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Im Hintergrund läuft eine Planetensimulation, geschrieben in JavaScript und Three.js.
Die zu sehenden Texturen stammen von:
https://www.solarsystemscope.com/textures/
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371 lines
14 KiB
371 lines
14 KiB
( function () { |
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/** |
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* SAO implementation inspired from bhouston previous SAO work |
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*/ |
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class SAOPass extends THREE.Pass { |
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constructor( scene, camera, useDepthTexture = false, useNormals = false, resolution = new THREE.Vector2( 256, 256 ) ) { |
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super(); |
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this.scene = scene; |
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this.camera = camera; |
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this.clear = true; |
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this.needsSwap = false; |
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this.supportsDepthTextureExtension = useDepthTexture; |
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this.supportsNormalTexture = useNormals; |
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this.originalClearColor = new THREE.Color(); |
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this._oldClearColor = new THREE.Color(); |
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this.oldClearAlpha = 1; |
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this.params = { |
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output: 0, |
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saoBias: 0.5, |
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saoIntensity: 0.18, |
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saoScale: 1, |
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saoKernelRadius: 100, |
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saoMinResolution: 0, |
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saoBlur: true, |
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saoBlurRadius: 8, |
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saoBlurStdDev: 4, |
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saoBlurDepthCutoff: 0.01 |
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}; |
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this.resolution = new THREE.Vector2( resolution.x, resolution.y ); |
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this.saoRenderTarget = new THREE.WebGLRenderTarget( this.resolution.x, this.resolution.y, { |
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minFilter: THREE.LinearFilter, |
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magFilter: THREE.LinearFilter, |
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format: THREE.RGBAFormat |
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} ); |
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this.blurIntermediateRenderTarget = this.saoRenderTarget.clone(); |
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this.beautyRenderTarget = this.saoRenderTarget.clone(); |
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this.normalRenderTarget = new THREE.WebGLRenderTarget( this.resolution.x, this.resolution.y, { |
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minFilter: THREE.NearestFilter, |
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magFilter: THREE.NearestFilter, |
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format: THREE.RGBAFormat |
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} ); |
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this.depthRenderTarget = this.normalRenderTarget.clone(); |
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let depthTexture; |
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if ( this.supportsDepthTextureExtension ) { |
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depthTexture = new THREE.DepthTexture(); |
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depthTexture.type = THREE.UnsignedShortType; |
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this.beautyRenderTarget.depthTexture = depthTexture; |
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this.beautyRenderTarget.depthBuffer = true; |
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} |
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this.depthMaterial = new THREE.MeshDepthMaterial(); |
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this.depthMaterial.depthPacking = THREE.RGBADepthPacking; |
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this.depthMaterial.blending = THREE.NoBlending; |
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this.normalMaterial = new THREE.MeshNormalMaterial(); |
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this.normalMaterial.blending = THREE.NoBlending; |
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if ( THREE.SAOShader === undefined ) { |
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console.error( 'THREE.SAOPass relies on THREE.SAOShader' ); |
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} |
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this.saoMaterial = new THREE.ShaderMaterial( { |
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defines: Object.assign( {}, THREE.SAOShader.defines ), |
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fragmentShader: THREE.SAOShader.fragmentShader, |
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vertexShader: THREE.SAOShader.vertexShader, |
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uniforms: THREE.UniformsUtils.clone( THREE.SAOShader.uniforms ) |
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} ); |
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this.saoMaterial.extensions.derivatives = true; |
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this.saoMaterial.defines[ 'DEPTH_PACKING' ] = this.supportsDepthTextureExtension ? 0 : 1; |
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this.saoMaterial.defines[ 'NORMAL_TEXTURE' ] = this.supportsNormalTexture ? 1 : 0; |
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this.saoMaterial.defines[ 'PERSPECTIVE_CAMERA' ] = this.camera.isPerspectiveCamera ? 1 : 0; |
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this.saoMaterial.uniforms[ 'tDepth' ].value = this.supportsDepthTextureExtension ? depthTexture : this.depthRenderTarget.texture; |
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this.saoMaterial.uniforms[ 'tNormal' ].value = this.normalRenderTarget.texture; |
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this.saoMaterial.uniforms[ 'size' ].value.set( this.resolution.x, this.resolution.y ); |
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this.saoMaterial.uniforms[ 'cameraInverseProjectionMatrix' ].value.copy( this.camera.projectionMatrixInverse ); |
