three-stdlib/objects/ReflectorForSSRPass.cjs.map

stand-alone library of threejs examples

{"version":3,"file":"ReflectorForSSRPass.cjs","sources":["../../src/objects/ReflectorForSSRPass.js"],"sourcesContent":["import {\n  Color,\n  Matrix4,\n  Mesh,\n  PerspectiveCamera,\n  ShaderMaterial,\n  UniformsUtils,\n  Vector2,\n  Vector3,\n  WebGLRenderTarget,\n  DepthTexture,\n  UnsignedShortType,\n  NearestFilter,\n  Plane,\n  HalfFloatType,\n} from 'three'\n\nclass ReflectorForSSRPass extends Mesh {\n  static ReflectorShader = {\n    defines: {\n      DISTANCE_ATTENUATION: true,\n      FRESNEL: true,\n    },\n\n    uniforms: {\n      color: { value: null },\n      tDiffuse: { value: null },\n      tDepth: { value: null },\n      textureMatrix: { value: new Matrix4() },\n      maxDistance: { value: 180 },\n      opacity: { value: 0.5 },\n      fresnelCoe: { value: null },\n      virtualCameraNear: { value: null },\n      virtualCameraFar: { value: null },\n      virtualCameraProjectionMatrix: { value: new Matrix4() },\n      virtualCameraMatrixWorld: { value: new Matrix4() },\n      virtualCameraProjectionMatrixInverse: { value: new Matrix4() },\n      resolution: { value: new Vector2() },\n    },\n\n    vertexShader: /* glsl */ `\n\t\tuniform mat4 textureMatrix;\n\t\tvarying vec4 vUv;\n\n\t\tvoid main() {\n\n\t\t\tvUv = textureMatrix * vec4( position, 1.0 );\n\n\t\t\tgl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );\n\n\t\t}`,\n\n    fragmentShader: /* glsl */ `\n\t\tuniform vec3 color;\n\t\tuniform sampler2D tDiffuse;\n\t\tuniform sampler2D tDepth;\n\t\tuniform float maxDistance;\n\t\tuniform float opacity;\n\t\tuniform float fresnelCoe;\n\t\tuniform float virtualCameraNear;\n\t\tuniform float virtualCameraFar;\n\t\tuniform mat4 virtualCameraProjectionMatrix;\n\t\tuniform mat4 virtualCameraProjectionMatrixInverse;\n\t\tuniform mat4 virtualCameraMatrixWorld;\n\t\tuniform vec2 resolution;\n\t\tvarying vec4 vUv;\n\t\t#include <packing>\n\t\tfloat blendOverlay( float base, float blend ) {\n\t\t\treturn( base < 0.5 ? ( 2.0 * base * blend ) : ( 1.0 - 2.0 * ( 1.0 - base ) * ( 1.0 - blend ) ) );\n\t\t}\n\t\tvec3 blendOverlay( vec3 base, vec3 blend ) {\n\t\t\treturn vec3( blendOverlay( base.r, blend.r ), blendOverlay( base.g, blend.g ), blendOverlay( base.b, blend.b ) );\n\t\t}\n\t\tfloat getDepth( const in vec2 uv ) {\n\t\t\treturn texture2D( tDepth, uv ).x;\n\t\t}\n\t\tfloat getViewZ( const in float depth ) {\n\t\t\treturn perspectiveDepthToViewZ( depth, virtualCameraNear, virtualCameraFar );\n\t\t}\n\t\tvec3 getViewPosition( const in vec2 uv, const in float depth/*clip space*/, const in float clipW ) {\n\t\t\tvec4 clipPosition = vec4( ( vec3( uv, depth ) - 0.5 ) * 2.0, 1.0 );//ndc\n\t\t\tclipPosition *= clipW; //clip\n\t\t\treturn ( virtualCameraProjectionMatrixInverse * clipPosition ).xyz;//view\n\t\t}\n\t\tvoid main() {\n\t\t\tvec4 base = texture2DProj( tDiffuse, vUv );\n\t\t\t#ifdef useDepthTexture\n\t\t\t\tvec2 uv=(gl_FragCoord.xy-.5)/resolution.xy;\n\t\t\t\tuv.x=1.-uv.x;\n\t\t\t\tfloat depth = texture2DProj( tDepth, vUv ).r;\n\t\t\t\tfloat viewZ = getViewZ( depth );\n\t\t\t\tfloat clipW = virtualCameraProjectionMatrix[2][3] * viewZ+virtualCameraProjectionMatrix[3][3];\n\t\t\t\tvec3 viewPosition=getViewPosition( uv, depth, clipW );\n\t\t\t\tvec3 worldPosition=(virtualCameraMatrixWorld*vec4(viewPosition,1)).xyz;\n\t\t\t\tif(worldPosition.y>maxDistance) discard;\n\t\t\t\tfloat op=opacity;\n\t\t\t\t#ifdef DISTANCE_ATTENUATION\n\t\t\t\t\tfloat ratio=1.