"use strict";
Object.defineProperty(exports, Symbol.toStringTag, { value: "Module" });
const THREE = require("three");
const constants = require("../_polyfill/constants.cjs");
var GeometryCompressionUtils = {
  /**
   * Make the input mesh.geometry's normal attribute encoded and compressed by 3 different methods.
   * Also will change the mesh.material to `PackedPhongMaterial` which let the vertex shader program decode the normal data.
   *
   * @param {THREE.Mesh} mesh
   * @param {String} encodeMethod		"DEFAULT" || "OCT1Byte" || "OCT2Byte" || "ANGLES"
   *
   */
  compressNormals: function(mesh, encodeMethod) {
    if (!mesh.geometry) {
      console.error("Mesh must contain geometry. ");
    }
    const normal = mesh.geometry.attributes.normal;
    if (!normal) {
      console.error("Geometry must contain normal attribute. ");
    }
    if (normal.isPacked)
      return;
    if (normal.itemSize != 3) {
      console.error("normal.itemSize is not 3, which cannot be encoded. ");
    }
    const array = normal.array;
    const count = normal.count;
    let result;
    if (encodeMethod == "DEFAULT") {
      result = new Uint8Array(count * 3);
      for (let idx = 0; idx < array.length; idx += 3) {
        const encoded = this.EncodingFuncs.defaultEncode(array[idx], array[idx + 1], array[idx + 2], 1);
        result[idx + 0] = encoded[0];
        result[idx + 1] = encoded[1];
        result[idx + 2] = encoded[2];
      }
      mesh.geometry.setAttribute("normal", new THREE.BufferAttribute(result, 3, true));
      mesh.geometry.attributes.normal.bytes = result.length * 1;
    } else if (encodeMethod == "OCT1Byte") {
      result = new Int8Array(count * 2);
      for (let idx = 0; idx < array.length; idx += 3) {
        const encoded = this.EncodingFuncs.octEncodeBest(array[idx], array[idx + 1], array[idx + 2], 1);
        result[idx / 3 * 2 + 0] = encoded[0];
        result[idx / 3 * 2 + 1] = encoded[1];
      }
      mesh.geometry.setAttribute("normal", new THREE.BufferAttribute(result, 2, true));
      mesh.geometry.attributes.normal.bytes = result.length * 1;
    } else if (encodeMethod == "OCT2Byte") {
      result = new Int16Array(count * 2);
      for (let idx = 0; idx < array.length; idx += 3) {
        const encoded = this.EncodingFuncs.octEncodeBest(array[idx], array[idx + 1], array[idx + 2], 2);
        result[idx / 3 * 2 + 0] = encoded[0];
        result[idx / 3 * 2 + 1] = encoded[1];
      }
      mesh.geometry.setAttribute("normal", new THREE.BufferAttribute(result, 2, true));
      mesh.geometry.attributes.normal.bytes = result.length * 2;
    } else if (encodeMethod == "ANGLES") {
      result = new Uint16Array(count * 2);
      for (let idx = 0; idx < array.length; idx += 3) {
        const encoded = this.EncodingFuncs.anglesEncode(array[idx], array[idx + 1], array[idx + 2]);
        result[idx / 3 * 2 + 0] = encoded[0];
        result[idx / 3 * 2 + 1] = encoded[1];
      }
      mesh.geometry.setAttribute("normal", new THREE.BufferAttribute(result, 2, true));
      mesh.geometry.attributes.normal.bytes = result.length * 2;
    } else {
      console.error("Unrecognized encoding method, should be `DEFAULT` or `ANGLES` or `OCT`. ");
    }
    mesh.geometry.attributes.normal.needsUpdate = true;
    mesh.geometry.attributes.normal.isPacked = true;
    mesh.geometry.attributes.normal.packingMethod = encodeMethod;
    if (!(mesh.material instanceof PackedPhongMaterial)) {
      mesh.material = new PackedPhongMaterial().copy(mesh.material);
    }
    if (encodeMethod == "ANGLES") {
      mesh.material.defines.USE_PACKED_NORMAL = 0;
    }
    if (encodeMethod == "OCT1Byte") {
      mesh.material.defines.USE_PACKED_NORMAL = 1;
    }
    if (encodeMethod == "OCT2Byte") {
      mesh.material.defines.USE_PACKED_NORMAL = 1;
    }
    if (encodeMethod == "DEFAULT") {
      mesh.material.defines.USE_PACKED_NORMAL = 2;
    }
  },
  /**
   * Make the input mesh.geometry's position attribute encoded and compressed.
