Transparent grave backgrounds. [Archive] - Team17 Forum

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chronoswin
4 Jun 2008, 12:58
I'm pulling my hair out trying to get transparent backgrounds, I've made the background RGB 0-0-0 and still it shows up in game with a big black background. I don't have photoshop, using gimp.

CyberShadow
4 Jun 2008, 13:06
Gimp's downsampling code has issues. See http://worms2d.info/Colour_map#The_GIMP for instructions on how to get a "pure black" in the downsampled image.

chronoswin
4 Jun 2008, 13:25
No luck, was already set to 0-0-0 still doesn't work. Also tried ms paint same problem. Any other suggestions?

Nando
4 Jun 2008, 19:03
I suppose you mean a "big black background" as in solid black terrain?
If that's the case the colour used can't be #000000.
When reducing the number of colours, GIMP will usually change the black background colour to a similar colour like, for instance, #000100, in the process of creating an optimised palette.
If the instructions on WKB don't work for you (although I don't really see why they shouldn't), you can still avoid the problem by doing the following:
1: Select all black (#000000) parts of your map and delete them (thus making them transparent)
2: Reduce colours to 112 (or less)
3: Change colour mode to RGB again
4: Fill the transparent parts with pure black
5: Reduce colours to 113 (or 1 more than you used before)
6: Save as .png
This method should be fool-proof :p

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