import { DataTextureLoader, HalfFloatType, CubeTexture, RGBAFormat, LinearFilter, DataUtils } from "three";
let UPNG;
function init() {
  if (UPNG)
    return UPNG;
  UPNG = {};
  UPNG.toRGBA8 = function(out) {
    var w = out.width, h = out.height;
    if (out.tabs.acTL == null)
      return [UPNG.toRGBA8.decodeImage(out.data, w, h, out).buffer];
    var frms = [];
    if (out.frames[0].data == null)
      out.frames[0].data = out.data;
    var len = w * h * 4, img = new Uint8Array(len), empty = new Uint8Array(len), prev = new Uint8Array(len);
    for (var i = 0; i < out.frames.length; i++) {
      var frm = out.frames[i];
      var fx = frm.rect.x, fy = frm.rect.y, fw = frm.rect.width, fh = frm.rect.height;
      var fdata = UPNG.toRGBA8.decodeImage(frm.data, fw, fh, out);
      if (i != 0)
        for (var j = 0; j < len; j++)
          prev[j] = img[j];
      if (frm.blend == 0)
        UPNG._copyTile(fdata, fw, fh, img, w, h, fx, fy, 0);
      else if (frm.blend == 1)
        UPNG._copyTile(fdata, fw, fh, img, w, h, fx, fy, 1);
      frms.push(img.buffer.slice(0));
      if (frm.dispose == 1)
        UPNG._copyTile(empty, fw, fh, img, w, h, fx, fy, 0);
      else if (frm.dispose == 2)
        for (var j = 0; j < len; j++)
          img[j] = prev[j];
    }
    return frms;
  };
  UPNG.toRGBA8.decodeImage = function(data, w, h, out) {
    var area = w * h, bpp = UPNG.decode._getBPP(out);
    var bpl = Math.ceil(w * bpp / 8);
    var bf = new Uint8Array(area * 4), bf32 = new Uint32Array(bf.buffer);
    var ctype = out.ctype, depth = out.depth;
    var rs = UPNG._bin.readUshort;
    if (ctype == 6) {
      var qarea = area << 2;
      if (depth == 8) {
        for (var i = 0; i < qarea; i += 4) {
          bf[i] = data[i];
          bf[i + 1] = data[i + 1];
          bf[i + 2] = data[i + 2];
          bf[i + 3] = data[i + 3];
        }
      }
      if (depth == 16) {
        for (var i = 0; i < qarea; i++) {
          bf[i] = data[i << 1];
        }
      }
    } else if (ctype == 2) {
      var ts = out.tabs["tRNS"];
      if (ts == null) {
        if (depth == 8) {
          for (var i = 0; i < area; i++) {
            var ti = i * 3;
            bf32[i] = 255 << 24 | data[ti + 2] << 16 | data[ti + 1] << 8 | data[ti];
          }
        }
        if (depth == 16) {
          for (var i = 0; i < area; i++) {
            var ti = i * 6;
            bf32[i] = 255 << 24 | data[ti + 4] << 16 | data[ti + 2] << 8 | data[ti];
          }
        }
      } else {
        var tr = ts[0], tg = ts[1], tb = ts[2];
        if (depth == 8) {
          for (var i = 0; i < area; i++) {
            var qi = i << 2, ti = i * 3;
            bf32[i] = 255 << 24 | data[ti + 2] << 16 | data[ti + 1] << 8 | data[ti];
            if (data[ti] == tr && data[ti + 1] == tg && data[ti + 2] == tb)
              bf[qi + 3] = 0;
          }
        }
        if (depth == 16) {
          for (var i = 0; i < area; i++) {
            var qi = i << 2, ti = i * 6;
            bf32[i] = 255 << 24 | data[ti + 4] << 16 | data[ti + 2] << 8 | data[ti];
            if (rs(data, ti) == tr && rs(data, ti + 2) == tg && rs(data, ti + 4) == tb)
              bf[qi + 3] = 0;
          }
        }
      }
    } else if (ctype == 3) {
      var p = out.tabs["PLTE"], ap = out.tabs["tRNS"], tl = ap ? ap.length : 0;
      if (depth == 1) {
        for (var y = 0; y < h; y++) {
          var s0 = y * bpl, t0 = y * w;
          for (var i = 0; i < w; i++) {
            var qi = t0 + i << 2, j = data[s0 + (i >> 3)] >> 7 - ((i & 7) << 0) & 1, cj = 3 * j;
            bf[qi] = p[cj];
            bf[qi + 1] = p[cj + 1];
            bf[qi + 2] = p[cj + 2];
            bf[qi + 3] = j < tl ? ap[j] : 255;
          }
        }
      }
      if (depth == 2) {
        for (var y = 0; y < h; y++) {
          var s0 = y * bpl, t0 = y * w;
          for (var i = 0; i < w; i++) {
