optimize raytrace demo

2 files changed, 644 insertions, 2030 deletions

diff --git a/demos/raytrace.html b/demos/raytrace.html
index a95d4468..b74b9a10 100644
--- a/demos/raytrace.html
+++ b/demos/raytrace.html
@@ -14,6 +14,8 @@
     var calcedDepth = -1;
     // Do everything - initialize SDL, set up canvas, render
     function render(size, depth) {
+      var startTime = Date.now();
+
       if (drawingNow) return;
       drawingNow = true;
       if (calcedDepth != depth) {
@@ -27,7 +29,7 @@
         _SDL_Init(size);
         var canvas = document.getElementById('canvas');
         canvas.width = canvas.height = size;
-        HEAP[_screen] = _SDL_SetVideoMode(canvas.width, canvas.height, 32, 0, canvas);
+        IHEAP[_screen] = _SDL_SetVideoMode(canvas.width, canvas.height, 32, 0, canvas);
         var y = canvas.height-1;
         function drawLine() {
           print("Raytracing line: <b>" + (canvas.height-y) + "/" + canvas.height + '</b>');
@@ -36,7 +38,7 @@
           if (y >= 0) {
             setTimeout(arguments.callee, 1);
           } else {
-            print('');
+            print('Finished in ' + (Date.now() - startTime)/1000 + ' seconds.');
             drawingNow = false;
           }
         }
diff --git a/demos/raytrace.js b/demos/raytrace.js
index 2f4dffeb..9da9b744 100644
--- a/demos/raytrace.js
+++ b/demos/raytrace.js
@@ -7,2084 +7,696 @@
 // Optimized using Closure Compiler
 //====================================================================================
 
-
-// === Auto-generated preamble library stuff ===
-
-function __globalConstructor__() {
-}
-
-var __THREW__ = false; // Used in checking for thrown exceptions.
-
-var __ATEXIT__ = [];
-
-
-
-
-function assert(condition, text) {
-  if (!condition) {
-    var text = "Assertion failed: " + text;
-    print(text + ':\n' + (new Error).stack);
-    throw "Assertion: " + text;
+function l() {
+  return function() {
   }
 }
-
-function Pointer_niceify(ptr) {
-  return { slab: HEAP, pos: ptr };
+function m() {
 }
-
-// Creates a pointer for a certain slab and a certain address in that slab.
-// If just a slab is given, will allocate room for it and copy it there. In
-// other words, do whatever is necessary in order to return a pointer, that
-// points to the slab (and possibly position) we are given.
-
-ALLOC_NORMAL = 0; // Tries to use _malloc()
-ALLOC_STACK = 1; // Lives for the duration of the current function call
-ALLOC_STATIC = 2; // Cannot be freed
-
-function Pointer_make(slab, pos, allocator) {
-  pos = pos ? pos : 0;
-  if (slab === HEAP) return pos;
-  // Flatten out - needed for global consts/vars
-  function flatten(slab) {
-    if (!slab || slab.length === undefined || typeof slab === 'function') return [slab];
-    return slab.map(flatten).reduce(function(a,b) { return a.concat(b) }, []);
+FUNCTION_TABLE = [];
+var o = [];
+function q(a, b) {
+  if(!a) {
+    b = "Assertion failed: " + b;
+    print(b + ":\n" + Error().stack);
+    throw"Assertion: " + b;
   }
-  var slab = flatten(slab);
-  // Finalize
-  var ret = [_malloc, stackAlloc, staticAlloc][allocator ? allocator : ALLOC_STATIC](Math.max(slab.length - pos, 1));
-  for (var i = 0; i < slab.length - pos; i++) {
-    HEAP[ret + i] = slab[pos + i];
+}
+ALLOC_NORMAL = 0;
+ALLOC_STACK = 1;
+ALLOC_STATIC = 2;
+function r(a, b, c) {
+  function d(g) {
+    if(!g || g.length === undefined || typeof g === "function") {
+      return[g]
+    }
+    return g.map(d).reduce(function(i, j) {
+      return i.concat(j)
+    }, [])
   }
-  return ret;
+  b = b ? b : 0;
+  if(a === HEAP) {
+    return b
+  }
+  a = d(a);
+  c = [_malloc, aa, u][c ? c : ALLOC_STATIC](Math.max(a.length - b, 1));
+  for(var e = 0;e < a.length - b;e++) {
+    var h = a[b + e];
+    if(typeof h === "number" || typeof h === "boolean") {
+      IHEAP[c + e] = h;
+      FHEAP[c + e] = h
+    }else {
+      HEAP[c + e] = h
+    }
+  }
+  return c
 }
-
-function Pointer_stringify(ptr) {
-  ptr = Pointer_niceify(ptr);
-
-  var ret = "";
-  var i = 0;
-  var t;
-  while (1) {
-//    if ((ptr.pos + i) >= ptr.slab.length) { return "<< Invalid read: " + (ptr.pos+i) + " : " + ptr.slab.length + " >>"; } else {}
-    if ((ptr.pos+i) >= ptr.slab.length) { break; } else {}
-    t = String.fromCharCode(ptr.slab[ptr.pos + i]);
-    if (t == "\0") { break; } else {}
-    ret += t;
-    i += 1;
+function ba(a) {
+  a = {e:IHEAP, d:a};
+  for(var b = "", c = 0, d;;) {
+    if(a.d + c >= a.e.length) {
+      break
+    }
+    d = String.fromCharCode(a.e[a.d + c]);
+    if(d == "\u0000") {
+      break
+    }
+    b += d;
+    c += 1
   }
-  return ret;
+  return b
 }
-
-// Memory management
-
 PAGE_SIZE = 4096;
-function alignMemoryPage(x) {
-  return Math.ceil(x/PAGE_SIZE)*PAGE_SIZE;
-}
-
-// If we don't have malloc/free implemented, use a simple implementation.
-if (!this._malloc) {
-  _malloc = staticAlloc;
-  _free = function() { }; // leak!
-}
-
-// Mangled "new"s... need a heuristic for autogeneration...
