gfxcore.d

   1 // main driver
   2 module gfxcore;
   3
   4 private:
   5 import mtrender;
   6
   7 //version = show_frame_time;
   8
   9
  10 // ////////////////////////////////////////////////////////////////////////// //
  11 static if (__traits(compiles, () { import arsd.simpledisplay; })) {
  12   import arsd.simpledisplay;
  13 } else {
  14   import simpledisplay;
  15 }
  16 import arsd.color;
  17
  18 __gshared SimpleWindow sdwindow;
  19 public __gshared Image texImage;
  20
  21 shared static ~this () {
  22   destroy(texImage);
  23 }
  24
  25 public enum vlWidth = 160;
  26 public enum vlHeight = 120;
  27 public enum scale = 3;
  28 public enum scanlines = false;
  29
  30 public enum vlEffectiveWidth = vlWidth*scale;
  31 public enum vlEffectiveHeight = vlHeight*scale;
  32
  33
  34 // ////////////////////////////////////////////////////////////////////////// //
  35 __gshared string aftstr; // average frame time
  36
  37 void blitScene () {
  38   if (sdwindow.closed) return;
  39   auto painter = sdwindow.draw();
  40   painter.drawImage(Point(0, 0), texImage);
  41
  42   //painter.outlineColor = Color.white;
  43   painter.outlineColor = Color.black;
  44   painter.drawText(Point(10, 10), aftstr);
  45 }
  46
  47
  48 public void mainLoop () {
  49   texImage = new Image(vlEffectiveWidth, vlEffectiveHeight);
  50   mtrenderInit();
  51
  52   sdwindow = new SimpleWindow(vlEffectiveWidth, vlEffectiveHeight, "RayMarching demo", OpenGlOptions.no, Resizablity.fixedSize);
  53   blitScene();
  54
  55   enum MSecsPerFrame = 1000/60; /* 60 is FPS */
  56
  57   uint[8] frameTimes = 1000;
  58
  59   sdwindow.eventLoop(MSecsPerFrame,
  60     delegate () {
  61       if (sdwindow.closed) return;
  62       if (mtrenderComplete) {
  63         // do average frame time
  64         uint aft = 0;
  65         foreach (immutable idx; 1..frameTimes.length) {
  66           aft += frameTimes.ptr[idx];
  67           frameTimes.ptr[idx-1] = frameTimes.ptr[idx];
  68         }
  69         frameTimes[$-1] = mtrenderFrameTime;
  70         aft += frameTimes[$-1];
  71         aft /= cast(uint)frameTimes.length;
  72         if (aft == 0) aft = 1000;
  73         {
  74           import std.string;
  75           aftstr = "%s FPS".format(1000/aft);
  76         }
  77         //version(show_frame_time) { import core.stdc.stdio; printf("%u msecs per frame\n", frameDur); }
  78         blitScene();
  79         mtrenderStartSignal();
  80       }
  81     },
  82     delegate (KeyEvent event) {
  83       if (sdwindow.closed) return;
  84       if (event.pressed && event.key == Key.Escape) {
  85         flushGui();
  86         sdwindow.close();
  87       }
  88     },
  89     delegate (MouseEvent event) {
  90     },
  91     delegate (dchar ch) {
  92       if (ch == ' ') mtrenderTogglePause();
  93     },
  94   );
  95   mtrenderShutdown();
  96   if (!sdwindow.closed) {
  97     flushGui();
  98     sdwindow.close();
  99   }
 100   flushGui();
 101 }