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Forcefully disable VSync if game FPS >> monitor FPS.

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This commit is contained in:
Themaister 2012-08-12 00:40:21 +02:00
parent 9f452def9c
commit e14a679f83
1 changed files with 29 additions and 22 deletions
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51
driver.c
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@ -192,8 +192,37 @@ void init_drivers_pre(void)
find_input_driver();
}
static void adjust_system_rates(void)
{
const struct retro_system_timing *info = &g_extern.system.av_info.timing;
float timing_skew = fabs(1.0f - info->fps / g_settings.video.refresh_rate);
if (timing_skew > 0.05f) // We don't want to adjust pitch too much. If we have extreme cases, just don't readjust at all.
{
RARCH_LOG("Timings deviate too much. Will not adjust. (Display = %.2f Hz, Game = %.2f Hz)\n",
g_settings.video.refresh_rate,
(float)info->fps);
// We won't be able to do VSync reliably as game FPS > monitor FPS.
if (info->fps > g_settings.video.refresh_rate)
{
g_settings.video.vsync = false;
RARCH_LOG("Game FPS > Monitor FPS. Cannot rely on VSync.\n");
}
g_settings.video.refresh_rate = info->fps;
}
g_settings.audio.in_rate = info->sample_rate *
(g_settings.video.refresh_rate / info->fps);
RARCH_LOG("Set audio input rate to: %.2f Hz.\n", g_settings.audio.in_rate);
}
void init_drivers(void)
{
adjust_system_rates();
init_video_input();
init_audio();
}
@ -278,26 +307,6 @@ static void deinit_dsp_plugin(void)
}
#endif
static void adjust_audio_input_rate(void)
{
const struct retro_system_timing *info = &g_extern.system.av_info.timing;
float timing_skew = fabs(1.0f - info->fps / g_settings.video.refresh_rate);
if (timing_skew > 0.05f) // We don't want to adjust pitch too much. If we have extreme cases, just don't readjust at all.
{
RARCH_LOG("Timings deviate too much. Will not adjust. (Display = %.2f Hz, Game = %.2f Hz)\n",
g_settings.video.refresh_rate,
(float)info->fps);
g_settings.video.refresh_rate = info->fps;
}
g_settings.audio.in_rate = info->sample_rate *
(g_settings.video.refresh_rate / info->fps);
RARCH_LOG("Set audio input rate to: %.2f Hz.\n", g_settings.audio.in_rate);
}
void init_audio(void)
{
// Accomodate rewind since at some point we might have two full buffers.
@ -321,8 +330,6 @@ void init_audio(void)
return;
}
adjust_audio_input_rate();
driver.audio_data = audio_init_func(*g_settings.audio.device ? g_settings.audio.device : NULL,
g_settings.audio.out_rate, g_settings.audio.latency);