-__Znwj = _malloc; // llvm-gcc
-__Znaj = _malloc; // llvm-gcc
-__Znam = _malloc; // clang
-__Znwm = _malloc; // clang
-// Mangled "delete"s... need a heuristic for autogeneration...
-__ZdlPv = _free; // llvm-gcc
-__ZdaPv = _free; // llvm-gcc
-
-function __initializeRuntime__() {
-  HEAP = intArrayFromString('(null)'); // So printing %s of NULL gives '(null)'
-                                       // Also this ensures we leave 0 as an invalid address, 'NULL'
-
-  STACK_STACK = [];
-  STACK_ROOT = STACKTOP = alignMemoryPage(10);
-  if (!this['TOTAL_STACK']) TOTAL_STACK = 64*1024*100; // Reserved room for stack
-  STACK_MAX = STACK_ROOT + TOTAL_STACK;
-
-  STATICTOP = alignMemoryPage(STACK_MAX);
-}
-
-// stdio.h
-
-// C-style: we work on ints on the HEAP.
-function __formatString() {
-  var textIndex = arguments[0];
-  var argIndex = 1;
-  var ret = [];
-  var curr = -1;
-  while (curr != 0) {
-    curr = HEAP[textIndex];
-    next = HEAP[textIndex+1];
-    if (curr == '%'.charCodeAt(0) && ['d', 'u', 'f', '.'].indexOf(String.fromCharCode(next)) != -1) {
-      var argText = String(arguments[argIndex]);
-      // Handle very very simply formatting, namely only %.Xf
-      if (next == '.'.charCodeAt(0)) {
-        var limit = parseInt(String.fromCharCode(HEAP[textIndex+2]));
-        var dotIndex = argText.indexOf('.');
-        if (dotIndex == -1) {
-          dotIndex = argText.length;
-          argText += '.';
-        }
-        argText += '00000000000'; // padding
-        argText = argText.substr(0, dotIndex+1+limit);
-        textIndex += 2;
-      } else if (next == 'u'.charCodeAt(0)) {
-        argText = String(unSign(arguments[argIndex], 32));
-      }
-      argText.split('').forEach(function(chr) {
-        ret.push(chr.charCodeAt(0));
-      });
-      argIndex += 1;
-      textIndex += 2;
-    } else if (curr == '%'.charCodeAt(0) && next == 's'.charCodeAt(0)) {
-      ret = ret.concat(String_copy(arguments[argIndex]));
-      argIndex += 1;
-      textIndex += 2;
-    } else {
-      ret.push(curr);
-      textIndex += 1;
+if(!this.f) {
+  _malloc = u;
+  _free = l()
+}
+__Znwm = __Znam = __Znaj = __Znwj = _malloc;
+__ZdaPv = __ZdlPv = _free;
+function ia() {
+  HEAP = x("(null)");
+  this.TOTAL_MEMORY || (TOTAL_MEMORY = 52428800);
+  if(this.Int32Array) {
+    IHEAP = new Int32Array(TOTAL_MEMORY);
+    for(var a = 0;a < HEAP.length;a++) {
+      IHEAP[a] = HEAP[a]
     }
+  }else {
+    IHEAP = HEAP
   }
-  return Pointer_make(ret, 0, ALLOC_STACK); // NB: Stored on the stack
-}
-
-// Copies a list of num items on the HEAP into a
-// a normal JavaScript array of numbers
-function Array_copy(ptr, num) {
-  // XXX hardcoded ptr impl
-  return HEAP.slice(ptr, ptr+num);
-}
-
-// Copies a C-style string, terminated by a zero, from the HEAP into
-// a normal JavaScript array of numbers
-function String_copy(ptr, addZero) {
-  // XXX hardcoded ptr impl
-  return Array_copy(ptr, _strlen(ptr)).concat(addZero ? [0] : []);
-}
-
-// stdlib.h
-
-// Get a pointer, return int value of the string it points to
-function _atoi(s) {
-  return Math.floor(Number(Pointer_stringify(s)));
+  FHEAP = this.Float64Array ? new Float64Array(TOTAL_MEMORY) : HEAP;
+  STACK_ROOT = STACKTOP = Math.ceil(10 / PAGE_SIZE) * PAGE_SIZE;
+  this.TOTAL_STACK || (TOTAL_STACK = 1048576);
+  STACK_MAX = STACK_ROOT + TOTAL_STACK;
+  STATICTOP = Math.ceil(STACK_MAX / PAGE_SIZE) * PAGE_SIZE
 }
-
-function _llvm_memcpy_i32(dest, src, num, idunno) {
-// XXX hardcoded ptr impl
-  for (var i = 0; i < num; i++) {
-    HEAP[dest + i] = HEAP[src + i];
+function ja(a, b, c) {
+  for(var d = 0;d < c;d++) {
+    HEAP[a + d] = HEAP[b + d];
+    IHEAP[a + d] = IHEAP[b + d];
+    FHEAP[a + d] = FHEAP[b + d]
   }
-//  dest = Pointer_niceify(dest);
-//  src = Pointer_niceify(src);
-//  dest.slab = src.slab.slice(src.pos);
 }
-_llvm_memcpy_i64 = _llvm_memcpy_i32;
-
-// Tools
-
-PRINTBUFFER = '';
-function __print__(text) {
-  // We print only when we see a '\n', as console JS engines always add
-  // one anyhow.
-  PRINTBUFFER = PRINTBUFFER + text;
-  var endIndex;
-  while ((endIndex = PRINTBUFFER.indexOf('\n')) != -1) {
-    print(PRINTBUFFER.substr(0, endIndex));
-    PRINTBUFFER = PRINTBUFFER.substr(endIndex + 1);
+_llvm_memcpy_p0i8_p0i8_i32 = _llvm_memcpy_i64 = ja;
+_llvm_memset_p0i8_i32 = function(a, b, c) {
+  for(var d = 0;d < c;d++) {
+    HEAP[a + d] = IHEAP[a + d] = FHEAP[a + d] = b
   }
-}
-
-function jrint(label, obj) { // XXX manual debugging
-  if (!obj) {
-    obj = label;
-    label = '';
-  } else
-    label = label + ' : ';
-  print(label + JSON.stringify(obj));
-}
-
-// This processes a 'normal' string into a C-line array of numbers.
