kc3-lang/angle/util/random_utils.cpp

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• Author : Jamie Madill
  Date : 2014-09-24 10:26:49
  Hash : ea0e8733
  Message : Add a point sprite benchmark. This benchmark will attempt to reproduce the slowdown we see in D3D11 on the turbulenz GPU particles demo. BUG=angle:705 Change-Id: I9c4c2f09d4282feae30f448fd374cdbb6bceae9b Reviewed-on: https://chromium-review.googlesource.com/216467 Tested-by: Jamie Madill <jmadill@chromium.org> Reviewed-by: Geoff Lang <geofflang@chromium.org>

• util/random_utils.cpp

• //
  // Copyright (c) 2014 The ANGLE Project Authors. All rights reserved.
  // Use of this source code is governed by a BSD-style license that can be
  // found in the LICENSE file.
  //
  
  #include "random_utils.h"
  #include <time.h>
  #include <cstdlib>
  
  float RandomBetween(float min, float max)
  {
      static bool randInitialized = false;
      if (!randInitialized)
      {
          srand(time(NULL));
          randInitialized = true;
      }
  
      const size_t divisor = 10000;
      return min + ((rand() % divisor) / static_cast<float>(divisor)) * (max - min);
  }