The Tor Browser: js/src/jit-test/tests/sunspider/check-3d-raytrace.js@6474c204b198 (annotated)

js/src/jit-test/tests/sunspider/check-3d-raytrace.js@6474c204b198 (annotated)

js/src/jit-test/tests/sunspider/check-3d-raytrace.js

Wed, 31 Dec 2014 06:09:35 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Wed, 31 Dec 2014 06:09:35 +0100
changeset 0: 6474c204b198
permissions: -rw-r--r--

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

 /*
  * Copyright (C) 2007 Apple Inc.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
  *
  * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 function createVector(x,y,z) {
     return new Array(x,y,z);
 }
 function sqrLengthVector(self) {
     return self[0] * self[0] + self[1] * self[1] + self[2] * self[2];
 }
 function lengthVector(self) {
     return Math.sqrt(self[0] * self[0] + self[1] * self[1] + self[2] * self[2]);
 }
 function addVector(self, v) {
     self[0] += v[0];
     self[1] += v[1];
     self[2] += v[2];
     return self;
 }
 function subVector(self, v) {
     self[0] -= v[0];
     self[1] -= v[1];
     self[2] -= v[2];
     return self;
 }
 function scaleVector(self, scale) {
     self[0] *= scale;
     self[1] *= scale;
     self[2] *= scale;
     return self;
 }
 function normaliseVector(self) {
     var len = Math.sqrt(self[0] * self[0] + self[1] * self[1] + self[2] * self[2]);
     self[0] /= len;
     self[1] /= len;
     self[2] /= len;
     return self;
 }
 function add(v1, v2) {
     return new Array(v1[0] + v2[0], v1[1] + v2[1], v1[2] + v2[2]);
 }
 function sub(v1, v2) {
     return new Array(v1[0] - v2[0], v1[1] - v2[1], v1[2] - v2[2]);
 }
 function scalev(v1, v2) {
     return new Array(v1[0] * v2[0], v1[1] * v2[1], v1[2] * v2[2]);
 }
 function dot(v1, v2) {
     return v1[0] * v2[0] + v1[1] * v2[1] + v1[2] * v2[2];
 }
 function scale(v, scale) {
     return [v[0] * scale, v[1] * scale, v[2] * scale];
 }
 function cross(v1, v2) {
     return [v1[1] * v2[2] - v1[2] * v2[1],
             v1[2] * v2[0] - v1[0] * v2[2],
             v1[0] * v2[1] - v1[1] * v2[0]];
 }
 function normalise(v) {
     var len = lengthVector(v);
     return [v[0] / len, v[1] / len, v[2] / len];
 }
 function transformMatrix(self, v) {
     var vals = self;
     var x  = vals[0] * v[0] + vals[1] * v[1] + vals[2] * v[2] + vals[3];
     var y  = vals[4] * v[0] + vals[5] * v[1] + vals[6] * v[2] + vals[7];
     var z  = vals[8] * v[0] + vals[9] * v[1] + vals[10] * v[2] + vals[11];
     return [x, y, z];
 }
 function invertMatrix(self) {
     var temp = new Array(16);
     var tx = -self[3];
     var ty = -self[7];
     var tz = -self[11];
     for (h = 0; h < 3; h++)
         for (v = 0; v < 3; v++)
             temp[h + v * 4] = self[v + h * 4];
     for (i = 0; i < 11; i++)
         self[i] = temp[i];
     self[3] = tx * self[0] + ty * self[1] + tz * self[2];
     self[7] = tx * self[4] + ty * self[5] + tz * self[6];
     self[11] = tx * self[8] + ty * self[9] + tz * self[10];
     return self;
 }
 // Triangle intersection using barycentric coord method
 function Triangle(p1, p2, p3) {
     var edge1 = sub(p3, p1);
     var edge2 = sub(p2, p1);
     var normal = cross(edge1, edge2);
     if (Math.abs(normal[0]) > Math.abs(normal[1]))
         if (Math.abs(normal[0]) > Math.abs(normal[2]))
             this.axis = 0;
         else
             this.axis = 2;
     else
         if (Math.abs(normal[1]) > Math.abs(normal[2]))
             this.axis = 1;
         else
             this.axis = 2;
     var u = (this.axis + 1) % 3;
     var v = (this.axis + 2) % 3;
     var u1 = edge1[u];
     var v1 = edge1[v];
     var u2 = edge2[u];
     var v2 = edge2[v];
     this.normal = normalise(normal);
