Initial project import

node_modules/@react-three/drei/core/Splat.js

@@ -0,0 +1,506 @@
+import _extends from '@babel/runtime/helpers/esm/extends';
+import * as THREE from 'three';
+import * as React from 'react';
+import { extend, useThree, useLoader, useFrame } from '@react-three/fiber';
+import { shaderMaterial } from './shaderMaterial.js';
+import { version } from '../helpers/constants.js';
+
+const SplatMaterial = /* @__PURE__ */shaderMaterial({
+  alphaTest: 0,
+  viewport: /* @__PURE__ */new THREE.Vector2(1980, 1080),
+  focal: 1000.0,
+  centerAndScaleTexture: null,
+  covAndColorTexture: null
+}, /*glsl*/`
+    precision highp sampler2D;
+    precision highp usampler2D;
+    out vec4 vColor;
+    out vec3 vPosition;
+    uniform vec2 resolution;
+    uniform vec2 viewport;
+    uniform float focal;
+    attribute uint splatIndex;
+    uniform sampler2D centerAndScaleTexture;
+    uniform usampler2D covAndColorTexture;    
+
+    vec2 unpackInt16(in uint value) {
+      int v = int(value);
+      int v0 = v >> 16;
+      int v1 = (v & 0xFFFF);
+      if((v & 0x8000) != 0)
+        v1 |= 0xFFFF0000;
+      return vec2(float(v1), float(v0));
+    }
+
+    void main () {
+      ivec2 texSize = textureSize(centerAndScaleTexture, 0);
+      ivec2 texPos = ivec2(splatIndex%uint(texSize.x), splatIndex/uint(texSize.x));
+      vec4 centerAndScaleData = texelFetch(centerAndScaleTexture, texPos, 0);
+      vec4 center = vec4(centerAndScaleData.xyz, 1);
+      vec4 camspace = modelViewMatrix * center;
+      vec4 pos2d = projectionMatrix * camspace;
+
+      float bounds = 1.2 * pos2d.w;
+      if (pos2d.z < -pos2d.w || pos2d.x < -bounds || pos2d.x > bounds
+        || pos2d.y < -bounds || pos2d.y > bounds) {
+        gl_Position = vec4(0.0, 0.0, 2.0, 1.0);
+        return;
+      }
+
+      uvec4 covAndColorData = texelFetch(covAndColorTexture, texPos, 0);
+      vec2 cov3D_M11_M12 = unpackInt16(covAndColorData.x) * centerAndScaleData.w;
+      vec2 cov3D_M13_M22 = unpackInt16(covAndColorData.y) * centerAndScaleData.w;
+      vec2 cov3D_M23_M33 = unpackInt16(covAndColorData.z) * centerAndScaleData.w;
+      mat3 Vrk = mat3(
+        cov3D_M11_M12.x, cov3D_M11_M12.y, cov3D_M13_M22.x,
+        cov3D_M11_M12.y, cov3D_M13_M22.y, cov3D_M23_M33.x,
+        cov3D_M13_M22.x, cov3D_M23_M33.x, cov3D_M23_M33.y
+      );
+
+      mat3 J = mat3(
+        focal / camspace.z, 0., -(focal * camspace.x) / (camspace.z * camspace.z),
+        0., focal / camspace.z, -(focal * camspace.y) / (camspace.z * camspace.z),
+        0., 0., 0.
