// Creates a new Framebuffer.
func NewFramebuffer(w int, h int) (fb *Framebuffer, err error) {
var (
buffer gl.Framebuffer
texture gl.Texture
)
buffer = gl.GenFramebuffer()
buffer.Bind()
texture = gl.GenTexture()
texture.Bind(gl.TEXTURE_2D)
gl.TexImage2D(gl.TEXTURE_2D, 0, gl.RGBA, w, h, 0, gl.RGBA, gl.UNSIGNED_BYTE, nil)
gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST)
gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST)
gl.FramebufferTexture2D(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.TEXTURE_2D, texture, 0)
gl.DrawBuffer(gl.COLOR_ATTACHMENT0)
if gl.CheckFramebufferStatus(gl.FRAMEBUFFER) != gl.FRAMEBUFFER_COMPLETE {
err = fmt.Errorf("Framebuffer could not be set up")
return
}
fb = &Framebuffer{
Buffer: buffer,
Texture: texture,
Width: w,
Height: h,
}
return
}
func (rm *ResourceManager) loadTile(name string) (*Bitmap, bool) {
fname, _ := filepath.Abs(path.Join("resources", name))
var tex gl.Texture
allegro.RunInThread(func() {
tex = gl.GenTexture()
tex.Bind(gl.TEXTURE_2D)
glfw.LoadTexture2D(fname, 0)
})
bmp := Bitmap{tex, 0, 0, DEFAULT_TILE_WIDTH, DEFAULT_TILE_HEIGHT}
rm.tileBmps[name] = bmp
return &bmp, true
}
func main() {
runtime.LockOSThread()
flag.Parse()
buildPalette()
sdl.Init(sdl.INIT_VIDEO)
defer sdl.Quit()
sdl.GL_SetAttribute(sdl.GL_SWAP_CONTROL, 1)
if sdl.SetVideoMode(512, 512, 32, sdl.OPENGL) == nil {
panic("sdl error")
}
if gl.Init() != 0 {
panic("gl error")
}
sdl.WM_SetCaption("Gomandel", "Gomandel")
gl.Enable(gl.TEXTURE_2D)
gl.Viewport(0, 0, 512, 512)
gl.MatrixMode(gl.PROJECTION)
gl.LoadIdentity()
gl.Ortho(0, 512, 512, 0, -1, 1)
gl.ClearColor(0, 0, 0, 0)
//-----------------------------------------------------------------------------
var dndDragging bool = false
var dndStart Point
var dndEnd Point
var tex gl.Texture
var tc TexCoords
var lastProgress int
initialRect := Rect{-1.5, -1.5, 3, 3}
rect := initialRect
rc := new(MandelbrotRequest)
rc.MakeRequest(512, 512, rect)
rc.WaitFor(Small, &tex, &tc)
running := true
for running {
for e := sdl.PollEvent(); e != nil; e = sdl.PollEvent() {
switch e.(type) {
case *sdl.QuitEvent:
running = false
case *sdl.MouseButtonEvent:
mbe := e.(*sdl.MouseButtonEvent)
if mbe.Type == sdl.MOUSEBUTTONDOWN {
dndDragging = true
sdl.GetMouseState(&dndStart.X, &dndStart.Y)
dndEnd = dndStart
} else {
dndDragging = false
sdl.GetMouseState(&dndEnd.X, &dndEnd.Y)
if mbe.Which == 3 {
rect = initialRect
} else {
rect = rectFromSelection(dndStart, dndEnd, 512, 512, rect)
tc = texCoordsFromSelection(dndStart, dndEnd, 512, 512, tc)
}
// make request
rc.MakeRequest(512, 512, rect)
}
case *sdl.MouseMotionEvent:
if dndDragging {
sdl.GetMouseState(&dndEnd.X, &dndEnd.Y)
}
}
}
// if we're waiting for a result, check if it's ready
p := rc.Update(&tex, &tc)
if p != -1 {
lastProgress = p
}
gl.Clear(gl.COLOR_BUFFER_BIT)
tex.Bind(gl.TEXTURE_2D)
drawQuad(0, 0, 512, 512, tc.TX, tc.TY, tc.TX2, tc.TY2)
tex.Unbind(gl.TEXTURE_2D)
if dndDragging {
drawSelection(dndStart, dndEnd)
}
drawProgress(512, 512, lastProgress, rc.Pending)
sdl.GL_SwapBuffers()
}
}
func main() {
b, _ := ioutil.ReadFile("./roboto/roboto-light.ttf")
font, ferr := tt.Parse(b)
if ferr != nil {
fmt.Println("can't parse font %v , len %v", ferr.Error(), len(b))
}
fc := ft.NewContext()
fc.SetFont(font)
glfw.SetErrorCallback(errorCallback)
if !glfw.Init() {
panic("Can't init glfw!")
