From 808b3e0e11a0b5e1e12ba640e76c012992b22ae9 Mon Sep 17 00:00:00 2001
From: Fabian Greffrath <fabian@greffrath.com>
Date: Tue, 20 Feb 2024 12:04:32 +0100
Subject: [PATCH] fix translucent columns drawing

Fixes #1513
---
 src/r_draw.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/r_draw.c b/src/r_draw.c
index 079eaf24..1a496809 100644
--- a/src/r_draw.c
+++ b/src/r_draw.c
@@ -267,6 +267,7 @@ void R_DrawTLColumn (void)
             *dest = tranmap[(*dest<<8)+colormap[brightmap[src]][src]]; // phares
             dest += linesize;   // killough 11/98
             frac += fracstep;
+            src = source[(frac>>FRACBITS) & heightmask];
             *dest = tranmap[(*dest<<8)+colormap[brightmap[src]][src]]; // phares
             dest += linesize;   // killough 11/98
             frac += fracstep;