From 28c30a9294e8aeadf0ecc685991ced1513ac7227 Mon Sep 17 00:00:00 2001
From: Lactozilla <jp6781615@gmail.com>
Date: Mon, 8 Jan 2024 22:08:50 -0300
Subject: [PATCH] Optimize for when wall_scalex == 1.0

---
 src/r_segs.c | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/src/r_segs.c b/src/r_segs.c
index 16d6a1856..6ca7bce28 100644
--- a/src/r_segs.c
+++ b/src/r_segs.c
@@ -737,8 +737,16 @@ void R_RenderThickSideRange(drawseg_t *ds, INT32 x1, INT32 x2, ffloor_t *pfloor)
 
 	thicksidecol = ffloortexturecolumn;
 
-	for (INT32 x = x1; x <= x2; x++)
-		thicksidecol[x] = FixedDiv(ds->thicksidecol[x], wall_scalex) + ds->offsetx;
+	if (wall_scalex == FRACUNIT)
+	{
+		for (INT32 x = x1; x <= x2; x++)
+			thicksidecol[x] = ds->thicksidecol[x] + ds->offsetx;
+	}
+	else
+	{
+		for (INT32 x = x1; x <= x2; x++)
+			thicksidecol[x] = FixedDiv(ds->thicksidecol[x], wall_scalex) + ds->offsetx;
+	}
 
 	mfloorclip = ds->sprbottomclip;
 	mceilingclip = ds->sprtopclip;