(11-17-2016, 01:14 AM)Admentus Wrote: If I understand correctly, the GameCube uses 6-bits of precision for the alpha channel (which should be the EFB channel and the three RGB color channels) while Dolphin actually used 8-bits for each channel.
The alpha channel is separate from the three RGB channels. (I'm not sure what you mean by the EFB channel.) The GameCube uses 6 bits for all four channels, and Dolphin used to use 8 bits for all four channels. When the option was added, Dolphin was changed to always use 6 bits for the alpha channel and either 6 or 8 bits (depending on the option) for the RGB channels.
Ed, Edd n Eddy will run into issues if the alpha channel is 8 bits.
(11-17-2016, 01:14 AM)Admentus Wrote: So disabling the option (which is the new option right?) allows Dolphin to actually use 6-bits of precision for each channel as expected. Using 8-bits instead should decrease the color banding for increased quality. If I am correctly so far. So with the option enabled Dolphin uses 24-bit RGB colors (which would be 8-bit per RGB color channel) and the remaining 8-bit for the alpha channel. I believe I am somehow messing up my general understanding of the color use...
Yes, except Dolphin's alpha channel is always 6-bit if you're using a version where the option exists.