-// For LLVM-originating strings, see parser.js:parseLLVMString function
-function intArrayFromString(stringy) {
-  var ret = [];
-  var t;
-  var i = 0;
-  while (i < stringy.length) {
-    ret.push(stringy.charCodeAt(i));
-    i = i + 1;
+};
+PRINTBUFFER = "";
+function x(a) {
+  for(var b = [], c = 0;c < a.length;) {
+    b.push(a.charCodeAt(c));
+    c += 1
   }
-  ret.push(0);
-  return ret;
-}
-
-// Converts a value we have as signed, into an unsigned value. For
-// example, -1 in int32 would be a very large number as unsigned.
-function unSign(value, bits) {
-  if (value >= 0) return value;
-  return 2*Math.abs(1 << (bits-1)) + value;
-}
-
-// === Body ===
-
-function stackAlloc(size) { var ret = STACKTOP; STACKTOP += size; return ret; }
-function staticAlloc(size) { var ret = STATICTOP; STATICTOP += size; return ret; }
-
-var _0___FLATTENER = [0,1];
-var _struct__1__pthread_mutex_s___FLATTENER = [0,1,2,3,4,5];
-var _struct_SDL_BlitMap___FLATTENER = [];
-var _struct_SDL_Color___FLATTENER = [0,1,2,3];
-var _struct_SDL_Palette___FLATTENER = [0,1];
-var _struct_SDL_PixelFormat___FLATTENER = [0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16];
-var _struct_SDL_Rect___FLATTENER = [0,1,2,3];
-var _struct_SDL_Surface___FLATTENER = [0,1,2,3,4,5,6,7,8,12,13,14,15,16];
-var _struct___pthread_slist_t___FLATTENER = [0];
-var _struct_basis_t___FLATTENER = [0,3,6];
-var _struct_hit_t___FLATTENER = [0,3];
-var _struct_node_t___FLATTENER = [0,4,8];
-var _struct_private_hwdata___FLATTENER = [];
-var _struct_ray_t___FLATTENER = [0,3];
-var _struct_sphere_t___FLATTENER = [0,3];
-var __struct_std__ios_base__Init____FLATTENER = [0];
-var _struct_v_t___FLATTENER = [0,1,2];
-var _union__0__45___FLATTENER = [0];
-var _union_pthread_attr_t___FLATTENER = [0,1];
-var _union_pthread_mutex_t___FLATTENER = [0];
-var _union_pthread_mutexattr_t___FLATTENER = [0];
-this.__defineGetter__("_screen", function() { delete _screen; _screen = Pointer_make([0], 0, ALLOC_STATIC); return _screen });
-this.__defineGetter__("__ZStL8__ioinit", function() { delete __ZStL8__ioinit; __ZStL8__ioinit = Pointer_make([0], 0, ALLOC_STATIC); return __ZStL8__ioinit });
-var ___dso_handle = 0; /* external value? */
-this.__defineGetter__("__ZL5light", function() { delete __ZL5light; __ZL5light = Pointer_make([0,0,0], 0, ALLOC_STATIC); return __ZL5light });
-this.__defineGetter__("__ZL4pool", function() { delete __ZL4pool; __ZL4pool = Pointer_make([0], 0, ALLOC_STATIC); return __ZL4pool });
-this.__defineGetter__("__ZL3end", function() { delete __ZL3end; __ZL3end = Pointer_make([0], 0, ALLOC_STATIC); return __ZL3end });
-this.__defineGetter__("__ZL4grid", function() { delete __ZL4grid; __ZL4grid = Pointer_make([ [-1.000000e+00, -0.3333333333333333], [0.3333333333333333, -1.000000e+00], [-0.3333333333333333, 1.000000e+00], [1.000000e+00, 0.3333333333333333] ], 0, ALLOC_STATIC); return __ZL4grid });
-
-__globalConstructor__ = function() {
-  __GLOBAL__I_screen();
-}
-
-
-_sqrt = function (x) { return Math.sqrt(x) }
-__ZNSt8ios_base4InitC1Ev = function () {
-    // need valid 'file descriptors'
-    __ZSt4cout = 1;
-    __ZSt4cerr = 2;
+  b.push(0);
+  return b
+}
+function aa(a) {
+  var b = STACKTOP;
+  q(a > 0);
+  STACKTOP += a;
+  STACKTOP = Math.ceil(STACKTOP / 4) * 4;
+  q(STACKTOP < STACK_ROOT + STACK_MAX);
+  return b
+}
+function u(a) {
+  var b = STATICTOP;
+  q(a > 0);
+  STATICTOP += a;
+  STATICTOP = Math.ceil(STATICTOP / 4) * 4;
+  return b
+}
+var ka = [0, 1, 2, 3, 4, 5, 6, 7, 8, 12, 13, 14, 15, 16];
+this.__defineGetter__("_screen", function() {
+  delete _screen;
+  return _screen = r([0], 0, ALLOC_STATIC)
+});
+this.__defineGetter__("__ZStL8__ioinit", function() {
+  delete __ZStL8__ioinit;
+  return __ZStL8__ioinit = r([0], 0, ALLOC_STATIC)
+});
+var la = 0;
+this.__defineGetter__("__ZL5light", function() {
+  delete __ZL5light;
+  return __ZL5light = r([0, 0, 0], 0, ALLOC_STATIC)