            var qi = t0 + i << 2, j = data[s0 + (i >> 2)] >> 6 - ((i & 3) << 1) & 3, cj = 3 * j;
            bf[qi] = p[cj];
            bf[qi + 1] = p[cj + 1];
            bf[qi + 2] = p[cj + 2];
            bf[qi + 3] = j < tl ? ap[j] : 255;
          }
        }
      }
      if (depth == 4) {
        for (var y = 0; y < h; y++) {
          var s0 = y * bpl, t0 = y * w;
          for (var i = 0; i < w; i++) {
            var qi = t0 + i << 2, j = data[s0 + (i >> 1)] >> 4 - ((i & 1) << 2) & 15, cj = 3 * j;
            bf[qi] = p[cj];
            bf[qi + 1] = p[cj + 1];
            bf[qi + 2] = p[cj + 2];
            bf[qi + 3] = j < tl ? ap[j] : 255;
          }
        }
      }
      if (depth == 8) {
        for (var i = 0; i < area; i++) {
          var qi = i << 2, j = data[i], cj = 3 * j;
          bf[qi] = p[cj];
          bf[qi + 1] = p[cj + 1];
          bf[qi + 2] = p[cj + 2];
          bf[qi + 3] = j < tl ? ap[j] : 255;
        }
      }
    } else if (ctype == 4) {
      if (depth == 8) {
        for (var i = 0; i < area; i++) {
          var qi = i << 2, di = i << 1, gr = data[di];
          bf[qi] = gr;
          bf[qi + 1] = gr;
          bf[qi + 2] = gr;
          bf[qi + 3] = data[di + 1];
        }
      }
      if (depth == 16) {
        for (var i = 0; i < area; i++) {
          var qi = i << 2, di = i << 2, gr = data[di];
          bf[qi] = gr;
          bf[qi + 1] = gr;
          bf[qi + 2] = gr;
          bf[qi + 3] = data[di + 2];
        }
      }
    } else if (ctype == 0) {
      var tr = out.tabs["tRNS"] ? out.tabs["tRNS"] : -1;
      for (var y = 0; y < h; y++) {
        var off = y * bpl, to = y * w;
        if (depth == 1) {
          for (var x = 0; x < w; x++) {
            var gr = 255 * (data[off + (x >>> 3)] >>> 7 - (x & 7) & 1), al = gr == tr * 255 ? 0 : 255;
            bf32[to + x] = al << 24 | gr << 16 | gr << 8 | gr;
          }
        } else if (depth == 2) {
          for (var x = 0; x < w; x++) {
            var gr = 85 * (data[off + (x >>> 2)] >>> 6 - ((x & 3) << 1) & 3), al = gr == tr * 85 ? 0 : 255;
            bf32[to + x] = al << 24 | gr << 16 | gr << 8 | gr;
          }
        } else if (depth == 4) {
          for (var x = 0; x < w; x++) {
            var gr = 17 * (data[off + (x >>> 1)] >>> 4 - ((x & 1) << 2) & 15), al = gr == tr * 17 ? 0 : 255;
            bf32[to + x] = al << 24 | gr << 16 | gr << 8 | gr;
          }
        } else if (depth == 8) {
          for (var x = 0; x < w; x++) {
            var gr = data[off + x], al = gr == tr ? 0 : 255;
            bf32[to + x] = al << 24 | gr << 16 | gr << 8 | gr;
          }
        } else if (depth == 16) {
          for (var x = 0; x < w; x++) {
            var gr = data[off + (x << 1)], al = rs(data, off + (x << 1)) == tr ? 0 : 255;
            bf32[to + x] = al << 24 | gr << 16 | gr << 8 | gr;
          }
        }
      }
    }
    return bf;
  };
  UPNG.decode = function(buff) {
    var data = new Uint8Array(buff), offset = 8, bin = UPNG._bin, rUs = bin.readUshort, rUi = bin.readUint;
    var out = { tabs: {}, frames: [] };
    var dd = new Uint8Array(data.length), doff = 0;
    var fd, foff = 0;
    var text, keyw, bfr;
    var mgck = [137, 80, 78, 71, 13, 10, 26, 10];
    for (var i = 0; i < 8; i++)
      if (data[i] != mgck[i])
        throw new Error("The input is not a PNG file!");
    while (offset < data.length) {
      var len = bin.readUint(data, offset);
      offset += 4;
      var type = bin.readASCII(data, offset, 4);
      offset += 4;
      if (type == "IHDR") {
        UPNG.decode._IHDR(data, offset, out);
      } else if (type == "CgBI") {
        out.tabs[type] = data.slice(offset, offset + 4);
      } else if (type == "IDAT") {
        for (var i = 0; i < len; i++)
          dd[doff + i] = data[offset + i];
        doff += len;
      } else if (type == "acTL") {
