Exemple #1
0
void Tracer::trace()
{
	if( !scene_ || is_tracing_ )
	{
		return;
	}

	startTracing();

	const int width		= film_->getWidth();
	const int height	= film_->getHeight();
	const double aspect = static_cast< double >( width ) /
						  static_cast< double >( height );

	Logging::log( LogLevel::Info,
				"[Tracer] Tracing image with " + std::to_string( width ) + 
				" x " + std::to_string( height ) + " pixels (w x h) and " +
				std::to_string( rays_per_pixel_ ) + " samples per pixel." );

	std::thread t( [=]{
#pragma omp parallel for schedule( dynamic, 1 )	
	for( int samp = 0; samp < rays_per_pixel_; ++samp )
	{
		for( int y = 0; y < height && is_tracing_; ++y )
		{
			for( int x = 0; x < width && is_tracing_; ++x )
			{
				const double x_d = static_cast< double >( x );
				const double y_d = static_cast< double >( y );
				const double width_d = static_cast< double >( width );
				const double height_d = static_cast< double >( height );

				const double dx = aspect * ( x_d / width_d - .5 );
				const double dy = ( y_d / height_d - .5 );

				Color sample = traceLocation( dx, dy );
				film_->addSample( x, y, sample );
				curr_num_samples_.fetch_add( 1 );
			}			
		}
	}

	stopTracing();
	
	auto perf_string = std::to_string( getSpeedAsMsamplesPerSec() );
	// @TODO cutting away unwanted digits entails wrong rounding
	perf_string = perf_string.substr( 0, perf_string.length() - 4 );

	Logging::log( LogLevel::Info,
				  "[Tracer] Generated samples at a rate of " + perf_string +
					  " Msamples/sec." );
	} );
	t.detach();
}
Exemple #2
0
//////////////////////////////////////////////////////////////////////////////
//WINMAIN
//////////////////////////////////////////////////////////////////////////////
int WINAPI WinMain(HINSTANCE hInstance,HINSTANCE hPrevInstance,LPSTR lpCmdLine,int nShowCmd)
{
#ifdef DEBUGGING
   startTracing(TRACEFILENAME);
#endif

   TRACE ("Start of Session___");
   
   //assign instance to global variable
   hInstMain=hInstance;

   //create window class
   WNDCLASSEX wcx;

   //set the size of the structure
   wcx.cbSize=sizeof(WNDCLASSEX);

   //class style
   wcx.style=CS_OWNDC | CS_HREDRAW | CS_VREDRAW | CS_DBLCLKS;

   //window procedure
   wcx.lpfnWndProc=TheWindowProc;

   //class extra
   wcx.cbClsExtra=0;

   //window extra
   wcx.cbWndExtra=0;

   //application handle
   wcx.hInstance=hInstMain;

   //icon
   wcx.hIcon=LoadIcon(NULL,IDI_APPLICATION);

   //cursor
   wcx.hCursor=LoadCursor(NULL,IDC_ARROW);

   //background color
   wcx.hbrBackground=(HBRUSH)GetStockObject(BLACK_BRUSH);

   //menu
   wcx.lpszMenuName=NULL;

   //class name
   wcx.lpszClassName=WINDOWCLASS;

   //small icon
   wcx.hIconSm=NULL;

   //register the window class, return 0 if not successful
   if(!RegisterClassEx(&wcx)) return(0);

   //create main window
   hWndMain=CreateWindowEx(0,
                           WINDOWCLASS,
                           WINDOWTITLE, 
                           WS_BORDER | WS_SYSMENU | WS_VISIBLE,
                           0,
                           0,
                           windowHorizontalSize,
                           windowVerticalSize,
                           NULL,
                           NULL,
                           hInstMain,
                           NULL);

   //error check
   if(!hWndMain)
   {
      return(0);
   }

   //if program initialization failed, then return with 0
   if(!Prog_Init()) 
   {
      return(0);
   }

   //message structure
   MSG msg;
   TRACE("start message pump..");

   //message pump
   for(;;)   
   {
      //look for a message
      if(PeekMessage(&msg,NULL,0,0,PM_REMOVE))
      {
         //there is a message

         //check that we arent quitting
         if(msg.message==WM_QUIT) 
         {
            break;
         }
         
         //translate message
         TranslateMessage(&msg);

         //dispatch message
         DispatchMessage(&msg);
      }

      //run main game loop
      Prog_Loop();
   }
   
   //clean up program data
   Prog_Done();

#ifdef DEBUGGING
   stopTracing();
#endif

   //return the wparam from the WM_QUIT message
   return(msg.wParam);
}