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this.saoMaterial.uniforms[ 'cameraProjectionMatrix' ].value = this.camera.projectionMatrix; |
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this.saoMaterial.blending = THREE.NoBlending; |
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if ( THREE.DepthLimitedBlurShader === undefined ) { |
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console.error( 'THREE.SAOPass relies on THREE.DepthLimitedBlurShader' ); |
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} |
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this.vBlurMaterial = new THREE.ShaderMaterial( { |
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uniforms: THREE.UniformsUtils.clone( THREE.DepthLimitedBlurShader.uniforms ), |
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defines: Object.assign( {}, THREE.DepthLimitedBlurShader.defines ), |
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vertexShader: THREE.DepthLimitedBlurShader.vertexShader, |
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fragmentShader: THREE.DepthLimitedBlurShader.fragmentShader |
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} ); |
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this.vBlurMaterial.defines[ 'DEPTH_PACKING' ] = this.supportsDepthTextureExtension ? 0 : 1; |
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this.vBlurMaterial.defines[ 'PERSPECTIVE_CAMERA' ] = this.camera.isPerspectiveCamera ? 1 : 0; |
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this.vBlurMaterial.uniforms[ 'tDiffuse' ].value = this.saoRenderTarget.texture; |
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this.vBlurMaterial.uniforms[ 'tDepth' ].value = this.supportsDepthTextureExtension ? depthTexture : this.depthRenderTarget.texture; |
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this.vBlurMaterial.uniforms[ 'size' ].value.set( this.resolution.x, this.resolution.y ); |
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this.vBlurMaterial.blending = THREE.NoBlending; |
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this.hBlurMaterial = new THREE.ShaderMaterial( { |
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uniforms: THREE.UniformsUtils.clone( THREE.DepthLimitedBlurShader.uniforms ), |
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defines: Object.assign( {}, THREE.DepthLimitedBlurShader.defines ), |
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vertexShader: THREE.DepthLimitedBlurShader.vertexShader, |
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fragmentShader: THREE.DepthLimitedBlurShader.fragmentShader |
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} ); |
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this.hBlurMaterial.defines[ 'DEPTH_PACKING' ] = this.supportsDepthTextureExtension ? 0 : 1; |
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this.hBlurMaterial.defines[ 'PERSPECTIVE_CAMERA' ] = this.camera.isPerspectiveCamera ? 1 : 0; |
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this.hBlurMaterial.uniforms[ 'tDiffuse' ].value = this.blurIntermediateRenderTarget.texture; |
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this.hBlurMaterial.uniforms[ 'tDepth' ].value = this.supportsDepthTextureExtension ? depthTexture : this.depthRenderTarget.texture; |
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this.hBlurMaterial.uniforms[ 'size' ].value.set( this.resolution.x, this.resolution.y ); |
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this.hBlurMaterial.blending = THREE.NoBlending; |
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if ( THREE.CopyShader === undefined ) { |
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console.error( 'THREE.SAOPass relies on THREE.CopyShader' ); |
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} |
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this.materialCopy = new THREE.ShaderMaterial( { |
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uniforms: THREE.UniformsUtils.clone( THREE.CopyShader.uniforms ), |
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vertexShader: THREE.CopyShader.vertexShader, |
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fragmentShader: THREE.CopyShader.fragmentShader, |
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blending: THREE.NoBlending |
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} ); |
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this.materialCopy.transparent = true; |
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this.materialCopy.depthTest = false; |
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this.materialCopy.depthWrite = false; |
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this.materialCopy.blending = THREE.CustomBlending; |
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this.materialCopy.blendSrc = THREE.DstColorFactor; |
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this.materialCopy.blendDst = THREE.ZeroFactor; |
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this.materialCopy.blendEquation = THREE.AddEquation; |
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this.materialCopy.blendSrcAlpha = THREE.DstAlphaFactor; |
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this.materialCopy.blendDstAlpha = THREE.ZeroFactor; |
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this.materialCopy.blendEquationAlpha = THREE.AddEquation; |
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if ( THREE.UnpackDepthRGBAShader === undefined ) { |
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console.error( 'THREE.SAOPass relies on THREE.UnpackDepthRGBAShader' ); |
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} |
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this.depthCopy = new THREE.ShaderMaterial( { |
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uniforms: THREE.UniformsUtils.clone( THREE.UnpackDepthRGBAShader.uniforms ), |
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vertexShader: THREE.UnpackDepthRGBAShader.vertexShader, |
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fragmentShader: THREE.UnpackDepthRGBAShader.fragmentShader, |
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blending: THREE.NoBlending |
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} ); |
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this.fsQuad = new THREE.FullScreenQuad( null ); |
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} |
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render( renderer, writeBuffer, readBuffer |
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/*, deltaTime, maskActive*/ |
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) { |
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// Rendering readBuffer first when rendering to screen |
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if ( this.renderToScreen ) { |
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this.materialCopy.blending = THREE.NoBlending; |
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this.materialCopy.uniforms[ 'tDiffuse' ].value = readBuffer.texture; |
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this.materialCopy.needsUpdate = true; |
