Avoid divide by zero. Fixing this, multi-gpu rendering works with orthographic view
Avoid divide by zero. Fixing this, multi-gpu rendering works with orthographic view

git-svn-id: a0a066a1d7ce87c7a04dae20f169ad0cd8bda35d@473 04231f92-3938-0410-9931-e931ac552b4f

deskvox/deskvox,deskvox/deskvox,deskvox/deskvox,deskvox/deskvox,deskvox/deskvox