We've been using Skia as our rendering engine for PixiEditor since the beginning. It's an amazing piece of software, but as any general purpose framework/library, it is great until it's not.
Even though I sworn this is the last thing I am gonna reinvent from scratch, here I am. Building a 2D rendering engine on top of Vulkan. I'm gonna call it Arco
My initial goal is to explore whether we can do most of the processing on unpremultiplied surfaces, to save some precious bytes. So far it seems that yes! Maybe I am not far enough into development to see obvious problems.
Got the circles renderin!
To my big surprise, this simple scene is rendering 3-4 times faster than Skia (well, Ganesh backend, didn't test Graphite yet). Additionally, I managed to get more pleasant anti-aliasing visuals for small circles. Here's Skia
The anti aliasing is alternating in the samples, every second circle is anti-aliased.
Arco on the left, Skia on the right:
Zoomed out:
Even more:
Slight difference, yet it is visible.
I followed this fantastic blog post about analytical anti-aliasing. It's amazing, one of the best made blog posts I've read https://blog.frost.kiwi/analytical-anti-aliasing/
Long live SDFs!