auto: 2026-07-09_06:00 changes

1 files changed, 366 insertions, 0 deletions

diff --git a/downloads/UnrealBloomPass.js b/downloads/UnrealBloomPass.js
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+( function () {
+
+	/**
+ * UnrealBloomPass is inspired by the bloom pass of Unreal Engine. It creates a
+ * mip map chain of bloom textures and blurs them with different radii. Because
+ * of the weighted combination of mips, and because larger blurs are done on
+ * higher mips, this effect provides good quality and performance.
+ *
+ * Reference:
+ * - https://docs.unrealengine.com/latest/INT/Engine/Rendering/PostProcessEffects/Bloom/
+ */
+
+	class UnrealBloomPass extends THREE.Pass {
+
+		constructor( resolution, strength, radius, threshold ) {
+
+			super();
+			this.strength = strength !== undefined ? strength : 1;
+			this.radius = radius;
+			this.threshold = threshold;
+			this.resolution = resolution !== undefined ? new THREE.Vector2( resolution.x, resolution.y ) : new THREE.Vector2( 256, 256 ); // create color only once here, reuse it later inside the render function
+
+			this.clearColor = new THREE.Color( 0, 0, 0 ); // render targets
+
+			const pars = {
+				minFilter: THREE.LinearFilter,
+				magFilter: THREE.LinearFilter,
+				format: THREE.RGBAFormat
+			};
+			this.renderTargetsHorizontal = [];
+			this.renderTargetsVertical = [];
+			this.nMips = 5;
+			let resx = Math.round( this.resolution.x / 2 );
+			let resy = Math.round( this.resolution.y / 2 );
+			this.renderTargetBright = new THREE.WebGLRenderTarget( resx, resy, pars );
+			this.renderTargetBright.texture.name = 'UnrealBloomPass.bright';
+			this.renderTargetBright.texture.generateMipmaps = false;
+
+			for ( let i = 0; i < this.nMips; i ++ ) {
+
+				const renderTargetHorizonal = new THREE.WebGLRenderTarget( resx, resy, pars );
+				renderTargetHorizonal.texture.name = 'UnrealBloomPass.h' + i;
+				renderTargetHorizonal.texture.generateMipmaps = false;
+				this.renderTargetsHorizontal.push( renderTargetHorizonal );
+				const renderTargetVertical = new THREE.WebGLRenderTarget( resx, resy, pars );
+				renderTargetVertical.texture.name = 'UnrealBloomPass.v' + i;
+				renderTargetVertical.texture.generateMipmaps = false;
+				this.renderTargetsVertical.push( renderTargetVertical );
+				resx = Math.round( resx / 2 );
+				resy = Math.round( resy / 2 );
+
+			} // luminosity high pass material
+
+
+			if ( THREE.LuminosityHighPassShader === undefined ) console.error( 'THREE.UnrealBloomPass relies on THREE.LuminosityHighPassShader' );
+			const highPassShader = THREE.LuminosityHighPassShader;
+			this.highPassUniforms = THREE.UniformsUtils.clone( highPassShader.uniforms );
+			this.highPassUniforms[ 'luminosityThreshold' ].value = threshold;
+			this.highPassUniforms[ 'smoothWidth' ].value = 0.01;
+			this.materialHighPassFilter = new THREE.ShaderMaterial( {
+				uniforms: this.highPassUniforms,
+				vertexShader: highPassShader.vertexShader,
+				fragmentShader: highPassShader.fragmentShader,
+				defines: {}
+			} ); // Gaussian Blur Materials
+
+			this.separableBlurMaterials = [];
+			const kernelSizeArray = [ 3, 5, 7, 9, 11 ];
+			resx = Math.round( this.resolution.x / 2 );
+			resy = Math.round( this.resolution.y / 2 );
+
+			for ( let i = 0; i < this.nMips; i ++ ) {
