tests/benchmarks/graphics.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        graphics.cpp
   3 // Purpose:     Some benchmarks for measuring graphics operations performance
   4 // Author:      Vadim Zeitlin
   5 // Created:     2008-04-13
   6 // RCS-ID:      $Id$
   7 // Copyright:   (c) 2008 Vadim Zeitlin <vadim@wxwidgets.org>
   8 // Licence:     wxWindows license
   9 /////////////////////////////////////////////////////////////////////////////
  10
  11 #include "wx/app.h"
  12 #include "wx/frame.h"
  13 #include "wx/cmdline.h"
  14 #include "wx/dcclient.h"
  15 #include "wx/dcmemory.h"
  16 #include "wx/stopwatch.h"
  17
  18 struct GraphicsBenchmarkOptions
  19 {
  20     GraphicsBenchmarkOptions()
  21     {
  22         mapMode = 0;
  23         penWidth = 0;
  24
  25         width = 800;
  26         height = 600;
  27
  28         numLines = 10000;
  29     }
  30
  31     long mapMode,
  32          penWidth,
  33          width,
  34          height,
  35          numLines;
  36 } opts;
  37
  38 class GraphicsBenchmarkFrame : public wxFrame
  39 {
  40 public:
  41     GraphicsBenchmarkFrame()
  42         : wxFrame(NULL, wxID_ANY, "wxWidgets Graphics Benchmark")
  43     {
  44         Connect(wxEVT_PAINT,
  45                 wxPaintEventHandler(GraphicsBenchmarkFrame::OnPaint));
  46
  47         Show();
  48         SetClientSize(opts.width, opts.height);
  49         wxClientDC dc(this);
  50         BenchmarkLines("client", dc);
  51
  52         wxBitmap bmp(opts.width, opts.height);
  53         wxMemoryDC dc2(bmp);
  54         BenchmarkLines("memory", dc2);
  55     }
  56
  57 protected:
  58     void OnPaint(wxPaintEvent& WXUNUSED(event))
  59     {
  60         wxPaintDC dc(this);
  61
  62         BenchmarkLines(" paint", dc);
  63
  64         wxTheApp->ExitMainLoop();
  65     }
  66
  67     void BenchmarkLines(const char *msg, wxDC& dc)
  68     {
  69         if ( opts.mapMode != 0 )
  70             dc.SetMapMode(opts.mapMode);
  71         if ( opts.penWidth != 0 )
  72             dc.SetPen(wxPen(*wxWHITE, opts.penWidth));
  73
  74         wxPrintf("Benchmarking %s DC: ", msg);
  75
  76         wxStopWatch sw;
  77         int x = 0,
  78             y = 0;
  79         for ( int n = 0; n < opts.numLines; n++ )
  80         {
  81             int x1 = rand() % opts.width,
  82                 y1 = rand() % opts.height;
  83
  84             dc.DrawLine(x, y, x1, y1);
  85
  86             x = x1;
  87             y = y1;
  88         }
  89
  90         const long t = sw.Time();
  91
  92         wxPrintf("%d lines done in %lums = %gus/line\n",
  93                  opts.numLines, t, (1000. * t)/opts.numLines);
  94     }
  95 };
  96
  97 class GraphicsBenchmarkApp : public wxApp
  98 {
  99 public:
 100     virtual void OnInitCmdLine(wxCmdLineParser& parser)
 101     {
 102         static const wxCmdLineEntryDesc desc[] =
 103         {
 104             { wxCMD_LINE_OPTION, "m", "map-mode", "", wxCMD_LINE_VAL_NUMBER },
 105             { wxCMD_LINE_OPTION, "p", "pen-width", "", wxCMD_LINE_VAL_NUMBER },
 106             { wxCMD_LINE_OPTION, "w", "width", "", wxCMD_LINE_VAL_NUMBER },
 107             { wxCMD_LINE_OPTION, "h", "height", "", wxCMD_LINE_VAL_NUMBER },
 108             { wxCMD_LINE_OPTION, "L", "lines", "", wxCMD_LINE_VAL_NUMBER },
 109         };
 110
 111         parser.SetDesc(desc);
 112     }
 113
 114     virtual bool OnCmdLineParsed(wxCmdLineParser& parser)
 115     {
 116         if ( parser.Found("m", &opts.mapMode) &&
 117                 (opts.mapMode < 1 || opts.mapMode > wxMM_METRIC) )
 118             return false;
 119         if ( parser.Found("p", &opts.penWidth) && opts.penWidth < 1 )
 120             return false;
 121         if ( parser.Found("w", &opts.width) && opts.width < 1 )
 122             return false;
 123         if ( parser.Found("h", &opts.height) && opts.height < 1 )
 124             return false;
 125         if ( parser.Found("L", &opts.numLines) && opts.numLines < 1 )
 126             return false;
 127
 128         return true;
 129     }
 130
 131     virtual bool OnInit()
 132     {
 133         if ( !wxApp::OnInit() )
 134             return false;
 135
 136         new GraphicsBenchmarkFrame;
 137
 138         return true;
 139     }
 140 };
 141
 142 IMPLEMENT_APP_CONSOLE(GraphicsBenchmarkApp)