     this.nu = normal[u] / normal[this.axis];
     this.nv = normal[v] / normal[this.axis];
     this.nd = dot(normal, p1) / normal[this.axis];
     var det = u1 * v2 - v1 * u2;
     this.eu = p1[u];
     this.ev = p1[v];
     this.nu1 = u1 / det;
     this.nv1 = -v1 / det;
     this.nu2 = v2 / det;
     this.nv2 = -u2 / det;
     this.material = [0.7, 0.7, 0.7];
 }
 Triangle.prototype.intersect = function(orig, dir, near, far) {
     var u = (this.axis + 1) % 3;
     var v = (this.axis + 2) % 3;
     var d = dir[this.axis] + this.nu * dir[u] + this.nv * dir[v];
     var t = (this.nd - orig[this.axis] - this.nu * orig[u] - this.nv * orig[v]) / d;
     if (t < near || t > far)
         return null;
     var Pu = orig[u] + t * dir[u] - this.eu;
     var Pv = orig[v] + t * dir[v] - this.ev;
     var a2 = Pv * this.nu1 + Pu * this.nv1;
     if (a2 < 0)
         return null;
     var a3 = Pu * this.nu2 + Pv * this.nv2;
     if (a3 < 0)
         return null;
     if ((a2 + a3) > 1)
         return null;
     return t;
 }
 function Scene(a_triangles) {
     this.triangles = a_triangles;
     this.lights = [];
     this.ambient = [0,0,0];
     this.background = [0.8,0.8,1];
 }
 var zero = new Array(0,0,0);
 Scene.prototype.intersect = function(origin, dir, near, far) {
     var closest = null;
     for (i = 0; i < this.triangles.length; i++) {
         var triangle = this.triangles[i];
         var d = triangle.intersect(origin, dir, near, far);
         if (d == null || d > far || d < near)
             continue;
         far = d;
         closest = triangle;
     }
     if (!closest)
         return [this.background[0],this.background[1],this.background[2]];
     var normal = closest.normal;
     var hit = add(origin, scale(dir, far));
     if (dot(dir, normal) > 0)
         normal = [-normal[0], -normal[1], -normal[2]];
     var colour = null;
     if (closest.shader) {
         colour = closest.shader(closest, hit, dir);
     } else {
         colour = closest.material;
     }
     // do reflection
     var reflected = null;
     if (colour.reflection > 0.001) {
         var reflection = addVector(scale(normal, -2*dot(dir, normal)), dir);
         reflected = this.intersect(hit, reflection, 0.0001, 1000000);
         if (colour.reflection >= 0.999999)
             return reflected;
     }
     var l = [this.ambient[0], this.ambient[1], this.ambient[2]];
     for (var i = 0; i < this.lights.length; i++) {
         var light = this.lights[i];
         var toLight = sub(light, hit);
         var distance = lengthVector(toLight);
         scaleVector(toLight, 1.0/distance);
         distance -= 0.0001;
         if (this.blocked(hit, toLight, distance))
             continue;
         var nl = dot(normal, toLight);
         if (nl > 0)
             addVector(l, scale(light.colour, nl));
     }
     l = scalev(l, colour);
     if (reflected) {
         l = addVector(scaleVector(l, 1 - colour.reflection), scaleVector(reflected, colour.reflection));
     }
     return l;
 }
 Scene.prototype.blocked = function(O, D, far) {
     var near = 0.0001;
     var closest = null;
     for (i = 0; i < this.triangles.length; i++) {
         var triangle = this.triangles[i];
         var d = triangle.intersect(O, D, near, far);
         if (d == null || d > far || d < near)
             continue;
         return true;
     }
     return false;
 }
 // this camera code is from notes i made ages ago, it is from *somewhere* -- i cannot remember where
 // that somewhere is
 function Camera(origin, lookat, up) {
     var zaxis = normaliseVector(subVector(lookat, origin));
     var xaxis = normaliseVector(cross(up, zaxis));
     var yaxis = normaliseVector(cross(xaxis, subVector([0,0,0], zaxis)));