   * Also will change the mesh.material to `PackedPhongMaterial` which let the vertex shader program decode the position data.
   *
   * @param {THREE.Mesh} mesh
   *
   */
  compressPositions: function(mesh) {
    if (!mesh.geometry) {
      console.error("Mesh must contain geometry. ");
    }
    const position = mesh.geometry.attributes.position;
    if (!position) {
      console.error("Geometry must contain position attribute. ");
    }
    if (position.isPacked)
      return;
    if (position.itemSize != 3) {
      console.error("position.itemSize is not 3, which cannot be packed. ");
    }
    const array = position.array;
    const encodingBytes = 2;
    const result = this.EncodingFuncs.quantizedEncode(array, encodingBytes);
    const quantized = result.quantized;
    const decodeMat = result.decodeMat;
    if (mesh.geometry.boundingBox == null)
      mesh.geometry.computeBoundingBox();
    if (mesh.geometry.boundingSphere == null)
      mesh.geometry.computeBoundingSphere();
    mesh.geometry.setAttribute("position", new THREE.BufferAttribute(quantized, 3));
    mesh.geometry.attributes.position.isPacked = true;
    mesh.geometry.attributes.position.needsUpdate = true;
    mesh.geometry.attributes.position.bytes = quantized.length * encodingBytes;
    if (!(mesh.material instanceof PackedPhongMaterial)) {
      mesh.material = new PackedPhongMaterial().copy(mesh.material);
    }
    mesh.material.defines.USE_PACKED_POSITION = 0;
    mesh.material.uniforms.quantizeMatPos.value = decodeMat;
    mesh.material.uniforms.quantizeMatPos.needsUpdate = true;
  },
  /**
   * Make the input mesh.geometry's uv attribute encoded and compressed.
   * Also will change the mesh.material to `PackedPhongMaterial` which let the vertex shader program decode the uv data.
   *
   * @param {THREE.Mesh} mesh
   *
   */
  compressUvs: function(mesh) {
    if (!mesh.geometry) {
      console.error("Mesh must contain geometry property. ");
    }
    const uvs = mesh.geometry.attributes.uv;
    if (!uvs) {
      console.error("Geometry must contain uv attribute. ");
    }
    if (uvs.isPacked)
      return;
    const range = { min: Infinity, max: -Infinity };
    const array = uvs.array;
    for (let i = 0; i < array.length; i++) {
      range.min = Math.min(range.min, array[i]);
      range.max = Math.max(range.max, array[i]);
    }
    let result;
    if (range.min >= -1 && range.max <= 1) {
      result = new Uint16Array(array.length);
      for (let i = 0; i < array.length; i += 2) {
        const encoded = this.EncodingFuncs.defaultEncode(array[i], array[i + 1], 0, 2);
        result[i] = encoded[0];
        result[i + 1] = encoded[1];
      }
      mesh.geometry.setAttribute("uv", new THREE.BufferAttribute(result, 2, true));
      mesh.geometry.attributes.uv.isPacked = true;
      mesh.geometry.attributes.uv.needsUpdate = true;
      mesh.geometry.attributes.uv.bytes = result.length * 2;
      if (!(mesh.material instanceof PackedPhongMaterial)) {
        mesh.material = new PackedPhongMaterial().copy(mesh.material);
      }
      mesh.material.defines.USE_PACKED_UV = 0;
    } else {
      result = this.EncodingFuncs.quantizedEncodeUV(array, 2);
      mesh.geometry.setAttribute("uv", new THREE.BufferAttribute(result.quantized, 2));
      mesh.geometry.attributes.uv.isPacked = true;
      mesh.geometry.attributes.uv.needsUpdate = true;
      mesh.geometry.attributes.uv.bytes = result.quantized.length * 2;
      if (!(mesh.material instanceof PackedPhongMaterial)) {
        mesh.material = new PackedPhongMaterial().copy(mesh.material);
      }
      mesh.material.defines.USE_PACKED_UV = 1;