        out.tabs[type] = { num_frames: rUi(data, offset), num_plays: rUi(data, offset + 4) };
        fd = new Uint8Array(data.length);
      } else if (type == "fcTL") {
        if (foff != 0) {
          var fr = out.frames[out.frames.length - 1];
          fr.data = UPNG.decode._decompress(out, fd.slice(0, foff), fr.rect.width, fr.rect.height);
          foff = 0;
        }
        var rct = {
          x: rUi(data, offset + 12),
          y: rUi(data, offset + 16),
          width: rUi(data, offset + 4),
          height: rUi(data, offset + 8)
        };
        var del = rUs(data, offset + 22);
        del = rUs(data, offset + 20) / (del == 0 ? 100 : del);
        var frm = { rect: rct, delay: Math.round(del * 1e3), dispose: data[offset + 24], blend: data[offset + 25] };
        out.frames.push(frm);
      } else if (type == "fdAT") {
        for (var i = 0; i < len - 4; i++)
          fd[foff + i] = data[offset + i + 4];
        foff += len - 4;
      } else if (type == "pHYs") {
        out.tabs[type] = [bin.readUint(data, offset), bin.readUint(data, offset + 4), data[offset + 8]];
      } else if (type == "cHRM") {
        out.tabs[type] = [];
        for (var i = 0; i < 8; i++)
          out.tabs[type].push(bin.readUint(data, offset + i * 4));
      } else if (type == "tEXt" || type == "zTXt") {
        if (out.tabs[type] == null)
          out.tabs[type] = {};
        var nz = bin.nextZero(data, offset);
        keyw = bin.readASCII(data, offset, nz - offset);
        var tl = offset + len - nz - 1;
        if (type == "tEXt") {
          text = bin.readASCII(data, nz + 1, tl);
        } else {
          bfr = UPNG.decode._inflate(data.slice(nz + 2, nz + 2 + tl));
          text = bin.readUTF8(bfr, 0, bfr.length);
        }
        out.tabs[type][keyw] = text;
      } else if (type == "iTXt") {
        if (out.tabs[type] == null)
          out.tabs[type] = {};
        var nz = 0, off = offset;
        nz = bin.nextZero(data, off);
        keyw = bin.readASCII(data, off, nz - off);
        off = nz + 1;
        var cflag = data[off];
        off += 2;
        nz = bin.nextZero(data, off);
        bin.readASCII(data, off, nz - off);
        off = nz + 1;
        nz = bin.nextZero(data, off);
        bin.readUTF8(data, off, nz - off);
        off = nz + 1;
        var tl = len - (off - offset);
        if (cflag == 0) {
          text = bin.readUTF8(data, off, tl);
        } else {
          bfr = UPNG.decode._inflate(data.slice(off, off + tl));
          text = bin.readUTF8(bfr, 0, bfr.length);
        }
        out.tabs[type][keyw] = text;
      } else if (type == "PLTE") {
        out.tabs[type] = bin.readBytes(data, offset, len);
      } else if (type == "hIST") {
        var pl = out.tabs["PLTE"].length / 3;
        out.tabs[type] = [];
        for (var i = 0; i < pl; i++)
          out.tabs[type].push(rUs(data, offset + i * 2));
      } else if (type == "tRNS") {
        if (out.ctype == 3)
          out.tabs[type] = bin.readBytes(data, offset, len);
        else if (out.ctype == 0)
          out.tabs[type] = rUs(data, offset);
        else if (out.ctype == 2)
          out.tabs[type] = [rUs(data, offset), rUs(data, offset + 2), rUs(data, offset + 4)];
      } else if (type == "gAMA") {
        out.tabs[type] = bin.readUint(data, offset) / 1e5;
      } else if (type == "sRGB") {
        out.tabs[type] = data[offset];
      } else if (type == "bKGD") {
        if (out.ctype == 0 || out.ctype == 4) {
          out.tabs[type] = [rUs(data, offset)];
        } else if (out.ctype == 2 || out.ctype == 6) {
          out.tabs[type] = [rUs(data, offset), rUs(data, offset + 2), rUs(data, offset + 4)];
        } else if (out.ctype == 3) {
          out.tabs[type] = data[offset];
        }
      } else if (type == "IEND") {
        break;
      }
      offset += len;
      bin.readUint(data, offset);
      offset += 4;
    }
    if (foff != 0) {
