gunslinger/examples/09_frame_buffer/bin/App.js

// The Module object: Our interface to the outside world. We import
// and export values on it. There are various ways Module can be used:
// 1. Not defined. We create it here
// 2. A function parameter, function(Module) { ..generated code.. }
// 3. pre-run appended it, var Module = {}; ..generated code..
// 4. External script tag defines var Module.
// We need to check if Module already exists (e.g. case 3 above).
// Substitution will be replaced with actual code on later stage of the build,
// this way Closure Compiler will not mangle it (e.g. case 4. above).
// Note that if you want to run closure, and also to use Module
// after the generated code, you will need to define   var Module = {};
// before the code. Then that object will be used in the code, and you
// can continue to use Module afterwards as well.
var Module = typeof Module !== 'undefined' ? Module : {};

// --pre-jses are emitted after the Module integration code, so that they can
// refer to Module (if they choose; they can also define Module)
// {{PRE_JSES}}

// Sometimes an existing Module object exists with properties
// meant to overwrite the default module functionality. Here
// we collect those properties and reapply _after_ we configure
// the current environment's defaults to avoid having to be so
// defensive during initialization.
var moduleOverrides = {};
var key;
for (key in Module) {
  if (Module.hasOwnProperty(key)) {
    moduleOverrides[key] = Module[key];
  }
}

var arguments_ = [];
var thisProgram = './this.program';
var quit_ = function(status, toThrow) {
  throw toThrow;
};

// Determine the runtime environment we are in. You can customize this by
// setting the ENVIRONMENT setting at compile time (see settings.js).

var ENVIRONMENT_IS_WEB = false;
var ENVIRONMENT_IS_WORKER = false;
var ENVIRONMENT_IS_NODE = false;
var ENVIRONMENT_IS_SHELL = false;
ENVIRONMENT_IS_WEB = typeof window === 'object';
ENVIRONMENT_IS_WORKER = typeof importScripts === 'function';
// N.b. Electron.js environment is simultaneously a NODE-environment, but
// also a web environment.
ENVIRONMENT_IS_NODE = typeof process === 'object' && typeof process.versions === 'object' && typeof process.versions.node === 'string';
ENVIRONMENT_IS_SHELL = !ENVIRONMENT_IS_WEB && !ENVIRONMENT_IS_NODE && !ENVIRONMENT_IS_WORKER;

// `/` should be present at the end if `scriptDirectory` is not empty
var scriptDirectory = '';
function locateFile(path) {
  if (Module['locateFile']) {
    return Module['locateFile'](path, scriptDirectory);
  }
  return scriptDirectory + path;
}

// Hooks that are implemented differently in different runtime environments.
var read_,
    readAsync,
    readBinary,
    setWindowTitle;

var nodeFS;
var nodePath;

if (ENVIRONMENT_IS_NODE) {
  if (ENVIRONMENT_IS_WORKER) {
    scriptDirectory = require('path').dirname(scriptDirectory) + '/';
  } else {
    scriptDirectory = __dirname + '/';
  }

// include: node_shell_read.js


read_ = function shell_read(filename, binary) {
  if (!nodeFS) nodeFS = require('fs');
  if (!nodePath) nodePath = require('path');
  filename = nodePath['normalize'](filename);
  return nodeFS['readFileSync'](filename, binary ? null : 'utf8');
};

readBinary = function readBinary(filename) {
  var ret = read_(filename, true);
  if (!ret.buffer) {
    ret = new Uint8Array(ret);
  }
  assert(ret.buffer);
  return ret;
};

// end include: node_shell_read.js
  if (process['argv'].length > 1) {
    thisProgram = process['argv'][1].replace(/\\/g, '/');
  }

  arguments_ = process['argv'].slice(2);

  if (typeof module !== 'undefined') {
    module['exports'] = Module;
  }

  process['on']('uncaughtException', function(ex) {
    // suppress ExitStatus exceptions from showing an error
    if (!(ex instanceof ExitStatus)) {
      throw ex;
    }
  });

  process['on']('unhandledRejection', abort);

  quit_ = function(status) {
    process['exit'](status);
  };

  Module['inspect'] = function () { return '[Emscripten Module object]'; };

} else
if (ENVIRONMENT_IS_SHELL) {

  if (typeof read != 'undefined') {
    read_ = function shell_read(f) {
      return read(f);
    };
  }

  readBinary = function readBinary(f) {
    var data;
    if (typeof readbuffer === 'function') {
      return new Uint8Array(readbuffer(f));
    }
    data = read(f, 'binary');
    assert(typeof data === 'object');
    return data;
  };

  if (typeof scriptArgs != 'undefined') {
    arguments_ = scriptArgs;
  } else if (typeof arguments != 'undefined') {
    arguments_ = arguments;
  }

  if (typeof quit === 'function') {
    quit_ = function(status) {
      quit(status);
    };
  }

  if (typeof print !== 'undefined') {
    // Prefer to use print/printErr where they exist, as they usually work better.
    if (typeof console === 'undefined') console = /** @type{!Console} */({});
    console.log = /** @type{!function(this:Console, ...*): undefined} */ (print);
    console.warn = console.error = /** @type{!function(this:Console, ...*): undefined} */ (typeof printErr !== 'undefined' ? printErr : print);
  }

} else

// Note that this includes Node.js workers when relevant (pthreads is enabled).
// Node.js workers are detected as a combination of ENVIRONMENT_IS_WORKER and
// ENVIRONMENT_IS_NODE.
if (ENVIRONMENT_IS_WEB || ENVIRONMENT_IS_WORKER) {
  if (ENVIRONMENT_IS_WORKER) { // Check worker, not web, since window could be polyfilled
    scriptDirectory = self.location.href;
  } else if (typeof document !== 'undefined' && document.currentScript) { // web
    scriptDirectory = document.currentScript.src;
  }
  // blob urls look like blob:http://site.com/etc/etc and we cannot infer anything from them.
  // otherwise, slice off the final part of the url to find the script directory.
  // if scriptDirectory does not contain a slash, lastIndexOf will return -1,
  // and scriptDirectory will correctly be replaced with an empty string.
  if (scriptDirectory.indexOf('blob:') !== 0) {
    scriptDirectory = scriptDirectory.substr(0, scriptDirectory.lastIndexOf('/')+1);
  } else {
    scriptDirectory = '';
  }

  // Differentiate the Web Worker from the Node Worker case, as reading must
  // be done differently.
  {

// include: web_or_worker_shell_read.js


  read_ = function(url) {
      var xhr = new XMLHttpRequest();
      xhr.open('GET', url, false);
      xhr.send(null);
      return xhr.responseText;
  };

  if (ENVIRONMENT_IS_WORKER) {
    readBinary = function(url) {
        var xhr = new XMLHttpRequest();
        xhr.open('GET', url, false);
        xhr.responseType = 'arraybuffer';
        xhr.send(null);
        return new Uint8Array(/** @type{!ArrayBuffer} */(xhr.response));
    };
  }

  readAsync = function(url, onload, onerror) {
    var xhr = new XMLHttpRequest();
    xhr.open('GET', url, true);
    xhr.responseType = 'arraybuffer';
    xhr.onload = function() {
      if (xhr.status == 200 || (xhr.status == 0 && xhr.response)) { // file URLs can return 0
        onload(xhr.response);
        return;
      }
      onerror();
    };
    xhr.onerror = onerror;
    xhr.send(null);
  };

// end include: web_or_worker_shell_read.js
  }

  setWindowTitle = function(title) { document.title = title };
} else
{
}

// Set up the out() and err() hooks, which are how we can print to stdout or
// stderr, respectively.
var out = Module['print'] || console.log.bind(console);
var err = Module['printErr'] || console.warn.bind(console);

// Merge back in the overrides
for (key in moduleOverrides) {
  if (moduleOverrides.hasOwnProperty(key)) {
    Module[key] = moduleOverrides[key];
  }
}
// Free the object hierarchy contained in the overrides, this lets the GC
// reclaim data used e.g. in memoryInitializerRequest, which is a large typed array.
moduleOverrides = null;

// Emit code to handle expected values on the Module object. This applies Module.x
// to the proper local x. This has two benefits: first, we only emit it if it is
// expected to arrive, and second, by using a local everywhere else that can be
// minified.
if (Module['arguments']) arguments_ = Module['arguments'];
if (Module['thisProgram']) thisProgram = Module['thisProgram'];
if (Module['quit']) quit_ = Module['quit'];

// perform assertions in shell.js after we set up out() and err(), as otherwise if an assertion fails it cannot print the message




var STACK_ALIGN = 16;

function alignMemory(size, factor) {
  if (!factor) factor = STACK_ALIGN; // stack alignment (16-byte) by default
  return Math.ceil(size / factor) * factor;
}

function getNativeTypeSize(type) {
  switch (type) {
    case 'i1': case 'i8': return 1;
    case 'i16': return 2;
    case 'i32': return 4;
    case 'i64': return 8;
    case 'float': return 4;
    case 'double': return 8;
    default: {
      if (type[type.length-1] === '*') {
        return 4; // A pointer
      } else if (type[0] === 'i') {
        var bits = Number(type.substr(1));
        assert(bits % 8 === 0, 'getNativeTypeSize invalid bits ' + bits + ', type ' + type);
        return bits / 8;
      } else {
        return 0;
      }
    }
  }
}

function warnOnce(text) {
  if (!warnOnce.shown) warnOnce.shown = {};
  if (!warnOnce.shown[text]) {
    warnOnce.shown[text] = 1;
    err(text);
  }
}

// include: runtime_functions.js


// Wraps a JS function as a wasm function with a given signature.
function convertJsFunctionToWasm(func, sig) {

  // If the type reflection proposal is available, use the new
  // "WebAssembly.Function" constructor.
  // Otherwise, construct a minimal wasm module importing the JS function and
  // re-exporting it.
  if (typeof WebAssembly.Function === "function") {
    var typeNames = {
      'i': 'i32',
      'j': 'i64',
      'f': 'f32',
      'd': 'f64'
    };
    var type = {
      parameters: [],
      results: sig[0] == 'v' ? [] : [typeNames[sig[0]]]
    };
    for (var i = 1; i < sig.length; ++i) {
      type.parameters.push(typeNames[sig[i]]);
    }
    return new WebAssembly.Function(type, func);
  }

  // The module is static, with the exception of the type section, which is
  // generated based on the signature passed in.
  var typeSection = [
    0x01, // id: section,
    0x00, // length: 0 (placeholder)
    0x01, // count: 1
    0x60, // form: func
  ];
  var sigRet = sig.slice(0, 1);
  var sigParam = sig.slice(1);
  var typeCodes = {
    'i': 0x7f, // i32
    'j': 0x7e, // i64
    'f': 0x7d, // f32
    'd': 0x7c, // f64
  };

  // Parameters, length + signatures
  typeSection.push(sigParam.length);
  for (var i = 0; i < sigParam.length; ++i) {
    typeSection.push(typeCodes[sigParam[i]]);
  }

  // Return values, length + signatures
  // With no multi-return in MVP, either 0 (void) or 1 (anything else)
  if (sigRet == 'v') {
    typeSection.push(0x00);
  } else {
    typeSection = typeSection.concat([0x01, typeCodes[sigRet]]);
  }

  // Write the overall length of the type section back into the section header
  // (excepting the 2 bytes for the section id and length)
  typeSection[1] = typeSection.length - 2;

  // Rest of the module is static
  var bytes = new Uint8Array([
    0x00, 0x61, 0x73, 0x6d, // magic ("\0asm")
    0x01, 0x00, 0x00, 0x00, // version: 1
  ].concat(typeSection, [
    0x02, 0x07, // import section
      // (import "e" "f" (func 0 (type 0)))
      0x01, 0x01, 0x65, 0x01, 0x66, 0x00, 0x00,
    0x07, 0x05, // export section
      // (export "f" (func 0 (type 0)))
      0x01, 0x01, 0x66, 0x00, 0x00,
  ]));

   // We can compile this wasm module synchronously because it is very small.
  // This accepts an import (at "e.f"), that it reroutes to an export (at "f")
  var module = new WebAssembly.Module(bytes);
  var instance = new WebAssembly.Instance(module, {
    'e': {
      'f': func
    }
  });
  var wrappedFunc = instance.exports['f'];
  return wrappedFunc;
}

var freeTableIndexes = [];

// Weak map of functions in the table to their indexes, created on first use.
var functionsInTableMap;

function getEmptyTableSlot() {
  // Reuse a free index if there is one, otherwise grow.
  if (freeTableIndexes.length) {
    return freeTableIndexes.pop();
  }
  // Grow the table
  try {
    wasmTable.grow(1);
  } catch (err) {
    if (!(err instanceof RangeError)) {
      throw err;
    }
    throw 'Unable to grow wasm table. Set ALLOW_TABLE_GROWTH.';
  }
  return wasmTable.length - 1;
}

// Add a wasm function to the table.
function addFunctionWasm(func, sig) {
  // Check if the function is already in the table, to ensure each function
  // gets a unique index. First, create the map if this is the first use.
  if (!functionsInTableMap) {
    functionsInTableMap = new WeakMap();
    for (var i = 0; i < wasmTable.length; i++) {
      var item = wasmTable.get(i);
      // Ignore null values.
      if (item) {
        functionsInTableMap.set(item, i);
      }
    }
  }
  if (functionsInTableMap.has(func)) {
    return functionsInTableMap.get(func);
  }

  // It's not in the table, add it now.

  var ret = getEmptyTableSlot();

  // Set the new value.
  try {
    // Attempting to call this with JS function will cause of table.set() to fail
    wasmTable.set(ret, func);
  } catch (err) {
    if (!(err instanceof TypeError)) {
      throw err;
    }
    var wrapped = convertJsFunctionToWasm(func, sig);
    wasmTable.set(ret, wrapped);
  }

  functionsInTableMap.set(func, ret);

  return ret;
}

function removeFunction(index) {
  functionsInTableMap.delete(wasmTable.get(index));
  freeTableIndexes.push(index);
}

// 'sig' parameter is required for the llvm backend but only when func is not
// already a WebAssembly function.
function addFunction(func, sig) {

  return addFunctionWasm(func, sig);
}

// end include: runtime_functions.js
// include: runtime_debug.js


// end include: runtime_debug.js
function makeBigInt(low, high, unsigned) {
  return unsigned ? ((+((low>>>0)))+((+((high>>>0)))*4294967296.0)) : ((+((low>>>0)))+((+((high|0)))*4294967296.0));
}

var tempRet0 = 0;

var setTempRet0 = function(value) {
  tempRet0 = value;
};

var getTempRet0 = function() {
  return tempRet0;
};



// === Preamble library stuff ===

// Documentation for the public APIs defined in this file must be updated in:
//    site/source/docs/api_reference/preamble.js.rst
// A prebuilt local version of the documentation is available at:
//    site/build/text/docs/api_reference/preamble.js.txt
// You can also build docs locally as HTML or other formats in site/
// An online HTML version (which may be of a different version of Emscripten)
//    is up at http://kripken.github.io/emscripten-site/docs/api_reference/preamble.js.html

var wasmBinary;if (Module['wasmBinary']) wasmBinary = Module['wasmBinary'];
var noExitRuntime;if (Module['noExitRuntime']) noExitRuntime = Module['noExitRuntime'];

if (typeof WebAssembly !== 'object') {
  abort('no native wasm support detected');
}

// include: runtime_safe_heap.js


// In MINIMAL_RUNTIME, setValue() and getValue() are only available when building with safe heap enabled, for heap safety checking.
// In traditional runtime, setValue() and getValue() are always available (although their use is highly discouraged due to perf penalties)

/** @param {number} ptr
    @param {number} value
    @param {string} type
    @param {number|boolean=} noSafe */
function setValue(ptr, value, type, noSafe) {
  type = type || 'i8';
  if (type.charAt(type.length-1) === '*') type = 'i32'; // pointers are 32-bit
    switch(type) {
      case 'i1': HEAP8[((ptr)>>0)] = value; break;
      case 'i8': HEAP8[((ptr)>>0)] = value; break;
      case 'i16': HEAP16[((ptr)>>1)] = value; break;
      case 'i32': HEAP32[((ptr)>>2)] = value; break;
      case 'i64': (tempI64 = [value>>>0,(tempDouble=value,(+(Math.abs(tempDouble))) >= 1.0 ? (tempDouble > 0.0 ? ((Math.min((+(Math.floor((tempDouble)/4294967296.0))), 4294967295.0))|0)>>>0 : (~~((+(Math.ceil((tempDouble - +(((~~(tempDouble)))>>>0))/4294967296.0)))))>>>0) : 0)],HEAP32[((ptr)>>2)] = tempI64[0],HEAP32[(((ptr)+(4))>>2)] = tempI64[1]); break;
      case 'float': HEAPF32[((ptr)>>2)] = value; break;
      case 'double': HEAPF64[((ptr)>>3)] = value; break;
      default: abort('invalid type for setValue: ' + type);
    }
}

/** @param {number} ptr
    @param {string} type
    @param {number|boolean=} noSafe */
function getValue(ptr, type, noSafe) {
  type = type || 'i8';
  if (type.charAt(type.length-1) === '*') type = 'i32'; // pointers are 32-bit
    switch(type) {
      case 'i1': return HEAP8[((ptr)>>0)];
      case 'i8': return HEAP8[((ptr)>>0)];
      case 'i16': return HEAP16[((ptr)>>1)];
      case 'i32': return HEAP32[((ptr)>>2)];
      case 'i64': return HEAP32[((ptr)>>2)];
      case 'float': return HEAPF32[((ptr)>>2)];
      case 'double': return HEAPF64[((ptr)>>3)];
      default: abort('invalid type for getValue: ' + type);
    }
  return null;
}

// end include: runtime_safe_heap.js
// Wasm globals

var wasmMemory;

//========================================
// Runtime essentials
//========================================

// whether we are quitting the application. no code should run after this.
// set in exit() and abort()
var ABORT = false;

// set by exit() and abort().  Passed to 'onExit' handler.
// NOTE: This is also used as the process return code code in shell environments
// but only when noExitRuntime is false.
var EXITSTATUS;

/** @type {function(*, string=)} */
function assert(condition, text) {
  if (!condition) {
    abort('Assertion failed: ' + text);
  }
}

// Returns the C function with a specified identifier (for C++, you need to do manual name mangling)
function getCFunc(ident) {
  var func = Module['_' + ident]; // closure exported function
  assert(func, 'Cannot call unknown function ' + ident + ', make sure it is exported');
  return func;
}

// C calling interface.
/** @param {string|null=} returnType
    @param {Array=} argTypes
    @param {Arguments|Array=} args
    @param {Object=} opts */
function ccall(ident, returnType, argTypes, args, opts) {
  // For fast lookup of conversion functions
  var toC = {
    'string': function(str) {
      var ret = 0;
      if (str !== null && str !== undefined && str !== 0) { // null string
        // at most 4 bytes per UTF-8 code point, +1 for the trailing '\0'
        var len = (str.length << 2) + 1;
        ret = stackAlloc(len);
        stringToUTF8(str, ret, len);
      }
      return ret;
    },
    'array': function(arr) {
      var ret = stackAlloc(arr.length);
      writeArrayToMemory(arr, ret);
      return ret;
    }
  };

  function convertReturnValue(ret) {
    if (returnType === 'string') return UTF8ToString(ret);
    if (returnType === 'boolean') return Boolean(ret);
    return ret;
  }

  var func = getCFunc(ident);
  var cArgs = [];
  var stack = 0;
  if (args) {
    for (var i = 0; i < args.length; i++) {
      var converter = toC[argTypes[i]];
      if (converter) {
        if (stack === 0) stack = stackSave();
        cArgs[i] = converter(args[i]);
      } else {
        cArgs[i] = args[i];
      }
    }
  }
  var ret = func.apply(null, cArgs);
  var asyncMode = opts && opts.async;
  var runningAsync = typeof Asyncify === 'object' && Asyncify.currData;
  var prevRunningAsync = typeof Asyncify === 'object' && Asyncify.asyncFinalizers.length > 0;
  // Check if we started an async operation just now.
  if (runningAsync && !prevRunningAsync) {
    // If so, the WASM function ran asynchronous and unwound its stack.
    // We need to return a Promise that resolves the return value
    // once the stack is rewound and execution finishes.
    return new Promise(function(resolve) {
      Asyncify.asyncFinalizers.push(function(ret) {
        if (stack !== 0) stackRestore(stack);
        resolve(convertReturnValue(ret));
      });
    });
  }

  ret = convertReturnValue(ret);
  if (stack !== 0) stackRestore(stack);
  // If this is an async ccall, ensure we return a promise
  if (opts && opts.async) return Promise.resolve(ret);
  return ret;
}

/** @param {string=} returnType
    @param {Array=} argTypes
    @param {Object=} opts */
function cwrap(ident, returnType, argTypes, opts) {
  argTypes = argTypes || [];
  // When the function takes numbers and returns a number, we can just return
  // the original function
  var numericArgs = argTypes.every(function(type){ return type === 'number'});
  var numericRet = returnType !== 'string';
  if (numericRet && numericArgs && !opts) {
    return getCFunc(ident);
  }
  return function() {
    return ccall(ident, returnType, argTypes, arguments, opts);
  }
}

var ALLOC_NORMAL = 0; // Tries to use _malloc()
var ALLOC_STACK = 1; // Lives for the duration of the current function call

// allocate(): This is for internal use. You can use it yourself as well, but the interface
//             is a little tricky (see docs right below). The reason is that it is optimized
//             for multiple syntaxes to save space in generated code. So you should
//             normally not use allocate(), and instead allocate memory using _malloc(),
//             initialize it with setValue(), and so forth.
// @slab: An array of data.
// @allocator: How to allocate memory, see ALLOC_*
/** @type {function((Uint8Array|Array<number>), number)} */
function allocate(slab, allocator) {
  var ret;

  if (allocator == ALLOC_STACK) {
    ret = stackAlloc(slab.length);
  } else {
    ret = _malloc(slab.length);
  }

  if (slab.subarray || slab.slice) {
    HEAPU8.set(/** @type {!Uint8Array} */(slab), ret);
  } else {
    HEAPU8.set(new Uint8Array(slab), ret);
  }
  return ret;
}

// include: runtime_strings.js


// runtime_strings.js: Strings related runtime functions that are part of both MINIMAL_RUNTIME and regular runtime.

