<!-- AVATAR-FORGE · part 176 -->
nderTarget = function ( target ) {

			if ( properties.get( target ).__webglFramebuffer === undefined ) {

				textures.setupRenderTarget( target );

			}

		};

		this.initTexture = function ( texture ) {

			if ( texture.isCubeTexture ) {

				textures.setTextureCube( texture, 0 );

			} else if ( texture.isData3DTexture ) {

				textures.setTexture3D( texture, 0 );

			} else if ( texture.isDataArrayTexture || texture.isCompressedArrayTexture ) {

				textures.setTexture2DArray( texture, 0 );

			} else {

				textures.setTexture2D( texture, 0 );

			}

			state.unbindTexture();

		};

		this.resetState = function () {

			_currentActiveCubeFace = 0;
			_currentActiveMipmapLevel = 0;
			_currentRenderTarget = null;

			state.reset();
			bindingStates.reset();

		};

		if ( typeof __THREE_DEVTOOLS__ !== 'undefined' ) {

			__THREE_DEVTOOLS__.dispatchEvent( new CustomEvent( 'observe', { detail: this } ) );

		}

	}

	get coordinateSystem() {

		return WebGLCoordinateSystem;

	}

	get outputColorSpace() {

		return this._outputColorSpace;

	}

	set outputColorSpace( colorSpace ) {

		this._outputColorSpace = colorSpace;

		const gl = this.getContext();
		gl.drawingBufferColorSpace = colorSpace === DisplayP3ColorSpace ? 'display-p3' : 'srgb';
		gl.unpackColorSpace = ColorManagement.workingColorSpace === LinearDisplayP3ColorSpace ? 'display-p3' : 'srgb';

	}

}

class FogExp2 {

	constructor( color, density = 0.00025 ) {

		this.isFogExp2 = true;

		this.name = '';

		this.color = new Color( color );
		this.density = density;

	}

	clone() {

		return new FogExp2( this.color, this.density );

	}

	toJSON( /* meta */ ) {

		return {
			type: 'FogExp2',
			name: this.name,
			color: this.color.getHex(),
			density: this.density
		};

	}

}

class Fog {

	constructor( color, near = 1, far = 1000 ) {

		this.isFog = true;

		this.name = '';

		this.color = new Color( color );

		this.near = near;
		this.far = far;

	}

	clone() {

		return new Fog( this.color, this.near, this.far );

	}

	toJSON( /* meta */ ) {

		return {
			type: 'Fog',
			name: this.name,
			color: this.color.getHex(),
			near: this.near,
			far: this.far
		};

	}

}

class Scene extends Object3D {

	constructor() {

		super();

		this.isScene = true;

		this.type = 'Scene';

		this.background = null;
		this.environment = null;
		this.fog = null;

		this.backgroundBlurriness = 0;
		this.backgroundIntensity = 1;
		this.backgroundRotation = new Euler();

		this.environmentIntensity = 1;
		this.environmentRotation = new Euler();

		this.overrideMaterial = null;

		if ( typeof __THREE_DEVTOOLS__ !== 'undefined' ) {

			__THREE_DEVTOOLS__.dispatchEvent( new CustomEvent( 'observe', { detail: this } ) );

		}

	}

	copy( source, recursive ) {

		super.copy( source, recursive );

		if ( source.background !== null ) this.background = source.background.clone();
		if ( source.environment !== null ) this.environment = source.environment.clone();
		if ( source.fog !== null ) this.fog = source.fog.clone();

		this.backgroundBlurriness = source.backgroundBlurriness;
		this.backgroundIntensity = source.backgroundIntensity;
		this.backgroundRotation.copy( source.backgroundRotation );

		this.environmentIntensity = source.environmentIntensity;
		this.environmentRotation.copy( source.environmentRotation );

		if ( source.overrideMaterial !== null ) this.overrideMaterial = source.overrideMaterial.clone();

		this.matrixAutoUpdate = source.matrixAutoUpdate;

		return this;

	}

	toJSON( meta ) {

		const data = super.toJSON( meta );

		if ( this.fog !== null ) data.object.fog = this.fog.toJSON();

		if ( this.backgroundBlurriness > 0 ) data.object.backgroundBlurriness = this.backgroundBlurriness;
		if ( this.backgroundIntensity !== 1 ) data.object.backgroundIntensity = this.backgroundIntensity;
		data.object.backgroundRotation = this.backgroundRotation.toArray();

		if ( this.environmentIntensity !== 1 ) data.object.environmentIntensity = this.environmentIntensity;
		data.object.environmentRotation = this.environmentRotation.toArray();

		return data;

	}

}

class InterleavedBuffer {

	constructor( array, stride ) {

		this.isInterleavedBuffer = true;

		this.array = array;
		this.stride = stride;
		this.count = array !== undefined ? array.length / stride : 0;

		this.usage = StaticDrawUsage;
		this._updateRange = { offset: 0, count: - 1 };
		this.updateRanges = [];

		this.version = 0;

		this.uuid = generateUUID();

	}

	onUploadCallback() {}

	set needsUpdate( value ) {

		if ( value === true ) this.version ++;

	}

	get updateRange() {

		warnOnce( 'THREE.InterleavedBuffer: updateRange() is deprecated and will be removed in r169. Use addUpdateRange() instead.' ); // @deprecated, r159
		return this._updateRange;

	}

	setUsage( value ) {

		this.usage = value;

		return this;

	}

	addUpdateRange( start, count ) {

		this.updateRanges.push( { start, count } );

	}

	clearUpdateRanges() {

		this.updateRanges.length = 0;

	}