      mesh.material.uniforms.quantizeMatUV.value = result.decodeMat;
      mesh.material.uniforms.quantizeMatUV.needsUpdate = true;
    }
  },
  EncodingFuncs: {
    defaultEncode: function(x, y, z, bytes) {
      if (bytes == 1) {
        const tmpx = Math.round((x + 1) * 0.5 * 255);
        const tmpy = Math.round((y + 1) * 0.5 * 255);
        const tmpz = Math.round((z + 1) * 0.5 * 255);
        return new Uint8Array([tmpx, tmpy, tmpz]);
      } else if (bytes == 2) {
        const tmpx = Math.round((x + 1) * 0.5 * 65535);
        const tmpy = Math.round((y + 1) * 0.5 * 65535);
        const tmpz = Math.round((z + 1) * 0.5 * 65535);
        return new Uint16Array([tmpx, tmpy, tmpz]);
      } else {
        console.error("number of bytes must be 1 or 2");
      }
    },
    defaultDecode: function(array, bytes) {
      if (bytes == 1) {
        return [array[0] / 255 * 2 - 1, array[1] / 255 * 2 - 1, array[2] / 255 * 2 - 1];
      } else if (bytes == 2) {
        return [array[0] / 65535 * 2 - 1, array[1] / 65535 * 2 - 1, array[2] / 65535 * 2 - 1];
      } else {
        console.error("number of bytes must be 1 or 2");
      }
    },
    // for `Angles` encoding
    anglesEncode: function(x, y, z) {
      const normal0 = parseInt(0.5 * (1 + Math.atan2(y, x) / Math.PI) * 65535);
      const normal1 = parseInt(0.5 * (1 + z) * 65535);
      return new Uint16Array([normal0, normal1]);
    },
    // for `Octahedron` encoding
    octEncodeBest: function(x, y, z, bytes) {
      var oct, dec, best, currentCos, bestCos;
      best = oct = octEncodeVec3(x, y, z, "floor", "floor");
      dec = octDecodeVec2(oct);
      bestCos = dot(x, y, z, dec);
      oct = octEncodeVec3(x, y, z, "ceil", "floor");
      dec = octDecodeVec2(oct);
      currentCos = dot(x, y, z, dec);
      if (currentCos > bestCos) {
        best = oct;
        bestCos = currentCos;
      }
      oct = octEncodeVec3(x, y, z, "floor", "ceil");
      dec = octDecodeVec2(oct);
      currentCos = dot(x, y, z, dec);
      if (currentCos > bestCos) {
        best = oct;
        bestCos = currentCos;
      }
      oct = octEncodeVec3(x, y, z, "ceil", "ceil");
      dec = octDecodeVec2(oct);
      currentCos = dot(x, y, z, dec);
      if (currentCos > bestCos) {
        best = oct;
      }
      return best;
      function octEncodeVec3(x0, y0, z0, xfunc, yfunc) {
        var x2 = x0 / (Math.abs(x0) + Math.abs(y0) + Math.abs(z0));
        var y2 = y0 / (Math.abs(x0) + Math.abs(y0) + Math.abs(z0));
        if (z < 0) {
          var tempx = (1 - Math.abs(y2)) * (x2 >= 0 ? 1 : -1);
          var tempy = (1 - Math.abs(x2)) * (y2 >= 0 ? 1 : -1);
          x2 = tempx;
          y2 = tempy;
          var diff = 1 - Math.abs(x2) - Math.abs(y2);
          if (diff > 0) {
            diff += 1e-3;
            x2 += x2 > 0 ? diff / 2 : -diff / 2;
            y2 += y2 > 0 ? diff / 2 : -diff / 2;
          }
        }
        if (bytes == 1) {
          return new Int8Array([Math[xfunc](x2 * 127.5 + (x2 < 0 ? 1 : 0)), Math[yfunc](y2 * 127.5 + (y2 < 0 ? 1 : 0))]);
        }
        if (bytes == 2) {
          return new Int16Array([
            Math[xfunc](x2 * 32767.5 + (x2 < 0 ? 1 : 0)),
            Math[yfunc](y2 * 32767.5 + (y2 < 0 ? 1 : 0))
          ]);
        }
      }
      function octDecodeVec2(oct2) {
        var x2 = oct2[0];
        var y2 = oct2[1];
        if (bytes == 1) {
          x2 /= x2 < 0 ? 127 : 128;
          y2 /= y2 < 0 ? 127 : 128;
        } else if (bytes == 2) {
          x2 /= x2 < 0 ? 32767 : 32768;
          y2 /= y2 < 0 ? 32767 : 32768;
        }