}
defer glfw.Terminate()
window, err := glfw.CreateWindow(800, 600, "Testing", nil, nil)
if err != nil {
panic(err)
}
window.MakeContextCurrent()
gl.Init()
program := gl.CreateProgram()
vertexShader := gl.CreateShader(gl.VERTEX_SHADER)
vertexShader.Source(`
attribute vec4 a_position;
attribute vec2 a_coord;
varying vec2 v_coord;
void main() {
gl_Position = a_position;
v_coord = a_coord;
}
`)
vertexShader.Compile()
fmt.Printf("vertex: %v\n", vertexShader.GetInfoLog())
fragmentShader := gl.CreateShader(gl.FRAGMENT_SHADER)
fragmentShader.Source(`
varying vec2 v_coord;
uniform sampler2D s_picture;
uniform vec4 color;
uniform bool has_picture;
void main() {
if(has_picture) {
gl_FragColor = texture2D(s_picture, v_coord);
} else {
gl_FragColor = color;
}
}
`)
fragmentShader.Compile()
fmt.Printf("fragment %v \n", fragmentShader.GetInfoLog())
program.AttachShader(vertexShader)
program.AttachShader(fragmentShader)
program.Link()
// ini
//gl.MatrixMode(gl.PROJECTION)
//gl.Ortho(0, 640, 0, 480, 0, 1)
gl.ClearColor(0.5, 0.5, 0.5, 0.0)
root := widget.Widget{
Name: "Red",
Rect: image.Rect(0, 0, 800, 600),
Background: color.RGBA{255, 128, 128, 126},
OnClick: widget.ClickInner,
OnDrag: widget.DragInner,
OnHover: widget.HoverInner,
OnResize: widget.ResizeItself,
}
blue := root.AddWidget(&widget.Widget{
Name: "Blue",
Rect: image.Rect(100, 100, 200, 200),
Image: LoadImage("./test.png"),
Background: color.RGBA{128, 128, 255, 126},
OnClick: func(w *widget.Widget, p image.Point) {
root.SetTop(w)
fmt.Println("Clicked blue box")
widget.ClickInner(w, p)
},
OnDrag: func(w *widget.Widget, p image.Point, d image.Point) bool {
widget.DragInner(w, p, d)
widget.DragItself(w, p, d)
return true
},
OnResize: widget.ResizeItself,
})
blue.AddWidget(&widget.Widget{
Name: "White",
Rect: image.Rect(90, 90, 100, 100),
Background: color.RGBA{250, 250, 250, 250},
OnDrag: func(w *widget.Widget, p image.Point, d image.Point) bool {
widget.DragItself(w, p, d)
blue.Resize(d)
return true
},
})
root.AddWidget(&widget.Widget{
Name: "Green",
Rect: image.Rect(100, 300, 200, 400),
Background: color.RGBA{128, 255, 128, 126},
OnClick: func(w *widget.Widget, p image.Point) {
root.SetTop(w)
w.Image = LoadImage("./test2.png")
},
OnDrag: widget.DragItself,
})
root.AddWidget(&widget.Widget{
Name: "Black",
Rect: image.Rect(100, 400, 150, 450),
Background: color.RGBA{0, 0, 0, 126},
OnHover: func(w *widget.Widget, p0 image.Point, p1 image.Point) {
if p1.In(w.Rect) {
w.Background = color.RGBA{255, 255, 255, 126}
} else {
w.Background = color.RGBA{0, 0, 0, 126}
}
},
})
white := root.AddWidget(&widget.Widget{
Name: "White",
Text: "Меня зовут Светлана, я из города Иваново. «Единая Россия» очень много сделала достижений: они подняли экономик… экономику, мы стали более лучшие… одеваться, и не было того что щас — это очень большие достижения! В сельском хозяйстве очень хорошо. (Гладин: Что именно в сельском хозяйстве они сделали?) Стало больше… земель за-а… много, ну… я не знаю даже как сказать… засеивать больше земель… а-а-а вот, овощи там, рожь — вот это всё. Что еще сказать… Так как у нас страна многонациональная, у нас в Москве очень много людей, которые очень помогают нам… с других городов… (вопрос Гладина: Вы считаете это достижение «Единой России»?) Да, это большое достижение! Очень хорошее даже! Видите ну… да… Видите ну у нас в Иванове очень хорошая стала медицина… а…что ещё… благоустройство в городах хорошее… с жильём… никаких проблем. Люди подмогают очень хорошо",
