Conversation

Notices

1. Embed this notice
   John Nesky (johnnesky@mastodon.gamedev.place)'s status on Wednesday, 03-Jan-2024 00:26:03 JST John Nesky

   Sometimes I want to make a browser-based art tool, but then I remember that browsers don't have any built-in gamma correct alpha blending. I could implement my own, but I'd have to implement everything else too, like masking and vector graphics paths. Which is exactly the sort of reinventing-the-wheel that I enjoy doing, but I don't have enough free time to justify adding all that to my side projects so instead I just get sad.

   • Embed this notice
     Ethan Black (golemwire@social.librem.one)'s status on Wednesday, 03-Jan-2024 00:25:54 JST Ethan Black

     in reply to

     @johnnesky Maybe if it's a paletted or low-bits-per-channel (pixel art?) editor where the minimum distance between two colors is greater than or equal to the distance between the darkest colors in linear 8bpc RGB. If that makes any sense; I'm not a colors expert.

   • Embed this notice
     John Nesky (johnnesky@mastodon.gamedev.place)'s status on Wednesday, 03-Jan-2024 00:26:01 JST John Nesky

     in reply to

     Wait what if I just convert all my colors to linear RGB values anyway, use those in standard browser graphics APIs and pretend that I'm doing all blending in linear RGB space, then perform a single transformation on the final image to convert it to real sRGB for display? I'd probably lose a lot of color depth in the darker colors unfortunately, maybe too much to be worthwhile. :/

   • Embed this notice
     Ethan Black (golemwire@social.librem.one)'s status on Wednesday, 03-Jan-2024 00:39:00 JST Ethan Black

     in reply to

     @johnnesky Weird idea, but what if you store in sRGB, convert to 10bpc linear RGB, and call browser APIs using 8bpc linear RGB with four pixels to an on-screen pixel? Basically the classic downscaling-to-antialias thing but used just to limit the banding effect of converting 8bpc linear RGB to 8bpc sRGB.