// initGL initializes GLFW and OpenGL.
func initGL() error {
err := glfw.Init()
if err != nil {
return err
}
err = glfw.OpenWindow(640, 480, 8, 8, 8, 8, 0, 0, glfw.Windowed)
if err != nil {
glfw.Terminate()
return err
}
glfw.SetWindowTitle("go-gl/gltext: Bitmap font example")
glfw.SetSwapInterval(1)
glfw.SetWindowSizeCallback(onResize)
glfw.SetKeyCallback(onKey)
errno := gl.Init()
if errno != gl.NO_ERROR {
str, err := glu.ErrorString(errno)
if err != nil {
return fmt.Errorf("Unknown openGL error: %d", errno)
}
return fmt.Errorf(str)
}
gl.Disable(gl.DEPTH_TEST)
gl.Disable(gl.LIGHTING)
gl.ClearColor(0.2, 0.2, 0.23, 0.0)
return nil
}
func (i *IO) Init(title string, screenSize int, onCloseHandler func()) error {
i.KeyHandler = new(KeyHandler)
i.Display = new(Display)
i.ScreenOutputChannel = make(chan *types.Screen)
i.AudioOutputChannel = make(chan int)
if err := glfw.Init(); err != nil {
return err
} else if err = i.Display.init(title, screenSize); err != nil {
return err
}
i.KeyHandler.Init(DefaultControlScheme) //TODO: allow user to define controlscheme
glfw.SetKeyCallback(func(key, state int) {
if state == glfw.KeyPress {
i.KeyHandler.KeyDown(key)
} else {
i.KeyHandler.KeyUp(key)
}
})
glfw.SetWindowCloseCallback(func() int {
glfw.CloseWindow()
glfw.Terminate()
onCloseHandler()
return 0
})
return nil
}
// initGL initializes GLFW and OpenGL.
func initGL() error {
err := glfw.Init()
if err != nil {
return err
}
err = glfw.OpenWindow(AtlasSize, AtlasSize, 8, 8, 8, 8, 0, 0, glfw.Windowed)
if err != nil {
glfw.Terminate()
return err
}
glfw.SetWindowTitle("Texture atlas example")
glfw.SetSwapInterval(1)
glfw.SetWindowSizeCallback(onResize)
glfw.SetKeyCallback(onKey)
gl.Init()
if err = glh.CheckGLError(); err != nil {
return err
}
gl.Disable(gl.DEPTH_TEST)
gl.Disable(gl.LIGHTING)
gl.Enable(gl.TEXTURE_2D)
gl.Enable(gl.BLEND)
gl.BlendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA)
gl.ClearColor(0.2, 0.2, 0.23, 1.0)
return nil
}
// initGL initializes GLFW and OpenGL.
func initGL() error {
err := glfw.Init()
if err != nil {
return err
}
glfw.OpenWindowHint(glfw.FsaaSamples, 4)
err = glfw.OpenWindow(512, 512, 8, 8, 8, 8, 0, 0, glfw.Windowed)
if err != nil {
glfw.Terminate()
return err
}
glfw.SetWindowTitle("Meshbuffer 2D example")
glfw.SetSwapInterval(1)
glfw.SetWindowSizeCallback(onResize)
glfw.SetKeyCallback(onKey)
gl.Init()
if err = glh.CheckGLError(); err != nil {
return err
}
gl.Disable(gl.DEPTH_TEST)
gl.Enable(gl.MULTISAMPLE)
gl.Disable(gl.LIGHTING)
gl.Enable(gl.COLOR_MATERIAL)
gl.ClearColor(0.2, 0.2, 0.23, 1.0)
return nil
}
func (i *IO) Init(title string, screenSize int, onCloseHandler func()) error {
var err error
err = glfw.Init()
if err != nil {
return err
}
err = i.Display.init(title, screenSize)
if err != nil {
return err
}
i.KeyHandler.Init(DefaultControlScheme) //TODO: allow user to define controlscheme
glfw.SetKeyCallback(func(key, state int) {
if state == glfw.KeyPress {
i.KeyHandler.KeyDown(key)
} else {
i.KeyHandler.KeyUp(key)
}
})
glfw.SetWindowCloseCallback(func() int {
glfw.CloseWindow()
glfw.Terminate()
onCloseHandler()
return 0
})
return nil
}
func KeyChan() chan DigiState {
out := make(chan DigiState)
glfw.SetKeyCallback(func(key, state int) {
go func() { out <- DigiState{key, state} }()
})
return out
}
func main() {
var err error
if err = glfw.Init(); err != nil { ///初始化环境
log.Fatalf("%v\n", err)
return
}
defer glfw.Terminate() /// 销毁环境
if err = glfw.OpenWindow(Width, Height, 8, 8, 8, 8, 0, 8, glfw.Windowed); err != nil { ///创建窗口
log.Fatalf("%v\n", err)
return
}
defer glfw.CloseWindow() /// 销毁窗口
glfw.SetSwapInterval(1)
glfw.SetWindowTitle(Title) ///设置标题
glfw.SetWindowSizeCallback(onResize) /// 回调窗口变化
glfw.SetKeyCallback(onKey) ///回调按键
initGL()
running = true