      var fr = out.frames[out.frames.length - 1];
      fr.data = UPNG.decode._decompress(out, fd.slice(0, foff), fr.rect.width, fr.rect.height);
    }
    out.data = UPNG.decode._decompress(out, dd, out.width, out.height);
    delete out.compress;
    delete out.interlace;
    delete out.filter;
    return out;
  };
  UPNG.decode._decompress = function(out, dd, w, h) {
    var bpp = UPNG.decode._getBPP(out), bpl = Math.ceil(w * bpp / 8), buff = new Uint8Array((bpl + 1 + out.interlace) * h);
    if (out.tabs["CgBI"])
      dd = UPNG.inflateRaw(dd, buff);
    else
      dd = UPNG.decode._inflate(dd, buff);
    if (out.interlace == 0)
      dd = UPNG.decode._filterZero(dd, out, 0, w, h);
    else if (out.interlace == 1)
      dd = UPNG.decode._readInterlace(dd, out);
    return dd;
  };
  UPNG.decode._inflate = function(data, buff) {
    var out = UPNG["inflateRaw"](new Uint8Array(data.buffer, 2, data.length - 6), buff);
    return out;
  };
  UPNG.inflateRaw = function() {
    var H = {};
    H.H = {};
    H.H.N = function(N, W) {
      var R = Uint8Array, i = 0, m = 0, J = 0, h = 0, Q = 0, X = 0, u = 0, w = 0, d = 0, v, C;
      if (N[0] == 3 && N[1] == 0)
        return W ? W : new R(0);
      var V = H.H, n = V.b, A = V.e, l = V.R, M = V.n, I = V.A, e = V.Z, b = V.m, Z = W == null;
      if (Z)
        W = new R(N.length >>> 2 << 5);
      while (i == 0) {
        i = n(N, d, 1);
        m = n(N, d + 1, 2);
        d += 3;
        if (m == 0) {
          if ((d & 7) != 0)
            d += 8 - (d & 7);
          var D = (d >>> 3) + 4, q = N[D - 4] | N[D - 3] << 8;
          if (Z)
            W = H.H.W(W, w + q);
          W.set(new R(N.buffer, N.byteOffset + D, q), w);
          d = D + q << 3;
          w += q;
          continue;
        }
        if (Z)
          W = H.H.W(W, w + (1 << 17));
        if (m == 1) {
          v = b.J;
          C = b.h;
          X = (1 << 9) - 1;
          u = (1 << 5) - 1;
        }
        if (m == 2) {
          J = A(N, d, 5) + 257;
          h = A(N, d + 5, 5) + 1;
          Q = A(N, d + 10, 4) + 4;
          d += 14;
          var j = 1;
          for (var c = 0; c < 38; c += 2) {
            b.Q[c] = 0;
            b.Q[c + 1] = 0;
          }
          for (var c = 0; c < Q; c++) {
            var K = A(N, d + c * 3, 3);
            b.Q[(b.X[c] << 1) + 1] = K;
            if (K > j)
              j = K;
          }
          d += 3 * Q;
          M(b.Q, j);
          I(b.Q, j, b.u);
          v = b.w;
          C = b.d;
          d = l(b.u, (1 << j) - 1, J + h, N, d, b.v);
          var r = V.V(b.v, 0, J, b.C);
          X = (1 << r) - 1;
          var S = V.V(b.v, J, h, b.D);
          u = (1 << S) - 1;
          M(b.C, r);
          I(b.C, r, v);
          M(b.D, S);
          I(b.D, S, C);
        }
        while (true) {
          var T = v[e(N, d) & X];
          d += T & 15;
          var p = T >>> 4;
          if (p >>> 8 == 0) {
            W[w++] = p;
          } else if (p == 256) {
            break;
          } else {
            var z = w + p - 254;
            if (p > 264) {
              var _ = b.q[p - 257];
              z = w + (_ >>> 3) + A(N, d, _ & 7);
              d += _ & 7;
            }
            var $ = C[e(N, d) & u];
            d += $ & 15;
            var s = $ >>> 4, Y = b.c[s], a = (Y >>> 4) + n(N, d, Y & 15);
            d += Y & 15;
            while (w < z) {
              W[w] = W[w++ - a];
              W[w] = W[w++ - a];
              W[w] = W[w++ - a];
              W[w] = W[w++ - a];
            }
            w = z;
          }
        }
      }
      return W.length == w ? W : W.slice(0, w);
    };
    H.H.W = function(N, W) {
      var R = N.length;
      if (W <= R)
        return N;
      var V = new Uint8Array(R << 1);
      V.set(N, 0);
      return V;
    };
    H.H.R = function(N, W, R, V, n, A) {
      var l = H.H.e, M = H.H.Z, I = 0;
