Make sure context is current before releasing graphics resources
Fixed by explicitly calling MakeCurrent in the call chain for ReleaseGraphicsResources of vtkTextureObject
Fixes issue [15869] (http://www.vtk.org/Bug/view.php?id=15869)
Fixed by explicitly calling MakeCurrent in the call chain for ReleaseGraphicsResources of vtkTextureObject
Fixes issue [15869] (http://www.vtk.org/Bug/view.php?id=15869)