func StartDriver(appRoutine func(driver gxui.Driver)) {
if runtime.GOMAXPROCS(-1) < 2 {
runtime.GOMAXPROCS(2)
}
if err := glfw.Init(gl.ContextWatcher); err != nil {
panic(err)
}
defer glfw.Terminate()
driver := &driver{
pendingDriver: make(chan func(), 256),
pendingApp: make(chan func(), 256),
viewports: list.New(),
}
driver.pendingApp <- func() { appRoutine(driver) }
go driver.applicationLoop()
driver.driverLoop()
}
// StartDriver starts the gl driver with the given appRoutine.
func StartDriver(appRoutine func(driver gxui.Driver)) {
if runtime.GOMAXPROCS(-1) < 2 {
runtime.GOMAXPROCS(2)
}
if err := glfw.Init(gl.ContextWatcher); err != nil {
panic(err)
}
defer glfw.Terminate()
driver := &driver{
pendingDriver: NewCallQueue(),
pendingApp: NewCallQueue(),
viewports: list.New(),
pcs: make([]uintptr, 256),
}
driver.pendingApp.Inject(driver.discoverUIGoRoutine)
driver.pendingApp.Inject(func() { appRoutine(driver) })
go driver.applicationLoop()
driver.driverLoop()
}
func main() {
err := glfw.Init(gl.ContextWatcher)
if err != nil {
panic(err)
}
defer glfw.Terminate()
glfw.WindowHint(glfw.StencilBits, 1)
glfw.WindowHint(glfw.Samples, 4)
window, err := glfw.CreateWindow(1000*0.6, 600*0.6, "NanoVGo", nil, nil)
if err != nil {
panic(err)
}
window.SetKeyCallback(key)
window.MakeContextCurrent()
ctx, err := nanovgo.NewContext(0)
defer ctx.Delete()
if err != nil {
panic(err)
}
demoData := LoadDemo(ctx)
glfw.SwapInterval(0)
fps := perfgraph.NewPerfGraph("Frame Time", "sans")
for !window.ShouldClose() {
t, _ := fps.UpdateGraph()
fbWidth, fbHeight := window.GetFramebufferSize()
winWidth, winHeight := window.GetSize()
mx, my := window.GetCursorPos()
pixelRatio := float32(fbWidth) / float32(winWidth)
gl.Viewport(0, 0, fbWidth, fbHeight)
if premult {
gl.ClearColor(0, 0, 0, 0)
} else {
gl.ClearColor(0.3, 0.3, 0.32, 1.0)
}
gl.Clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT | gl.STENCIL_BUFFER_BIT)
gl.Enable(gl.BLEND)
gl.BlendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA)
gl.Enable(gl.CULL_FACE)
gl.Disable(gl.DEPTH_TEST)
ctx.BeginFrame(winWidth, winHeight, pixelRatio)
demo.RenderDemo(ctx, float32(mx), float32(my), float32(winWidth), float32(winHeight), t, blowup, demoData)
fps.RenderGraph(ctx, 5, 5)
ctx.EndFrame()
gl.Enable(gl.DEPTH_TEST)
window.SwapBuffers()
glfw.PollEvents()
}
demoData.FreeData(ctx)
}
func main() {
if err := glfw.Init(nopContextWatcher{}); err != nil {
panic(err)
}
defer glfw.Terminate()
window, err := glfw.CreateWindow(1536, 960, "", nil, nil)
if err != nil {
panic(err)
}
globalWindow = window
window.MakeContextCurrent()
window.SetInputMode(glfw.CursorMode, glfw.CursorHidden)
if err := gl.Init(); nil != err {
panic(err)
}
glfw.SwapInterval(1) // Vsync.