      while (I < R) {
        var e = N[M(V, n) & W];
        n += e & 15;
        var b = e >>> 4;
        if (b <= 15) {
          A[I] = b;
          I++;
        } else {
          var Z = 0, m = 0;
          if (b == 16) {
            m = 3 + l(V, n, 2);
            n += 2;
            Z = A[I - 1];
          } else if (b == 17) {
            m = 3 + l(V, n, 3);
            n += 3;
          } else if (b == 18) {
            m = 11 + l(V, n, 7);
            n += 7;
          }
          var J = I + m;
          while (I < J) {
            A[I] = Z;
            I++;
          }
        }
      }
      return n;
    };
    H.H.V = function(N, W, R, V) {
      var n = 0, A = 0, l = V.length >>> 1;
      while (A < R) {
        var M = N[A + W];
        V[A << 1] = 0;
        V[(A << 1) + 1] = M;
        if (M > n)
          n = M;
        A++;
      }
      while (A < l) {
        V[A << 1] = 0;
        V[(A << 1) + 1] = 0;
        A++;
      }
      return n;
    };
    H.H.n = function(N, W) {
      var R = H.H.m, V = N.length, n, A, l, M, I, e = R.j;
      for (var M = 0; M <= W; M++)
        e[M] = 0;
      for (M = 1; M < V; M += 2)
        e[N[M]]++;
      var b = R.K;
      n = 0;
      e[0] = 0;
      for (A = 1; A <= W; A++) {
        n = n + e[A - 1] << 1;
        b[A] = n;
      }
      for (l = 0; l < V; l += 2) {
        I = N[l + 1];
        if (I != 0) {
          N[l] = b[I];
          b[I]++;
        }
      }
    };
    H.H.A = function(N, W, R) {
      var V = N.length, n = H.H.m, A = n.r;
      for (var l = 0; l < V; l += 2) {
        if (N[l + 1] != 0) {
          var M = l >> 1, I = N[l + 1], e = M << 4 | I, b = W - I, Z = N[l] << b, m = Z + (1 << b);
          while (Z != m) {
            var J = A[Z] >>> 15 - W;
            R[J] = e;
            Z++;
          }
        }
      }
    };
    H.H.l = function(N, W) {
      var R = H.H.m.r, V = 15 - W;
      for (var n = 0; n < N.length; n += 2) {
        var A = N[n] << W - N[n + 1];
        N[n] = R[A] >>> V;
      }
    };
    H.H.M = function(N, W, R) {
      R = R << (W & 7);
      var V = W >>> 3;
      N[V] |= R;
      N[V + 1] |= R >>> 8;
    };
    H.H.I = function(N, W, R) {
      R = R << (W & 7);
      var V = W >>> 3;
      N[V] |= R;
      N[V + 1] |= R >>> 8;
      N[V + 2] |= R >>> 16;
    };
    H.H.e = function(N, W, R) {
      return (N[W >>> 3] | N[(W >>> 3) + 1] << 8) >>> (W & 7) & (1 << R) - 1;
    };
    H.H.b = function(N, W, R) {
      return (N[W >>> 3] | N[(W >>> 3) + 1] << 8 | N[(W >>> 3) + 2] << 16) >>> (W & 7) & (1 << R) - 1;
    };
    H.H.Z = function(N, W) {
      return (N[W >>> 3] | N[(W >>> 3) + 1] << 8 | N[(W >>> 3) + 2] << 16) >>> (W & 7);
    };
    H.H.i = function(N, W) {
      return (N[W >>> 3] | N[(W >>> 3) + 1] << 8 | N[(W >>> 3) + 2] << 16 | N[(W >>> 3) + 3] << 24) >>> (W & 7);
    };
    H.H.m = function() {
      var N = Uint16Array, W = Uint32Array;
      return {
        K: new N(16),
        j: new N(16),
        X: [16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15],
        S: [
          3,
          4,
          5,
          6,
          7,
          8,
          9,
          10,
          11,
          13,
          15,
          17,
          19,
          23,
          27,
          31,
          35,
          43,
          51,
          59,
          67,
          83,
          99,
          115,
          131,
          163,
          195,
          227,
          258,
          999,
          999,
          999
        ],
        T: [0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 0, 0, 0, 0],
        q: new N(32),
        p: [
          1,
          2,
          3,
          4,
          5,
          7,
          9,
          13,
          17,
          25,
          33,
          49,
          65,
          97,
          129,
          193,
          257,
