gegl_node_new_processor ()

GeglProcessor *
gegl_node_new_processor (GeglNode *node,
                         const GeglRectangle *rectangle);

gegl_processor_set_level ()

void
gegl_processor_set_level (GeglProcessor *processor,
                          gint level);

gegl_processor_set_scale ()

void
gegl_processor_set_scale (GeglProcessor *processor,
                          gdouble scale);

gegl_processor_set_rectangle ()

void
gegl_processor_set_rectangle (GeglProcessor *processor,
                              const GeglRectangle *rectangle);

Change the rectangle a GeglProcessor is working on.

gegl_processor_work ()

gboolean
gegl_processor_work (GeglProcessor *processor,
                     gdouble *progress);

Do an iteration of work for the processor.

Returns TRUE if there is more work to be done.

--- GeglProcessor *processor = gegl_node_new_processor (node, &roi); double progress;

while (gegl_processor_work (processor, &progress)) g_warning ("f%% complete", progress); g_object_unref (processor);

gegl_processor_get_buffer ()

GeglBuffer *
gegl_processor_get_buffer (GeglProcessor *processor);

Returns the (cache) buffer the processor is rendering into, another way of getting to the same pixel data is calling gegl_node_blit with flags indicating that we want caching and accept dirty data.