//Main loop
void Main::run()
{
int frames = 0, frameAtBase = 0;
double baseTime = highResTime();
while (true)
{
if(render && glfwWindowShouldClose(window)) //process close only if rendering
break;
if(logging)
profileLog<<"Frame "<<frames<<endl;
double time = highResTime();
if(render)
{
glfwPollEvents();
//Set camera for raycaster
camera.update();
rayCaster.setCamera(camera);
}
//Simulate one step using OpenCL
simulation->step();
if(render)
{
//Get image from raycaster, pass it to OpenGL
rayCaster.shoot();
g.updateTexture(rayCaster.getTexture());
// Render the raycasted texture on a quad
g.renderTexture();
}
double delta;
delta = highResTime() - time; //current time delta
framesLog<<frames<<" "<<delta<<endl; //frame time log
/* Limit framerate to targetFPS (turned off, let autotuner handle)
while(true)
{
delta = highResTime() - time;
double rest = (1.0/targetFPS) - delta;
if(rest <= 0)
break;
usleep(rest / 1000000); //sleep off the rest of the frame
}
*/
//A major change is that of the resolution, in which case
//the raycaster also needs to know.
bool changed = tuner.report(delta);
if(render && changed)
{
rayCaster.setN(simulation->getN());
rayCaster.setVolume(simulation->getOutputVolume());
}
//FPS counter - update once a second
frames++;
if(time - baseTime > 1)
{
cout<<"FPS "<<frames - frameAtBase<<endl;
if(logging)
{
framesLog<<"FPS "<<frames - frameAtBase<<endl;
framesLog.Commit();
profileLog.Commit();
}
frameAtBase = frames;
baseTime = highResTime();
}
}
}