for running && glfw.WindowParam(glfw.Opened) == 1 {
drawScene()
}
}
func main() {
var err error
if err = glfw.Init(); err != nil {
log.Fatalf("%v\n", err)
return
}
defer glfw.Terminate()
if err = glfw.OpenWindow(Width, Height, 8, 8, 8, 8, 0, 8, glfw.Windowed); err != nil {
log.Fatalf("%v\n", err)
return
}
defer glfw.CloseWindow()
glfw.SetSwapInterval(1)
glfw.SetWindowTitle(Title)
glfw.SetWindowSizeCallback(onResize)
glfw.SetKeyCallback(onKey)
if err = initGL(); err != nil {
log.Fatalf("%v\n", err)
return
}
defer destroyGL()
running = true
for running && glfw.WindowParam(glfw.Opened) == 1 {
drawScene()
}
}
func Init() {
runtime.LockOSThread()
// Initialize GLFW
var err error
if err = glfw.Init(); err != nil {
log.Fatalf("%v\n", err)
return
}
err = glfw.OpenWindow(SCREEN_WIDTH, SCREEN_HEIGHT,
0, 0, 0, 0, 0, 0, glfw.Windowed)
if err != nil {
log.Fatalf("%v\n", err)
return
}
glfw.SetWindowTitle("Mandelbrot")
glfw.SetSwapInterval(1)
glfw.SetWindowSizeCallback(onResize)
glfw.SetWindowCloseCallback(onClose)
glfw.SetMouseButtonCallback(onMouseBtn)
glfw.SetMouseWheelCallback(onMouseWheel)
glfw.SetKeyCallback(onKey)
glfw.SetCharCallback(onChar)
// Initialize OpenGL
gl.Disable(gl.DEPTH_TEST)
gl.ClearColor(0, 0, 0, 0)
}
func main() {
var err error
if err = glfw.Init(); err != nil {
log.Fatalf("%v\n", err)
return
}
defer glfw.Terminate()
if err = glfw.OpenWindow(640, 480, 8, 8, 8, 8, 0, 0, glfw.Windowed); err != nil {
log.Fatalf("%v\n", err)
return
}
defer glfw.CloseWindow()
glfw.SetWindowTitle("Draw")
glfw.SetSwapInterval(1)
glfw.SetKeyCallback(onKey)
glfw.SetMouseButtonCallback(onMouseBtn)
glfw.SetWindowSizeCallback(onResize)
running = true
for running && glfw.WindowParam(glfw.Opened) == 1 {
if mouse[0] != 0 {
pen.lineTo(glfw.MousePos())
} else {
pen.moveTo(glfw.MousePos())
}
glfw.SwapBuffers()
}
}
func StartEngine() {
runtime.GOMAXPROCS(runtime.NumCPU())
runtime.LockOSThread()
fmt.Println("Enginge started!")
var err error
if err = glfw.Init(); err != nil {
panic(err)
}
fmt.Println("GLFW Initialized!")
glfw.OpenWindowHint(glfw.Accelerated, 1)
if err = glfw.OpenWindow(Width, Height, 8, 8, 8, 8, 8, 8, glfw.Windowed); err != nil {
panic(err)
}
glfw.SetSwapInterval(1) //0 to disable vsync, 1 to enable it
glfw.SetWindowTitle(windowTitle)
glfw.SetWindowSizeCallback(onResize)
glfw.SetKeyCallback(input.OnKey)
glfw.SetCharCallback(input.OnChar)
glfw.SetMouseButtonCallback(input.ButtonPress)
glfw.SetMouseWheel(0)
glfw.SetMouseWheelCallback(input.MouseWheelCallback)
input.MouseWheelPosition = glfw.MouseWheel
input.MousePosition = glfw.MousePos
if err = initGL(); err != nil {
panic(err)
}
fmt.Println("Opengl Initialized!")
TextureMaterial = NewBasicMaterial(spriteVertexShader, spriteFragmentShader)
err = TextureMaterial.Load()
if err != nil {
fmt.Println(err)
}
SDFMaterial = NewBasicMaterial(sdfVertexShader, sdfFragmentShader)
err = SDFMaterial.Load()
if err != nil {
fmt.Println(err)
}
internalMaterial = NewBasicMaterial(spriteVertexShader, spriteFragmentShader)
err = internalMaterial.Load()
if err != nil {
fmt.Println(err)
}
initDefaultPlane()
glfw.SwapBuffers()
gameTime = time.Time{}
lastTime = time.Now()
dl = glfw.Time()
}
func (rw *RenderWindow) Open() error {
err := glfw.OpenWindow(int(rw.Width), int(rw.Height), 8, 8, 8, 8, 0, 0, glfw.Windowed)
if err != nil {
return err
}
glfw.SetWindowTitle(rw.Title)
glfw.SetSwapInterval(2)
glfw.SetKeyCallback(rw.onKey)
glfw.SetWindowSizeCallback(rw.onResize)
return nil
}
// Wait for an event to be passed into the Events channel and execute the
// corresponding registered actions.
func PullEvents() {
glfw.SetKeyCallback(keyHandler)
glfw.SetWindowCloseCallback(func() int { CloseWindow(); return 0 })
for {
e := <-Events
for r, fn := range registered {
// TODO change this (maps are supposed to work?)
