Short:    Ppc c2p converters (8bpp and 15bpp)
Author:   Jacek Cybularczyk (noe^venus art)
Uploader: elf^va (bjsebo@jota.ii.tuniv.szczecin.pl)
Type:     dev/asm

 This archive contains 2 c2p converters written by Noe. Both
are very fast (actually I did not find any faster c2p for ppc).

Two functions are included:

VOID RGB15_TO_HAM6_NI(UWORD *RGB15, ULONG **Planes,ULONG Width, ULONG Height);
 Chunky buffer must be filled with 15bit rgb values (0rrrrrgggggbbbbb).
Conversion is done to first 4 planes plane 5 and 6 should be filled
with mask values:
   plane5 = 0x77777777
   plane7 = 0xeeeeeeee;
Remember that you need to open HAM6 screen (depth = 6), to use this c2p()

VOID C2P_NI(UBYTE *Chunky, ULONG **Planes,ULONG Width, ULONG Height);
Nothing fancy here. Simple (but fast) c2p routine. Converts 8 bit
chunky (paletized mode) to planar display.

Also look at HowToUse.c. There is an example (and a speed test) in C.

And if you can make this c2p routines faster - please contact us.

You can use this c2p routines for any purposes. But if you use it, 
please put my name in credit part.

   Jacek Cybularczyk.


============================= Archive contents =============================

Original  Packed Ratio    Date     Time    Name
-------- ------- ----- --------- --------  -------------
   64000   35867 43.9% 17-Feb-99 20:46:52 +test_image.chunky
    3080    1248 59.4% 17-Feb-99 20:47:18 +test_image.palette
  192512  135864 29.4% 17-Nov-97 02:56:06 +test_image.sgi
    6122    1909 68.8% 29-Mar-99 19:30:28 +HowToUse.c
   45221   20352 54.9% 29-Mar-99 19:31:12 +HowToUse.elf
    2081     401 80.7% 29-Mar-99 18:34:04 +macros.i
    1118     654 41.5% 29-Mar-99 19:32:40 +NOE_ppc_c2p.readme
     314     185 41.0% 29-Mar-99 19:02:22 +ppc_c2p.h
    5243    1292 75.3% 29-Mar-99 18:39:52 +ppc_c2p_12bit.s
    5023    1208 75.9% 29-Mar-99 18:40:22 +ppc_c2p_8bit.s
     450     223 50.4% 29-Mar-99 19:10:06 +smakefile
-------- ------- ----- --------- --------
  325164  199203 38.7% 30-Mar-99 22:11:46   11 files