framebufferSizeCallback := func(w *glfw.Window, framebufferSize0, framebufferSize1 int) {
gl.Viewport(0, 0, int32(framebufferSize0), int32(framebufferSize1))
var windowSize [2]int
windowSize[0], windowSize[1] = w.GetSize()
// Update the projection matrix
gl.MatrixMode(gl.PROJECTION)
gl.LoadIdentity()
gl.Ortho(0, float64(windowSize[0]), float64(windowSize[1]), 0, -1, 1)
gl.MatrixMode(gl.MODELVIEW)
}
{
var framebufferSize [2]int
framebufferSize[0], framebufferSize[1] = window.GetFramebufferSize()
framebufferSizeCallback(window, framebufferSize[0], framebufferSize[1])
}
window.SetFramebufferSizeCallback(framebufferSizeCallback)
var inputEventQueue []InputEvent
mousePointer = &Pointer{VirtualCategory: POINTING}
var lastMousePos mgl64.Vec2
lastMousePos[0], lastMousePos[1] = window.GetCursorPos()
MousePos := func(w *glfw.Window, x, y float64) {
//fmt.Println("MousePos:", x, y)
inputEvent := InputEvent{
Pointer: mousePointer,
EventTypes: map[EventType]bool{SLIDER_EVENT: true, AXIS_EVENT: true},
InputId: 0,
Buttons: nil,
Sliders: []float64{x - lastMousePos[0], y - lastMousePos[1]}, // TODO: Do this in a pointer general way?
Axes: []float64{x, y},
}
lastMousePos[0] = x
lastMousePos[1] = y
inputEventQueue = EnqueueInputEvent(inputEvent, inputEventQueue)
}
window.SetCursorPosCallback(MousePos)
MousePos(window, lastMousePos[0], lastMousePos[1])
gl.ClearColor(0.85, 0.85, 0.85, 1)
rand.Seed(4)
var widget = newMultitouchTestBoxWidget(mgl64.Vec2{600, 300}, rand.Intn(6))
var widget2 = newMultitouchTestBoxWidget(mgl64.Vec2{600 + 210, 300 + 210}, rand.Intn(6))
var widget3 = newMultitouchTestBoxWidget(mgl64.Vec2{600 + 210, 300}, rand.Intn(6))
var widget4 = newMultitouchTestBoxWidget(mgl64.Vec2{600, 300 + 210}, rand.Intn(6))
go func() {
<-time.After(5 * time.Second)
log.Println("trigger!")
widget.color++ // HACK: Racy.
glfw.PostEmptyEvent()
}()
for !window.ShouldClose() {
//glfw.PollEvents()
glfw.WaitEvents()
// Process Input.
inputEventQueue = ProcessInputEventQueue(inputEventQueue)
gl.Clear(gl.COLOR_BUFFER_BIT)
widget.Render()
widget2.Render()
widget3.Render()
widget4.Render()
mousePointer.Render()
window.SwapBuffers()
log.Println("swapped buffers")
runtime.Gosched()
}
}
func main() {
if err := glfw.Init(nopContextWatcher{}); err != nil {
panic(err)
}
defer glfw.Terminate()
glfw.WindowHint(glfw.Samples, 8) // Anti-aliasing.
window, err := glfw.CreateWindow(400, 400, "", nil, nil)
if err != nil {
panic(err)
}
window.MakeContextCurrent()
if err := gl.Init(); err != nil {
panic(err)
}
glfw.SwapInterval(1) // Vsync.
InitFont()
defer DeinitFont()
framebufferSizeCallback := func(w *glfw.Window, framebufferSize0, framebufferSize1 int) {
gl.Viewport(0, 0, int32(framebufferSize0), int32(framebufferSize1))
var windowSize [2]int
windowSize[0], windowSize[1] = w.GetSize()
// Update the projection matrix.