if e.Code() == r.Code() && e.State() == r.State() {
fn()
}
}
}
}
func main() {
var err error
if err = glfw.Init(); err != nil {
fmt.Fprintf(os.Stderr, "[e] %v\n", err)
return
}
// Ensure glfw is cleanly terminated on exit.
defer glfw.Terminate()
if err = glfw.OpenWindow(256, 256, 8, 8, 8, 0, 0, 0, glfw.Windowed); err != nil {
fmt.Fprintf(os.Stderr, "[e] %v\n", err)
return
}
// Ensure window is cleanly closed on exit.
defer glfw.CloseWindow()
// Enable vertical sync on cards that support it.
glfw.SetSwapInterval(1)
// Set window title
glfw.SetWindowTitle("Simple GLFW window")
// Hook some events to demonstrate use of callbacks.
// These are not necessary if you don't need them.
glfw.SetWindowSizeCallback(onResize)
glfw.SetWindowCloseCallback(onClose)
glfw.SetMouseButtonCallback(onMouseBtn)
glfw.SetMouseWheelCallback(onMouseWheel)
glfw.SetKeyCallback(onKey)
glfw.SetCharCallback(onChar)
// Start loop
running := true
for running {
// OpenGL rendering goes here.
// Swap front and back rendering buffers. This also implicitly calls
// glfw.PollEvents(), so we have valid key/mouse/joystick states after
// this. This behavior can be disabled by calling glfw.Disable with the
// argument glfw.AutoPollEvents. You must be sure to manually call
// PollEvents() or WaitEvents() in this case.
glfw.SwapBuffers()
// Break out of loop when Escape key is pressed, or window is closed.
running = glfw.Key(glfw.KeyEsc) == 0 && glfw.WindowParam(glfw.Opened) == 1
}
}
func (d *Device) Init() error {
glfw.SetKeyCallback(func(key, state int) {
var value cpu.Word
if key >= glfw.KeySpecial {
switch key {
case glfw.KeyBackspace:
value = 0x10
case glfw.KeyEnter:
value = 0x11
case glfw.KeyInsert:
value = 0x12
case glfw.KeyDel:
value = 0x13
case glfw.KeyUp:
value = 0x80
case glfw.KeyDown:
value = 0x81
case glfw.KeyLeft:
value = 0x82
case glfw.KeyRight:
value = 0x83
case glfw.KeyLshift, glfw.KeyRshift:
value = 0x90
case glfw.KeyLctrl, glfw.KeyRctrl:
value = 0x91
default:
return // Not supported.
}
} else {
value = cpu.Word(key)
}
d.state[value] = cpu.Word(state)
d.buf = append(d.buf, value)
// Trigger an interrupt if enabled.
if d.id != 0 {
d.int(d.id)
}
})
return nil
}
func InitGL(width, height int) {
//enable vertical sync if the card supports it
glfw.SetSwapInterval(1)
gl.ShadeModel(gl.SMOOTH)
gl.ClearColor(0.1, 0.1, 0.1, 1.0)
gl.Enable(gl.TEXTURE_2D)
gl.Enable(gl.CULL_FACE)
gl.Enable(gl.DEPTH_TEST)
gl.DepthFunc(gl.LEQUAL)
gl.Hint(gl.PERSPECTIVE_CORRECTION_HINT, gl.NICEST)
SetViewport(width, height)
glfw.SetWindowSizeCallback(SetViewport)
glfw.SetKeyCallback(OnKey)
}
// initGL initializes GLFW and OpenGL.
func initGL() error {
err := glfw.Init()
if err != nil {
return err
}
glfw.OpenWindowHint(glfw.FsaaSamples, 4)
glfw.OpenWindowHint(glfw.WindowNoResize, gl.TRUE)
err = glfw.OpenWindow(512, 512, 8, 8, 8, 8, 32, 0, glfw.Windowed)
if err != nil {
glfw.Terminate()
return err
}
glfw.SetWindowTitle("Meshbuffer 3D example")
glfw.SetSwapInterval(1)
glfw.SetWindowSizeCallback(onResize)
glfw.SetKeyCallback(onKey)
gl.Init()
if err = glh.CheckGLError(); err != nil {
return err
}
gl.Enable(gl.DEPTH_TEST)
gl.Enable(gl.MULTISAMPLE)
gl.Disable(gl.LIGHTING)
//gl.ClearColor(0.2, 0.2, 0.23, 1.0)
gl.ClearColor(0, 0, 0, 1.0)
gl.ShadeModel(gl.SMOOTH)
gl.LineWidth(2)
gl.ClearDepth(1)
gl.DepthFunc(gl.LEQUAL)
gl.Hint(gl.PERSPECTIVE_CORRECTION_HINT, gl.NICEST)
gl.ColorMaterial(gl.FRONT_AND_BACK, gl.AMBIENT_AND_DIFFUSE)
return nil
}
func main() {
RunGame(Title, Width*Scale, Height*Scale, func() {
gl.PointSize(1.0 * Scale)
x := 0
y := 0
dcolor := WHITE
glfw.SetMouseButtonCallback(func(button, state int) {
dcolor += 1
if dcolor > BLUE {
dcolor = WHITE
}
})
glfw.SetMousePosCallback(func(mx, my int) {
mx /= Scale
my /= Scale
if mx >= Width || my >= Height || mx < 0 || my < 0 {
return
}
x = mx
y = my
if matrix != nil && dcolor != WHITE {
(*matrix)[x][y].Color = dcolor
(*matrix)[x][y].Intensity = 10
}
})
glfw.SetKeyCallback(func(key, state int) {
matrix = makeMatrix(Width, Height)
})
matrix = makeMatrix(Width, Height)
}, func() {
matrix = NextMatrix(Width, Height, matrix)
gl.Begin(gl.POINTS)
drawMatrix(matrix, Scale, Scale)
gl.End()
})
}
func (s *Sys) runCycles(c int) error {
glfw.SetKeyCallback(func(key, state int) {
// I think there is a chance of key presses being lost when the system
// is sleeping between cycles.
