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Old 22 April 2020, 22:12   #21
malko
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I had a quick look and seems there is already an issue with your original image as if I download an open it in GraphX2, then check the palette, there are 256 colours used.

If I take the same game screenshot on my computer and check the palette, there are only 70 colours.

Do you take the screenshot by using the " END + PrintScreen " facility ?

Last edited by malko; 22 April 2020 at 23:04. Reason: typo
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Old 22 April 2020, 23:42   #22
Loki762
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Yes, it is a screen grap and then I cropped the relevant so I could fit it for 320z128 pixels. However it shows 256 colors used in my picture tool (Faststone Capture) when in PNG format. When I then export it to IFF (with XnView) and show it in Windows then it looks fine but when I then copy it to my Amiga (or WinUAE) then it shows up weird in the Amiga..

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Originally Posted by malko View Post
I had a quick look and seems there is already an issue with your original image as if I download an open it in GraphX2, then check the palette, there are 256 colours used.

If I take the same game screenshot on my computer and check the palette, there are only 70 colours.

Do you take the screenshot by using the " END + PrintScreen " facility ?
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Old 23 April 2020, 00:36   #23
malko
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I mean, when you are running WinUAE, don't only press "PrintScreen" but "END+PrintScreen". The image will be saved as PNG in the ScreenShot folder of WinUAE (check the Path in WinUAE).
I have opened the image with GraphX2 & with Gimp (2.10.14). They both report 70 indexed colours. Photoshop 7 (the oldest program ) reports 74 indexed colours. You should not have 255 colours used in this picture.
Below is what I get on the PC side from these 3 program with the "END+PrintScreen" grab.

full size: https://i.ibb.co/fpLj7pV/Cobra-70.png

What program do you use on the Amiga to open the converted iff image ?
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Old 23 April 2020, 02:40   #24
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I might be wrong but it looks to me that first color could cause the problem if not forced to black. Check the palette in xnv ctrl-m.
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Old 23 April 2020, 07:28   #25
Loki762
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The first color seems to be black:



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Originally Posted by Cobe View Post
I might be wrong but it looks to me that first color could cause the problem if not forced to black. Check the palette in xnv ctrl-m.
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Old 24 April 2020, 01:15   #26
malko
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Here is how the previous screenshot opens with Deluxe Paint IV.
Colour indexation & save to IFF made on the PC with GraphX2 :

(the same 64 colour image has been opened twice on the Amiga. Once in HAM mode, once in "normal" EHB mode)


full size : https://i.ibb.co/xzSVk0N/Cobra-Amiga-Side.png

Everything is as expected. Don't know what is happening on your side. Regarding the final result, I think you can reduce the colours to 32 as the image is still good.
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Old 24 April 2020, 04:27   #27
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Obviously you have to convert the pictures to the AGS 256 palette but as most games are 32 colours at most......

from picture AGASelcter.iff or whatever it is.
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