qcsrc/client/hud/panel/engineinfo.qc

   1 #include "engineinfo.qh"
   2
   3 // Engine info (#13)
   4
   5 float prevfps;
   6 float prevfps_time;
   7 int framecounter;
   8
   9 float frametimeavg;
  10 float frametimeavg1; // 1 frame ago
  11 float frametimeavg2; // 2 frames ago
  12 float autocvar_hud_panel_engineinfo_framecounter_exponentialmovingaverage;
  13 float autocvar_hud_panel_engineinfo_framecounter_exponentialmovingaverage_new_weight;
  14 float autocvar_hud_panel_engineinfo_framecounter_exponentialmovingaverage_instantupdate_change_threshold;
  15 void HUD_EngineInfo()
  16 {
  17         if(!autocvar__hud_configure)
  18         {
  19                 if(!autocvar_hud_panel_engineinfo) return;
  20         }
  21
  22         HUD_Panel_LoadCvars();
  23         vector pos, mySize;
  24         pos = panel_pos;
  25         mySize = panel_size;
  26
  27         if (autocvar_hud_panel_engineinfo_dynamichud)
  28                 HUD_Scale_Enable();
  29         else
  30                 HUD_Scale_Disable();
  31         HUD_Panel_DrawBg();
  32         if(panel_bg_padding)
  33         {
  34                 pos += '1 1 0' * panel_bg_padding;
  35                 mySize -= '2 2 0' * panel_bg_padding;
  36         }
  37
  38         float currentTime = gettime(GETTIME_REALTIME);
  39         if(autocvar_hud_panel_engineinfo_framecounter_exponentialmovingaverage)
  40         {
  41                 float currentframetime = currentTime - prevfps_time;
  42                 frametimeavg = (frametimeavg + frametimeavg1 + frametimeavg2 + currentframetime)/4; // average three frametimes into framecounter for slightly more stable fps readings :P
  43                 frametimeavg2 = frametimeavg1;
  44                 frametimeavg1 = frametimeavg;
  45
  46                 float weight;
  47                 weight = autocvar_hud_panel_engineinfo_framecounter_exponentialmovingaverage_new_weight;
  48                 if(currentframetime > 0.0001) // filter out insane values which sometimes seem to occur and throw off the average? If you are getting 10,000 fps or more, then you don't need a framerate counter.
  49                 {
  50                         if(fabs(prevfps - (1/frametimeavg)) > prevfps * autocvar_hud_panel_engineinfo_framecounter_exponentialmovingaverage_instantupdate_change_threshold) // if there was a big jump in fps, just force prevfps at current (1/currentframetime) to make big updates instant
  51                                 prevfps = (1/currentframetime);
  52                         prevfps = (1 - weight) * prevfps + weight * (1/frametimeavg); // framecounter just used so there's no need for a new variable, think of it as "frametime average"
  53                 }
  54                 prevfps_time = currentTime;
  55         }
  56         else
  57         {
  58                 framecounter += 1;
  59                 if(currentTime - prevfps_time > autocvar_hud_panel_engineinfo_framecounter_time)
  60                 {
  61                         prevfps = framecounter/(currentTime - prevfps_time);
  62                         framecounter = 0;
  63                         prevfps_time = currentTime;
  64                 }
  65         }
  66
  67         vector color;
  68         color = HUD_Get_Num_Color (prevfps, 100);
  69         drawstring_aspect(pos, sprintf(_("FPS: %.*f"), autocvar_hud_panel_engineinfo_framecounter_decimals, prevfps), mySize, color, panel_fg_alpha, DRAWFLAG_NORMAL);
  70 }