// fmt.Printf("key %x (%v) = %d\n", key, string(key), state)
if k, ok := keyMap[key]; ok {
if state == glfw.KeyPress {
s.key[k] = true
} else {
s.key[k] = false
}
}
})
tick := time.Tick(time.Second / cpuFrequency)
for i := 0; c < 0 || i < c; i++ {
<-tick
if err := s.stepCycle(); err != nil {
return err
}
}
return nil
}
func (w *glfwBackend) Open(width, height, zoom int, fs bool, font *FontData) {
if err := glfw.Init(); err != nil {
panic(err)
}
w.font = font
w.zoom = zoom
w.width = width
w.height = height
var fwidth = width * font.CellWidth * zoom
var fheight = height * font.CellHeight * zoom
var twidth = fwidth
var theight = fheight
flag := glfw.Windowed
if fs {
flag = glfw.Fullscreen
dm := glfw.DesktopMode()
twidth = dm.W
theight = dm.H
}
glfw.OpenWindowHint(glfw.WindowNoResize, gl.TRUE)
err := glfw.OpenWindow(twidth, theight, 8, 8, 8, 8, 0, 0, flag)
if err != nil {
panic(err)
}
w.key = NOKEY
glfw.SetWindowCloseCallback(func() int { w.Close(); return 0 })
glfw.SetKeyCallback(func(key, state int) { w.setKey(key, state) })
glfw.SetCharCallback(func(key, state int) { w.setKey(key, state) })
glfw.Enable(glfw.KeyRepeat)
w.mouse = new(MouseData)
glfw.Enable(glfw.MouseCursor)
glfw.SetMousePosCallback(func(x, y int) { w.mouseMove(x, y) })
glfw.SetMouseButtonCallback(func(but, state int) { w.mousePress(but, state) })
glfw.Enable(glfw.MouseCursor)
xoff := float32(twidth-fwidth) / 2.0
yoff := float32(theight-fheight) / 2.0
fc := float32(font.CellWidth * zoom)
fch := float32(font.CellHeight * zoom)
for y := 0; y < height; y++ {
for x := 0; x < width; x++ {
cx := xoff + float32(x)*fc
cy := yoff + float32(y)*fch
w.verts = append(w.verts, cx, cy, cx, cy+fch, cx+fc, cy+fch, cx+fc, cy)
}
}
runtime.LockOSThread()
glInit(twidth, theight)
m := font.Image.(*image.RGBA)
w.s = float32(font.CellWidth) / float32(m.Bounds().Max.X)
w.t = float32(font.CellHeight) / float32(m.Bounds().Max.Y)
textures = make([]gl.Uint, 2)
gl.GenTextures(2, &textures[0])
gl.BindTexture(gl.TEXTURE_2D, textures[0])
gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST)
gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST)
gl.TexImage2D(gl.TEXTURE_2D, 0, gl.RGBA, gl.Sizei(m.Bounds().Max.X), gl.Sizei(m.Bounds().Max.Y), 0, gl.RGBA, gl.UNSIGNED_BYTE, gl.Pointer(&m.Pix[0]))
m = image.NewRGBA(image.Rect(0, 0, font.CellWidth, font.CellHeight))
draw.Draw(m, m.Bounds(), &image.Uniform{White}, image.ZP, draw.Src)
gl.BindTexture(gl.TEXTURE_2D, textures[1])
gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST)
gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST)
gl.TexImage2D(gl.TEXTURE_2D, 0, gl.RGBA, gl.Sizei(m.Bounds().Max.X), gl.Sizei(m.Bounds().Max.Y), 0, gl.RGBA, gl.UNSIGNED_BYTE, gl.Pointer(&m.Pix[0]))
w.open = true
}
func main() {
var err error
if err = glfw.Init(); err != nil {
fmt.Fprintf(os.Stderr, "[e] %v\n", err)
return
}
defer glfw.Terminate()
w, h := 1980, 1080
// w, h := 1280, 768
if err = glfw.OpenWindow(w, h, 8, 8, 8, 16, 0, 32, glfw.Fullscreen); err != nil {
fmt.Fprintf(os.Stderr, "[e] %v\n", err)
return
}
defer glfw.CloseWindow()
glfw.SetSwapInterval(1)
glfw.SetWindowTitle("Debris")
quadric = glu.NewQuadric()
gl.Enable(gl.CULL_FACE)
gl.Enable(gl.DEPTH_TEST)
gl.DepthFunc(gl.LEQUAL)
gl.Enable(gl.NORMALIZE)
gl.Enable(gl.BLEND)
gl.BlendFunc(gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA)
gl.ShadeModel(gl.SMOOTH)
gl.Enable(gl.LIGHTING)
var (
ambient = []float32{0.1, 0.3, 0.6, 1}
diffuse = []float32{1, 1, 0.5, 1}
specular = []float32{0.4, 0.4, 0.4, 1}
