From 763bdb5dee8c60eefe34900574e5542db6b58fa3 Mon Sep 17 00:00:00 2001
From: Noisyfox <timemanager.rick@gmail.com>
Date: Mon, 3 Nov 2025 23:05:19 +0800
Subject: [PATCH] Fix gcode viewer wrong layer count when selected printer
 model is BBL while gcode is not

---
 src/libslic3r/GCode/GCodeProcessor.cpp | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/libslic3r/GCode/GCodeProcessor.cpp b/src/libslic3r/GCode/GCodeProcessor.cpp
index f35a4ec705..9f7687d2c6 100644
--- a/src/libslic3r/GCode/GCodeProcessor.cpp
+++ b/src/libslic3r/GCode/GCodeProcessor.cpp
@@ -2440,6 +2440,13 @@ void GCodeProcessor::process_file(const std::string& filename, std::function<voi
             // thus a probability of incorrect substitution is low and the G-code viewer is a consumer-only anyways.
             config.load_from_gcode_file(filename, ForwardCompatibilitySubstitutionRule::EnableSilent);
 
+            // Get the correct printer vendor based on the `printer_model` field
+            auto printer_model_opt = config.opt<ConfigOptionString>("printer_model");
+            if (printer_model_opt && !printer_model_opt->value.empty()) {
+                // TODO: Orca hack, proper vendor check?
+                GCodeProcessor::s_IsBBLPrinter = boost::starts_with(printer_model_opt->value, "Bambu Lab");
+            }
+
             ConfigOptionStrings *filament_color = config.opt<ConfigOptionStrings>("filament_colour");
             ConfigOptionInts    *filament_map   = config.opt<ConfigOptionInts>("filament_map", true);
             if (filament_color && filament_color->size() != filament_map->size()) {