diff options
Diffstat (limited to 'indra/newview/llappviewer.cpp')
| -rw-r--r-- | indra/newview/llappviewer.cpp | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/indra/newview/llappviewer.cpp b/indra/newview/llappviewer.cpp index efa24796e5..f01f62c798 100644 --- a/indra/newview/llappviewer.cpp +++ b/indra/newview/llappviewer.cpp @@ -632,6 +632,7 @@ LLAppViewer::LLAppViewer() : mQuitRequested(false), mLogoutRequestSent(false), mYieldTime(-1), + mMinFrameTime(-1.0), mMainloopTimeout(NULL), mAgentRegionLastAlive(false), mRandomizeFramerate(LLCachedControl<bool>(gSavedSettings,"Randomize Framerate", FALSE)), @@ -1465,6 +1466,19 @@ bool LLAppViewer::mainLoop() { gFrameStalls++; } + + // Limit FPS + if (mMinFrameTime > F_APPROXIMATELY_ZERO) + { + // Sleep a while to limit frame rate. + S32 milliseconds_to_sleep = llclamp((S32)((mMinFrameTime - frameTimer.getElapsedTimeF64()) * 1000.f), 0, 1000); + if (milliseconds_to_sleep > 0) + { + LLFastTimer t(FTM_YIELD); + ms_sleep(milliseconds_to_sleep); + } + } + frameTimer.reset(); resumeMainloopTimeout(); @@ -2577,6 +2591,12 @@ bool LLAppViewer::initConfiguration() } mYieldTime = gSavedSettings.getS32("YieldTime"); + mMinFrameTime = -1.0f; + F32 max_fps = gSavedSettings.getF32("MaxFPS"); + if (max_fps > F_APPROXIMATELY_ZERO) + { + mMinFrameTime = 1.0f / max_fps; + } // Read skin/branding settings if specified. //if (! gDirUtilp->getSkinDir().empty() ) |