+});
+this.__defineGetter__("__ZL4pool", function() {
+  delete __ZL4pool;
+  return __ZL4pool = r([0], 0, ALLOC_STATIC)
+});
+this.__defineGetter__("__ZL3end", function() {
+  delete __ZL3end;
+  return __ZL3end = r([0], 0, ALLOC_STATIC)
+});
+this.__defineGetter__("__ZL4grid", function() {
+  delete __ZL4grid;
+  return __ZL4grid = r([[-1, -0.3333333333333333], [0.3333333333333333, -1], [-0.3333333333333333, 1], [1, 0.3333333333333333]], 0, ALLOC_STATIC)
+});
+m = function() {
+  B()
+};
+_sqrt = Math.sqrt;
+__ZNSt8ios_base4InitC1Ev = function() {
+  __ZSt4cout = 1;
+  __ZSt4cerr = 2
+};
+___cxa_atexit = function(a) {
+  o.push(a)
+};
+__ZNSt8ios_base4InitD1Ev = function() {
+  __ZSt4cout = 1;
+  __ZSt4cerr = 2
+};
+_cos = Math.cos;
+_sin = Math.sin;
+_SDL_LockSurface = function(a) {
+  var b = SDL_SURFACES[a];
+  b.a = b.c.getImageData(0, 0, b.width, b.height);
+  for(var c = b.a.data.length, d = 0;d < c;d++) {
+    IHEAP[b.b + d] = b.a.data[d]
   }
-___cxa_atexit = function (func) {
-    __ATEXIT__.push(func);
+  IHEAP[a + 5] = b.b
+};
+_SDL_UnlockSurface = function(a) {
+  a = SDL_SURFACES[a];
+  for(var b = a.a.data.length, c = 0;c < b;c++) {
+    a.a.data[c] = IHEAP[a.b + c]
   }
-__ZNSt8ios_base4InitD1Ev = function () {
-    // need valid 'file descriptors'
-    __ZSt4cout = 1;
-    __ZSt4cerr = 2;
+  for(c = 0;c < b / 4;c++) {
+    a.a.data[c * 4 + 3] = 255
   }
-_cos = function (x) { return Math.cos(x) }
-_sin = function (x) { return Math.sin(x) }
-_SDL_LockSurface = function (surf) {
-    var surfData = SDL_SURFACES[surf];
-    surfData.image = surfData.ctx.getImageData(0, 0, surfData.width, surfData.height);
-    // Copy pixel data to somewhere accessible to 'C/C++'
-    var num = surfData.image.data.length;
-    for (var i = 0; i < num; i++) {
-      HEAP[surfData.buffer+i] = surfData.image.data[i];
+  a.c.putImageData(a.a, 0, 0);
+  a.a = null
+};
+_SDL_Flip = l();
+_SDL_Init = function() {
+  SDL_SURFACES = {};
+  return 1
+};
+_SDL_SetVideoMode = function(a, b, c, d, e) {
+  c = _malloc(14);
+  SDL_SURFACES[c] = {width:a, height:b, canvas:e, c:e.getContext("2d"), g:c, b:_malloc(a * b * 4)};
+  return c
+};
+_SDL_Delay = l();
+_SDL_Quit = function() {
+  return 1
+};
+function B() {
+  C(1, 65535)
+}
+FUNCTION_TABLE[0] = B;
+FUNCTION_TABLE[1] = function(a, b) {
+  return b
+};
+FUNCTION_TABLE[2] = l();
+function E(a, b) {
+  return FHEAP[a] < FHEAP[b] ? b : a
+}
+FUNCTION_TABLE[3] = E;
+function F(a, b) {
+  return IHEAP[a] < IHEAP[b] ? b : a
+}
+FUNCTION_TABLE[4] = F;
+var ma = 5;
+FUNCTION_TABLE[5] = function() {
+  __ZNSt8ios_base4InitD1Ev(__ZStL8__ioinit)
+};
+function G(a, b, c, d) {
+  FHEAP[a] = b;
+  FHEAP[a + 1] = c;
+  FHEAP[a + 2] = d
+}
+FUNCTION_TABLE[6] = G;
+function H(a, b, c) {
+  G(a, FHEAP[b] + FHEAP[c], FHEAP[b + 1] + FHEAP[c + 1], FHEAP[b + 2] + FHEAP[c + 2])
+}
+FUNCTION_TABLE[7] = H;
+function I(a, b, c) {
+  G(a, FHEAP[b] - FHEAP[c], FHEAP[b + 1] - FHEAP[c + 1], FHEAP[b + 2] - FHEAP[c + 2])
+}
+FUNCTION_TABLE[8] = I;
+function J(a, b) {
+  G(a, 0 - FHEAP[b], 0 - FHEAP[b + 1], 0 - FHEAP[b + 2])
+}
+FUNCTION_TABLE[9] = J;
+function K(a, b, c) {
+  G(a, FHEAP[b] * c, FHEAP[b + 1] * c, FHEAP[b + 2] * c)
+}
+FUNCTION_TABLE[10] = K;
+function L(a, b, c) {
+  G(a, FHEAP[b + 1] * FHEAP[c + 2] - FHEAP[b + 2] * FHEAP[c + 1], FHEAP[b + 2] * FHEAP[c] - FHEAP[b] * FHEAP[c + 2], FHEAP[b] * FHEAP[c + 1] - FHEAP[b + 1] * FHEAP[c])
+}
+FUNCTION_TABLE[11] = L;
+function M(a, b) {
+  return FHEAP[a] * FHEAP[b] + FHEAP[a + 1] * FHEAP[b + 1] + FHEAP[a + 2] * FHEAP[b + 2]
+}
+FUNCTION_TABLE[12] = M;
+function P(a, b) {
+  FHEAP[a] = FHEAP[b];
+  FHEAP[a + 1] = FHEAP[b + 1];
+  FHEAP[a + 2] = FHEAP[b + 2]
+}
+FUNCTION_TABLE[13] = P;
+function Q(a, b, c) {
+  FHEAP[a] = FHEAP[b];
+  FHEAP[a + 1] = FHEAP[b + 1];
+  FHEAP[a + 2] = FHEAP[b + 2];
+  a = a + 3;
+  FHEAP[a] = FHEAP[c];
+  FHEAP[a + 1] = FHEAP[c + 1];