-(worldPosition.y/maxDistance);\n\t\t\t\t\tfloat attenuation=ratio*ratio;\n\t\t\t\t\top=opacity*attenuation;\n\t\t\t\t#endif\n\t\t\t\t#ifdef FRESNEL\n\t\t\t\t\top*=fresnelCoe;\n\t\t\t\t#endif\n\t\t\t\tgl_FragColor = vec4( blendOverlay( base.rgb, color ), op );\n\t\t\t#else\n\t\t\t\tgl_FragColor = vec4( blendOverlay( base.rgb, color ), 1.0 );\n\t\t\t#endif\n\t\t}\n\t`,\n  }\n\n  constructor(geometry, options = {}) {\n    super(geometry)\n\n    this.isReflectorForSSRPass = true\n\n    this.type = 'ReflectorForSSRPass'\n\n    const scope = this\n\n    const color = options.color !== undefined ? new Color(options.color) : new Color(0x7f7f7f)\n    const textureWidth = options.textureWidth || 512\n    const textureHeight = options.textureHeight || 512\n    const clipBias = options.clipBias || 0\n    const shader = options.shader || ReflectorForSSRPass.ReflectorShader\n    const useDepthTexture = options.useDepthTexture === true\n    const yAxis = new Vector3(0, 1, 0)\n    const vecTemp0 = new Vector3()\n    const vecTemp1 = new Vector3()\n\n    //\n\n    scope.needsUpdate = false\n    scope.maxDistance = ReflectorForSSRPass.ReflectorShader.uniforms.maxDistance.value\n    scope.opacity = ReflectorForSSRPass.ReflectorShader.uniforms.opacity.value\n    scope.color = color\n    scope.resolution = options.resolution || new Vector2(window.innerWidth, window.innerHeight)\n\n    scope._distanceAttenuation = ReflectorForSSRPass.ReflectorShader.defines.DISTANCE_ATTENUATION\n    Object.defineProperty(scope, 'distanceAttenuation', {\n      get() {\n        return scope._distanceAttenuation\n      },\n      set(val) {\n        if (scope._distanceAttenuation === val) return\n        scope._distanceAttenuation = val\n        scope.material.defines.DISTANCE_ATTENUATION = val\n        scope.material.needsUpdate = true\n      },\n    })\n\n    scope._fresnel = ReflectorForSSRPass.ReflectorShader.defines.FRESNEL\n    Object.defineProperty(scope, 'fresnel', {\n      get() {\n        return scope._fresnel\n      },\n      set(val) {\n        if (scope._fresnel === val) return\n        scope._fresnel = val\n        scope.material.defines.FRESNEL = val\n        scope.material.needsUpdate = true\n      },\n    })\n\n    const normal = new Vector3()\n    const reflectorWorldPosition = new Vector3()\n    const cameraWorldPosition = new Vector3()\n    const rotationMatrix = new Matrix4()\n    const lookAtPosition = new Vector3(0, 0, -1)\n\n    const view = new Vector3()\n    const target = new Vector3()\n\n    const textureMatrix = new Matrix4()\n    const virtualCamera = new PerspectiveCamera()\n\n    let depthTexture\n\n    if (useDepthTexture) {\n      depthTexture = new DepthTexture()\n      depthTexture.type = UnsignedShortType\n      depthTexture.minFilter = NearestFilter\n      depthTexture.magFilter = NearestFilter\n    }\n\n    const parameters = {\n      depthTexture: useDepthTexture ? depthTexture : null,\n      type: HalfFloatType,\n    }\n\n    const renderTarget = new WebGLRenderTarget(textureWidth, textureHeight, parameters)\n\n    const material = new ShaderMaterial({\n      transparent: useDepthTexture,\n      defines: Object.assign({}, ReflectorForSSRPass.ReflectorShader.defines, {\n        useDepthTexture,\n      }),\n      uniforms: UniformsUtils.clone(shader.uniforms),\n      fragmentShader: shader.fragmentShader,\n      vertexShader: shader.vertexShader,\n    })\n\n    material.uniforms['tDiffuse'].value = renderTarget.texture\n    material.uniforms['color'].value = scope.color\n    material.uniforms['textureMatrix'].value = textureMatrix\n    if (useDepthTexture) {\n      material.uniforms['tDepth'].value = renderTarget.depthTexture\n    }\n\n    this.material = material\n\n    const globalPlane = new Plane(new Vector3(0, 1, 0), clipBias)\n    const globalPlanes = [globalPlane]\n\n    this.doRender = function (renderer, scene, camera) {\n      material.uniforms['maxDistance'].value = scope.maxDistance\n      material.uniforms['color'].value = scope.color\n      material.uniforms['opacity'].value = scope.opacity\n\n      vecTemp0.copy(camera.position).normalize()\n      vecTemp1.copy(vecTemp0).reflect(yAxis)\n      material.uniforms['fresnelCoe'].value = (vecTemp0.dot(vecTemp1) + 1) / 2 // TODO: Also need to use glsl viewPosition and viewNormal per pixel.