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Old 30 May 2006, 21:39   #1
jotd
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Using a WBPattern with more than 256 colors

Hi,

I've got a Pixel64 with 16bit PC 1024x768 screen mode on OS3.9 and I'm very happy with it.
BUT when I try to use a png with more than 256 colors as a WBPattern image, the image is dithered and looks awful, whereas there are in theory 65536 colors available.

Any idea?

thanks
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Old 30 May 2006, 22:45   #2
kriz
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check the datatype, some have a prefs editor.. if not try another/newer.
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Old 31 May 2006, 08:45   #3
Chain
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Quote:
Originally Posted by kriz
check the datatype, some have a prefs editor.. if not try another/newer.

did you set color/remaping to "BEST" in wbpattern ?
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Old 05 June 2006, 16:00   #4
jotd
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Quote:
Originally Posted by Chain
did you set color/remaping to "BEST" in wbpattern ?
I did. I'm using PNGdt44 datatype. When using multiview on the image, the colors are perfect, but when I put the same image in background using WBPattern, it's dithered and terribly looking.

Is there a 256 color limitation to the workbench pattern?
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Old 05 June 2006, 16:44   #5
thomas
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Quote:
I'm using PNGdt44 datatype.
You also need picture.datatype V43 or better. With V40 or less, even the best sub class has to dither to 256 colors.
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Old 05 June 2006, 18:45   #6
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Quote:
Originally Posted by thomas
You also need picture.datatype V43 or better. With V40 or less, even the best sub class has to dither to 256 colors.
I'm running OS3.9, and the version of picture.datatype is 45.17.

Anyway, calling multiview on the image displays it perfectly, without any dithering.
The dithering occurs when I try to configure the PNG picture as a WB pattern

Click image for larger version

Name:	proof.png
Views:	1189
Size:	175.1 KB
ID:	11259

left: multiview, 65536 color PNG, superb. right: wb pattern, 256 color dithered shit

(and yes, I tend to like this little animal too much but I don't want to risk unveiling more of my private life by showing you the rest of my family)
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Old 18 June 2006, 09:59   #7
blade002
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@jotd: Nice Cat you have there!. Im thinking about getting myself a little fuzzball of fluff as well
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Old 18 June 2006, 13:28   #8
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try to save your image as IFF24 then load it as background. If the same happen then it's not PNG datatype's fault then goto 10...

Something must be mark as dithering = ordered, somewhere in your system as someone already suggest.
AFAIR picture datatype and some other datatypes save some preferences in ENV:
anyway good luck and long life to your cat

You could also try to run a Scalos WB, i'm pretty sure you shouldn't meet any problems. Yep i know, it doesn't solve the real problem.
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Old 18 June 2006, 15:07   #9
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I use an AGA OS 3.5 WB without a gfx card. Is there any combo of WB setting & utils I can use to get a perfectly displayed image on the WB background. I have already tried to set color/remaping to "BEST" in wbpattern. I would like a clear background image instead of a fuzzy dithered one. Also does anyone have a WB background with the Amiga boing & OS3.5 logo?
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Old 20 June 2006, 15:56   #10
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Quote:
Solid Snake wrote:
I use an AGA OS 3.5 WB without a gfx card. Is there any combo of WB setting & utils I can use to get a perfectly displayed image on the WB background. I have already tried to set color/remaping to "BEST" in wbpattern. I would like a clear background image instead of a fuzzy dithered one.
This is one of the reasons I hated 3.9 and went back to 3.1. In low colour screenmodes, even perfectly mapped images are stupidly remapped and dithered and there's nothing you can do about it. (not only that, but it's damn slow doing the unnecessary dithering)

Quote:
jotd wrote:
(and yes, I tend to like this little animal too much but I don't want to risk unveiling more of my private life by showing you the rest of my family)
Oh, you just made a big mistake. Now that you have identified your cat, the CIA can just follow him to your house and BAM! "Extraordinary Rendition"!

Send us a postcard from Guantanamo.
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