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  1. 22:06 < Fernando-Basso> Is alpha channel a gimp-only concept, or it is a general image-related thing?
  2. 22:09 < schumaml> https://en.wikipedia.org/wiki/Glossary_of_computer_graphics#Alpha_channel
  3. 22:09 < Wilber> Title: Glossary of computer graphics - Wikipedia (at en.wikipedia.org)
  4. 22:11 < schumaml> and https://en.wikipedia.org/wiki/Channel_%28digital_image%29#Alpha_channel
  5. 22:11 < Wilber> Title: Channel (digital image) - Wikipedia (at en.wikipedia.org)
  6. 22:12 < schumaml> so, no, it isn't gimp-only, and yes, it is a general image-related thing
  7. 22:13 < schumaml> you might have heard of image files being described as "RGBA" images - the A is the Alpha
  8. 22:14 < Fernando-Basso> And how did you learn all this stuff in order to prgramm gimp itself?
  9. 22:15 < Fernando-Basso> (there was no wikipedia back when gimp was started)
  10. 22:15 < schumaml> there were books
  11. 22:18 < Fernando-Basso> People like you are real heroes.
  12. 22:18 < schumaml> and articles, for example "Porter, Thomas; Tom Duff (1984). "Compositing Digital Images".
  13.                   Computer Graphics. 18 (3)"
  14. 22:20 < schumaml> btw, can I quote the paste few lines and put them on paste.gnome.org? I really want them to
  15.                   show to the others in #gimp :)
  16. 22:20 < Fernando-Basso> Sure.