Avoid segfault for trying to refresh a Mesh with no buffers

diff --git a/source/mesh.cpp b/source/mesh.cpp
index 316e5a3aa9f72ecbcfb3d09e5c9bc09e3b79dfe0..45b022facc1edb8a673c4ea5e6d59485bff2b209 100644 (file)
--- a/source/mesh.cpp
+++ b/source/mesh.cpp
@@ -76,6 +76,9 @@ void Mesh::create_buffers()
 
 void Mesh::refresh() const
 {
+       if(!vbuf)
+               return;
+
        vertices.refresh();
        if(dirty)
        {