[RESOLVED] Optimized Cut & Copy in Cairo [L-Plate Learner Edition]

[-Corso->]

Hi all, another question for the Cairo Squad.

I'm wondering if Cairo has an optimized way to do this operation, speedily ?.



Currently I'm using the Cairo.Imagelist to rebuild larger than needed 'chunks' of 2.5D terrain surfaces that are 'already' drawn elsewhere. I do this to 'clean' areas, but it seems like a terrible way of reprinting sections of the screen, especially since I already have an identical copy of the completed terrain sitting waiting on another surface.

I'm wondering if I can trim out a section of the waiting surface to place it upon the final surface. I have to do this hundreds to thousands of times per second, so copying over the entire surface via a mask or end region I expect would be hideously slow.

The image above is simplified but conveys what is happening. I have to chuck on gradient surfaces (several), and non-uniform lighting operations too (all sitting in complete form on other waiting surfaces).

Thanks for any advice.