+      );
+
+      mat3 W = transpose(mat3(modelViewMatrix));
+      mat3 T = W * J;
+      mat3 cov = transpose(T) * Vrk * T;
+      vec2 vCenter = vec2(pos2d) / pos2d.w;
+      float diagonal1 = cov[0][0] + 0.3;
+      float offDiagonal = cov[0][1];
+      float diagonal2 = cov[1][1] + 0.3;
+      float mid = 0.5 * (diagonal1 + diagonal2);
+      float radius = length(vec2((diagonal1 - diagonal2) / 2.0, offDiagonal));
+      float lambda1 = mid + radius;
+      float lambda2 = max(mid - radius, 0.1);
+      vec2 diagonalVector = normalize(vec2(offDiagonal, lambda1 - diagonal1));
+      vec2 v1 = min(sqrt(2.0 * lambda1), 1024.0) * diagonalVector;
+      vec2 v2 = min(sqrt(2.0 * lambda2), 1024.0) * vec2(diagonalVector.y, -diagonalVector.x);
+      uint colorUint = covAndColorData.w;
+      vColor = vec4(
+        float(colorUint & uint(0xFF)) / 255.0,
+        float((colorUint >> uint(8)) & uint(0xFF)) / 255.0,
+        float((colorUint >> uint(16)) & uint(0xFF)) / 255.0,
+        float(colorUint >> uint(24)) / 255.0
+      );
+      vPosition = position;
+
+      gl_Position = vec4(
+        vCenter 
+          + position.x * v2 / viewport * 2.0 
+          + position.y * v1 / viewport * 2.0, pos2d.z / pos2d.w, 1.0);
+    }
+    `, /*glsl*/`
+    #include <alphatest_pars_fragment>
+    #include <alphahash_pars_fragment>
+    in vec4 vColor;
+    in vec3 vPosition;
+    void main () {
+      float A = -dot(vPosition.xy, vPosition.xy);
+      if (A < -4.0) discard;
+      float B = exp(A) * vColor.a;
+      vec4 diffuseColor = vec4(vColor.rgb, B);
+      #include <alphatest_fragment>
+      #include <alphahash_fragment>
+      gl_FragColor = diffuseColor;
+      #include <tonemapping_fragment>
+      #include <${version >= 154 ? 'colorspace_fragment' : 'encodings_fragment'}>
+    }
+  `);
+function createWorker(self) {
+  let matrices = null;
+  let offset = 0;
+  function sortSplats(view, hashed = false) {
+    const vertexCount = matrices.length / 16;
+    const threshold = -0.0001;
+    let maxDepth = -Infinity;
+    let minDepth = Infinity;
+    const depthList = new Float32Array(vertexCount);
+    const sizeList = new Int32Array(depthList.buffer);
+    const validIndexList = new Int32Array(vertexCount);
+    let validCount = 0;
+    for (let i = 0; i < vertexCount; i++) {
+      // Sign of depth is reversed
+      const depth = view[0] * matrices[i * 16 + 12] + view[1] * matrices[i * 16 + 13] + view[2] * matrices[i * 16 + 14] + view[3];
+      // Skip behind of camera and small, transparent splat
+      if (hashed || depth < 0 && matrices[i * 16 + 15] > threshold * depth) {
+        depthList[validCount] = depth;
+        validIndexList[validCount] = i;
+        validCount++;
+        if (depth > maxDepth) maxDepth = depth;
+        if (depth < minDepth) minDepth = depth;
+      }
+    }
+
+    // This is a 16 bit single-pass counting sort
+    const depthInv = (256 * 256 - 1) / (maxDepth - minDepth);
+    const counts0 = new Uint32Array(256 * 256);
+    for (let i = 0; i < validCount; i++) {
+      sizeList[i] = (depthList[i] - minDepth) * depthInv | 0;
+      counts0[sizeList[i]]++;
+    }
+    const starts0 = new Uint32Array(256 * 256);
+    for (let i = 1; i < 256 * 256; i++) starts0[i] = starts0[i - 1] + counts0[i - 1];
+    const depthIndex = new Uint32Array(validCount);
+    for (let i = 0; i < validCount; i++) depthIndex[starts0[sizeList[i]]++] = validIndexList[i];
+    return depthIndex;
+  }
+  self.onmessage = e => {
+    if (e.data.method == 'push') {
+      if (offset === 0) matrices = new Float32Array(e.data.length);
+      const new_matrices = new Float32Array(e.data.matrices);
+      matrices.set(new_matrices, offset);
+      offset += new_matrices.length;
+    } else if (e.data.method == 'sort') {
+      if (matrices !== null) {
+        const indices = sortSplats(new Float32Array(e.data.view), e.data.hashed);
+        // @ts-ignore
+        self.postMessage({
+          indices,
+          key: e.data.key
+        }, [indices.buffer]);
+      }
+    }
+  };
+}
+class SplatLoader extends THREE.Loader {
+  constructor(...args) {
+    super(...args);
+    // WebGLRenderer, needs to be filled out!
