troika VS msdfgen

troika (specifically troika-three-text)

Text is relatively hard to render with WebGL and browsers have a limit, of usually 16 framebuffers that you can use for WebGL contexts. Our charts are written for a WebGL target so we don't want to use up that precious resource for text rendering. In our specific use case we usually have a large degree of control over the browser so we can configure it, but if the target is web we don't have that control. Grabbing a WebGL context also takes a significant period of time, usually a hundred milliseconds or more on my computer, and not displaying data in that time isn't a great user experience.

There's a great WebGL library for doing that on the web using any .ttf, .otf, or .woff font - https://github.com/protectwise/troika/tree/master/packages/t...

This very well explained here https://github.com/Chlumsky/msdfgen and with more details in link d pdf.

Basically, signed distance fields allow high resolution renders from low resolution rasters which represent character shape.

No idea how to help you but I will just drop this since it improved the quality for me by 1000 https://github.com/Chlumsky/msdfgen

And that's the complicated state of the art version for 3D perspective. Other versions are even simpler.

This is known as a “multi-channel signed distance field”, or “msdf”.

https://github.com/Chlumsky/msdfgen

I use this, free and has been very good for me https://github.com/Chlumsky/msdfgen

Distance fields are not slow to render. They don't need a powerful gpu. Valve was already using SDF for textures in 2007 and released a paper about it. MSDF (multi channel signed distance fields) is a popular text libraries for game engine devs that uses distance fields. Distance fields are fast to render in 2D and even 3D. The problem is with everything around it. Lighting, shadows, shading will all require specialized tooling and likely a specialized engine for very little benefit (imo).

Signed distance fields only work well for relatively simple characters.

If you have highly detailed characters like Chinese or emojis, you need larger resolution to faithfully represent every detail. One way to get around excessive memory requirements is to store the characters in their default vector forms and only render the required characters on demand, but then you might as well render them at the required pixel resolution and do away with the additional complexity of SDF rendering.

SDFs are still useful though if you have to render text at many different resolutions, for example on signs in computer games, as seen in the original paper https://steamcdn-a.akamaihd.net/apps/valve/2007/SIGGRAPH2007...

In the past, SDFs also had problems with sharp corners, which has been solved in https://github.com/Chlumsky/msdfgen

MSDFGen looks pretty sweet. https://github.com/Chlumsky/msdfgen