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Real-time, cross-platform 3D graphics engine library for/in Go (the next-gen C); runs on OpenGL Core Profile (v3.3 or newer) and GLFW; parallelized/multi-core render pipeline — textured primitive meshes — scene-graph — cubemapped sky-mesh (cube, dome, etc.) — GLSL 'über-shader' permutation — post-processing FX — per-face multi-texturing/materials/effects — disk cache for on-demand pre-processed textures — render batching — frustum culling — HDR lighting — deferred shading

Virtual database driver (implementing golang.org/pkg/database/sql interfaces) with a backing store of local JSON or TOML data text-files as 'DB tables'.

Minimal web server for 'mostly static, mildly dynamic' sites in Go; stand-alone or on App Engine — runs this very web site; includes a Bootstrap/jQuery-based seed-site

Utility library for cross-platform, core-profile OpenGL graphics programming in Go — 'sane no-overhead wrappers' for real-time use-cases

A DOM API library for handling Collada documents in Go code; supports Collada 1.4.1 and 1.5

My go:ngine supports only one file format for importing assets: Collada. The format is quite expressive, going way beyond mere geometry meshes.

The 'swiss army knife' build tool of my dreams for Go projects: template-based code-gen pre-processor & documentation generator; run golint, go vet, or any other specified pre-build commands

A DOM API library for handling XML Schema Definition (XSD) documents in Go code; includes a source-code generator to instantly create 'native Golang bindings' for any given XML Schema Definition

...under OpenGL 3.2 core profile only, that is. Of course.

So I needed to hash a set of 3 unsigned integers into one integer value uniquely identifying-representing that particular sequence of uints, to be used as a "hash key" in a map[int]sometype.

Getting seriously tricky stuff done in Go is, time and again, surprisingly simple.

All the general-purpose programming libraries I was missing in vanilla Go; includes graphics, hashing, file I/O, networking, maths/numeric and string-processing helpers that I found indispensible in real-world Go programming