// Given a pointer 'ptr' to a null-terminated UTF8-encoded string in the given array that contains uint8 values, returns
// a copy of that string as a Javascript String object.

var UTF8Decoder = typeof TextDecoder !== 'undefined' ? new TextDecoder('utf8') : undefined;

/**
 * @param {number} idx
 * @param {number=} maxBytesToRead
 * @return {string}
 */
function UTF8ArrayToString(heap, idx, maxBytesToRead) {
  var endIdx = idx + maxBytesToRead;
  var endPtr = idx;
  // TextDecoder needs to know the byte length in advance, it doesn't stop on null terminator by itself.
  // Also, use the length info to avoid running tiny strings through TextDecoder, since .subarray() allocates garbage.
  // (As a tiny code save trick, compare endPtr against endIdx using a negation, so that undefined means Infinity)
  while (heap[endPtr] && !(endPtr >= endIdx)) ++endPtr;

  if (endPtr - idx > 16 && heap.subarray && UTF8Decoder) {
    return UTF8Decoder.decode(heap.subarray(idx, endPtr));
  } else {
    var str = '';
    // If building with TextDecoder, we have already computed the string length above, so test loop end condition against that
    while (idx < endPtr) {
      // For UTF8 byte structure, see:
      // http://en.wikipedia.org/wiki/UTF-8#Description
      // https://www.ietf.org/rfc/rfc2279.txt
      // https://tools.ietf.org/html/rfc3629
      var u0 = heap[idx++];
      if (!(u0 & 0x80)) { str += String.fromCharCode(u0); continue; }
      var u1 = heap[idx++] & 63;
      if ((u0 & 0xE0) == 0xC0) { str += String.fromCharCode(((u0 & 31) << 6) | u1); continue; }
      var u2 = heap[idx++] & 63;
      if ((u0 & 0xF0) == 0xE0) {
        u0 = ((u0 & 15) << 12) | (u1 << 6) | u2;
      } else {
        u0 = ((u0 & 7) << 18) | (u1 << 12) | (u2 << 6) | (heap[idx++] & 63);
      }

      if (u0 < 0x10000) {
        str += String.fromCharCode(u0);
      } else {
        var ch = u0 - 0x10000;
        str += String.fromCharCode(0xD800 | (ch >> 10), 0xDC00 | (ch & 0x3FF));
      }
    }
  }
  return str;
}

// Given a pointer 'ptr' to a null-terminated UTF8-encoded string in the emscripten HEAP, returns a
// copy of that string as a Javascript String object.
// maxBytesToRead: an optional length that specifies the maximum number of bytes to read. You can omit
//                 this parameter to scan the string until the first \0 byte. If maxBytesToRead is
//                 passed, and the string at [ptr, ptr+maxBytesToReadr[ contains a null byte in the
//                 middle, then the string will cut short at that byte index (i.e. maxBytesToRead will
//                 not produce a string of exact length [ptr, ptr+maxBytesToRead[)
//                 N.B. mixing frequent uses of UTF8ToString() with and without maxBytesToRead may
//                 throw JS JIT optimizations off, so it is worth to consider consistently using one
//                 style or the other.
/**
 * @param {number} ptr
 * @param {number=} maxBytesToRead
 * @return {string}
 */
function UTF8ToString(ptr, maxBytesToRead) {
  return ptr ? UTF8ArrayToString(HEAPU8, ptr, maxBytesToRead) : '';
}

// Copies the given Javascript String object 'str' to the given byte array at address 'outIdx',
// encoded in UTF8 form and null-terminated. The copy will require at most str.length*4+1 bytes of space in the HEAP.
// Use the function lengthBytesUTF8 to compute the exact number of bytes (excluding null terminator) that this function will write.
// Parameters:
//   str: the Javascript string to copy.
//   heap: the array to copy to. Each index in this array is assumed to be one 8-byte element.
//   outIdx: The starting offset in the array to begin the copying.
//   maxBytesToWrite: The maximum number of bytes this function can write to the array.
//                    This count should include the null terminator,
//                    i.e. if maxBytesToWrite=1, only the null terminator will be written and nothing else.
//                    maxBytesToWrite=0 does not write any bytes to the output, not even the null terminator.
// Returns the number of bytes written, EXCLUDING the null terminator.

function stringToUTF8Array(str, heap, outIdx, maxBytesToWrite) {
  if (!(maxBytesToWrite > 0)) // Parameter maxBytesToWrite is not optional. Negative values, 0, null, undefined and false each don't write out any bytes.
    return 0;

  var startIdx = outIdx;
  var endIdx = outIdx + maxBytesToWrite - 1; // -1 for string null terminator.
  for (var i = 0; i < str.length; ++i) {
    // Gotcha: charCodeAt returns a 16-bit word that is a UTF-16 encoded code unit, not a Unicode code point of the character! So decode UTF16->UTF32->UTF8.
    // See http://unicode.org/faq/utf_bom.html#utf16-3
    // For UTF8 byte structure, see http://en.wikipedia.org/wiki/UTF-8#Description and https://www.ietf.org/rfc/rfc2279.txt and https://tools.ietf.org/html/rfc3629
    var u = str.charCodeAt(i); // possibly a lead surrogate
    if (u >= 0xD800 && u <= 0xDFFF) {
      var u1 = str.charCodeAt(++i);
      u = 0x10000 + ((u & 0x3FF) << 10) | (u1 & 0x3FF);
    }
    if (u <= 0x7F) {
      if (outIdx >= endIdx) break;
      heap[outIdx++] = u;
    } else if (u <= 0x7FF) {
      if (outIdx + 1 >= endIdx) break;
      heap[outIdx++] = 0xC0 | (u >> 6);
      heap[outIdx++] = 0x80 | (u & 63);
    } else if (u <= 0xFFFF) {
      if (outIdx + 2 >= endIdx) break;
      heap[outIdx++] = 0xE0 | (u >> 12);
      heap[outIdx++] = 0x80 | ((u >> 6) & 63);
      heap[outIdx++] = 0x80 | (u & 63);
    } else {
      if (outIdx + 3 >= endIdx) break;
      heap[outIdx++] = 0xF0 | (u >> 18);
      heap[outIdx++] = 0x80 | ((u >> 12) & 63);
      heap[outIdx++] = 0x80 | ((u >> 6) & 63);
      heap[outIdx++] = 0x80 | (u & 63);
    }
  }
  // Null-terminate the pointer to the buffer.
  heap[outIdx] = 0;
  return outIdx - startIdx;
}

// Copies the given Javascript String object 'str' to the emscripten HEAP at address 'outPtr',
// null-terminated and encoded in UTF8 form. The copy will require at most str.length*4+1 bytes of space in the HEAP.
// Use the function lengthBytesUTF8 to compute the exact number of bytes (excluding null terminator) that this function will write.
// Returns the number of bytes written, EXCLUDING the null terminator.

function stringToUTF8(str, outPtr, maxBytesToWrite) {
  return stringToUTF8Array(str, HEAPU8,outPtr, maxBytesToWrite);
}

// Returns the number of bytes the given Javascript string takes if encoded as a UTF8 byte array, EXCLUDING the null terminator byte.
function lengthBytesUTF8(str) {
  var len = 0;
  for (var i = 0; i < str.length; ++i) {
    // Gotcha: charCodeAt returns a 16-bit word that is a UTF-16 encoded code unit, not a Unicode code point of the character! So decode UTF16->UTF32->UTF8.
    // See http://unicode.org/faq/utf_bom.html#utf16-3
    var u = str.charCodeAt(i); // possibly a lead surrogate
    if (u >= 0xD800 && u <= 0xDFFF) u = 0x10000 + ((u & 0x3FF) << 10) | (str.charCodeAt(++i) & 0x3FF);
    if (u <= 0x7F) ++len;
    else if (u <= 0x7FF) len += 2;
    else if (u <= 0xFFFF) len += 3;
    else len += 4;
  }
  return len;
}

// end include: runtime_strings.js
// include: runtime_strings_extra.js


// runtime_strings_extra.js: Strings related runtime functions that are available only in regular runtime.

// Given a pointer 'ptr' to a null-terminated ASCII-encoded string in the emscripten HEAP, returns
// a copy of that string as a Javascript String object.

function AsciiToString(ptr) {
  var str = '';
  while (1) {
    var ch = HEAPU8[((ptr++)>>0)];
    if (!ch) return str;
    str += String.fromCharCode(ch);
  }
}

// Copies the given Javascript String object 'str' to the emscripten HEAP at address 'outPtr',
// null-terminated and encoded in ASCII form. The copy will require at most str.length+1 bytes of space in the HEAP.

function stringToAscii(str, outPtr) {
  return writeAsciiToMemory(str, outPtr, false);
}

// Given a pointer 'ptr' to a null-terminated UTF16LE-encoded string in the emscripten HEAP, returns
// a copy of that string as a Javascript String object.

var UTF16Decoder = typeof TextDecoder !== 'undefined' ? new TextDecoder('utf-16le') : undefined;

function UTF16ToString(ptr, maxBytesToRead) {
  var endPtr = ptr;
  // TextDecoder needs to know the byte length in advance, it doesn't stop on null terminator by itself.
  // Also, use the length info to avoid running tiny strings through TextDecoder, since .subarray() allocates garbage.
  var idx = endPtr >> 1;
  var maxIdx = idx + maxBytesToRead / 2;
  // If maxBytesToRead is not passed explicitly, it will be undefined, and this
  // will always evaluate to true. This saves on code size.
  while (!(idx >= maxIdx) && HEAPU16[idx]) ++idx;
  endPtr = idx << 1;

  if (endPtr - ptr > 32 && UTF16Decoder) {
    return UTF16Decoder.decode(HEAPU8.subarray(ptr, endPtr));
  } else {
    var str = '';

    // If maxBytesToRead is not passed explicitly, it will be undefined, and the for-loop's condition
    // will always evaluate to true. The loop is then terminated on the first null char.
    for (var i = 0; !(i >= maxBytesToRead / 2); ++i) {
      var codeUnit = HEAP16[(((ptr)+(i*2))>>1)];
      if (codeUnit == 0) break;
      // fromCharCode constructs a character from a UTF-16 code unit, so we can pass the UTF16 string right through.
      str += String.fromCharCode(codeUnit);
    }

    return str;
  }
}

// Copies the given Javascript String object 'str' to the emscripten HEAP at address 'outPtr',
// null-terminated and encoded in UTF16 form. The copy will require at most str.length*4+2 bytes of space in the HEAP.
// Use the function lengthBytesUTF16() to compute the exact number of bytes (excluding null terminator) that this function will write.
// Parameters:
//   str: the Javascript string to copy.
//   outPtr: Byte address in Emscripten HEAP where to write the string to.
//   maxBytesToWrite: The maximum number of bytes this function can write to the array. This count should include the null
//                    terminator, i.e. if maxBytesToWrite=2, only the null terminator will be written and nothing else.
//                    maxBytesToWrite<2 does not write any bytes to the output, not even the null terminator.
// Returns the number of bytes written, EXCLUDING the null terminator.

function stringToUTF16(str, outPtr, maxBytesToWrite) {
  // Backwards compatibility: if max bytes is not specified, assume unsafe unbounded write is allowed.
  if (maxBytesToWrite === undefined) {
    maxBytesToWrite = 0x7FFFFFFF;
  }
  if (maxBytesToWrite < 2) return 0;
  maxBytesToWrite -= 2; // Null terminator.
  var startPtr = outPtr;
  var numCharsToWrite = (maxBytesToWrite < str.length*2) ? (maxBytesToWrite / 2) : str.length;
  for (var i = 0; i < numCharsToWrite; ++i) {
    // charCodeAt returns a UTF-16 encoded code unit, so it can be directly written to the HEAP.
    var codeUnit = str.charCodeAt(i); // possibly a lead surrogate
    HEAP16[((outPtr)>>1)] = codeUnit;
    outPtr += 2;
  }
  // Null-terminate the pointer to the HEAP.
  HEAP16[((outPtr)>>1)] = 0;
  return outPtr - startPtr;
}

// Returns the number of bytes the given Javascript string takes if encoded as a UTF16 byte array, EXCLUDING the null terminator byte.

function lengthBytesUTF16(str) {
  return str.length*2;
}

function UTF32ToString(ptr, maxBytesToRead) {
  var i = 0;

  var str = '';
  // If maxBytesToRead is not passed explicitly, it will be undefined, and this
  // will always evaluate to true. This saves on code size.
  while (!(i >= maxBytesToRead / 4)) {
    var utf32 = HEAP32[(((ptr)+(i*4))>>2)];
    if (utf32 == 0) break;
    ++i;
    // Gotcha: fromCharCode constructs a character from a UTF-16 encoded code (pair), not from a Unicode code point! So encode the code point to UTF-16 for constructing.
    // See http://unicode.org/faq/utf_bom.html#utf16-3
    if (utf32 >= 0x10000) {
      var ch = utf32 - 0x10000;
      str += String.fromCharCode(0xD800 | (ch >> 10), 0xDC00 | (ch & 0x3FF));
    } else {
      str += String.fromCharCode(utf32);
    }
  }
  return str;
}

// Copies the given Javascript String object 'str' to the emscripten HEAP at address 'outPtr',
// null-terminated and encoded in UTF32 form. The copy will require at most str.length*4+4 bytes of space in the HEAP.
// Use the function lengthBytesUTF32() to compute the exact number of bytes (excluding null terminator) that this function will write.
// Parameters:
//   str: the Javascript string to copy.
//   outPtr: Byte address in Emscripten HEAP where to write the string to.
//   maxBytesToWrite: The maximum number of bytes this function can write to the array. This count should include the null
//                    terminator, i.e. if maxBytesToWrite=4, only the null terminator will be written and nothing else.
//                    maxBytesToWrite<4 does not write any bytes to the output, not even the null terminator.
// Returns the number of bytes written, EXCLUDING the null terminator.

function stringToUTF32(str, outPtr, maxBytesToWrite) {
  // Backwards compatibility: if max bytes is not specified, assume unsafe unbounded write is allowed.
  if (maxBytesToWrite === undefined) {
    maxBytesToWrite = 0x7FFFFFFF;
  }
  if (maxBytesToWrite < 4) return 0;
  var startPtr = outPtr;
  var endPtr = startPtr + maxBytesToWrite - 4;
  for (var i = 0; i < str.length; ++i) {
    // Gotcha: charCodeAt returns a 16-bit word that is a UTF-16 encoded code unit, not a Unicode code point of the character! We must decode the string to UTF-32 to the heap.
    // See http://unicode.org/faq/utf_bom.html#utf16-3
    var codeUnit = str.charCodeAt(i); // possibly a lead surrogate
    if (codeUnit >= 0xD800 && codeUnit <= 0xDFFF) {
      var trailSurrogate = str.charCodeAt(++i);
      codeUnit = 0x10000 + ((codeUnit & 0x3FF) << 10) | (trailSurrogate & 0x3FF);
    }
    HEAP32[((outPtr)>>2)] = codeUnit;
    outPtr += 4;
    if (outPtr + 4 > endPtr) break;
  }
  // Null-terminate the pointer to the HEAP.
  HEAP32[((outPtr)>>2)] = 0;
  return outPtr - startPtr;
}

// Returns the number of bytes the given Javascript string takes if encoded as a UTF16 byte array, EXCLUDING the null terminator byte.

function lengthBytesUTF32(str) {
  var len = 0;
  for (var i = 0; i < str.length; ++i) {
    // Gotcha: charCodeAt returns a 16-bit word that is a UTF-16 encoded code unit, not a Unicode code point of the character! We must decode the string to UTF-32 to the heap.
    // See http://unicode.org/faq/utf_bom.html#utf16-3
    var codeUnit = str.charCodeAt(i);
    if (codeUnit >= 0xD800 && codeUnit <= 0xDFFF) ++i; // possibly a lead surrogate, so skip over the tail surrogate.
    len += 4;
  }

  return len;
}

// Allocate heap space for a JS string, and write it there.
// It is the responsibility of the caller to free() that memory.
function allocateUTF8(str) {
  var size = lengthBytesUTF8(str) + 1;
  var ret = _malloc(size);
  if (ret) stringToUTF8Array(str, HEAP8, ret, size);
  return ret;
}

// Allocate stack space for a JS string, and write it there.
function allocateUTF8OnStack(str) {
  var size = lengthBytesUTF8(str) + 1;
  var ret = stackAlloc(size);
  stringToUTF8Array(str, HEAP8, ret, size);
  return ret;
}

// Deprecated: This function should not be called because it is unsafe and does not provide
// a maximum length limit of how many bytes it is allowed to write. Prefer calling the
// function stringToUTF8Array() instead, which takes in a maximum length that can be used
// to be secure from out of bounds writes.
/** @deprecated
    @param {boolean=} dontAddNull */
function writeStringToMemory(string, buffer, dontAddNull) {
  warnOnce('writeStringToMemory is deprecated and should not be called! Use stringToUTF8() instead!');

  var /** @type {number} */ lastChar, /** @type {number} */ end;
  if (dontAddNull) {
    // stringToUTF8Array always appends null. If we don't want to do that, remember the
    // character that existed at the location where the null will be placed, and restore
    // that after the write (below).
    end = buffer + lengthBytesUTF8(string);
    lastChar = HEAP8[end];
  }
  stringToUTF8(string, buffer, Infinity);
  if (dontAddNull) HEAP8[end] = lastChar; // Restore the value under the null character.
}

function writeArrayToMemory(array, buffer) {
  HEAP8.set(array, buffer);
}

/** @param {boolean=} dontAddNull */
function writeAsciiToMemory(str, buffer, dontAddNull) {
  for (var i = 0; i < str.length; ++i) {
    HEAP8[((buffer++)>>0)] = str.charCodeAt(i);
  }
  // Null-terminate the pointer to the HEAP.
  if (!dontAddNull) HEAP8[((buffer)>>0)] = 0;
}

// end include: runtime_strings_extra.js
// Memory management

function alignUp(x, multiple) {
  if (x % multiple > 0) {
    x += multiple - (x % multiple);
  }
  return x;
}

var HEAP,
/** @type {ArrayBuffer} */
  buffer,
/** @type {Int8Array} */
  HEAP8,
/** @type {Uint8Array} */
  HEAPU8,
/** @type {Int16Array} */
  HEAP16,
/** @type {Uint16Array} */
  HEAPU16,
/** @type {Int32Array} */
  HEAP32,
/** @type {Uint32Array} */
  HEAPU32,
/** @type {Float32Array} */
  HEAPF32,
/** @type {Float64Array} */
  HEAPF64;

function updateGlobalBufferAndViews(buf) {
  buffer = buf;
  Module['HEAP8'] = HEAP8 = new Int8Array(buf);
  Module['HEAP16'] = HEAP16 = new Int16Array(buf);
  Module['HEAP32'] = HEAP32 = new Int32Array(buf);
  Module['HEAPU8'] = HEAPU8 = new Uint8Array(buf);
  Module['HEAPU16'] = HEAPU16 = new Uint16Array(buf);
  Module['HEAPU32'] = HEAPU32 = new Uint32Array(buf);
  Module['HEAPF32'] = HEAPF32 = new Float32Array(buf);
  Module['HEAPF64'] = HEAPF64 = new Float64Array(buf);
}

var TOTAL_STACK = 5242880;

var INITIAL_MEMORY = Module['INITIAL_MEMORY'] || 16777216;

// include: runtime_init_table.js
// In regular non-RELOCATABLE mode the table is exported
// from the wasm module and this will be assigned once
// the exports are available.
var wasmTable;

// end include: runtime_init_table.js
// include: runtime_stack_check.js


// end include: runtime_stack_check.js
// include: runtime_assertions.js


// end include: runtime_assertions.js
var __ATPRERUN__  = []; // functions called before the runtime is initialized
var __ATINIT__    = []; // functions called during startup
var __ATMAIN__    = []; // functions called when main() is to be run
var __ATEXIT__    = []; // functions called during shutdown
var __ATPOSTRUN__ = []; // functions called after the main() is called

var runtimeInitialized = false;
var runtimeExited = false;

__ATINIT__.push({ func: function() { ___wasm_call_ctors() } });

function preRun() {

  if (Module['preRun']) {
    if (typeof Module['preRun'] == 'function') Module['preRun'] = [Module['preRun']];
    while (Module['preRun'].length) {
      addOnPreRun(Module['preRun'].shift());
    }
  }

  callRuntimeCallbacks(__ATPRERUN__);
}

function initRuntime() {
  runtimeInitialized = true;
  
  callRuntimeCallbacks(__ATINIT__);
}

function preMain() {
  
  callRuntimeCallbacks(__ATMAIN__);
}

function exitRuntime() {
  runtimeExited = true;
}

function postRun() {

  if (Module['postRun']) {
    if (typeof Module['postRun'] == 'function') Module['postRun'] = [Module['postRun']];
    while (Module['postRun'].length) {
      addOnPostRun(Module['postRun'].shift());
    }
  }

  callRuntimeCallbacks(__ATPOSTRUN__);
}

function addOnPreRun(cb) {
  __ATPRERUN__.unshift(cb);
}

function addOnInit(cb) {
  __ATINIT__.unshift(cb);
}

function addOnPreMain(cb) {
  __ATMAIN__.unshift(cb);
}

function addOnExit(cb) {
}

function addOnPostRun(cb) {
  __ATPOSTRUN__.unshift(cb);
}

// include: runtime_math.js


// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/imul

// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/fround

// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/clz32

// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Math/trunc

// end include: runtime_math.js
// A counter of dependencies for calling run(). If we need to
// do asynchronous work before running, increment this and
// decrement it. Incrementing must happen in a place like
// Module.preRun (used by emcc to add file preloading).
// Note that you can add dependencies in preRun, even though
// it happens right before run - run will be postponed until
// the dependencies are met.
var runDependencies = 0;
var runDependencyWatcher = null;
var dependenciesFulfilled = null; // overridden to take different actions when all run dependencies are fulfilled

function getUniqueRunDependency(id) {
  return id;
}

function addRunDependency(id) {
  runDependencies++;

  if (Module['monitorRunDependencies']) {
    Module['monitorRunDependencies'](runDependencies);
  }

}

function removeRunDependency(id) {
  runDependencies--;

  if (Module['monitorRunDependencies']) {
    Module['monitorRunDependencies'](runDependencies);
  }

  if (runDependencies == 0) {
    if (runDependencyWatcher !== null) {
      clearInterval(runDependencyWatcher);
      runDependencyWatcher = null;
    }
    if (dependenciesFulfilled) {
      var callback = dependenciesFulfilled;
      dependenciesFulfilled = null;
      callback(); // can add another dependenciesFulfilled
    }
  }
}

Module["preloadedImages"] = {}; // maps url to image data
Module["preloadedAudios"] = {}; // maps url to audio data

/** @param {string|number=} what */
function abort(what) {
  if (Module['onAbort']) {
    Module['onAbort'](what);
  }

  what += '';
  err(what);

  ABORT = true;
  EXITSTATUS = 1;

  what = 'abort(' + what + '). Build with -s ASSERTIONS=1 for more info.';

  // Use a wasm runtime error, because a JS error might be seen as a foreign
  // exception, which means we'd run destructors on it. We need the error to
  // simply make the program stop.
  var e = new WebAssembly.RuntimeError(what);

  // Throw the error whether or not MODULARIZE is set because abort is used
  // in code paths apart from instantiation where an exception is expected
  // to be thrown when abort is called.
  throw e;
}

// {{MEM_INITIALIZER}}

// include: memoryprofiler.js


// end include: memoryprofiler.js
// include: URIUtils.js


function hasPrefix(str, prefix) {
  return String.prototype.startsWith ?
      str.startsWith(prefix) :
      str.indexOf(prefix) === 0;
}

// Prefix of data URIs emitted by SINGLE_FILE and related options.
var dataURIPrefix = 'data:application/octet-stream;base64,';

// Indicates whether filename is a base64 data URI.
function isDataURI(filename) {
  return hasPrefix(filename, dataURIPrefix);
}

var fileURIPrefix = "file://";

// Indicates whether filename is delivered via file protocol (as opposed to http/https)
function isFileURI(filename) {
  return hasPrefix(filename, fileURIPrefix);
}

// end include: URIUtils.js
var wasmBinaryFile = 'App.wasm';
if (!isDataURI(wasmBinaryFile)) {
  wasmBinaryFile = locateFile(wasmBinaryFile);
}

function getBinary(file) {
  try {
    if (file == wasmBinaryFile && wasmBinary) {
      return new Uint8Array(wasmBinary);
    }
    if (readBinary) {
      return readBinary(file);
    } else {
      throw "both async and sync fetching of the wasm failed";
    }
  }
  catch (err) {
    abort(err);
  }
}

function getBinaryPromise() {
  // If we don't have the binary yet, try to to load it asynchronously.
  // Fetch has some additional restrictions over XHR, like it can't be used on a file:// url.
  // See https://github.com/github/fetch/pull/92#issuecomment-140665932
  // Cordova or Electron apps are typically loaded from a file:// url.
  // So use fetch if it is available and the url is not a file, otherwise fall back to XHR.
  if (!wasmBinary && (ENVIRONMENT_IS_WEB || ENVIRONMENT_IS_WORKER)) {
    if (typeof fetch === 'function'
      && !isFileURI(wasmBinaryFile)
    ) {
      return fetch(wasmBinaryFile, { credentials: 'same-origin' }).then(function(response) {
        if (!response['ok']) {
          throw "failed to load wasm binary file at '" + wasmBinaryFile + "'";
        }
        return response['arrayBuffer']();
      }).catch(function () {
          return getBinary(wasmBinaryFile);
      });
    }
    else {
      if (readAsync) {
        // fetch is not available or url is file => try XHR (readAsync uses XHR internally)
        return new Promise(function(resolve, reject) {
          readAsync(wasmBinaryFile, function(response) { resolve(new Uint8Array(/** @type{!ArrayBuffer} */(response))) }, reject)
        });
      }
    }
  }
    
  // Otherwise, getBinary should be able to get it synchronously
  return Promise.resolve().then(function() { return getBinary(wasmBinaryFile); });
}

// Create the wasm instance.
// Receives the wasm imports, returns the exports.
function createWasm() {
  // prepare imports
  var info = {
    'env': asmLibraryArg,
    'wasi_snapshot_preview1': asmLibraryArg,
  };
  // Load the wasm module and create an instance of using native support in the JS engine.
  // handle a generated wasm instance, receiving its exports and
  // performing other necessary setup
  /** @param {WebAssembly.Module=} module*/
  function receiveInstance(instance, module) {
    var exports = instance.exports;

    exports = Asyncify.instrumentWasmExports(exports);

