diff options
Diffstat (limited to 'src/video/win32_v.cpp')
| -rw-r--r-- | src/video/win32_v.cpp | 17 |
1 files changed, 12 insertions, 5 deletions
diff --git a/src/video/win32_v.cpp b/src/video/win32_v.cpp index 2fe5f67f0..42fcf3f4b 100644 --- a/src/video/win32_v.cpp +++ b/src/video/win32_v.cpp @@ -1258,13 +1258,20 @@ void VideoDriver_Win32::MainLoop() CheckPaletteAnim(); } + /* If we are not in fast-forward, create some time between calls to ease up CPU usage. */ if (!_fast_forward || _pause_mode) { - /* Flush GDI buffer to ensure we don't conflict with the drawing thread. */ - GdiFlush(); + /* See how much time there is till we have to process the next event, and try to hit that as close as possible. */ + auto next_tick = std::min(next_draw_tick, next_game_tick); + auto now = std::chrono::steady_clock::now(); - if (_draw_mutex != nullptr) draw_lock.unlock(); - CSleep(1); - if (_draw_mutex != nullptr) draw_lock.lock(); + if (next_tick > now) { + /* Flush GDI buffer to ensure we don't conflict with the drawing thread. */ + GdiFlush(); + + if (_draw_mutex != nullptr) draw_lock.unlock(); + std::this_thread::sleep_for(next_tick - now); + if (_draw_mutex != nullptr) draw_lock.lock(); + } } } |