Example #1
0
func reshape(w *glfw.Window, width, height int) {
	gl.Viewport(0, 0, width, height)
	halfW, halfH := float32(width)*0.5, float32(height)*0.5
	Projection = mgl.Ortho2D(-halfW, halfW, -halfH, halfH).Mul4(
		mgl.Translate3D(-halfW, -halfH, 0))

	go func(m mgl.Mat4f) { MVP <- m }(Projection.Mul4(ModelView))
}
Example #2
0
func draw(width, height int) {
	gl.Viewport(0, 0, width, height)
	gl.Clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT)
	gl.BindBuffer(gl.ARRAY_BUFFER, verticesArrayBuffer)
	gl.VertexAttribPointer(attrPos, 4, gl.FLOAT, false, 0, 0)
	gl.BindBuffer(gl.ARRAY_BUFFER, colorsArrayBuffer)
	gl.VertexAttribPointer(attrColor, 4, gl.FLOAT, false, 0, 0)
	gl.DrawArrays(gl.TRIANGLES, 0, 3)
	gl.Flush()
	gl.Finish()
}
Example #3
0
func draw(width, height int) {
	gl.Viewport(0, 0, width, height)
	gl.Clear(gl.COLOR_BUFFER_BIT)
	gl.BindBuffer(gl.ARRAY_BUFFER, verticesArrayBuffer)
	gl.VertexAttribPointer(attrPos, 4, gl.FLOAT, false, 6*4, 0)

	// bind texture - FIX size of vertex

	gl.VertexAttribPointer(attrTexIn, 2, gl.FLOAT, false, 6*4, 4*4)

	gl.ActiveTexture(gl.TEXTURE0)
	gl.BindTexture(gl.TEXTURE_2D, textureBuffer)
	gl.Uniform1i(unifTexture, 0)

	gl.DrawArrays(gl.TRIANGLE_FAN, 0, 4)
	gl.Flush()
	gl.Finish()
}
Example #4
0
func main() {
	flag.Parse()
	glfw.SetErrorCallback(errorCallback)
	if !glfw.Init() {
		println("glfw init failure")
	}
	defer glfw.Terminate()
	glfw.WindowHint(glfw.ClientApi, glfw.OpenglEsApi)
	glfw.WindowHint(glfw.ContextVersionMajor, 2)
	glfw.WindowHint(glfw.ContextVersionMinor, 0)
	window, err := glfw.CreateWindow(Width, Height, Title, nil, nil)
	if err != nil {
		panic(err)
	}
	defer window.Destroy()
	window.MakeContextCurrent()
	glfw.SwapInterval(1)
	window.SetSizeCallback(reshape)
	window.SetKeyCallback(keyEvent)
	gl.Viewport(0, 0, Width, Height)
	initScene()

	if *debug {
		go func() {
			tick := time.Tick(1 * time.Second)
			for {
				<-tick
				fmt.Printf("FPS:%v\tGOROUTINE:%v\r", atomic.LoadUint64(fps), runtime.NumGoroutine())
				atomic.StoreUint64(fps, 0)
			}
		}()
	}
	for !window.ShouldClose() {
		drawScene()
		window.SwapBuffers()
		glfw.PollEvents()
		atomic.AddUint64(fps, 1)
	}
}
Example #5
0
func reshape(width, height int) {
	currWidth, currHeight = width, height
	gl.Viewport(0, 0, width, height)
}