JSM: Added module and TS file for Lensflare.

docs/manual/en/introduction/Import-via-modules.html

@@ -145,6 +145,7 @@
 				</li>
 				<li>objects
 					<ul>
+						<li>Lensflare</li>
 						<li>Reflector</li>
 						<li>Refractor</li>
 					</ul>

examples/jsm/objects/Lensflare.d.ts

@@ -0,0 +1,21 @@
+import {
+  Mesh,
+  Texture,
+  Color
+} from '../../../src/Three';
+
+export class LensflareElement {
+  constructor(texture: Texture, size?: number, distance?: number, color?: Color );
+  texture: Texture;
+  size: number;
+  distance: number;
+  color: Color;
+}
+
+export class Lensflare extends Mesh {
+  constructor();
+  isLensflare: boolean;
+
+  addElement(element: LensflareElement): void;
+  dispose(): void;
+}

examples/jsm/objects/Lensflare.js

@@ -0,0 +1,400 @@
+/**
+ * @author Mugen87 / https://github.com/Mugen87
+ * @author mrdoob / http://mrdoob.com/
+ */
+
+import {
+	AdditiveBlending,
+	Box2,
+	BufferGeometry,
+	ClampToEdgeWrapping,
+	Color,
+	DataTexture,
+	InterleavedBuffer,
+	InterleavedBufferAttribute,
+	Mesh,
+	MeshBasicMaterial,
+	NearestFilter,
+	RGBFormat,
+	RawShaderMaterial,
+	Vector2,
+	Vector3,
+	Vector4
+} from "../../../build/three.module.js";
+
+var Lensflare = function () {
+
+	Mesh.call( this, Lensflare.Geometry, new MeshBasicMaterial( { opacity: 0, transparent: true } ) );
+
+	this.type = 'Lensflare';
+	this.frustumCulled = false;
+	this.renderOrder = Infinity;
+
+	//
+
+	var positionScreen = new Vector3();
+	var positionView = new Vector3();
+
+	// textures
+
+	var tempMap = new DataTexture( new Uint8Array( 16 * 16 * 3 ), 16, 16, RGBFormat );
+	tempMap.minFilter = NearestFilter;
+	tempMap.magFilter = NearestFilter;
+	tempMap.wrapS = ClampToEdgeWrapping;
+	tempMap.wrapT = ClampToEdgeWrapping;
+	tempMap.needsUpdate = true;
+
+	var occlusionMap = new DataTexture( new Uint8Array( 16 * 16 * 3 ), 16, 16, RGBFormat );
+	occlusionMap.minFilter = NearestFilter;
+	occlusionMap.magFilter = NearestFilter;
+	occlusionMap.wrapS = ClampToEdgeWrapping;
+	occlusionMap.wrapT = ClampToEdgeWrapping;
+	occlusionMap.needsUpdate = true;
+
+	// material
+
+	var geometry = Lensflare.Geometry;
+
+	var material1a = new RawShaderMaterial( {
+		uniforms: {
+			'scale': { value: null },
+			'screenPosition': { value: null }
+		},
+		vertexShader: [
+
+			'precision highp float;',
+
+			'uniform vec3 screenPosition;',
+			'uniform vec2 scale;',
+
+			'attribute vec3 position;',
+
+			'void main() {',
+
+			'	gl_Position = vec4( position.xy * scale + screenPosition.xy, screenPosition.z, 1.0 );',
+
+			'}'
+
+		].join( '\n' ),
+		fragmentShader: [
+
+			'precision highp float;',
+
+			'void main() {',
+
+			'	gl_FragColor = vec4( 1.0, 0.0, 1.0, 1.0 );',
+
+			'}'
+
+		].join( '\n' ),
+		depthTest: true,
+		depthWrite: false,
+		transparent: false
+	} );
+
+	var material1b = new RawShaderMaterial( {
+		uniforms: {
+			'map': { value: tempMap },
+			'scale': { value: null },
+			'screenPosition': { value: null }
+		},
+		vertexShader: [
+
+			'precision highp float;',
+
+			'uniform vec3 screenPosition;',
+			'uniform vec2 scale;',
+
+			'attribute vec3 position;',
+			'attribute vec2 uv;',
+
+			'varying vec2 vUV;',
+
+			'void main() {',
+
+			'	vUV = uv;',
+
+			'	gl_Position = vec4( position.xy * scale + screenPosition.xy, screenPosition.z, 1.0 );',
+
+			'}'
+
+		].join( '\n' ),
+		fragmentShader: [
+
+			'precision highp float;',
+
+			'uniform sampler2D map;',
+
+			'varying vec2 vUV;',
+
+			'void main() {',
+
+			'	gl_FragColor = texture2D( map, vUV );',
+
+			'}'
+
+		].join( '\n' ),
+		depthTest: false,