          385,
          513,
          769,
          1025,
          1537,
          2049,
          3073,
          4097,
          6145,
          8193,
          12289,
          16385,
          24577,
          65535,
          65535
        ],
        z: [0, 0, 0, 0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 7, 7, 8, 8, 9, 9, 10, 10, 11, 11, 12, 12, 13, 13, 0, 0],
        c: new W(32),
        J: new N(512),
        _: [],
        h: new N(32),
        $: [],
        w: new N(32768),
        C: [],
        v: [],
        d: new N(32768),
        D: [],
        u: new N(512),
        Q: [],
        r: new N(1 << 15),
        s: new W(286),
        Y: new W(30),
        a: new W(19),
        t: new W(15e3),
        k: new N(1 << 16),
        g: new N(1 << 15)
      };
    }();
    (function() {
      var N = H.H.m, W = 1 << 15;
      for (var R = 0; R < W; R++) {
        var V = R;
        V = (V & 2863311530) >>> 1 | (V & 1431655765) << 1;
        V = (V & 3435973836) >>> 2 | (V & 858993459) << 2;
        V = (V & 4042322160) >>> 4 | (V & 252645135) << 4;
        V = (V & 4278255360) >>> 8 | (V & 16711935) << 8;
        N.r[R] = (V >>> 16 | V << 16) >>> 17;
      }
      function n(A, l, M) {
        while (l-- != 0)
          A.push(0, M);
      }
      for (var R = 0; R < 32; R++) {
        N.q[R] = N.S[R] << 3 | N.T[R];
        N.c[R] = N.p[R] << 4 | N.z[R];
      }
      n(N._, 144, 8);
      n(N._, 255 - 143, 9);
      n(N._, 279 - 255, 7);
      n(N._, 287 - 279, 8);
      H.H.n(N._, 9);
      H.H.A(N._, 9, N.J);
      H.H.l(N._, 9);
      n(N.$, 32, 5);
      H.H.n(N.$, 5);
      H.H.A(N.$, 5, N.h);
      H.H.l(N.$, 5);
      n(N.Q, 19, 0);
      n(N.C, 286, 0);
      n(N.D, 30, 0);
      n(N.v, 320, 0);
    })();
    return H.H.N;
  }();
  UPNG.decode._readInterlace = function(data, out) {
    var w = out.width, h = out.height;
    var bpp = UPNG.decode._getBPP(out), cbpp = bpp >> 3, bpl = Math.ceil(w * bpp / 8);
    var img = new Uint8Array(h * bpl);
    var di = 0;
    var starting_row = [0, 0, 4, 0, 2, 0, 1];
    var starting_col = [0, 4, 0, 2, 0, 1, 0];
    var row_increment = [8, 8, 8, 4, 4, 2, 2];
    var col_increment = [8, 8, 4, 4, 2, 2, 1];
    var pass = 0;
    while (pass < 7) {
      var ri = row_increment[pass], ci = col_increment[pass];
      var sw = 0, sh = 0;
      var cr = starting_row[pass];
      while (cr < h) {
        cr += ri;
        sh++;
      }
      var cc = starting_col[pass];
      while (cc < w) {
        cc += ci;
        sw++;
      }
      var bpll = Math.ceil(sw * bpp / 8);
      UPNG.decode._filterZero(data, out, di, sw, sh);
      var y = 0, row = starting_row[pass];
      var val;
      while (row < h) {
        var col = starting_col[pass];
        var cdi = di + y * bpll << 3;
        while (col < w) {
          if (bpp == 1) {
            val = data[cdi >> 3];
            val = val >> 7 - (cdi & 7) & 1;
            img[row * bpl + (col >> 3)] |= val << 7 - ((col & 7) << 0);
          }
          if (bpp == 2) {
            val = data[cdi >> 3];
            val = val >> 6 - (cdi & 7) & 3;
            img[row * bpl + (col >> 2)] |= val << 6 - ((col & 3) << 1);
          }
          if (bpp == 4) {
            val = data[cdi >> 3];
            val = val >> 4 - (cdi & 7) & 15;
            img[row * bpl + (col >> 1)] |= val << 4 - ((col & 1) << 2);
          }
          if (bpp >= 8) {
            var ii = row * bpl + col * cbpp;
            for (var j = 0; j < cbpp; j++)
              img[ii + j] = data[(cdi >> 3) + j];
          }
          cdi += bpp;
          col += ci;
        }
        y++;
        row += ri;
      }
      if (sw * sh != 0)
        di += sh * (1 + bpll);
      pass = pass + 1;
    }
    return img;
  };
  UPNG.decode._getBPP = function(out) {
    var noc = [1, null, 3, 1, 2, null, 4][out.ctype];
    return noc * out.depth;
