- OK, so we can't have vid_maxfps on OS X since there does not appear to be an equivalent to POSIX timers. The only thing I could find would require Objective-C and an event loop.

SVN r3892 (trunk)

src/sdl/hardware.cpp

@@ -194,6 +194,7 @@ void I_ClosestResolution (int *width, int *height, int bits)
 EXTERN_CVAR(Int, vid_maxfps);
 EXTERN_CVAR(Bool, cl_capfps);
 
+#ifndef __APPLE__
 Semaphore FPSLimitSemaphore;
 
 static void FPSLimitNotify(sigval val)
@@ -245,6 +246,13 @@ void I_SetFPSLimit(int limit)
 		DPrintf("FPS timer set to %u ms\n", (unsigned int) period.it_interval.tv_nsec / 1000000);
 	}
 }
+#else
+// So Apple doesn't support POSIX timers and I can't find a good substitute short of
+// having Objective-C Cocoa events or something like that.
+void I_SetFPSLimit(int limit)
+{
+}
+#endif
 
 CUSTOM_CVAR (Int, vid_maxfps, 200, CVAR_ARCHIVE | CVAR_GLOBALCONFIG)
 {

src/sdl/hardware.h

@@ -46,7 +46,7 @@ typedef semaphore_t Semaphore;
 #define SEMAPHORE_WAIT(sem) \
 	while(semaphore_wait(sem) != KERN_SUCCESS){}
 #define SEMAPHORE_SIGNAL(sem) \
-	semaphore_signal(sem)
+	semaphore_signal(sem);
 #define SEMAPHORE_INIT(sem, shared, value) \
 	semaphore_create(mach_task_self(), &sem, shared, value);
 #else

src/sdl/sdlvideo.cpp

@@ -375,10 +375,12 @@ void SDLFB::Update ()
 
 	DrawRateStuff ();
 
+#ifndef __APPLE__
 	if(vid_maxfps)
 	{
 		SEMAPHORE_WAIT(FPSLimitSemaphore)
 	}
+#endif
 
 	Buffer = NULL;
 	LockCount = 0;