three-stdlib
Version:
stand-alone library of threejs examples
1,006 lines (1,005 loc) • 31.1 kB
JavaScript
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