Re: [Gimp-developer] [patch] unbelievable speedup for bumpmap...

2001-04-06 Thread Austin Donnelly
On Thursday, 5 Apr 2001, Georg Acher wrote: I just looked into bumpmap.c and tried to figure out if it can profit from blocking and played a bit with the code. It seems that there is some major (performance) problem with the gimp_pixel_rgn_get/set_row-calls in Gimp 1.2.1. The original

Re: [Gimp-developer] [patch] unbelievable speedup for bumpmap...

2001-04-06 Thread Ernst Lippe
The speedup that you see is probably mainly caused by better caching. There is a bug in the tile cache size for the plugin. The cache is under most circumstances too small and this means that every requested tile is not in the cache and must be transmitted from the main gimp process (SLOW).

Re: [Gimp-developer] [patch] unbelievable speedup for bumpmap...

2001-04-06 Thread Ernst Lippe
Kelly Martin wrote: If the algorithm is pixel-by-pixel (each output pixel depends only on exactly one input pixel from each region being iterated over, and those regions are all the same size) there is absolutely no excuse not to use the pixel region iterator, which will automagically