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Merge pull request #78012 from Calinou/cli-add-max-fps-argument

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Add a `--max-fps` command-line argument to set a FPS limit
This commit is contained in:
Rémi Verschelde
2023-08-17 12:27:27 +02:00
parent e6e79255ed 4cab77094a
commit d603040d4d
6 changed files with 25 additions and 2 deletions
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18
main/main.cpp
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@@ -210,6 +210,7 @@ static bool debug_paths = false;
static bool debug_navigation = false;
static bool debug_avoidance = false;
#endif
static int max_fps = -1;
static int frame_delay = 0;
static bool disable_render_loop = false;
static int fixed_fps = -1;
@@ -468,7 +469,8 @@ void Main::print_help(const char *p_binary) {
OS::get_singleton()->print(" --debug-avoidance Show navigation avoidance debug visuals when running the scene.\n");
OS::get_singleton()->print(" --debug-stringnames Print all StringName allocations to stdout when the engine quits.\n");
#endif
OS::get_singleton()->print(" --frame-delay <ms> Simulate high CPU load (delay each frame by <ms> milliseconds).\n");
OS::get_singleton()->print(" --max-fps <fps> Set a maximum number of frames per second rendered (can be used to limit power usage). A value of 0 results in unlimited framerate.\n");
OS::get_singleton()->print(" --frame-delay <ms> Simulate high CPU load (delay each frame by <ms> milliseconds). Do not use as a FPS limiter; use --max-fps instead.\n");
OS::get_singleton()->print(" --time-scale <scale> Force time scale (higher values are faster, 1.0 is normal speed).\n");
OS::get_singleton()->print(" --disable-vsync Forces disabling of vertical synchronization, even if enabled in the project settings. Does not override driver-level V-Sync enforcement.\n");
OS::get_singleton()->print(" --disable-render-loop Disable render loop so rendering only occurs when called explicitly from script.\n");
@@ -1350,6 +1352,16 @@ Error Main::setup(const char *execpath, int argc, char *argv[], bool p_second_ph
goto error;
}
} else if (I->get() == "--max-fps") { // set maximum rendered FPS
if (I->next()) {
max_fps = I->next()->get().to_int();
N = I->next()->next();
} else {
OS::get_singleton()->print("Missing maximum FPS argument, aborting.\n");
goto error;
}
} else if (I->get() == "--frame-delay") { // force frame delay
if (I->next()) {
@@ -1987,6 +1999,10 @@ Error Main::setup(const char *execpath, int argc, char *argv[], bool p_second_ph
OS::get_singleton()->set_environment("MVK_CONFIG_LOG_LEVEL", OS::get_singleton()->_verbose_stdout ? "3" : "1"); // 1 = Errors only, 3 = Info
#endif
if (max_fps >= 0) {
Engine::get_singleton()->set_max_fps(max_fps);
}
if (frame_delay == 0) {
frame_delay = GLOBAL_DEF(PropertyInfo(Variant::INT, "application/run/frame_delay_msec", PROPERTY_HINT_RANGE, "0,100,1,or_greater"), 0);
}