    Module['asm'] = exports;

    wasmMemory = Module['asm']['memory'];
    updateGlobalBufferAndViews(wasmMemory.buffer);

    wasmTable = Module['asm']['__indirect_function_table'];

    removeRunDependency('wasm-instantiate');
  }
  // we can't run yet (except in a pthread, where we have a custom sync instantiator)
  addRunDependency('wasm-instantiate');

  function receiveInstantiatedSource(output) {
    // 'output' is a WebAssemblyInstantiatedSource object which has both the module and instance.
    // receiveInstance() will swap in the exports (to Module.asm) so they can be called
    // TODO: Due to Closure regression https://github.com/google/closure-compiler/issues/3193, the above line no longer optimizes out down to the following line.
    // When the regression is fixed, can restore the above USE_PTHREADS-enabled path.
    receiveInstance(output['instance']);
  }

  function instantiateArrayBuffer(receiver) {
    return getBinaryPromise().then(function(binary) {
      return WebAssembly.instantiate(binary, info);
    }).then(receiver, function(reason) {
      err('failed to asynchronously prepare wasm: ' + reason);

      abort(reason);
    });
  }

  // Prefer streaming instantiation if available.
  function instantiateAsync() {
    if (!wasmBinary &&
        typeof WebAssembly.instantiateStreaming === 'function' &&
        !isDataURI(wasmBinaryFile) &&
        // Don't use streaming for file:// delivered objects in a webview, fetch them synchronously.
        !isFileURI(wasmBinaryFile) &&
        typeof fetch === 'function') {
      return fetch(wasmBinaryFile, { credentials: 'same-origin' }).then(function (response) {
        var result = WebAssembly.instantiateStreaming(response, info);
        return result.then(receiveInstantiatedSource, function(reason) {
            // We expect the most common failure cause to be a bad MIME type for the binary,
            // in which case falling back to ArrayBuffer instantiation should work.
            err('wasm streaming compile failed: ' + reason);
            err('falling back to ArrayBuffer instantiation');
            return instantiateArrayBuffer(receiveInstantiatedSource);
          });
      });
    } else {
      return instantiateArrayBuffer(receiveInstantiatedSource);
    }
  }

  // User shell pages can write their own Module.instantiateWasm = function(imports, successCallback) callback
  // to manually instantiate the Wasm module themselves. This allows pages to run the instantiation parallel
  // to any other async startup actions they are performing.
  if (Module['instantiateWasm']) {
    try {
      var exports = Module['instantiateWasm'](info, receiveInstance);
      exports = Asyncify.instrumentWasmExports(exports);
      return exports;
    } catch(e) {
      err('Module.instantiateWasm callback failed with error: ' + e);
      return false;
    }
  }

  instantiateAsync();
  return {}; // no exports yet; we'll fill them in later
}

// Globals used by JS i64 conversions (see makeSetValue)
var tempDouble;
var tempI64;

// === Body ===

var ASM_CONSTS = {
  20020: function() {if ((window.AudioContext || window.webkitAudioContext) === undefined) { return 0; } if (typeof(miniaudio) === 'undefined') { miniaudio = {}; miniaudio.devices = []; miniaudio.track_device = function(device) { for (var iDevice = 0; iDevice < miniaudio.devices.length; ++iDevice) { if (miniaudio.devices[iDevice] == null) { miniaudio.devices[iDevice] = device; return iDevice; } } miniaudio.devices.push(device); return miniaudio.devices.length - 1; }; miniaudio.untrack_device_by_index = function(deviceIndex) { miniaudio.devices[deviceIndex] = null; while (miniaudio.devices.length > 0) { if (miniaudio.devices[miniaudio.devices.length-1] == null) { miniaudio.devices.pop(); } else { break; } } }; miniaudio.untrack_device = function(device) { for (var iDevice = 0; iDevice < miniaudio.devices.length; ++iDevice) { if (miniaudio.devices[iDevice] == device) { return miniaudio.untrack_device_by_index(iDevice); } } }; miniaudio.get_device_by_index = function(deviceIndex) { return miniaudio.devices[deviceIndex]; }; } return 1;},  
 21260: function() {return (navigator.mediaDevices !== undefined && navigator.mediaDevices.getUserMedia !== undefined);},  
 21401: function() {try { var temp = new (window.AudioContext || window.webkitAudioContext)(); var sampleRate = temp.sampleRate; temp.close(); return sampleRate; } catch(e) { return 0; }},  
 21627: function($0, $1, $2, $3, $4) {var channels = $0; var sampleRate = $1; var bufferSize = $2; var isCapture = $3; var pDevice = $4; if (typeof(miniaudio) === 'undefined') { return -1; } var device = {}; device.webaudio = new (window.AudioContext || window.webkitAudioContext)({sampleRate:sampleRate}); device.webaudio.suspend(); device.intermediaryBufferSizeInBytes = channels * bufferSize * 4; device.intermediaryBuffer = Module._malloc(device.intermediaryBufferSizeInBytes); device.intermediaryBufferView = new Float32Array(Module.HEAPF32.buffer, device.intermediaryBuffer, device.intermediaryBufferSizeInBytes); device.scriptNode = device.webaudio.createScriptProcessor(bufferSize, channels, channels); if (isCapture) { device.scriptNode.onaudioprocess = function(e) { if (device.intermediaryBuffer === undefined) { return; } for (var iChannel = 0; iChannel < e.outputBuffer.numberOfChannels; ++iChannel) { e.outputBuffer.getChannelData(iChannel).fill(0.0); } var sendSilence = false; if (device.streamNode === undefined) { sendSilence = true; } if (e.inputBuffer.numberOfChannels != channels) { console.log("Capture: Channel count mismatch. " + e.inputBufer.numberOfChannels + " != " + channels + ". Sending silence."); sendSilence = true; } var totalFramesProcessed = 0; while (totalFramesProcessed < e.inputBuffer.length) { var framesRemaining = e.inputBuffer.length - totalFramesProcessed; var framesToProcess = framesRemaining; if (framesToProcess > (device.intermediaryBufferSizeInBytes/channels/4)) { framesToProcess = (device.intermediaryBufferSizeInBytes/channels/4); } if (sendSilence) { device.intermediaryBufferView.fill(0.0); } else { for (var iFrame = 0; iFrame < framesToProcess; ++iFrame) { for (var iChannel = 0; iChannel < e.inputBuffer.numberOfChannels; ++iChannel) { device.intermediaryBufferView[iFrame*channels + iChannel] = e.inputBuffer.getChannelData(iChannel)[totalFramesProcessed + iFrame]; } } } ccall("ma_device_process_pcm_frames_capture__webaudio", "undefined", ["number", "number", "number"], [pDevice, framesToProcess, device.intermediaryBuffer]); totalFramesProcessed += framesToProcess; } }; navigator.mediaDevices.getUserMedia({audio:true, video:false}) .then(function(stream) { device.streamNode = device.webaudio.createMediaStreamSource(stream); device.streamNode.connect(device.scriptNode); device.scriptNode.connect(device.webaudio.destination); }) .catch(function(error) { device.scriptNode.connect(device.webaudio.destination); }); } else { device.scriptNode.onaudioprocess = function(e) { if (device.intermediaryBuffer === undefined) { return; } var outputSilence = false; if (e.outputBuffer.numberOfChannels != channels) { console.log("Playback: Channel count mismatch. " + e.outputBufer.numberOfChannels + " != " + channels + ". Outputting silence."); outputSilence = true; return; } var totalFramesProcessed = 0; while (totalFramesProcessed < e.outputBuffer.length) { var framesRemaining = e.outputBuffer.length - totalFramesProcessed; var framesToProcess = framesRemaining; if (framesToProcess > (device.intermediaryBufferSizeInBytes/channels/4)) { framesToProcess = (device.intermediaryBufferSizeInBytes/channels/4); } ccall("ma_device_process_pcm_frames_playback__webaudio", "undefined", ["number", "number", "number"], [pDevice, framesToProcess, device.intermediaryBuffer]); if (outputSilence) { for (var iChannel = 0; iChannel < e.outputBuffer.numberOfChannels; ++iChannel) { e.outputBuffer.getChannelData(iChannel).fill(0.0); } } else { for (var iChannel = 0; iChannel < e.outputBuffer.numberOfChannels; ++iChannel) { for (var iFrame = 0; iFrame < framesToProcess; ++iFrame) { e.outputBuffer.getChannelData(iChannel)[totalFramesProcessed + iFrame] = device.intermediaryBufferView[iFrame*channels + iChannel]; } } } totalFramesProcessed += framesToProcess; } }; device.scriptNode.connect(device.webaudio.destination); } return miniaudio.track_device(device);},  
 25511: function($0) {return miniaudio.get_device_by_index($0).webaudio.sampleRate;},  
 25613: function($0) {var device = miniaudio.get_device_by_index($0); if (device.scriptNode !== undefined) { device.scriptNode.onaudioprocess = function(e) {}; device.scriptNode.disconnect(); device.scriptNode = undefined; } if (device.streamNode !== undefined) { device.streamNode.disconnect(); device.streamNode = undefined; } device.webaudio.close(); device.webaudio = undefined; if (device.intermediaryBuffer !== undefined) { Module._free(device.intermediaryBuffer); device.intermediaryBuffer = undefined; device.intermediaryBufferView = undefined; device.intermediaryBufferSizeInBytes = undefined; } miniaudio.untrack_device_by_index($0);},  
 26292: function($0) {miniaudio.get_device_by_index($0).webaudio.resume();},  
 26374: function($0) {miniaudio.get_device_by_index($0).webaudio.suspend();}
};






  function callRuntimeCallbacks(callbacks) {
      while(callbacks.length > 0) {
        var callback = callbacks.shift();
        if (typeof callback == 'function') {
          callback(Module); // Pass the module as the first argument.
          continue;
        }
        var func = callback.func;
        if (typeof func === 'number') {
          if (callback.arg === undefined) {
            (function() { dynCall_v.call(null, func); })();
          } else {
            (function(a1) { dynCall_vi.apply(null, [func, a1]); })(callback.arg);
          }
        } else {
          func(callback.arg === undefined ? null : callback.arg);
        }
      }
    }

  function demangle(func) {
      return func;
    }

  function demangleAll(text) {
      var regex =
        /\b_Z[\w\d_]+/g;
      return text.replace(regex,
        function(x) {
          var y = demangle(x);
          return x === y ? x : (y + ' [' + x + ']');
        });
    }

  function jsStackTrace() {
      var error = new Error();
      if (!error.stack) {
        // IE10+ special cases: It does have callstack info, but it is only populated if an Error object is thrown,
        // so try that as a special-case.
        try {
          throw new Error();
        } catch(e) {
          error = e;
        }
        if (!error.stack) {
          return '(no stack trace available)';
        }
      }
      return error.stack.toString();
    }

  function stackTrace() {
      var js = jsStackTrace();
      if (Module['extraStackTrace']) js += '\n' + Module['extraStackTrace']();
      return demangleAll(js);
    }

  function ___assert_fail(condition, filename, line, func) {
      abort('Assertion failed: ' + UTF8ToString(condition) + ', at: ' + [filename ? UTF8ToString(filename) : 'unknown filename', line, func ? UTF8ToString(func) : 'unknown function']);
    }

  function _emscripten_asm_const_int(code, sigPtr, argbuf) {
      var args = readAsmConstArgs(sigPtr, argbuf);
      return ASM_CONSTS[code].apply(null, args);
    }

  var JSEvents={inEventHandler:0,removeAllEventListeners:function() {
        for(var i = JSEvents.eventHandlers.length-1; i >= 0; --i) {
          JSEvents._removeHandler(i);
        }
        JSEvents.eventHandlers = [];
        JSEvents.deferredCalls = [];
      },registerRemoveEventListeners:function() {
        if (!JSEvents.removeEventListenersRegistered) {
          __ATEXIT__.push(JSEvents.removeAllEventListeners);
          JSEvents.removeEventListenersRegistered = true;
        }
      },deferredCalls:[],deferCall:function(targetFunction, precedence, argsList) {
        function arraysHaveEqualContent(arrA, arrB) {
          if (arrA.length != arrB.length) return false;
  
          for(var i in arrA) {
            if (arrA[i] != arrB[i]) return false;
          }
          return true;
        }
        // Test if the given call was already queued, and if so, don't add it again.
        for(var i in JSEvents.deferredCalls) {
          var call = JSEvents.deferredCalls[i];
          if (call.targetFunction == targetFunction && arraysHaveEqualContent(call.argsList, argsList)) {
            return;
          }
        }
        JSEvents.deferredCalls.push({
          targetFunction: targetFunction,
          precedence: precedence,
          argsList: argsList
        });
  
        JSEvents.deferredCalls.sort(function(x,y) { return x.precedence < y.precedence; });
      },removeDeferredCalls:function(targetFunction) {
        for(var i = 0; i < JSEvents.deferredCalls.length; ++i) {
          if (JSEvents.deferredCalls[i].targetFunction == targetFunction) {
            JSEvents.deferredCalls.splice(i, 1);
            --i;
          }
        }
      },canPerformEventHandlerRequests:function() {
        return JSEvents.inEventHandler && JSEvents.currentEventHandler.allowsDeferredCalls;
      },runDeferredCalls:function() {
        if (!JSEvents.canPerformEventHandlerRequests()) {
          return;
        }
        for(var i = 0; i < JSEvents.deferredCalls.length; ++i) {
          var call = JSEvents.deferredCalls[i];
          JSEvents.deferredCalls.splice(i, 1);
          --i;
          call.targetFunction.apply(null, call.argsList);
        }
      },eventHandlers:[],removeAllHandlersOnTarget:function(target, eventTypeString) {
        for(var i = 0; i < JSEvents.eventHandlers.length; ++i) {
          if (JSEvents.eventHandlers[i].target == target && 
            (!eventTypeString || eventTypeString == JSEvents.eventHandlers[i].eventTypeString)) {
             JSEvents._removeHandler(i--);
           }
        }
      },_removeHandler:function(i) {
        var h = JSEvents.eventHandlers[i];
        h.target.removeEventListener(h.eventTypeString, h.eventListenerFunc, h.useCapture);
        JSEvents.eventHandlers.splice(i, 1);
      },registerOrRemoveHandler:function(eventHandler) {
        var jsEventHandler = function jsEventHandler(event) {
          // Increment nesting count for the event handler.
          ++JSEvents.inEventHandler;
          JSEvents.currentEventHandler = eventHandler;
          // Process any old deferred calls the user has placed.
          JSEvents.runDeferredCalls();
          // Process the actual event, calls back to user C code handler.
          eventHandler.handlerFunc(event);
          // Process any new deferred calls that were placed right now from this event handler.
          JSEvents.runDeferredCalls();
          // Out of event handler - restore nesting count.
          --JSEvents.inEventHandler;
        };
        
        if (eventHandler.callbackfunc) {
          eventHandler.eventListenerFunc = jsEventHandler;
          eventHandler.target.addEventListener(eventHandler.eventTypeString, jsEventHandler, eventHandler.useCapture);
          JSEvents.eventHandlers.push(eventHandler);
          JSEvents.registerRemoveEventListeners();
        } else {
          for(var i = 0; i < JSEvents.eventHandlers.length; ++i) {
            if (JSEvents.eventHandlers[i].target == eventHandler.target
             && JSEvents.eventHandlers[i].eventTypeString == eventHandler.eventTypeString) {
               JSEvents._removeHandler(i--);
             }
          }
        }
      },getNodeNameForTarget:function(target) {
        if (!target) return '';
        if (target == window) return '#window';
        if (target == screen) return '#screen';
        return (target && target.nodeName) ? target.nodeName : '';
      },fullscreenEnabled:function() {
        return document.fullscreenEnabled
        // Safari 13.0.3 on macOS Catalina 10.15.1 still ships with prefixed webkitFullscreenEnabled.
        // TODO: If Safari at some point ships with unprefixed version, update the version check above.
        || document.webkitFullscreenEnabled
         ;
      }};
  
  function setLetterbox(element, topBottom, leftRight) {
        // Cannot use margin to specify letterboxes in FF or Chrome, since those ignore margins in fullscreen mode.
        element.style.paddingLeft = element.style.paddingRight = leftRight + 'px';
        element.style.paddingTop = element.style.paddingBottom = topBottom + 'px';
    }
  
  function hideEverythingExceptGivenElement(onlyVisibleElement) {
      var child = onlyVisibleElement;
      var parent = child.parentNode;
      var hiddenElements = [];
      while (child != document.body) {
        var children = parent.children;
        for (var i = 0; i < children.length; ++i) {
          if (children[i] != child) {
            hiddenElements.push({ node: children[i], displayState: children[i].style.display });
            children[i].style.display = 'none';
          }
        }
        child = parent;
        parent = parent.parentNode;
      }
      return hiddenElements;
    }
  
  var restoreOldWindowedStyle=null;
  
  function maybeCStringToJsString(cString) {
      // "cString > 2" checks if the input is a number, and isn't of the special
      // values we accept here, EMSCRIPTEN_EVENT_TARGET_* (which map to 0, 1, 2).
      // In other words, if cString > 2 then it's a pointer to a valid place in
      // memory, and points to a C string.
      return cString > 2 ? UTF8ToString(cString) : cString;
    }
  
  var specialHTMLTargets=[0, typeof document !== 'undefined' ? document : 0, typeof window !== 'undefined' ? window : 0];
  function findEventTarget(target) {
      target = maybeCStringToJsString(target);
      var domElement = specialHTMLTargets[target] || (typeof document !== 'undefined' ? document.querySelector(target) : undefined);
      return domElement;
    }
  function findCanvasEventTarget(target) { return findEventTarget(target); }
  function _emscripten_get_canvas_element_size(target, width, height) {
      var canvas = findCanvasEventTarget(target);
      if (!canvas) return -4;
      HEAP32[((width)>>2)] = canvas.width;
      HEAP32[((height)>>2)] = canvas.height;
    }
  function getCanvasElementSize(target) {
      var stackTop = stackSave();
      var w = stackAlloc(8);
      var h = w + 4;
  
      var targetInt = stackAlloc(target.id.length+1);
      stringToUTF8(target.id, targetInt, target.id.length+1);
      var ret = _emscripten_get_canvas_element_size(targetInt, w, h);
      var size = [HEAP32[((w)>>2)], HEAP32[((h)>>2)]];
      stackRestore(stackTop);
      return size;
    }
  
  function _emscripten_set_canvas_element_size(target, width, height) {
      var canvas = findCanvasEventTarget(target);
      if (!canvas) return -4;
      canvas.width = width;
      canvas.height = height;
      return 0;
    }
  function setCanvasElementSize(target, width, height) {
      if (!target.controlTransferredOffscreen) {
        target.width = width;
        target.height = height;
      } else {
        // This function is being called from high-level JavaScript code instead of asm.js/Wasm,
        // and it needs to synchronously proxy over to another thread, so marshal the string onto the heap to do the call.
        var stackTop = stackSave();
        var targetInt = stackAlloc(target.id.length+1);
        stringToUTF8(target.id, targetInt, target.id.length+1);
        _emscripten_set_canvas_element_size(targetInt, width, height);
        stackRestore(stackTop);
      }
    }
  function registerRestoreOldStyle(canvas) {
      var canvasSize = getCanvasElementSize(canvas);
      var oldWidth = canvasSize[0];
      var oldHeight = canvasSize[1];
      var oldCssWidth = canvas.style.width;
      var oldCssHeight = canvas.style.height;
      var oldBackgroundColor = canvas.style.backgroundColor; // Chrome reads color from here.
      var oldDocumentBackgroundColor = document.body.style.backgroundColor; // IE11 reads color from here.
      // Firefox always has black background color.
      var oldPaddingLeft = canvas.style.paddingLeft; // Chrome, FF, Safari
      var oldPaddingRight = canvas.style.paddingRight;
      var oldPaddingTop = canvas.style.paddingTop;
      var oldPaddingBottom = canvas.style.paddingBottom;
      var oldMarginLeft = canvas.style.marginLeft; // IE11
      var oldMarginRight = canvas.style.marginRight;
      var oldMarginTop = canvas.style.marginTop;
      var oldMarginBottom = canvas.style.marginBottom;
      var oldDocumentBodyMargin = document.body.style.margin;
      var oldDocumentOverflow = document.documentElement.style.overflow; // Chrome, Firefox
      var oldDocumentScroll = document.body.scroll; // IE
      var oldImageRendering = canvas.style.imageRendering;
  
      function restoreOldStyle() {
        var fullscreenElement = document.fullscreenElement
          || document.webkitFullscreenElement
          || document.msFullscreenElement
          ;
        if (!fullscreenElement) {
          document.removeEventListener('fullscreenchange', restoreOldStyle);
  
          // Unprefixed Fullscreen API shipped in Chromium 71 (https://bugs.chromium.org/p/chromium/issues/detail?id=383813)
          // As of Safari 13.0.3 on macOS Catalina 10.15.1 still ships with prefixed webkitfullscreenchange. TODO: revisit this check once Safari ships unprefixed version.
          document.removeEventListener('webkitfullscreenchange', restoreOldStyle);
  
          setCanvasElementSize(canvas, oldWidth, oldHeight);
  
          canvas.style.width = oldCssWidth;
          canvas.style.height = oldCssHeight;
          canvas.style.backgroundColor = oldBackgroundColor; // Chrome
          // IE11 hack: assigning 'undefined' or an empty string to document.body.style.backgroundColor has no effect, so first assign back the default color
          // before setting the undefined value. Setting undefined value is also important, or otherwise we would later treat that as something that the user
          // had explicitly set so subsequent fullscreen transitions would not set background color properly.
          if (!oldDocumentBackgroundColor) document.body.style.backgroundColor = 'white';
          document.body.style.backgroundColor = oldDocumentBackgroundColor; // IE11
          canvas.style.paddingLeft = oldPaddingLeft; // Chrome, FF, Safari
          canvas.style.paddingRight = oldPaddingRight;
          canvas.style.paddingTop = oldPaddingTop;
          canvas.style.paddingBottom = oldPaddingBottom;
          canvas.style.marginLeft = oldMarginLeft; // IE11
          canvas.style.marginRight = oldMarginRight;
          canvas.style.marginTop = oldMarginTop;
          canvas.style.marginBottom = oldMarginBottom;
          document.body.style.margin = oldDocumentBodyMargin;
          document.documentElement.style.overflow = oldDocumentOverflow; // Chrome, Firefox
          document.body.scroll = oldDocumentScroll; // IE
          canvas.style.imageRendering = oldImageRendering;
          if (canvas.GLctxObject) canvas.GLctxObject.GLctx.viewport(0, 0, oldWidth, oldHeight);
  
          if (currentFullscreenStrategy.canvasResizedCallback) {
            (function(a1, a2, a3) { dynCall_iiii.apply(null, [currentFullscreenStrategy.canvasResizedCallback, a1, a2, a3]); })(37, 0, currentFullscreenStrategy.canvasResizedCallbackUserData);
          }
        }
      }
      document.addEventListener('fullscreenchange', restoreOldStyle);
      // Unprefixed Fullscreen API shipped in Chromium 71 (https://bugs.chromium.org/p/chromium/issues/detail?id=383813)
      // As of Safari 13.0.3 on macOS Catalina 10.15.1 still ships with prefixed webkitfullscreenchange. TODO: revisit this check once Safari ships unprefixed version.
      document.addEventListener('webkitfullscreenchange', restoreOldStyle);
      return restoreOldStyle;
    }
  
  function restoreHiddenElements(hiddenElements) {
      for (var i = 0; i < hiddenElements.length; ++i) {
        hiddenElements[i].node.style.display = hiddenElements[i].displayState;
      }
    }
  
  var currentFullscreenStrategy={};
  
  /** @suppress {checkTypes} */
  function jstoi_q(str) {
      return parseInt(str);
    }
  function softFullscreenResizeWebGLRenderTarget() {
      var dpr = devicePixelRatio;
      var inHiDPIFullscreenMode = currentFullscreenStrategy.canvasResolutionScaleMode == 2;
      var inAspectRatioFixedFullscreenMode = currentFullscreenStrategy.scaleMode == 2;
      var inPixelPerfectFullscreenMode = currentFullscreenStrategy.canvasResolutionScaleMode != 0;
      var inCenteredWithoutScalingFullscreenMode = currentFullscreenStrategy.scaleMode == 3;
      var screenWidth = inHiDPIFullscreenMode ? Math.round(innerWidth*dpr) : innerWidth;
      var screenHeight = inHiDPIFullscreenMode ? Math.round(innerHeight*dpr) : innerHeight;
      var w = screenWidth;
      var h = screenHeight;
      var canvas = currentFullscreenStrategy.target;
      var canvasSize = getCanvasElementSize(canvas);
      var x = canvasSize[0];
      var y = canvasSize[1];
      var topMargin;
  
      if (inAspectRatioFixedFullscreenMode) {
        if (w*y < x*h) h = (w * y / x) | 0;
        else if (w*y > x*h) w = (h * x / y) | 0;
        topMargin = ((screenHeight - h) / 2) | 0;
      }
  
      if (inPixelPerfectFullscreenMode) {
        setCanvasElementSize(canvas, w, h);
        if (canvas.GLctxObject) canvas.GLctxObject.GLctx.viewport(0, 0, w, h);
      }
  
