Bugfix: prevent the "bad drawable" error when showing the OpenGL canvas. #2015 #2099

2014-06-19 10:27:23 +02:00 · 2014-06-19 10:27:23 +02:00 · 89b2fbbae0
commit 89b2fbbae0
parent 41de95fd27
1 changed files with 4 additions and 2 deletions
--- a/lib/Slic3r/GUI/PreviewCanvas.pm
+++ b/lib/Slic3r/GUI/PreviewCanvas.pm
@ -383,8 +383,10 @@ sub InitGL {
 
 sub Render {
    my ($self, $dc) = @_;
- 
-    return unless $self->GetContext;
+    
+    # prevent calling SetCurrent() when window is not shown yet
+    return unless $self->IsShownOnScreen;
+    return unless my $context = $self->GetContext;
    $self->SetCurrent($self->GetContext);
    $self->InitGL;