Fix for empty or broken png output.

Fix for instance transformation order error and state invalidation issues with rasterization.

1 files changed, 1 insertions, 3 deletions

diff --git a/src/slic3r/GUI/ProgressStatusBar.cpp b/src/slic3r/GUI/ProgressStatusBar.cpp
index 93ab3feb9..8cdb53c9d 100644
--- a/src/slic3r/GUI/ProgressStatusBar.cpp
+++ b/src/slic3r/GUI/ProgressStatusBar.cpp
@@ -71,14 +71,12 @@ int ProgressStatusBar::get_progress() const
 void ProgressStatusBar::set_progress(int val)
 {
     if(!m_prog->IsShown()) show_progress(true);
+    if(val < 0) return;
 
     if(val == m_prog->GetRange()) {
         m_prog->SetValue(0);
         show_progress(false);
     }
-    else if(val < 0) {
-        m_prog->Pulse();
-    }
     else {
         m_prog->SetValue(val);
     }