      // Back to CSS pixels.
      if (inHiDPIFullscreenMode) {
        topMargin /= dpr;
        w /= dpr;
        h /= dpr;
        // Round to nearest 4 digits of precision.
        w = Math.round(w*1e4)/1e4;
        h = Math.round(h*1e4)/1e4;
        topMargin = Math.round(topMargin*1e4)/1e4;
      }
  
      if (inCenteredWithoutScalingFullscreenMode) {
        var t = (innerHeight - jstoi_q(canvas.style.height)) / 2;
        var b = (innerWidth - jstoi_q(canvas.style.width)) / 2;
        setLetterbox(canvas, t, b);
      } else {
        canvas.style.width = w + 'px';
        canvas.style.height = h + 'px';
        var b = (innerWidth - w) / 2;
        setLetterbox(canvas, topMargin, b);
      }
  
      if (!inCenteredWithoutScalingFullscreenMode && currentFullscreenStrategy.canvasResizedCallback) {
        (function(a1, a2, a3) { dynCall_iiii.apply(null, [currentFullscreenStrategy.canvasResizedCallback, a1, a2, a3]); })(37, 0, currentFullscreenStrategy.canvasResizedCallbackUserData);
      }
    }
  
  function getBoundingClientRect(e) {
      return specialHTMLTargets.indexOf(e) < 0 ? e.getBoundingClientRect() : {'left':0,'top':0};
    }
  function _JSEvents_resizeCanvasForFullscreen(target, strategy) {
      var restoreOldStyle = registerRestoreOldStyle(target);
      var cssWidth = strategy.softFullscreen ? innerWidth : screen.width;
      var cssHeight = strategy.softFullscreen ? innerHeight : screen.height;
      var rect = getBoundingClientRect(target);
      var windowedCssWidth = rect.width;
      var windowedCssHeight = rect.height;
      var canvasSize = getCanvasElementSize(target);
      var windowedRttWidth = canvasSize[0];
      var windowedRttHeight = canvasSize[1];
  
      if (strategy.scaleMode == 3) {
        setLetterbox(target, (cssHeight - windowedCssHeight) / 2, (cssWidth - windowedCssWidth) / 2);
        cssWidth = windowedCssWidth;
        cssHeight = windowedCssHeight;
      } else if (strategy.scaleMode == 2) {
        if (cssWidth*windowedRttHeight < windowedRttWidth*cssHeight) {
          var desiredCssHeight = windowedRttHeight * cssWidth / windowedRttWidth;
          setLetterbox(target, (cssHeight - desiredCssHeight) / 2, 0);
          cssHeight = desiredCssHeight;
        } else {
          var desiredCssWidth = windowedRttWidth * cssHeight / windowedRttHeight;
          setLetterbox(target, 0, (cssWidth - desiredCssWidth) / 2);
          cssWidth = desiredCssWidth;
        }
      }
  
      // If we are adding padding, must choose a background color or otherwise Chrome will give the
      // padding a default white color. Do it only if user has not customized their own background color.
      if (!target.style.backgroundColor) target.style.backgroundColor = 'black';
      // IE11 does the same, but requires the color to be set in the document body.
      if (!document.body.style.backgroundColor) document.body.style.backgroundColor = 'black'; // IE11
      // Firefox always shows black letterboxes independent of style color.
  
      target.style.width = cssWidth + 'px';
      target.style.height = cssHeight + 'px';
  
      if (strategy.filteringMode == 1) {
        target.style.imageRendering = 'optimizeSpeed';
        target.style.imageRendering = '-moz-crisp-edges';
        target.style.imageRendering = '-o-crisp-edges';
        target.style.imageRendering = '-webkit-optimize-contrast';
        target.style.imageRendering = 'optimize-contrast';
        target.style.imageRendering = 'crisp-edges';
        target.style.imageRendering = 'pixelated';
      }
  
      var dpiScale = (strategy.canvasResolutionScaleMode == 2) ? devicePixelRatio : 1;
      if (strategy.canvasResolutionScaleMode != 0) {
        var newWidth = (cssWidth * dpiScale)|0;
        var newHeight = (cssHeight * dpiScale)|0;
        setCanvasElementSize(target, newWidth, newHeight);
        if (target.GLctxObject) target.GLctxObject.GLctx.viewport(0, 0, newWidth, newHeight);
      }
      return restoreOldStyle;
    }
  function _emscripten_enter_soft_fullscreen(target, fullscreenStrategy) {
      target = findEventTarget(target);
      if (!target) return -4;
  
      var strategy = {
          scaleMode: HEAP32[((fullscreenStrategy)>>2)],
          canvasResolutionScaleMode: HEAP32[(((fullscreenStrategy)+(4))>>2)],
          filteringMode: HEAP32[(((fullscreenStrategy)+(8))>>2)],
          canvasResizedCallback: HEAP32[(((fullscreenStrategy)+(12))>>2)],
          canvasResizedCallbackUserData: HEAP32[(((fullscreenStrategy)+(16))>>2)],
          target: target,
          softFullscreen: true
      };
  
      var restoreOldStyle = _JSEvents_resizeCanvasForFullscreen(target, strategy);
  
      document.documentElement.style.overflow = 'hidden';  // Firefox, Chrome
      document.body.scroll = "no"; // IE11
      document.body.style.margin = '0px'; // Override default document margin area on all browsers.
  
      var hiddenElements = hideEverythingExceptGivenElement(target);
  
      function restoreWindowedState() {
        restoreOldStyle();
        restoreHiddenElements(hiddenElements);
        removeEventListener('resize', softFullscreenResizeWebGLRenderTarget);
        if (strategy.canvasResizedCallback) {
          (function(a1, a2, a3) { dynCall_iiii.apply(null, [strategy.canvasResizedCallback, a1, a2, a3]); })(37, 0, strategy.canvasResizedCallbackUserData);
        }
        currentFullscreenStrategy = 0;
      }
      restoreOldWindowedStyle = restoreWindowedState;
      currentFullscreenStrategy = strategy;
      addEventListener('resize', softFullscreenResizeWebGLRenderTarget);
  
      // Inform the caller that the canvas size has changed.
      if (strategy.canvasResizedCallback) {
        (function(a1, a2, a3) { dynCall_iiii.apply(null, [strategy.canvasResizedCallback, a1, a2, a3]); })(37, 0, strategy.canvasResizedCallbackUserData);
      }
  
      return 0;
    }

  function _JSEvents_requestFullscreen(target, strategy) {
      // EMSCRIPTEN_FULLSCREEN_SCALE_DEFAULT + EMSCRIPTEN_FULLSCREEN_CANVAS_SCALE_NONE is a mode where no extra logic is performed to the DOM elements.
      if (strategy.scaleMode != 0 || strategy.canvasResolutionScaleMode != 0) {
        _JSEvents_resizeCanvasForFullscreen(target, strategy);
      }
  
      if (target.requestFullscreen) {
        target.requestFullscreen();
      } else if (target.webkitRequestFullscreen) {
        target.webkitRequestFullscreen(Element.ALLOW_KEYBOARD_INPUT);
      } else {
        return JSEvents.fullscreenEnabled() ? -3 : -1;
      }
  
      currentFullscreenStrategy = strategy;
  
      if (strategy.canvasResizedCallback) {
        (function(a1, a2, a3) { dynCall_iiii.apply(null, [strategy.canvasResizedCallback, a1, a2, a3]); })(37, 0, strategy.canvasResizedCallbackUserData);
      }
  
      return 0;
    }
  function _emscripten_exit_fullscreen() {
      if (!JSEvents.fullscreenEnabled()) return -1;
      // Make sure no queued up calls will fire after this.
      JSEvents.removeDeferredCalls(_JSEvents_requestFullscreen);
  
      var d = specialHTMLTargets[1];
      if (d.exitFullscreen) {
        d.fullscreenElement && d.exitFullscreen();
      } else if (d.webkitExitFullscreen) {
        d.webkitFullscreenElement && d.webkitExitFullscreen();
      } else {
        return -1;
      }
  
      return 0;
    }

  function _emscripten_get_element_css_size(target, width, height) {
      target = findEventTarget(target);
      if (!target) return -4;
  
      var rect = getBoundingClientRect(target);
      HEAPF64[((width)>>3)] = rect.width;
      HEAPF64[((height)>>3)] = rect.height;
  
      return 0;
    }

  function fillPointerlockChangeEventData(eventStruct) {
      var pointerLockElement = document.pointerLockElement || document.mozPointerLockElement || document.webkitPointerLockElement || document.msPointerLockElement;
      var isPointerlocked = !!pointerLockElement;
      /** @suppress {checkTypes} */
      HEAP32[((eventStruct)>>2)] = isPointerlocked;
      var nodeName = JSEvents.getNodeNameForTarget(pointerLockElement);
      var id = (pointerLockElement && pointerLockElement.id) ? pointerLockElement.id : '';
      stringToUTF8(nodeName, eventStruct + 4, 128);
      stringToUTF8(id, eventStruct + 132, 128);
    }
  /** @suppress {missingProperties} */
  function _emscripten_get_pointerlock_status(pointerlockStatus) {
      if (pointerlockStatus) fillPointerlockChangeEventData(pointerlockStatus);
      if (!document.body || (!document.body.requestPointerLock && !document.body.mozRequestPointerLock && !document.body.webkitRequestPointerLock && !document.body.msRequestPointerLock)) {
        return -1;
      }
      return 0;
    }

  function _emscripten_memcpy_big(dest, src, num) {
      HEAPU8.copyWithin(dest, src, src + num);
    }

  function _emscripten_performance_now() {
      return performance.now();
    }

  function _emscripten_get_heap_size() {
      return HEAPU8.length;
    }
  
  function abortOnCannotGrowMemory(requestedSize) {
      abort('OOM');
    }
  function _emscripten_resize_heap(requestedSize) {
      requestedSize = requestedSize >>> 0;
      abortOnCannotGrowMemory(requestedSize);
    }


  function fillMouseEventData(eventStruct, e, target) {
      var idx = eventStruct >> 2;
      HEAP32[idx + 0] = e.screenX;
      HEAP32[idx + 1] = e.screenY;
      HEAP32[idx + 2] = e.clientX;
      HEAP32[idx + 3] = e.clientY;
      HEAP32[idx + 4] = e.ctrlKey;
      HEAP32[idx + 5] = e.shiftKey;
      HEAP32[idx + 6] = e.altKey;
      HEAP32[idx + 7] = e.metaKey;
      HEAP16[idx*2 + 16] = e.button;
      HEAP16[idx*2 + 17] = e.buttons;
  
      HEAP32[idx + 9] = e["movementX"]
        ;
  
      HEAP32[idx + 10] = e["movementY"]
        ;
  
      var rect = getBoundingClientRect(target);
      HEAP32[idx + 11] = e.clientX - rect.left;
      HEAP32[idx + 12] = e.clientY - rect.top;
  
    }
  function registerMouseEventCallback(target, userData, useCapture, callbackfunc, eventTypeId, eventTypeString, targetThread) {
      if (!JSEvents.mouseEvent) JSEvents.mouseEvent = _malloc( 64 );
      target = findEventTarget(target);
  
      var mouseEventHandlerFunc = function(ev) {
        var e = ev || event;
  
        // TODO: Make this access thread safe, or this could update live while app is reading it.
        fillMouseEventData(JSEvents.mouseEvent, e, target);
  
        if ((function(a1, a2, a3) { dynCall_iiii.apply(null, [callbackfunc, a1, a2, a3]); })(eventTypeId, JSEvents.mouseEvent, userData)) e.preventDefault();
      };
  
      var eventHandler = {
        target: target,
        allowsDeferredCalls: eventTypeString != 'mousemove' && eventTypeString != 'mouseenter' && eventTypeString != 'mouseleave', // Mouse move events do not allow fullscreen/pointer lock requests to be handled in them!
        eventTypeString: eventTypeString,
        callbackfunc: callbackfunc,
        handlerFunc: mouseEventHandlerFunc,
        useCapture: useCapture
      };
      JSEvents.registerOrRemoveHandler(eventHandler);
    }
  function _emscripten_set_click_callback_on_thread(target, userData, useCapture, callbackfunc, targetThread) {
      registerMouseEventCallback(target, userData, useCapture, callbackfunc, 4, "click", targetThread);
      return 0;
    }

  function fillFullscreenChangeEventData(eventStruct) {
      var fullscreenElement = document.fullscreenElement || document.mozFullScreenElement || document.webkitFullscreenElement || document.msFullscreenElement;
      var isFullscreen = !!fullscreenElement;
      /** @suppress{checkTypes} */
      HEAP32[((eventStruct)>>2)] = isFullscreen;
      HEAP32[(((eventStruct)+(4))>>2)] = JSEvents.fullscreenEnabled();
      // If transitioning to fullscreen, report info about the element that is now fullscreen.
      // If transitioning to windowed mode, report info about the element that just was fullscreen.
      var reportedElement = isFullscreen ? fullscreenElement : JSEvents.previousFullscreenElement;
      var nodeName = JSEvents.getNodeNameForTarget(reportedElement);
      var id = (reportedElement && reportedElement.id) ? reportedElement.id : '';
      stringToUTF8(nodeName, eventStruct + 8, 128);
      stringToUTF8(id, eventStruct + 136, 128);
      HEAP32[(((eventStruct)+(264))>>2)] = reportedElement ? reportedElement.clientWidth : 0;
      HEAP32[(((eventStruct)+(268))>>2)] = reportedElement ? reportedElement.clientHeight : 0;
      HEAP32[(((eventStruct)+(272))>>2)] = screen.width;
      HEAP32[(((eventStruct)+(276))>>2)] = screen.height;
      if (isFullscreen) {
        JSEvents.previousFullscreenElement = fullscreenElement;
      }
    }
  function registerFullscreenChangeEventCallback(target, userData, useCapture, callbackfunc, eventTypeId, eventTypeString, targetThread) {
      if (!JSEvents.fullscreenChangeEvent) JSEvents.fullscreenChangeEvent = _malloc( 280 );
  
      var fullscreenChangeEventhandlerFunc = function(ev) {
        var e = ev || event;
  
        var fullscreenChangeEvent = JSEvents.fullscreenChangeEvent;
  
        fillFullscreenChangeEventData(fullscreenChangeEvent);
  
        if ((function(a1, a2, a3) { dynCall_iiii.apply(null, [callbackfunc, a1, a2, a3]); })(eventTypeId, fullscreenChangeEvent, userData)) e.preventDefault();
      };
  
      var eventHandler = {
        target: target,
        eventTypeString: eventTypeString,
        callbackfunc: callbackfunc,
        handlerFunc: fullscreenChangeEventhandlerFunc,
        useCapture: useCapture
      };
      JSEvents.registerOrRemoveHandler(eventHandler);
    }
  function _emscripten_set_fullscreenchange_callback_on_thread(target, userData, useCapture, callbackfunc, targetThread) {
      if (!JSEvents.fullscreenEnabled()) return -1;
      target = findEventTarget(target);
      if (!target) return -4;
      registerFullscreenChangeEventCallback(target, userData, useCapture, callbackfunc, 19, "fullscreenchange", targetThread);
  
      // Unprefixed Fullscreen API shipped in Chromium 71 (https://bugs.chromium.org/p/chromium/issues/detail?id=383813)
      // As of Safari 13.0.3 on macOS Catalina 10.15.1 still ships with prefixed webkitfullscreenchange. TODO: revisit this check once Safari ships unprefixed version.
      registerFullscreenChangeEventCallback(target, userData, useCapture, callbackfunc, 19, "webkitfullscreenchange", targetThread);
  
      return 0;
    }

  function registerKeyEventCallback(target, userData, useCapture, callbackfunc, eventTypeId, eventTypeString, targetThread) {
      if (!JSEvents.keyEvent) JSEvents.keyEvent = _malloc( 164 );
  
      var keyEventHandlerFunc = function(e) {
  
        var keyEventData = JSEvents.keyEvent;
        var idx = keyEventData >> 2;
  
        HEAP32[idx + 0] = e.location;
        HEAP32[idx + 1] = e.ctrlKey;
        HEAP32[idx + 2] = e.shiftKey;
        HEAP32[idx + 3] = e.altKey;
        HEAP32[idx + 4] = e.metaKey;
        HEAP32[idx + 5] = e.repeat;
        HEAP32[idx + 6] = e.charCode;
        HEAP32[idx + 7] = e.keyCode;
        HEAP32[idx + 8] = e.which;
        stringToUTF8(e.key || '', keyEventData + 36, 32);
        stringToUTF8(e.code || '', keyEventData + 68, 32);
        stringToUTF8(e.char || '', keyEventData + 100, 32);
        stringToUTF8(e.locale || '', keyEventData + 132, 32);
  
        if ((function(a1, a2, a3) { dynCall_iiii.apply(null, [callbackfunc, a1, a2, a3]); })(eventTypeId, keyEventData, userData)) e.preventDefault();
      };
  
      var eventHandler = {
        target: findEventTarget(target),
        allowsDeferredCalls: true,
        eventTypeString: eventTypeString,
        callbackfunc: callbackfunc,
        handlerFunc: keyEventHandlerFunc,
        useCapture: useCapture
      };
      JSEvents.registerOrRemoveHandler(eventHandler);
    }
  function _emscripten_set_keydown_callback_on_thread(target, userData, useCapture, callbackfunc, targetThread) {
      registerKeyEventCallback(target, userData, useCapture, callbackfunc, 2, "keydown", targetThread);
      return 0;
    }

  function _emscripten_set_keypress_callback_on_thread(target, userData, useCapture, callbackfunc, targetThread) {
      registerKeyEventCallback(target, userData, useCapture, callbackfunc, 1, "keypress", targetThread);
      return 0;
    }

  function _emscripten_set_keyup_callback_on_thread(target, userData, useCapture, callbackfunc, targetThread) {
      registerKeyEventCallback(target, userData, useCapture, callbackfunc, 3, "keyup", targetThread);
      return 0;
    }

  var Browser={mainLoop:{scheduler:null,method:"",currentlyRunningMainloop:0,func:null,arg:0,timingMode:0,timingValue:0,currentFrameNumber:0,queue:[],pause:function() {
          Browser.mainLoop.scheduler = null;
          // Incrementing this signals the previous main loop that it's now become old, and it must return.
          Browser.mainLoop.currentlyRunningMainloop++;
        },resume:function() {
          Browser.mainLoop.currentlyRunningMainloop++;
          var timingMode = Browser.mainLoop.timingMode;
          var timingValue = Browser.mainLoop.timingValue;
          var func = Browser.mainLoop.func;
          Browser.mainLoop.func = null;
          // do not set timing and call scheduler, we will do it on the next lines
          setMainLoop(func, 0, false, Browser.mainLoop.arg, true);
          _emscripten_set_main_loop_timing(timingMode, timingValue);
          Browser.mainLoop.scheduler();
        },updateStatus:function() {
          if (Module['setStatus']) {
            var message = Module['statusMessage'] || 'Please wait...';
            var remaining = Browser.mainLoop.remainingBlockers;
            var expected = Browser.mainLoop.expectedBlockers;
            if (remaining) {
              if (remaining < expected) {
                Module['setStatus'](message + ' (' + (expected - remaining) + '/' + expected + ')');
              } else {
                Module['setStatus'](message);
              }
            } else {
              Module['setStatus']('');
            }
          }
        },runIter:function(func) {
          if (ABORT) return;
          if (Module['preMainLoop']) {
            var preRet = Module['preMainLoop']();
            if (preRet === false) {
              return; // |return false| skips a frame
            }
          }
          try {
            func();
          } catch (e) {
            if (e instanceof ExitStatus) {
              return;
            } else if (e == 'unwind') {
              return;
            } else {
              if (e && typeof e === 'object' && e.stack) err('exception thrown: ' + [e, e.stack]);
              throw e;
            }
          }
          if (Module['postMainLoop']) Module['postMainLoop']();
        }},isFullscreen:false,pointerLock:false,moduleContextCreatedCallbacks:[],workers:[],init:function() {
        if (!Module["preloadPlugins"]) Module["preloadPlugins"] = []; // needs to exist even in workers
  
        if (Browser.initted) return;
        Browser.initted = true;
  
        try {
          new Blob();
          Browser.hasBlobConstructor = true;
        } catch(e) {
          Browser.hasBlobConstructor = false;
          console.log("warning: no blob constructor, cannot create blobs with mimetypes");
        }
        Browser.BlobBuilder = typeof MozBlobBuilder != "undefined" ? MozBlobBuilder : (typeof WebKitBlobBuilder != "undefined" ? WebKitBlobBuilder : (!Browser.hasBlobConstructor ? console.log("warning: no BlobBuilder") : null));
        Browser.URLObject = typeof window != "undefined" ? (window.URL ? window.URL : window.webkitURL) : undefined;
        if (!Module.noImageDecoding && typeof Browser.URLObject === 'undefined') {
          console.log("warning: Browser does not support creating object URLs. Built-in browser image decoding will not be available.");
          Module.noImageDecoding = true;
        }
  
        // Support for plugins that can process preloaded files. You can add more of these to
        // your app by creating and appending to Module.preloadPlugins.
        //
        // Each plugin is asked if it can handle a file based on the file's name. If it can,
        // it is given the file's raw data. When it is done, it calls a callback with the file's
        // (possibly modified) data. For example, a plugin might decompress a file, or it
        // might create some side data structure for use later (like an Image element, etc.).
  
        var imagePlugin = {};
        imagePlugin['canHandle'] = function imagePlugin_canHandle(name) {
          return !Module.noImageDecoding && /\.(jpg|jpeg|png|bmp)$/i.test(name);
        };
        imagePlugin['handle'] = function imagePlugin_handle(byteArray, name, onload, onerror) {
          var b = null;
          if (Browser.hasBlobConstructor) {
            try {
              b = new Blob([byteArray], { type: Browser.getMimetype(name) });
              if (b.size !== byteArray.length) { // Safari bug #118630
                // Safari's Blob can only take an ArrayBuffer
                b = new Blob([(new Uint8Array(byteArray)).buffer], { type: Browser.getMimetype(name) });
              }
            } catch(e) {
              warnOnce('Blob constructor present but fails: ' + e + '; falling back to blob builder');
            }
          }
          if (!b) {
            var bb = new Browser.BlobBuilder();
            bb.append((new Uint8Array(byteArray)).buffer); // we need to pass a buffer, and must copy the array to get the right data range
            b = bb.getBlob();
          }
          var url = Browser.URLObject.createObjectURL(b);
          var img = new Image();
          img.onload = function img_onload() {
            assert(img.complete, 'Image ' + name + ' could not be decoded');
            var canvas = document.createElement('canvas');
            canvas.width = img.width;
            canvas.height = img.height;
            var ctx = canvas.getContext('2d');
            ctx.drawImage(img, 0, 0);
            Module["preloadedImages"][name] = canvas;
            Browser.URLObject.revokeObjectURL(url);
            if (onload) onload(byteArray);
          };
          img.onerror = function img_onerror(event) {
            console.log('Image ' + url + ' could not be decoded');
            if (onerror) onerror();
          };
          img.src = url;
        };
        Module['preloadPlugins'].push(imagePlugin);
  
        var audioPlugin = {};
        audioPlugin['canHandle'] = function audioPlugin_canHandle(name) {
          return !Module.noAudioDecoding && name.substr(-4) in { '.ogg': 1, '.wav': 1, '.mp3': 1 };
        };
        audioPlugin['handle'] = function audioPlugin_handle(byteArray, name, onload, onerror) {
          var done = false;
          function finish(audio) {
            if (done) return;
            done = true;
            Module["preloadedAudios"][name] = audio;
            if (onload) onload(byteArray);
          }
          function fail() {
            if (done) return;
            done = true;
            Module["preloadedAudios"][name] = new Audio(); // empty shim
            if (onerror) onerror();
          }
          if (Browser.hasBlobConstructor) {
            try {
              var b = new Blob([byteArray], { type: Browser.getMimetype(name) });
            } catch(e) {
              return fail();
            }
            var url = Browser.URLObject.createObjectURL(b); // XXX we never revoke this!
            var audio = new Audio();
            audio.addEventListener('canplaythrough', function() { finish(audio) }, false); // use addEventListener due to chromium bug 124926
            audio.onerror = function audio_onerror(event) {
              if (done) return;
              console.log('warning: browser could not fully decode audio ' + name + ', trying slower base64 approach');
              function encode64(data) {
                var BASE = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/';
                var PAD = '=';
                var ret = '';
                var leftchar = 0;
                var leftbits = 0;
                for (var i = 0; i < data.length; i++) {
                  leftchar = (leftchar << 8) | data[i];
                  leftbits += 8;
                  while (leftbits >= 6) {
                    var curr = (leftchar >> (leftbits-6)) & 0x3f;
                    leftbits -= 6;
                    ret += BASE[curr];
                  }
                }
                if (leftbits == 2) {
                  ret += BASE[(leftchar&3) << 4];
                  ret += PAD + PAD;
                } else if (leftbits == 4) {
                  ret += BASE[(leftchar&0xf) << 2];
                  ret += PAD;
                }
                return ret;
              }
              audio.src = 'data:audio/x-' + name.substr(-3) + ';base64,' + encode64(byteArray);
              finish(audio); // we don't wait for confirmation this worked - but it's worth trying
            };
            audio.src = url;
            // workaround for chrome bug 124926 - we do not always get oncanplaythrough or onerror
            Browser.safeSetTimeout(function() {
              finish(audio); // try to use it even though it is not necessarily ready to play
            }, 10000);
          } else {
            return fail();
          }
        };
        Module['preloadPlugins'].push(audioPlugin);
  