+    this.gl = null;
+    // Default chunk size for lazy loading
+    this.chunkSize = 25000;
+  }
+  load(url, onLoad, onProgress, onError) {
+    const shared = {
+      gl: this.gl,
+      url: this.manager.resolveURL(url),
+      worker: new Worker(URL.createObjectURL(new Blob(['(', createWorker.toString(), ')(self)'], {
+        type: 'application/javascript'
+      }))),
+      manager: this.manager,
+      update: (target, camera, hashed) => update(camera, shared, target, hashed),
+      connect: target => connect(shared, target),
+      loading: false,
+      loaded: false,
+      loadedVertexCount: 0,
+      chunkSize: this.chunkSize,
+      totalDownloadBytes: 0,
+      numVertices: 0,
+      rowLength: 3 * 4 + 3 * 4 + 4 + 4,
+      maxVertexes: 0,
+      bufferTextureWidth: 0,
+      bufferTextureHeight: 0,
+      stream: null,
+      centerAndScaleData: null,
+      covAndColorData: null,
+      covAndColorTexture: null,
+      centerAndScaleTexture: null,
+      onProgress
+    };
+    load(shared).then(onLoad).catch(e => {
+      onError == null || onError(e);
+      shared.manager.itemError(shared.url);
+    });
+  }
+}
+async function load(shared) {
+  shared.manager.itemStart(shared.url);
+  const data = await fetch(shared.url);
+  if (data.body === null) throw 'Failed to fetch file';
+  let _totalDownloadBytes = data.headers.get('Content-Length');
+  const totalDownloadBytes = _totalDownloadBytes ? parseInt(_totalDownloadBytes) : undefined;
+  if (totalDownloadBytes == undefined) throw 'Failed to get content length';
+  shared.stream = data.body.getReader();
+  shared.totalDownloadBytes = totalDownloadBytes;
+  shared.numVertices = Math.floor(shared.totalDownloadBytes / shared.rowLength);
+  const context = shared.gl.getContext();
+  let maxTextureSize = context.getParameter(context.MAX_TEXTURE_SIZE);
+  shared.maxVertexes = maxTextureSize * maxTextureSize;
+  if (shared.numVertices > shared.maxVertexes) shared.numVertices = shared.maxVertexes;
+  shared.bufferTextureWidth = maxTextureSize;
+  shared.bufferTextureHeight = Math.floor((shared.numVertices - 1) / maxTextureSize) + 1;
+  shared.centerAndScaleData = new Float32Array(shared.bufferTextureWidth * shared.bufferTextureHeight * 4);
+  shared.covAndColorData = new Uint32Array(shared.bufferTextureWidth * shared.bufferTextureHeight * 4);
+  shared.centerAndScaleTexture = new THREE.DataTexture(shared.centerAndScaleData, shared.bufferTextureWidth, shared.bufferTextureHeight, THREE.RGBAFormat, THREE.FloatType);
+  shared.centerAndScaleTexture.needsUpdate = true;
+  shared.covAndColorTexture = new THREE.DataTexture(shared.covAndColorData, shared.bufferTextureWidth, shared.bufferTextureHeight, THREE.RGBAIntegerFormat, THREE.UnsignedIntType);
+  shared.covAndColorTexture.internalFormat = 'RGBA32UI';
+  shared.covAndColorTexture.needsUpdate = true;
+  return shared;
+}
+async function lazyLoad(shared) {
+  shared.loading = true;
+  let bytesDownloaded = 0;
+  let bytesProcessed = 0;
+  const chunks = [];
+  let lastReportedProgress = 0;
+  const lengthComputable = shared.totalDownloadBytes !== 0;
+  while (true) {
+    try {
+      const {
+        value,
+        done
+      } = await shared.stream.read();
+      if (done) break;
+      bytesDownloaded += value.length;
+      if (shared.totalDownloadBytes != undefined) {
+        const percent = bytesDownloaded / shared.totalDownloadBytes * 100;
+        if (shared.onProgress && percent - lastReportedProgress > 1) {
+          const event = new ProgressEvent('progress', {
+            lengthComputable,
+            loaded: bytesDownloaded,
+            total: shared.totalDownloadBytes
+          });
+          shared.onProgress(event);
+          lastReportedProgress = percent;
+        }
