Package gl is a Go cross-platform binding for OpenGL, with an OpenGL ES 2-like API.
It supports:
-
macOS, Linux and Windows via OpenGL 2.1 backend,
-
iOS and Android via OpenGL ES 2.0 backend,
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Modern Browsers (desktop and mobile) via WebGL 1.0 backend.
It was forked of https://github.com/goxjs/gl with #28 resolved to add concurrency support similar to http://golang.org/x/mobile/gl, from where the project originally stems.
The main differences to http://golang.org/x/mobile/gl are the added support for web (CL 8793), as well as the focus on being a lightweight library with good desktop support instead of a comprehensive framework for mobile development.
go get -u github.com/maja42/gl/...
GOARCH=js go get -u -d github.com/maja42/gl/...This OpenGL binding has a ContextWatcher, which implements glfw.ContextWatcher interface. Recommended usage is with github.com/maja/glfw package, which accepts a ContextWatcher in its Init, and takes on the responsibility of notifying it when context is made current or detached.
if err := glfw.Init(gl.ContextWatcher); err != nil {
// Handle error.
}
defer glfw.Terminate()If you're not using a ContextWatcher-aware glfw library, you must call methods of gl.ContextWatcher yourself whenever you make a context current or detached.
window.MakeContextCurrent()
gl.ContextWatcher.OnMakeCurrent(nil)
glfw.DetachCurrentContext()
gl.ContextWatcher.OnDetach()Note that if you are using a different windowing library than http://github.com/maja/glfw, all calls must happen within the same render thread.
renderThread := render.New()
defer renderThread.Terminate()
gl.Init(renderThread)
renderThread.Enqueue(true, func() {
glfw.Init(gl.ContextWatcher)
window, _ = glfw.CreateWindow(...)
})