I will be implementing Nohalo Level 2 for GEGL. This basically involves computing double-density pixel data (with a specialized version of Nohalo Level 1 minus the finishing bilinear) and then running a slightly modified version of Nohalo Level 1. The simplest way of implementing this is by having a small "persistent" array or buffer storing double-density pixel data locally so that the required values from Level 1 are not recomputed over and over. I originally thought that I could simply use GeglBuffers for this purpose, but the GeglBuffer code seems fairly complicated. Instead, I believe that small static arrays could be a better choice. For example, a 64x64 double-density data array can be computed with the buffer data corresponding to a context_rect/fetch_rectangle of size 35x35. When the currently stored static array does not contain the Level 1 data needed to compute the Level 2 value at the current location, it would simply be recomputed, much like they are in gegl_sampler_get_ptr (in gegl-sampler.c). Does anyone have a more elegant solution? Any objection to the use of static arrays for this purpose? Adam Turcotte _______________________________________________ Gegl-developer mailing list Gegl-developer@xxxxxxxxxxxxxxxxxxxxxx https://lists.XCF.Berkeley.EDU/mailman/listinfo/gegl-developer