+
+				this.separableBlurMaterials.push( this.getSeperableBlurMaterial( kernelSizeArray[ i ] ) );
+				this.separableBlurMaterials[ i ].uniforms[ 'texSize' ].value = new THREE.Vector2( resx, resy );
+				resx = Math.round( resx / 2 );
+				resy = Math.round( resy / 2 );
+
+			} // Composite material
+
+
+			this.compositeMaterial = this.getCompositeMaterial( this.nMips );
+			this.compositeMaterial.uniforms[ 'blurTexture1' ].value = this.renderTargetsVertical[ 0 ].texture;
+			this.compositeMaterial.uniforms[ 'blurTexture2' ].value = this.renderTargetsVertical[ 1 ].texture;
+			this.compositeMaterial.uniforms[ 'blurTexture3' ].value = this.renderTargetsVertical[ 2 ].texture;
+			this.compositeMaterial.uniforms[ 'blurTexture4' ].value = this.renderTargetsVertical[ 3 ].texture;
+			this.compositeMaterial.uniforms[ 'blurTexture5' ].value = this.renderTargetsVertical[ 4 ].texture;
+			this.compositeMaterial.uniforms[ 'bloomStrength' ].value = strength;
+			this.compositeMaterial.uniforms[ 'bloomRadius' ].value = 0.1;
+			this.compositeMaterial.needsUpdate = true;
+			const bloomFactors = [ 1.0, 0.8, 0.6, 0.4, 0.2 ];
+			this.compositeMaterial.uniforms[ 'bloomFactors' ].value = bloomFactors;
+			this.bloomTintColors = [ new THREE.Vector3( 1, 1, 1 ), new THREE.Vector3( 1, 1, 1 ), new THREE.Vector3( 1, 1, 1 ), new THREE.Vector3( 1, 1, 1 ), new THREE.Vector3( 1, 1, 1 ) ];
+			this.compositeMaterial.uniforms[ 'bloomTintColors' ].value = this.bloomTintColors; // copy material
+
+			if ( THREE.CopyShader === undefined ) {
+
+				console.error( 'THREE.UnrealBloomPass relies on THREE.CopyShader' );
+
+			}
+
+			const copyShader = THREE.CopyShader;
+			this.copyUniforms = THREE.UniformsUtils.clone( copyShader.uniforms );
+			this.copyUniforms[ 'opacity' ].value = 1.0;
+			this.materialCopy = new THREE.ShaderMaterial( {
+				uniforms: this.copyUniforms,
+				vertexShader: copyShader.vertexShader,
+				fragmentShader: copyShader.fragmentShader,
+				blending: THREE.AdditiveBlending,
+				depthTest: false,
+				depthWrite: false,
+				transparent: true
+			} );
+			this.enabled = true;
+			this.needsSwap = false;
+			this._oldClearColor = new THREE.Color();
+			this.oldClearAlpha = 1;
+			this.basic = new THREE.MeshBasicMaterial();
+			this.fsQuad = new THREE.FullScreenQuad( null );
+
+		}
+
+		dispose() {
+
+			for ( let i = 0; i < this.renderTargetsHorizontal.length; i ++ ) {
+
+				this.renderTargetsHorizontal[ i ].dispose();
+
+			}
+
+			for ( let i = 0; i < this.renderTargetsVertical.length; i ++ ) {
+
+				this.renderTargetsVertical[ i ].dispose();
+
+			}
+
+			this.renderTargetBright.dispose();
+
+		}
+
+		setSize( width, height ) {
+
+			let resx = Math.round( width / 2 );
+			let resy = Math.round( height / 2 );
+			this.renderTargetBright.setSize( resx, resy );
+
+			for ( let i = 0; i < this.nMips; i ++ ) {
+
+				this.renderTargetsHorizontal[ i ].setSize( resx, resy );
+				this.renderTargetsVertical[ i ].setSize( resx, resy );
+				this.separableBlurMaterials[ i ].uniforms[ 'texSize' ].value = new THREE.Vector2( resx, resy );
+				resx = Math.round( resx / 2 );
+				resy = Math.round( resy / 2 );
+
+			}
+
+		}
+
+		render( renderer, writeBuffer, readBuffer, deltaTime, maskActive ) {
+
