From d8f0c0bdff00975d6f7c97ebc3d7ae7b8bf3abd7 Mon Sep 17 00:00:00 2001
From: bubnikv <bubnikv@gmail.com>
Date: Mon, 20 Mar 2017 15:55:22 +0100
Subject: [PATCH] Fixed bug in variable layer height editing: Make the OpenGL
 context current.

---
 lib/Slic3r/GUI/3DScene.pm | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lib/Slic3r/GUI/3DScene.pm b/lib/Slic3r/GUI/3DScene.pm
index 391105c0d..c417c85b4 100644
--- a/lib/Slic3r/GUI/3DScene.pm
+++ b/lib/Slic3r/GUI/3DScene.pm
@@ -192,6 +192,7 @@ sub layer_editing_enabled {
             if (! $self->{layer_editing_initialized}) {
                 # Enabling the layer editing for the first time. This triggers compilation of the necessary OpenGL shaders.
                 # If compilation fails, a message box is shown with the error codes.
+                $self->SetCurrent($self->GetContext);
                 my $shader = new Slic3r::GUI::_3DScene::GLShader;
                 my $error_message;
                 if (! $shader->load($self->_fragment_shader_variable_layer_height, $self->_vertex_shader_variable_layer_height)) {