Pixel Joint Forum: Anti Alias for changing background

Message

   Hello, what is the best method to obtain an effective AA on sprites moving on a changing background, for example in side-scrolling games? Is the use of semi-transparent colors the only option?

Thanks :)

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Joseki Seaman Joined: 20 March 2018 Online Status: Offline Posts: 37	Topic: Anti Alias for changing background Posted: 30 January 2013 at 3:12am
	Hello, what is the best method to obtain an effective AA on sprites moving on a changing background, for example in side-scrolling games? Is the use of semi-transparent colors the only option? Thanks :)
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jalonso Admiral Joined: 29 November 2022 Online Status: Offline Posts: 13537	Posted: 30 January 2013 at 8:36am
	Not possible in a true 100% pixel game. The solution for this called 'selout' and is a way to highlight the lineart and diffuse other areas. Most find selout the most complicated technique to get right but its doable. The color pokeman games for GB use this very effectively.
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Joseki Seaman Joined: 20 March 2018 Online Status: Offline Posts: 37	Posted: 30 January 2013 at 8:52am
	Thanks for the hint, will study the subject.
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AtskaHeart Commander Joined: 06 June 2020 Online Status: Offline Posts: 114	Posted: 30 January 2013 at 8:54am
	Yeah, it would be sel-out. Though to be honest, results are a bit ugly aesthetically most of the times.
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cure Commander Joined: 23 March 2022 Online Status: Offline Posts: 2859	Posted: 30 January 2013 at 10:38am
	Sel-out is generally considered bad form, unless the luminescence of your background is rigidly consistent it isn't going to work. Try omitting AA on the sprite's exterior, it shouldn't be necessary really. Otherwise use alpha-transparency.
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