light_position = []float32{1, 0, 0, 0}
// mat_specular []float32 = []float32{1, 1, 0.5, 1}
mat_specular = []float32{1, 1, 0.75, 1}
mat_shininess = float32(120)
// light_position []float32 = []float32{0.0, 0.0, 1.0, 0.0}
)
const (
fov = 1.1 // degrees
znear = 145
zfar = 155
camera_z_offset = -150
camera_x_rotation = 0 // degrees
// camera_x_rotation = 20 // degrees
starfield_fov = 45
faces = 1000
earth_radius = 1
)
gl.Lightfv(gl.LIGHT1, gl.AMBIENT, ambient)
gl.Lightfv(gl.LIGHT1, gl.DIFFUSE, diffuse)
gl.Lightfv(gl.LIGHT1, gl.SPECULAR, specular)
gl.Lightfv(gl.LIGHT1, gl.POSITION, light_position)
gl.Enable(gl.LIGHT1)
mat_emission := []float32{0, 0, 0.1, 1}
gl.Materialfv(gl.FRONT_AND_BACK, gl.EMISSION, mat_emission)
gl.Materialfv(gl.FRONT_AND_BACK, gl.SPECULAR, mat_specular)
gl.Materialf(gl.FRONT_AND_BACK, gl.SHININESS, mat_shininess)
gl.ClearColor(0.02, 0.02, 0.02, 1)
gl.ClearDepth(1)
gl.ClearStencil(0)
gl.Clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT)
b := createBuffer()
planetoids := []*Planetoid{}
for i := 0; i < 1000; i++ {
p := &Planetoid{
apogee: 1.2 + rand.Float64()*0.7,
perigee: 1.5,
// inclination: 45,
inclination: rand.Float64()*20 - 10,
// inclination: 0,
phase0: rand.Float64() * 360,
rising_node: rand.Float64() * 10,
phase: 0,
// radius: rand.Float32()*0.05 + 0.01, //float32(r),
radius: rand.Float32()*0.0125 + 0.005, //float32(r),
// quadric: glu.NewQuadric(),
circle: b,
}
planetoids = append(planetoids, p)
}
// Initial projection matrix:
var aspect float64
glfw.SetWindowSizeCallback(func(w, h int) {
gl.Viewport(0, 0, w, h)
gl.MatrixMode(gl.PROJECTION)
gl.LoadIdentity()
aspect = float64(w) / float64(h)
glu.Perspective(fov, aspect, znear, zfar)
})
d := float64(0)
wireframe := false
atmosphere := false
polar := false
rotating := false
front := false
earth := true
cone := true
shadowing := true
tilt := false
running := true
glfw.SetKeyCallback(func(key, state int) {
if state != glfw.KeyPress {
// Don't act on key coming up
return
}
switch key {
case 'A':
atmosphere = !atmosphere
case 'C':
cone = !cone
case 'E':
earth = !earth
case 'R':
rotating = !rotating
case 'F':
front = !front
if front {
gl.FrontFace(gl.CW)
} else {
gl.FrontFace(gl.CCW)
}
case 'S':
shadowing = !shadowing
case 'T':
tilt = !tilt
case 'W':
wireframe = !wireframe
method := gl.GLenum(gl.FILL)
if wireframe {
method = gl.LINE
}
gl.PolygonMode(gl.FRONT_AND_BACK, method)
case glfw.KeyF2:
println("Screenshot captured")
// glh.CaptureToPng("screenshot.png")
w, h := glh.GetViewportWH()
im := image.NewRGBA(image.Rect(0, 0, w, h))
glh.ClearAlpha(1)
gl.Flush()
glh.CaptureRGBA(im)
go func() {
fd, err := os.Create("screenshot.png")
if err != nil {
panic("Unable to open file")
}
defer fd.Close()
png.Encode(fd, im)
}()
case 'Q', glfw.KeyEsc:
running = !running
case glfw.KeySpace:
polar = !polar
}
})
_ = rand.Float64
stars := glh.NewMeshBuffer(
glh.RenderArrays,
glh.NewPositionAttr(3, gl.DOUBLE, gl.STATIC_DRAW),
glh.NewColorAttr(3, gl.DOUBLE, gl.STATIC_DRAW))
const Nstars = 50000
points := make([]float64, 3*Nstars)
colors := make([]float64, 3*Nstars)
for i := 0; i < Nstars; i++ {
const R = 1
phi := rand.Float64() * 2 * math.Pi
z := R * (2*rand.Float64() - 1)
theta := math.Asin(z / R)
points[i*3+0] = R * math.Cos(theta) * math.Cos(phi)
points[i*3+1] = R * math.Cos(theta) * math.Sin(phi)
points[i*3+2] = z
const r = 0.8
v := rand.Float64()*r + (1 - r)
colors[i*3+0] = v
colors[i*3+1] = v
colors[i*3+2] = v
}
stars.Add(points, colors)
