From: | Sensei |
Date: | 11 Sep 2001 at 15:28:52 |
Subject: | [amiga-c] Re: DataTypes in 15/16 bits |
Czesc Allan!
Dnia 11-Sep-01, Allan Odgaard napisał:
> The reason is that the picture.datatype will apply Floyd Steinberg error
> diffusion to 24 bit images shown in a lower colour resolution (as this
> may improve the display of gradients).
Yep, I know that... But original picture is 16 colours IFF ILBM... And
background color 160,160,128 perfectly match 15/16 bit space if simple
remapping would be used...
Maybe datatypes are converting CMAP pictures to TrueColor and then apply
F&S... That would explain why this happens...
> You should disable dither and probably this will fix the problem. For the
> P96 picture.datatype this was done using an environment variable, but I'm
> quite sure it can be done through the API for OS 3.5+.
Unfortunately I don't have any of them...
ilbm.datatype 44.19 (27/03/99)
picture.datatype 43.41 (20/12/98)
Regards!
Przemyslaw 'SENSEI' Gruchala
code/gfx2d/gfx3d/webmaster
Amiga 1200
Apollo 1240/33 MHz, 18 MB RAM, BTC 33.6 bps
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