text: ( function () {
  
  	// http://en.wikipedia.org/wiki/RGBE_image_format
  
  	class RGBELoader extends THREE.DataTextureLoader {
  
  		constructor( manager ) {
  
  			super( manager );
  			this.type = THREE.UnsignedByteType;
  
  		} // adapted from http://www.graphics.cornell.edu/~bjw/rgbe.html
  
  
  		parse( buffer ) {
  
  			const
  				/* return codes for rgbe routines */
  				//RGBE_RETURN_SUCCESS = 0,
  				RGBE_RETURN_FAILURE = - 1,
  
  				/* default error routine.	change this to change error handling */
  				rgbe_read_error = 1,
  				rgbe_write_error = 2,
  				rgbe_format_error = 3,
  				rgbe_memory_error = 4,
  				rgbe_error = function ( rgbe_error_code, msg ) {
  
  					switch ( rgbe_error_code ) {
  
  						case rgbe_read_error:
  							console.error( 'THREE.RGBELoader Read Error: ' + ( msg || '' ) );
  							break;
  
  						case rgbe_write_error:
  							console.error( 'THREE.RGBELoader Write Error: ' + ( msg || '' ) );
  							break;
  
  						case rgbe_format_error:
  							console.error( 'THREE.RGBELoader Bad File Format: ' + ( msg || '' ) );
  							break;
  
  						default:
  						case rgbe_memory_error:
  							console.error( 'THREE.RGBELoader: Error: ' + ( msg || '' ) );
  
  					}
  
  					return RGBE_RETURN_FAILURE;
  
  				},
  
  				/* offsets to red, green, and blue components in a data (float) pixel */
  				//RGBE_DATA_RED = 0,
  				//RGBE_DATA_GREEN = 1,
  				//RGBE_DATA_BLUE = 2,
  
  				/* number of floats per pixel, use 4 since stored in rgba image format */
  				//RGBE_DATA_SIZE = 4,
  
  				/* flags indicating which fields in an rgbe_header_info are valid */
  				RGBE_VALID_PROGRAMTYPE = 1,
  				RGBE_VALID_FORMAT = 2,
  				RGBE_VALID_DIMENSIONS = 4,
  				NEWLINE = '\n',
  				fgets = function ( buffer, lineLimit, consume ) {
  
  					const chunkSize = 128;
  					lineLimit = ! lineLimit ? 1024 : lineLimit;
  					let p = buffer.pos,
  						i = - 1,
  						len = 0,
  						s = '',
  						chunk = String.fromCharCode.apply( null, new Uint16Array( buffer.subarray( p, p + chunkSize ) ) );
  
  					while ( 0 > ( i = chunk.indexOf( NEWLINE ) ) && len < lineLimit && p < buffer.byteLength ) {
  
  						s += chunk;
  						len += chunk.length;
  						p += chunkSize;
  						chunk += String.fromCharCode.apply( null, new Uint16Array( buffer.subarray( p, p + chunkSize ) ) );
  
  					}
  
  					if ( - 1 < i ) {
  
  						/*for (i=l-1; i>=0; i--) {
  					byteCode = m.charCodeAt(i);
  					if (byteCode > 0x7f && byteCode <= 0x7ff) byteLen++;
  					else if (byteCode > 0x7ff && byteCode <= 0xffff) byteLen += 2;
  					if (byteCode >= 0xDC00 && byteCode <= 0xDFFF) i--; //trail surrogate
  				}*/
  						if ( false !== consume ) buffer.pos += len + i + 1;
  						return s + chunk.slice( 0, i );
  
  					}
  
  					return false;
  
  				},
  
  				/* minimal header reading.	modify if you want to parse more information */
  				RGBE_ReadHeader = function ( buffer ) {
  
  					// regexes to parse header info fields
  					const magic_token_re = /^#\?(\S+)/,
  						gamma_re = /^\s*GAMMA\s*=\s*(\d+(\.\d+)?)\s*$/,
  						exposure_re = /^\s*EXPOSURE\s*=\s*(\d+(\.\d+)?)\s*$/,
  						format_re = /^\s*FORMAT=(\S+)\s*$/,
  						dimensions_re = /^\s*\-Y\s+(\d+)\s+\+X\s+(\d+)\s*$/,
  						// RGBE format header struct
  						header = {
  							valid: 0,
  
