WCudaMSE/Student_Cuda_Image/src/cpp/core/00_Rippling_warmup/rippling0FreeGL.cpp

   1 #include <iostream>
   2 #include "cudaTools.h"
   3 #include "Device.h"
   4 #include "MathTools.h"
   5
   6 #include "Chronos.h"
   7
   8 using std::cout;
   9 using std::endl;
  10
  11 /*----------------------------------------------------------------------*\
  12  |*                     Declaration                                     *|
  13  \*---------------------------------------------------------------------*/
  14
  15 /*--------------------------------------*\
  16  |*             Imported                *|
  17  \*-------------------------------------*/
  18
  19 extern void launchKernelRippling0(uchar4* ptrDevPixels, int w, int h, float t);
  20
  21 /*--------------------------------------*\
  22  |*             Public                  *|
  23  \*-------------------------------------*/
  24
  25 int rippling0FreeGL(int itmax);
  26
  27 /*--------------------------------------*\
  28  |*             Private                 *|
  29  \*-------------------------------------*/
  30
  31 /*----------------------------------------------------------------------*\
  32  |*                     Implementation                                  *|
  33  \*---------------------------------------------------------------------*/
  34
  35 /*--------------------------------------*\
  36  |*             Public                  *|
  37  \*-------------------------------------*/
  38
  39 /**
  40  * Hyp: itmax suffisamment grand pour que timeElapse soit significatif
  41  */
  42 int rippling0FreeGL(int itmax)
  43     {
  44     cout<<"\n[Rippling0] : FreeGL running ..."<<endl;
  45
  46     int h = 16 * 60;
  47     int w = h;
  48
  49     uchar4* ptrDevImage;
  50     size_t size = w * h * sizeof(uchar4);
  51     HANDLE_ERROR(cudaMalloc((void**) &ptrDevImage, size));
  52     HANDLE_ERROR(cudaMemset(ptrDevImage, 0, size));
  53
  54     int i = 0;
  55     float t = 0;
  56     float dt = 2 * PI / 10;
  57     Chronos chrono;
  58
  59     while (i < itmax)
  60         {
  61         launchKernelRippling0(ptrDevImage, w, h, t);
  62         Device::checkKernelError("Rippling0");
  63         Device::synchronize();
  64
  65         t += dt;
  66         i++;
  67         }
  68
  69     chrono.stop();
  70     HANDLE_ERROR(cudaFree(ptrDevImage));
  71
  72     double timeElapseS = chrono.getDeltaTime();
  73     int fps = itmax / timeElapseS;
  74
  75     cout << "fps : "<<fps<<endl;
  76
  77     return fps;
  78     }
  79
  80 /*--------------------------------------*\
  81  |*             Private                 *|
  82  \*-------------------------------------*/
  83
  84 /*----------------------------------------------------------------------*\
  85  |*                     End                                             *|
  86  \*---------------------------------------------------------------------*/
  87