  };
  UPNG.decode._filterZero = function(data, out, off, w, h) {
    var bpp = UPNG.decode._getBPP(out), bpl = Math.ceil(w * bpp / 8), paeth = UPNG.decode._paeth;
    bpp = Math.ceil(bpp / 8);
    var i, di, type = data[off], x = 0;
    if (type > 1)
      data[off] = [0, 0, 1][type - 2];
    if (type == 3)
      for (x = bpp; x < bpl; x++)
        data[x + 1] = data[x + 1] + (data[x + 1 - bpp] >>> 1) & 255;
    for (var y = 0; y < h; y++) {
      i = off + y * bpl;
      di = i + y + 1;
      type = data[di - 1];
      x = 0;
      if (type == 0) {
        for (; x < bpl; x++)
          data[i + x] = data[di + x];
      } else if (type == 1) {
        for (; x < bpp; x++)
          data[i + x] = data[di + x];
        for (; x < bpl; x++)
          data[i + x] = data[di + x] + data[i + x - bpp];
      } else if (type == 2) {
        for (; x < bpl; x++)
          data[i + x] = data[di + x] + data[i + x - bpl];
      } else if (type == 3) {
        for (; x < bpp; x++)
          data[i + x] = data[di + x] + (data[i + x - bpl] >>> 1);
        for (; x < bpl; x++)
          data[i + x] = data[di + x] + (data[i + x - bpl] + data[i + x - bpp] >>> 1);
      } else {
        for (; x < bpp; x++)
          data[i + x] = data[di + x] + paeth(0, data[i + x - bpl], 0);
        for (; x < bpl; x++) {
          data[i + x] = data[di + x] + paeth(data[i + x - bpp], data[i + x - bpl], data[i + x - bpp - bpl]);
        }
      }
    }
    return data;
  };
  UPNG.decode._paeth = function(a, b, c) {
    var p = a + b - c, pa = p - a, pb = p - b, pc = p - c;
    if (pa * pa <= pb * pb && pa * pa <= pc * pc)
      return a;
    else if (pb * pb <= pc * pc)
      return b;
    return c;
  };
  UPNG.decode._IHDR = function(data, offset, out) {
    var bin = UPNG._bin;
    out.width = bin.readUint(data, offset);
    offset += 4;
    out.height = bin.readUint(data, offset);
    offset += 4;
    out.depth = data[offset];
    offset++;
    out.ctype = data[offset];
    offset++;
    out.compress = data[offset];
    offset++;
    out.filter = data[offset];
    offset++;
    out.interlace = data[offset];
    offset++;
  };
  UPNG._bin = {
    nextZero: function(data, p) {
      while (data[p] != 0)
        p++;
      return p;
    },
    readUshort: function(buff, p) {
      return buff[p] << 8 | buff[p + 1];
    },
    writeUshort: function(buff, p, n) {
      buff[p] = n >> 8 & 255;
      buff[p + 1] = n & 255;
    },
    readUint: function(buff, p) {
      return buff[p] * (256 * 256 * 256) + (buff[p + 1] << 16 | buff[p + 2] << 8 | buff[p + 3]);
    },
    writeUint: function(buff, p, n) {
      buff[p] = n >> 24 & 255;
      buff[p + 1] = n >> 16 & 255;
      buff[p + 2] = n >> 8 & 255;
      buff[p + 3] = n & 255;
    },
    readASCII: function(buff, p, l) {
      var s = "";
      for (var i = 0; i < l; i++)
        s += String.fromCharCode(buff[p + i]);
      return s;
    },
    writeASCII: function(data, p, s) {
      for (var i = 0; i < s.length; i++)
        data[p + i] = s.charCodeAt(i);
    },
    readBytes: function(buff, p, l) {
      var arr = [];
      for (var i = 0; i < l; i++)
        arr.push(buff[p + i]);
      return arr;
    },
    pad: function(n) {
      return n.length < 2 ? "0" + n : n;
    },
    readUTF8: function(buff, p, l) {
      var s = "", ns;
      for (var i = 0; i < l; i++)
        s += "%" + UPNG._bin.pad(buff[p + i].toString(16));
      try {
        ns = decodeURIComponent(s);
      } catch (e) {
        return UPNG._bin.readASCII(buff, p, l);
      }
      return ns;
    }
  };
  UPNG._copyTile = function(sb, sw, sh, tb, tw, th, xoff, yoff, mode) {
    var w = Math.min(sw, tw), h = Math.min(sh, th);
    var si = 0, ti = 0;
    for (var y = 0; y < h; y++) {
      for (var x = 0; x < w; x++) {
        if (xoff >= 0 && yoff >= 0) {
          si = y * sw + x << 2;
          ti = (yoff + y) * tw + xoff + x << 2;