  							/* indicate which fields are valid */
  							string: '',
  
  							/* the actual header string */
  							comments: '',
  
  							/* comments found in header */
  							programtype: 'RGBE',
  
  							/* listed at beginning of file to identify it after "#?". defaults to "RGBE" */
  							format: '',
  
  							/* RGBE format, default 32-bit_rle_rgbe */
  							gamma: 1.0,
  
  							/* image has already been gamma corrected with given gamma. defaults to 1.0 (no correction) */
  							exposure: 1.0,
  
  							/* a value of 1.0 in an image corresponds to <exposure> watts/steradian/m^2. defaults to 1.0 */
  							width: 0,
  							height: 0
  							/* image dimensions, width/height */
  
  						};
  					let line, match;
  
  					if ( buffer.pos >= buffer.byteLength || ! ( line = fgets( buffer ) ) ) {
  
  						return rgbe_error( rgbe_read_error, 'no header found' );
  
  					}
  					/* if you want to require the magic token then uncomment the next line */
  
  
  					if ( ! ( match = line.match( magic_token_re ) ) ) {
  
  						return rgbe_error( rgbe_format_error, 'bad initial token' );
  
  					}
  
  					header.valid |= RGBE_VALID_PROGRAMTYPE;
  					header.programtype = match[ 1 ];
  					header.string += line + '\n';
  
  					while ( true ) {
  
  						line = fgets( buffer );
  						if ( false === line ) break;
  						header.string += line + '\n';
  
  						if ( '#' === line.charAt( 0 ) ) {
  
  							header.comments += line + '\n';
  							continue; // comment line
  
  						}
  
  						if ( match = line.match( gamma_re ) ) {
  
  							header.gamma = parseFloat( match[ 1 ], 10 );
  
  						}
  
  						if ( match = line.match( exposure_re ) ) {
  
  							header.exposure = parseFloat( match[ 1 ], 10 );
  
  						}
  
  						if ( match = line.match( format_re ) ) {
  
  							header.valid |= RGBE_VALID_FORMAT;
  							header.format = match[ 1 ]; //'32-bit_rle_rgbe';
  
  						}
  
  						if ( match = line.match( dimensions_re ) ) {
  
  							header.valid |= RGBE_VALID_DIMENSIONS;
  							header.height = parseInt( match[ 1 ], 10 );
  							header.width = parseInt( match[ 2 ], 10 );
  
  						}
  
  						if ( header.valid & RGBE_VALID_FORMAT && header.valid & RGBE_VALID_DIMENSIONS ) break;
  
  					}
  
  					if ( ! ( header.valid & RGBE_VALID_FORMAT ) ) {
  
  						return rgbe_error( rgbe_format_error, 'missing format specifier' );
  
  					}
  
  					if ( ! ( header.valid & RGBE_VALID_DIMENSIONS ) ) {
  
  						return rgbe_error( rgbe_format_error, 'missing image size specifier' );
  
  					}
  
  					return header;
  
  				},
  				RGBE_ReadPixels_RLE = function ( buffer, w, h ) {
  
  					const scanline_width = w;
  
  					if ( // run length encoding is not allowed so read flat
  						scanline_width < 8 || scanline_width > 0x7fff || // this file is not run length encoded
  			2 !== buffer[ 0 ] || 2 !== buffer[ 1 ] || buffer[ 2 ] & 0x80 ) {
  
  						// return the flat buffer
  						return new Uint8Array( buffer );
  
  					}
  
  					if ( scanline_width !== ( buffer[ 2 ] << 8 | buffer[ 3 ] ) ) {
  
  						return rgbe_error( rgbe_format_error, 'wrong scanline width' );
  
  					}
  
  					const data_rgba = new Uint8Array( 4 * w * h );
  
  					if ( ! data_rgba.length ) {
  
  						return rgbe_error( rgbe_memory_error, 'unable to allocate buffer space' );
  
