snapshot - not working yet (9986b87f) · Commits · bsmrgo / graphics-playground

scenes/icosahedron/icosahedron.go

+87 −1

Original line number	Diff line number	Diff line
		@@ -9,6 +9,7 @@ import (
		"repositories.muehmer.net/bsmrgo/saola/support/scene"

		gi "repositories.muehmer.net/bsmrgo/geometry/icosahedron"
		shader "repositories.muehmer.net/bsmrgo/saola/support/shader"
		)

		const (
		@@ -29,10 +30,43 @@ func Hooks() scene.HooksType {
		return hooks
		}

		// VAO_IDs
		const (
		Trianges = iota
		NumVAOs
		)

		// Buffer_IDs
		const (
		ArrayBuffer = iota
		NumBuffers
		)

		// Attrib_IDs
		const (
		vPosition = 0
		NumVertices = 6
		)

		// Buffers
		var (
		//VAOs [NumVAOs]uint32
		//Buffers [NumBuffers]uint32
		VAOs []uint32
		Buffers []uint32
		)

		func init() {
		VAOs = make([]uint32, NumVAOs)
		Buffers = make([]uint32, NumBuffers)
		}

		// Initialize the environment.
		func initialize() {
		fmt.Fprintf(os.Stderr, "[%s] Initialize()\n", sceneName)

		var err error

		ico, err := gi.Create()
		if err != nil {
		panic(err)
		@@ -44,6 +78,49 @@ func initialize() {
		for i, icoFace := range ico.Faces() {
		fmt.Printf("f[%d] = %v\n", i, icoFace)
		}

		pvaos := &VAOs[0]
		gl.GenVertexArrays(NumVAOs, pvaos)
		gl.BindVertexArray(VAOs[Trianges])

		vertices := [NumVertices][2]float32{
		{-0.90, -0.90},
		{0.85, -0.90},
		{-0.90, 0.85},
		{0.90, -0.85},
		{0.90, 0.90},
		{-0.85, 0.90},
		}

		abp := &Buffers[ArrayBuffer]
		gl.GenBuffers(NumBuffers, abp)
		gl.BindBuffer(gl.ARRAY_BUFFER, Buffers[ArrayBuffer])
		vp := &vertices[0][0]
		gl.BufferData(gl.ARRAY_BUFFER, len(vertices), gl.Ptr(vp), gl.STATIC_DRAW)

		//gl.CreateBuffers(NumBuffers, (*uint32)(gl.Ptr(&Buffers[0])))
		//gl.CreateBuffers(NumBuffers, (*uint32)(gl.Ptr(&Buffers[ArrayBuffer])))
		//abp := &Buffers[ArrayBuffer]
		//gl.CreateBuffers(NumBuffers, abp)
		//gl.NamedBufferStorage(Buffers[ArrayBuffer], len(vertices), gl.Ptr(&vertices[0][0]), 0)
		//vp := &vertices[0][0]
		//gl.NamedBufferStorage(Buffers[ArrayBuffer], len(vertices), gl.Ptr(vp), 0)
		//gl.NamedBufferStorage(Buffers[ArrayBuffer], len(vertices), vp, 0)

		// load shaders
		basepath := "/home/MUEHMER/bsmr/go/src/repositories.muehmer.net/bsmrgo/graphics-playground/scenes/icosahedron/shaders/"
		fis := shader.FileInfos{
		{Type: gl.VERTEX_SHADER, Filename: basepath + "vertex.glsl"},
		{Type: gl.FRAGMENT_SHADER, Filename: basepath + "fragment.glsl"},
		}
		program, err := shader.LoadShadersFromFile(fis)
		if err != nil {
		panic(err)
		}
		gl.UseProgram(program)

		gl.VertexAttribPointer(vPosition, 2, gl.FLOAT, false, 0, gl.PtrOffset(0))
		gl.EnableVertexAttribArray(vPosition)
		}

		// Resize changes the view.
		@@ -51,9 +128,18 @@ func resize(width, height int) {
		fmt.Fprintf(os.Stderr, "[%s] Resize(%d, %d)\n", sceneName, width, height)
		}

		var (
		black = []float32{0.0, 0.0, 0.0, 0.0}
		)

		// Render something.
		func render() {
		gl.Clear(gl.COLOR_BUFFER_BIT)
		//gl.Clear(gl.COLOR_BUFFER_BIT)
		//gl.ClearBufferfv(gl.COLOR, 0, (*float32)(gl.Ptr(&black[0])))
		bp := &black[0]
		gl.ClearBufferfv(gl.COLOR, 0, bp)
		gl.BindVertexArray(VAOs[Trianges])
		gl.DrawArrays(gl.TRIANGLES, 0, NumVertices)
		}

		func keyCallback(w *glfw.Window, key glfw.Key, scancode int, action glfw.Action, mods glfw.ModifierKey) {

scenes/icosahedron/shaders/fragment.glsl

0 → 100644

+8 −0

Original line number	Diff line number	Diff line
		#version 430 core

		out vec4 fColor;

		void main()
		{
		fColor = vec4(0.0, 0.0, 1.0, 1.0);
		}

scenes/icosahedron/shaders/vertex.glsl

0 → 100644

+8 −0

Original line number	Diff line number	Diff line
		#version 430 core

		layout (location = 0) in vec4 vPosition;

		void main()
		{
		gl_Position = vPosition;
		}