void FxPlayerTiny::DisplayGameScreen()
{
if(NULL == pDevice) return;
Render();
DisplayHUD();
pDevice->Present(NULL, NULL, NULL, NULL);
}
static void DisplayCallback(void)
{
unsigned int MAXLATENCY=2000*1000; //2seconds rendering time is terrible
//If we were Paused ( a.k.a. economy mode )
//All the time passed since the last draw operation could lead to jerky movement
//So we won't track time as we do regularly but "pretend" the last frame was 1ms ago
//This will ensure smoothness and eye-candy for the user :)
if (frame.onNextDrawAssumeWeWerePaused)
{
gettimeofday(&last_frame,0x0);
time_passed_microseconds = 1000;
frame.onNextDrawAssumeWeWerePaused = 0;
} else
{
// Regular per frame time keeping
/*KEEP TRACK OF TIME -----------------*/
gettimeofday(&this_frame,0x0);
time_passed_microseconds = timeval_diff(&difference,&this_frame,&last_frame);
if (time_passed_microseconds>MAXLATENCY)
{
fprintf(stderr,"FRAME DELAYED %u msecs\n",time_passed_microseconds/1000);
fprintf(stderr,"to keep things from freaking out we will pretend We were paused and only 1 ms passed\n");
time_passed_microseconds=1000;
}
last_frame = this_frame;
/*---------------------------------------*/
}
/* FRAME RATE COUNTING
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>*/
framecount+=1;
timenow=glutGet(GLUT_ELAPSED_TIME);
frame.tick_count=timenow; // <- Slideshow triggering
if (timenow - timebase>1000)
{
float real_fps = (framecount * 1000.0) / (timenow-timebase);
fps = (unsigned int) real_fps ;
frame.fps=fps; // <- Store in slideshow
timebase = timenow;
framecount = 0;
}
/* >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>*/
/* >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>*/
/* Texture binding via OpenGL , it can only be done in this thread , before actually rendering >>>>>>>>>>>>>>>>>>>>>>*/
/* This code only counts textures to be created , they are actually loaded on the end of this function >>>>>>>>>>>>>>>*/
/* >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> */
/* OPEN GL DRAWING >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> */
// glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT ); // <- This causes screen tearing..! | GL_DEPTH_BUFFER_BIT
glPushMatrix();
//glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
glRotatef(frame.angle_x,-1.0,0,0); // Peristrofi gyrw apo ton x
glRotatef(frame.angle_y,0,-1.0,0); // Peristrofi gyrw apo ton y
glRotatef(frame.angle_z,0,0,-1.0);
glTranslatef(-frame.vx, -frame.vy, -frame.vz);
MainDisplayFunction();
Render_3DObjects();
DrawEffects();
glTranslatef(frame.vx,frame.vy,frame.vz);
glPopMatrix();
/* >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> */
/* DRAW APPLICATION HUD */
if (frame.show_time>0)
{
unsigned int diff_ms=time_passed_microseconds/1000;
if (frame.show_time>diff_ms) { frame.show_time-=diff_ms; } else
{ frame.show_time=0; }
DisplayHUD(2);
}else
if (frame.show_information>0)
{
unsigned int diff_ms=time_passed_microseconds/1000;
if (frame.show_information>diff_ms) { frame.show_information-=diff_ms; } else
{ frame.show_information=0; }
DisplayHUD(1);
}else
if ( frame.distance_barrier_after_considered_close<frame.desired_z )
{
/* Display HUD only if not zoomed */
DisplayHUD(0);
}
/* - - - - - - - */
glFinish(); // Thats all the drawing
glutSwapBuffers();
/*STATE MANAGMENT ----------------------------------------------------*/
AutomaticSlideShowControl_if_needed(); /* if automatic slide show is enabled it will relay commands */
/* THIS COMMAND MOVES THE CAMERA ACCORDING TO THE USER/COMPUTER INPUT*/
PerformCameraMovement(time_passed_microseconds);
PerformPicturesMovement(time_passed_microseconds);
Run3DObjects(time_passed_microseconds);
/* Texture binding via OpenGL , it can only be done in this thread , while not rendering
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> */
ManageCreatingTexturesMemory_OpenGLThread(0);
/* >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> */
/* Changes on display behaviour >>>>>>>>>>>>>>>>>>>>>>*/
if ( !framerate_limiter() ) /* helps smoothing out framerate */
{
usleep(10); /*Some dead time */
}
glFlush(); //This is needed for Discrete GPU / ( Optimus ) to be working (!)
}