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this.renderPass( renderer, this.materialCopy, null ); |
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} |
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if ( this.params.output === 1 ) { |
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return; |
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} |
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renderer.getClearColor( this._oldClearColor ); |
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this.oldClearAlpha = renderer.getClearAlpha(); |
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const oldAutoClear = renderer.autoClear; |
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renderer.autoClear = false; |
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renderer.setRenderTarget( this.depthRenderTarget ); |
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renderer.clear(); |
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this.saoMaterial.uniforms[ 'bias' ].value = this.params.saoBias; |
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this.saoMaterial.uniforms[ 'intensity' ].value = this.params.saoIntensity; |
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this.saoMaterial.uniforms[ 'scale' ].value = this.params.saoScale; |
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this.saoMaterial.uniforms[ 'kernelRadius' ].value = this.params.saoKernelRadius; |
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this.saoMaterial.uniforms[ 'minResolution' ].value = this.params.saoMinResolution; |
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this.saoMaterial.uniforms[ 'cameraNear' ].value = this.camera.near; |
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this.saoMaterial.uniforms[ 'cameraFar' ].value = this.camera.far; // this.saoMaterial.uniforms['randomSeed'].value = Math.random(); |
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const depthCutoff = this.params.saoBlurDepthCutoff * ( this.camera.far - this.camera.near ); |
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this.vBlurMaterial.uniforms[ 'depthCutoff' ].value = depthCutoff; |
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this.hBlurMaterial.uniforms[ 'depthCutoff' ].value = depthCutoff; |
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this.vBlurMaterial.uniforms[ 'cameraNear' ].value = this.camera.near; |
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this.vBlurMaterial.uniforms[ 'cameraFar' ].value = this.camera.far; |
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this.hBlurMaterial.uniforms[ 'cameraNear' ].value = this.camera.near; |
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this.hBlurMaterial.uniforms[ 'cameraFar' ].value = this.camera.far; |
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this.params.saoBlurRadius = Math.floor( this.params.saoBlurRadius ); |
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if ( this.prevStdDev !== this.params.saoBlurStdDev || this.prevNumSamples !== this.params.saoBlurRadius ) { |
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THREE.BlurShaderUtils.configure( this.vBlurMaterial, this.params.saoBlurRadius, this.params.saoBlurStdDev, new THREE.Vector2( 0, 1 ) ); |
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THREE.BlurShaderUtils.configure( this.hBlurMaterial, this.params.saoBlurRadius, this.params.saoBlurStdDev, new THREE.Vector2( 1, 0 ) ); |
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this.prevStdDev = this.params.saoBlurStdDev; |
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this.prevNumSamples = this.params.saoBlurRadius; |
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} // Rendering scene to depth texture |
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renderer.setClearColor( 0x000000 ); |
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renderer.setRenderTarget( this.beautyRenderTarget ); |
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renderer.clear(); |
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renderer.render( this.scene, this.camera ); // Re-render scene if depth texture extension is not supported |
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if ( ! this.supportsDepthTextureExtension ) { |
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// Clear rule : far clipping plane in both RGBA and Basic encoding |
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this.renderOverride( renderer, this.depthMaterial, this.depthRenderTarget, 0x000000, 1.0 ); |
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} |
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if ( this.supportsNormalTexture ) { |
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// Clear rule : default normal is facing the camera |
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this.renderOverride( renderer, this.normalMaterial, this.normalRenderTarget, 0x7777ff, 1.0 ); |
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} // Rendering SAO texture |
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this.renderPass( renderer, this.saoMaterial, this.saoRenderTarget, 0xffffff, 1.0 ); // Blurring SAO texture |
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if ( this.params.saoBlur ) { |
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this.renderPass( renderer, this.vBlurMaterial, this.blurIntermediateRenderTarget, 0xffffff, 1.0 ); |
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this.renderPass( renderer, this.hBlurMaterial, this.saoRenderTarget, 0xffffff, 1.0 ); |
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} |
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let outputMaterial = this.materialCopy; // Setting up SAO rendering |
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if ( this.params.output === 3 ) { |
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if ( this.supportsDepthTextureExtension ) { |
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this.materialCopy.uniforms[ 'tDiffuse' ].value = this.beautyRenderTarget.depthTexture; |
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this.materialCopy.needsUpdate = true; |
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} else { |
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this.depthCopy.uniforms[ 'tDiffuse' ].value = this.depthRenderTarget.texture; |
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this.depthCopy.needsUpdate = true; |
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outputMaterial = this.depthCopy; |
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} |
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} else if ( this.params.output === 4 ) { |
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this.materialCopy.uniforms[ 'tDiffuse' ].value = this.normalRenderTarget.texture; |
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this.materialCopy.needsUpdate = true; |
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} else { |
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this.materialCopy.uniforms[ 'tDiffuse' ].value = this.saoRenderTarget.texture; |