gl.MatrixMode(gl.PROJECTION)
gl.LoadIdentity()
gl.Ortho(0, float64(windowSize[0]), float64(windowSize[1]), 0, -1, 1)
gl.MatrixMode(gl.MODELVIEW)
}
{
var framebufferSize [2]int
framebufferSize[0], framebufferSize[1] = window.GetFramebufferSize()
framebufferSizeCallback(window, framebufferSize[0], framebufferSize[1])
}
window.SetFramebufferSizeCallback(framebufferSizeCallback)
var inputEventQueue []events.InputEvent
mousePointer = &events.Pointer{VirtualCategory: events.POINTING}
window.SetMouseMovementCallback(func(w *glfw.Window, xpos, ypos, xdelta, ydelta float64) {
inputEvent := events.InputEvent{
Pointer: mousePointer,
EventTypes: map[events.EventType]struct{}{events.SLIDER_EVENT: {}},
InputId: 0,
Buttons: nil,
Sliders: []float64{xdelta, ydelta},
}
if w.GetInputMode(glfw.CursorMode) != glfw.CursorDisabled {
inputEvent.EventTypes[events.AXIS_EVENT] = struct{}{}
inputEvent.Axes = []float64{xpos, ypos}
}
inputEventQueue = events.EnqueueInputEvent(inputEventQueue, inputEvent)
})
window.SetMouseButtonCallback(func(w *glfw.Window, button glfw.MouseButton, action glfw.Action, mods glfw.ModifierKey) {
inputEvent := events.InputEvent{
Pointer: mousePointer,
EventTypes: map[events.EventType]struct{}{events.BUTTON_EVENT: {}},
InputId: uint16(button),
Buttons: []bool{action != glfw.Release},
Sliders: nil,
Axes: nil,
ModifierKey: uint8(mods),
}
inputEventQueue = events.EnqueueInputEvent(inputEventQueue, inputEvent)
})
go func() {
<-time.After(5 * time.Second)
log.Println("trigger!")
boxUpdated = true
glfw.PostEmptyEvent()
}()
gl.BlendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA) // For font.
gl.ClearColor(247.0/255, 247.0/255, 247.0/255, 1)
var spinner int
var widgets []events.Widgeter
widgets = append(widgets, NewButtonWidget(mgl64.Vec2{50, 200}, func() { fmt.Println("button triggered") }))
for !window.ShouldClose() && glfw.Press != window.GetKey(glfw.KeyEscape) {
glfw.WaitEvents()
// Process Input.
inputEventQueue = events.ProcessInputEventQueue(inputEventQueue, widgets[0])
gl.Clear(gl.COLOR_BUFFER_BIT)
gl.LoadIdentity()
for _, widget := range widgets {
widget.Render()
}
drawSpinner(spinner)
spinner++
drawBox()
gl.Color3d(1, 0, 0)
NewOpenGlStream(mgl64.Vec2{50, 300}).PrintText(` !"#$%&'()*+,-./
0123456789:;<=>?
@ABCDEFGHIJKLMNO
PQRSTUVWXYZ[\]^_
` + "`" + `abcdefghijklmno
pqrstuvwxyz{|}~`)
window.SwapBuffers()
log.Println("swapped buffers")
//runtime.Gosched()
}
}
func main() {
if err := glfw.Init(gl.ContextWatcher); err != nil {
panic(err)
}
defer glfw.Terminate()
window, err := glfw.CreateWindow(400, 400, "", nil, nil)
if err != nil {
panic(err)
}
window.MakeContextCurrent()
glfw.SwapInterval(1) // Vsync.