+		depthWrite: false,
+		transparent: false
+	} );
+
+	// the following object is used for occlusionMap generation
+
+	var mesh1 = new Mesh( geometry, material1a );
+
+	//
+
+	var elements = [];
+
+	var shader = LensflareElement.Shader;
+
+	var material2 = new RawShaderMaterial( {
+		uniforms: {
+			'map': { value: null },
+			'occlusionMap': { value: occlusionMap },
+			'color': { value: new Color( 0xffffff ) },
+			'scale': { value: new Vector2() },
+			'screenPosition': { value: new Vector3() }
+		},
+		vertexShader: shader.vertexShader,
+		fragmentShader: shader.fragmentShader,
+		blending: AdditiveBlending,
+		transparent: true,
+		depthWrite: false
+	} );
+
+	var mesh2 = new Mesh( geometry, material2 );
+
+	this.addElement = function ( element ) {
+
+		elements.push( element );
+
+	};
+
+	//
+
+	var scale = new Vector2();
+	var screenPositionPixels = new Vector2();
+	var validArea = new Box2();
+	var viewport = new Vector4();
+
+	this.onBeforeRender = function ( renderer, scene, camera ) {
+
+		renderer.getCurrentViewport( viewport );
+
+		var invAspect = viewport.w / viewport.z;
+		var halfViewportWidth = viewport.z / 2.0;
+		var halfViewportHeight = viewport.w / 2.0;
+
+		var size = 16 / viewport.w;
+		scale.set( size * invAspect, size );
+
+		validArea.min.set( viewport.x, viewport.y );
+		validArea.max.set( viewport.x + ( viewport.z - 16 ), viewport.y + ( viewport.w - 16 ) );
+
+		// calculate position in screen space
+
+		positionView.setFromMatrixPosition( this.matrixWorld );
+		positionView.applyMatrix4( camera.matrixWorldInverse );
+
+		if ( positionView.z > 0 ) return; // lensflare is behind the camera
+
+		positionScreen.copy( positionView ).applyMatrix4( camera.projectionMatrix );
+
+		// horizontal and vertical coordinate of the lower left corner of the pixels to copy
+
+		screenPositionPixels.x = viewport.x + ( positionScreen.x * halfViewportWidth ) + halfViewportWidth - 8;
+		screenPositionPixels.y = viewport.y + ( positionScreen.y * halfViewportHeight ) + halfViewportHeight - 8;
+
+		// screen cull
+
+		if ( validArea.containsPoint( screenPositionPixels ) ) {
+
+			// save current RGB to temp texture
+
+			renderer.copyFramebufferToTexture( screenPositionPixels, tempMap );
+
+			// render pink quad
+
+			var uniforms = material1a.uniforms;
+			uniforms[ "scale" ].value = scale;
+			uniforms[ "screenPosition" ].value = positionScreen;
+
+			renderer.renderBufferDirect( camera, null, geometry, material1a, mesh1, null );
+
+			// copy result to occlusionMap
+
+			renderer.copyFramebufferToTexture( screenPositionPixels, occlusionMap );
+
+			// restore graphics
+
+			var uniforms = material1b.uniforms;
+			uniforms[ "scale" ].value = scale;
+			uniforms[ "screenPosition" ].value = positionScreen;
+
+			renderer.renderBufferDirect( camera, null, geometry, material1b, mesh1, null );
+
+			// render elements
+
+			var vecX = - positionScreen.x * 2;
+			var vecY = - positionScreen.y * 2;
+
+			for ( var i = 0, l = elements.length; i < l; i ++ ) {
+
+				var element = elements[ i ];
+
+				var uniforms = material2.uniforms;
+
+				uniforms[ "color" ].value.copy( element.color );
+				uniforms[ "map" ].value = element.texture;
+				uniforms[ "screenPosition" ].value.x = positionScreen.x + vecX * element.distance;
+				uniforms[ "screenPosition" ].value.y = positionScreen.y + vecY * element.distance;
+
+				var size = element.size / viewport.w;
+				var invAspect = viewport.w / viewport.z;
+
+				uniforms[ "scale" ].value.set( size * invAspect, size );
+
+				material2.uniformsNeedUpdate = true;