+      }
+      chunks.push(value);
+      const bytesRemains = bytesDownloaded - bytesProcessed;
+      if (shared.totalDownloadBytes != undefined && bytesRemains > shared.rowLength * shared.chunkSize) {
+        let vertexCount = Math.floor(bytesRemains / shared.rowLength);
+        const concatenatedChunksbuffer = new Uint8Array(bytesRemains);
+        let offset = 0;
+        for (const chunk of chunks) {
+          concatenatedChunksbuffer.set(chunk, offset);
+          offset += chunk.length;
+        }
+        chunks.length = 0;
+        if (bytesRemains > vertexCount * shared.rowLength) {
+          const extra_data = new Uint8Array(bytesRemains - vertexCount * shared.rowLength);
+          extra_data.set(concatenatedChunksbuffer.subarray(bytesRemains - extra_data.length, bytesRemains), 0);
+          chunks.push(extra_data);
+        }
+        const buffer = new Uint8Array(vertexCount * shared.rowLength);
+        buffer.set(concatenatedChunksbuffer.subarray(0, buffer.byteLength), 0);
+        const matrices = pushDataBuffer(shared, buffer.buffer, vertexCount);
+        shared.worker.postMessage({
+          method: 'push',
+          src: shared.url,
+          length: shared.numVertices * 16,
+          matrices: matrices.buffer
+        }, [matrices.buffer]);
+        bytesProcessed += vertexCount * shared.rowLength;
+        if (shared.onProgress) {
+          const event = new ProgressEvent('progress', {
+            lengthComputable,
+            loaded: shared.totalDownloadBytes,
+            total: shared.totalDownloadBytes
+          });
+          shared.onProgress(event);
+        }
+      }
+    } catch (error) {
+      console.error(error);
+      break;
+    }
+  }
+  if (bytesDownloaded - bytesProcessed > 0) {
+    // Concatenate the chunks into a single Uint8Array
+    let concatenatedChunks = new Uint8Array(chunks.reduce((acc, chunk) => acc + chunk.length, 0));
+    let offset = 0;
+    for (const chunk of chunks) {
+      concatenatedChunks.set(chunk, offset);
+      offset += chunk.length;
+    }
+    let numVertices = Math.floor(concatenatedChunks.byteLength / shared.rowLength);
+    const matrices = pushDataBuffer(shared, concatenatedChunks.buffer, numVertices);
+    shared.worker.postMessage({
+      method: 'push',
+      src: shared.url,
+      length: numVertices * 16,
+      matrices: matrices.buffer
+    }, [matrices.buffer]);
+  }
+  shared.loaded = true;
+  shared.manager.itemEnd(shared.url);
+}
+function update(camera, shared, target, hashed) {
+  camera.updateMatrixWorld();
+  shared.gl.getCurrentViewport(target.viewport);
+  // @ts-ignore
+  target.material.viewport.x = target.viewport.z;
+  // @ts-ignore
+  target.material.viewport.y = target.viewport.w;
+  target.material.focal = target.viewport.w / 2.0 * Math.abs(camera.projectionMatrix.elements[5]);
+  if (target.ready) {
+    if (hashed && target.sorted) return;
+    target.ready = false;
+    const view = new Float32Array([target.modelViewMatrix.elements[2], -target.modelViewMatrix.elements[6], target.modelViewMatrix.elements[10], target.modelViewMatrix.elements[14]]);
+    shared.worker.postMessage({
+      method: 'sort',
+      src: shared.url,
+      key: target.uuid,
+      view: view.buffer,
+      hashed
+    }, [view.buffer]);
+    if (hashed && shared.loaded) target.sorted = true;
+  }
+}
+function connect(shared, target) {
+  if (!shared.loading) lazyLoad(shared);
+  target.ready = false;
+  target.pm = new THREE.Matrix4();
+  target.vm1 = new THREE.Matrix4();
+  target.vm2 = new THREE.Matrix4();
+  target.viewport = new THREE.Vector4();
+  let splatIndexArray = new Uint32Array(shared.bufferTextureWidth * shared.bufferTextureHeight);
+  const splatIndexes = new THREE.InstancedBufferAttribute(splatIndexArray, 1, false);
