←back to thread

Shipping textures as PNGs is suboptimal

(gamesbymason.com)
148 points ibobev | 2 comments | 06 Sep 25 20:37 UTC | HN request time: 0.561s | source
Show context
smallstepforman ◴[07 Sep 25 06:24 UTC] No.45155865[source]▶
I’ve been using bc7 since 2012, and even have a video codec using bc7 keyframes (we needed alpha videos, even have a patent for it). Our emphasis is not file size, but playback speed. Bc7 renders 20-40% faster than raw rgba32, and we overlay 5-7 videos on screen simultanously, so every boost helps.

We also have custom encoders for the custom video format.

replies(3): >>45156041 #>>45156200 #>>45159790 #
1. _def ◴[07 Sep 25 07:06 UTC] No.45156041[source]▶
Is there some open equivalent of alpha in videos?
replies(1): >>45157047 #
2. the8472 ◴[07 Sep 25 10:45 UTC] No.45157047[source]▶
vp9 and avif have alpha, whether it's patented I don't know.

https://pomf2.lain.la/f/kg9r139e.webm needs non-black background, change the <html> element's background-color in developer tools if necessary