.TEXTURE_2D ); if ( textureNeedsGenerateMipmaps( attachment, supportsMips ) ) { generateMipmap( _gl.TEXTURE_2D, attachment, renderTarget.width, renderTarget.height ); } } state.bindTexture( _gl.TEXTURE_2D, null ); } else { let glTextureType = _gl.TEXTURE_2D; if ( isRenderTarget3D ) { // Render targets containing layers, i.e: Texture 3D and 2d arrays if ( isWebGL2 ) { const isTexture3D = texture.isDataTexture3D; glTextureType = isTexture3D ? _gl.TEXTURE_3D : _gl.TEXTURE_2D_ARRAY; } else { console.warn( 'THREE.DataTexture3D and THREE.DataTexture2DArray only supported with WebGL2.' ); } } state.bindTexture( glTextureType, textureProperties.__webglTexture ); setTextureParameters( glTextureType, texture, supportsMips ); setupFrameBufferTexture( renderTargetProperties.__webglFramebuffer, renderTarget, texture, _gl.COLOR_ATTACHMENT0, glTextureType ); if ( textureNeedsGenerateMipmaps( texture, supportsMips ) ) { generateMipmap( glTextureType, texture, renderTarget.width, renderTarget.height, renderTarget.depth ); } state.bindTexture( glTextureType, null ); } // Setup depth and stencil buffers if ( renderTarget.depthBuffer ) { setupDepthRenderbuffer( renderTarget ); } } function updateRenderTargetMipmap( renderTarget ) { const supportsMips = isPowerOfTwo( renderTarget ) || isWebGL2; const textures = renderTarget.isWebGLMultipleRenderTargets === true ? renderTarget.texture : [ renderTarget.texture ]; for ( let i = 0, il = textures.length; i < il; i ++ ) { const texture = textures[ i ]; if ( textureNeedsGenerateMipmaps( texture, supportsMips ) ) { const target = renderTarget.isWebGLCubeRenderTarget ? _gl.TEXTURE_CUBE_MAP : _gl.TEXTURE_2D; const webglTexture = properties.get( texture ).__webglTexture; state.bindTexture( target, webglTexture ); generateMipmap( target, texture, renderTarget.width, renderTarget.height ); state.bindTexture( target, null ); } } } function updateMultisampleRenderTarget( renderTarget ) { if ( renderTarget.isWebGLMultisampleRenderTarget ) { if ( isWebGL2 ) { const width = renderTarget.width; const height = renderTarget.height; let mask = _gl.COLOR_BUFFER_BIT; if ( renderTarget.depthBuffer ) mask |= _gl.DEPTH_BUFFER_BIT; if ( renderTarget.stencilBuffer ) mask |= _gl.STENCIL_BUFFER_BIT; const renderTargetProperties = properties.get( renderTarget ); state.bindFramebuffer( _gl.READ_FRAMEBUFFER, renderTargetProperties.__webglMultisampledFramebuffer ); state.bindFramebuffer( _gl.DRAW_FRAMEBUFFER, renderTargetProperties.__webglFramebuffer ); _gl.blitFramebuffer( 0, 0, width, height, 0, 0, width, height, mask, _gl.NEAREST ); state.bindFramebuffer( _gl.READ_FRAMEBUFFER, null ); state.bindFramebuffer( _gl.DRAW_FRAMEBUFFER, renderTargetProperties.__webglMultisampledFramebuffer ); } else { console.warn( 'THREE.WebGLRenderer: WebGLMultisampleRenderTarget can only be used with WebGL2.' ); } } } function getRenderTargetSamples( renderTarget ) { return ( isWebGL2 && renderTarget.isWebGLMultisampleRenderTarget ) ? Math.min( maxSamples, renderTarget.samples ) : 0; } function updateVideoTexture( texture ) { const frame = info.render.frame; // Check the last frame we updated the VideoTexture if ( _videoTextures.get( texture ) !== frame ) { _videoTextures.set( texture, frame ); texture.update(); } } // backwards compatibility let warnedTexture2D = false; let warnedTextureCube = false; function safeSetTexture2D( texture, slot ) { if ( texture && texture.isWebGLRenderTarget ) { if ( warnedTexture2D === false ) { console.warn( 'THREE.WebGLTextures.safeSetTexture2D: don\'t use render targets as textures. Use their .texture property instead.' ); warnedTexture2D = true; } texture = texture.texture; } setTexture2D( texture, slot ); } function safeSetTextureCube( texture, slot ) { if ( texture && texture.isWebGLCubeRenderTarget ) { if ( warnedTextureCube === false ) { console.warn( 'THREE.WebGLTextures.safeSetTextureCube: don\'t use cube render targets as textures. Use their .texture property instead.' ); warnedTextureCube = true; } texture = texture.texture; } setTextureCube( texture, slot ); } // this.allocateTextureUnit = allocateTextureUnit; this.resetTextureUnits = resetTextureUnits; this.setTexture2D = setTexture2D; this.setTexture2DArray = setTexture2DArray; this.setTexture3D = setTexture3D; this.setTextureCube = setTextureCube; this.setupRenderTarget = setupRenderTarget; this.updateRenderTargetMipmap = updateRenderTargetMipmap; this.updateMultisampleRenderTarget = updateMultisampleRenderTarget; this.safeSetTexture2D = safeSetTexture2D; this.safeSetTextureCube = safeSetTextureCube; } export { WebGLTextures };