On Thu, Jun 27, 2013 at 3:46 AM, Jon Nordby <jono...@gmail.com> wrote:
> > On 27 June 2013 09:15, Alberto Mardegan <ma...@users.sourceforge.net>wrote: > >> Does setting a property have any immediate effect on the rendering, or >> does that happen only when gegl_node_process() is called? >> Could the order of setting properties have any effect on the rendering >> results or performance? >> > Setting properties on a node in a graph invalidates the graph. > Computing/rendering the invalidated regions is done as a separate step, and > it is the application code which controls this. So whether multiple > invalidation are coalesced or not depends on that code. > To clarify this, if you set properties one at a time it will invalidate the graph once for each property. If a property changes the size of the node's output you may end up invalidating more than would otherwise be necessary, but it shouldn't be a huge cost.
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