From 3e36f3b9b96374856caf77440b3967de1b3aac72 Mon Sep 17 00:00:00 2001
From: Roman Fomin <rfomin@gmail.com>
Date: Sat, 30 Dec 2023 16:47:05 +0700
Subject: [PATCH] reset target refresh after wipe (wipe is always at 35 FPS)

---
 src/d_main.c  | 2 ++
 src/i_video.c | 6 ++++--
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/src/d_main.c b/src/d_main.c
index 7a94c2e5..6bc25399 100644
--- a/src/d_main.c
+++ b/src/d_main.c
@@ -385,6 +385,8 @@ void D_Display (void)
       I_FinishUpdate();             // page flip or blit buffer
     }
   while (!done);
+
+  I_ResetTargetRefresh(); // reset after wipe
 }
 
 //
diff --git a/src/i_video.c b/src/i_video.c
index 20f3f8e9..a1bf31d8 100644
--- a/src/i_video.c
+++ b/src/i_video.c
@@ -1030,10 +1030,10 @@ static void ResetResolution(int height)
 
     video.unscaledw = (video.unscaledw + 1) & ~1;
 
-    // Unscaled widescreen 16:9 resolution truncates to 428x240, which is not
+    // Unscaled widescreen 16:9 resolution truncates to 426x240, which is not
     // quite 16:9. To avoid visual instability, we calculate the scaled width
     // without the actual aspect ratio. For example, at 1280x720 we get
-    // 1284x720.
+    // 1278x720.
 
     double vertscale = (double)actualheight / (double)unscaled_actualheight;
     video.width = (int)(video.unscaledw * vertscale);
@@ -1172,6 +1172,8 @@ static void ResetLogicalSize(void)
 
 void I_ResetTargetRefresh(void)
 {
+    frametime_withoutpresent = 0; // skip DRS one frame
+
     if (uncapped)
     {
         targetrefresh = (fpslimit >= TICRATE) ? fpslimit : native_refresh_rate;