Tag Archives: Graphics

Jean-Baptiste Rouquier rose to the challenge in my last post: to provide a fast way of storing premultiplied colours in OCaml’s 31bit integers (see his post here). With his kind permission, I’ve included this code (somewhat optimized) in the Colour … Continue reading →

For rendering vector graphics scenes, colours are usually stored with what we call “premultiplied” or “associated” alpha. For instance, opaque dark red is stored as: 0.5, 0, 0, 0.5 (R * A, G * A, B * A, A) instead … Continue reading →