     var m = new Array(16);
     m[0] = xaxis[0]; m[1] = xaxis[1]; m[2] = xaxis[2];
     m[4] = yaxis[0]; m[5] = yaxis[1]; m[6] = yaxis[2];
     m[8] = zaxis[0]; m[9] = zaxis[1]; m[10] = zaxis[2];
     invertMatrix(m);
     m[3] = 0; m[7] = 0; m[11] = 0;
     this.origin = origin;
     this.directions = new Array(4);
     this.directions[0] = normalise([-0.7,  0.7, 1]);
     this.directions[1] = normalise([ 0.7,  0.7, 1]);
     this.directions[2] = normalise([ 0.7, -0.7, 1]);
     this.directions[3] = normalise([-0.7, -0.7, 1]);
     this.directions[0] = transformMatrix(m, this.directions[0]);
     this.directions[1] = transformMatrix(m, this.directions[1]);
     this.directions[2] = transformMatrix(m, this.directions[2]);
     this.directions[3] = transformMatrix(m, this.directions[3]);
 }
 Camera.prototype.generateRayPair = function(y) {
     rays = new Array(new Object(), new Object());
     rays[0].origin = this.origin;
     rays[1].origin = this.origin;
     rays[0].dir = addVector(scale(this.directions[0], y), scale(this.directions[3], 1 - y));
     rays[1].dir = addVector(scale(this.directions[1], y), scale(this.directions[2], 1 - y));
     return rays;
 }
 function renderRows(camera, scene, pixels, width, height, starty, stopy) {
     for (var y = starty; y < stopy; y++) {
         var rays = camera.generateRayPair(y / height);
         for (var x = 0; x < width; x++) {
             var xp = x / width;
             var origin = addVector(scale(rays[0].origin, xp), scale(rays[1].origin, 1 - xp));
             var dir = normaliseVector(addVector(scale(rays[0].dir, xp), scale(rays[1].dir, 1 - xp)));
             var l = scene.intersect(origin, dir);
             pixels[y][x] = l;
         }
     }
 }
 Camera.prototype.render = function(scene, pixels, width, height) {
     var cam = this;
     var row = 0;
     renderRows(cam, scene, pixels, width, height, 0, height);
 }
 function raytraceScene()
 {
     var numTriangles = 2 * 6;
     var triangles = new Array();//numTriangles);
     var tfl = createVector(-10,  10, -10);
     var tfr = createVector( 10,  10, -10);
     var tbl = createVector(-10,  10,  10);
     var tbr = createVector( 10,  10,  10);
     var bfl = createVector(-10, -10, -10);
     var bfr = createVector( 10, -10, -10);
     var bbl = createVector(-10, -10,  10);
     var bbr = createVector( 10, -10,  10);
     // cube!!!
     // front
     var i = 0;
     triangles[i++] = new Triangle(tfl, tfr, bfr);
     triangles[i++] = new Triangle(tfl, bfr, bfl);
     // back
     triangles[i++] = new Triangle(tbl, tbr, bbr);
     triangles[i++] = new Triangle(tbl, bbr, bbl);
     //        triangles[i-1].material = [0.7,0.2,0.2];
     //            triangles[i-1].material.reflection = 0.8;
     // left
     triangles[i++] = new Triangle(tbl, tfl, bbl);
     //            triangles[i-1].reflection = 0.6;
     triangles[i++] = new Triangle(tfl, bfl, bbl);
     //            triangles[i-1].reflection = 0.6;
     // right
     triangles[i++] = new Triangle(tbr, tfr, bbr);
     triangles[i++] = new Triangle(tfr, bfr, bbr);
     // top
     triangles[i++] = new Triangle(tbl, tbr, tfr);
     triangles[i++] = new Triangle(tbl, tfr, tfl);
     // bottom
     triangles[i++] = new Triangle(bbl, bbr, bfr);
     triangles[i++] = new Triangle(bbl, bfr, bfl);
     //Floor!!!!
     var green = createVector(0.0, 0.4, 0.0);
     var grey = createVector(0.4, 0.4, 0.4);
     grey.reflection = 1.0;
     var floorShader = function(tri, pos, view) {
         var x = ((pos[0]/32) % 2 + 2) % 2;
         var z = ((pos[2]/32 + 0.3) % 2 + 2) % 2;
         if (x < 1 != z < 1) {
             //in the real world we use the fresnel term...