render_stars := func() {
glh.With(glh.Attrib{gl.DEPTH_BUFFER_BIT | gl.ENABLE_BIT}, func() {
gl.Disable(gl.LIGHTING)
gl.PointSize(1)
gl.Color4f(1, 1, 1, 1)
gl.Disable(gl.DEPTH_TEST)
gl.DepthMask(false)
stars.Render(gl.POINTS)
})
}
render_scene := func() {
// Update light position (sensitive to current modelview matrix)
gl.Lightfv(gl.LIGHT1, gl.POSITION, light_position)
gl.Lightfv(gl.LIGHT2, gl.POSITION, light_position)
if earth {
Sphere(earth_radius, faces)
}
unlit_points := glh.Compound(glh.Disable(gl.LIGHTING), glh.Primitive{gl.POINTS})
glh.With(unlit_points, func() {
gl.Vertex3d(1, 0, 0)
})
for _, p := range planetoids {
const dt = 0.1 // TODO: Frame update
p.Render(dt)
}
glh.With(glh.Disable(gl.LIGHTING), func() {
// Atmosphere
gl.Color4f(0.25, 0.25, 1, 0.1)
if atmosphere && earth {
Sphere(earth_radius*1.025, 100)
}
gl.PointSize(10)
glh.With(glh.Primitive{gl.POINTS}, func() {
gl.Color4f(1.75, 0.75, 0.75, 1)
gl.Vertex3d(-1.04, 0, 0)
})
})
}
render_shadow_volume := func() {
glh.With(glh.Attrib{
gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT | gl.ENABLE_BIT |
gl.POLYGON_BIT | gl.STENCIL_BUFFER_BIT,
}, func() {
gl.Disable(gl.LIGHTING)
if shadowing {
// gl.Disable(gl.DEPTH_TEST)
gl.DepthMask(false)
gl.DepthFunc(gl.LEQUAL)
gl.Enable(gl.STENCIL_TEST)
gl.ColorMask(false, false, false, false)
gl.StencilFunc(gl.ALWAYS, 1, 0xffffffff)
}
shadow_volume := func() {
const sv_length = 2
const sv_granularity = 100
const sv_radius = earth_radius * 1.001
// Shadow cone
glh.With(glh.Matrix{gl.MODELVIEW}, func() {
gl.Rotatef(90, 1, 0, 0)
gl.Rotatef(90, 0, -1, 0)
gl.Color4f(0.5, 0.5, 0.5, 1)
glu.Cylinder(quadric, sv_radius, sv_radius*1.05,
sv_length, sv_granularity, 1)
glu.Disk(quadric, 0, sv_radius, sv_granularity, 1)
glh.With(glh.Matrix{gl.MODELVIEW}, func() {
gl.Translated(0, 0, sv_length)
glu.Disk(quadric, 0, sv_radius*1.05, sv_granularity, 1)
})
})
for _, p := range planetoids {
p.RenderShadowVolume()
}
}
if cone {
gl.FrontFace(gl.CCW)
gl.StencilOp(gl.KEEP, gl.KEEP, gl.INCR)
shadow_volume()
gl.FrontFace(gl.CW)
gl.StencilOp(gl.KEEP, gl.KEEP, gl.DECR)
shadow_volume()
}
if shadowing {
gl.StencilFunc(gl.NOTEQUAL, 0, 0xffffffff)
gl.StencilOp(gl.KEEP, gl.KEEP, gl.KEEP)
gl.ColorMask(true, true, true, true)
// gl.Disable(gl.STENCIL_TEST)
gl.Disable(gl.DEPTH_TEST)
gl.FrontFace(gl.CCW)
// gl.Color4f(1, 0, 0, 0.75)
gl.Color4f(0, 0, 0, 0.75)
// gl.Color4f(1, 1, 1, 0.75)
gl.LoadIdentity()
gl.Translated(0, 0, camera_z_offset)
// TODO: Figure out why this doesn't draw over the whole screen
glh.With(glh.Disable(gl.LIGHTING), func() {
glh.DrawQuadd(-10, -10, 20, 20)
})
// gl.FrontFace(gl.CW)
// gl.Enable(gl.LIGHTING)
// gl.Disable(gl.LIGHT1)
// render_scene()
// gl.Enable(gl.LIGHT1)
}
})
}
_ = render_stars
for running {
running = glfw.WindowParam(glfw.Opened) == 1
glfw.SwapBuffers()
gl.Clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT | gl.STENCIL_BUFFER_BIT)
rotation := func() {
if tilt {
gl.Rotated(20, 1, 0, 0)
}
if polar {
gl.Rotated(90, 1, 0, 0)
}
gl.Rotated(d, 0, -1, 0)
}
// Star field
glh.With(glh.Matrix{gl.PROJECTION}, func() {
gl.LoadIdentity()
glu.Perspective(starfield_fov, aspect, 0, 1)
glh.With(glh.Matrix{gl.MODELVIEW}, func() {
gl.LoadIdentity()
rotation()
render_stars()
})
})
gl.MatrixMode(gl.MODELVIEW)
gl.LoadIdentity()
gl.Translated(0, 0, camera_z_offset)
rotation()
if rotating {
d += 0.2
}
_ = render_scene
render_scene()
_ = render_shadow_volume
render_shadow_volume()
}
}
func main_loop(data *ProgramData) {