+
+				renderer.renderBufferDirect( camera, null, geometry, material2, mesh2, null );
+
+			}
+
+		}
+
+	};
+
+	this.dispose = function () {
+
+		material1a.dispose();
+		material1b.dispose();
+		material2.dispose();
+
+		tempMap.dispose();
+		occlusionMap.dispose();
+
+		for ( var i = 0, l = elements.length; i < l; i ++ ) {
+
+			elements[ i ].texture.dispose();
+
+		}
+
+	};
+
+};
+
+Lensflare.prototype = Object.create( Mesh.prototype );
+Lensflare.prototype.constructor = Lensflare;
+Lensflare.prototype.isLensflare = true;
+
+//
+
+var LensflareElement = function ( texture, size, distance, color ) {
+
+	this.texture = texture;
+	this.size = size || 1;
+	this.distance = distance || 0;
+	this.color = color || new Color( 0xffffff );
+
+};
+
+LensflareElement.Shader = {
+
+	uniforms: {
+
+		'map': { value: null },
+		'occlusionMap': { value: null },
+		'color': { value: null },
+		'scale': { value: null },
+		'screenPosition': { value: null }
+
+	},
+
+	vertexShader: [
+
+		'precision highp float;',
+
+		'uniform vec3 screenPosition;',
+		'uniform vec2 scale;',
+
+		'uniform sampler2D occlusionMap;',
+
+		'attribute vec3 position;',
+		'attribute vec2 uv;',
+
+		'varying vec2 vUV;',
+		'varying float vVisibility;',
+
+		'void main() {',
+
+		'	vUV = uv;',
+
+		'	vec2 pos = position.xy;',
+
+		'	vec4 visibility = texture2D( occlusionMap, vec2( 0.1, 0.1 ) );',
+		'	visibility += texture2D( occlusionMap, vec2( 0.5, 0.1 ) );',
+		'	visibility += texture2D( occlusionMap, vec2( 0.9, 0.1 ) );',
+		'	visibility += texture2D( occlusionMap, vec2( 0.9, 0.5 ) );',
+		'	visibility += texture2D( occlusionMap, vec2( 0.9, 0.9 ) );',
+		'	visibility += texture2D( occlusionMap, vec2( 0.5, 0.9 ) );',
+		'	visibility += texture2D( occlusionMap, vec2( 0.1, 0.9 ) );',
+		'	visibility += texture2D( occlusionMap, vec2( 0.1, 0.5 ) );',
+		'	visibility += texture2D( occlusionMap, vec2( 0.5, 0.5 ) );',
+
+		'	vVisibility =        visibility.r / 9.0;',
+		'	vVisibility *= 1.0 - visibility.g / 9.0;',
+		'	vVisibility *=       visibility.b / 9.0;',
+
+		'	gl_Position = vec4( ( pos * scale + screenPosition.xy ).xy, screenPosition.z, 1.0 );',
+
+		'}'
+
+	].join( '\n' ),
+
+	fragmentShader: [
+
+		'precision highp float;',
+
+		'uniform sampler2D map;',
+		'uniform vec3 color;',
+
+		'varying vec2 vUV;',
+		'varying float vVisibility;',
+
+		'void main() {',
+
+		'	vec4 texture = texture2D( map, vUV );',
+		'	texture.a *= vVisibility;',
+		'	gl_FragColor = texture;',
+		'	gl_FragColor.rgb *= color;',
+
+		'}'
+
+	].join( '\n' )
+
+};
+
+Lensflare.Geometry = ( function () {
+
+	var geometry = new BufferGeometry();
+
+	var float32Array = new Float32Array( [
+		- 1, - 1, 0, 0, 0,
+		1, - 1, 0, 1, 0,
+		1, 1, 0, 1, 1,
+		- 1, 1, 0, 0, 1
+	] );
+
+	var interleavedBuffer = new InterleavedBuffer( float32Array, 5 );
+
+	geometry.setIndex( [ 0, 1, 2,	0, 2, 3 ] );
+	geometry.addAttribute( 'position', new InterleavedBufferAttribute( interleavedBuffer, 3, 0, false ) );
+	geometry.addAttribute( 'uv', new InterleavedBufferAttribute( interleavedBuffer, 2, 3, false ) );
+
+	return geometry;
+
+} )();
+
+export { Lensflare, LensflareElement };

utils/modularize.js

@@ -60,6 +60,7 @@ var files = [
 	{ path: 'loaders/TGALoader.js', dependencies: [], ignoreList: [] },
 	{ path: 'loaders/VRMLLoader.js', dependencies: [], ignoreList: [] },
 
+	{ path: 'objects/Lensflare.js', dependencies: [], ignoreList: [] },
 	{ path: 'objects/Reflector.js', dependencies: [], ignoreList: [] },
 	{ path: 'objects/Refractor.js', dependencies: [], ignoreList: [] },