<!-- SOLIDIVISM · part 440 -->
wport.y,
						_viewportSize.x * viewport.z,
						_viewportSize.y * viewport.w
					);

					_state.viewport( _viewport );

				}

				_frustum = shadow.getFrustum( face );

				renderObject( scene, camera, shadowCamera, light, this.type );

			}

			// do blur pass for VSM

			if ( shadow.isPointLightShadow !== true && this.type === VSMShadowMap ) {

				VSMPass( shadow, camera );

			}

			shadow.needsUpdate = false;

		}

		_previousType = this.type;

		scope.needsUpdate = false;

		renderer.setRenderTarget( currentRenderTarget, activeCubeFace, activeMipmapLevel );

	};

	function VSMPass( shadow, camera ) {

		const geometry = objects.update( fullScreenMesh );

		if ( shadowMaterialVertical.defines.VSM_SAMPLES !== shadow.blurSamples ) {

			shadowMaterialVertical.defines.VSM_SAMPLES = shadow.blurSamples;
			shadowMaterialHorizontal.defines.VSM_SAMPLES = shadow.blurSamples;

			shadowMaterialVertical.needsUpdate = true;
			shadowMaterialHorizontal.needsUpdate = true;

		}

		if ( shadow.mapPass === null ) {

			shadow.mapPass = new WebGLRenderTarget( _shadowMapSize.x, _shadowMapSize.y, {
				format: RGFormat,
				type: HalfFloatType
			} );

		} else if ( shadow.mapPass.width !== shadow.map.width || shadow.mapPass.height !== shadow.map.height ) {

			shadow.mapPass.setSize( shadow.map.width, shadow.map.height );

		}

		// vertical pass - read from native depth texture

		shadowMaterialVertical.uniforms.shadow_pass.value = shadow.map.depthTexture;
		shadowMaterialVertical.uniforms.resolution.value.set( shadow.map.width, shadow.map.height );
		shadowMaterialVertical.uniforms.radius.value = shadow.radius;
		renderer.setRenderTarget( shadow.mapPass );
		renderer.clear();
		renderer.renderBufferDirect( camera, null, geometry, shadowMaterialVertical, fullScreenMesh, null );

		// horizontal pass

		shadowMaterialHorizontal.uniforms.shadow_pass.value = shadow.mapPass.texture;
		shadowMaterialHorizontal.uniforms.resolution.value.set( shadow.map.width, shadow.map.height );
		shadowMaterialHorizontal.uniforms.radius.value = shadow.radius;
		renderer.setRenderTarget( shadow.map );
		renderer.clear();
		renderer.renderBufferDirect( camera, null, geometry, shadowMaterialHorizontal, fullScreenMesh, null );

	}

	function getDepthMaterial( object, material, light, type ) {

		let result = null;

		const customMaterial = ( light.isPointLight === true ) ? object.customDistanceMaterial : object.customDepthMaterial;

		if ( customMaterial !== undefined ) {

			result = customMaterial;

		} else {

			result = ( light.isPointLight === true ) ? _distanceMaterial : _depthMaterial;

			if ( ( renderer.localClippingEnabled && material.clipShadows === true && Array.isArray( material.clippingPlanes ) && material.clippingPlanes.length !== 0 ) ||
				( material.displacementMap && material.displacementScale !== 0 ) ||
				( material.alphaMap && material.alphaTest > 0 ) ||
				( material.map && material.alphaTest > 0 ) ||
				( material.alphaToCoverage === true ) ) {

				// in this case we need a unique material instance reflecting the
				// appropriate state

				const keyA = result.uuid, keyB = material.uuid;

				let materialsForVariant = _materialCache[ keyA ];

				if ( materialsForVariant === undefined ) {

					materialsForVariant = {};
					_materialCache[ keyA ] = materialsForVariant;

				}

				let cachedMaterial = materialsForVariant[ keyB ];

				if ( cachedMaterial === undefined ) {

					cachedMaterial = result.clone();
					materialsForVariant[ keyB ] = cachedMaterial;
					material.addEventListener( 'dispose', onMaterialDispose );

				}

				result = cachedMaterial;

			}

		}

		result.visible = material.visible;
		result.wireframe = material.wireframe;

		if ( type === VSMShadowMap ) {

			result.side = ( material.shadowSide !== null ) ? material.shadowSide : material.side;

		} else {

			result.side = ( material.shadowSide !== null ) ? material.shadowSide : shadowSide[ material.side ];

		}

		result.alphaMap = material.alphaMap;
		result.alphaTest = ( material.alphaToCoverage === true ) ? 0.5 : material.alphaTest; // approximate alphaToCoverage by using a fixed alphaTest value
		result.map = material.map;

		result.clipShadows = material.clipShadows;
		result.clippingPlanes = material.clippingPlanes;
		result.clipIntersection = material.clipIntersection;

		result.displacementMap = material.displacementMap;
		result.displacementScale = material.displacementScale;
		result.displacementBias = material.displacementBias;

		result.wireframeLinewidth = material.wireframeLinewidth;
		result.linewidth = material.linewidth;

		if ( light.isPointLight === true && result.isMeshDistanceMaterial === true ) {

			const materialProperties = renderer.properties.get( result );
			materialProperties.light = light;

		}

		return result;

	}

	function renderObject( object, camera, shadowCamera, light, type ) {

		if ( object.visible === false ) return;

		const visible = object.layers.test(