+			renderer.getClearColor( this._oldClearColor );
+			this.oldClearAlpha = renderer.getClearAlpha();
+			const oldAutoClear = renderer.autoClear;
+			renderer.autoClear = false;
+			renderer.setClearColor( this.clearColor, 0 );
+			if ( maskActive ) renderer.state.buffers.stencil.setTest( false ); // Render input to screen
+
+			if ( this.renderToScreen ) {
+
+				this.fsQuad.material = this.basic;
+				this.basic.map = readBuffer.texture;
+				renderer.setRenderTarget( null );
+				renderer.clear();
+				this.fsQuad.render( renderer );
+
+			} // 1. Extract Bright Areas
+
+
+			this.highPassUniforms[ 'tDiffuse' ].value = readBuffer.texture;
+			this.highPassUniforms[ 'luminosityThreshold' ].value = this.threshold;
+			this.fsQuad.material = this.materialHighPassFilter;
+			renderer.setRenderTarget( this.renderTargetBright );
+			renderer.clear();
+			this.fsQuad.render( renderer ); // 2. Blur All the mips progressively
+
+			let inputRenderTarget = this.renderTargetBright;
+
+			for ( let i = 0; i < this.nMips; i ++ ) {
+
+				this.fsQuad.material = this.separableBlurMaterials[ i ];
+				this.separableBlurMaterials[ i ].uniforms[ 'colorTexture' ].value = inputRenderTarget.texture;
+				this.separableBlurMaterials[ i ].uniforms[ 'direction' ].value = UnrealBloomPass.BlurDirectionX;
+				renderer.setRenderTarget( this.renderTargetsHorizontal[ i ] );
+				renderer.clear();
+				this.fsQuad.render( renderer );
+				this.separableBlurMaterials[ i ].uniforms[ 'colorTexture' ].value = this.renderTargetsHorizontal[ i ].texture;
+				this.separableBlurMaterials[ i ].uniforms[ 'direction' ].value = UnrealBloomPass.BlurDirectionY;
+				renderer.setRenderTarget( this.renderTargetsVertical[ i ] );
+				renderer.clear();
+				this.fsQuad.render( renderer );
+				inputRenderTarget = this.renderTargetsVertical[ i ];
+
+			} // Composite All the mips
+
+
+			this.fsQuad.material = this.compositeMaterial;
+			this.compositeMaterial.uniforms[ 'bloomStrength' ].value = this.strength;
+			this.compositeMaterial.uniforms[ 'bloomRadius' ].value = this.radius;
+			this.compositeMaterial.uniforms[ 'bloomTintColors' ].value = this.bloomTintColors;
+			renderer.setRenderTarget( this.renderTargetsHorizontal[ 0 ] );
+			renderer.clear();
+			this.fsQuad.render( renderer ); // Blend it additively over the input texture
+
+			this.fsQuad.material = this.materialCopy;
+			this.copyUniforms[ 'tDiffuse' ].value = this.renderTargetsHorizontal[ 0 ].texture;
+			if ( maskActive ) renderer.state.buffers.stencil.setTest( true );
+
+			if ( this.renderToScreen ) {
+
+				renderer.setRenderTarget( null );
+				this.fsQuad.render( renderer );
+
+			} else {
+
+				renderer.setRenderTarget( readBuffer );
+				this.fsQuad.render( renderer );
+
+			} // Restore renderer settings
+
+
+			renderer.setClearColor( this._oldClearColor, this.oldClearAlpha );
+			renderer.autoClear = oldAutoClear;
+
+		}
+
+		getSeperableBlurMaterial( kernelRadius ) {
+
+			return new THREE.ShaderMaterial( {
+				defines: {
+					'KERNEL_RADIUS': kernelRadius,
+					'SIGMA': kernelRadius
+				},
+				uniforms: {
+					'colorTexture': {
+						value: null
+					},
+					'texSize': {
+						value: new THREE.Vector2( 0.5, 0.5 )
+					},
+					'direction': {
+						value: new THREE.Vector2( 0.5, 0.5 )
+					}
+				},