Rect: image.Rect(400, 200, 700, 500),
Foreground: color.RGBA{0, 0, 0, 0},
Background: color.RGBA{255, 255, 255, 126},
OnDrag: func(w *widget.Widget, p image.Point, d image.Point) bool {
root.SetTop(w)
widget.DragInner(w, p, d)
widget.DragItself(w, p, d)
return true
},
OnResize: widget.ResizeItself,
Padding: image.Rect(20, 20, 20, 20),
})
white.AddWidget(&widget.Widget{
Name: "White",
Rect: image.Rect(290, 290, 300, 300),
Background: color.RGBA{0, 0, 0, 250},
OnDrag: func(w *widget.Widget, p image.Point, d image.Point) bool {
widget.DragItself(w, p, d)
white.Resize(d)
return true
},
})
x0 := 0.0
y0 := 0.0
window.SetMouseButtonCallback(func(w *glfw.Window, but glfw.MouseButton, act glfw.Action, key glfw.ModifierKey) {
xpos, ypos := w.GetCursorPosition()
if act == glfw.Press {
root.Click(image.Point{X: int(xpos), Y: int(ypos)})
x0, y0 = xpos, ypos
}
})
window.SetCursorPositionCallback(func(w *glfw.Window, xpos float64, ypos float64) {
root.Hover(image.Point{X: int(x0), Y: int(y0)}, image.Point{X: int(xpos), Y: int(ypos)})
if w.GetMouseButton(glfw.MouseButtonLeft) == glfw.Press {
root.Drag(image.Point{X: int(x0), Y: int(y0)}, image.Point{X: int(xpos - x0), Y: int(ypos - y0)})
x0, y0 = xpos, ypos
}
x0, y0 = xpos, ypos
})
width0, height0 := window.GetSize()
window.SetSizeCallback(func(w *glfw.Window, width int, height int) {
gl.Viewport(0, 0, width, height)
root.Rect.Max = image.Point{width, height}
width0, height0 = width, height
})
/*switch(color_type){
case PNG_COLOR_TYPE_GRAY:
return GL_LUMINANCE;
case PNG_COLOR_TYPE_GRAY_ALPHA:
return GL_LUMINANCE_ALPHA;
case PNG_COLOR_TYPE_RGB:
return GL_RGB;
case PNG_COLOR_TYPE_RGB_ALPHA:
return GL_RGBA;
*/
/*
here init texture pool
texturePool := make([widget.Widget]texture)
*/
for !window.ShouldClose() {
//Do OpenGL stuff
program.Use()
gl.Clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT)
root.DrawBy(image.Point{}, func(w *widget.Widget, corner image.Point) {
var texture gl.Texture
if w.Image != nil {
texture = gl.GenTexture()
texture.Bind(gl.TEXTURE_2D)
gl.ActiveTexture(gl.TEXTURE0)
gl.TexImage2D(gl.TEXTURE_2D, 0, gl.RGBA,
w.Image.Rect.Dx(), w.Image.Rect.Dy(),
0, gl.RGBA, gl.UNSIGNED_BYTE, w.Image.Pix)
}
leftX := 2.0*float32(corner.X+w.Rect.Min.X)/float32(root.Rect.Dx()) - 1.0
leftY := 1.0 - 2.0*float32(corner.Y+w.Rect.Min.Y)/float32(root.Rect.Dy())
rightX := 2.0*float32(corner.X+w.Rect.Min.X)/float32(root.Rect.Dx()) - 1.0
rightY := 1.0 - 2.0*float32(corner.Y+w.Rect.Max.Y)/float32(root.Rect.Dy())
bottomX := 2.0*float32(corner.X+w.Rect.Max.X)/float32(root.Rect.Dx()) - 1.0
bottomY := 1.0 - 2.0*float32(corner.Y+w.Rect.Min.Y)/float32(root.Rect.Dy())
topX := 2.0*float32(corner.X+w.Rect.Max.X)/float32(root.Rect.Dx()) - 1.0
topY := 1.0 - 2.0*float32(corner.Y+w.Rect.Max.Y)/float32(root.Rect.Dy())
vertices := []float32{
leftX, leftY,
rightX, rightY,
bottomX, bottomY,
topX, topY,
}
texturePoints := []float32{
0.0, 0.0, 0.0, 1.0,
1.0, 0.0, 1.0, 1.0,
}
s_picture := program.GetUniformLocation("s_picture")
s_picture.Uniform1i(0)
has_picture := program.GetUniformLocation("has_picture")
if w.Image != nil {
has_picture.Uniform1i(1)
} else {