        // Canvas event setup
  
        function pointerLockChange() {
          Browser.pointerLock = document['pointerLockElement'] === Module['canvas'] ||
                                document['mozPointerLockElement'] === Module['canvas'] ||
                                document['webkitPointerLockElement'] === Module['canvas'] ||
                                document['msPointerLockElement'] === Module['canvas'];
        }
        var canvas = Module['canvas'];
        if (canvas) {
          // forced aspect ratio can be enabled by defining 'forcedAspectRatio' on Module
          // Module['forcedAspectRatio'] = 4 / 3;
  
          canvas.requestPointerLock = canvas['requestPointerLock'] ||
                                      canvas['mozRequestPointerLock'] ||
                                      canvas['webkitRequestPointerLock'] ||
                                      canvas['msRequestPointerLock'] ||
                                      function(){};
          canvas.exitPointerLock = document['exitPointerLock'] ||
                                   document['mozExitPointerLock'] ||
                                   document['webkitExitPointerLock'] ||
                                   document['msExitPointerLock'] ||
                                   function(){}; // no-op if function does not exist
          canvas.exitPointerLock = canvas.exitPointerLock.bind(document);
  
          document.addEventListener('pointerlockchange', pointerLockChange, false);
          document.addEventListener('mozpointerlockchange', pointerLockChange, false);
          document.addEventListener('webkitpointerlockchange', pointerLockChange, false);
          document.addEventListener('mspointerlockchange', pointerLockChange, false);
  
          if (Module['elementPointerLock']) {
            canvas.addEventListener("click", function(ev) {
              if (!Browser.pointerLock && Module['canvas'].requestPointerLock) {
                Module['canvas'].requestPointerLock();
                ev.preventDefault();
              }
            }, false);
          }
        }
      },createContext:function(canvas, useWebGL, setInModule, webGLContextAttributes) {
        if (useWebGL && Module.ctx && canvas == Module.canvas) return Module.ctx; // no need to recreate GL context if it's already been created for this canvas.
  
        var ctx;
        var contextHandle;
        if (useWebGL) {
          // For GLES2/desktop GL compatibility, adjust a few defaults to be different to WebGL defaults, so that they align better with the desktop defaults.
          var contextAttributes = {
            antialias: false,
            alpha: false,
            majorVersion: (typeof WebGL2RenderingContext !== 'undefined') ? 2 : 1,
          };
  
          if (webGLContextAttributes) {
            for (var attribute in webGLContextAttributes) {
              contextAttributes[attribute] = webGLContextAttributes[attribute];
            }
          }
  
          // This check of existence of GL is here to satisfy Closure compiler, which yells if variable GL is referenced below but GL object is not
          // actually compiled in because application is not doing any GL operations. TODO: Ideally if GL is not being used, this function
          // Browser.createContext() should not even be emitted.
          if (typeof GL !== 'undefined') {
            contextHandle = GL.createContext(canvas, contextAttributes);
            if (contextHandle) {
              ctx = GL.getContext(contextHandle).GLctx;
            }
          }
        } else {
          ctx = canvas.getContext('2d');
        }
  
        if (!ctx) return null;
  
        if (setInModule) {
          if (!useWebGL) assert(typeof GLctx === 'undefined', 'cannot set in module if GLctx is used, but we are a non-GL context that would replace it');
  
          Module.ctx = ctx;
          if (useWebGL) GL.makeContextCurrent(contextHandle);
          Module.useWebGL = useWebGL;
          Browser.moduleContextCreatedCallbacks.forEach(function(callback) { callback() });
          Browser.init();
        }
        return ctx;
      },destroyContext:function(canvas, useWebGL, setInModule) {},fullscreenHandlersInstalled:false,lockPointer:undefined,resizeCanvas:undefined,requestFullscreen:function(lockPointer, resizeCanvas) {
        Browser.lockPointer = lockPointer;
        Browser.resizeCanvas = resizeCanvas;
        if (typeof Browser.lockPointer === 'undefined') Browser.lockPointer = true;
        if (typeof Browser.resizeCanvas === 'undefined') Browser.resizeCanvas = false;
  
        var canvas = Module['canvas'];
        function fullscreenChange() {
          Browser.isFullscreen = false;
          var canvasContainer = canvas.parentNode;
          if ((document['fullscreenElement'] || document['mozFullScreenElement'] ||
               document['msFullscreenElement'] || document['webkitFullscreenElement'] ||
               document['webkitCurrentFullScreenElement']) === canvasContainer) {
            canvas.exitFullscreen = Browser.exitFullscreen;
            if (Browser.lockPointer) canvas.requestPointerLock();
            Browser.isFullscreen = true;
            if (Browser.resizeCanvas) {
              Browser.setFullscreenCanvasSize();
            } else {
              Browser.updateCanvasDimensions(canvas);
            }
          } else {
            // remove the full screen specific parent of the canvas again to restore the HTML structure from before going full screen
            canvasContainer.parentNode.insertBefore(canvas, canvasContainer);
            canvasContainer.parentNode.removeChild(canvasContainer);
  
            if (Browser.resizeCanvas) {
              Browser.setWindowedCanvasSize();
            } else {
              Browser.updateCanvasDimensions(canvas);
            }
          }
          if (Module['onFullScreen']) Module['onFullScreen'](Browser.isFullscreen);
          if (Module['onFullscreen']) Module['onFullscreen'](Browser.isFullscreen);
        }
  
        if (!Browser.fullscreenHandlersInstalled) {
          Browser.fullscreenHandlersInstalled = true;
          document.addEventListener('fullscreenchange', fullscreenChange, false);
          document.addEventListener('mozfullscreenchange', fullscreenChange, false);
          document.addEventListener('webkitfullscreenchange', fullscreenChange, false);
          document.addEventListener('MSFullscreenChange', fullscreenChange, false);
        }
  
        // create a new parent to ensure the canvas has no siblings. this allows browsers to optimize full screen performance when its parent is the full screen root
        var canvasContainer = document.createElement("div");
        canvas.parentNode.insertBefore(canvasContainer, canvas);
        canvasContainer.appendChild(canvas);
  
        // use parent of canvas as full screen root to allow aspect ratio correction (Firefox stretches the root to screen size)
        canvasContainer.requestFullscreen = canvasContainer['requestFullscreen'] ||
                                            canvasContainer['mozRequestFullScreen'] ||
                                            canvasContainer['msRequestFullscreen'] ||
                                           (canvasContainer['webkitRequestFullscreen'] ? function() { canvasContainer['webkitRequestFullscreen'](Element['ALLOW_KEYBOARD_INPUT']) } : null) ||
                                           (canvasContainer['webkitRequestFullScreen'] ? function() { canvasContainer['webkitRequestFullScreen'](Element['ALLOW_KEYBOARD_INPUT']) } : null);
  
        canvasContainer.requestFullscreen();
      },exitFullscreen:function() {
        // This is workaround for chrome. Trying to exit from fullscreen
        // not in fullscreen state will cause "TypeError: Document not active"
        // in chrome. See https://github.com/emscripten-core/emscripten/pull/8236
        if (!Browser.isFullscreen) {
          return false;
        }
  
        var CFS = document['exitFullscreen'] ||
                  document['cancelFullScreen'] ||
                  document['mozCancelFullScreen'] ||
                  document['msExitFullscreen'] ||
                  document['webkitCancelFullScreen'] ||
            (function() {});
        CFS.apply(document, []);
        return true;
      },nextRAF:0,fakeRequestAnimationFrame:function(func) {
        // try to keep 60fps between calls to here
        var now = Date.now();
        if (Browser.nextRAF === 0) {
          Browser.nextRAF = now + 1000/60;
        } else {
          while (now + 2 >= Browser.nextRAF) { // fudge a little, to avoid timer jitter causing us to do lots of delay:0
            Browser.nextRAF += 1000/60;
          }
        }
        var delay = Math.max(Browser.nextRAF - now, 0);
        setTimeout(func, delay);
      },requestAnimationFrame:function(func) {
        if (typeof requestAnimationFrame === 'function') {
          requestAnimationFrame(func);
          return;
        }
        var RAF = Browser.fakeRequestAnimationFrame;
        RAF(func);
      },safeRequestAnimationFrame:function(func) {
        return Browser.requestAnimationFrame(function() {
          if (ABORT) return;
          func();
        });
      },safeSetTimeout:function(func, timeout) {
        noExitRuntime = true;
        return setTimeout(function() {
          if (ABORT) return;
          func();
        }, timeout);
      },getMimetype:function(name) {
        return {
          'jpg': 'image/jpeg',
          'jpeg': 'image/jpeg',
          'png': 'image/png',
          'bmp': 'image/bmp',
          'ogg': 'audio/ogg',
          'wav': 'audio/wav',
          'mp3': 'audio/mpeg'
        }[name.substr(name.lastIndexOf('.')+1)];
      },getUserMedia:function(func) {
        if(!window.getUserMedia) {
          window.getUserMedia = navigator['getUserMedia'] ||
                                navigator['mozGetUserMedia'];
        }
        window.getUserMedia(func);
      },getMovementX:function(event) {
        return event['movementX'] ||
               event['mozMovementX'] ||
               event['webkitMovementX'] ||
               0;
      },getMovementY:function(event) {
        return event['movementY'] ||
               event['mozMovementY'] ||
               event['webkitMovementY'] ||
               0;
      },getMouseWheelDelta:function(event) {
        var delta = 0;
        switch (event.type) {
          case 'DOMMouseScroll':
            // 3 lines make up a step
            delta = event.detail / 3;
            break;
          case 'mousewheel':
            // 120 units make up a step
            delta = event.wheelDelta / 120;
            break;
          case 'wheel':
            delta = event.deltaY
            switch(event.deltaMode) {
              case 0:
                // DOM_DELTA_PIXEL: 100 pixels make up a step
                delta /= 100;
                break;
              case 1:
                // DOM_DELTA_LINE: 3 lines make up a step
                delta /= 3;
                break;
              case 2:
                // DOM_DELTA_PAGE: A page makes up 80 steps
                delta *= 80;
                break;
              default:
                throw 'unrecognized mouse wheel delta mode: ' + event.deltaMode;
            }
            break;
          default:
            throw 'unrecognized mouse wheel event: ' + event.type;
        }
        return delta;
      },mouseX:0,mouseY:0,mouseMovementX:0,mouseMovementY:0,touches:{},lastTouches:{},calculateMouseEvent:function(event) { // event should be mousemove, mousedown or mouseup
        if (Browser.pointerLock) {
          // When the pointer is locked, calculate the coordinates
          // based on the movement of the mouse.
          // Workaround for Firefox bug 764498
          if (event.type != 'mousemove' &&
              ('mozMovementX' in event)) {
            Browser.mouseMovementX = Browser.mouseMovementY = 0;
          } else {
            Browser.mouseMovementX = Browser.getMovementX(event);
            Browser.mouseMovementY = Browser.getMovementY(event);
          }
  
          // check if SDL is available
          if (typeof SDL != "undefined") {
            Browser.mouseX = SDL.mouseX + Browser.mouseMovementX;
            Browser.mouseY = SDL.mouseY + Browser.mouseMovementY;
          } else {
            // just add the mouse delta to the current absolut mouse position
            // FIXME: ideally this should be clamped against the canvas size and zero
            Browser.mouseX += Browser.mouseMovementX;
            Browser.mouseY += Browser.mouseMovementY;
          }
        } else {
          // Otherwise, calculate the movement based on the changes
          // in the coordinates.
          var rect = Module["canvas"].getBoundingClientRect();
          var cw = Module["canvas"].width;
          var ch = Module["canvas"].height;
  
          // Neither .scrollX or .pageXOffset are defined in a spec, but
          // we prefer .scrollX because it is currently in a spec draft.
          // (see: http://www.w3.org/TR/2013/WD-cssom-view-20131217/)
          var scrollX = ((typeof window.scrollX !== 'undefined') ? window.scrollX : window.pageXOffset);
          var scrollY = ((typeof window.scrollY !== 'undefined') ? window.scrollY : window.pageYOffset);
  
          if (event.type === 'touchstart' || event.type === 'touchend' || event.type === 'touchmove') {
            var touch = event.touch;
            if (touch === undefined) {
              return; // the "touch" property is only defined in SDL
  
            }
            var adjustedX = touch.pageX - (scrollX + rect.left);
            var adjustedY = touch.pageY - (scrollY + rect.top);
  
            adjustedX = adjustedX * (cw / rect.width);
            adjustedY = adjustedY * (ch / rect.height);
  
            var coords = { x: adjustedX, y: adjustedY };
  
            if (event.type === 'touchstart') {
              Browser.lastTouches[touch.identifier] = coords;
              Browser.touches[touch.identifier] = coords;
            } else if (event.type === 'touchend' || event.type === 'touchmove') {
              var last = Browser.touches[touch.identifier];
              if (!last) last = coords;
              Browser.lastTouches[touch.identifier] = last;
              Browser.touches[touch.identifier] = coords;
            }
            return;
          }
  
          var x = event.pageX - (scrollX + rect.left);
          var y = event.pageY - (scrollY + rect.top);
  
          // the canvas might be CSS-scaled compared to its backbuffer;
          // SDL-using content will want mouse coordinates in terms
          // of backbuffer units.
          x = x * (cw / rect.width);
          y = y * (ch / rect.height);
  
          Browser.mouseMovementX = x - Browser.mouseX;
          Browser.mouseMovementY = y - Browser.mouseY;
          Browser.mouseX = x;
          Browser.mouseY = y;
        }
      },asyncLoad:function(url, onload, onerror, noRunDep) {
        var dep = !noRunDep ? getUniqueRunDependency('al ' + url) : '';
        readAsync(url, function(arrayBuffer) {
          assert(arrayBuffer, 'Loading data file "' + url + '" failed (no arrayBuffer).');
          onload(new Uint8Array(arrayBuffer));
          if (dep) removeRunDependency(dep);
        }, function(event) {
          if (onerror) {
            onerror();
          } else {
            throw 'Loading data file "' + url + '" failed.';
          }
        });
        if (dep) addRunDependency(dep);
      },resizeListeners:[],updateResizeListeners:function() {
        var canvas = Module['canvas'];
        Browser.resizeListeners.forEach(function(listener) {
          listener(canvas.width, canvas.height);
        });
      },setCanvasSize:function(width, height, noUpdates) {
        var canvas = Module['canvas'];
        Browser.updateCanvasDimensions(canvas, width, height);
        if (!noUpdates) Browser.updateResizeListeners();
      },windowedWidth:0,windowedHeight:0,setFullscreenCanvasSize:function() {
        // check if SDL is available
        if (typeof SDL != "undefined") {
          var flags = HEAPU32[((SDL.screen)>>2)];
          flags = flags | 0x00800000; // set SDL_FULLSCREEN flag
          HEAP32[((SDL.screen)>>2)] = flags
        }
        Browser.updateCanvasDimensions(Module['canvas']);
        Browser.updateResizeListeners();
      },setWindowedCanvasSize:function() {
        // check if SDL is available
        if (typeof SDL != "undefined") {
          var flags = HEAPU32[((SDL.screen)>>2)];
          flags = flags & ~0x00800000; // clear SDL_FULLSCREEN flag
          HEAP32[((SDL.screen)>>2)] = flags
        }
        Browser.updateCanvasDimensions(Module['canvas']);
        Browser.updateResizeListeners();
      },updateCanvasDimensions:function(canvas, wNative, hNative) {
        if (wNative && hNative) {
          canvas.widthNative = wNative;
          canvas.heightNative = hNative;
        } else {
          wNative = canvas.widthNative;
          hNative = canvas.heightNative;
        }
        var w = wNative;
        var h = hNative;
        if (Module['forcedAspectRatio'] && Module['forcedAspectRatio'] > 0) {
          if (w/h < Module['forcedAspectRatio']) {
            w = Math.round(h * Module['forcedAspectRatio']);
          } else {
            h = Math.round(w / Module['forcedAspectRatio']);
          }
        }
        if (((document['fullscreenElement'] || document['mozFullScreenElement'] ||
             document['msFullscreenElement'] || document['webkitFullscreenElement'] ||
             document['webkitCurrentFullScreenElement']) === canvas.parentNode) && (typeof screen != 'undefined')) {
           var factor = Math.min(screen.width / w, screen.height / h);
           w = Math.round(w * factor);
           h = Math.round(h * factor);
        }
        if (Browser.resizeCanvas) {
          if (canvas.width  != w) canvas.width  = w;
          if (canvas.height != h) canvas.height = h;
          if (typeof canvas.style != 'undefined') {
            canvas.style.removeProperty( "width");
            canvas.style.removeProperty("height");
          }
        } else {
          if (canvas.width  != wNative) canvas.width  = wNative;
          if (canvas.height != hNative) canvas.height = hNative;
          if (typeof canvas.style != 'undefined') {
            if (w != wNative || h != hNative) {
              canvas.style.setProperty( "width", w + "px", "important");
              canvas.style.setProperty("height", h + "px", "important");
            } else {
              canvas.style.removeProperty( "width");
              canvas.style.removeProperty("height");
            }
          }
        }
      },wgetRequests:{},nextWgetRequestHandle:0,getNextWgetRequestHandle:function() {
        var handle = Browser.nextWgetRequestHandle;
        Browser.nextWgetRequestHandle++;
        return handle;
      }};
  function _emscripten_set_main_loop_timing(mode, value) {
      Browser.mainLoop.timingMode = mode;
      Browser.mainLoop.timingValue = value;
  
      if (!Browser.mainLoop.func) {
        return 1; // Return non-zero on failure, can't set timing mode when there is no main loop.
      }
  
      if (mode == 0 /*EM_TIMING_SETTIMEOUT*/) {
        Browser.mainLoop.scheduler = function Browser_mainLoop_scheduler_setTimeout() {
          var timeUntilNextTick = Math.max(0, Browser.mainLoop.tickStartTime + value - _emscripten_get_now())|0;
          setTimeout(Browser.mainLoop.runner, timeUntilNextTick); // doing this each time means that on exception, we stop
        };
        Browser.mainLoop.method = 'timeout';
      } else if (mode == 1 /*EM_TIMING_RAF*/) {
        Browser.mainLoop.scheduler = function Browser_mainLoop_scheduler_rAF() {
          Browser.requestAnimationFrame(Browser.mainLoop.runner);
        };
        Browser.mainLoop.method = 'rAF';
      } else if (mode == 2 /*EM_TIMING_SETIMMEDIATE*/) {
        if (typeof setImmediate === 'undefined') {
          // Emulate setImmediate. (note: not a complete polyfill, we don't emulate clearImmediate() to keep code size to minimum, since not needed)
          var setImmediates = [];
          var emscriptenMainLoopMessageId = 'setimmediate';
          var Browser_setImmediate_messageHandler = function(event) {
            // When called in current thread or Worker, the main loop ID is structured slightly different to accommodate for --proxy-to-worker runtime listening to Worker events,
            // so check for both cases.
            if (event.data === emscriptenMainLoopMessageId || event.data.target === emscriptenMainLoopMessageId) {
              event.stopPropagation();
              setImmediates.shift()();
            }
          }
          addEventListener("message", Browser_setImmediate_messageHandler, true);
          setImmediate = /** @type{function(function(): ?, ...?): number} */(function Browser_emulated_setImmediate(func) {
            setImmediates.push(func);
            if (ENVIRONMENT_IS_WORKER) {
              if (Module['setImmediates'] === undefined) Module['setImmediates'] = [];
              Module['setImmediates'].push(func);
              postMessage({target: emscriptenMainLoopMessageId}); // In --proxy-to-worker, route the message via proxyClient.js
            } else postMessage(emscriptenMainLoopMessageId, "*"); // On the main thread, can just send the message to itself.
          })
        }
        Browser.mainLoop.scheduler = function Browser_mainLoop_scheduler_setImmediate() {
          setImmediate(Browser.mainLoop.runner);
        };
        Browser.mainLoop.method = 'immediate';
      }
      return 0;
    }
  
  var _emscripten_get_now;if (ENVIRONMENT_IS_NODE) {
    _emscripten_get_now = function() {
      var t = process['hrtime']();
      return t[0] * 1e3 + t[1] / 1e6;
    };
  } else if (typeof dateNow !== 'undefined') {
    _emscripten_get_now = dateNow;
  } else _emscripten_get_now = function() { return performance.now(); }
  ;
  function setMainLoop(browserIterationFunc, fps, simulateInfiniteLoop, arg, noSetTiming) {
      noExitRuntime = true;
  
      assert(!Browser.mainLoop.func, 'emscripten_set_main_loop: there can only be one main loop function at once: call emscripten_cancel_main_loop to cancel the previous one before setting a new one with different parameters.');
  
      Browser.mainLoop.func = browserIterationFunc;
      Browser.mainLoop.arg = arg;
  
      var thisMainLoopId = Browser.mainLoop.currentlyRunningMainloop;
  
      Browser.mainLoop.runner = function Browser_mainLoop_runner() {
        if (ABORT) return;
        if (Browser.mainLoop.queue.length > 0) {
          var start = Date.now();
          var blocker = Browser.mainLoop.queue.shift();
          blocker.func(blocker.arg);
          if (Browser.mainLoop.remainingBlockers) {
            var remaining = Browser.mainLoop.remainingBlockers;
            var next = remaining%1 == 0 ? remaining-1 : Math.floor(remaining);
            if (blocker.counted) {
              Browser.mainLoop.remainingBlockers = next;
            } else {
              // not counted, but move the progress along a tiny bit
              next = next + 0.5; // do not steal all the next one's progress
              Browser.mainLoop.remainingBlockers = (8*remaining + next)/9;
            }
          }
          console.log('main loop blocker "' + blocker.name + '" took ' + (Date.now() - start) + ' ms'); //, left: ' + Browser.mainLoop.remainingBlockers);
          Browser.mainLoop.updateStatus();
  
          // catches pause/resume main loop from blocker execution
          if (thisMainLoopId < Browser.mainLoop.currentlyRunningMainloop) return;
  
          setTimeout(Browser.mainLoop.runner, 0);
          return;
        }
  
        // catch pauses from non-main loop sources
        if (thisMainLoopId < Browser.mainLoop.currentlyRunningMainloop) return;
  
        // Implement very basic swap interval control
        Browser.mainLoop.currentFrameNumber = Browser.mainLoop.currentFrameNumber + 1 | 0;
        if (Browser.mainLoop.timingMode == 1/*EM_TIMING_RAF*/ && Browser.mainLoop.timingValue > 1 && Browser.mainLoop.currentFrameNumber % Browser.mainLoop.timingValue != 0) {
          // Not the scheduled time to render this frame - skip.
          Browser.mainLoop.scheduler();
          return;
        } else if (Browser.mainLoop.timingMode == 0/*EM_TIMING_SETTIMEOUT*/) {
          Browser.mainLoop.tickStartTime = _emscripten_get_now();
        }
  
        // Signal GL rendering layer that processing of a new frame is about to start. This helps it optimize
        // VBO double-buffering and reduce GPU stalls.
  
