AuthorTopic: What is the best to work in 15bits ¿?  (Read 9576 times)

Offline Matriax

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What is the best to work in 15bits ¿?

on: August 11, 2006, 04:07:28 pm
Hello,

Well i going to make gfx for a PDA/PocketPC and need make the graphics in 15bits.

How work on this?

I think work in 32bits mode and after put a filter to convert to 15bits...

But with 15bits the problem is:



If i make color choices after the color change a little etc... and well if possible the colours after the filter is equal or wrong...


Make the gfx in 32 and after a filter to 15 ¿or what i can make?

Offline ndchristie

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Re: What is the best to work in 15bits ¿?

Reply #1 on: August 11, 2006, 04:30:01 pm
my suggestion: work in 8 bits (since youll never need more than that on a PDA) and then convert up if you *must* use a bizzar depth, since then you dont have any problem with losing colors (though you do watse space since you add over 100 unused colors)
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Offline ptoing

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Re: What is the best to work in 15bits ¿?

Reply #2 on: August 11, 2006, 04:32:08 pm
Promotion :P In Promotion you can set bitdepth for each channel from 2-8 so 5,5,5 = 15 bit and you can select if the range gets stretched to full 255 or gets capped.

Adarias: 8 bit colourdepth would give 256 colours total to choose from, with 3/3/2,  3/2/3 or 2/3/3 bits per channel (3/3/2 is what mophun has and it's horrible)

15 bit colourdepth is also what the GBC, GBA and the DS use.
« Last Edit: August 11, 2006, 04:36:06 pm by ptoing »
There are no ugly colours, only ugly combinations of colours.

Offline ndchristie

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Re: What is the best to work in 15bits ¿?

Reply #3 on: August 11, 2006, 05:31:20 pm
oh, that does sound like a very good tool.  could you post a link to where i could see more about it?  googling promotion doesnt work for obvious reasons :P
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Offline ptoing

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Re: What is the best to work in 15bits ¿?

Reply #4 on: August 11, 2006, 05:39:40 pm
There are no ugly colours, only ugly combinations of colours.

Offline ndchristie

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Re: What is the best to work in 15bits ¿?

Reply #5 on: August 11, 2006, 05:58:55 pm
thanks :P
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Offline Matriax

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Re: What is the best to work in 15bits ¿?

Reply #6 on: August 11, 2006, 06:39:03 pm
I used promotion a long time ago... but prefer mspaint and psp, but well i think need practice with promotion.

Thanks ptoing for this i not know promotion had this option.

And when i put 5,5,5 etc... when i go to the palette and try choose colors, all tha colors will be 15bits ¿? say, only show the 15bits colors ¿?

I view with this the colour go to 8in8... for example:

red: 208
green: 208
blue: 208

the next grey is:

red: 212
green: 212
blue: 212

but if 8,8,8 and now is 5,5,5 dif=3,3,3=9 ¿? yes i knows im wrong and the program is correct but i not understand very well this. and for example with 15bits ¿how many colours are?

And in promotion i can convert a 32bit image to 15bit? i want make proofs and if the difference is no much i believe will make the gfx in 32 bit and after apply this filter, mspaint rulez XD, i know promotion is the best program for pixelart but well prefer mspaint.


EDIT: i PUT NEW PROJECT WITH 8,8,8 and when i copy a image of the clipboard to the program decrease to 255 always ¿why? i want the image in 32bits XDD
« Last Edit: August 11, 2006, 06:51:51 pm by Matriax »

Offline ptoing

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Re: What is the best to work in 15bits ¿?

Reply #7 on: August 11, 2006, 07:18:46 pm
Promotion works with 24bit colour 8 bits per channel and it only has 8 bit colour indexes, meaning 256 possible colours 15 bit is 32000something colours to choose from. and when you work in whatever bitdepth promotion wont let you use colours outside that range.
There are no ugly colours, only ugly combinations of colours.

Offline eghost

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Re: What is the best to work in 15bits ¿?

Reply #8 on: August 11, 2006, 07:27:45 pm
15 bit is 32768 colors all told...Sorry to nitpick...

Offline Matriax

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Re: What is the best to work in 15bits ¿?

Reply #9 on: August 11, 2006, 08:59:23 pm
Promotion works with 24bit colour 8 bits per channel and it only has 8 bit colour indexes, meaning 256 possible colours 15 bit is 32000something colours to choose from. and when you work in whatever bitdepth promotion wont let you use colours outside that range.

And why this ¿? i not understand why i can't copy a image with alots of colors(24,32..) and when put in promotion always decrease to 256(workin in 8,8,8)... imagine i would to retouch a photo or anything and when i copy to promotion que quality decrease to much..  ???

In promotion not is possible make gfx with a pallete more than 256 colours?  :o , well not know for my is very strange, prefer mspaint, i have a image to the clipboard and copy in mspaint with for example 56789 and can working on this.

And i make another proof and copy a image with 63colours with 8,8,8 and promotion change the palette is i mae "use current palette" and if choose "optimizez palette" put dithering in the image (with nearest color actived)

is possible this why i have a evaluation version and this is a restriction ¿?