From 084dfb249ac0ff8b7a9a70d3a5747a3d40dba4ac Mon Sep 17 00:00:00 2001
From: Stefan Kalscheuer <stefan@stklcode.de>
Date: Sat, 5 Feb 2022 17:12:11 +0100
Subject: [PATCH] adjust cardreader filter to show BMP files

---
 Marlin/src/sd/cardreader.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/Marlin/src/sd/cardreader.cpp b/Marlin/src/sd/cardreader.cpp
index f5b0dae5..36649f59 100644
--- a/Marlin/src/sd/cardreader.cpp
+++ b/Marlin/src/sd/cardreader.cpp
@@ -233,6 +233,12 @@ bool CardReader::is_visible_entity(const dir_t &p OPTARG(CUSTOM_FIRMWARE_UPLOAD,
     || fileIsBinary()                                   // BIN files are accepted
     || (!onlyBin && p.name[8] == 'G'
                  && p.name[9] != '~')                   // Non-backup *.G* files are accepted
+    // PATCH START: KNUTWURST
+    #if ENABLED(KNUTWURST_MEGA_P)
+      || (!onlyBin && p.name[8] == 'B'                  // Bitmap files for Anycubic laser engraving on Mega Pro.
+                   && p.name[9] != '~')
+    #endif
+    // PATCH ENDT: KNUTWURST
   );
 }