Photoshop for MSX gfx?

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By anonymous

incognito ergo sum (116)

anonymous's picture

12-08-2003, 22:20

Argh.. don't multiply by 36 (255/7), also don't shift down.. These functions work best in my experience:

from 3 bits per channel to 8 bits per channel
if val > 0 then val = (val+1)*32+1

from 8 bits per channel to 3 bits per channel (PC -> MSX):
if val > 0 then val = int((val+31)/32-1)

I developed them myself, they make sure white remains white and medium grey remains medium grey, etc...

By wolf_

Ambassador_ (9956)

wolf_'s picture

13-08-2003, 00:36

err.. can you see the difference between 252,252,252 and 255,255,255, esp. on a CRT monitor ? Smile

and even if you can... do you really care ?

By MOA

Champion (293)

MOA's picture

13-08-2003, 00:43

err.. can you see the difference between 252,252,252 and 255,255,255, esp. on a CRT monitor ? Smile

and even if you can... do you really care ?

GuyveR800 is right. Especially on LCD devices you really need that extra brightness. Use his formulas and you're sure you're okay on any display device.

(maybe 255 vs 252 is not that much of a difference... 7 vs 6 is a huge difference, so make sure 6.6 becomes 7 at least.)

By anonymous

incognito ergo sum (116)

anonymous's picture

13-08-2003, 00:48

err.. can you see the difference between 252,252,252 and 255,255,255, esp. on a CRT monitor ? Smile

and even if you can... do you really care ?
7,7,7 -> 252,252,252 isn't so bad, but using your method 3,3,3 becomes 108,108,108 instead of 127,127,127. You will notice that Smile

By k0ga

Expert (77)

k0ga's picture

16-08-2003, 14:19

I've been using Paint Shop Pro to create palette-based graphics, it works nicely...
Although it doesn't support 9-bit RGB (not 12!) directly, you can always convert them.

I have used Paint Shop Pro 5 for that, and I can say that is better program for it. This version isn't high oriented to layers (although has layers of course). I create a MSX pallete in a 16 colour gfx (you only need that less significant bits was 0). For convert gfx with more number of colours you only have to put this image in 16 bit mode and with subs tool is changin colours to msx colours of image destinity and when origin image has only msx colours you can copy&paste to MSX image without problems.

By Low_Profile

Champion (425)

Low_Profile's picture

04-09-2003, 10:35

Just create high color gfx, save em as a screen 12 image... and convert with compjoetania's screen converter to whatever msx screenmode you like! Tongue

It's one of our more usefull toolies (besides compass) ... at least I thought it was usefull Big smile ... but I'm no real coder, at least... I hate coding Wink

By ro

Scribe (4698)

ro's picture

04-09-2003, 12:26

I've been bussy lately on converting GFX etc.
Came up with a online PHP screen5 viewer, and a reverser too.

I can get MSX-based GFX to load into the GE5.php converter and get it into JPG (including Zoom and Brightness function)

and I could make some stupid JPG/GIF/PNG thingy, parse it throught GE5.php and get a ge5 data file. Still have to be carefull about not using more than 16 colours. Been testing and testing but still not satisfied..
quess I'll stick to MSX DDgraph. And MSD sold me a new mouse so I finally am able to get that piece of soft working again. (by the way, also bussy making a TSR of DD-graph for our kernel... nifty, nifty!)

Oh, the viewer will be on display in a little while, be patient... (working on something here)

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