Exemple #1
0
func main() {
	app.Main(func(a app.App) {
		addr := "127.0.0.1:" + apptest.Port
		log.Printf("addr: %s", addr)

		conn, err := net.Dial("tcp", addr)
		if err != nil {
			log.Fatal(err)
		}
		defer conn.Close()
		log.Printf("dialled")
		comm := &apptest.Comm{
			Conn:   conn,
			Fatalf: log.Panicf,
			Printf: log.Printf,
		}

		comm.Send("hello_from_testapp")
		comm.Recv("hello_from_host")

		color := "red"
		sendPainting := false
		for e := range a.Events() {
			switch e := app.Filter(e).(type) {
			case lifecycle.Event:
				switch e.Crosses(lifecycle.StageVisible) {
				case lifecycle.CrossOn:
					comm.Send("lifecycle_visible")
					sendPainting = true
				case lifecycle.CrossOff:
					comm.Send("lifecycle_not_visible")
				}
			case size.Event:
				comm.Send("size", e.PixelsPerPt, e.Orientation)
			case paint.Event:
				if color == "red" {
					gl.ClearColor(1, 0, 0, 1)
				} else {
					gl.ClearColor(0, 1, 0, 1)
				}
				gl.Clear(gl.COLOR_BUFFER_BIT)
				a.EndPaint(e)
				if sendPainting {
					comm.Send("paint", color)
					sendPainting = false
				}
			case touch.Event:
				comm.Send("touch", e.Type, e.X, e.Y)
				if e.Type == touch.TypeEnd {
					if color == "red" {
						color = "green"
					} else {
						color = "red"
					}
					sendPainting = true
				}
			}
		}
	})
}
Exemple #2
0
func onPaint() {
	if scene == nil {
		loadScene()
	}
	gl.ClearColor(1, 1, 1, 1)
	gl.Clear(gl.COLOR_BUFFER_BIT)
	now := clock.Time(time.Since(startTime) * 60 / time.Second)
	eng.Render(scene, now, sz)
	debug.DrawFPS(sz)
}
Exemple #3
0
func onDraw(sz size.Event) {
	select {
	case <-determined:
		if ok {
			gl.ClearColor(0, 1, 0, 1)
		} else {
			gl.ClearColor(1, 0, 0, 1)
		}
	default:
		gl.ClearColor(0, 0, 0, 1)
	}
	gl.Clear(gl.COLOR_BUFFER_BIT)

	debug.DrawFPS(sz)
}
Exemple #4
0
func onPaint(sz size.Event) {
	gl.ClearColor(1, 0, 0, 1)
	gl.Clear(gl.COLOR_BUFFER_BIT)

	gl.UseProgram(program)

	green += 0.01
	if green > 1 {
		green = 0
	}
	gl.Uniform4f(color, 0, green, 0, 1)

	gl.Uniform2f(offset, touchX/float32(sz.WidthPx), touchY/float32(sz.HeightPx))

	gl.BindBuffer(gl.ARRAY_BUFFER, buf)
	gl.EnableVertexAttribArray(position)
	gl.VertexAttribPointer(position, coordsPerVertex, gl.FLOAT, false, 0, 0)
	gl.DrawArrays(gl.TRIANGLES, 0, vertexCount)
	gl.DisableVertexAttribArray(position)

	debug.DrawFPS(sz)
}
Exemple #5
0
func TestImage(t *testing.T) {
	done := make(chan error)
	defer close(done)
	go func() {
		runtime.LockOSThread()
		ctx, err := createContext()
		done <- err
		for {
			select {
			case <-gl.WorkAvailable:
				gl.DoWork()
			case <-done:
				ctx.destroy()
				return
			}
		}
	}()
	if err := <-done; err != nil {
		t.Fatalf("cannot create GL context: %v", err)
	}

	start()
	defer stop()

	// GL testing strategy:
	// 	1. Create an offscreen framebuffer object.
	// 	2. Configure framebuffer to render to a GL texture.
	//	3. Run test code: use glimage to draw testdata.
	//	4. Copy GL texture back into system memory.
	//	5. Compare to a pre-computed image.

