我一直在玩比特币矿工：https://github.com/derjanb/hamiyoca。经过对各地改变事物的反复试验，我终于能够运行基本的javascript和web worker实现。
当我注意到在脚本中根本没有调用函数 is_golden_hash 时，我决定测试WebGL挖掘器，但仍然是定义的。我并不太了解代码，因为我没有使用WebGL的经验，但很想知道它会去哪里。我认为它会出现在 201 或 213 的某个地方。任何人都可以帮我这个吗？
（glminer.js）：
var vShaderQuellcode;
var fShaderQuellcode;
var dataLoc;
var hash1Loc;
var midstateLoc;
var targetLoc;
var nonceLoc;
var maxNonce = 0xFFFFFFFF;
var maxCnt = 0;
var reportPeriod = 1000;
var useTimeout = true;
var TotalHashes = 0;
var gl;
var canvas;
var debug = false;
var buf;
var width;
var height;
function throwOnGLError(err, funcName, args) {
throw WebGLDebugUtils.glEnumToString(err) + " was caused by call to" + funcName;
};
function meinWebGLStart(threads) {
canvas = document.createElement('canvas');
if (debug || true) document.body.appendChild(canvas)
canvas.height = 1;
canvas.width = threads;
var names = [ "webgl", "experimental-webgl", "moz-webgl", "webkit-3d" ];
for (var i=0; i<names.length; i++) {
try {
gl = canvas.getContext(names[i]);
if (gl) { break; }
} catch (e) { }
}
if(!gl) {
alert("Fehler: WebGL-Context konnte nicht initialisiert werden");
}
var program = gl.createProgram();
vShader = gl.createShader(gl.VERTEX_SHADER);
gl.shaderSource(vShader,vShaderQuellcode);
gl.compileShader(vShader);
if (!gl.getShaderParameter(vShader, gl.COMPILE_STATUS)) {
console.log(gl.getShaderInfoLog(vShader));
}
gl.attachShader(program,vShader);
fShader = gl.createShader(gl.FRAGMENT_SHADER);
gl.shaderSource(fShader,fShaderQuellcode);
gl.compileShader(fShader);
if (!gl.getShaderParameter(fShader, gl.COMPILE_STATUS)) {
console.log(gl.getShaderInfoLog(fShader));
}
gl.attachShader(program,fShader);
gl.linkProgram(program);
gl.useProgram(program);
gl.clearColor ( 1.0, 1.0, 1.0, 1.0 );
gl.clear ( gl.COLOR_BUFFER_BIT );
var posAtrLoc = gl.getAttribLocation(program, "vPos");
gl.enableVertexAttribArray( posAtrLoc );
var h = [0x6a09, 0xe667, 0xbb67, 0xae85,
0x3c6e, 0xf372, 0xa54f, 0xf53a,
0x510e, 0x527f, 0x9b05, 0x688c,
0x1f83, 0xd9ab, 0x5be0, 0xcd19];
var k = [0x428a, 0x2f98, 0x7137, 0x4491,
0xb5c0, 0xfbcf, 0xe9b5, 0xdba5,
0x3956, 0xc25b, 0x59f1, 0x11f1,
0x923f, 0x82a4, 0xab1c, 0x5ed5,
0xd807, 0xaa98, 0x1283, 0x5b01,
0x2431, 0x85be, 0x550c, 0x7dc3,
0x72be, 0x5d74, 0x80de, 0xb1fe,
0x9bdc, 0x06a7, 0xc19b, 0xf174,
0xe49b, 0x69c1, 0xefbe, 0x4786,
0x0fc1, 0x9dc6, 0x240c, 0xa1cc,
0x2de9, 0x2c6f, 0x4a74, 0x84aa,
0x5cb0, 0xa9dc, 0x76f9, 0x88da,
0x983e, 0x5152, 0xa831, 0xc66d,
0xb003, 0x27c8, 0xbf59, 0x7fc7,
0xc6e0, 0x0bf3, 0xd5a7, 0x9147,
0x06ca, 0x6351, 0x1429, 0x2967,
0x27b7, 0x0a85, 0x2e1b, 0x2138,
0x4d2c, 0x6dfc, 0x5338, 0x0d13,
0x650a, 0x7354, 0x766a, 0x0abb,
0x81c2, 0xc92e, 0x9272, 0x2c85,
0xa2bf, 0xe8a1, 0xa81a, 0x664b,
0xc24b, 0x8b70, 0xc76c, 0x51a3,
0xd192, 0xe819, 0xd699, 0x0624,
0xf40e, 0x3585, 0x106a, 0xa070,
0x19a4, 0xc116, 0x1e37, 0x6c08,
0x2748, 0x774c, 0x34b0, 0xbcb5,
0x391c, 0x0cb3, 0x4ed8, 0xaa4a,
0x5b9c, 0xca4f, 0x682e, 0x6ff3,
0x748f, 0x82ee, 0x78a5, 0x636f,
0x84c8, 0x7814, 0x8cc7, 0x0208,
0x90be, 0xfffa, 0xa450, 0x6ceb,
0xbef9, 0xa3f7, 0xc671, 0x78f2];
gl.bindBuffer(gl.ARRAY_BUFFER, gl.createBuffer());
var vertices = new Float32Array([1, 1,-1, 1,
1,-1,-1,-1]);
gl.bufferData(gl.ARRAY_BUFFER, vertices, gl.STATIC_DRAW);
gl.vertexAttribPointer(posAtrLoc, 2, gl.FLOAT, false, 0, 0);
dataLoc = gl.getUniformLocation(program, "data");
hash1Loc = gl.getUniformLocation(program, "hash1");
