*/
// sys_win.c -- Win32 system interface code
-#define WIN32_USETIMEGETTIME 0
-
#include "quakedef.h"
#include "winquake.h"
#include "errno.h"
#include "conproc.h"
#include "direct.h"
+cvar_t sys_usetimegettime = {CVAR_SAVE, "sys_usetimegettime", "1"};
+
// # of seconds to wait on Sys_Error running dedicated before exiting
#define CONSOLE_ERROR_TIMEOUT 60.0
// sleep time on pause or minimization
#define NOT_FOCUS_SLEEP 20
int starttime;
-qboolean ActiveApp, Minimized;
static qboolean sc_return_on_enter = false;
HANDLE hinput, houtput;
static double oldtime = 0.0, curtime = 0.0;
double newtime;
// LordHavoc: note to people modifying this code, DWORD is specifically defined as an unsigned 32bit number, therefore the 65536.0 * 65536.0 is fine.
-#if WIN32_USETIMEGETTIME
- // timeGetTime
- // platform:
- // Windows 95/98/ME/NT/2000
- // features:
- // reasonable accuracy (millisecond)
- // issues:
- // wraps around every 47 days or so (but this is non-fatal to us, odd times are rejected, only causes a one frame stutter)
-
- // make sure the timer is high precision, otherwise different versions of windows have varying accuracy
- if (first)
- timeBeginPeriod (1);
-
- newtime = (double) timeGetTime () / 1000.0;
-#else
- // QueryPerformanceCounter
- // platform:
- // Windows 95/98/ME/NT/2000
- // features:
- // very accurate (CPU cycles)
- // known issues:
- // does not necessarily match realtime too well (tends to get faster and faster in win98)
- // wraps around occasionally on some platforms (depends on CPU speed and probably other unknown factors)
- static double timescale = 0.0;
- LARGE_INTEGER PerformanceFreq;
- LARGE_INTEGER PerformanceCount;
-
- if (!QueryPerformanceFrequency (&PerformanceFreq))
- Sys_Error ("No hardware timer available");
- QueryPerformanceCounter (&PerformanceCount);
-
-#ifdef __BORLANDC__
- timescale = 1.0 / ((double) PerformanceFreq.u.LowPart + (double) PerformanceFreq.u.HighPart * 65536.0 * 65536.0);
- newtime = ((double) PerformanceCount.u.LowPart + (double) PerformanceCount.u.HighPart * 65536.0 * 65536.0) * timescale;
-#else
- timescale = 1.0 / ((double) PerformanceFreq.LowPart + (double) PerformanceFreq.HighPart * 65536.0 * 65536.0);
- newtime = ((double) PerformanceCount.LowPart + (double) PerformanceCount.HighPart * 65536.0 * 65536.0) * timescale;
-#endif
-#endif
+ if (sys_usetimegettime.integer)
+ {
+ static int firsttimegettime = true;
+ // timeGetTime
+ // platform:
+ // Windows 95/98/ME/NT/2000/XP
+ // features:
+ // reasonable accuracy (millisecond)
+ // issues:
+ // wraps around every 47 days or so (but this is non-fatal to us, odd times are rejected, only causes a one frame stutter)
+
+ // make sure the timer is high precision, otherwise different versions of windows have varying accuracy
+ if (firsttimegettime)
+ {
+ timeBeginPeriod (1);
+ firsttimegettime = false;
+ }
+
+ newtime = (double) timeGetTime () / 1000.0;
+ }
+ else
+ {
+ // QueryPerformanceCounter
+ // platform:
+ // Windows 95/98/ME/NT/2000/XP
+ // features:
+ // very accurate (CPU cycles)
+ // known issues:
+ // does not necessarily match realtime too well (tends to get faster and faster in win98)
+ // wraps around occasionally on some platforms (depends on CPU speed and probably other unknown factors)
+ double timescale;
+ LARGE_INTEGER PerformanceFreq;
+ LARGE_INTEGER PerformanceCount;
+
+ if (!QueryPerformanceFrequency (&PerformanceFreq))
+ Sys_Error ("No hardware timer available");
+ QueryPerformanceCounter (&PerformanceCount);
+
+ #ifdef __BORLANDC__
+ timescale = 1.0 / ((double) PerformanceFreq.u.LowPart + (double) PerformanceFreq.u.HighPart * 65536.0 * 65536.0);
+ newtime = ((double) PerformanceCount.u.LowPart + (double) PerformanceCount.u.HighPart * 65536.0 * 65536.0) * timescale;
+ #else
+ timescale = 1.0 / ((double) PerformanceFreq.LowPart + (double) PerformanceFreq.HighPart * 65536.0 * 65536.0);
+ newtime = ((double) PerformanceCount.LowPart + (double) PerformanceCount.HighPart * 65536.0 * 65536.0) * timescale;
+ #endif
+ }
if (first)
{
}
if (newtime < oldtime)
- Con_Printf("Sys_DoubleTime: time running backwards??\n");
- else
{
- curtime += newtime - oldtime;
- oldtime = newtime;
+ // warn if it's significant
+ if (newtime - oldtime < -0.01)
+ Con_Printf("Sys_DoubleTime: time stepped backwards (went from %f to %f, difference %f)\n", oldtime, newtime, newtime - oldtime);
}
+ else
+ curtime += newtime - oldtime;
+ oldtime = newtime;
return curtime;
}
int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow)
{
- double oldtime, newtime;
+ double frameoldtime, framenewtime;
MEMORYSTATUS lpBuffer;
static char cwd[1024];
int t;
Sys_Shared_EarlyInit();
+ Cvar_RegisterVariable(&sys_usetimegettime);
+
tevent = CreateEvent(NULL, false, false, NULL);
if (!tevent)
Sys_Shared_LateInit();
- oldtime = Sys_DoubleTime ();
+ frameoldtime = Sys_DoubleTime ();
/* main window message loop */
while (1)
if (cls.state != ca_dedicated)
{
// yield the CPU for a little while when paused, minimized, or not the focus
- if ((cl.paused && !ActiveApp) || Minimized)
+ if ((cl.paused && !vid_activewindow) || vid_hidden)
{
SleepUntilInput (PAUSE_SLEEP);
scr_skipupdate = 1; // no point in bothering to draw
}
- else if (!ActiveApp)
+ else if (!vid_activewindow)
SleepUntilInput (NOT_FOCUS_SLEEP);
}
- newtime = Sys_DoubleTime ();
- Host_Frame (newtime - oldtime);
- oldtime = newtime;
+ framenewtime = Sys_DoubleTime ();
+ Host_Frame (framenewtime - frameoldtime);
+ frameoldtime = framenewtime;
}
/* return success of application */
projects / xonotic / darkplaces.git / blobdiff