OrdinaryMagician/vkdoom_m
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- Ported frame rate limiting code to SDL.

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SVN r3891 (trunk)
This commit is contained in:
Braden Obrzut 2012-10-17 19:45:04 +00:00
commit 1907983ab7
4 changed files with 116 additions and 30 deletions
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33
src/sdl/i_system.cpp
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@ -38,14 +38,6 @@
#include <gdk/gdkkeysyms.h>
#endif
#ifdef __APPLE__
#include <mach/mach_init.h>
#include <mach/semaphore.h>
#include <mach/task.h>
#else
#include <semaphore.h>
#endif
#include "doomerrors.h"
#include <math.h>
@ -144,11 +136,7 @@ static DWORD BaseTime;
static int TicFrozen;
// Signal based timer.
#ifdef __APPLE__
static semaphore_t timerWait;
#else
static sem_t timerWait;
#endif
static Semaphore timerWait;
static int tics;
static DWORD sig_start, sig_next;
@ -221,12 +209,7 @@ int I_WaitForTicSignaled (int prevtic)
while(tics <= prevtic)
{
#ifdef __APPLE__
while(semaphore_wait(timerWait) != KERN_SUCCESS)
;
#else
while(sem_wait(&timerWait) != 0);
#endif
SEMAPHORE_WAIT(timerWait)
}
return tics;
@ -276,11 +259,7 @@ void I_HandleAlarm (int sig)
tics++;
sig_start = SDL_GetTicks();
sig_next = Scale((Scale (sig_start, TICRATE, 1000) + 1), 1000, TICRATE);
#ifdef __APPLE__
semaphore_signal(timerWait);
#else
sem_post(&timerWait);
#endif
SEMAPHORE_SIGNAL(timerWait)
}
//
@ -290,11 +269,7 @@ void I_HandleAlarm (int sig)
//
void I_SelectTimer()
{
#ifdef __APPLE__
semaphore_create(mach_task_self(), &timerWait, 0, 0);
#else
sem_init(&timerWait, 0, 0);
#endif
SEMAPHORE_INIT(timerWait, 0, 0)
signal(SIGALRM, I_HandleAlarm);
struct itimerval itv;