// NewWindow creates a new window for the given dimensions and title.
// The window is created via GLFW.
func NewWindow(settings WindowSettings) (*Window, error) {
// Error callback
glfw.SetErrorCallback(errorCallback)
// Init glfw
logger.Debug("Initializing GLFW")
if !glfw.Init() {
return nil, errors.New("Could not initialise GLFW.")
}
glfw.WindowHint(glfw.Samples, 4)
glfw.WindowHint(glfw.ContextVersionMajor, 3)
glfw.WindowHint(glfw.ContextVersionMinor, 3)
glfw.WindowHint(glfw.OpenglForwardCompatible, glfw.True)
glfw.WindowHint(glfw.OpenglProfile, glfw.OpenglCoreProfile)
glfw.WindowHint(glfw.OpenglDebugContext, 1)
var monitor *glfw.Monitor
var err error
if settings.Fullscreen {
logger.Debug("Get primary monitor to create fullscreen window.")
monitor, err = glfw.GetPrimaryMonitor()
if err != nil {
return nil, err
}
logger.Debug("Checking available video modes:")
videoModes, err := monitor.GetVideoModes()
if err != nil {
return nil, err
}
for _, videoMode := range videoModes {
logger.Debug(fmt.Sprintf("-- %+v", videoMode))
}
idealVideoMode := videoModes[len(videoModes)-1]
settings.Width = idealVideoMode.Width
settings.Height = idealVideoMode.Height
}
// Create window
logger.Info("Creating new window")
window, err := glfw.CreateWindow(settings.Width, settings.Height, settings.Title, monitor, nil)
if err != nil {
return nil, err
}
window.SetKeyCallback(keyCallback)
window.MakeContextCurrent()
window.SetInputMode(glfw.StickyKeys, 1)
// Use vsync
glfw.SwapInterval(1)
w := &Window{
window: window,
Settings: settings,
}
currentWindow = w
return w, nil
}
func CreateWindow(width, height int, name string, fullscreen bool, delegate WindowDelegate, legacy bool) error {
if !glfw.Init() {
return errors.New("Failed to initialize GLFW")
}
defer glfw.Terminate()
glfw.WindowHint(glfw.DepthBits, 16)
if !legacy {
glfw.WindowHint(glfw.ContextVersionMajor, 3)
glfw.WindowHint(glfw.ContextVersionMinor, 2)
glfw.WindowHint(glfw.OpenglProfile, glfw.OpenglCoreProfile)
glfw.WindowHint(glfw.OpenglForwardCompatible, 1)
}
var monitor *glfw.Monitor = nil
var err error = nil
if fullscreen {
monitor, err = glfw.GetPrimaryMonitor()
if err != nil {
return err
}
vidModes, _ := monitor.GetVideoModes()
maxResolution := vidModes[len(vidModes)-1]
width = maxResolution.Width
height = maxResolution.Height
}
window, err := glfw.CreateWindow(width, height, name, monitor, nil)
if err != nil {
return err
}
if fullscreen {
window.SetInputMode(glfw.Cursor, glfw.CursorDisabled)
}
start := time.Now()
last := start
doSimulation := func() {
now := time.Now()
gameTime := GameTime{
now,
now.Sub(start),
now.Sub(last),
}
delegate.Simulate(gameTime)
last = now
}
bindEvents(window, &IdleSimulatorWindowDelegator{
WindowDelegator{delegate},
doSimulation,
})
window.MakeContextCurrent()
glfw.SwapInterval(1)
delegate.Init(window)
frameWidth, frameHeight := window.GetFramebufferSize()
delegate.Reshape(window, frameWidth, frameHeight)
for !window.ShouldClose() {
doSimulation()
if delegate.NeedsRender() {
delegate.Draw(window)
}
window.SwapBuffers()
if delegate.IsIdle() {
glfw.WaitEvents()
} else {
glfw.PollEvents()
}
}
return nil
}