src/main.h

   1 #include "common.h"
   2
   3 #include "document.h"
   4 #include "view.h"
   5 #include "screen.h"
   6 #include <unistd.h>
   7
   8
   9 using namespace std;
  10 using namespace IPDF;
  11
  12 inline void OverlayBMP(Document & doc, const char * input, const char * output, const Rect & bounds = Rect(0,0,1,1), const Colour & c = Colour(0.f,0.f,0.f,1.f))
  13 {
  14
  15         Screen scr;
  16         View view(doc, scr, bounds, c);
  17         if (input != NULL)
  18                 scr.RenderBMP(input);
  19         view.Render();
  20         if (output != NULL)
  21                 scr.ScreenShot(output);
  22         scr.Present();
  23 }
  24
  25 inline void MainLoop(Document & doc, const Rect & bounds = Rect(0,0,1,1), const Colour & c = Colour(0.f,0.f,0.f,1.f))
  26 {
  27         // order is important... segfaults occur when screen (which inits GL) is not constructed first -_-
  28         Screen scr;
  29         View view(doc,scr, bounds, c);
  30         scr.DebugFontInit("DejaVuSansMono.ttf");
  31         scr.SetMouseHandler([&](int x, int y, int buttons, int wheel) // [?] wtf
  32         {
  33                 static bool oldButtonDown = false;
  34                 static int oldx, oldy;
  35                 if (buttons == 3 && !oldButtonDown)
  36                 {
  37                         oldButtonDown = true;
  38                         view.ToggleGPUTransform();
  39                         oldx = x;
  40                         oldy = y;
  41                         return;
  42                 }
  43                 if (buttons == 2 && !oldButtonDown)
  44                 {
  45                         oldButtonDown = true;
  46                         view.ToggleGPURendering();
  47                         oldx = x;
  48                         oldy = y;
  49                 }
  50                 if (buttons && !oldButtonDown)
  51                 {
  52                         // We're beginning a drag.
  53                         oldButtonDown = true;
  54                         oldx = x;
  55                         oldy = y;
  56                         scr.SetMouseCursor(Screen::CursorMove);
  57                 }
  58                 if (buttons)
  59                 {
  60                         view.Translate(Real(oldx-x)/Real(scr.ViewportWidth()), Real(oldy-y)/Real(scr.ViewportHeight()));
  61                 }
  62                 else
  63                 {
  64                         oldButtonDown = false;
  65                         scr.SetMouseCursor(Screen::CursorArrow);
  66                 }
  67                 oldx = x;
  68                 oldy = y;
  69
  70                 if (wheel)
  71                 {
  72                         view.ScaleAroundPoint(Real(x)/Real(scr.ViewportWidth()),Real(y)/Real(scr.ViewportHeight()), expf(-wheel/20.f));
  73                 }
  74         }
  75         );
  76
  77         double total_cpu_time = 0;
  78         double total_gpu_time = 0;
  79         double total_real_time = 0;
  80         struct timespec real_clock_start;
  81         struct timespec real_clock_now;
  82         struct timespec real_clock_prev;
  83         clock_gettime(CLOCK_MONOTONIC_RAW, &real_clock_start);
  84         real_clock_now = real_clock_start;
  85         double frames = 0;
  86         double data_rate = -1; // period between data output to stdout (if <= 0 there will be no output)
  87         uint64_t data_points = 0;
  88         setbuf(stdout, NULL);
  89         while (scr.PumpEvents())
  90         {
  91                 real_clock_prev = real_clock_now;
  92                 ++frames;
  93                 scr.Clear();
  94                 //view.ForceBoundsDirty();
  95                 //view.ForceBufferDirty();
  96                 //view.ForceRenderDirty();
  97
  98                 view.Render(scr.ViewportWidth(), scr.ViewportHeight());
  99
 100                 double cpu_frame = scr.GetLastFrameTimeCPU();
 101                 double gpu_frame = scr.GetLastFrameTimeGPU();
 102                 clock_gettime(CLOCK_MONOTONIC_RAW, &real_clock_now);
 103                 double real_frame = (real_clock_now.tv_sec - real_clock_prev.tv_sec) + 1e-9*(real_clock_now.tv_nsec - real_clock_prev.tv_nsec);
 104
 105
 106                 total_real_time += real_frame; total_cpu_time += cpu_frame; total_gpu_time += gpu_frame;
 107                 if (data_rate > 0 && total_real_time > data_rate*(data_points+1))
 108                 {
 109                         printf("%lu\t%f\t%f\t%f\t%f\t%f\t%f\n", (uint64_t)frames, total_real_time, total_cpu_time, total_gpu_time, real_frame, cpu_frame, gpu_frame);
 110                         data_points++;
 111                 }
 112                 scr.DebugFontPrintF("Rendered frame %lu\n", (uint64_t)frames);
 113                 scr.DebugFontPrintF("[CPU] Render took %lf ms (%lf FPS) (total %lf s, avg FPS %lf)\n", cpu_frame*1e3, 1.0/cpu_frame, total_cpu_time,frames/total_cpu_time);
 114                 scr.DebugFontPrintF("[GPU] Render took %lf ms (%lf FPS) (total %lf s, avg FPS %lf)\n", gpu_frame*1e3, 1.0/gpu_frame, total_gpu_time, frames/total_gpu_time);
 115                 scr.DebugFontPrintF("[REALTIME] Render+Present+Cruft took %lf ms (%lf FPS) (total %lf s, avg FPS %lf)\n", real_frame*1e3, 1.0/real_frame, total_real_time,frames/total_real_time);
 116                 scr.DebugFontPrintF("View bounds: %s\n", view.GetBounds().Str().c_str());
 117
 118                 if (view.UsingGPUTransform())
 119                 {
 120                         scr.DebugFontPrint("Doing coordinate transform on the GPU.\n");
 121                 }
 122                 else
 123                 {
 124                         scr.DebugFontPrint("Doing coordinate transform on the CPU.\n");
 125                 }
 126                 if (view.UsingGPURendering())
 127                 {
 128                         scr.DebugFontPrint("Doing rendering using GPU.\n");
 129                 }
 130                 else
 131                 {
 132                         scr.DebugFontPrint("Doing rendering using CPU.\n");
 133                 }
 134                 scr.Present();
 135         }
 136 }