Skipping Lightroom's built-in render engine?

Hello
I have an export plugin which needs to do its work on the original files.
Is it possible to skip Lightroom’s built-in render engine and let the rendering work completely do in a export filters postProcessRenderedPhotos() by an external tool as described in the Lightroom SDK 4 Programmers Guide in chapter “Defining post-processing of rendered photos”?
At the moment Lightroom’s built-in render creates the images which then are thrown away from my export filter and that leads to bad performance.
Thanks
Daniel

wepurol wrote: "sourceRendition:skipRender() statement..."
Note: I *think* this will only skip "rendering" of the previous stage, which *may* be the Lightroom rendering engine, or *may* be another export filter. If you really want to skip Lightroom's built-in rendering engine you may have to ensure that your export filter is first in line. You can do that by coaching the user, or instantiating a new export session which has the filters rearranged so your export filter is first. I suppose it's possible this request is "forwarded up the chain" directly to the Lr rendering engine - at this point, I'm not sure about it.
Related issue: http://feedback.photoshop.com/photoshop_family/topics/lightroom_sdk_in_no_circumstance_can _skiprender_be_called_by_an_export_service_without_error
For non-OP thread followers, more info here:
http://forums.adobe.com/message/4659895#4659895
http://feedback.photoshop.com/photoshop_family/topics/lightroom_sdk_a_way_to_get_export_de stination_path_before_rendering

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