//
// print OpenGl Version Info
// Prints the OpenGL Version to the Console
//
func printOpenGlVersionInfo() {
	version := gl.GoStr(gl.GetString(gl.VERSION))
	renderer := gl.GoStr(gl.GetString(gl.RENDERER))
	shaderVersion := gl.GoStr(gl.GetString(gl.SHADING_LANGUAGE_VERSION))
	fmt.Println("OpenGL version", version)
	fmt.Println("OpenGL renderer", renderer)
	fmt.Println("Max supported shader language version", shaderVersion)
}
Example #2
0
File: gl.go Project: gmacd/rt
func (glr *GlRenderer) initSystem() {
	// Lock goroutine to main thread - required for GL
	runtime.LockOSThread()

	var err error
	if err = glfw.Init(); err != nil {
		panic(err)
	}

	glfw.WindowHint(glfw.Resizable, glfw.False)
	glfw.WindowHint(glfw.ContextVersionMajor, 3)
	glfw.WindowHint(glfw.ContextVersionMinor, 3)
	glfw.WindowHint(glfw.OpenGLProfile, glfw.OpenGLCoreProfile)
	glfw.WindowHint(glfw.OpenGLForwardCompatible, glfw.True)
	glr.window, err = glfw.CreateWindow(glr.width, glr.height, "rt", nil, nil)
	if err != nil {
		panic(err)
	}
	glr.window.MakeContextCurrent()

	if err = gl.Init(); err != nil {
		panic(err)
	}

	version := gl.GoStr(gl.GetString(gl.VERSION))
	fmt.Println("OpenGL version", version)
}
Example #3
0
func CreateRenderer(windowWidth, windowHeight int) *Renderer {

	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, 4)
	glfw.WindowHint(glfw.ContextVersionMinor, 1)
	glfw.WindowHint(glfw.OpenGLProfile, glfw.OpenGLCoreProfile)
	glfw.WindowHint(glfw.OpenGLForwardCompatible, glfw.True)
	if windowWidth == 0 && windowHeight == 0 {
		windowWidth, windowHeight = glfw.GetPrimaryMonitor().GetPhysicalSize()
	}
	fmt.Println("Window Width -", windowWidth, "Window Height -", windowHeight)
	window, err := glfw.CreateWindow(windowWidth, windowHeight, "Karma", glfw.GetPrimaryMonitor(), nil)
	if err != nil {
		panic(err)
	}
	window.MakeContextCurrent()
	window.SetKeyCallback(testCallback)

	// Initialize Glow
	if err := gl.Init(); err != nil {
		panic(err)
	}

	version := gl.GoStr(gl.GetString(gl.VERSION))
	fmt.Println("OpenGL version", version)

	shaders := Shaders{}

	textureFlatUniforms := []string{"projection", "camera", "modelView", "tex"}
	textureFlatAttributes := []string{"vert", "vertTexCoord"}

	fmt.Println(textureFlatUniforms)
	fmt.Println(textureFlatAttributes)

	shader, err := createProgram("./assets/shaders/texture_flat.vs", "./assets/shaders/texture_flat.fs", textureFlatUniforms, textureFlatAttributes)
	if err != nil {
		panic(err)
	}
	shaders.textureFlat = shader

	meshes := []*Mesh{}

	previousTime := glfw.GetTime()

	return &Renderer{
		PreviousTime: previousTime,
		Window:       window,
		Shaders:      &shaders,
		Meshes:       meshes,
	}
}