raveling@isi.edu (Paul Raveling) (01/10/90)
To answer what's quickly becoming a common request, C code for the new color quantization algorithm I described WILL be publicly available, but probably not until about the start of February. Before being unleashed, it needs some final detailing and more testing. It'll be merged into an updated copy of the Img Software set that should also fix some minor bugs in the copy distributed with X11R4. Since about 50% of the email requests I've received asks about PC's, please note that one of those unfinished details is trying out 5-bit and 4-bit prequantization, instead of 6-bit. This could shrink a 1 megabyte color pointer array to 128K or 16K, respectively. Another detail on PC's is that certain critical code uses if/then/else logic that flies on my 68K-based workstation, but it'll bog an 80x86 down badly due to queue flushes. Performance loss due to queue flushes will probably be about a factor of 10 in critical per-pixel logic. I'm sure not everyone with an 80x86 is ready to buy something better, so I'll (again) sweat some blood to minimize flushing. ---------------- Paul Raveling Raveling@isi.edu