On Tue, Aug 26, 2008 at 06:13:23PM +0000, corvid wrote:
That's the code that paints the stripes that you see initially in images.
Here's what gprof said when I loaded a 2 meg jpeg:
Each sample counts as 0.01 seconds. % cumulative self self total time seconds seconds calls ms/call ms/call name 34.76 0.57 0.57 1 570.00 570.00 dw::fltk::init_rawdatabuffer(int, int, int, int, unsigned char 26.83 1.01 0.44 1536 0.29 0.29 dw::fltk::FltkImgbuf::copyRow(int, unsigned char const*) 25.00 1.42 0.41 379 1.08 1.08 dStr_insert_l 7.32 1.54 0.12 rgb_to_565d(unsigned char const*, unsigned char*, int, int) 0.61 1.55 0.01 7759 0.00 0.00 lout::container::untyped::Iterator::hasNext() ..
If I take out the init_rawdatabuffer() call and put in a bzero() instead, I get:
Each sample counts as 0.01 seconds. % cumulative self self total time seconds seconds calls ms/call ms/call name 51.43 0.54 0.54 1536 0.35 0.36 dw::fltk::FltkImgbuf::copyRow(int, unsigned char const*) 34.29 0.90 0.36 373 0.97 0.97 dStr_insert_l 5.71 0.96 0.06 rgb_to_565d(unsigned char const*, unsigned char*, int, int) 1.90 0.98 0.02 a_Image_imgbuf_new 0.95 0.99 0.01 10868 0.00 0.00 lout::container::untyped::Collection0::AbstractIterator::unref() ..
Any objections, then, to having pictures start out black instead of striped?
Excellent! It really makes a difference in performance - and looks better... Johannes