diff options
| author | Yuri Kunde Schlesner <yuriks@yuriks.net> | 2017-02-20 16:31:59 -0800 |
|---|---|---|
| committer | Yuri Kunde Schlesner <yuriks@yuriks.net> | 2017-02-26 17:22:04 -0800 |
| commit | fb1979d7e26c20fe2b8d2c3d3dc998e5e00f2f61 (patch) | |
| tree | 690461954bff040727fa2cb3b34c9d71c003ea9c /src/core/perf_stats.h | |
| parent | b285c2a4ed29a126b5bcfe46e2784bd1870bdf82 (diff) | |
Core: Re-write frame limiter
Now based on std::chrono, and also works in terms of emulated time
instead of frames, so we can in the future frame-limit even when the
display is disabled, etc.
The frame limiter can also be enabled along with v-sync now, which
should be useful for those with displays running at more than 60 Hz.
Diffstat (limited to 'src/core/perf_stats.h')
| -rw-r--r-- | src/core/perf_stats.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/src/core/perf_stats.h b/src/core/perf_stats.h index 4098fc1f26..b03adab68a 100644 --- a/src/core/perf_stats.h +++ b/src/core/perf_stats.h @@ -55,4 +55,20 @@ private: u32 game_frames = 0; }; +class FrameLimiter { +public: + using Clock = std::chrono::high_resolution_clock; + + void DoFrameLimiting(u64 current_system_time_us); + +private: + /// Emulated system time (in microseconds) at the last limiter invocation + u64 previous_system_time_us = 0; + /// Walltime at the last limiter invocation + Clock::time_point previous_walltime = Clock::now(); + + /// Accumulated difference between walltime and emulated time + std::chrono::microseconds frame_limiting_delta_err{0}; +}; + } // namespace Core |