midstateLoc = gl.getUniformLocation(program, "midstate");
targetLoc = gl.getUniformLocation(program, "target");
nonceLoc = gl.getUniformLocation(program, "nonce_base");
var hLoc = gl.getUniformLocation(program, "H");
var kLoc = gl.getUniformLocation(program, "K");
gl.uniform2fv(hLoc, h);
gl.uniform2fv(kLoc, k);
}
function readScript(n) {
var xhr = new XMLHttpRequest();
xhr.open("GET", n, false);
xhr.send(null);
var x = xhr.responseText;
return x;
};
function onl() {
vShaderQuellcode = readScript('shader-vs.js');
fShaderQuellcode = readScript('shader-fs.js');
};
function glminer(job, callback) {
var run = true;
var next_run = function(job, callback) {
var nonces_per_pixel = 1;
var t = job.t === undefined ? 0 : job.t;
var nonce = job.nonce === undefined ? 0 : job.nonce;
var threads = width * nonces_per_pixel;
var curCnt = 0;
var x = 0;
var y = 0;
var n;
var submit_nonce = function() {
n = derMiner.Util.to_uint16_array(job.nonce);
job.data[6] = n[0];
job.data[7] = n[1];
var r = [];
for (var j = 0; j < job.half.length; j++)
r.push(job.half[j]);
for (var j = 0; j < job.data.length; j++)
r.push(job.data[j]);
var ret = derMiner.Util.toPoolString(r, true);
job.golden_ticket = ret;
callback(job);
}
while(run) {
n = derMiner.Util.to_uint16_array(nonce);
gl.uniform2fv(nonceLoc, n);
gl.drawArrays(gl.TRIANGLE_STRIP, 0, 4);
if (debug) console.log("w:" + width + " h:" + height);
gl.readPixels(x, y, width, height, gl.RGBA, gl.UNSIGNED_BYTE, buf);
for (var i=0; i<buf.length; i+=4) {
if (debug) {
var out = [];
out.push(derMiner.Util.byte_to_hex(buf[i]));
out.push(derMiner.Util.byte_to_hex(buf[i+1]));
out.push(derMiner.Util.byte_to_hex(buf[i+2]));
out.push(derMiner.Util.byte_to_hex(buf[i+3]));
console.log("rgba("+(i/4)+"): " + JSON.stringify(out));
}
if (nonces_per_pixel == 1) {
if (buf[i] == 0 &&
buf[i+1] == 0 &&
buf[i+2] == 0 &&
buf[i+3] == 0) {
job.nonce = nonce + i * (nonces_per_pixel / 4);
submit_nonce();
}
} else {
if (buf[i] != 0 ||
buf[i+1] != 0 ||
buf[i+2] != 0 ||
buf[i+3] != 0) {
for (var e = 0; e < 4; e++) {
for (var r = 7; r >= 0; r--) {
if (buf[i + e] & 1 << r) {
var b = (3 - e) * (nonces_per_pixel / 4) + r;
job.nonce = nonce + i * (nonces_per_pixel / 4) + b;
submit_nonce();
}
}
}
job.golden_ticket = null;
}
}
}
if (nonce >= maxNonce) {
cb(null);
break;
}
nonce+= threads;
TotalHashes += threads;
if (t < (new Date()).getTime()) {
t = (new Date()).getTime() + reportPeriod;
job.total_hashes = TotalHashes;
callback(job);
TotalHashes = 0;
}
if (useTimeout && ++curCnt > maxCnt) {
curCnt = 0;
job.nonce = nonce;
job.t = t;
var c = function() {
next_run(job, callback);
}
window.setTimeout(c, 1);
return;
}
}
}
var intMessage = function(event) {
if (!event.data || !event.data.run) {
run = false;
console.log("worker: forced quit!");
return;
}
};
var mine = function(job, callback) {
gl.uniform2fv(dataLoc, job.data);
gl.uniform2fv(hash1Loc, job.hash1);
gl.uniform2fv(midstateLoc, job.midstate);
gl.uniform2fv(targetLoc, job.target);
width = canvas.width;
height = canvas.height;
buf = new Uint8Array(width * height * 4);
next_run(job, callback);
return intMessage;
}
var is_golden_hash = function(hash, target) {
var u1 = derMiner.Util.ToUInt32(hash);
var u2 = derMiner.Util.ToUInt32(target[6]);
console.log("worker: checking " + u1 + " <= " + u2);
return (u1 <= u2);
}
return mine(job, callback);
};
答案 0 :(得分：0)
从我看到的读取github上的代码，不使用或不需要此功能。它可能是一个旧的函数，它曾被使用过，从未从代码中删除，或者用于测试/调试以解决问题，如果它没有按预期工作。