Thursday, May 25, 2006

Object Layer Control

This picture shows explicit layering control for objects, a proposed extension for X-Plane 850. In this case the blue square, red square, and yellow cube are three separate objects, all sharing a texture. The blue and red objects use polygon-offset (ATTR_poly_os) to avoid flicker. The blue and red objects also contain an experimental layer controll attribute (ATTR_layer_group. The red object has a layer number lower than airports, putting it under the runways, while the blue object contains a layer number higher than airports but lower than 3-d objects, guaranteeing that the yellow cube goes over it and not vice versa. Without these the load order would be random and every object would be on top of the runways.

4 comments:

raato said...

Could this help the issues with converted fs sceneries with object based ground textures?

Benjamin Supnik said...

Yes!! :-)

TheoSDavis said...

Has object layer control been implemented yet?

Benjamin Supnik said...

Hi Theo,

Yes - object layer control is available via the ATTR_layer_group command for objects, and the LAYER_GROUP command for .pol files. It's available starting in 850.