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this.materialCopy.needsUpdate = true; |
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} // Blending depends on output, only want a THREE.CustomBlending when showing SAO |
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if ( this.params.output === 0 ) { |
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outputMaterial.blending = THREE.CustomBlending; |
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} else { |
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outputMaterial.blending = THREE.NoBlending; |
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} // Rendering SAOPass result on top of previous pass |
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this.renderPass( renderer, outputMaterial, this.renderToScreen ? null : readBuffer ); |
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renderer.setClearColor( this._oldClearColor, this.oldClearAlpha ); |
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renderer.autoClear = oldAutoClear; |
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} |
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renderPass( renderer, passMaterial, renderTarget, clearColor, clearAlpha ) { |
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// save original state |
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renderer.getClearColor( this.originalClearColor ); |
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const originalClearAlpha = renderer.getClearAlpha(); |
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const originalAutoClear = renderer.autoClear; |
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renderer.setRenderTarget( renderTarget ); // setup pass state |
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renderer.autoClear = false; |
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if ( clearColor !== undefined && clearColor !== null ) { |
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renderer.setClearColor( clearColor ); |
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renderer.setClearAlpha( clearAlpha || 0.0 ); |
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renderer.clear(); |
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} |
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this.fsQuad.material = passMaterial; |
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this.fsQuad.render( renderer ); // restore original state |
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renderer.autoClear = originalAutoClear; |
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renderer.setClearColor( this.originalClearColor ); |
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renderer.setClearAlpha( originalClearAlpha ); |
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} |
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renderOverride( renderer, overrideMaterial, renderTarget, clearColor, clearAlpha ) { |
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renderer.getClearColor( this.originalClearColor ); |
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const originalClearAlpha = renderer.getClearAlpha(); |
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const originalAutoClear = renderer.autoClear; |
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renderer.setRenderTarget( renderTarget ); |
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renderer.autoClear = false; |
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clearColor = overrideMaterial.clearColor || clearColor; |
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clearAlpha = overrideMaterial.clearAlpha || clearAlpha; |
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if ( clearColor !== undefined && clearColor !== null ) { |
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renderer.setClearColor( clearColor ); |
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renderer.setClearAlpha( clearAlpha || 0.0 ); |
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renderer.clear(); |
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} |
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this.scene.overrideMaterial = overrideMaterial; |
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renderer.render( this.scene, this.camera ); |
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this.scene.overrideMaterial = null; // restore original state |
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renderer.autoClear = originalAutoClear; |
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renderer.setClearColor( this.originalClearColor ); |
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renderer.setClearAlpha( originalClearAlpha ); |
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} |
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setSize( width, height ) { |
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this.beautyRenderTarget.setSize( width, height ); |
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this.saoRenderTarget.setSize( width, height ); |
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this.blurIntermediateRenderTarget.setSize( width, height ); |
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this.normalRenderTarget.setSize( width, height ); |
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this.depthRenderTarget.setSize( width, height ); |
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this.saoMaterial.uniforms[ 'size' ].value.set( width, height ); |
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this.saoMaterial.uniforms[ 'cameraInverseProjectionMatrix' ].value.copy( this.camera.projectionMatrixInverse ); |
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this.saoMaterial.uniforms[ 'cameraProjectionMatrix' ].value = this.camera.projectionMatrix; |
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this.saoMaterial.needsUpdate = true; |
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this.vBlurMaterial.uniforms[ 'size' ].value.set( width, height ); |
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this.vBlurMaterial.needsUpdate = true; |
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this.hBlurMaterial.uniforms[ 'size' ].value.set( width, height ); |
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this.hBlurMaterial.needsUpdate = true; |
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} |
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} |
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SAOPass.OUTPUT = { |
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'Beauty': 1, |
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'Default': 0, |
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'SAO': 2, |
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'Depth': 3, |
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'Normal': 4 |
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}; |
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THREE.SAOPass = SAOPass; |
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} )();
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