  					}
  
  					let offset = 0,
  						pos = 0;
  					const ptr_end = 4 * scanline_width;
  					const rgbeStart = new Uint8Array( 4 );
  					const scanline_buffer = new Uint8Array( ptr_end );
  					let num_scanlines = h; // read in each successive scanline
  
  					while ( num_scanlines > 0 && pos < buffer.byteLength ) {
  
  						if ( pos + 4 > buffer.byteLength ) {
  
  							return rgbe_error( rgbe_read_error );
  
  						}
  
  						rgbeStart[ 0 ] = buffer[ pos ++ ];
  						rgbeStart[ 1 ] = buffer[ pos ++ ];
  						rgbeStart[ 2 ] = buffer[ pos ++ ];
  						rgbeStart[ 3 ] = buffer[ pos ++ ];
  
  						if ( 2 != rgbeStart[ 0 ] || 2 != rgbeStart[ 1 ] || ( rgbeStart[ 2 ] << 8 | rgbeStart[ 3 ] ) != scanline_width ) {
  
  							return rgbe_error( rgbe_format_error, 'bad rgbe scanline format' );
  
  						} // read each of the four channels for the scanline into the buffer
  						// first red, then green, then blue, then exponent
  
  
  						let ptr = 0,
  							count;
  
  						while ( ptr < ptr_end && pos < buffer.byteLength ) {
  
  							count = buffer[ pos ++ ];
  							const isEncodedRun = count > 128;
  							if ( isEncodedRun ) count -= 128;
  
  							if ( 0 === count || ptr + count > ptr_end ) {
  
  								return rgbe_error( rgbe_format_error, 'bad scanline data' );
  
  							}
  
  							if ( isEncodedRun ) {
  
  								// a (encoded) run of the same value
  								const byteValue = buffer[ pos ++ ];
  
  								for ( let i = 0; i < count; i ++ ) {
  
  									scanline_buffer[ ptr ++ ] = byteValue;
  
  								} //ptr += count;
  
  							} else {
  
  								// a literal-run
  								scanline_buffer.set( buffer.subarray( pos, pos + count ), ptr );
  								ptr += count;
  								pos += count;
  
  							}
  
  						} // now convert data from buffer into rgba
  						// first red, then green, then blue, then exponent (alpha)
  
  
  						const l = scanline_width; //scanline_buffer.byteLength;
  
  						for ( let i = 0; i < l; i ++ ) {
  
  							let off = 0;
  							data_rgba[ offset ] = scanline_buffer[ i + off ];
  							off += scanline_width; //1;
  
  							data_rgba[ offset + 1 ] = scanline_buffer[ i + off ];
  							off += scanline_width; //1;
  
  							data_rgba[ offset + 2 ] = scanline_buffer[ i + off ];
  							off += scanline_width; //1;
  
  							data_rgba[ offset + 3 ] = scanline_buffer[ i + off ];
  							offset += 4;
  
  						}
  
  						num_scanlines --;
  
  					}
  
  					return data_rgba;
  
  				};
  
  			const RGBEByteToRGBFloat = function ( sourceArray, sourceOffset, destArray, destOffset ) {
  
  				const e = sourceArray[ sourceOffset + 3 ];
  				const scale = Math.pow( 2.0, e - 128.0 ) / 255.0;
  				destArray[ destOffset + 0 ] = sourceArray[ sourceOffset + 0 ] * scale;
  				destArray[ destOffset + 1 ] = sourceArray[ sourceOffset + 1 ] * scale;
  				destArray[ destOffset + 2 ] = sourceArray[ sourceOffset + 2 ] * scale;
  