	f, err := os.Open("../../../testdata/testpattern.png")
	if err != nil {
		t.Fatal(err)
	}
	defer f.Close()
	src, _, err := image.Decode(f)
	if err != nil {
		t.Fatal(err)
	}

	const (
		pixW = 100
		pixH = 100
		ptW  = geom.Pt(50)
		ptH  = geom.Pt(50)
	)
	sz := size.Event{
		WidthPx:     pixW,
		HeightPx:    pixH,
		WidthPt:     ptW,
		HeightPt:    ptH,
		PixelsPerPt: float32(pixW) / float32(ptW),
	}

	fBuf := gl.CreateFramebuffer()
	gl.BindFramebuffer(gl.FRAMEBUFFER, fBuf)
	colorBuf := gl.CreateRenderbuffer()
	gl.BindRenderbuffer(gl.RENDERBUFFER, colorBuf)
	// https://www.khronos.org/opengles/sdk/docs/man/xhtml/glRenderbufferStorage.xml
	// says that the internalFormat "must be one of the following symbolic constants:
	// GL_RGBA4, GL_RGB565, GL_RGB5_A1, GL_DEPTH_COMPONENT16, or GL_STENCIL_INDEX8".
	gl.RenderbufferStorage(gl.RENDERBUFFER, gl.RGB565, pixW, pixH)
	gl.FramebufferRenderbuffer(gl.FRAMEBUFFER, gl.COLOR_ATTACHMENT0, gl.RENDERBUFFER, colorBuf)

	if status := gl.CheckFramebufferStatus(gl.FRAMEBUFFER); status != gl.FRAMEBUFFER_COMPLETE {
		t.Fatalf("framebuffer create failed: %v", status)
	}

	allocs := testing.AllocsPerRun(100, func() {
		gl.ClearColor(0, 0, 1, 1) // blue
	})
	if allocs != 0 {
		t.Errorf("unexpected allocations from calling gl.ClearColor: %f", allocs)
	}
	gl.Clear(gl.COLOR_BUFFER_BIT)
	gl.Viewport(0, 0, pixW, pixH)

	m := NewImage(src.Bounds().Dx(), src.Bounds().Dy())
	b := m.RGBA.Bounds()
	draw.Draw(m.RGBA, b, src, src.Bounds().Min, draw.Src)
	m.Upload()
	b.Min.X += 10
	b.Max.Y /= 2

	// All-integer right-angled triangles offsetting the
	// box: 24-32-40, 12-16-20.
	ptTopLeft := geom.Point{0, 24}
	ptTopRight := geom.Point{32, 0}
	ptBottomLeft := geom.Point{12, 24 + 16}
	ptBottomRight := geom.Point{12 + 32, 16}
	m.Draw(sz, ptTopLeft, ptTopRight, ptBottomLeft, b)

	// For unknown reasons, a windowless OpenGL context renders upside-
	// down. That is, a quad covering the initial viewport spans:
	//
	//	(-1, -1) ( 1, -1)
	//	(-1,  1) ( 1,  1)
	//
	// To avoid modifying live code for tests, we flip the rows
	// recovered from the renderbuffer. We are not the first:
	//
	// http://lists.apple.com/archives/mac-opengl/2010/Jun/msg00080.html
	got := image.NewRGBA(image.Rect(0, 0, pixW, pixH))
	upsideDownPix := make([]byte, len(got.Pix))
	gl.ReadPixels(upsideDownPix, 0, 0, pixW, pixH, gl.RGBA, gl.UNSIGNED_BYTE)
	for y := 0; y < pixH; y++ {
		i0 := (pixH - 1 - y) * got.Stride
		i1 := i0 + pixW*4
		copy(got.Pix[y*got.Stride:], upsideDownPix[i0:i1])
	}

	drawCross(got, 0, 0)
	drawCross(got, int(ptTopLeft.X.Px(sz.PixelsPerPt)), int(ptTopLeft.Y.Px(sz.PixelsPerPt)))
	drawCross(got, int(ptBottomRight.X.Px(sz.PixelsPerPt)), int(ptBottomRight.Y.Px(sz.PixelsPerPt)))
	drawCross(got, pixW-1, pixH-1)

	const wantPath = "../../../testdata/testpattern-window.png"
	f, err = os.Open(wantPath)
	if err != nil {
		t.Fatal(err)
	}
	defer f.Close()
	wantSrc, _, err := image.Decode(f)
	if err != nil {
		t.Fatal(err)
	}
	want, ok := wantSrc.(*image.RGBA)
	if !ok {
		b := wantSrc.Bounds()
		want = image.NewRGBA(b)
		draw.Draw(want, b, wantSrc, b.Min, draw.Src)
	}

	if !imageEq(got, want) {
		// Write out the image we got.
		f, err = ioutil.TempFile("", "testpattern-window-got")
		if err != nil {
			t.Fatal(err)
		}
		f.Close()
		gotPath := f.Name() + ".png"
		f, err = os.Create(gotPath)
		if err != nil {
			t.Fatal(err)
		}
		if err := png.Encode(f, got); err != nil {
			t.Fatal(err)
		}
		if err := f.Close(); err != nil {
			t.Fatal(err)
		}
		t.Errorf("got\n%s\nwant\n%s", gotPath, wantPath)
	}
}