AAing without knowing what the background would be
Printed From: Pixel Joint
Category: The Lounge
Forum Name: Resources and Support
Forum Discription: Help your fellow pixel artists out with links to good tutorials, other forums, software, fonts, etc. Bugs and support issues should go here as well.
URL: https://pixeljoint.com/forum/forum_posts.asp?TID=5448
Printed Date: 10 September 2025 at 5:16pm
Topic: AAing without knowing what the background would be
Posted By: spartan_117
Subject: AAing without knowing what the background would be
Date Posted: 25 November 2007 at 1:56am
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hi PJers . i would like to know how to AA a pixel without having a specific background color. Usually i would use that sweet AA tool where you type the rgb values of the 2 colors u want to AA. |
Replies:
Posted By: surt
Date Posted: 25 November 2007 at 2:10am
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If it's for a game, and the platform supports it, I'd say use alpha. If you have a general idea of the intensity range it'll be sitting on you can AA between the source intensity and the closest intensity or the mean intensity in the expected range. It won't always look great, but so long as the expected range isn't too great it should usually look okay. If you have no idea as to what it'll be sitting on then you can't AA as whatever you try has as much chance of increasing aliasing as decreasing it. |
Posted By: spartan_117
Date Posted: 25 November 2007 at 2:25am
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when u say alpha you mean like the alpha channel in photoshop. like using a 50% transparency with the pencil tool. ------------- |
Posted By: surt
Date Posted: 25 November 2007 at 2:26am
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Yep. Then it looks right whatever's behind it. Not for PJ though. PJ don't like no alpha. |
Posted By: spartan_117
Date Posted: 25 November 2007 at 2:30am
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which formats support multiple alpha data
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Posted By: surt
Date Posted: 25 November 2007 at 2:33am
| PNG, TIFF, others. |
Posted By: Monkey 'o Doom
Date Posted: 25 November 2007 at 6:38am
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Also you could export the alpha channel as a separate greyscale image, allowing the image and alpha channel to be in pretty much any format, and just combine them when you're rendering (assuming that this IS for a game). ------------- http://pixelmonkey.ensellitis.com"> 
RPG is numberwang. |
Posted By: spartan_117
Date Posted: 25 November 2007 at 6:57am
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how do i do that in photoshop?
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Posted By: Monkey 'o Doom
Date Posted: 25 November 2007 at 7:32am
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You could open the Channels window and from there turn off the channels you don't want visible, then take a screenshot of what's still displayed. There's probably a more streamlined and elegant way though; check the help file. ------------- http://pixelmonkey.ensellitis.com">
RPG is numberwang. |
Posted By: jalonso
Date Posted: 28 November 2007 at 11:42am
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If you don't know the BG then if any AA is needed, AA inside or selout. If unknown AA is not to be used. Often times, correct lineart requires no AA at all. AA = operator error E: Feel free to flame me, I know better :p ------------- |
Posted By: Doomcreator0
Date Posted: 29 November 2007 at 2:08pm
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Don't AA if it's transparent pixel art, only do it when you have a defined background. ------------- 
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