il = mipmaps.length; i < il; i ++ ) { mipmap = mipmaps[ i ]; if ( texture.format !== RGBAFormat ) { if ( glFormat !== null ) { if ( useTexStorage ) { if ( dataReady ) { if ( texture.layerUpdates.size > 0 ) { for ( const layerIndex of texture.layerUpdates ) { const layerSize = mipmap.width * mipmap.height; state.compressedTexSubImage3D( _gl.TEXTURE_2D_ARRAY, i, 0, 0, layerIndex, mipmap.width, mipmap.height, 1, glFormat, mipmap.data.slice( layerSize * layerIndex, layerSize * ( layerIndex + 1 ) ), 0, 0 ); } texture.clearLayerUpdates(); } else { state.compressedTexSubImage3D( _gl.TEXTURE_2D_ARRAY, i, 0, 0, 0, mipmap.width, mipmap.height, image.depth, glFormat, mipmap.data, 0, 0 ); } } } else { state.compressedTexImage3D( _gl.TEXTURE_2D_ARRAY, i, glInternalFormat, mipmap.width, mipmap.height, image.depth, 0, mipmap.data, 0, 0 ); } } else { console.warn( 'THREE.WebGLRenderer: Attempt to load unsupported compressed texture format in .uploadTexture()' ); } } else { if ( useTexStorage ) { if ( dataReady ) { state.texSubImage3D( _gl.TEXTURE_2D_ARRAY, i, 0, 0, 0, mipmap.width, mipmap.height, image.depth, glFormat, glType, mipmap.data ); } } else { state.texImage3D( _gl.TEXTURE_2D_ARRAY, i, glInternalFormat, mipmap.width, mipmap.height, image.depth, 0, glFormat, glType, mipmap.data ); } } } } else { if ( useTexStorage && allocateMemory ) { state.texStorage2D( _gl.TEXTURE_2D, levels, glInternalFormat, mipmaps[ 0 ].width, mipmaps[ 0 ].height ); } for ( let i = 0, il = mipmaps.length; i < il; i ++ ) { mipmap = mipmaps[ i ]; if ( texture.format !== RGBAFormat ) { if ( glFormat !== null ) { if ( useTexStorage ) { if ( dataReady ) { state.compressedTexSubImage2D( _gl.TEXTURE_2D, i, 0, 0, mipmap.width, mipmap.height, glFormat, mipmap.data ); } } else { 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 { if ( useTexStorage ) { if ( dataReady ) { state.texSubImage2D( _gl.TEXTURE_2D, i, 0, 0, mipmap.width, mipmap.height, glFormat, glType, mipmap.data ); } } else { state.texImage2D( _gl.TEXTURE_2D, i, glInternalFormat, mipmap.width, mipmap.height, 0, glFormat, glType, mipmap.data ); } } } } } else if ( texture.isDataArrayTexture ) { if ( useTexStorage ) { if ( allocateMemory ) { state.texStorage3D( _gl.TEXTURE_2D_ARRAY, levels, glInternalFormat, image.width, image.height, image.depth ); } if ( dataReady ) { if ( texture.layerUpdates.size > 0 ) { // When type is GL_UNSIGNED_BYTE, each of these bytes is // interpreted as one color component, depending on format. When // type is one of GL_UNSIGNED_SHORT_5_6_5, // GL_UNSIGNED_SHORT_4_4_4_4, GL_UNSIGNED_SHORT_5_5_5_1, each // unsigned value is interpreted as containing all the components // for a single pixel, with the color components arranged // according to format. // // See https://registry.khronos.org/OpenGL-Refpages/es1.1/xhtml/glTexImage2D.xml let texelSize; switch ( glType ) { case _gl.UNSIGNED_BYTE: switch ( glFormat ) { case _gl.ALPHA: texelSize = 1; break; case _gl.LUMINANCE: texelSize = 1; break; case _gl.LUMINANCE_ALPHA: texelSize = 2; break; case _gl.RGB: texelSize = 3; break; case _gl.RGBA: texelSize = 4; break; default: throw new Error( `Unknown texel size for format ${glFormat}.` ); } break; case _gl.UNSIGNED_SHORT_4_4_4_4: case _gl.UNSIGNED_SHORT_5_5_5_1: case _gl.UNSIGNED_SHORT_5_6_5: texelSize = 1; break; default: throw new Error( `Unknown texel size for type ${glType}.` ); } const layerSize = image.width * image.height * texelSize; for ( const layerIndex of texture.layerUpdates ) { state.texSubImage3D( _gl.TEXTURE_2D_ARRAY, 0, 0, 0, layerIndex, image.width, image.height, 1, glFormat, glType, image.data.slice( layerSize * layerIndex, layerSize * ( layerIndex + 1 ) ) ); } texture.clearLayerUpdates(); } else { state.texSubImage3D( _gl.TEXTURE_2D_ARRAY, 0, 0, 0, 0, image.wi