has_picture.Uniform1i(0)
}
col := program.GetUniformLocation("color")
r, g, b, a := w.Background.RGBA()
col.Uniform4f(float32(r)/float32(0xFFFF), float32(g)/float32(0xFFFF), float32(b)/float32(0xFFFF), float32(a)/float32(0xFFFF))
gl.PixelStorei(gl.UNPACK_ALIGNMENT, gl.UNSIGNED_BYTE)
gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST)
a_position := program.GetAttribLocation("a_position")
a_position.AttribPointer(2, gl.FLOAT, false, 0, vertices)
a_position.EnableArray()
a_coord := program.GetAttribLocation("a_coord")
a_coord.AttribPointer(2, gl.FLOAT, false, 0, texturePoints)
a_coord.EnableArray()
gl.DrawArrays(gl.TRIANGLE_STRIP, 0, 4)
gl.Flush()
texture.Delete()
if len(w.Text) > 0 {
rct := w.Rect
rct.Max = rct.Max.Sub(w.Rect.Min)
rct.Min = rct.Min.Sub(w.Rect.Min)
fg := image.NewRGBA(rct)
fgu := image.NewUniform(color.RGBA{0, 16, 32, 255})
draw.Draw(fg, fg.Bounds(), fgu, image.ZP, draw.Src)
bg := image.NewRGBA(rct)
bgu := image.NewUniform(color.RGBA{255, 255, 255, 255})
draw.Draw(bg, bg.Bounds(), bgu, image.ZP, draw.Src)
lineHeight := 20.0
fc.SetDPI(100.0)
fc.SetFont(font)
fc.SetFontSize(12.0)
fc.SetClip(bg.Bounds())
fc.SetDst(bg)
fc.SetSrc(fg)
p0 := ft.Pt(w.Padding.Min.X, w.Padding.Min.Y)
p := p0
for _, s := range w.Text {
p, _ = fc.DrawString(string(s), p)
if int(p.X>>8) > rct.Max.X-w.Padding.Max.X-w.Padding.Min.X {
p.X = p0.X
p.Y += raster.Fix32(lineHeight * 256)
}
}
var texture gl.Texture
if bg != nil {
texture = gl.GenTexture()
texture.Bind(gl.TEXTURE_2D)
gl.ActiveTexture(gl.TEXTURE0)
gl.TexImage2D(gl.TEXTURE_2D, 0, gl.RGBA,
bg.Rect.Dx(), bg.Rect.Dy(),
0, gl.RGBA, gl.UNSIGNED_BYTE, bg.Pix)
}
leftX := 2.0*float32(corner.X+w.Rect.Min.X)/float32(root.Rect.Dx()) - 1.0
leftY := 1.0 - 2.0*float32(corner.Y+w.Rect.Min.Y)/float32(root.Rect.Dy())
rightX := 2.0*float32(corner.X+w.Rect.Min.X)/float32(root.Rect.Dx()) - 1.0
rightY := 1.0 - 2.0*float32(corner.Y+w.Rect.Max.Y)/float32(root.Rect.Dy())
bottomX := 2.0*float32(corner.X+w.Rect.Max.X)/float32(root.Rect.Dx()) - 1.0
bottomY := 1.0 - 2.0*float32(corner.Y+w.Rect.Min.Y)/float32(root.Rect.Dy())
topX := 2.0*float32(corner.X+w.Rect.Max.X)/float32(root.Rect.Dx()) - 1.0
topY := 1.0 - 2.0*float32(corner.Y+w.Rect.Max.Y)/float32(root.Rect.Dy())
vertices := []float32{
leftX, leftY,
rightX, rightY,
bottomX, bottomY,
topX, topY,
}
texturePoints := []float32{
0.0, 0.0, 0.0, 1.0,
1.0, 0.0, 1.0, 1.0,
}
s_picture := program.GetUniformLocation("s_picture")
s_picture.Uniform1i(0)
has_picture := program.GetUniformLocation("has_picture")
if bg != nil {
has_picture.Uniform1i(1)
} else {
has_picture.Uniform1i(0)
}
col := program.GetUniformLocation("color")
r, g, b, a := w.Background.RGBA()
col.Uniform4f(float32(r)/float32(0xFFFF), float32(g)/float32(0xFFFF), float32(b)/float32(0xFFFF), float32(a)/float32(0xFFFF))
gl.PixelStorei(gl.UNPACK_ALIGNMENT, gl.UNSIGNED_BYTE)
gl.TexParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST)
a_position := program.GetAttribLocation("a_position")
a_position.AttribPointer(2, gl.FLOAT, false, 0, vertices)
a_position.EnableArray()
a_coord := program.GetAttribLocation("a_coord")
a_coord.AttribPointer(2, gl.FLOAT, false, 0, texturePoints)
a_coord.EnableArray()
gl.DrawArrays(gl.TRIANGLE_STRIP, 0, 4)
gl.Flush()
texture.Delete()
}
})
window.SwapBuffers()
glfw.PollEvents()
}
}