start := time.Now()
frames := 0
lastblocks := 0
// Frame counter
go func() {
for {
time.Sleep(time.Second)
if *verbose {
memstats := new(runtime.MemStats)
runtime.ReadMemStats(memstats)
fps := float64(frames) / time.Since(start).Seconds()
blocks := len(data.blocks)
bps := float64(blocks-lastblocks) / time.Since(start).Seconds()
lastblocks = blocks
log.Printf("fps = %5.2f; blocks = %4d; bps = %5.2f sparemem = %6d MB; alloc'd = %6.6f; (+footprint = %6.6f)",
fps, len(data.blocks), bps, SpareRAM(), float64(memstats.Alloc)/1024/1024,
float64(memstats.Sys-memstats.Alloc)/1024/1024)
PrintTimers(frames)
}
start = time.Now()
frames = 0
}
}()
// Necessary at the moment to prevent eventual OOM
go func() {
for {
time.Sleep(5 * time.Second)
if *verbose {
log.Print("GC()")
}
runtime.GC()
if *verbose {
GCStats()
}
}
}()
var i int64 = -int64(*nback)
// TODO(pwaller): Make this work again
// text := glh.MakeText(data.filename, 32)
// Location of mouse in record space
var rec, rec_actual int64 = 0, 0
var stacktext, dwarftext []*glh.Text
var recordtext *glh.Text = nil
var mousex, mousey, mousedownx, mousedowny int
var mousepx, mousepy float64
var lbutton bool
escape_hit := false
glfw.SetMouseWheelCallback(func(pos int) {
nback_prev := *nback
if pos < 0 {
*nback = 40 * 1024 << uint(-pos)
} else {
*nback = 40 * 1024 >> uint(pos)
}
//log.Print("Mousewheel position: ", pos, " nback: ", *nback)
if rec == 0 {
return
}
// mouse cursor is at screen "rec_actual", and it should be after
// the transformation
// We need to adjust `i` to keep this value constant:
// rec_actual == i + int64(constpart * float64(*nback))
// where constpart <- (-const + 2.) / 4.
// (that way, the mouse is still pointing at the same place after scaling)
constpart := float64(rec_actual-i) / float64(nback_prev)
rec_actual_after := i + int64(constpart*float64(*nback))
delta := rec_actual_after - rec_actual
i -= delta
// Ensure the mouse cursor position doesn't change when zooming
rec = rec_actual - i
})
update_text := func() {
if DoneThisFrame(RenderText) {
return
}
if recordtext != nil {
recordtext.Destroy()
recordtext = nil
}
//r := 0 //data.GetRecord(rec_actual)
//if r != nil {
//log.Print(data.records[rec_actual])
//recordtext = MakeText(r.String(), 32)
//}
for j := range stacktext {
stacktext[j].Destroy()
}
// TODO: Load records on demand
if false {
stack := data.GetStackNames(rec_actual)
stacktext = make([]*glh.Text, len(stack))
for j := range stack {
stacktext[j] = glh.MakeText(stack[j], 32)
}
}
}
glfw.SetMouseButtonCallback(func(button, action int) {
switch button {
case glfw.Mouse1:
switch action {
case glfw.KeyPress:
mousedownx, mousedowny = mousex, mousey
lbutton = true
r := data.GetRecord(rec_actual)
if r != nil {
if r.Type == MEMA_ACCESS {
log.Print(r)
ma := r.MemAccess()
dwarf := data.GetDwarf(ma.Pc)
log.Print("Can has dwarf? ", len(dwarf))
for i := range dwarf {
log.Print(" ", dwarf[i])
//recordtext = MakeText(data.records[rec_actual].String(), 32)
}
log.Print("")
for j := range dwarftext {
dwarftext[j].Destroy()
}
dwarftext = make([]*glh.Text, len(dwarf))
for j := range dwarf {
dwarftext[j] = glh.MakeText(fmt.Sprintf("%q", dwarf[j]), 32)
}
}
//recordtext = MakeText(data.records[rec_actual].String(), 32)
}
case glfw.KeyRelease:
lbutton = false
}
}
})
glfw.SetMousePosCallback(func(x, y int) {
px, py := glh.WindowToProj(x, y)
// Record index
rec = int64((py+2)*float64(*nback)/4. + 0.5)
rec_actual = rec + i
dpy := py - mousepy
di := int64(-dpy * float64(*nback) / 4.)
