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stagger mfd device flips to try and prevent studder.

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dicion
2026-07-17 21:43:21 -05:00
parent ef82366132
commit ab24aace11
1 changed files with 7 additions and 3 deletions
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Gameleap/code/CoreTech/Libraries/GameOS/WinMain.cpp
+7 -3
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@@ -1114,9 +1114,12 @@ void gos_UpdateDisplay( bool Everything )
case 3:
break;
case 4:
// Same 7-step cadence as mode 1. Flip all three: radar, left MFD,
// right MFD. mfd_device_right.pDDSFront is NULL if not initialised
// (e.g. g_nMFD2 = -1), so guard the flip.
// 7-step cadence. Radar + left MFD flip on step 0 (same as mode 1).
// Right MFD flip is staggered to step 1 so that three back-to-back
// DGVoodoo2 Present() calls don't all land in the same frame and
// cause rhythmic stutter on the main display.
// Right device finishes rendering at step 6 (channel 4), so
// flipping at step 1 is still correct timing.
sh_step++;
sh_step%=7;
if(sh_step==0) {
@@ -1124,6 +1127,7 @@ void gos_UpdateDisplay( bool Everything )
radar_device.pDDSFront->Flip(0,DDFLIP_DONOTWAIT|DDFLIP_NOVSYNC);
mfd_device.EndScene();
mfd_device.pDDSFront->Flip(0,DDFLIP_DONOTWAIT|DDFLIP_NOVSYNC);
} else if(sh_step==1) {
if (mfd_device_right.pDDSFront)
mfd_device_right.pDDSFront->Flip(0,DDFLIP_DONOTWAIT|DDFLIP_NOVSYNC);
}