+  FHEAP[a + 2] = FHEAP[c + 2]
+}
+FUNCTION_TABLE[14] = Q;
+function R(a) {
+  G(a, 0, 0, 0);
+  FHEAP[a + 3] = Infinity
+}
+FUNCTION_TABLE[15] = R;
+FUNCTION_TABLE[16] = l();
+function S(a, b, c) {
+  FHEAP[a] = FHEAP[b];
+  FHEAP[a + 1] = FHEAP[b + 1];
+  FHEAP[a + 2] = FHEAP[b + 2];
+  FHEAP[a + 3] = c
+}
+FUNCTION_TABLE[17] = S;
+function T(a, b, c) {
+  var d = STACKTOP;
+  STACKTOP += 3;
+  var e = 1 / FHEAP[b + 3];
+  I(d, c, b);
+  K(a, d, e);
+  STACKTOP = d
+}
+FUNCTION_TABLE[18] = T;
+FUNCTION_TABLE[19] = l();
+function U(a, b, c, d) {
+  FHEAP[a] = FHEAP[b];
+  FHEAP[a + 1] = FHEAP[b + 1];
+  FHEAP[a + 2] = FHEAP[b + 2];
+  FHEAP[a + 3] = FHEAP[b + 3];
+  b = a + 4;
+  FHEAP[b] = FHEAP[c];
+  FHEAP[b + 1] = FHEAP[c + 1];
+  FHEAP[b + 2] = FHEAP[c + 2];
+  FHEAP[b + 3] = FHEAP[c + 3];
+  IHEAP[a + 8] = d
+}
+FUNCTION_TABLE[20] = U;
+function V(a, b) {
+  var c = STACKTOP;
+  STACKTOP += 12;
+  var d = c + 3, e = c + 6, h = c + 9;
+  W(d, b);
+  if((FHEAP[d] * FHEAP[d] != 1 != 0 & FHEAP[d + 1] * FHEAP[d + 1] != 1 != 0 & FHEAP[d + 2] * FHEAP[d + 2] != 1) != 0) {
+    var g = a + 3;
+    FHEAP[g] = FHEAP[d];
+    FHEAP[g + 1] = FHEAP[d + 1];
+    FHEAP[g + 2] = FHEAP[d + 2];
+    if(FHEAP[d + 1] * FHEAP[d + 1] > FHEAP[d] * FHEAP[d]) {
+      if(FHEAP[d + 1] * FHEAP[d + 1] > FHEAP[d + 2] * FHEAP[d + 2]) {
+        FHEAP[a + 3 + 1] = 0 - FHEAP[a + 3 + 1]
+      }else {
+        FHEAP[a + 3 + 2] = 0 - FHEAP[a + 3 + 2]
+      }
+    }else {
+      if(FHEAP[d + 2] * FHEAP[d + 2] > FHEAP[d] * FHEAP[d]) {
+        FHEAP[a + 3 + 2] = 0 - FHEAP[a + 3 + 2]
+      }else {
+        FHEAP[a + 3] = 0 - FHEAP[a + 3]
+      }
     }
-    // Mark in C/C++-accessible SDL structure
-    // SDL_Surface has the following fields: Uint32 flags, SDL_PixelFormat *format; int w, h; Uint16 pitch; void *pixels; ...
-    // So we have fields all of the same size, and 5 of them before us.
-    HEAP[surf + 5*1] = surfData.buffer;
+  }else {
+    G(c, FHEAP[d + 2], FHEAP[d], FHEAP[d + 1]);
+    g = a + 3;
+    FHEAP[g] = FHEAP[c];
+    FHEAP[g + 1] = FHEAP[c + 1];
+    FHEAP[g + 2] = FHEAP[c + 2]
   }
-_SDL_UnlockSurface = function (surf) {
-    var surfData = SDL_SURFACES[surf];
-    // Copy pixel data to image
-    var num = surfData.image.data.length;
-    for (var i = 0; i < num; i++) {
-      surfData.image.data[i] = HEAP[surfData.buffer+i];
+  FHEAP[a] = FHEAP[d];
+  FHEAP[a + 1] = FHEAP[d + 1];
+  FHEAP[a + 2] = FHEAP[d + 2];
+  d = a + 6;
+  L(e, a, a + 3);
+  FHEAP[d] = FHEAP[e];
+  FHEAP[d + 1] = FHEAP[e + 1];
+  FHEAP[d + 2] = FHEAP[e + 2];
+  e = a + 3;
+  L(h, a, a + 6);
+  FHEAP[e] = FHEAP[h];
+  FHEAP[e + 1] = FHEAP[h + 1];
+  FHEAP[e + 2] = FHEAP[h + 2];
+  STACKTOP = c
+}
+FUNCTION_TABLE[21] = V;
+function X(a) {
+  return M(a, a)
+}
+FUNCTION_TABLE[22] = X;
+function W(a, b) {
+  var c = 1 / _sqrt(X(b));
+  K(a, b, c)
+}
+FUNCTION_TABLE[23] = W;
+function C(a, b) {
+  var c = STACKTOP;
+  STACKTOP += 3;
+  var d = a == 1;
+  a:do {
+    if(d) {
+      if(b != 65535) {
+        break a
+      }
+      __ZNSt8ios_base4InitC1Ev(__ZStL8__ioinit);
+      ___cxa_atexit(ma, 0, la);
+      G(c, -0.5, -0.65, 0.9);
+      W(__ZL5light, c)
     }
-    for (var i = 0; i < num/4; i++) {
-      surfData.image.data[i*4+3] = 255; // opacity, as canvases blend alpha
+  }while(0);
+  STACKTOP = c
+}
+FUNCTION_TABLE[24] = C;
+function Y(a, b) {
+  var c = STACKTOP;
+  STACKTOP += 3;
+  var d, e, h;
+  I(c, a, b);
+  d = M(b + 3, c);
+  e = d * d - X(c) + FHEAP[a + 3] * FHEAP[a + 3];
+  if(e < 0) {
+    d = Infinity
+  }else {
+    h = _sqrt(e);
+    e = d + h;
+    d = d - h;
+    if(e < 0) {
+      d = Infinity
+    }else {
+      d = d = d > 0 ? d : e
     }
-    // Copy to canvas
-    surfData.ctx.putImageData(surfData.image, 0, 0);
-    // Cleanup
-    surfData.image = null;
-  }
-_SDL_Flip = function (surf) {
-    // We actually do this in Unlock...