             //    var angle = 1-dot(view, tri.normal);
             //   angle *= angle;
             //  angle *= angle;
             // angle *= angle;
             //grey.reflection = angle;
             return grey;
         } else
             return green;
     }
     var ffl = createVector(-1000, -30, -1000);
     var ffr = createVector( 1000, -30, -1000);
     var fbl = createVector(-1000, -30,  1000);
     var fbr = createVector( 1000, -30,  1000);
     triangles[i++] = new Triangle(fbl, fbr, ffr);
     triangles[i-1].shader = floorShader;
     triangles[i++] = new Triangle(fbl, ffr, ffl);
     triangles[i-1].shader = floorShader;
     var _scene = new Scene(triangles);
     _scene.lights[0] = createVector(20, 38, -22);
     _scene.lights[0].colour = createVector(0.7, 0.3, 0.3);
     _scene.lights[1] = createVector(-23, 40, 17);
     _scene.lights[1].colour = createVector(0.7, 0.3, 0.3);
     _scene.lights[2] = createVector(23, 20, 17);
     _scene.lights[2].colour = createVector(0.7, 0.7, 0.7);
     _scene.ambient = createVector(0.1, 0.1, 0.1);
     //  _scene.background = createVector(0.7, 0.7, 1.0);
     var size = 30;
     var pixels = new Array();
     for (var y = 0; y < size; y++) {
         pixels[y] = new Array();
         for (var x = 0; x < size; x++) {
             pixels[y][x] = 0;
         }
     }
     var _camera = new Camera(createVector(-40, 40, 40), createVector(0, 0, 0), createVector(0, 1, 0));
     _camera.render(_scene, pixels, size, size);
     return pixels;
 }
 function arrayToCanvasCommands(pixels)
 {
     var s = '<canvas id="renderCanvas" width="30px" height="30px"></canvas><scr' + 'ipt>\nvar pixels = [';
     var size = 30;
     for (var y = 0; y < size; y++) {
         s += "[";
         for (var x = 0; x < size; x++) {
             s += "[" + pixels[y][x] + "],";
         }
         s+= "],";
     }
     s += '];\n    var canvas = document.getElementById("renderCanvas").getContext("2d");\n\
 \n\
 \n\
     var size = 30;\n\
     canvas.fillStyle = "red";\n\
     canvas.fillRect(0, 0, size, size);\n\
     canvas.scale(1, -1);\n\
     canvas.translate(0, -size);\n\
 \n\
     if (!canvas.setFillColor)\n\
         canvas.setFillColor = function(r, g, b, a) {\n\
             this.fillStyle = "rgb("+[Math.floor(r * 255), Math.floor(g * 255), Math.floor(b * 255)]+")";\n\
     }\n\
 \n\
 for (var y = 0; y < size; y++) {\n\
   for (var x = 0; x < size; x++) {\n\
     var l = pixels[y][x];\n\
     canvas.setFillColor(l[0], l[1], l[2], 1);\n\
     canvas.fillRect(x, y, 1, 1);\n\
   }\n\
 }</scr' + 'ipt>';
     return s;
 }
 testOutput = arrayToCanvasCommands(raytraceScene());
 expected = '<canvas id="renderCanvas" width="30px" height="30px"></canvas><script>\nvar pixels = 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[0.8,0.8,1],[0.8,0.8,1],[0.8,0.8,1],[0.8,0.8,1],[0.8,0.8,1],[0.8,0.8,1],[0.8,0.8,1],[0.8,0.8,1],[0.8,0.8,1],[0.8,0.8,1],[0.8,0.8,1],[0.8,0.8,1],[0.8,0.8,1],[0.8,0.8,1],[0.8,0.8,1],[0.8,0.8,1],[0.8,0.8,1],[0.8,0.8,1],[0.8,0.8,1],[0.8,0.8,1],[0.8,0.8,1],[0.8,0.8,1],[0.8,0.8,1],],];\n    var canvas = document.getElementById("renderCanvas").getContext("2d");\n\n\n    var size = 30;\n    canvas.fillStyle = "red";\n    canvas.fillRect(0, 0, size, size);\n    canvas.scale(1, -1);\n    canvas.translate(0, -size);\n\n    if (!canvas.setFillColor)\n        canvas.setFillColor = function(r, g, b, a) {\n            this.fillStyle = "rgb("+[Math.floor(r * 255), Math.floor(g * 255), Math.floor(b * 255)]+")";\n    }\n\nfor (var y = 0; y < size; y++) {\n  for (var x = 0; x < size; x++) {\n    var l = pixels[y][x];\n    canvas.setFillColor(l[0], l[1], l[2], 1);\n    canvas.fillRect(x, y, 1, 1);\n  }\n}</script>';
 assertEq(testOutput, expected)