On 18/02/13 19:10, Andrea Aime wrote: > > If you have multiple FeatureTypeStyle object in your SLD Style, commonly > used to get highway style road symbols, or generally speaking for force > a particualr Z order in symbology, a BufferedImage will be allocated for > each of the FTS besides the first one, so that feature can be read > just once > and painted over the different buffers as we go, the buffers are then > merged > to create a single image with the desired z-order > This can be deactivated, there is a rendering hint to do so (don't > remember it by heart). would this be: OPTIMIZE_FTS_RENDERING_KEY ? > > The second one is the label cache: the labels are accumulated during > rendering into > an in memory data structure, and then painted when all of the other > rendering > is done, on top of the existing map. thanks, I didn't find a declared static key for this, but seems like LABEL_CACHE_KEY - should this be set to null? > > For the latter it would be possible to write a label cache that paints > on a separate > buffered image without accumulating labels, assuming there is no > > In both cases it might make sense to have those classes allow a > subclass to > override the generation of the extra back buffers (BufferedImage > today) so > that a disk mem image can be used instead > indeed :)
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