        Browser.mainLoop.runIter(browserIterationFunc);
  
        // catch pauses from the main loop itself
        if (thisMainLoopId < Browser.mainLoop.currentlyRunningMainloop) return;
  
        // Queue new audio data. This is important to be right after the main loop invocation, so that we will immediately be able
        // to queue the newest produced audio samples.
        // TODO: Consider adding pre- and post- rAF callbacks so that GL.newRenderingFrameStarted() and SDL.audio.queueNewAudioData()
        //       do not need to be hardcoded into this function, but can be more generic.
        if (typeof SDL === 'object' && SDL.audio && SDL.audio.queueNewAudioData) SDL.audio.queueNewAudioData();
  
        Browser.mainLoop.scheduler();
      }
  
      if (!noSetTiming) {
        if (fps && fps > 0) _emscripten_set_main_loop_timing(0/*EM_TIMING_SETTIMEOUT*/, 1000.0 / fps);
        else _emscripten_set_main_loop_timing(1/*EM_TIMING_RAF*/, 1); // Do rAF by rendering each frame (no decimating)
  
        Browser.mainLoop.scheduler();
      }
  
      if (simulateInfiniteLoop) {
        throw 'unwind';
      }
    }
  function _emscripten_set_main_loop(func, fps, simulateInfiniteLoop) {
      var browserIterationFunc = (function() { dynCall_v.call(null, func); });
      setMainLoop(browserIterationFunc, fps, simulateInfiniteLoop);
    }

  function _emscripten_set_mousedown_callback_on_thread(target, userData, useCapture, callbackfunc, targetThread) {
      registerMouseEventCallback(target, userData, useCapture, callbackfunc, 5, "mousedown", targetThread);
      return 0;
    }

  function _emscripten_set_mouseenter_callback_on_thread(target, userData, useCapture, callbackfunc, targetThread) {
      registerMouseEventCallback(target, userData, useCapture, callbackfunc, 33, "mouseenter", targetThread);
      return 0;
    }

  function _emscripten_set_mouseleave_callback_on_thread(target, userData, useCapture, callbackfunc, targetThread) {
      registerMouseEventCallback(target, userData, useCapture, callbackfunc, 34, "mouseleave", targetThread);
      return 0;
    }

  function _emscripten_set_mousemove_callback_on_thread(target, userData, useCapture, callbackfunc, targetThread) {
      registerMouseEventCallback(target, userData, useCapture, callbackfunc, 8, "mousemove", targetThread);
      return 0;
    }

  function _emscripten_set_mouseup_callback_on_thread(target, userData, useCapture, callbackfunc, targetThread) {
      registerMouseEventCallback(target, userData, useCapture, callbackfunc, 6, "mouseup", targetThread);
      return 0;
    }

  function registerPointerlockChangeEventCallback(target, userData, useCapture, callbackfunc, eventTypeId, eventTypeString, targetThread) {
      if (!JSEvents.pointerlockChangeEvent) JSEvents.pointerlockChangeEvent = _malloc( 260 );
  
      var pointerlockChangeEventHandlerFunc = function(ev) {
        var e = ev || event;
  
        var pointerlockChangeEvent = JSEvents.pointerlockChangeEvent;
        fillPointerlockChangeEventData(pointerlockChangeEvent);
  
        if ((function(a1, a2, a3) { dynCall_iiii.apply(null, [callbackfunc, a1, a2, a3]); })(eventTypeId, pointerlockChangeEvent, userData)) e.preventDefault();
      };
  
      var eventHandler = {
        target: target,
        eventTypeString: eventTypeString,
        callbackfunc: callbackfunc,
        handlerFunc: pointerlockChangeEventHandlerFunc,
        useCapture: useCapture
      };
      JSEvents.registerOrRemoveHandler(eventHandler);
    }
  /** @suppress {missingProperties} */
  function _emscripten_set_pointerlockchange_callback_on_thread(target, userData, useCapture, callbackfunc, targetThread) {
      // TODO: Currently not supported in pthreads or in --proxy-to-worker mode. (In pthreads mode, document object is not defined)
      if (!document || !document.body || (!document.body.requestPointerLock && !document.body.mozRequestPointerLock && !document.body.webkitRequestPointerLock && !document.body.msRequestPointerLock)) {
        return -1;
      }
  
      target = findEventTarget(target);
      if (!target) return -4;
      registerPointerlockChangeEventCallback(target, userData, useCapture, callbackfunc, 20, "pointerlockchange", targetThread);
      registerPointerlockChangeEventCallback(target, userData, useCapture, callbackfunc, 20, "mozpointerlockchange", targetThread);
      registerPointerlockChangeEventCallback(target, userData, useCapture, callbackfunc, 20, "webkitpointerlockchange", targetThread);
      registerPointerlockChangeEventCallback(target, userData, useCapture, callbackfunc, 20, "mspointerlockchange", targetThread);
      return 0;
    }

  function registerUiEventCallback(target, userData, useCapture, callbackfunc, eventTypeId, eventTypeString, targetThread) {
      if (!JSEvents.uiEvent) JSEvents.uiEvent = _malloc( 36 );
  
      target = findEventTarget(target);
  
      var uiEventHandlerFunc = function(ev) {
        var e = ev || event;
        if (e.target != target) {
          // Never take ui events such as scroll via a 'bubbled' route, but always from the direct element that
          // was targeted. Otherwise e.g. if app logs a message in response to a page scroll, the Emscripten log
          // message box could cause to scroll, generating a new (bubbled) scroll message, causing a new log print,
          // causing a new scroll, etc..
          return;
        }
        var b = document.body; // Take document.body to a variable, Closure compiler does not outline access to it on its own.
        if (!b) {
          // During a page unload 'body' can be null, with "Cannot read property 'clientWidth' of null" being thrown
          return;
        }
        var uiEvent = JSEvents.uiEvent;
        HEAP32[((uiEvent)>>2)] = e.detail;
        HEAP32[(((uiEvent)+(4))>>2)] = b.clientWidth;
        HEAP32[(((uiEvent)+(8))>>2)] = b.clientHeight;
        HEAP32[(((uiEvent)+(12))>>2)] = innerWidth;
        HEAP32[(((uiEvent)+(16))>>2)] = innerHeight;
        HEAP32[(((uiEvent)+(20))>>2)] = outerWidth;
        HEAP32[(((uiEvent)+(24))>>2)] = outerHeight;
        HEAP32[(((uiEvent)+(28))>>2)] = pageXOffset;
        HEAP32[(((uiEvent)+(32))>>2)] = pageYOffset;
        if ((function(a1, a2, a3) { dynCall_iiii.apply(null, [callbackfunc, a1, a2, a3]); })(eventTypeId, uiEvent, userData)) e.preventDefault();
      };
  
      var eventHandler = {
        target: target,
        eventTypeString: eventTypeString,
        callbackfunc: callbackfunc,
        handlerFunc: uiEventHandlerFunc,
        useCapture: useCapture
      };
      JSEvents.registerOrRemoveHandler(eventHandler);
    }
  function _emscripten_set_resize_callback_on_thread(target, userData, useCapture, callbackfunc, targetThread) {
      registerUiEventCallback(target, userData, useCapture, callbackfunc, 10, "resize", targetThread);
      return 0;
    }

  function registerWheelEventCallback(target, userData, useCapture, callbackfunc, eventTypeId, eventTypeString, targetThread) {
      if (!JSEvents.wheelEvent) JSEvents.wheelEvent = _malloc( 96 );
  
      // The DOM Level 3 events spec event 'wheel'
      var wheelHandlerFunc = function(ev) {
        var e = ev || event;
        var wheelEvent = JSEvents.wheelEvent;
        fillMouseEventData(wheelEvent, e, target);
        HEAPF64[(((wheelEvent)+(64))>>3)] = e["deltaX"];
        HEAPF64[(((wheelEvent)+(72))>>3)] = e["deltaY"];
        HEAPF64[(((wheelEvent)+(80))>>3)] = e["deltaZ"];
        HEAP32[(((wheelEvent)+(88))>>2)] = e["deltaMode"];
        if ((function(a1, a2, a3) { dynCall_iiii.apply(null, [callbackfunc, a1, a2, a3]); })(eventTypeId, wheelEvent, userData)) e.preventDefault();
      };
  
      var eventHandler = {
        target: target,
        allowsDeferredCalls: true,
        eventTypeString: eventTypeString,
        callbackfunc: callbackfunc,
        handlerFunc: wheelHandlerFunc,
        useCapture: useCapture
      };
      JSEvents.registerOrRemoveHandler(eventHandler);
    }
  function _emscripten_set_wheel_callback_on_thread(target, userData, useCapture, callbackfunc, targetThread) {
      target = findEventTarget(target);
      if (typeof target.onwheel !== 'undefined') {
        registerWheelEventCallback(target, userData, useCapture, callbackfunc, 9, "wheel", targetThread);
        return 0;
      } else {
        return -1;
      }
    }

  function _emscripten_sleep(ms) {
      Asyncify.handleSleep(function(wakeUp) {
        Browser.safeSetTimeout(wakeUp, ms);
      });
    }

  function __webgl_enable_ANGLE_instanced_arrays(ctx) {
      // Extension available in WebGL 1 from Firefox 26 and Google Chrome 30 onwards. Core feature in WebGL 2.
      var ext = ctx.getExtension('ANGLE_instanced_arrays');
      if (ext) {
        ctx['vertexAttribDivisor'] = function(index, divisor) { ext['vertexAttribDivisorANGLE'](index, divisor); };
        ctx['drawArraysInstanced'] = function(mode, first, count, primcount) { ext['drawArraysInstancedANGLE'](mode, first, count, primcount); };
        ctx['drawElementsInstanced'] = function(mode, count, type, indices, primcount) { ext['drawElementsInstancedANGLE'](mode, count, type, indices, primcount); };
        return 1;
      }
    }
  
  function __webgl_enable_OES_vertex_array_object(ctx) {
      // Extension available in WebGL 1 from Firefox 25 and WebKit 536.28/desktop Safari 6.0.3 onwards. Core feature in WebGL 2.
      var ext = ctx.getExtension('OES_vertex_array_object');
      if (ext) {
        ctx['createVertexArray'] = function() { return ext['createVertexArrayOES'](); };
        ctx['deleteVertexArray'] = function(vao) { ext['deleteVertexArrayOES'](vao); };
        ctx['bindVertexArray'] = function(vao) { ext['bindVertexArrayOES'](vao); };
        ctx['isVertexArray'] = function(vao) { return ext['isVertexArrayOES'](vao); };
        return 1;
      }
    }
  
  function __webgl_enable_WEBGL_draw_buffers(ctx) {
      // Extension available in WebGL 1 from Firefox 28 onwards. Core feature in WebGL 2.
      var ext = ctx.getExtension('WEBGL_draw_buffers');
      if (ext) {
        ctx['drawBuffers'] = function(n, bufs) { ext['drawBuffersWEBGL'](n, bufs); };
        return 1;
      }
    }
  
  function __webgl_enable_WEBGL_draw_instanced_base_vertex_base_instance(ctx) {
      // Closure is expected to be allowed to minify the '.dibvbi' property, so not accessing it quoted.
      return !!(ctx.dibvbi = ctx.getExtension('WEBGL_draw_instanced_base_vertex_base_instance'));
    }
  
  function __webgl_enable_WEBGL_multi_draw_instanced_base_vertex_base_instance(ctx) {
      // Closure is expected to be allowed to minify the '.mdibvbi' property, so not accessing it quoted.
      return !!(ctx.mdibvbi = ctx.getExtension('WEBGL_multi_draw_instanced_base_vertex_base_instance'));
    }
  
  function __webgl_enable_WEBGL_multi_draw(ctx) {
      // Closure is expected to be allowed to minify the '.multiDrawWebgl' property, so not accessing it quoted.
      return !!(ctx.multiDrawWebgl = ctx.getExtension('WEBGL_multi_draw'));
    }
  var GL={counter:1,buffers:[],programs:[],framebuffers:[],renderbuffers:[],textures:[],uniforms:[],shaders:[],vaos:[],contexts:[],offscreenCanvases:{},timerQueriesEXT:[],queries:[],samplers:[],transformFeedbacks:[],syncs:[],programInfos:{},stringCache:{},stringiCache:{},unpackAlignment:4,recordError:function recordError(errorCode) {
        if (!GL.lastError) {
          GL.lastError = errorCode;
        }
      },getNewId:function(table) {
        var ret = GL.counter++;
        for (var i = table.length; i < ret; i++) {
          table[i] = null;
        }
        return ret;
      },getSource:function(shader, count, string, length) {
        var source = '';
        for (var i = 0; i < count; ++i) {
          var len = length ? HEAP32[(((length)+(i*4))>>2)] : -1;
          source += UTF8ToString(HEAP32[(((string)+(i*4))>>2)], len < 0 ? undefined : len);
        }
        return source;
      },createContext:function(canvas, webGLContextAttributes) {
  
        var ctx = 
          (webGLContextAttributes.majorVersion > 1)
          ?
            canvas.getContext("webgl2", webGLContextAttributes)
          :
          (canvas.getContext("webgl", webGLContextAttributes)
            // https://caniuse.com/#feat=webgl
            );
  
        if (!ctx) return 0;
  
        var handle = GL.registerContext(ctx, webGLContextAttributes);
  
        return handle;
      },registerContext:function(ctx, webGLContextAttributes) {
        // without pthreads a context is just an integer ID
        var handle = GL.getNewId(GL.contexts);
  
        var context = {
          handle: handle,
          attributes: webGLContextAttributes,
          version: webGLContextAttributes.majorVersion,
          GLctx: ctx
        };
  
        // Store the created context object so that we can access the context given a canvas without having to pass the parameters again.
        if (ctx.canvas) ctx.canvas.GLctxObject = context;
        GL.contexts[handle] = context;
        if (typeof webGLContextAttributes.enableExtensionsByDefault === 'undefined' || webGLContextAttributes.enableExtensionsByDefault) {
          GL.initExtensions(context);
        }
  
        return handle;
      },makeContextCurrent:function(contextHandle) {
  
        GL.currentContext = GL.contexts[contextHandle]; // Active Emscripten GL layer context object.
        Module.ctx = GLctx = GL.currentContext && GL.currentContext.GLctx; // Active WebGL context object.
        return !(contextHandle && !GLctx);
      },getContext:function(contextHandle) {
        return GL.contexts[contextHandle];
      },deleteContext:function(contextHandle) {
        if (GL.currentContext === GL.contexts[contextHandle]) GL.currentContext = null;
        if (typeof JSEvents === 'object') JSEvents.removeAllHandlersOnTarget(GL.contexts[contextHandle].GLctx.canvas); // Release all JS event handlers on the DOM element that the GL context is associated with since the context is now deleted.
        if (GL.contexts[contextHandle] && GL.contexts[contextHandle].GLctx.canvas) GL.contexts[contextHandle].GLctx.canvas.GLctxObject = undefined; // Make sure the canvas object no longer refers to the context object so there are no GC surprises.
        GL.contexts[contextHandle] = null;
      },initExtensions:function(context) {
        // If this function is called without a specific context object, init the extensions of the currently active context.
        if (!context) context = GL.currentContext;
  
        if (context.initExtensionsDone) return;
        context.initExtensionsDone = true;
  
        var GLctx = context.GLctx;
  
        // Detect the presence of a few extensions manually, this GL interop layer itself will need to know if they exist.
  
        // Extensions that are only available in WebGL 1 (the calls will be no-ops if called on a WebGL 2 context active)
        __webgl_enable_ANGLE_instanced_arrays(GLctx);
        __webgl_enable_OES_vertex_array_object(GLctx);
        __webgl_enable_WEBGL_draw_buffers(GLctx);
        // Extensions that are available from WebGL >= 2 (no-op if called on a WebGL 1 context active)
        __webgl_enable_WEBGL_draw_instanced_base_vertex_base_instance(GLctx);
        __webgl_enable_WEBGL_multi_draw_instanced_base_vertex_base_instance(GLctx);
  
        GLctx.disjointTimerQueryExt = GLctx.getExtension("EXT_disjoint_timer_query");
        __webgl_enable_WEBGL_multi_draw(GLctx);
  
        // .getSupportedExtensions() can return null if context is lost, so coerce to empty array.
        var exts = GLctx.getSupportedExtensions() || [];
        exts.forEach(function(ext) {
          // WEBGL_lose_context, WEBGL_debug_renderer_info and WEBGL_debug_shaders are not enabled by default.
          if (ext.indexOf('lose_context') < 0 && ext.indexOf('debug') < 0) {
            // Call .getExtension() to enable that extension permanently.
            GLctx.getExtension(ext);
          }
        });
      },populateUniformTable:function(program) {
        var p = GL.programs[program];
        var ptable = GL.programInfos[program] = {
          uniforms: {},
          maxUniformLength: 0, // This is eagerly computed below, since we already enumerate all uniforms anyway.
          maxAttributeLength: -1, // This is lazily computed and cached, computed when/if first asked, "-1" meaning not computed yet.
          maxUniformBlockNameLength: -1 // Lazily computed as well
        };
  
        var utable = ptable.uniforms;
        // A program's uniform table maps the string name of an uniform to an integer location of that uniform.
        // The global GL.uniforms map maps integer locations to WebGLUniformLocations.
        var numUniforms = GLctx.getProgramParameter(p, 0x8B86/*GL_ACTIVE_UNIFORMS*/);
        for (var i = 0; i < numUniforms; ++i) {
          var u = GLctx.getActiveUniform(p, i);
  
          var name = u.name;
          ptable.maxUniformLength = Math.max(ptable.maxUniformLength, name.length+1);
  
          // If we are dealing with an array, e.g. vec4 foo[3], strip off the array index part to canonicalize that "foo", "foo[]",
          // and "foo[0]" will mean the same. Loop below will populate foo[1] and foo[2].
          if (name.slice(-1) == ']') {
            name = name.slice(0, name.lastIndexOf('['));
          }
  
          // Optimize memory usage slightly: If we have an array of uniforms, e.g. 'vec3 colors[3];', then
          // only store the string 'colors' in utable, and 'colors[0]', 'colors[1]' and 'colors[2]' will be parsed as 'colors'+i.
          // Note that for the GL.uniforms table, we still need to fetch the all WebGLUniformLocations for all the indices.
          var loc = GLctx.getUniformLocation(p, name);
          if (loc) {
            var id = GL.getNewId(GL.uniforms);
            utable[name] = [u.size, id];
            GL.uniforms[id] = loc;
  
            for (var j = 1; j < u.size; ++j) {
              var n = name + '['+j+']';
              loc = GLctx.getUniformLocation(p, n);
              id = GL.getNewId(GL.uniforms);
  
              GL.uniforms[id] = loc;
            }
          }
        }
      }};
  
  var __emscripten_webgl_power_preferences=['default', 'low-power', 'high-performance'];
  function _emscripten_webgl_do_create_context(target, attributes) {
      var a = attributes >> 2;
      var powerPreference = HEAP32[a + (24>>2)];
      var contextAttributes = {
        'alpha': !!HEAP32[a + (0>>2)],
        'depth': !!HEAP32[a + (4>>2)],
        'stencil': !!HEAP32[a + (8>>2)],
        'antialias': !!HEAP32[a + (12>>2)],
        'premultipliedAlpha': !!HEAP32[a + (16>>2)],
        'preserveDrawingBuffer': !!HEAP32[a + (20>>2)],
        'powerPreference': __emscripten_webgl_power_preferences[powerPreference],
        'failIfMajorPerformanceCaveat': !!HEAP32[a + (28>>2)],
        // The following are not predefined WebGL context attributes in the WebGL specification, so the property names can be minified by Closure.
        majorVersion: HEAP32[a + (32>>2)],
        minorVersion: HEAP32[a + (36>>2)],
        enableExtensionsByDefault: HEAP32[a + (40>>2)],
        explicitSwapControl: HEAP32[a + (44>>2)],
        proxyContextToMainThread: HEAP32[a + (48>>2)],
        renderViaOffscreenBackBuffer: HEAP32[a + (52>>2)]
      };
  
      var canvas = findCanvasEventTarget(target);
  
      if (!canvas) {
        return 0;
      }
  
      if (contextAttributes.explicitSwapControl) {
        return 0;
      }
  
      var contextHandle = GL.createContext(canvas, contextAttributes);
      return contextHandle;
    }
  function _emscripten_webgl_create_context(a0,a1
  ) {
  return _emscripten_webgl_do_create_context(a0,a1);
  }

  function _emscripten_webgl_init_context_attributes(attributes) {
      var a = attributes >> 2;
      for(var i = 0; i < (56>>2); ++i) {
        HEAP32[a+i] = 0;
      }
  
      HEAP32[a + (0>>2)] =
      HEAP32[a + (4>>2)] = 
      HEAP32[a + (12>>2)] = 
      HEAP32[a + (16>>2)] = 
      HEAP32[a + (32>>2)] = 
      HEAP32[a + (40>>2)] = 1;
  
    }

  function _emscripten_webgl_make_context_current(contextHandle) {
      var success = GL.makeContextCurrent(contextHandle);
      return success ? 0 : -5;
    }

  function flush_NO_FILESYSTEM() {
      // flush anything remaining in the buffers during shutdown
      if (typeof _fflush !== 'undefined') _fflush(0);
      var buffers = SYSCALLS.buffers;
      if (buffers[1].length) SYSCALLS.printChar(1, 10);
      if (buffers[2].length) SYSCALLS.printChar(2, 10);
    }
  
  var SYSCALLS={mappings:{},buffers:[null,[],[]],printChar:function(stream, curr) {
        var buffer = SYSCALLS.buffers[stream];
        if (curr === 0 || curr === 10) {
          (stream === 1 ? out : err)(UTF8ArrayToString(buffer, 0));
          buffer.length = 0;
        } else {
          buffer.push(curr);
        }
      },varargs:undefined,get:function() {
        SYSCALLS.varargs += 4;
        var ret = HEAP32[(((SYSCALLS.varargs)-(4))>>2)];
        return ret;
      },getStr:function(ptr) {
        var ret = UTF8ToString(ptr);
        return ret;
      },get64:function(low, high) {
        return low;
      }};
  function _fd_write(fd, iov, iovcnt, pnum) {
      // hack to support printf in SYSCALLS_REQUIRE_FILESYSTEM=0
      var num = 0;
      for (var i = 0; i < iovcnt; i++) {
        var ptr = HEAP32[(((iov)+(i*8))>>2)];
        var len = HEAP32[(((iov)+(i*8 + 4))>>2)];
        for (var j = 0; j < len; j++) {
          SYSCALLS.printChar(fd, HEAPU8[ptr+j]);
        }
        num += len;
      }
      HEAP32[((pnum)>>2)] = num
      return 0;
    }

  function _glActiveTexture(x0) { GLctx['activeTexture'](x0) }

  function _glAttachShader(program, shader) {
      GLctx.attachShader(GL.programs[program],
                              GL.shaders[shader]);
    }

  function _glBindBuffer(target, buffer) {
  
      if (target == 0x88EB /*GL_PIXEL_PACK_BUFFER*/) {
        // In WebGL 2 glReadPixels entry point, we need to use a different WebGL 2 API function call when a buffer is bound to
        // GL_PIXEL_PACK_BUFFER_BINDING point, so must keep track whether that binding point is non-null to know what is
        // the proper API function to call.
        GLctx.currentPixelPackBufferBinding = buffer;
      } else if (target == 0x88EC /*GL_PIXEL_UNPACK_BUFFER*/) {
        // In WebGL 2 gl(Compressed)Tex(Sub)Image[23]D entry points, we need to
        // use a different WebGL 2 API function call when a buffer is bound to
        // GL_PIXEL_UNPACK_BUFFER_BINDING point, so must keep track whether that
        // binding point is non-null to know what is the proper API function to
        // call.
        GLctx.currentPixelUnpackBufferBinding = buffer;
      }
      GLctx.bindBuffer(target, GL.buffers[buffer]);
    }

  function _glBindBufferRange(target, index, buffer, offset, ptrsize) {
      GLctx['bindBufferRange'](target, index, GL.buffers[buffer], offset, ptrsize);
    }

  function _glBindFramebuffer(target, framebuffer) {
  
      GLctx.bindFramebuffer(target, GL.framebuffers[framebuffer]);
  
    }

  function _glBindRenderbuffer(target, renderbuffer) {
      GLctx.bindRenderbuffer(target, GL.renderbuffers[renderbuffer]);
    }

  function _glBindTexture(target, texture) {
      GLctx.bindTexture(target, GL.textures[texture]);
    }

  function _glBindVertexArray(vao) {
      GLctx['bindVertexArray'](GL.vaos[vao]);
    }

  function _glBlendEquation(x0) { GLctx['blendEquation'](x0) }

  function _glBlendFunc(x0, x1) { GLctx['blendFunc'](x0, x1) }

  function _glBufferData(target, size, data, usage) {
  
      if (GL.currentContext.version >= 2) { // WebGL 2 provides new garbage-free entry points to call to WebGL. Use those always when possible.
        if (data) {
          GLctx.bufferData(target, HEAPU8, usage, data, size);
        } else {
          GLctx.bufferData(target, size, usage);
        }
      } else {
        // N.b. here first form specifies a heap subarray, second form an integer size, so the ?: code here is polymorphic. It is advised to avoid
        // randomly mixing both uses in calling code, to avoid any potential JS engine JIT issues.
        GLctx.bufferData(target, data ? HEAPU8.subarray(data, data+size) : size, usage);
      }
    }

  function _glBufferSubData(target, offset, size, data) {
      if (GL.currentContext.version >= 2) { // WebGL 2 provides new garbage-free entry points to call to WebGL. Use those always when possible.
        GLctx.bufferSubData(target, offset, HEAPU8, data, size);
        return;
      }
      GLctx.bufferSubData(target, offset, HEAPU8.subarray(data, data+size));
    }

  function _glClear(x0) { GLctx['clear'](x0) }

  function _glClearColor(x0, x1, x2, x3) { GLctx['clearColor'](x0, x1, x2, x3) }

  function _glCompileShader(shader) {
      GLctx.compileShader(GL.shaders[shader]);
    }

  function _glCreateProgram() {
      var id = GL.getNewId(GL.programs);
      var program = GLctx.createProgram();
      program.name = id;
      GL.programs[id] = program;
      return id;
    }

  function _glCreateShader(shaderType) {
      var id = GL.getNewId(GL.shaders);
      GL.shaders[id] = GLctx.createShader(shaderType);
      return id;
    }

  function _glCullFace(x0) { GLctx['cullFace'](x0) }

  function _glDeleteProgram(id) {
      if (!id) return;
      var program = GL.programs[id];
      if (!program) { // glDeleteProgram actually signals an error when deleting a nonexisting object, unlike some other GL delete functions.
        GL.recordError(0x501 /* GL_INVALID_VALUE */);
        return;
      }
      GLctx.deleteProgram(program);
      program.name = 0;
      GL.programs[id] = null;
      GL.programInfos[id] = null;
    }

  function _glDeleteShader(id) {
      if (!id) return;
      var shader = GL.shaders[id];
      if (!shader) { // glDeleteShader actually signals an error when deleting a nonexisting object, unlike some other GL delete functions.
        GL.recordError(0x501 /* GL_INVALID_VALUE */);
        return;
      }
      GLctx.deleteShader(shader);
      GL.shaders[id] = null;
    }

  function _glDepthFunc(x0) { GLctx['depthFunc'](x0) }

  function _glDisable(x0) { GLctx['disable'](x0) }

  function _glDrawArrays(mode, first, count) {
  
      GLctx.drawArrays(mode, first, count);
  