if lbutton {
i += di
}
mousepx, mousepy = px, py
mousex, mousey = x, y
//log.Printf("Mouse motion: (%3d, %3d), (%f, %f), (%d, %d) dpy=%f di=%d",
//x, y, px, py, rec, rec_actual, dpy, di)
update_text()
})
glfw.SetKeyCallback(func(key, state int) {
switch key {
case glfw.KeyEsc:
escape_hit = true
}
})
draw_mousepoint := func() {
// Draw the mouse point
glh.With(glh.Matrix{gl.MODELVIEW}, func() {
gl.Translated(0, -2, 0)
gl.Scaled(1, 4/float64(*nback), 1)
gl.Translated(0, float64(rec), 0)
gl.PointSize(10)
glh.With(glh.Primitive{gl.POINTS}, func() {
gl.Color4f(1, 1, 1, 1)
gl.Vertex3d(mousepx, 0, 0)
})
})
}
draw_text := func() {
// Draw any text
glh.With(glh.WindowCoords{}, func() {
w, h := glh.GetViewportWHD()
glh.With(glh.Attrib{gl.ENABLE_BIT}, func() {
gl.Enable(gl.TEXTURE_2D)
// text.Draw(0, 0)
for text_idx := range stacktext {
stacktext[text_idx].Draw(int(w*0.55), int(h)-35-text_idx*16)
}
for text_idx := range dwarftext {
dwarftext[text_idx].Draw(int(w*0.55), 35+text_idx*16)
}
if recordtext != nil {
recordtext.Draw(int(w*0.55), 35)
}
})
})
}
Draw = func() {
gl.Clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT)
// Draw the memory access/function data
data.Draw(i, *nback)
draw_mousepoint()
draw_text()
// Visible region quad
// gl.Color4f(1, 1, 1, 0.25)
// DrawQuadd(-2.1, -2.25, 4.4, 2.1 - -2.25)
// StatsHUD()
}
interrupt := make(chan os.Signal)
signal.Notify(interrupt, os.Interrupt)
ctrlc_hit := false
go func() {
<-interrupt
ctrlc_hit = true
}()
done := false
for !done {
done_this_frame = make(map[WorkType]bool)
glh.With(&Timer{Name: "Draw"}, func() {
Draw()
})
glfw.SwapBuffers()
DoMainThreadWork()
done = ctrlc_hit || escape_hit || glfw.WindowParam(glfw.Opened) == 0
frames += 1
}
}
func New(width int, height int, title string) *Window {
var err error
window := &Window{width: width, height: height, title: title}
// initialize logger
logf, err := os.OpenFile("window.log", os.O_WRONLY|os.O_CREATE, 0640)
logger := log.New(logf, "", log.Ldate|log.Ltime)
if err = glfw.Init(); err != nil {
fmt.Fprintf(os.Stderr, "[e] %v\n", err)
return nil
}
// width, hieght, r,g,b,a (color depth bits), depth, stencil, mode
if err = glfw.OpenWindow(window.width, window.height, 8, 8, 8, 0, 0, 0, glfw.Windowed); err != nil {
fmt.Fprintf(os.Stderr, "[e] %v\n", err)
return nil
}
onResize := func(w, h int) {
logger.Printf("resized: %dx%d\n", w, h)
}
onClose := func() int {
logger.Println("window closed\n")
return 1 // return 0 to keep window open.
}
// list callback generators
createBtnList := func(btnNext func() interface{}, device string) func(button, state int) {
btnList := list.New()
btnNext = func() interface{} { return btnList.Remove(btnList.Back()) }
return func(button, state int) {
btnList.PushFront(btnEvent{button: button, state: state})
logger.Printf("%s button: %d, %d\n", device, button, state)
}
}
createPosList := func(posNext func() interface{}, device string) func(x, y int) {
posList := list.New()
posNext = func() interface{} { return posList.Remove(posList.Back()) }
return func(x, y int) {
posList.PushFront(posEvent{x: x, y: y})
logger.Printf("%s pos: %d, %d\n", device, x, y)
}
}
createDeltaList := func(deltaNext func() interface{}, device string) func(delta int) {
deltaList := list.New()
deltaNext = func() interface{} { return deltaList.Remove(deltaList.Back()) }
return func(delta int) {
deltaList.PushFront(deltaEvent{delta: delta})
logger.Printf("%s delta: %d\n", device, delta)
}
}
glfw.SetSwapInterval(1)
glfw.SetWindowTitle(title)
glfw.SetWindowSizeCallback(onResize)
glfw.SetWindowCloseCallback(onClose)
glfw.SetMousePosCallback(createPosList(window.MousePos, "mouse pos"))
glfw.SetMouseButtonCallback(createBtnList(window.MouseBtn, "mouse"))
glfw.SetMouseWheelCallback(createDeltaList(window.MouseWheel, "mouse wheel"))
glfw.SetKeyCallback(createBtnList(window.KeyEvt, "keyboard"))
glfw.SetCharCallback(createBtnList(window.CharEvt, "char"))
window.Start = func() {
defer glfw.Terminate()
defer glfw.CloseWindow()
running := true
for running {
window.Render()
glfw.SwapBuffers()
// Break out of loop when Escape key is pressed, or window is closed.
running = glfw.Key(glfw.KeyEsc) == 0 && glfw.WindowParam(glfw.Opened) == 1
}
}
return window
}
// Specify a function to call when a key is pressed.
func (c *Controller) SetKeyCallback(handler KeyHandler) {
glfw.SetKeyCallback(glfw.KeyHandler(handler))
}