michael@0: // Bug 977853 -- Pared down version of script exhibiting negative
michael@0: // interaction with convert to doubles optimization. See bug for gory
michael@0: // details.
michael@0: 
michael@0: if (!getBuildConfiguration().parallelJS)
michael@0:   quit();
michael@0: 
michael@0: load(libdir + "parallelarray-helpers.js")
michael@0: 
michael@0: var numIters = 5;
michael@0: var golden_output;
michael@0: 
michael@0: function PJS_div4(v, s)
michael@0: {
michael@0:   return [ v[0]/s, v[1]/s, v[2]/s, v[3]/s ];
michael@0: }
michael@0: 
michael@0: function PJS_normalized(v)
michael@0: {
michael@0:   var d = Math.sqrt(v[0] * v[0] + v[1] * v[1] + v[2] * v[2]);
michael@0:   d = d > 0.0 ? d : 1.0;
michael@0:   var result = [ v[0]/d, v[1]/d, v[2]/d, 1.0 ];
michael@0:   return result;
michael@0: }
michael@0: 
michael@0: // This is the elemental function passed to mapPar
michael@0: function PJS_displace(p)
michael@0: {
michael@0:   var position = [p[0], p[1], p[2], 1.0];
michael@0:   var normal = position;
michael@0:   var roughness = 0.025 / 0.35;
michael@0:   normal = PJS_normalized(PJS_div4(normal, roughness));
michael@0:   return null;
michael@0: }
michael@0: var NUM_VERTEX_COMPONENTS = 3;
michael@0: var initPos, nVertices;
michael@0: var userData = {
michael@0:   nVertices : 25, //2880,
michael@0:   initPos : [],
michael@0: };
michael@0: function setup() {
michael@0:   for(var k = 0; k < NUM_VERTEX_COMPONENTS*userData.nVertices; k++) {
michael@0:     userData.initPos[k] = k/1000;
michael@0:   }
michael@0:   nVertices	= userData.nVertices;
michael@0:   initPos		= new Array(nVertices);
michael@0:   for(var i=0, j=0; i<nVertices; i++, j+=NUM_VERTEX_COMPONENTS) {
michael@0: 	initPos[i] = [userData.initPos[j],
michael@0: 				  userData.initPos[j+1],
michael@0: 				  userData.initPos[j+2]];
michael@0:   }
michael@0: }
michael@0: function SimulatePJS() {
michael@0:   var curPosAndNor;
michael@0: 
michael@0:   // Measure Parallel Execution
michael@0:   assertParallelExecSucceeds(
michael@0:     function(m) { return initPos.mapPar(PJS_displace, m); },
michael@0:     function() { });
michael@0: }
michael@0: var start_time, elapsed_parallel = 0, elapsed_sequential = 0;
michael@0: setup();
michael@0: SimulatePJS();