-  }
-// stub for _atoi
-// stub for __Znaj
-_SDL_Init = function (what) {
-    SDL_SURFACES = {};
-    return 1;
-  }
-_SDL_SetVideoMode = function (width, height, depth, flags, canvas) {
-  //                                                      ^^^^^^ a 'canvas' parameter is added here; supply a canvas from JS there
-    var surf = _malloc(14*1); // SDL_Surface has 14 fields of quantum size
-    SDL_SURFACES[surf] = {
-      width: width,
-      height: height,
-      canvas: canvas,
-      ctx: canvas.getContext('2d'),
-      surf: surf,
-      buffer: _malloc(width*height*4),
-    };
-    return surf;
-  }
-_SDL_Delay = function (delay) {
-    // No can do... unless you were a generator...
-  }
-_SDL_Quit = function () {
-    return 1;
   }
-// stub for i32
-// stub for i8_
-// stub for i32
-// stub for i32
-// stub for i32
-// stub for i32
-// stub for i32
-// stub for i32
-// stub for i32
-// stub for i32
-// stub for i32
-// stub for i32
-// stub for i32
-// stub for i32
-
-
-function __GLOBAL__I_screen() {
-  STACK_STACK.push(STACKTOP);
-  var __label__;
-  __Z41__static_initialization_and_destruction_0ii(1, 65535);
-  __label__ = 0; /* _return */ 
-  STACKTOP = STACK_STACK.pop();
-  return;
-}
-
-
-function __ZnwjPv(_unnamed_arg, ___p) {
-  STACK_STACK.push(STACKTOP);
-  var __label__;
-  var _unnamed_arg_addr;
-  var ___p_addr = STACKTOP; STACKTOP += 1;
-  var _retval = STACKTOP; STACKTOP += 1;
-  var _0 = STACKTOP; STACKTOP += 1;
-  var __alloca_point_ = 0;
-  _unnamed_arg_addr = _unnamed_arg;
-  HEAP[___p_addr] = ___p;
-  var _1 = HEAP[___p_addr];
-  HEAP[_0] = _1;
-  var _2 = HEAP[_0];
-  HEAP[_0] = _2;
-  var _3 = HEAP[_0];
-  HEAP[_retval] = _3;
-  __label__ = 0; /* _return */ 
-  var _retval1 = HEAP[_retval];
-  STACKTOP = STACK_STACK.pop();
-  return _retval1;
-}
-
-
-function __ZN3v_tC1Ev(_this) {
-  STACK_STACK.push(STACKTOP);
-  var __label__;
-  var _this_addr = STACKTOP; STACKTOP += 1;
-  var __alloca_point_ = 0;
-  HEAP[_this_addr] = _this;
-  __label__ = 0; /* _return */ 
-  STACKTOP = STACK_STACK.pop();
-  return;
-}
-
-
-function __ZNK3v_tplERKS_(_agg_result, _this, _v) {
-  STACK_STACK.push(STACKTOP);
-  var __label__;
-  var _this_addr = STACKTOP; STACKTOP += 1;
-  var _v_addr = STACKTOP; STACKTOP += 1;
-  var __alloca_point_ = 0;
-  HEAP[_this_addr] = _this;
-  HEAP[_v_addr] = _v;
-  var _0 = HEAP[_this_addr];
-  var _2 = HEAP[0 + _0+2*1];
-  var _3 = HEAP[_v_addr];
-  var _5 = HEAP[0 + _3+2*1];
-  var _6 = _2 + _5;
-  var _7 = HEAP[_this_addr];
-  var _9 = HEAP[0 + _7+1*1];
-  var _10 = HEAP[_v_addr];
-  var _12 = HEAP[0 + _10+1*1];
-  var _13 = _9 + _12;
-  var _14 = HEAP[_this_addr];
-  var _16 = HEAP[0 + _14+0*1];
-  var _17 = HEAP[_v_addr];
-  var _19 = HEAP[0 + _17+0*1];
-  var _20 = _16 + _19;
-  __ZN3v_tC1Eddd(_agg_result, _20, _13, _6);
-  __label__ = 0; /* _return */ 
-  STACKTOP = STACK_STACK.pop();
-  return;
-}
-
-
-function __ZNK3v_tmiERKS_(_agg_result, _this, _v) {
-  STACK_STACK.push(STACKTOP);
-  var __label__;
-  var _this_addr = STACKTOP; STACKTOP += 1;
-  var _v_addr = STACKTOP; STACKTOP += 1;
-  var __alloca_point_ = 0;
-  HEAP[_this_addr] = _this;
-  HEAP[_v_addr] = _v;
-  var _0 = HEAP[_this_addr];
-  var _2 = HEAP[0 + _0+2*1];
-  var _3 = HEAP[_v_addr];
-  var _5 = HEAP[0 + _3+2*1];
-  var _6 = _2 - _5;
-  var _7 = HEAP[_this_addr];
-  var _9 = HEAP[0 + _7+1*1];
-  var _10 = HEAP[_v_addr];
-  var _12 = HEAP[0 + _10+1*1];
-  var _13 = _9 - _12;
-  var _14 = HEAP[_this_addr];
-  var _16 = HEAP[0 + _14+0*1];
-  var _17 = HEAP[_v_addr];
-  var _19 = HEAP[0 + _17+0*1];
-  var _20 = _16 - _19;
-  __ZN3v_tC1Eddd(_agg_result, _20, _13, _6);
-  __label__ = 0; /* _return */ 
-  STACKTOP = STACK_STACK.pop();
-  return;
-}
-
-
-function __ZNK3v_tngEv(_agg_result, _this) {
-  STACK_STACK.push(STACKTOP);
-  var __label__;