framebufferSizeCallback := func(w *glfw.Window, framebufferSize0, framebufferSize1 int) {
gl.Viewport(0, 0, framebufferSize0, framebufferSize1)
var windowSize [2]int
windowSize[0], windowSize[1] = w.GetSize()
_, _ = windowSize[0], windowSize[1]
/*inputEvent := InputEvent{
Pointer: windowPointer,
EventTypes: map[EventType]struct{}{AXIS_EVENT: struct{}{}},
InputId: 0,
Buttons: nil,
Sliders: nil,
Axes: []float64{float64(windowSize[0]), float64(windowSize[1])},
}
inputEventQueue = events.EnqueueInputEvent(inputEventQueue, inputEvent)*/
}
{
var framebufferSize [2]int
framebufferSize[0], framebufferSize[1] = window.GetFramebufferSize()
framebufferSizeCallback(window, framebufferSize[0], framebufferSize[1])
}
window.SetFramebufferSizeCallback(framebufferSizeCallback)
var inputEventQueue []events.InputEvent
mousePointer = &events.Pointer{VirtualCategory: events.POINTING}
keyboardPointer = &events.Pointer{VirtualCategory: events.TYPING}
window.SetMouseMovementCallback(func(w *glfw.Window, xpos, ypos, xdelta, ydelta float64) {
inputEvent := events.InputEvent{
Pointer: mousePointer,
EventTypes: map[events.EventType]struct{}{events.SLIDER_EVENT: {}},
InputId: 0,
Buttons: nil,
Sliders: []float64{xdelta, ydelta},
}
if w.GetInputMode(glfw.CursorMode) != glfw.CursorDisabled {
inputEvent.EventTypes[events.AXIS_EVENT] = struct{}{}
inputEvent.Axes = []float64{xpos, ypos}
}
inputEventQueue = events.EnqueueInputEvent(inputEventQueue, inputEvent)
})
window.SetScrollCallback(func(w *glfw.Window, xoff float64, yoff float64) {
inputEvent := events.InputEvent{
Pointer: mousePointer,
EventTypes: map[events.EventType]struct{}{events.SLIDER_EVENT: {}},
InputId: 2,
Buttons: nil,
Sliders: []float64{yoff, xoff},
Axes: nil,
}
inputEventQueue = events.EnqueueInputEvent(inputEventQueue, inputEvent)
})
window.SetMouseButtonCallback(func(w *glfw.Window, button glfw.MouseButton, action glfw.Action, mods glfw.ModifierKey) {
inputEvent := events.InputEvent{
Pointer: mousePointer,
EventTypes: map[events.EventType]struct{}{events.BUTTON_EVENT: {}},
InputId: uint16(button),
Buttons: []bool{action != glfw.Release},
Sliders: nil,
Axes: nil,
ModifierKey: uint8(mods),
}
inputEventQueue = events.EnqueueInputEvent(inputEventQueue, inputEvent)
})
window.SetKeyCallback(func(w *glfw.Window, key glfw.Key, scancode int, action glfw.Action, mods glfw.ModifierKey) {
inputEvent := events.InputEvent{
Pointer: keyboardPointer,
EventTypes: map[events.EventType]struct{}{events.BUTTON_EVENT: {}},
InputId: uint16(key),
Buttons: []bool{action != glfw.Release},
Sliders: nil,
Axes: nil,
ModifierKey: uint8(mods),
}
inputEventQueue = events.EnqueueInputEvent(inputEventQueue, inputEvent)
// HACK.
switch {
case key == glfw.Key1 && action == glfw.Press:
window.SetInputMode(glfw.CursorMode, glfw.CursorNormal)
case key == glfw.Key2 && action == glfw.Press:
window.SetInputMode(glfw.CursorMode, glfw.CursorHidden)
case key == glfw.Key3 && action == glfw.Press:
window.SetInputMode(glfw.CursorMode, glfw.CursorDisabled)
}
})
window.SetCharCallback(func(w *glfw.Window, char rune) {
inputEvent := events.InputEvent{
Pointer: keyboardPointer,
EventTypes: map[events.EventType]struct{}{events.CHARACTER_EVENT: {}},
InputId: uint16(char),
Buttons: nil,
Sliders: nil,
Axes: nil,
}
inputEventQueue = events.EnqueueInputEvent(inputEventQueue, inputEvent)
})
gl.ClearColor(0.85, 0.85, 0.85, 1)
for !window.ShouldClose() {
glfw.PollEvents()
// Process Input.
inputEventQueue = processInputEventQueue(inputEventQueue)
gl.Clear(gl.COLOR_BUFFER_BIT)
mousePointer.Render()
window.SwapBuffers()
runtime.Gosched()
}
}