        var z2 = 1 - Math.abs(x2) - Math.abs(y2);
        if (z2 < 0) {
          var tmpx = x2;
          x2 = (1 - Math.abs(y2)) * (x2 >= 0 ? 1 : -1);
          y2 = (1 - Math.abs(tmpx)) * (y2 >= 0 ? 1 : -1);
        }
        var length = Math.sqrt(x2 * x2 + y2 * y2 + z2 * z2);
        return [x2 / length, y2 / length, z2 / length];
      }
      function dot(x2, y2, z2, vec3) {
        return x2 * vec3[0] + y2 * vec3[1] + z2 * vec3[2];
      }
    },
    quantizedEncode: function(array, bytes) {
      let quantized, segments;
      if (bytes == 1) {
        quantized = new Uint8Array(array.length);
        segments = 255;
      } else if (bytes == 2) {
        quantized = new Uint16Array(array.length);
        segments = 65535;
      } else {
        console.error("number of bytes error! ");
      }
      const decodeMat = new THREE.Matrix4();
      const min = new Float32Array(3);
      const max = new Float32Array(3);
      min[0] = min[1] = min[2] = Number.MAX_VALUE;
      max[0] = max[1] = max[2] = -Number.MAX_VALUE;
      for (let i = 0; i < array.length; i += 3) {
        min[0] = Math.min(min[0], array[i + 0]);
        min[1] = Math.min(min[1], array[i + 1]);
        min[2] = Math.min(min[2], array[i + 2]);
        max[0] = Math.max(max[0], array[i + 0]);
        max[1] = Math.max(max[1], array[i + 1]);
        max[2] = Math.max(max[2], array[i + 2]);
      }
      decodeMat.scale(
        new THREE.Vector3((max[0] - min[0]) / segments, (max[1] - min[1]) / segments, (max[2] - min[2]) / segments)
      );
      decodeMat.elements[12] = min[0];
      decodeMat.elements[13] = min[1];
      decodeMat.elements[14] = min[2];
      decodeMat.transpose();
      const multiplier = new Float32Array([
        max[0] !== min[0] ? segments / (max[0] - min[0]) : 0,
        max[1] !== min[1] ? segments / (max[1] - min[1]) : 0,
        max[2] !== min[2] ? segments / (max[2] - min[2]) : 0
      ]);
      for (let i = 0; i < array.length; i += 3) {
        quantized[i + 0] = Math.floor((array[i + 0] - min[0]) * multiplier[0]);
        quantized[i + 1] = Math.floor((array[i + 1] - min[1]) * multiplier[1]);
        quantized[i + 2] = Math.floor((array[i + 2] - min[2]) * multiplier[2]);
      }
      return {
        quantized,
        decodeMat
      };
    },
    quantizedEncodeUV: function(array, bytes) {
      let quantized, segments;
      if (bytes == 1) {
        quantized = new Uint8Array(array.length);
        segments = 255;
      } else if (bytes == 2) {
        quantized = new Uint16Array(array.length);
        segments = 65535;
      } else {
        console.error("number of bytes error! ");
      }
      const decodeMat = new THREE.Matrix3();
      const min = new Float32Array(2);
      const max = new Float32Array(2);
      min[0] = min[1] = Number.MAX_VALUE;
      max[0] = max[1] = -Number.MAX_VALUE;
      for (let i = 0; i < array.length; i += 2) {
        min[0] = Math.min(min[0], array[i + 0]);
        min[1] = Math.min(min[1], array[i + 1]);
        max[0] = Math.max(max[0], array[i + 0]);
        max[1] = Math.max(max[1], array[i + 1]);
      }
      decodeMat.scale((max[0] - min[0]) / segments, (max[1] - min[1]) / segments);
      decodeMat.elements[6] = min[0];
      decodeMat.elements[7] = min[1];
      decodeMat.transpose();
      const multiplier = new Float32Array([
        max[0] !== min[0] ? segments / (max[0] - min[0]) : 0,
        max[1] !== min[1] ? segments / (max[1] - min[1]) : 0
      ]);
      for (let i = 0; i < array.length; i += 2) {
        quantized[i + 0] = Math.floor((array[i + 0] - min[0]) * multiplier[0]);