-  var _this_addr = STACKTOP; STACKTOP += 1;
-  var __alloca_point_ = 0;
-  HEAP[_this_addr] = _this;
-  var _0 = HEAP[_this_addr];
-  var _2 = HEAP[0 + _0+2*1];
-  var _3 = -0.000000e+00 - _2;
-  var _4 = HEAP[_this_addr];
-  var _6 = HEAP[0 + _4+1*1];
-  var _7 = -0.000000e+00 - _6;
-  var _8 = HEAP[_this_addr];
-  var _10 = HEAP[0 + _8+0*1];
-  var _11 = -0.000000e+00 - _10;
-  __ZN3v_tC1Eddd(_agg_result, _11, _7, _3);
-  __label__ = 0; /* _return */ 
-  STACKTOP = STACK_STACK.pop();
-  return;
-}
-
-
-function __ZNK3v_tmlEd(_agg_result, _this, _d) {
-  STACK_STACK.push(STACKTOP);
-  var __label__;
-  var _this_addr = STACKTOP; STACKTOP += 1;
-  var _d_addr;
-  var __alloca_point_ = 0;
-  HEAP[_this_addr] = _this;
-  _d_addr = _d;
-  var _0 = HEAP[_this_addr];
-  var _2 = HEAP[0 + _0+2*1];
-  var _3 = _d_addr;
-  var _4 = _2 * _3;
-  var _5 = HEAP[_this_addr];
-  var _7 = HEAP[0 + _5+1*1];
-  var _8 = _d_addr;
-  var _9 = _7 * _8;
-  var _10 = HEAP[_this_addr];
-  var _12 = HEAP[0 + _10+0*1];
-  var _13 = _d_addr;
-  var _14 = _12 * _13;
-  __ZN3v_tC1Eddd(_agg_result, _14, _9, _4);
-  __label__ = 0; /* _return */ 
-  STACKTOP = STACK_STACK.pop();
-  return;
-}
-
-
-function __ZNK3v_t5crossERKS_(_agg_result, _this, _v) {
-  STACK_STACK.push(STACKTOP);
-  var __label__;
-  var _this_addr = STACKTOP; STACKTOP += 1;
-  var _v_addr = STACKTOP; STACKTOP += 1;
-  var __alloca_point_ = 0;
-  HEAP[_this_addr] = _this;
-  HEAP[_v_addr] = _v;
-  var _0 = HEAP[_this_addr];
-  var _2 = HEAP[0 + _0+0*1];
-  var _3 = HEAP[_v_addr];
-  var _5 = HEAP[0 + _3+1*1];
-  var _6 = _2 * _5;
-  var _7 = HEAP[_this_addr];
-  var _9 = HEAP[0 + _7+1*1];
-  var _10 = HEAP[_v_addr];
-  var _12 = HEAP[0 + _10+0*1];
-  var _13 = _9 * _12;
-  var _14 = _6 - _13;
-  var _15 = HEAP[_this_addr];
-  var _17 = HEAP[0 + _15+2*1];
-  var _18 = HEAP[_v_addr];
-  var _20 = HEAP[0 + _18+0*1];
-  var _21 = _17 * _20;
-  var _22 = HEAP[_this_addr];
-  var _24 = HEAP[0 + _22+0*1];
-  var _25 = HEAP[_v_addr];
-  var _27 = HEAP[0 + _25+2*1];
-  var _28 = _24 * _27;
-  var _29 = _21 - _28;
-  var _30 = HEAP[_this_addr];
-  var _32 = HEAP[0 + _30+1*1];
-  var _33 = HEAP[_v_addr];
-  var _35 = HEAP[0 + _33+2*1];
-  var _36 = _32 * _35;
-  var _37 = HEAP[_this_addr];
-  var _39 = HEAP[0 + _37+2*1];
-  var _40 = HEAP[_v_addr];
-  var _42 = HEAP[0 + _40+1*1];
-  var _43 = _39 * _42;
-  var _44 = _36 - _43;
-  __ZN3v_tC1Eddd(_agg_result, _44, _29, _14);
-  __label__ = 0; /* _return */ 
-  STACKTOP = STACK_STACK.pop();
-  return;
-}
-
-
-function __ZNK3v_t3dotERKS_(_this, _v) {
-  STACK_STACK.push(STACKTOP);
-  var __label__;
-  var _this_addr = STACKTOP; STACKTOP += 1;
-  var _v_addr = STACKTOP; STACKTOP += 1;
-  var _retval;
-  var _0;
-  var __alloca_point_ = 0;
-  HEAP[_this_addr] = _this;
-  HEAP[_v_addr] = _v;
-  var _1 = HEAP[_this_addr];
-  var _3 = HEAP[0 + _1+0*1];
-  var _4 = HEAP[_v_addr];
-  var _6 = HEAP[0 + _4+0*1];
-  var _7 = _3 * _6;
-  var _8 = HEAP[_this_addr];
-  var _10 = HEAP[0 + _8+1*1];
-  var _11 = HEAP[_v_addr];
-  var _13 = HEAP[0 + _11+1*1];
-  var _14 = _10 * _13;
-  var _15 = _7 + _14;
-  var _16 = HEAP[_this_addr];
-  var _18 = HEAP[0 + _16+2*1];
-  var _19 = HEAP[_v_addr];
-  var _21 = HEAP[0 + _19+2*1];
-  var _22 = _18 * _21;
-  _0 = _15 + _22;
-  _retval = _0;
-  __label__ = 0; /* _return */ 
-  var _retval1 = _retval;
-  STACKTOP = STACK_STACK.pop();
-  return _retval1;
-}
-
-
-function __ZSt3maxIdERKT_S2_S2_(___a, ___b) {
-  STACK_STACK.push(STACKTOP);
-  var __label__;
-  var ___a_addr = STACKTOP; STACKTOP += 1;
-  var ___b_addr = STACKTOP; STACKTOP += 1;
-  var _retval = STACKTOP; STACKTOP += 1;
-  var _0 = STACKTOP; STACKTOP += 1;
-  var __alloca_point_ = 0;
-  HEAP[___a_addr] = ___a;
-  HEAP[___b_addr] = ___b;
-  var _1 = HEAP[___a_addr];
-  var _2 = HEAP[_1];
-  var _3 = HEAP[___b_addr];
