void update_autoframeskip(void)
{
// don't adjust frameskip if we're paused or if the debugger was
// visible this cycle or if we haven't run yet
if (!game_was_paused && !debugger_was_visible && cpu_getcurrentframe() > 2 * FRAMESKIP_LEVELS)
{
const struct performance_info *performance = mame_get_performance_info();
// if we're too fast, attempt to increase the frameskip
if (performance->game_speed_percent >= 99.5)
{
frameskipadjust++;
// but only after 3 consecutive frames where we are too fast
if (frameskipadjust >= 3)
{
frameskipadjust = 0;
if (frameskip > 0) frameskip--;
}
}
// if we're too slow, attempt to increase the frameskip
else
{
// if below 80% speed, be more aggressive
if (performance->game_speed_percent < 80)
frameskipadjust -= (int)((90. - performance->game_speed_percent) / 5.);
// if we're close, only force it up to frameskip 8
else if (frameskip < 8)
frameskipadjust--;
// perform the adjustment
while (frameskipadjust <= -2)
{
frameskipadjust += 2;
if (frameskip < FRAMESKIP_LEVELS - 1)
frameskip++;
}
}
}
// clear the other states
game_was_paused = game_is_paused;
debugger_was_visible = 0;
}
static void update_autoframeskip(void)
{
// skip if paused
if (mame_is_paused(Machine))
return;
// don't adjust frameskip if we're paused or if the debugger was
// visible this cycle or if we haven't run yet
if (cpu_getcurrentframe() > 2 * FRAMESKIP_LEVELS)
{
const performance_info *performance = mame_get_performance_info();
// if we're too fast, attempt to increase the frameskip
if (performance->game_speed_percent >= 99.5)
{
frameskipadjust++;
// but only after 3 consecutive frames where we are too fast
if (frameskipadjust >= 3)
{
frameskipadjust = 0;
if (video_config.frameskip > 0) video_config.frameskip--;
}
}
// if we're too slow, attempt to increase the frameskip
else
{
// if below 80% speed, be more aggressive
if (performance->game_speed_percent < 80)
frameskipadjust -= (90 - performance->game_speed_percent) / 5;
// if we're close, only force it up to frameskip 8
else if (video_config.frameskip < 8)
frameskipadjust--;
// perform the adjustment
while (frameskipadjust <= -2)
{
frameskipadjust += 2;
if (video_config.frameskip < FRAMESKIP_LEVELS - 1)
video_config.frameskip++;
}
}
}
}