        } else {
          si = (-yoff + y) * sw - xoff + x << 2;
          ti = y * tw + x << 2;
        }
        if (mode == 0) {
          tb[ti] = sb[si];
          tb[ti + 1] = sb[si + 1];
          tb[ti + 2] = sb[si + 2];
          tb[ti + 3] = sb[si + 3];
        } else if (mode == 1) {
          var fa = sb[si + 3] * (1 / 255), fr = sb[si] * fa, fg = sb[si + 1] * fa, fb = sb[si + 2] * fa;
          var ba = tb[ti + 3] * (1 / 255), br = tb[ti] * ba, bg = tb[ti + 1] * ba, bb = tb[ti + 2] * ba;
          var ifa = 1 - fa, oa = fa + ba * ifa, ioa = oa == 0 ? 0 : 1 / oa;
          tb[ti + 3] = 255 * oa;
          tb[ti + 0] = (fr + br * ifa) * ioa;
          tb[ti + 1] = (fg + bg * ifa) * ioa;
          tb[ti + 2] = (fb + bb * ifa) * ioa;
        } else if (mode == 2) {
          var fa = sb[si + 3], fr = sb[si], fg = sb[si + 1], fb = sb[si + 2];
          var ba = tb[ti + 3], br = tb[ti], bg = tb[ti + 1], bb = tb[ti + 2];
          if (fa == ba && fr == br && fg == bg && fb == bb) {
            tb[ti] = 0;
            tb[ti + 1] = 0;
            tb[ti + 2] = 0;
            tb[ti + 3] = 0;
          } else {
            tb[ti] = fr;
            tb[ti + 1] = fg;
            tb[ti + 2] = fb;
            tb[ti + 3] = fa;
          }
        } else if (mode == 3) {
          var fa = sb[si + 3], fr = sb[si], fg = sb[si + 1], fb = sb[si + 2];
          var ba = tb[ti + 3], br = tb[ti], bg = tb[ti + 1], bb = tb[ti + 2];
          if (fa == ba && fr == br && fg == bg && fb == bb)
            continue;
          if (fa < 220 && ba > 20)
            return false;
        }
      }
    }
    return true;
  };
}
class RGBMLoader extends DataTextureLoader {
  constructor(manager) {
    super(manager);
    this.type = HalfFloatType;
    this.maxRange = 7;
  }
  setDataType(value) {
    this.type = value;
    return this;
  }
  setMaxRange(value) {
    this.maxRange = value;
    return this;
  }
  loadCubemap(urls, onLoad, onProgress, onError) {
    const texture = new CubeTexture();
    let loaded = 0;
    const scope = this;
    function loadTexture(i) {
      scope.load(
        urls[i],
        function(image) {
          texture.images[i] = image;
          loaded++;
          if (loaded === 6) {
            texture.needsUpdate = true;
            if (onLoad)
              onLoad(texture);
          }
        },
        void 0,
        onError
      );
    }
    for (let i = 0; i < urls.length; ++i) {
      loadTexture(i);
    }
    texture.type = this.type;
    texture.format = RGBAFormat;
    texture.minFilter = LinearFilter;
    texture.generateMipmaps = false;
    return texture;
  }
  parse(buffer) {
    init();
    const img = UPNG.decode(buffer);
    const rgba = UPNG.toRGBA8(img)[0];
    const data = new Uint8Array(rgba);
    const size = img.width * img.height * 4;
    const output = this.type === HalfFloatType ? new Uint16Array(size) : new Float32Array(size);
    for (let i = 0; i < data.length; i += 4) {
      const r = data[i + 0] / 255;
      const g = data[i + 1] / 255;
      const b = data[i + 2] / 255;
      const a = data[i + 3] / 255;
      if (this.type === HalfFloatType) {
        output[i + 0] = DataUtils.toHalfFloat(Math.min(r * a * this.maxRange, 65504));
        output[i + 1] = DataUtils.toHalfFloat(Math.min(g * a * this.maxRange, 65504));
        output[i + 2] = DataUtils.toHalfFloat(Math.min(b * a * this.maxRange, 65504));
        output[i + 3] = DataUtils.toHalfFloat(1);
      } else {
        output[i + 0] = r * a * this.maxRange;
        output[i + 1] = g * a * this.maxRange;
        output[i + 2] = b * a * this.maxRange;
        output[i + 3] = 1;
      }
    }
    return {
      width: img.width,
      height: img.height,
      data: output,
      format: RGBAFormat,
      type: this.type,
      flipY: true
    };
  }
}
export {
  RGBMLoader
};
//# sourceMappingURL=RGBMLoader.js.map