+  splatIndexes.setUsage(THREE.DynamicDrawUsage);
+  const geometry = target.geometry = new THREE.InstancedBufferGeometry();
+  const positionsArray = new Float32Array(6 * 3);
+  const positions = new THREE.BufferAttribute(positionsArray, 3);
+  geometry.setAttribute('position', positions);
+  positions.setXYZ(2, -2.0, 2.0, 0.0);
+  positions.setXYZ(1, 2.0, 2.0, 0.0);
+  positions.setXYZ(0, -2.0, -2.0, 0.0);
+  positions.setXYZ(5, -2.0, -2.0, 0.0);
+  positions.setXYZ(4, 2.0, 2.0, 0.0);
+  positions.setXYZ(3, 2.0, -2.0, 0.0);
+  positions.needsUpdate = true;
+  geometry.setAttribute('splatIndex', splatIndexes);
+  geometry.instanceCount = 1;
+  function listener(e) {
+    if (target && e.data.key === target.uuid) {
+      let indexes = new Uint32Array(e.data.indices);
+      // @ts-ignore
+      geometry.attributes.splatIndex.set(indexes);
+      geometry.attributes.splatIndex.needsUpdate = true;
+      geometry.instanceCount = indexes.length;
+      target.ready = true;
+    }
+  }
+  shared.worker.addEventListener('message', listener);
+  async function wait() {
+    while (true) {
+      const centerAndScaleTextureProperties = shared.gl.properties.get(shared.centerAndScaleTexture);
+      const covAndColorTextureProperties = shared.gl.properties.get(shared.covAndColorTexture);
+      if (centerAndScaleTextureProperties != null && centerAndScaleTextureProperties.__webglTexture && covAndColorTextureProperties != null && covAndColorTextureProperties.__webglTexture && shared.loadedVertexCount > 0) break;
+      await new Promise(resolve => setTimeout(resolve, 10));
+    }
+    target.ready = true;
+  }
+  wait();
+  return () => shared.worker.removeEventListener('message', listener);
+}
+function pushDataBuffer(shared, buffer, vertexCount) {
+  const context = shared.gl.getContext();
+  if (shared.loadedVertexCount + vertexCount > shared.maxVertexes) vertexCount = shared.maxVertexes - shared.loadedVertexCount;
+  if (vertexCount <= 0) throw 'Failed to parse file';
+  const u_buffer = new Uint8Array(buffer);
+  const f_buffer = new Float32Array(buffer);
+  const matrices = new Float32Array(vertexCount * 16);
+  const covAndColorData_uint8 = new Uint8Array(shared.covAndColorData.buffer);
+  const covAndColorData_int16 = new Int16Array(shared.covAndColorData.buffer);
+  for (let i = 0; i < vertexCount; i++) {
+    const quat = new THREE.Quaternion(-(u_buffer[32 * i + 28 + 1] - 128) / 128.0, (u_buffer[32 * i + 28 + 2] - 128) / 128.0, (u_buffer[32 * i + 28 + 3] - 128) / 128.0, -(u_buffer[32 * i + 28 + 0] - 128) / 128.0);
+    quat.invert();
+    const center = new THREE.Vector3(f_buffer[8 * i + 0], f_buffer[8 * i + 1], -f_buffer[8 * i + 2]);
+    const scale = new THREE.Vector3(f_buffer[8 * i + 3 + 0], f_buffer[8 * i + 3 + 1], f_buffer[8 * i + 3 + 2]);
+    const mtx = new THREE.Matrix4();
+    mtx.makeRotationFromQuaternion(quat);
+    mtx.transpose();
+    mtx.scale(scale);
+    const mtx_t = mtx.clone();
+    mtx.transpose();
+    mtx.premultiply(mtx_t);
+    mtx.setPosition(center);
+    const cov_indexes = [0, 1, 2, 5, 6, 10];
+    let max_value = 0.0;
+    for (let j = 0; j < cov_indexes.length; j++) if (Math.abs(mtx.elements[cov_indexes[j]]) > max_value) max_value = Math.abs(mtx.elements[cov_indexes[j]]);
+    let destOffset = shared.loadedVertexCount * 4 + i * 4;
+    shared.centerAndScaleData[destOffset + 0] = center.x;
+    shared.centerAndScaleData[destOffset + 1] = -center.y;
+    shared.centerAndScaleData[destOffset + 2] = center.z;
+    shared.centerAndScaleData[destOffset + 3] = max_value / 32767.0;
+    destOffset = shared.loadedVertexCount * 8 + i * 4 * 2;
+    for (let j = 0; j < cov_indexes.length; j++) covAndColorData_int16[destOffset + j] = mtx.elements[cov_indexes[j]] * 32767.0 / max_value;