        quantized[i + 1] = Math.floor((array[i + 1] - min[1]) * multiplier[1]);
      }
      return {
        quantized,
        decodeMat
      };
    }
  }
};
class PackedPhongMaterial extends THREE.MeshPhongMaterial {
  constructor(parameters) {
    super();
    this.defines = {};
    this.type = "PackedPhongMaterial";
    this.uniforms = THREE.UniformsUtils.merge([
      THREE.ShaderLib.phong.uniforms,
      {
        quantizeMatPos: { value: null },
        quantizeMatUV: { value: null }
      }
    ]);
    this.vertexShader = [
      "#define PHONG",
      "varying vec3 vViewPosition;",
      "#ifndef FLAT_SHADED",
      "varying vec3 vNormal;",
      "#endif",
      THREE.ShaderChunk.common,
      THREE.ShaderChunk.uv_pars_vertex,
      THREE.ShaderChunk.uv2_pars_vertex,
      THREE.ShaderChunk.displacementmap_pars_vertex,
      THREE.ShaderChunk.envmap_pars_vertex,
      THREE.ShaderChunk.color_pars_vertex,
      THREE.ShaderChunk.fog_pars_vertex,
      THREE.ShaderChunk.morphtarget_pars_vertex,
      THREE.ShaderChunk.skinning_pars_vertex,
      THREE.ShaderChunk.shadowmap_pars_vertex,
      THREE.ShaderChunk.logdepthbuf_pars_vertex,
      THREE.ShaderChunk.clipping_planes_pars_vertex,
      `#ifdef USE_PACKED_NORMAL
					#if USE_PACKED_NORMAL == 0
						vec3 decodeNormal(vec3 packedNormal)
						{
							float x = packedNormal.x * 2.0 - 1.0;
							float y = packedNormal.y * 2.0 - 1.0;
							vec2 scth = vec2(sin(x * PI), cos(x * PI));
							vec2 scphi = vec2(sqrt(1.0 - y * y), y);
							return normalize( vec3(scth.y * scphi.x, scth.x * scphi.x, scphi.y) );
						}
					#endif

					#if USE_PACKED_NORMAL == 1
						vec3 decodeNormal(vec3 packedNormal)
						{
							vec3 v = vec3(packedNormal.xy, 1.0 - abs(packedNormal.x) - abs(packedNormal.y));
							if (v.z < 0.0)
							{
								v.xy = (1.0 - abs(v.yx)) * vec2((v.x >= 0.0) ? +1.0 : -1.0, (v.y >= 0.0) ? +1.0 : -1.0);
							}
							return normalize(v);
						}
					#endif

					#if USE_PACKED_NORMAL == 2
						vec3 decodeNormal(vec3 packedNormal)
						{
							vec3 v = (packedNormal * 2.0) - 1.0;
							return normalize(v);
						}
					#endif
				#endif`,
      `#ifdef USE_PACKED_POSITION
					#if USE_PACKED_POSITION == 0
						uniform mat4 quantizeMatPos;
					#endif
				#endif`,
      `#ifdef USE_PACKED_UV
					#if USE_PACKED_UV == 1
						uniform mat3 quantizeMatUV;
					#endif
				#endif`,
      `#ifdef USE_PACKED_UV
					#if USE_PACKED_UV == 0
						vec2 decodeUV(vec2 packedUV)
						{
							vec2 uv = (packedUV * 2.0) - 1.0;
							return uv;
						}
					#endif

					#if USE_PACKED_UV == 1
						vec2 decodeUV(vec2 packedUV)
						{
							vec2 uv = ( vec3(packedUV, 1.0) * quantizeMatUV ).xy;
							return uv;
						}
					#endif
				#endif`,
      "void main() {",
      THREE.ShaderChunk.uv_vertex,
      `#ifdef USE_UV
					#ifdef USE_PACKED_UV
						vUv = decodeUV(vUv);
					#endif
				#endif`,
      THREE.ShaderChunk.uv2_vertex,
      THREE.ShaderChunk.color_vertex,
      THREE.ShaderChunk.beginnormal_vertex,
      `#ifdef USE_PACKED_NORMAL
					objectNormal = decodeNormal(objectNormal);
				#endif

				#ifdef USE_TANGENT
					vec3 objectTangent = vec3( tangent.xyz );
				#endif
				`,
      THREE.ShaderChunk.morphnormal_vertex,
      THREE.ShaderChunk.skinbase_vertex,
      THREE.ShaderChunk.skinnormal_vertex,
      THREE.ShaderChunk.defaultnormal_vertex,
      "#ifndef FLAT_SHADED",
      "	vNormal = normalize( transformedNormal );",
      "#endif",
      THREE.ShaderChunk.begin_vertex,
      `#ifdef USE_PACKED_POSITION
					#if USE_PACKED_POSITION == 0
						transformed = ( vec4(transformed, 1.0) * quantizeMatPos ).xyz;