    }

  function _glDrawArraysInstanced(mode, first, count, primcount) {
      GLctx['drawArraysInstanced'](mode, first, count, primcount);
    }

  function _glDrawElements(mode, count, type, indices) {
  
      GLctx.drawElements(mode, count, type, indices);
  
    }

  function _glDrawElementsInstanced(mode, count, type, indices, primcount) {
      GLctx['drawElementsInstanced'](mode, count, type, indices, primcount);
    }

  function _glEnable(x0) { GLctx['enable'](x0) }

  function _glEnableVertexAttribArray(index) {
      GLctx.enableVertexAttribArray(index);
    }

  function _glFramebufferTexture2D(target, attachment, textarget, texture, level) {
      GLctx.framebufferTexture2D(target, attachment, textarget,
                                      GL.textures[texture], level);
    }

  function _glFrontFace(x0) { GLctx['frontFace'](x0) }

  function __glGenObject(n, buffers, createFunction, objectTable
      ) {
      for (var i = 0; i < n; i++) {
        var buffer = GLctx[createFunction]();
        var id = buffer && GL.getNewId(objectTable);
        if (buffer) {
          buffer.name = id;
          objectTable[id] = buffer;
        } else {
          GL.recordError(0x502 /* GL_INVALID_OPERATION */);
        }
        HEAP32[(((buffers)+(i*4))>>2)] = id;
      }
    }
  function _glGenBuffers(n, buffers) {
      __glGenObject(n, buffers, 'createBuffer', GL.buffers
        );
    }

  function _glGenFramebuffers(n, ids) {
      __glGenObject(n, ids, 'createFramebuffer', GL.framebuffers
        );
    }

  function _glGenTextures(n, textures) {
      __glGenObject(n, textures, 'createTexture', GL.textures
        );
    }

  function _glGenVertexArrays(n, arrays) {
      __glGenObject(n, arrays, 'createVertexArray', GL.vaos
        );
    }

  function _glGenerateMipmap(x0) { GLctx['generateMipmap'](x0) }

  function writeI53ToI64(ptr, num) {
      HEAPU32[ptr>>2] = num;
      HEAPU32[ptr+4>>2] = (num - HEAPU32[ptr>>2])/4294967296;
    }
  function emscriptenWebGLGet(name_, p, type) {
      // Guard against user passing a null pointer.
      // Note that GLES2 spec does not say anything about how passing a null pointer should be treated.
      // Testing on desktop core GL 3, the application crashes on glGetIntegerv to a null pointer, but
      // better to report an error instead of doing anything random.
      if (!p) {
        GL.recordError(0x501 /* GL_INVALID_VALUE */);
        return;
      }
      var ret = undefined;
      switch(name_) { // Handle a few trivial GLES values
        case 0x8DFA: // GL_SHADER_COMPILER
          ret = 1;
          break;
        case 0x8DF8: // GL_SHADER_BINARY_FORMATS
          if (type != 0 && type != 1) {
            GL.recordError(0x500); // GL_INVALID_ENUM
          }
          return; // Do not write anything to the out pointer, since no binary formats are supported.
        case 0x87FE: // GL_NUM_PROGRAM_BINARY_FORMATS
        case 0x8DF9: // GL_NUM_SHADER_BINARY_FORMATS
          ret = 0;
          break;
        case 0x86A2: // GL_NUM_COMPRESSED_TEXTURE_FORMATS
          // WebGL doesn't have GL_NUM_COMPRESSED_TEXTURE_FORMATS (it's obsolete since GL_COMPRESSED_TEXTURE_FORMATS returns a JS array that can be queried for length),
          // so implement it ourselves to allow C++ GLES2 code get the length.
          var formats = GLctx.getParameter(0x86A3 /*GL_COMPRESSED_TEXTURE_FORMATS*/);
          ret = formats ? formats.length : 0;
          break;
        case 0x821D: // GL_NUM_EXTENSIONS
          if (GL.currentContext.version < 2) {
            GL.recordError(0x502 /* GL_INVALID_OPERATION */); // Calling GLES3/WebGL2 function with a GLES2/WebGL1 context
            return;
          }
          // .getSupportedExtensions() can return null if context is lost, so coerce to empty array.
          var exts = GLctx.getSupportedExtensions() || [];
          ret = 2 * exts.length; // each extension is duplicated, first in unprefixed WebGL form, and then a second time with "GL_" prefix.
          break;
        case 0x821B: // GL_MAJOR_VERSION
        case 0x821C: // GL_MINOR_VERSION
          if (GL.currentContext.version < 2) {
            GL.recordError(0x500); // GL_INVALID_ENUM
            return;
          }
          ret = name_ == 0x821B ? 3 : 0; // return version 3.0
          break;
      }
  
      if (ret === undefined) {
        var result = GLctx.getParameter(name_);
        switch (typeof(result)) {
          case "number":
            ret = result;
            break;
          case "boolean":
            ret = result ? 1 : 0;
            break;
          case "string":
            GL.recordError(0x500); // GL_INVALID_ENUM
            return;
          case "object":
            if (result === null) {
              // null is a valid result for some (e.g., which buffer is bound - perhaps nothing is bound), but otherwise
              // can mean an invalid name_, which we need to report as an error
              switch(name_) {
                case 0x8894: // ARRAY_BUFFER_BINDING
                case 0x8B8D: // CURRENT_PROGRAM
                case 0x8895: // ELEMENT_ARRAY_BUFFER_BINDING
                case 0x8CA6: // FRAMEBUFFER_BINDING or DRAW_FRAMEBUFFER_BINDING
                case 0x8CA7: // RENDERBUFFER_BINDING
                case 0x8069: // TEXTURE_BINDING_2D
                case 0x85B5: // WebGL 2 GL_VERTEX_ARRAY_BINDING, or WebGL 1 extension OES_vertex_array_object GL_VERTEX_ARRAY_BINDING_OES
                case 0x8F36: // COPY_READ_BUFFER_BINDING or COPY_READ_BUFFER
                case 0x8F37: // COPY_WRITE_BUFFER_BINDING or COPY_WRITE_BUFFER
                case 0x88ED: // PIXEL_PACK_BUFFER_BINDING
                case 0x88EF: // PIXEL_UNPACK_BUFFER_BINDING
                case 0x8CAA: // READ_FRAMEBUFFER_BINDING
                case 0x8919: // SAMPLER_BINDING
                case 0x8C1D: // TEXTURE_BINDING_2D_ARRAY
                case 0x806A: // TEXTURE_BINDING_3D
                case 0x8E25: // TRANSFORM_FEEDBACK_BINDING
                case 0x8C8F: // TRANSFORM_FEEDBACK_BUFFER_BINDING
                case 0x8A28: // UNIFORM_BUFFER_BINDING
                case 0x8514: { // TEXTURE_BINDING_CUBE_MAP
                  ret = 0;
                  break;
                }
                default: {
                  GL.recordError(0x500); // GL_INVALID_ENUM
                  return;
                }
              }
            } else if (result instanceof Float32Array ||
                       result instanceof Uint32Array ||
                       result instanceof Int32Array ||
                       result instanceof Array) {
              for (var i = 0; i < result.length; ++i) {
                switch (type) {
                  case 0: HEAP32[(((p)+(i*4))>>2)] = result[i]; break;
                  case 2: HEAPF32[(((p)+(i*4))>>2)] = result[i]; break;
                  case 4: HEAP8[(((p)+(i))>>0)] = result[i] ? 1 : 0; break;
                }
              }
              return;
            } else {
              try {
                ret = result.name | 0;
              } catch(e) {
                GL.recordError(0x500); // GL_INVALID_ENUM
                err('GL_INVALID_ENUM in glGet' + type + 'v: Unknown object returned from WebGL getParameter(' + name_ + ')! (error: ' + e + ')');
                return;
              }
            }
            break;
          default:
            GL.recordError(0x500); // GL_INVALID_ENUM
            err('GL_INVALID_ENUM in glGet' + type + 'v: Native code calling glGet' + type + 'v(' + name_ + ') and it returns ' + result + ' of type ' + typeof(result) + '!');
            return;
        }
      }
  
      switch (type) {
        case 1: writeI53ToI64(p, ret); break;
        case 0: HEAP32[((p)>>2)] = ret; break;
        case 2:   HEAPF32[((p)>>2)] = ret; break;
        case 4: HEAP8[((p)>>0)] = ret ? 1 : 0; break;
      }
    }
  function _glGetIntegerv(name_, p) {
      emscriptenWebGLGet(name_, p, 0);
    }

  function _glGetProgramInfoLog(program, maxLength, length, infoLog) {
      var log = GLctx.getProgramInfoLog(GL.programs[program]);
      if (log === null) log = '(unknown error)';
      var numBytesWrittenExclNull = (maxLength > 0 && infoLog) ? stringToUTF8(log, infoLog, maxLength) : 0;
      if (length) HEAP32[((length)>>2)] = numBytesWrittenExclNull;
    }

  function _glGetProgramiv(program, pname, p) {
      if (!p) {
        // GLES2 specification does not specify how to behave if p is a null pointer. Since calling this function does not make sense
        // if p == null, issue a GL error to notify user about it.
        GL.recordError(0x501 /* GL_INVALID_VALUE */);
        return;
      }
  
      if (program >= GL.counter) {
        GL.recordError(0x501 /* GL_INVALID_VALUE */);
        return;
      }
  
      var ptable = GL.programInfos[program];
      if (!ptable) {
        GL.recordError(0x502 /* GL_INVALID_OPERATION */);
        return;
      }
  
      if (pname == 0x8B84) { // GL_INFO_LOG_LENGTH
        var log = GLctx.getProgramInfoLog(GL.programs[program]);
        if (log === null) log = '(unknown error)';
        HEAP32[((p)>>2)] = log.length + 1;
      } else if (pname == 0x8B87 /* GL_ACTIVE_UNIFORM_MAX_LENGTH */) {
        HEAP32[((p)>>2)] = ptable.maxUniformLength;
      } else if (pname == 0x8B8A /* GL_ACTIVE_ATTRIBUTE_MAX_LENGTH */) {
        if (ptable.maxAttributeLength == -1) {
          program = GL.programs[program];
          var numAttribs = GLctx.getProgramParameter(program, 0x8B89/*GL_ACTIVE_ATTRIBUTES*/);
          ptable.maxAttributeLength = 0; // Spec says if there are no active attribs, 0 must be returned.
          for (var i = 0; i < numAttribs; ++i) {
            var activeAttrib = GLctx.getActiveAttrib(program, i);
            ptable.maxAttributeLength = Math.max(ptable.maxAttributeLength, activeAttrib.name.length+1);
          }
        }
        HEAP32[((p)>>2)] = ptable.maxAttributeLength;
      } else if (pname == 0x8A35 /* GL_ACTIVE_UNIFORM_BLOCK_MAX_NAME_LENGTH */) {
        if (ptable.maxUniformBlockNameLength == -1) {
          program = GL.programs[program];
          var numBlocks = GLctx.getProgramParameter(program, 0x8A36/*GL_ACTIVE_UNIFORM_BLOCKS*/);
          ptable.maxUniformBlockNameLength = 0;
          for (var i = 0; i < numBlocks; ++i) {
            var activeBlockName = GLctx.getActiveUniformBlockName(program, i);
            ptable.maxUniformBlockNameLength = Math.max(ptable.maxUniformBlockNameLength, activeBlockName.length+1);
          }
        }
        HEAP32[((p)>>2)] = ptable.maxUniformBlockNameLength;
      } else {
        HEAP32[((p)>>2)] = GLctx.getProgramParameter(GL.programs[program], pname);
      }
    }

  function _glGetShaderInfoLog(shader, maxLength, length, infoLog) {
      var log = GLctx.getShaderInfoLog(GL.shaders[shader]);
      if (log === null) log = '(unknown error)';
      var numBytesWrittenExclNull = (maxLength > 0 && infoLog) ? stringToUTF8(log, infoLog, maxLength) : 0;
      if (length) HEAP32[((length)>>2)] = numBytesWrittenExclNull;
    }

  function _glGetShaderiv(shader, pname, p) {
      if (!p) {
        // GLES2 specification does not specify how to behave if p is a null pointer. Since calling this function does not make sense
        // if p == null, issue a GL error to notify user about it.
        GL.recordError(0x501 /* GL_INVALID_VALUE */);
        return;
      }
      if (pname == 0x8B84) { // GL_INFO_LOG_LENGTH
        var log = GLctx.getShaderInfoLog(GL.shaders[shader]);
        if (log === null) log = '(unknown error)';
        // The GLES2 specification says that if the shader has an empty info log,
        // a value of 0 is returned. Otherwise the log has a null char appended.
        // (An empty string is falsey, so we can just check that instead of
        // looking at log.length.)
        var logLength = log ? log.length + 1 : 0;
        HEAP32[((p)>>2)] = logLength;
      } else if (pname == 0x8B88) { // GL_SHADER_SOURCE_LENGTH
        var source = GLctx.getShaderSource(GL.shaders[shader]);
        // source may be a null, or the empty string, both of which are falsey
        // values that we report a 0 length for.
        var sourceLength = source ? source.length + 1 : 0;
        HEAP32[((p)>>2)] = sourceLength;
      } else {
        HEAP32[((p)>>2)] = GLctx.getShaderParameter(GL.shaders[shader], pname);
      }
    }

  function _glGetUniformBlockIndex(program, uniformBlockName) {
      return GLctx['getUniformBlockIndex'](GL.programs[program], UTF8ToString(uniformBlockName));
    }

  function _glGetUniformLocation(program, name) {
      name = UTF8ToString(name);
  
      var arrayIndex = 0;
      // If user passed an array accessor "[index]", parse the array index off the accessor.
      if (name[name.length - 1] == ']') {
        var leftBrace = name.lastIndexOf('[');
        arrayIndex = name[leftBrace+1] != ']' ? jstoi_q(name.slice(leftBrace + 1)) : 0; // "index]", parseInt will ignore the ']' at the end; but treat "foo[]" as "foo[0]"
        name = name.slice(0, leftBrace);
      }
  
      var uniformInfo = GL.programInfos[program] && GL.programInfos[program].uniforms[name]; // returns pair [ dimension_of_uniform_array, uniform_location ]
      if (uniformInfo && arrayIndex >= 0 && arrayIndex < uniformInfo[0]) { // Check if user asked for an out-of-bounds element, i.e. for 'vec4 colors[3];' user could ask for 'colors[10]' which should return -1.
        return uniformInfo[1] + arrayIndex;
      } else {
        return -1;
      }
    }

  function _glLinkProgram(program) {
      GLctx.linkProgram(GL.programs[program]);
      GL.populateUniformTable(program);
    }

  function _glScissor(x0, x1, x2, x3) { GLctx['scissor'](x0, x1, x2, x3) }

  function _glShaderSource(shader, count, string, length) {
      var source = GL.getSource(shader, count, string, length);
  
      GLctx.shaderSource(GL.shaders[shader], source);
    }

  function _glStencilFunc(x0, x1, x2) { GLctx['stencilFunc'](x0, x1, x2) }

  function _glStencilMask(x0) { GLctx['stencilMask'](x0) }

  function _glStencilOp(x0, x1, x2) { GLctx['stencilOp'](x0, x1, x2) }

  function computeUnpackAlignedImageSize(width, height, sizePerPixel, alignment) {
      function roundedToNextMultipleOf(x, y) {
        return (x + y - 1) & -y;
      }
      var plainRowSize = width * sizePerPixel;
      var alignedRowSize = roundedToNextMultipleOf(plainRowSize, alignment);
      return height * alignedRowSize;
    }
  
  function __colorChannelsInGlTextureFormat(format) {
      // Micro-optimizations for size: map format to size by subtracting smallest enum value (0x1902) from all values first.
      // Also omit the most common size value (1) from the list, which is assumed by formats not on the list.
      var colorChannels = {
        // 0x1902 /* GL_DEPTH_COMPONENT */ - 0x1902: 1,
        // 0x1906 /* GL_ALPHA */ - 0x1902: 1,
        5: 3,
        6: 4,
        // 0x1909 /* GL_LUMINANCE */ - 0x1902: 1,
        8: 2,
        29502: 3,
        29504: 4,
        // 0x1903 /* GL_RED */ - 0x1902: 1,
        26917: 2,
        26918: 2,
        // 0x8D94 /* GL_RED_INTEGER */ - 0x1902: 1,
        29846: 3,
        29847: 4
      };
      return colorChannels[format - 0x1902]||1;
    }
  
  function heapObjectForWebGLType(type) {
      // Micro-optimization for size: Subtract lowest GL enum number (0x1400/* GL_BYTE */) from type to compare
      // smaller values for the heap, for shorter generated code size.
      // Also the type HEAPU16 is not tested for explicitly, but any unrecognized type will return out HEAPU16.
      // (since most types are HEAPU16)
      type -= 0x1400;
      if (type == 0) return HEAP8;
  
      if (type == 1) return HEAPU8;
  
      if (type == 2) return HEAP16;
  
      if (type == 4) return HEAP32;
  
      if (type == 6) return HEAPF32;
  
      if (type == 5
        || type == 28922
        || type == 28520
        || type == 30779
        || type == 30782
        )
        return HEAPU32;
  
      return HEAPU16;
    }
  
  function heapAccessShiftForWebGLHeap(heap) {
      return 31 - Math.clz32(heap.BYTES_PER_ELEMENT);
    }
  function emscriptenWebGLGetTexPixelData(type, format, width, height, pixels, internalFormat) {
      var heap = heapObjectForWebGLType(type);
      var shift = heapAccessShiftForWebGLHeap(heap);
      var byteSize = 1<<shift;
      var sizePerPixel = __colorChannelsInGlTextureFormat(format) * byteSize;
      var bytes = computeUnpackAlignedImageSize(width, height, sizePerPixel, GL.unpackAlignment);
      return heap.subarray(pixels >> shift, pixels + bytes >> shift);
    }
  function _glTexImage2D(target, level, internalFormat, width, height, border, format, type, pixels) {
      if (GL.currentContext.version >= 2) {
        // WebGL 2 provides new garbage-free entry points to call to WebGL. Use those always when possible.
        if (GLctx.currentPixelUnpackBufferBinding) {
          GLctx.texImage2D(target, level, internalFormat, width, height, border, format, type, pixels);
        } else if (pixels) {
          var heap = heapObjectForWebGLType(type);
          GLctx.texImage2D(target, level, internalFormat, width, height, border, format, type, heap, pixels >> heapAccessShiftForWebGLHeap(heap));
        } else {
          GLctx.texImage2D(target, level, internalFormat, width, height, border, format, type, null);
        }
        return;
      }
      GLctx.texImage2D(target, level, internalFormat, width, height, border, format, type, pixels ? emscriptenWebGLGetTexPixelData(type, format, width, height, pixels, internalFormat) : null);
    }

  function _glTexParameteri(x0, x1, x2) { GLctx['texParameteri'](x0, x1, x2) }

  function _glUniform1f(location, v0) {
      GLctx.uniform1f(GL.uniforms[location], v0);
    }

  function _glUniform1i(location, v0) {
      GLctx.uniform1i(GL.uniforms[location], v0);
    }

  function _glUniform2f(location, v0, v1) {
      GLctx.uniform2f(GL.uniforms[location], v0, v1);
    }

  function _glUniform3f(location, v0, v1, v2) {
      GLctx.uniform3f(GL.uniforms[location], v0, v1, v2);
    }

  function _glUniform4f(location, v0, v1, v2, v3) {
      GLctx.uniform4f(GL.uniforms[location], v0, v1, v2, v3);
    }

  function _glUniformBlockBinding(program, uniformBlockIndex, uniformBlockBinding) {
      program = GL.programs[program];
  
      GLctx['uniformBlockBinding'](program, uniformBlockIndex, uniformBlockBinding);
    }

  var miniTempWebGLFloatBuffers=[];
  function _glUniformMatrix4fv(location, count, transpose, value) {
  
      if (GL.currentContext.version >= 2) { // WebGL 2 provides new garbage-free entry points to call to WebGL. Use those always when possible.
        GLctx.uniformMatrix4fv(GL.uniforms[location], !!transpose, HEAPF32, value>>2, count*16);
        return;
      }
  
      if (count <= 18) {
        // avoid allocation when uploading few enough uniforms
        var view = miniTempWebGLFloatBuffers[16*count-1];
        // hoist the heap out of the loop for size and for pthreads+growth.
        var heap = HEAPF32;
        value >>= 2;
        for (var i = 0; i < 16 * count; i += 16) {
          var dst = value + i;
          view[i] = heap[dst];
          view[i + 1] = heap[dst + 1];
          view[i + 2] = heap[dst + 2];
          view[i + 3] = heap[dst + 3];
          view[i + 4] = heap[dst + 4];
          view[i + 5] = heap[dst + 5];
          view[i + 6] = heap[dst + 6];
          view[i + 7] = heap[dst + 7];
          view[i + 8] = heap[dst + 8];
          view[i + 9] = heap[dst + 9];
          view[i + 10] = heap[dst + 10];
          view[i + 11] = heap[dst + 11];
          view[i + 12] = heap[dst + 12];
          view[i + 13] = heap[dst + 13];
          view[i + 14] = heap[dst + 14];
          view[i + 15] = heap[dst + 15];
        }
      } else
      {
        var view = HEAPF32.subarray((value)>>2, (value+count*64)>>2);
      }
      GLctx.uniformMatrix4fv(GL.uniforms[location], !!transpose, view);
    }

  function _glUseProgram(program) {
      GLctx.useProgram(GL.programs[program]);
    }

  function _glVertexAttribDivisor(index, divisor) {
      GLctx['vertexAttribDivisor'](index, divisor);
    }

  function _glVertexAttribIPointer(index, size, type, stride, ptr) {
      GLctx['vertexAttribIPointer'](index, size, type, stride, ptr);
    }

  function _glVertexAttribPointer(index, size, type, normalized, stride, ptr) {
      GLctx.vertexAttribPointer(index, size, type, !!normalized, stride, ptr);
    }

  function _glViewport(x0, x1, x2, x3) { GLctx['viewport'](x0, x1, x2, x3) }

  function _pthread_create() {
      return 6;
    }

  function _pthread_join() {
      return 28;
    }

  function _setTempRet0($i) {
      setTempRet0(($i) | 0);
    }

  var readAsmConstArgsArray=[];
  function readAsmConstArgs(sigPtr, buf) {
      readAsmConstArgsArray.length = 0;
      var ch;
      // Most arguments are i32s, so shift the buffer pointer so it is a plain
      // index into HEAP32.
      buf >>= 2;
      while (ch = HEAPU8[sigPtr++]) {
        // A double takes two 32-bit slots, and must also be aligned - the backend
        // will emit padding to avoid that.
        var double = ch < 105;
        if (double && (buf & 1)) buf++;
        readAsmConstArgsArray.push(double ? HEAPF64[buf++ >> 1] : HEAP32[buf]);
        ++buf;
      }
      return readAsmConstArgsArray;
    }

