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Actually fixed -refreshspeed.

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This commit is contained in:
Aaron Giles 2008-04-04 13:31:25 +00:00
parent ceab42a52b
commit 2c63abdad0
1 changed files with 45 additions and 17 deletions
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62
src/emu/video.c
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@ -181,6 +181,7 @@ static void update_throttle(running_machine *machine, attotime emutime);
static osd_ticks_t throttle_until_ticks(running_machine *machine, osd_ticks_t target_ticks);
static void update_frameskip(running_machine *machine);
static void recompute_speed(running_machine *machine, attotime emutime);
static void update_refresh_speed(running_machine *machine);
/* screen snapshots */
static void create_snapshot_bitmap(const device_config *screen);
@ -305,6 +306,7 @@ void video_init(running_machine *machine)
/* extract initial execution state from global configuration settings */
global.speed = original_speed_setting();
update_refresh_speed(machine);
global.throttle = options_get_bool(mame_options(), OPTION_THROTTLE);
global.auto_frameskip = options_get_bool(mame_options(), OPTION_AUTOFRAMESKIP);
global.frameskip_level = options_get_int(mame_options(), OPTION_FRAMESKIP);
@ -699,23 +701,6 @@ void video_screen_configure(const device_config *screen, int width, int height,
else
state->vblank_period = config->vblank;
/* adjust speed if necessary */
if (options_get_bool(mame_options(), OPTION_REFRESHSPEED))
{
float minrefresh = render_get_max_update_rate();
if (minrefresh != 0)
{
UINT32 target_speed = floor(minrefresh * 100.0 / ATTOSECONDS_TO_HZ(frame_period));
UINT32 original_speed = original_speed_setting();
target_speed = MIN(target_speed, original_speed);
if (target_speed != global.speed)
{
mame_printf_verbose("Adjusting target speed to %d%%\n", target_speed);
global.speed = target_speed;
}
}
}
/* if we are on scanline 0 already, reset the update timer immediately */
/* otherwise, defer until the next scanline 0 */
if (video_screen_get_vpos(screen) == 0)
@ -725,6 +710,9 @@ void video_screen_configure(const device_config *screen, int width, int height,
/* start the VBLANK timer */
timer_adjust_oneshot(state->vblank_begin_timer, video_screen_get_time_until_vblank_start(screen), 0);
/* adjust speed if necessary */
update_refresh_speed(screen->machine);
}
@ -1972,6 +1960,46 @@ static void update_frameskip(running_machine *machine)
}
/*-------------------------------------------------
update_refresh_speed - update the global.speed
based on the maximum refresh rate supported
-------------------------------------------------*/
static void update_refresh_speed(running_machine *machine)
{
/* only do this if the refreshspeed option is used */
if (options_get_bool(mame_options(), OPTION_REFRESHSPEED))
{
float minrefresh = render_get_max_update_rate();
if (minrefresh != 0)
{
attoseconds_t min_frame_period = ATTOSECONDS_PER_SECOND;
UINT32 original_speed = original_speed_setting();
const device_config *screen;
UINT32 target_speed;
/* find the screen with the shortest frame period (max refresh rate) */
for (screen = video_screen_first(machine->config); screen != NULL; screen = video_screen_next(screen))
{
screen_state *state = get_safe_token(screen);
min_frame_period = MIN(min_frame_period, state->frame_period);
}
/* compute a target speed as an integral percentage */
target_speed = floor(minrefresh * 100.0 / ATTOSECONDS_TO_HZ(min_frame_period));
target_speed = MIN(target_speed, original_speed);
/* if we changed, log that verbosely */
if (target_speed != global.speed)
{
mame_printf_verbose("Adjusting target speed to %d%%\n", target_speed);
global.speed = target_speed;
}
}
}
}
/*-------------------------------------------------
recompute_speed - recompute the current
overall speed; we assume this is called only