\n\n      reflectorWorldPosition.setFromMatrixPosition(scope.matrixWorld)\n      cameraWorldPosition.setFromMatrixPosition(camera.matrixWorld)\n\n      rotationMatrix.extractRotation(scope.matrixWorld)\n\n      normal.set(0, 0, 1)\n      normal.applyMatrix4(rotationMatrix)\n\n      view.subVectors(reflectorWorldPosition, cameraWorldPosition)\n\n      // Avoid rendering when reflector is facing away\n\n      if (view.dot(normal) > 0) return\n\n      view.reflect(normal).negate()\n      view.add(reflectorWorldPosition)\n\n      rotationMatrix.extractRotation(camera.matrixWorld)\n\n      lookAtPosition.set(0, 0, -1)\n      lookAtPosition.applyMatrix4(rotationMatrix)\n      lookAtPosition.add(cameraWorldPosition)\n\n      target.subVectors(reflectorWorldPosition, lookAtPosition)\n      target.reflect(normal).negate()\n      target.add(reflectorWorldPosition)\n\n      virtualCamera.position.copy(view)\n      virtualCamera.up.set(0, 1, 0)\n      virtualCamera.up.applyMatrix4(rotationMatrix)\n      virtualCamera.up.reflect(normal)\n      virtualCamera.lookAt(target)\n\n      virtualCamera.far = camera.far // Used in WebGLBackground\n\n      virtualCamera.updateMatrixWorld()\n      virtualCamera.projectionMatrix.copy(camera.projectionMatrix)\n\n      material.uniforms['virtualCameraNear'].value = camera.near\n      material.uniforms['virtualCameraFar'].value = camera.far\n      material.uniforms['virtualCameraMatrixWorld'].value = virtualCamera.matrixWorld\n      material.uniforms['virtualCameraProjectionMatrix'].value = camera.projectionMatrix\n      material.uniforms['virtualCameraProjectionMatrixInverse'].value = camera.projectionMatrixInverse\n      material.uniforms['resolution'].value = scope.resolution\n\n      // Update the texture matrix\n      textureMatrix.set(0.5, 0.0, 0.0, 0.5, 0.0, 0.5, 0.0, 0.5, 0.0, 0.0, 0.5, 0.5, 0.0, 0.0, 0.0, 1.0)\n      textureMatrix.multiply(virtualCamera.projectionMatrix)\n      textureMatrix.multiply(virtualCamera.matrixWorldInverse)\n      textureMatrix.multiply(scope.matrixWorld)\n\n      // scope.visible = false;\n\n      const currentRenderTarget = renderer.getRenderTarget()\n\n      const currentXrEnabled = renderer.xr.enabled\n      const currentShadowAutoUpdate = renderer.shadowMap.autoUpdate\n      const currentClippingPlanes = renderer.clippingPlanes\n\n      renderer.xr.enabled = false // Avoid camera modification\n      renderer.shadowMap.autoUpdate = false // Avoid re-computing shadows\n      renderer.clippingPlanes = globalPlanes\n\n      renderer.setRenderTarget(renderTarget)\n\n      renderer.state.buffers.depth.setMask(true) // make sure the depth buffer is writable so it can be properly cleared, see #18897\n\n      if (renderer.autoClear === false) renderer.clear()\n      renderer.render(scene, virtualCamera)\n\n      renderer.xr.enabled = currentXrEnabled\n      renderer.shadowMap.autoUpdate = currentShadowAutoUpdate\n      renderer.clippingPlanes = currentClippingPlanes\n\n      renderer.setRenderTarget(currentRenderTarget)\n\n      // Restore viewport\n\n      const viewport = camera.viewport\n\n      if (viewport !== undefined) {\n        renderer.state.viewport(viewport)\n      }\n\n      // scope.visible = true;\n    }\n\n    this.getRenderTarget = function () {\n      return renderTarget\n    }\n  }\n}\n\nexport { ReflectorForSSRPass 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