					#endif
				#endif`,
      THREE.ShaderChunk.morphtarget_vertex,
      THREE.ShaderChunk.skinning_vertex,
      THREE.ShaderChunk.displacementmap_vertex,
      THREE.ShaderChunk.project_vertex,
      THREE.ShaderChunk.logdepthbuf_vertex,
      THREE.ShaderChunk.clipping_planes_vertex,
      "vViewPosition = - mvPosition.xyz;",
      THREE.ShaderChunk.worldpos_vertex,
      THREE.ShaderChunk.envmap_vertex,
      THREE.ShaderChunk.shadowmap_vertex,
      THREE.ShaderChunk.fog_vertex,
      "}"
    ].join("\n");
    this.fragmentShader = [
      "#define PHONG",
      "uniform vec3 diffuse;",
      "uniform vec3 emissive;",
      "uniform vec3 specular;",
      "uniform float shininess;",
      "uniform float opacity;",
      THREE.ShaderChunk.common,
      THREE.ShaderChunk.packing,
      THREE.ShaderChunk.dithering_pars_fragment,
      THREE.ShaderChunk.color_pars_fragment,
      THREE.ShaderChunk.uv_pars_fragment,
      THREE.ShaderChunk.uv2_pars_fragment,
      THREE.ShaderChunk.map_pars_fragment,
      THREE.ShaderChunk.alphamap_pars_fragment,
      THREE.ShaderChunk.aomap_pars_fragment,
      THREE.ShaderChunk.lightmap_pars_fragment,
      THREE.ShaderChunk.emissivemap_pars_fragment,
      THREE.ShaderChunk.envmap_common_pars_fragment,
      THREE.ShaderChunk.envmap_pars_fragment,
      THREE.ShaderChunk.cube_uv_reflection_fragment,
      THREE.ShaderChunk.fog_pars_fragment,
      THREE.ShaderChunk.bsdfs,
      THREE.ShaderChunk.lights_pars_begin,
      THREE.ShaderChunk.lights_phong_pars_fragment,
      THREE.ShaderChunk.shadowmap_pars_fragment,
      THREE.ShaderChunk.bumpmap_pars_fragment,
      THREE.ShaderChunk.normalmap_pars_fragment,
      THREE.ShaderChunk.specularmap_pars_fragment,
      THREE.ShaderChunk.logdepthbuf_pars_fragment,
      THREE.ShaderChunk.clipping_planes_pars_fragment,
      "void main() {",
      THREE.ShaderChunk.clipping_planes_fragment,
      "vec4 diffuseColor = vec4( diffuse, opacity );",
      "ReflectedLight reflectedLight = ReflectedLight( vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ) );",
      "vec3 totalEmissiveRadiance = emissive;",
      THREE.ShaderChunk.logdepthbuf_fragment,
      THREE.ShaderChunk.map_fragment,
      THREE.ShaderChunk.color_fragment,
      THREE.ShaderChunk.alphamap_fragment,
      THREE.ShaderChunk.alphatest_fragment,
      THREE.ShaderChunk.specularmap_fragment,
      THREE.ShaderChunk.normal_fragment_begin,
      THREE.ShaderChunk.normal_fragment_maps,
      THREE.ShaderChunk.emissivemap_fragment,
      // accumulation
      THREE.ShaderChunk.lights_phong_fragment,
      THREE.ShaderChunk.lights_fragment_begin,
      THREE.ShaderChunk.lights_fragment_maps,
      THREE.ShaderChunk.lights_fragment_end,
      // modulation
      THREE.ShaderChunk.aomap_fragment,
      "vec3 outgoingLight = reflectedLight.directDiffuse + reflectedLight.indirectDiffuse + reflectedLight.directSpecular + reflectedLight.indirectSpecular + totalEmissiveRadiance;",
      THREE.ShaderChunk.envmap_fragment,
      "gl_FragColor = vec4( outgoingLight, diffuseColor.a );",
      THREE.ShaderChunk.tonemapping_fragment,
      constants.version >= 154 ? THREE.ShaderChunk.colorspace_fragment : THREE.ShaderChunk.encodings_fragment,
      THREE.ShaderChunk.fog_fragment,
      THREE.ShaderChunk.premultiplied_alpha_fragment,
      THREE.ShaderChunk.dithering_fragment,
      "}"
    ].join("\n");
    this.setValues(parameters);
  }
}
exports.GeometryCompressionUtils = GeometryCompressionUtils;
exports.PackedPhongMaterial = PackedPhongMaterial;
//# sourceMappingURL=GeometryCompressionUtils.cjs.map