From 966c18cbadb4a45dccf5d0c5c889ef7bd471152c Mon Sep 17 00:00:00 2001
From: Dima Buzdyk <46728448+buzzhuzz@users.noreply.github.com>
Date: Fri, 24 May 2024 17:00:09 +0500
Subject: [PATCH] fix slow_down_layers (#5396)

Setting slow_down_layers to 2 or more results in wrong number of slowed
down layers.

Do not increment layer_id since bottom layer (#0) handled separately.
---
 src/libslic3r/GCode.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/libslic3r/GCode.cpp b/src/libslic3r/GCode.cpp
index 71614cda04..f0ca33cfe1 100644
--- a/src/libslic3r/GCode.cpp
+++ b/src/libslic3r/GCode.cpp
@@ -5195,7 +5195,7 @@ std::string GCode::_extrude(const ExtrusionPath &path, std::string description,
             speed = m_config.get_abs_value("initial_layer_speed");
     }
     else if(m_config.slow_down_layers > 1){
-        const auto _layer = layer_id() + 1;
+        const auto _layer = layer_id();
         if (_layer > 0 && _layer < m_config.slow_down_layers) {
             const auto first_layer_speed =
                 is_perimeter(path.role())