+				vertexShader: `varying vec2 vUv;
+				void main() {
+					vUv = uv;
+					gl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );
+				}`,
+				fragmentShader: `#include <common>
+				varying vec2 vUv;
+				uniform sampler2D colorTexture;
+				uniform vec2 texSize;
+				uniform vec2 direction;
+
+				float gaussianPdf(in float x, in float sigma) {
+					return 0.39894 * exp( -0.5 * x * x/( sigma * sigma))/sigma;
+				}
+				void main() {
+					vec2 invSize = 1.0 / texSize;
+					float fSigma = float(SIGMA);
+					float weightSum = gaussianPdf(0.0, fSigma);
+					vec3 diffuseSum = texture2D( colorTexture, vUv).rgb * weightSum;
+					for( int i = 1; i < KERNEL_RADIUS; i ++ ) {
+						float x = float(i);
+						float w = gaussianPdf(x, fSigma);
+						vec2 uvOffset = direction * invSize * x;
+						vec3 sample1 = texture2D( colorTexture, vUv + uvOffset).rgb;
+						vec3 sample2 = texture2D( colorTexture, vUv - uvOffset).rgb;
+						diffuseSum += (sample1 + sample2) * w;
+						weightSum += 2.0 * w;
+					}
+					gl_FragColor = vec4(diffuseSum/weightSum, 1.0);
+				}`
+			} );
+
+		}
+
+		getCompositeMaterial( nMips ) {
+
+			return new THREE.ShaderMaterial( {
+				defines: {
+					'NUM_MIPS': nMips
+				},
+				uniforms: {
+					'blurTexture1': {
+						value: null
+					},
+					'blurTexture2': {
+						value: null
+					},
+					'blurTexture3': {
+						value: null
+					},
+					'blurTexture4': {
+						value: null
+					},
+					'blurTexture5': {
+						value: null
+					},
+					'dirtTexture': {
+						value: null
+					},
+					'bloomStrength': {
+						value: 1.0
+					},
+					'bloomFactors': {
+						value: null
+					},
+					'bloomTintColors': {
+						value: null
+					},
+					'bloomRadius': {
+						value: 0.0
+					}
+				},
+				vertexShader: `varying vec2 vUv;
+				void main() {
+					vUv = uv;
+					gl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );
+				}`,
+				fragmentShader: `varying vec2 vUv;
+				uniform sampler2D blurTexture1;
+				uniform sampler2D blurTexture2;
+				uniform sampler2D blurTexture3;
+				uniform sampler2D blurTexture4;
+				uniform sampler2D blurTexture5;
+				uniform sampler2D dirtTexture;
+				uniform float bloomStrength;
+				uniform float bloomRadius;
+				uniform float bloomFactors[NUM_MIPS];
+				uniform vec3 bloomTintColors[NUM_MIPS];
+
+				float lerpBloomFactor(const in float factor) {
+					float mirrorFactor = 1.2 - factor;
+					return mix(factor, mirrorFactor, bloomRadius);
+				}
+
+				void main() {
+					gl_FragColor = bloomStrength * ( lerpBloomFactor(bloomFactors[0]) * vec4(bloomTintColors[0], 1.0) * texture2D(blurTexture1, vUv) +
+						lerpBloomFactor(bloomFactors[1]) * vec4(bloomTintColors[1], 1.0) * texture2D(blurTexture2, vUv) +
+						lerpBloomFactor(bloomFactors[2]) * vec4(bloomTintColors[2], 1.0) * texture2D(blurTexture3, vUv) +
+						lerpBloomFactor(bloomFactors[3]) * vec4(bloomTintColors[3], 1.0) * texture2D(blurTexture4, vUv) +
+						lerpBloomFactor(bloomFactors[4]) * vec4(bloomTintColors[4], 1.0) * texture2D(blurTexture5, vUv) );
+				}`
+			} );
+
+		}
+
+	}
+
+	UnrealBloomPass.BlurDirectionX = new THREE.Vector2( 1.0, 0.0 );
+	UnrealBloomPass.BlurDirectionY = new THREE.Vector2( 0.0, 1.0 );
+
+	THREE.UnrealBloomPass = UnrealBloomPass;
+
+} )();