  function runAndAbortIfError(func) {
      try {
        return func();
      } catch (e) {
        abort(e);
      }
    }
  var Asyncify={State:{Normal:0,Unwinding:1,Rewinding:2},state:0,StackSize:4096,currData:null,handleSleepReturnValue:0,exportCallStack:[],callStackNameToId:{},callStackIdToName:{},callStackId:0,afterUnwind:null,asyncFinalizers:[],sleepCallbacks:[],getCallStackId:function(funcName) {
        var id = Asyncify.callStackNameToId[funcName];
        if (id === undefined) {
          id = Asyncify.callStackId++;
          Asyncify.callStackNameToId[funcName] = id;
          Asyncify.callStackIdToName[id] = funcName;
        }
        return id;
      },instrumentWasmExports:function(exports) {
        var ret = {};
        for (var x in exports) {
          (function(x) {
            var original = exports[x];
            if (typeof original === 'function') {
              ret[x] = function() {
                Asyncify.exportCallStack.push(x);
                try {
                  return original.apply(null, arguments);
                } finally {
                  if (ABORT) return;
                  var y = Asyncify.exportCallStack.pop();
                  assert(y === x);
                  Asyncify.maybeStopUnwind();
                }
              };
            } else {
              ret[x] = original;
            }
          })(x);
        }
        return ret;
      },maybeStopUnwind:function() {
        if (Asyncify.currData &&
            Asyncify.state === Asyncify.State.Unwinding &&
            Asyncify.exportCallStack.length === 0) {
          // We just finished unwinding.
          Asyncify.state = Asyncify.State.Normal;
          runAndAbortIfError(Module['_asyncify_stop_unwind']);
          if (typeof Fibers !== 'undefined') {
            Fibers.trampoline();
          }
          if (Asyncify.afterUnwind) {
            Asyncify.afterUnwind();
            Asyncify.afterUnwind = null;
          }
        }
      },allocateData:function() {
        // An asyncify data structure has three fields:
        //  0  current stack pos
        //  4  max stack pos
        //  8  id of function at bottom of the call stack (callStackIdToName[id] == name of js function)
        //
        // The Asyncify ABI only interprets the first two fields, the rest is for the runtime.
        // We also embed a stack in the same memory region here, right next to the structure.
        // This struct is also defined as asyncify_data_t in emscripten/fiber.h
        var ptr = _malloc(12 + Asyncify.StackSize);
        Asyncify.setDataHeader(ptr, ptr + 12, Asyncify.StackSize);
        Asyncify.setDataRewindFunc(ptr);
        return ptr;
      },setDataHeader:function(ptr, stack, stackSize) {
        HEAP32[((ptr)>>2)] = stack;
        HEAP32[(((ptr)+(4))>>2)] = stack + stackSize;
      },setDataRewindFunc:function(ptr) {
        var bottomOfCallStack = Asyncify.exportCallStack[0];
        var rewindId = Asyncify.getCallStackId(bottomOfCallStack);
        HEAP32[(((ptr)+(8))>>2)] = rewindId;
      },getDataRewindFunc:function(ptr) {
        var id = HEAP32[(((ptr)+(8))>>2)];
        var name = Asyncify.callStackIdToName[id];
        var func = Module['asm'][name];
        return func;
      },handleSleep:function(startAsync) {
        if (ABORT) return;
        noExitRuntime = true;
        if (Asyncify.state === Asyncify.State.Normal) {
          // Prepare to sleep. Call startAsync, and see what happens:
          // if the code decided to call our callback synchronously,
          // then no async operation was in fact begun, and we don't
          // need to do anything.
          var reachedCallback = false;
          var reachedAfterCallback = false;
          startAsync(function(handleSleepReturnValue) {
            if (ABORT) return;
            Asyncify.handleSleepReturnValue = handleSleepReturnValue || 0;
            reachedCallback = true;
            if (!reachedAfterCallback) {
              // We are happening synchronously, so no need for async.
              return;
            }
            Asyncify.state = Asyncify.State.Rewinding;
            runAndAbortIfError(function() { Module['_asyncify_start_rewind'](Asyncify.currData) });
            if (typeof Browser !== 'undefined' && Browser.mainLoop.func) {
              Browser.mainLoop.resume();
            }
            var start = Asyncify.getDataRewindFunc(Asyncify.currData);
            var asyncWasmReturnValue = start();
            if (!Asyncify.currData) {
              // All asynchronous execution has finished.
              // `asyncWasmReturnValue` now contains the final
              // return value of the exported async WASM function.
              //
              // Note: `asyncWasmReturnValue` is distinct from
              // `Asyncify.handleSleepReturnValue`.
              // `Asyncify.handleSleepReturnValue` contains the return
              // value of the last C function to have executed
              // `Asyncify.handleSleep()`, where as `asyncWasmReturnValue`
              // contains the return value of the exported WASM function
              // that may have called C functions that
              // call `Asyncify.handleSleep()`.
              var asyncFinalizers = Asyncify.asyncFinalizers;
              Asyncify.asyncFinalizers = [];
              asyncFinalizers.forEach(function(func) {
                func(asyncWasmReturnValue);
              });
            }
          });
          reachedAfterCallback = true;
          if (!reachedCallback) {
            // A true async operation was begun; start a sleep.
            Asyncify.state = Asyncify.State.Unwinding;
            // TODO: reuse, don't alloc/free every sleep
            Asyncify.currData = Asyncify.allocateData();
            runAndAbortIfError(function() { Module['_asyncify_start_unwind'](Asyncify.currData) });
            if (typeof Browser !== 'undefined' && Browser.mainLoop.func) {
              Browser.mainLoop.pause();
            }
          }
        } else if (Asyncify.state === Asyncify.State.Rewinding) {
          // Stop a resume.
          Asyncify.state = Asyncify.State.Normal;
          runAndAbortIfError(Module['_asyncify_stop_rewind']);
          _free(Asyncify.currData);
          Asyncify.currData = null;
          // Call all sleep callbacks now that the sleep-resume is all done.
          Asyncify.sleepCallbacks.forEach(function(func) {
            func();
          });
        } else {
          abort('invalid state: ' + Asyncify.state);
        }
        return Asyncify.handleSleepReturnValue;
      },handleAsync:function(startAsync) {
        return Asyncify.handleSleep(function(wakeUp) {
          // TODO: add error handling as a second param when handleSleep implements it.
          startAsync().then(wakeUp);
        });
      }};
Module["requestFullscreen"] = function Module_requestFullscreen(lockPointer, resizeCanvas) { Browser.requestFullscreen(lockPointer, resizeCanvas) };
  Module["requestAnimationFrame"] = function Module_requestAnimationFrame(func) { Browser.requestAnimationFrame(func) };
  Module["setCanvasSize"] = function Module_setCanvasSize(width, height, noUpdates) { Browser.setCanvasSize(width, height, noUpdates) };
  Module["pauseMainLoop"] = function Module_pauseMainLoop() { Browser.mainLoop.pause() };
  Module["resumeMainLoop"] = function Module_resumeMainLoop() { Browser.mainLoop.resume() };
  Module["getUserMedia"] = function Module_getUserMedia() { Browser.getUserMedia() }
  Module["createContext"] = function Module_createContext(canvas, useWebGL, setInModule, webGLContextAttributes) { return Browser.createContext(canvas, useWebGL, setInModule, webGLContextAttributes) };
var GLctx;;
var miniTempWebGLFloatBuffersStorage = new Float32Array(288);
  for (/**@suppress{duplicate}*/var i = 0; i < 288; ++i) {
  miniTempWebGLFloatBuffers[i] = miniTempWebGLFloatBuffersStorage.subarray(0, i+1);
  }
  ;
var ASSERTIONS = false;



/** @type {function(string, boolean=, number=)} */
function intArrayFromString(stringy, dontAddNull, length) {
  var len = length > 0 ? length : lengthBytesUTF8(stringy)+1;
  var u8array = new Array(len);
  var numBytesWritten = stringToUTF8Array(stringy, u8array, 0, u8array.length);
  if (dontAddNull) u8array.length = numBytesWritten;
  return u8array;
}

function intArrayToString(array) {
  var ret = [];
  for (var i = 0; i < array.length; i++) {
    var chr = array[i];
    if (chr > 0xFF) {
      if (ASSERTIONS) {
        assert(false, 'Character code ' + chr + ' (' + String.fromCharCode(chr) + ')  at offset ' + i + ' not in 0x00-0xFF.');
      }
      chr &= 0xFF;
    }
    ret.push(String.fromCharCode(chr));
  }
  return ret.join('');
}


var asmLibraryArg = {
  "__assert_fail": ___assert_fail,
  "emscripten_asm_const_int": _emscripten_asm_const_int,
  "emscripten_enter_soft_fullscreen": _emscripten_enter_soft_fullscreen,
  "emscripten_exit_fullscreen": _emscripten_exit_fullscreen,
  "emscripten_get_element_css_size": _emscripten_get_element_css_size,
  "emscripten_get_pointerlock_status": _emscripten_get_pointerlock_status,
  "emscripten_memcpy_big": _emscripten_memcpy_big,
  "emscripten_performance_now": _emscripten_performance_now,
  "emscripten_resize_heap": _emscripten_resize_heap,
  "emscripten_set_canvas_element_size": _emscripten_set_canvas_element_size,
  "emscripten_set_click_callback_on_thread": _emscripten_set_click_callback_on_thread,
  "emscripten_set_fullscreenchange_callback_on_thread": _emscripten_set_fullscreenchange_callback_on_thread,
  "emscripten_set_keydown_callback_on_thread": _emscripten_set_keydown_callback_on_thread,
  "emscripten_set_keypress_callback_on_thread": _emscripten_set_keypress_callback_on_thread,
  "emscripten_set_keyup_callback_on_thread": _emscripten_set_keyup_callback_on_thread,
  "emscripten_set_main_loop": _emscripten_set_main_loop,
  "emscripten_set_mousedown_callback_on_thread": _emscripten_set_mousedown_callback_on_thread,
  "emscripten_set_mouseenter_callback_on_thread": _emscripten_set_mouseenter_callback_on_thread,
  "emscripten_set_mouseleave_callback_on_thread": _emscripten_set_mouseleave_callback_on_thread,
  "emscripten_set_mousemove_callback_on_thread": _emscripten_set_mousemove_callback_on_thread,
  "emscripten_set_mouseup_callback_on_thread": _emscripten_set_mouseup_callback_on_thread,
  "emscripten_set_pointerlockchange_callback_on_thread": _emscripten_set_pointerlockchange_callback_on_thread,
  "emscripten_set_resize_callback_on_thread": _emscripten_set_resize_callback_on_thread,
  "emscripten_set_wheel_callback_on_thread": _emscripten_set_wheel_callback_on_thread,
  "emscripten_sleep": _emscripten_sleep,
  "emscripten_webgl_create_context": _emscripten_webgl_create_context,
  "emscripten_webgl_init_context_attributes": _emscripten_webgl_init_context_attributes,
  "emscripten_webgl_make_context_current": _emscripten_webgl_make_context_current,
  "fd_write": _fd_write,
  "glActiveTexture": _glActiveTexture,
  "glAttachShader": _glAttachShader,
  "glBindBuffer": _glBindBuffer,
  "glBindBufferRange": _glBindBufferRange,
  "glBindFramebuffer": _glBindFramebuffer,
  "glBindRenderbuffer": _glBindRenderbuffer,
  "glBindTexture": _glBindTexture,
  "glBindVertexArray": _glBindVertexArray,
  "glBlendEquation": _glBlendEquation,
  "glBlendFunc": _glBlendFunc,
  "glBufferData": _glBufferData,
  "glBufferSubData": _glBufferSubData,
  "glClear": _glClear,
  "glClearColor": _glClearColor,
  "glCompileShader": _glCompileShader,
  "glCreateProgram": _glCreateProgram,
  "glCreateShader": _glCreateShader,
  "glCullFace": _glCullFace,
  "glDeleteProgram": _glDeleteProgram,
  "glDeleteShader": _glDeleteShader,
  "glDepthFunc": _glDepthFunc,
  "glDisable": _glDisable,
  "glDrawArrays": _glDrawArrays,
  "glDrawArraysInstanced": _glDrawArraysInstanced,
  "glDrawElements": _glDrawElements,
  "glDrawElementsInstanced": _glDrawElementsInstanced,
  "glEnable": _glEnable,
  "glEnableVertexAttribArray": _glEnableVertexAttribArray,
  "glFramebufferTexture2D": _glFramebufferTexture2D,
  "glFrontFace": _glFrontFace,
  "glGenBuffers": _glGenBuffers,
  "glGenFramebuffers": _glGenFramebuffers,
  "glGenTextures": _glGenTextures,
  "glGenVertexArrays": _glGenVertexArrays,
  "glGenerateMipmap": _glGenerateMipmap,
  "glGetIntegerv": _glGetIntegerv,
  "glGetProgramInfoLog": _glGetProgramInfoLog,
  "glGetProgramiv": _glGetProgramiv,
  "glGetShaderInfoLog": _glGetShaderInfoLog,
  "glGetShaderiv": _glGetShaderiv,
  "glGetUniformBlockIndex": _glGetUniformBlockIndex,
  "glGetUniformLocation": _glGetUniformLocation,
  "glLinkProgram": _glLinkProgram,
  "glScissor": _glScissor,
  "glShaderSource": _glShaderSource,
  "glStencilFunc": _glStencilFunc,
  "glStencilMask": _glStencilMask,
  "glStencilOp": _glStencilOp,
  "glTexImage2D": _glTexImage2D,
  "glTexParameteri": _glTexParameteri,
  "glUniform1f": _glUniform1f,
  "glUniform1i": _glUniform1i,
  "glUniform2f": _glUniform2f,
  "glUniform3f": _glUniform3f,
  "glUniform4f": _glUniform4f,
  "glUniformBlockBinding": _glUniformBlockBinding,
  "glUniformMatrix4fv": _glUniformMatrix4fv,
  "glUseProgram": _glUseProgram,
  "glVertexAttribDivisor": _glVertexAttribDivisor,
  "glVertexAttribIPointer": _glVertexAttribIPointer,
  "glVertexAttribPointer": _glVertexAttribPointer,
  "glViewport": _glViewport,
  "pthread_create": _pthread_create,
  "pthread_join": _pthread_join,
  "setTempRet0": _setTempRet0
};
var asm = createWasm();
/** @type {function(...*):?} */
var ___wasm_call_ctors = Module["___wasm_call_ctors"] = function() {
  return (___wasm_call_ctors = Module["___wasm_call_ctors"] = Module["asm"]["__wasm_call_ctors"]).apply(null, arguments);
};

/** @type {function(...*):?} */
var _malloc = Module["_malloc"] = function() {
  return (_malloc = Module["_malloc"] = Module["asm"]["malloc"]).apply(null, arguments);
};

/** @type {function(...*):?} */
var _free = Module["_free"] = function() {
  return (_free = Module["_free"] = Module["asm"]["free"]).apply(null, arguments);
};

/** @type {function(...*):?} */
var _main = Module["_main"] = function() {
  return (_main = Module["_main"] = Module["asm"]["main"]).apply(null, arguments);
};

/** @type {function(...*):?} */
var ___errno_location = Module["___errno_location"] = function() {
  return (___errno_location = Module["___errno_location"] = Module["asm"]["__errno_location"]).apply(null, arguments);
};

/** @type {function(...*):?} */
var _ma_device_process_pcm_frames_capture__webaudio = Module["_ma_device_process_pcm_frames_capture__webaudio"] = function() {
  return (_ma_device_process_pcm_frames_capture__webaudio = Module["_ma_device_process_pcm_frames_capture__webaudio"] = Module["asm"]["ma_device_process_pcm_frames_capture__webaudio"]).apply(null, arguments);
};

/** @type {function(...*):?} */
var _ma_device_process_pcm_frames_playback__webaudio = Module["_ma_device_process_pcm_frames_playback__webaudio"] = function() {
  return (_ma_device_process_pcm_frames_playback__webaudio = Module["_ma_device_process_pcm_frames_playback__webaudio"] = Module["asm"]["ma_device_process_pcm_frames_playback__webaudio"]).apply(null, arguments);
};

/** @type {function(...*):?} */
var _emscripten_main_thread_process_queued_calls = Module["_emscripten_main_thread_process_queued_calls"] = function() {
  return (_emscripten_main_thread_process_queued_calls = Module["_emscripten_main_thread_process_queued_calls"] = Module["asm"]["emscripten_main_thread_process_queued_calls"]).apply(null, arguments);
};

/** @type {function(...*):?} */
var _emscripten_stack_get_base = Module["_emscripten_stack_get_base"] = function() {
  return (_emscripten_stack_get_base = Module["_emscripten_stack_get_base"] = Module["asm"]["emscripten_stack_get_base"]).apply(null, arguments);
};

/** @type {function(...*):?} */
var _emscripten_stack_get_end = Module["_emscripten_stack_get_end"] = function() {
  return (_emscripten_stack_get_end = Module["_emscripten_stack_get_end"] = Module["asm"]["emscripten_stack_get_end"]).apply(null, arguments);
};

/** @type {function(...*):?} */
var stackSave = Module["stackSave"] = function() {
  return (stackSave = Module["stackSave"] = Module["asm"]["stackSave"]).apply(null, arguments);
};

/** @type {function(...*):?} */
var stackRestore = Module["stackRestore"] = function() {
  return (stackRestore = Module["stackRestore"] = Module["asm"]["stackRestore"]).apply(null, arguments);
};

/** @type {function(...*):?} */
var stackAlloc = Module["stackAlloc"] = function() {
  return (stackAlloc = Module["stackAlloc"] = Module["asm"]["stackAlloc"]).apply(null, arguments);
};

/** @type {function(...*):?} */
var _emscripten_stack_set_limits = Module["_emscripten_stack_set_limits"] = function() {
  return (_emscripten_stack_set_limits = Module["_emscripten_stack_set_limits"] = Module["asm"]["emscripten_stack_set_limits"]).apply(null, arguments);
};

/** @type {function(...*):?} */
var dynCall_iiii = Module["dynCall_iiii"] = function() {
  return (dynCall_iiii = Module["dynCall_iiii"] = Module["asm"]["dynCall_iiii"]).apply(null, arguments);
};

/** @type {function(...*):?} */
var dynCall_v = Module["dynCall_v"] = function() {
  return (dynCall_v = Module["dynCall_v"] = Module["asm"]["dynCall_v"]).apply(null, arguments);
};

/** @type {function(...*):?} */
var dynCall_viiii = Module["dynCall_viiii"] = function() {
  return (dynCall_viiii = Module["dynCall_viiii"] = Module["asm"]["dynCall_viiii"]).apply(null, arguments);
};

/** @type {function(...*):?} */
var dynCall_ii = Module["dynCall_ii"] = function() {
  return (dynCall_ii = Module["dynCall_ii"] = Module["asm"]["dynCall_ii"]).apply(null, arguments);
};

/** @type {function(...*):?} */
var dynCall_vi = Module["dynCall_vi"] = function() {
  return (dynCall_vi = Module["dynCall_vi"] = Module["asm"]["dynCall_vi"]).apply(null, arguments);
};

/** @type {function(...*):?} */
var dynCall_iiiiii = Module["dynCall_iiiiii"] = function() {
  return (dynCall_iiiiii = Module["dynCall_iiiiii"] = Module["asm"]["dynCall_iiiiii"]).apply(null, arguments);
};

/** @type {function(...*):?} */
var dynCall_vii = Module["dynCall_vii"] = function() {
  return (dynCall_vii = Module["dynCall_vii"] = Module["asm"]["dynCall_vii"]).apply(null, arguments);
};

/** @type {function(...*):?} */
var dynCall_iii = Module["dynCall_iii"] = function() {
  return (dynCall_iii = Module["dynCall_iii"] = Module["asm"]["dynCall_iii"]).apply(null, arguments);
};

/** @type {function(...*):?} */
var dynCall_iiiii = Module["dynCall_iiiii"] = function() {
  return (dynCall_iiiii = Module["dynCall_iiiii"] = Module["asm"]["dynCall_iiiii"]).apply(null, arguments);
};

/** @type {function(...*):?} */
var dynCall_iidiiii = Module["dynCall_iidiiii"] = function() {
  return (dynCall_iidiiii = Module["dynCall_iidiiii"] = Module["asm"]["dynCall_iidiiii"]).apply(null, arguments);
};

/** @type {function(...*):?} */
var dynCall_jiji = Module["dynCall_jiji"] = function() {
  return (dynCall_jiji = Module["dynCall_jiji"] = Module["asm"]["dynCall_jiji"]).apply(null, arguments);
};

/** @type {function(...*):?} */
var _asyncify_start_unwind = Module["_asyncify_start_unwind"] = function() {
  return (_asyncify_start_unwind = Module["_asyncify_start_unwind"] = Module["asm"]["asyncify_start_unwind"]).apply(null, arguments);
};

/** @type {function(...*):?} */
var _asyncify_stop_unwind = Module["_asyncify_stop_unwind"] = function() {
  return (_asyncify_stop_unwind = Module["_asyncify_stop_unwind"] = Module["asm"]["asyncify_stop_unwind"]).apply(null, arguments);
};

/** @type {function(...*):?} */
var _asyncify_start_rewind = Module["_asyncify_start_rewind"] = function() {
  return (_asyncify_start_rewind = Module["_asyncify_start_rewind"] = Module["asm"]["asyncify_start_rewind"]).apply(null, arguments);
};

/** @type {function(...*):?} */
var _asyncify_stop_rewind = Module["_asyncify_stop_rewind"] = function() {
  return (_asyncify_stop_rewind = Module["_asyncify_stop_rewind"] = Module["asm"]["asyncify_stop_rewind"]).apply(null, arguments);
};





// === Auto-generated postamble setup entry stuff ===



var calledRun;

/**
 * @constructor
 * @this {ExitStatus}
 */
function ExitStatus(status) {
  this.name = "ExitStatus";
  this.message = "Program terminated with exit(" + status + ")";
  this.status = status;
}

var calledMain = false;

dependenciesFulfilled = function runCaller() {
  // If run has never been called, and we should call run (INVOKE_RUN is true, and Module.noInitialRun is not false)
  if (!calledRun) run();
  if (!calledRun) dependenciesFulfilled = runCaller; // try this again later, after new deps are fulfilled
};

function callMain(args) {

  var entryFunction = Module['_main'];

  args = args || [];

  var argc = args.length+1;
  var argv = stackAlloc((argc + 1) * 4);
  HEAP32[argv >> 2] = allocateUTF8OnStack(thisProgram);
  for (var i = 1; i < argc; i++) {
    HEAP32[(argv >> 2) + i] = allocateUTF8OnStack(args[i - 1]);
  }
  HEAP32[(argv >> 2) + argc] = 0;

  try {

    var ret = entryFunction(argc, argv);

    // In PROXY_TO_PTHREAD builds, we should never exit the runtime below, as
    // execution is asynchronously handed off to a pthread.
    // if we are saving the stack, then do not call exit, we are not
    // really exiting now, just unwinding the JS stack
    if (!noExitRuntime) {
      // if we're not running an evented main loop, it's time to exit
      exit(ret, /* implicit = */ true);
    }
  }
  catch(e) {
    if (e instanceof ExitStatus) {
      // exit() throws this once it's done to make sure execution
      // has been stopped completely
      return;
    } else if (e == 'unwind') {
      // running an evented main loop, don't immediately exit
      noExitRuntime = true;
      return;
    } else {
      var toLog = e;
      if (e && typeof e === 'object' && e.stack) {
        toLog = [e, e.stack];
      }
      err('exception thrown: ' + toLog);
      quit_(1, e);
    }
  } finally {
    calledMain = true;

  }
}

/** @type {function(Array=)} */
function run(args) {
  args = args || arguments_;

  if (runDependencies > 0) {
    return;
  }

  preRun();

  // a preRun added a dependency, run will be called later
  if (runDependencies > 0) {
    return;
  }

  function doRun() {
    // run may have just been called through dependencies being fulfilled just in this very frame,
    // or while the async setStatus time below was happening
    if (calledRun) return;
    calledRun = true;
    Module['calledRun'] = true;

    if (ABORT) return;

    initRuntime();

    preMain();

    if (Module['onRuntimeInitialized']) Module['onRuntimeInitialized']();

    if (shouldRunNow) callMain(args);

    postRun();
  }

  if (Module['setStatus']) {
    Module['setStatus']('Running...');
    setTimeout(function() {
      setTimeout(function() {
        Module['setStatus']('');
      }, 1);
      doRun();
    }, 1);
  } else
  {
    doRun();
  }
}
Module['run'] = run;

/** @param {boolean|number=} implicit */
function exit(status, implicit) {

  // if this is just main exit-ing implicitly, and the status is 0, then we
  // don't need to do anything here and can just leave. if the status is
  // non-zero, though, then we need to report it.
  // (we may have warned about this earlier, if a situation justifies doing so)
  if (implicit && noExitRuntime && status === 0) {
    return;
  }

  if (noExitRuntime) {
  } else {

    EXITSTATUS = status;

    exitRuntime();

    if (Module['onExit']) Module['onExit'](status);

    ABORT = true;
  }

  quit_(status, new ExitStatus(status));
}

if (Module['preInit']) {
  if (typeof Module['preInit'] == 'function') Module['preInit'] = [Module['preInit']];
  while (Module['preInit'].length > 0) {
    Module['preInit'].pop()();
  }
}

// shouldRunNow refers to calling main(), not run().
var shouldRunNow = true;

if (Module['noInitialRun']) shouldRunNow = false;

noExitRuntime = true;

run();