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Merge pull request #212 from marynate/PR-framelimit

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Add ability to apply frame rate limit (application/target_fps)
This commit is contained in:
reduz
2014-04-05 09:41:10 -03:00
parent ee76837826 c0547f5691
commit f9820d4c40
6 changed files with 41 additions and 4 deletions
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15
main/main.cpp
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@ -651,7 +651,8 @@ Error Main::setup(const char *execpath,int argc, char *argv[],bool p_second_phas
OS::get_singleton()->set_screen_orientation(OS::SCREEN_LANDSCAPE);
}
OS::get_singleton()->set_iterations_per_second(GLOBAL_DEF("display/target_fps",60));
OS::get_singleton()->set_iterations_per_second(GLOBAL_DEF("physics/fixed_fps",60));
OS::get_singleton()->set_target_fps(GLOBAL_DEF("application/target_fps",0));
if (!OS::get_singleton()->_verbose_stdout) //overrided
OS::get_singleton()->_verbose_stdout=GLOBAL_DEF("debug/verbose_stdout",false);
@ -1213,6 +1214,7 @@ bool Main::start() {
}
uint64_t Main::last_ticks=0;
uint64_t Main::target_ticks=0;
float Main::time_accum=0;
uint32_t Main::frames=0;
uint32_t Main::frame=0;
@ -1298,7 +1300,6 @@ bool Main::iteration() {
}
} else {
VisualServer::get_singleton()->flush(); // flush visual commands
}
if (AudioServer::get_singleton())
@ -1346,6 +1347,16 @@ bool Main::iteration() {
OS::get_singleton()->delay_usec( OS::get_singleton()->get_frame_delay()*1000 );
}
int taret_fps = OS::get_singleton()->get_target_fps();
if (taret_fps>0) {
uint64_t time_step = 1000000L/taret_fps;
target_ticks += time_step;
uint64_t current_ticks = OS::get_singleton()->get_ticks_usec();
if (current_ticks<target_ticks) OS::get_singleton()->delay_usec(target_ticks-current_ticks);
current_ticks = OS::get_singleton()->get_ticks_usec();
target_ticks = MIN(MAX(target_ticks,current_ticks-time_step),current_ticks+time_step);
}
return exit;
}

3
main/main.h
View File

@ -40,13 +40,12 @@
class Main {
static void print_help(const char* p_binary);
static uint64_t last_ticks;
static uint64_t target_ticks;
static float time_accum;
static uint32_t frames;
static uint32_t frame;
static bool force_redraw_requested;
public:
static Error setup(const char *execpath,int argc, char *argv[],bool p_second_phase=true);