wtf is osmesa-src?

OSMesa is a graphics rendering library that lets you draw images without needing a display screen. This repo packages up the OSMesa source code along with build scripts that make it easy to compile on Linux and Mac computers. Normally, if you want to use OSMesa in a Rust project, you'd have to download the source code yourself and figure out how to compile it for your specific system. This can be tedious and error-prone. This repo automates that process: it provides the source code and Cargo build scripts (Cargo is Rust's standard package manager) that handle compilation automatically. When you add this as a dependency in your Rust project, it downloads and builds OSMesa for you without any extra work. You'd use this if you're building a Rust application that needs to render graphics programmatically, for example, generating images on a server without a graphical display, creating visualizations in batch processing jobs, or building tools that manipulate 3D graphics offline. Instead of manually managing OSMesa as a separate system dependency, you can declare it in your project's configuration and let Cargo handle everything. The project is essentially a convenience wrapper: it takes an existing open-source graphics library and makes it accessible to Rust developers by automating the build process. Rather than requiring users to install OSMesa through their system's package manager or compile it by hand, this lets Rust developers treat it like any other code dependency.