GLFW 3.2 for Go

Installation

• GLFW C library source is included and built automatically as part of the Go package. But you need to make sure you have dependencies of GLFW:
  • On macOS, you need Xcode or Command Line Tools for Xcode (xcode-select --install) for required headers and libraries.
  • On Ubuntu/Debian-like Linux distributions, you need libgl1-mesa-dev and xorg-dev packages.
  • On CentOS/Fedora-like Linux distributions, you need libX11-devel libXcursor-devel libXrandr-devel libXinerama-devel mesa-libGL-devel libXi-devel packages.
  • See here for full details.
• Go 1.4+ is required on Windows (otherwise you must use MinGW v4.8.1 exactly, see Go issue 8811).

go get -u github.com/go-gl/glfw/v3.2/glfw

Usage

package main

import (
	"runtime"
	"github.com/go-gl/glfw/v3.2/glfw"
)

func init() {
	// This is needed to arrange that main() runs on main thread.
	// See documentation for functions that are only allowed to be called from the main thread.
	runtime.LockOSThread()
}

func main() {
	err := glfw.Init()
	if err != nil {
		panic(err)
	}
	defer glfw.Terminate()

	window, err := glfw.CreateWindow(640, 480, "Testing", nil, nil)
	if err != nil {
		panic(err)
	}

	window.MakeContextCurrent()

	for !window.ShouldClose() {
		// Do OpenGL stuff.
		window.SwapBuffers()
		glfw.PollEvents()
	}
}

Changelog

• Easy go get installation. GLFW source code is now included in-repo and compiled in so you don't have to build GLFW on your own and distribute shared libraries. The revision of GLFW C library used is listed in GLFW_C_REVISION.txt file.
• The error callback is now set internally. Functions return an error with corresponding code and description (do a type assertion to glfw3.Error for accessing the variables) if the error is recoverable. If not a panic will occur.

GLFW 3.2 Specfic Changes

• Added function Window.SetSizeLimits.
• Added function Window.SetAspectRatio.
• Added function Window.SetMonitor.
• Added function Window.Maximize.
• Added function Window.SetIcon.
• Added function Window.Focus.
• Added function GetKeyName.
• Added function VulkanSupported.
• Added function GetTimerValue.
• Added function GetTimerFrequency.
• Added function WaitEventsTimeout.
• Added function SetJoystickCallback.
• Added window hint Maximized.
• Added hint NoAPI.
• Added hint NativeContextAPI.
• Added hint EGLContextAPI.

GLFW 3.1 Specfic Changes

• Added type Cursor.
• Added function Window.SetDropCallback.
• Added function Window.SetCharModsCallback.
• Added function PostEmptyEvent.
• Added function CreateCursor.
• Added function CreateStandardCursor.
• Added function Cursor.Destroy.
• Added function Window.SetCursor.
• Added function Window.GetFrameSize.
• Added window hint Floating.
• Added window hint AutoIconify.
• Added window hint ContextReleaseBehavior.
• Added window hint DoubleBuffer.
• Added hint value AnyReleaseBehavior.
• Added hint value ReleaseBehaviorFlush.
• Added hint value ReleaseBehaviorNone.
• Added hint value DontCare.

API changes

• Window.Iconify Returns an error.
• Window.Restore Returns an error.
• Init Returns an error instead of bool.
• GetJoystickAxes No longer returns an error.
• GetJoystickButtons No longer returns an error.
• GetJoystickName No longer returns an error.
• GetMonitors No longer returns an error.
• GetPrimaryMonitor No longer returns an error.
• Monitor.GetGammaRamp No longer returns an error.
• Monitor.GetVideoMode No longer returns an error.
• Monitor.GetVideoModes No longer returns an error.
• GetCurrentContext No longer returns an error.
• Window.SetCharCallback Accepts rune instead of uint.
• Added type Error.
• Removed SetErrorCallback.
• Removed error code NotInitialized.
• Removed error code NoCurrentContext.
• Removed error code InvalidEnum.
• Removed error code InvalidValue.
• Removed error code OutOfMemory.
• Removed error code PlatformError.
• Removed KeyBracket.
• Renamed Window.SetCharacterCallback to Window.SetCharCallback.
• Renamed Window.GetCursorPosition to GetCursorPos.
• Renamed Window.SetCursorPosition to SetCursorPos.
• Renamed CursorPositionCallback to CursorPosCallback.
• Renamed Window.SetCursorPositionCallback to SetCursorPosCallback.
• Renamed VideoMode to VidMode.
• Renamed Monitor.GetPosition to Monitor.GetPos.
• Renamed Window.GetPosition to Window.GetPos.
• Renamed Window.SetPosition to Window.SetPos.
• Renamed Window.GetAttribute to Window.GetAttrib.
• Renamed Window.SetPositionCallback to Window.SetPosCallback.
• Renamed PositionCallback to PosCallback.
• Ranamed Cursor to CursorMode.
• Renamed StickyKeys to StickyKeysMode.
• Renamed StickyMouseButtons to StickyMouseButtonsMode.
• Renamed ApiUnavailable to APIUnavailable.
• Renamed ClientApi to ClientAPI.
• Renamed OpenglForwardCompatible to OpenGLForwardCompatible.
• Renamed OpenglDebugContext to OpenGLDebugContext.
• Renamed OpenglProfile to OpenGLProfile.
• Renamed SrgbCapable to SRGBCapable.
• Renamed OpenglApi to OpenGLAPI.
• Renamed OpenglEsApi to OpenGLESAPI.
• Renamed OpenglAnyProfile to OpenGLAnyProfile.
• Renamed OpenglCoreProfile to OpenGLCoreProfile.
• Renamed OpenglCompatProfile to OpenGLCompatProfile.
• Renamed KeyKp... to KeyKP....