+
+    // RGBA
+    destOffset = shared.loadedVertexCount * 16 + (i * 4 + 3) * 4;
+    const col = new THREE.Color(u_buffer[32 * i + 24 + 0] / 255, u_buffer[32 * i + 24 + 1] / 255, u_buffer[32 * i + 24 + 2] / 255);
+    col.convertSRGBToLinear();
+    covAndColorData_uint8[destOffset + 0] = col.r * 255;
+    covAndColorData_uint8[destOffset + 1] = col.g * 255;
+    covAndColorData_uint8[destOffset + 2] = col.b * 255;
+    covAndColorData_uint8[destOffset + 3] = u_buffer[32 * i + 24 + 3];
+
+    // Store scale and transparent to remove splat in sorting process
+    mtx.elements[15] = Math.max(scale.x, scale.y, scale.z) * u_buffer[32 * i + 24 + 3] / 255.0;
+    for (let j = 0; j < 16; j++) matrices[i * 16 + j] = mtx.elements[j];
+  }
+  while (vertexCount > 0) {
+    let width = 0;
+    let height = 0;
+    const xoffset = shared.loadedVertexCount % shared.bufferTextureWidth;
+    const yoffset = Math.floor(shared.loadedVertexCount / shared.bufferTextureWidth);
+    if (shared.loadedVertexCount % shared.bufferTextureWidth != 0) {
+      width = Math.min(shared.bufferTextureWidth, xoffset + vertexCount) - xoffset;
+      height = 1;
+    } else if (Math.floor(vertexCount / shared.bufferTextureWidth) > 0) {
+      width = shared.bufferTextureWidth;
+      height = Math.floor(vertexCount / shared.bufferTextureWidth);
+    } else {
+      width = vertexCount % shared.bufferTextureWidth;
+      height = 1;
+    }
+    const centerAndScaleTextureProperties = shared.gl.properties.get(shared.centerAndScaleTexture);
+    context.bindTexture(context.TEXTURE_2D, centerAndScaleTextureProperties.__webglTexture);
+    context.texSubImage2D(context.TEXTURE_2D, 0, xoffset, yoffset, width, height, context.RGBA, context.FLOAT, shared.centerAndScaleData, shared.loadedVertexCount * 4);
+    const covAndColorTextureProperties = shared.gl.properties.get(shared.covAndColorTexture);
+    context.bindTexture(context.TEXTURE_2D, covAndColorTextureProperties.__webglTexture);
+    context.texSubImage2D(context.TEXTURE_2D, 0, xoffset, yoffset, width, height,
+    // @ts-ignore
+    context.RGBA_INTEGER, context.UNSIGNED_INT, shared.covAndColorData, shared.loadedVertexCount * 4);
+    shared.gl.resetState();
+    shared.loadedVertexCount += width * height;
+    vertexCount -= width * height;
+  }
+  return matrices;
+}
+function Splat({
+  src,
+  toneMapped = false,
+  alphaTest = 0,
+  alphaHash = false,
+  chunkSize = 25000,
+  ...props
+}) {
+  extend({
+    SplatMaterial
+  });
+  const ref = React.useRef(null);
+  const gl = useThree(state => state.gl);
+  const camera = useThree(state => state.camera);
+
+  // Shared state, globally memoized, the same url re-uses the same daza
+  const shared = useLoader(SplatLoader, src, loader => {
+    loader.gl = gl;
+    loader.chunkSize = chunkSize;
+  });
+
+  // Listen to worker results, apply them to the target mesh
+  React.useLayoutEffect(() => shared.connect(ref.current), [src]);
+  // Update the worker
+  useFrame(() => shared.update(ref.current, camera, alphaHash));
+  return /*#__PURE__*/React.createElement("mesh", _extends({
+    ref: ref,
+    frustumCulled: false
+  }, props), /*#__PURE__*/React.createElement("splatMaterial", {
+    key: `${src}/${alphaTest}/${alphaHash}${SplatMaterial.key}`,
+    transparent: !alphaHash,
+    depthTest: true,
+    alphaTest: alphaHash ? 0 : alphaTest,
+    centerAndScaleTexture: shared.centerAndScaleTexture,
+    covAndColorTexture: shared.covAndColorTexture,
+    depthWrite: alphaHash ? true : alphaTest > 0,
+    blending: alphaHash ? THREE.NormalBlending : THREE.CustomBlending,
+    blendSrcAlpha: THREE.OneFactor,
+    alphaHash: !!alphaHash,
+    toneMapped: toneMapped
+  }));
+}
+
+export { Splat };