Excuse the coder art — this GIF shows the tile culling debug mode. Blue tiles are the ones that make it to the rasterizer. Notice how the interior of hollow shapes is efficiently skipped.

You can have look at the code and documentation here:
github.com/Geolm/onedraw

Yes brute may work, but actually I'm trying to achieve good performances and use the "right" amount of sdf shapes. My test involved a bit, now I'm using capsule (blue)+box (green, for the sharp endpoints) and biarc (red). Still to handle the worst case (all control points colinear though)

bsky only used the first image of my apng so let's use gif like it's 1998

Testing an approach to break a quadratic bezier into small SDFs:

Blue: straight lines (oriented box SDF)
Green: “pie” caps connecting lines
Red: arcs

Faster than a full bezier SDF, though tricky with large stroke widths.

All done with my open-source GPU renderer github.com/Geolm/onedraw

Hello everyone, I wrote an extensive documentation on the GPU‑driven 2D renderer I’ve been working on.

Check out the overview here: github.com/Geolm/onedra...

If you're interested, here's the repo URL:
github.com/Geolm/onedraw

#GPU #2DGraphics #OpenSource #Metal #Rendering

Another test for my upcoming 2D GPU-driven renderer: 5000 oriented, rounded boxes with transparency.
All alpha blending is computed in-shader.
Everything on screen (UI, text, shapes, etc.) is drawn in a single pass, writing only opaque pixels.
1440p @ 5.43 ms on an M1 Pro

#Metal #Rendering #SDF

Testing the smoothmin operator (iquilezles.org/articles/smin) in my 2D GPU-driven renderer. Performance takes a small hit, but the k-value has to be considered for binning — high k lets circles blend even when they don’t touch.

Just released a side-quest project: leanUI — a super-lightweight, dependency-free immediate-mode UI library in C99. Animated widgets and sleak design github.com/Geolm/leanUI
#C99 #gamedev #opensource #UI #leanUI