  			};
  
  			const RGBEByteToRGBHalf = function ( sourceArray, sourceOffset, destArray, destOffset ) {
  
  				const e = sourceArray[ sourceOffset + 3 ];
  				const scale = Math.pow( 2.0, e - 128.0 ) / 255.0;
  				destArray[ destOffset + 0 ] = THREE.DataUtils.toHalfFloat( sourceArray[ sourceOffset + 0 ] * scale );
  				destArray[ destOffset + 1 ] = THREE.DataUtils.toHalfFloat( sourceArray[ sourceOffset + 1 ] * scale );
  				destArray[ destOffset + 2 ] = THREE.DataUtils.toHalfFloat( sourceArray[ sourceOffset + 2 ] * scale );
  
  			};
  
  			const byteArray = new Uint8Array( buffer );
  			byteArray.pos = 0;
  			const rgbe_header_info = RGBE_ReadHeader( byteArray );
  
  			if ( RGBE_RETURN_FAILURE !== rgbe_header_info ) {
  
  				const w = rgbe_header_info.width,
  					h = rgbe_header_info.height,
  					image_rgba_data = RGBE_ReadPixels_RLE( byteArray.subarray( byteArray.pos ), w, h );
  
  				if ( RGBE_RETURN_FAILURE !== image_rgba_data ) {
  
  					let data, format, type;
  					let numElements;
  
  					switch ( this.type ) {
  
  						case THREE.UnsignedByteType:
  							data = image_rgba_data;
  							format = THREE.RGBEFormat; // handled as THREE.RGBAFormat in shaders
  
  							type = THREE.UnsignedByteType;
  							break;
  
  						case THREE.FloatType:
  							numElements = image_rgba_data.length / 4 * 3;
  							const floatArray = new Float32Array( numElements );
  
  							for ( let j = 0; j < numElements; j ++ ) {
  
  								RGBEByteToRGBFloat( image_rgba_data, j * 4, floatArray, j * 3 );
  
  							}
  
  							data = floatArray;
  							format = THREE.RGBFormat;
  							type = THREE.FloatType;
  							break;
  
  						case THREE.HalfFloatType:
  							numElements = image_rgba_data.length / 4 * 3;
  							const halfArray = new Uint16Array( numElements );
  
  							for ( let j = 0; j < numElements; j ++ ) {
  
  								RGBEByteToRGBHalf( image_rgba_data, j * 4, halfArray, j * 3 );
  
  							}
  
  							data = halfArray;
  							format = THREE.RGBFormat;
  							type = THREE.HalfFloatType;
  							break;
  
  						default:
  							console.error( 'THREE.RGBELoader: unsupported type: ', this.type );
  							break;
  
  					}
  
  					return {
  						width: w,
  						height: h,
  						data: data,
  						header: rgbe_header_info.string,
  						gamma: rgbe_header_info.gamma,
  						exposure: rgbe_header_info.exposure,
  						format: format,
  						type: type
  					};
  
  				}
  
  			}
  
  			return null;
  
  		}
  
  		setDataType( value ) {
  
  			this.type = value;
  			return this;
  
  		}
  
  		load( url, onLoad, onProgress, onError ) {
  
  			function onLoadCallback( texture, texData ) {
  
  				switch ( texture.type ) {
  
  					case THREE.UnsignedByteType:
  						texture.encoding = THREE.RGBEEncoding;
  						texture.minFilter = THREE.NearestFilter;
  						texture.magFilter = THREE.NearestFilter;
  						texture.generateMipmaps = false;
  						texture.flipY = true;
  						break;
  
  					case THREE.FloatType:
  						texture.encoding = THREE.LinearEncoding;
  						texture.minFilter = THREE.LinearFilter;
  						texture.magFilter = THREE.LinearFilter;
  						texture.generateMipmaps = false;
  						texture.flipY = true;
  						break;
  
  					case THREE.HalfFloatType:
  						texture.encoding = THREE.LinearEncoding;
  						texture.minFilter = THREE.LinearFilter;
  						texture.magFilter = THREE.LinearFilter;
  						texture.generateMipmaps = false;
  						texture.flipY = true;
  						break;
  
  				}
  
  				if ( onLoad ) onLoad( texture, texData );
  
  			}
  
  			return super.load( url, onLoadCallback, onProgress, onError );
  
  		}
  
  	}
  
  	THREE.RGBELoader = RGBELoader;
  
  } )();