// RenderLinesWithEvents renders multiple channels of samples to screen, and draws events.
func (s *Screen) RenderLinesWithEvents(lines []Line, events <-chan interface{}, sampleRate int) {
s.lines = lines
runtime.LockOSThread()
// NOTE: It appears that glfw 3.1 uses its own internal error callback.
// glfw.SetErrorCallback(func(err glfw.ErrorCode, desc string) {
// log.Fatalf("%v: %s\n", err, desc)
// })
if err := glfw.Init(); err != nil {
log.Fatalf("Can't init glfw: %v!", err)
}
defer glfw.Terminate()
window, err := glfw.CreateWindow(s.width, s.height, "Muse", nil, nil)
if err != nil {
log.Fatalf("CreateWindow failed: %s", err)
}
if aw, ah := window.GetSize(); aw != s.width || ah != s.height {
log.Fatalf("Window doesn't have the requested size: want %d,%d got %d,%d", s.width, s.height, aw, ah)
}
window.MakeContextCurrent()
// Must gl.Init() *after* MakeContextCurrent
if err := gl.Init(); err != nil {
log.Fatalf("Can't init gl: %v!", err)
}
// Set window up to be [0, -1.0] -> [width, 1.0], black.
gl.MatrixMode(gl.MODELVIEW)
gl.LoadIdentity()
gl.Translated(-1, 0, 0)
gl.Scaled(2/float64(s.width), 1.0, 1.0)
gl.ClearColor(0.0, 0.0, 0.0, 0.0)
// Actually start writing data to the buffer
for i, _ := range s.lines {
s.lines[i].valueBuffer = types.NewBuffer(int(float64(s.width) / s.pixelsPerSample))
s.lines[i].valueBuffer.GoPushChannel(s.lines[i].Values, sampleRate)
}
if events != nil {
s.eventBuffer.GoPushChannel(events, sampleRate)
}
// Keep drawing while we still can (and should).
for !window.ShouldClose() && !s.bufferFinished() {
if window.GetKey(glfw.KeyEscape) == glfw.Press {
break
}
gl.Clear(gl.COLOR_BUFFER_BIT)
s.drawSignal()
window.SwapBuffers()
glfw.PollEvents()
}
// Keep window around, only close on esc.
for !window.ShouldClose() && window.GetKey(glfw.KeyEscape) != glfw.Press {
glfw.PollEvents()
}
}
func main() {
flag.Parse()
if *filename == "REQUIRED" {
print("You must include a filename to load. See --help.\n")
os.Exit(-2)
}
runtime.LockOSThread()
if err := glfw.Init(); err != nil {
log.Fatalln("failed to initialize glfw:", err)
}
defer glfw.Terminate()
glfw.WindowHint(glfw.Resizable, glfw.False)
glfw.WindowHint(glfw.ContextVersionMajor, 2)
glfw.WindowHint(glfw.ContextVersionMinor, 1)
window, err := glfw.CreateWindow(640, 320, "chip8", nil, nil)
if err != nil {
panic(err)
}
window.MakeContextCurrent()
if err := gl.Init(); err != nil {
panic(err)
}
gl.ClearColor(0, 0, 0, 0)
gl.MatrixMode(gl.PROJECTION)
gl.Ortho(0, 64, 32, 0, 0, 1)
myChip8.initialize()
myChip8.loadGame(*filename)
for !window.ShouldClose() {
myChip8.emulateCycle(window)
if(myChip8.drawFlag) {
myChip8.drawGraphics()
window.SwapBuffers()
time.Sleep(0 * time.Millisecond)
}
glfw.PollEvents()
myChip8.setKeys(window);
}
}
func (c *chip8) drawGraphics() {
gl.MatrixMode(gl.POLYGON)
for y := 0; y < 32; y++ {
for x := 0; x < 64; x++ {
if c.gfx[(y * 64) + x] == 1 {
gl.Color3f(1,1,1)
} else {
gl.Color3f(0,0,0)
}
gl.Rectf(float32(x), float32(y), float32(x+1), float32(y+1))
}
}
c.drawFlag = false
}