704fef314a
* Fix issue with add transparency mode with blender materials. * Possible fix at frontface flip in the game engine. * Fix color buffering clearing for multiple viewports, it used to clear as if there was one. * Fix for zoom level in user defined viewports, it was based on the full window before, now it is based on the viewport itself. * For user defined viewports, always use Expose instead of Letterbox with bars, the latter doesn't make sense then.