diff --git a/plugins/SimulationView/layers.shader b/plugins/SimulationView/layers.shader
index e6210c2b65..d9115de158 100644
--- a/plugins/SimulationView/layers.shader
+++ b/plugins/SimulationView/layers.shader
@@ -77,77 +77,6 @@ fragment =
         gl_FragColor = v_color;
     }
 
-vertex41core =
-    #version 410
-    uniform highp mat4 u_modelMatrix;
-    uniform highp mat4 u_viewMatrix;
-    uniform highp mat4 u_projectionMatrix;
-
-    uniform lowp float u_active_extruder;
-    uniform lowp float u_shade_factor;
-    uniform highp int u_layer_view_type;
-
-    in highp float a_extruder;
-    in highp float a_line_type;
-    in highp vec4 a_vertex;
-    in lowp vec4 a_color;
-    in lowp vec4 a_material_color;
-
-    out lowp vec4 v_color;
-    out float v_line_type;
-
-    void main()
-    {
-        gl_Position = u_projectionMatrix * u_viewMatrix * u_modelMatrix * a_vertex;
-        v_color = a_color;
-        if ((a_line_type != 8) && (a_line_type != 9)) {
-            v_color = (a_extruder == u_active_extruder) ? v_color : vec4(u_shade_factor * v_color.rgb, v_color.a);
-        }
-
-        v_line_type = a_line_type;
-    }
-
-fragment41core =
-    #version 410
-    in lowp vec4 v_color;
-    in float v_line_type;
-    out vec4 frag_color;
-
-    uniform int u_show_travel_moves;
-    uniform int u_show_helpers;
-    uniform int u_show_skin;
-    uniform int u_show_infill;
-
-    void main()
-    {
-        if ((u_show_travel_moves == 0) && (v_line_type >= 7.5) && (v_line_type <= 9.5)) {  // actually, 8 and 9
-            // discard movements
-            discard;
-        }
-        // helpers: 4, 5, 7, 10
-        if ((u_show_helpers == 0) && (
-            ((v_line_type >= 3.5) && (v_line_type <= 4.5)) ||
-            ((v_line_type >= 6.5) && (v_line_type <= 7.5)) ||
-            ((v_line_type >= 9.5) && (v_line_type <= 10.5)) ||
-            ((v_line_type >= 4.5) && (v_line_type <= 5.5))
-            )) {
-            discard;
-        }
-        // skin: 1, 2, 3
-        if ((u_show_skin == 0) && (
-            (v_line_type >= 0.5) && (v_line_type <= 3.5)
-            )) {
-            discard;
-        }
-        // infill:
-        if ((u_show_infill == 0) && (v_line_type >= 5.5) && (v_line_type <= 6.5)) {
-            // discard movements
-            discard;
-        }
-
-        frag_color = v_color;
-    }
-
 [defaults]
 u_active_extruder = 0.0
 u_shade_factor = 0.60
diff --git a/plugins/SimulationView/layers_shadow.shader b/plugins/SimulationView/layers_shadow.shader
index 4bc2de3d0b..737b66e6f6 100644
--- a/plugins/SimulationView/layers_shadow.shader
+++ b/plugins/SimulationView/layers_shadow.shader
@@ -81,78 +81,6 @@ fragment =
         gl_FragColor = v_color;
     }
 
-vertex41core =
-    #version 410
-    uniform highp mat4 u_modelMatrix;
-    uniform highp mat4 u_viewMatrix;
-    uniform highp mat4 u_projectionMatrix;
-
-    uniform lowp float u_active_extruder;
-    uniform lowp float u_shade_factor;
-    uniform highp int u_layer_view_type;
-
-    in highp float a_extruder;
-    in highp float a_line_type;
-    in highp vec4 a_vertex;
-    in lowp vec4 a_color;
-    in lowp vec4 a_material_color;
-
-    out lowp vec4 v_color;
-    out float v_line_type;
-
-    void main()
-    {
-        gl_Position = u_projectionMatrix * u_viewMatrix * u_modelMatrix * a_vertex;
-        v_color = vec4(0.4, 0.4, 0.4, 0.9);    // default color for not current layer
-        // if ((a_line_type != 8) && (a_line_type != 9)) {
-        //     v_color = (a_extruder == u_active_extruder) ? v_color : vec4(u_shade_factor * v_color.rgb, v_color.a);
-        // }
-
-        v_line_type = a_line_type;
-    }
-
-fragment41core =
-    #version 410
-    in lowp vec4 v_color;
-    in float v_line_type;
-    out vec4 frag_color;
-
-    uniform int u_show_travel_moves;
-    uniform int u_show_helpers;
-    uniform int u_show_skin;
-    uniform int u_show_infill;
-
-    void main()
-    {
-        if ((u_show_travel_moves == 0) && (v_line_type >= 7.5) && (v_line_type <= 9.5)) {  // actually, 8 and 9
-            // discard movements
-            discard;
-        }
-        // helpers: 4, 5, 7, 10, 11
-        if ((u_show_helpers == 0) && (
-            ((v_line_type >= 3.5) && (v_line_type <= 4.5)) ||
-            ((v_line_type >= 6.5) && (v_line_type <= 7.5)) ||
-            ((v_line_type >= 9.5) && (v_line_type <= 10.5)) ||
-            ((v_line_type >= 4.5) && (v_line_type <= 5.5)) ||
-            ((v_line_type >= 10.5) && (v_line_type <= 11.5))
-            )) {
-            discard;
-        }
-        // skin: 1, 2, 3
-        if ((u_show_skin == 0) && (
-            (v_line_type >= 0.5) && (v_line_type <= 3.5)
-            )) {
-            discard;
-        }
-        // infill:
-        if ((u_show_infill == 0) && (v_line_type >= 5.5) && (v_line_type <= 6.5)) {
-            // discard movements
-            discard;
-        }
-
-        frag_color = v_color;
-    }
-
 [defaults]
 u_active_extruder = 0.0
 u_shade_factor = 0.60