-  var _4 = HEAP[_3];
-  var _5 = 0+(_2 < _4);
-  if (_5) { __label__ = 1; /* _bb */  } else { __label__ = 2; /* _bb1 */  }
-  _bb: do { 
-    if (__label__ == 1) {
-      var _6 = HEAP[___b_addr];
-      HEAP[_0] = _6;
-      __label__ = 3; /* _bb2 */ break _bb;
-    }
-    else   if (__label__ == 2) {
-      var _7 = HEAP[___a_addr];
-      HEAP[_0] = _7;
-      __label__ = 3; /* _bb2 */ break _bb;
+  d = d;
+  STACKTOP = c;
+  return d
+}
+FUNCTION_TABLE[25] = Y;
+function Z(a, b) {
+  var c = STACKTOP;
+  STACKTOP += 9;
+  var d = c + 3, e, h, g = c + 6;
+  h = IHEAP[__ZL4pool];
+  a:for(;;) {
+    if(!(h < IHEAP[__ZL3end])) {
+      break a
     }
-  } while(0);
-  var _8 = HEAP[_0];
-  HEAP[_retval] = _8;
-  __label__ = 0; /* _return */ 
-  var _retval3 = HEAP[_retval];
-  STACKTOP = STACK_STACK.pop();
-  return _retval3;
-}
-
-
-function __ZSt3maxIiERKT_S2_S2_(___a, ___b) {
-  STACK_STACK.push(STACKTOP);
-  var __label__;
-  var ___a_addr = STACKTOP; STACKTOP += 1;
-  var ___b_addr = STACKTOP; STACKTOP += 1;
-  var _retval = STACKTOP; STACKTOP += 1;
-  var _0 = STACKTOP; STACKTOP += 1;
-  var __alloca_point_ = 0;
-  HEAP[___a_addr] = ___a;
-  HEAP[___b_addr] = ___b;
-  var _1 = HEAP[___a_addr];
-  var _2 = HEAP[_1];
-  var _3 = HEAP[___b_addr];
-  var _4 = HEAP[_3];
-  var _5 = 0+(_2 < _4);
-  if (_5) { __label__ = 1; /* _bb */  } else { __label__ = 2; /* _bb1 */  }
-  _bb: do { 
-    if (__label__ == 1) {
-      var _6 = HEAP[___b_addr];
-      HEAP[_0] = _6;
-      __label__ = 3; /* _bb2 */ break _bb;
-    }
-    else   if (__label__ == 2) {
-      var _7 = HEAP[___a_addr];
-      HEAP[_0] = _7;
-      __label__ = 3; /* _bb2 */ break _bb;
-    }
-  } while(0);
-  var _8 = HEAP[_0];
-  HEAP[_retval] = _8;
-  __label__ = 0; /* _return */ 
-  var _retval3 = HEAP[_retval];
-  STACKTOP = STACK_STACK.pop();
-  return _retval3;
-}
-
-
-function ___tcf_0(_unnamed_arg) {
-  STACK_STACK.push(STACKTOP);
-  var __label__;
-  var _unnamed_arg_addr = STACKTOP; STACKTOP += 1;
-  var __alloca_point_ = 0;
-  HEAP[_unnamed_arg_addr] = _unnamed_arg;
-  __ZNSt8ios_base4InitD1Ev(__ZStL8__ioinit);
-  __label__ = 0; /* _return */ 
-  STACKTOP = STACK_STACK.pop();
-  return;
-}
-
-
-function __ZN3v_tC1Eddd(_this, _a, _b, _c) {
-  STACK_STACK.push(STACKTOP);
-  var __label__;
-  var _this_addr = STACKTOP; STACKTOP += 1;
-  var _a_addr;
-  var _b_addr;
-  var _c_addr;
-  var __alloca_point_ = 0;
-  HEAP[_this_addr] = _this;
-  _a_addr = _a;
-  _b_addr = _b;
-  _c_addr = _c;
-  var _0 = HEAP[_this_addr];
-  var _1 = _0+0*1;
-  HEAP[_1] = _a_addr;
-  var _3 = HEAP[_this_addr];
-  var _4 = _3+1*1;
-  HEAP[_4] = _b_addr;
-  var _6 = HEAP[_this_addr];
-  var _7 = _6+2*1;
-  HEAP[_7] = _c_addr;
-  __label__ = 0; /* _return */ 
-  STACKTOP = STACK_STACK.pop();
-  return;
-}
-
-
-function __ZN5ray_tC1ERK3v_t(_this, _v) {
-  STACK_STACK.push(STACKTOP);
-  var __label__;
-  var _this_addr = STACKTOP; STACKTOP += 1;
-  var _v_addr = STACKTOP; STACKTOP += 1;
-  var __alloca_point_ = 0;
-  HEAP[_this_addr] = _this;
-  HEAP[_v_addr] = _v;
-  var _0 = HEAP[_this_addr];
-  var _1 = _0+0*3;
-  var _2 = HEAP[_v_addr];
-  var _3 = _1+0*1;
-  var _5 = HEAP[0 + _2+0*1];
-  HEAP[_3] = _5;
-  var _6 = _1+1*1;
-  var _8 = HEAP[0 + _2+1*1];
-  HEAP[_6] = _8;
-  var _9 = _1+2*1;
-  var _11 = HEAP[0 + _2+2*1];
-  HEAP[_9] = _11;
-  var _12 = HEAP[_this_addr];
-  var _13 = _12+1*3;
-  __ZN3v_tC1Ev(_13);
-  __label__ = 0; /* _return */ 
-  STACKTOP = STACK_STACK.pop();
-  return;
-}
-
-
-function __ZN5ray_tC1ERK3v_tS2_(_this, _v, _w) {
-  STACK_STACK.push(STACKTOP);
-  var __label__;
-  var _this_addr = STACKTOP; STACKTOP += 1;
-  var _v_addr = STACKTOP; STACKTOP += 1;
-  var _w_addr = STACKTOP; STACKTOP += 1;
-  var __alloca_point_ = 0;
-  HEAP[_this_addr] = _this;
-  HEAP[_v_addr] = _v;
-  HEAP[_w_addr] = _w;<