NAME

       osgearth_sharedlayer - demonstration of shared layers

SYNOPSIS

       osgearth_sharedlayer --shapefile file.shp

DESCRIPTION

       osgearth_sharedlayer  is  a sample program which demonstrates the use of shared layers.  A
       shared image layer is one  that  becomes  available  to  other  image  layers  during  the
       rendering  phase.   Thus  if you share a layer, you can access it in a customer shader and
       use it to modulate another layer.

       In this example, we render a masking  layer  from  a  shapefile  using  the  rasterization
       (agglite)  driver.  We don't draw this layer directly; instead we use it as a mask and use
       that mask to modulate the imagery layer from a custom shader, drawing random colors  where
       the mask exists.

OPTIONS

       --shapefile file.shp
              Path to the shapefile

                                         24 November 2015                 osgearth_sharedlayer(1)