For raster layers: - We use the JAI tool chain to render into an AWT BufferedImage (one buffer). - And then transfer those bytes over to an SWT Image (second buffer). - And then finally draw the SWT images into a buffer for the layer.
And from there normal "composition" of the layers into a single image takes place: - The buffer from each layer is drawn onto an SWT image - Any outstanding drawing commands (such as visual feedback from the tools) is drawn - Any thing on the glass layer is drawn The resulting image is the "buffer" we use to draw the control when asked by SWT. -- Jody Garnett On Wednesday, 17 April 2013 at 6:29 AM, Juho Kokkonen wrote: > Hi > > I read that udig supports double buffering during render raster layers. I use > mapviewer and i'll set SWT.double_buffered flag at constructor. But how i can > use multi layer renderer on rendering my raster layers? > > - Juho > _______________________________________________ > User-friendly Desktop Internet GIS (uDig) > http://udig.refractions.net > http://lists.refractions.net/mailman/listinfo/udig-devel > >
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