public void Init()
{
if (IsInitialized)
{
//throw new Exception("Mesh is already initialized");
//Console.WriteLine("skipping Mesh init() because it was already initialized");
return;
}
vao = new Vertexarray();
vbo = new Buffer <vertex>();
vbo.bufferdata(vertices.ToArray(), OpenTK.Graphics.OpenGL4.BufferUsageHint.StaticDraw);
ebo = new Buffer <uint>();
ebo.bufferdata(indices.ToArray(), OpenTK.Graphics.OpenGL4.BufferUsageHint.StaticDraw);
vao.set_buffer(OpenTK.Graphics.OpenGL4.BufferTarget.ArrayBuffer, vbo);
vao.set_buffer(OpenTK.Graphics.OpenGL4.BufferTarget.ElementArrayBuffer, ebo);
/*
* vao.attrib_pointer(0, 3, OpenTK.Graphics.OpenGL4.VertexAttribPointerType.Float, false, sizeof(float) * 8, 0);
* vao.attrib_pointer(1, 2, OpenTK.Graphics.OpenGL4.VertexAttribPointerType.Float, false, sizeof(float) * 8, sizeof(float) * 3);
* vao.attrib_pointer(2, 3, OpenTK.Graphics.OpenGL4.VertexAttribPointerType.Float, false, sizeof(float) * 8, sizeof(float) * 5);
*/
const int stride = sizeof(float) * 8;
vao.attrib_pointer(0, AttribType.Vec3, stride, 0);
vao.attrib_pointer(1, AttribType.Vec2, stride, sizeof(float) * 3);
vao.attrib_pointer(2, AttribType.Vec3, stride, sizeof(float) * 5);
}
static Graphics()
{
vbo = new Buffer <float>();
vbo.bufferdata(new float[] {
-.5f, -.5f, 1, 0,
-.5f, .5f, 0, 0,
.5f, -.5f, 1, 1,
.5f, .5f, 0, 1
}, OpenTK.Graphics.OpenGL4.BufferUsageHint.StaticDraw);
ebo = new Buffer <uint>();
ebo.bufferdata(new uint[] {
0, 2, 1,
3, 1, 2
}, OpenTK.Graphics.OpenGL4.BufferUsageHint.StaticDraw);
vao = new Vertexarray();
vao.set_buffer(OpenTK.Graphics.OpenGL4.BufferTarget.ArrayBuffer, vbo);
vao.set_buffer(OpenTK.Graphics.OpenGL4.BufferTarget.ElementArrayBuffer, ebo);
vao.attrib_pointer(0, 4, OpenTK.Graphics.OpenGL4.VertexAttribPointerType.Float, false, sizeof(float) * 4, 0);
}
public Vao_vbo_ebo()
{
vao = new Vertexarray();
vbo = new Buffer <T>();
ebo = new Buffer <uint>();
vao.set_buffer(OpenTK.Graphics.OpenGL4.BufferTarget.ArrayBuffer, vbo);
vao.set_buffer(OpenTK.Graphics.OpenGL4.BufferTarget.ElementArrayBuffer, ebo);
}
public void render()
{
vao.bind();
int offset = 0;
foreach (var item in entries)
{
item.Key.apply();
Vertexarray.draw_elements(OpenTK.Graphics.OpenGL4.PrimitiveType.Triangles, item.Value, ElementsType.UnsignedInt, offset * sizeof(uint));
offset += item.Value;
}
Vertexarray.unbind();
}
static Skybox()
{
boxvao = new Vertexarray();
vbo = Glow.Buffer.create(new float[] {
-1.0f, 1.0f, -1.0f,
-1.0f, -1.0f, -1.0f,
1.0f, -1.0f, -1.0f,
1.0f, -1.0f, -1.0f,
1.0f, 1.0f, -1.0f,
-1.0f, 1.0f, -1.0f,
-1.0f, -1.0f, 1.0f,
-1.0f, -1.0f, -1.0f,
-1.0f, 1.0f, -1.0f,
-1.0f, 1.0f, -1.0f,
-1.0f, 1.0f, 1.0f,
-1.0f, -1.0f, 1.0f,
1.0f, -1.0f, -1.0f,
1.0f, -1.0f, 1.0f,
1.0f, 1.0f, 1.0f,
1.0f, 1.0f, 1.0f,
1.0f, 1.0f, -1.0f,
1.0f, -1.0f, -1.0f,
-1.0f, -1.0f, 1.0f,
-1.0f, 1.0f, 1.0f,
1.0f, 1.0f, 1.0f,
1.0f, 1.0f, 1.0f,
1.0f, -1.0f, 1.0f,
-1.0f, -1.0f, 1.0f,
-1.0f, 1.0f, -1.0f,
1.0f, 1.0f, -1.0f,
1.0f, 1.0f, 1.0f,
1.0f, 1.0f, 1.0f,
-1.0f, 1.0f, 1.0f,
-1.0f, 1.0f, -1.0f,
-1.0f, -1.0f, -1.0f,
-1.0f, -1.0f, 1.0f,
1.0f, -1.0f, -1.0f,
1.0f, -1.0f, -1.0f,
-1.0f, -1.0f, 1.0f,
1.0f, -1.0f, 1.0f
});
boxvao.set_buffer(BufferTarget.ArrayBuffer, vbo);
boxvao.attrib_pointer(0, 3, VertexAttribPointerType.Float, false, sizeof(float) * 3, 0);
//boxvao.set_attribute_pointer(0, AttribType.Vec3, vbo, vec3.bytesize);
}
public AdvMesh()
{
// init buffers:
vertex_buffer = Glow.Buffer.create(this.vertices.ToArray());
element_buffer = Glow.Buffer.create(this.indices.ToArray());
// setup vao:
vao = new Vertexarray();
vao.set_buffer(OpenTK.Graphics.OpenGL4.BufferTarget.ArrayBuffer, vertex_buffer);
vao.attrib_pointer(POSITION, AttribType.Vec3, vertex.bytesize, 0);
vao.attrib_pointer(TEXCOORD, AttribType.Vec2, vertex.bytesize, vec3.bytesize);
vao.attrib_pointer(NORMAL, AttribType.Vec3, vertex.bytesize, vec3.bytesize + vec2.bytesize);
vao.set_elementbuffer(element_buffer);
}
private static void InitializeScreenQuad()
{
imageEffectQuadVBO = new Buffer <float>();
imageEffectQuadVBO.bufferdata(new float[] {
-1f, -1f,
1f, -1f,
-1f, 1f,
1f, 1f
}, BufferUsageHint.StaticDraw);
imageEffectQuadEBO = new Buffer <uint>();
imageEffectQuadEBO.bufferdata(new uint[] {
0, 1, 2,
3, 2, 1
}, BufferUsageHint.StaticDraw);
imageEffectQuadVAO = new Vertexarray();
imageEffectQuadVAO.set_buffer(BufferTarget.ArrayBuffer, imageEffectQuadVBO);
imageEffectQuadVAO.set_buffer(BufferTarget.ElementArrayBuffer, imageEffectQuadEBO);
imageEffectQuadVAO.attrib_pointer(0, 2, VertexAttribPointerType.Float, false, sizeof(float) * 2, 0);
}
public Textbox()
{
vao = new Vertexarray();
vbo = new Buffer <vec4>();
ebo = new Buffer <uint>();
vao.set_buffer(OpenTK.Graphics.OpenGL4.BufferTarget.ArrayBuffer, vbo);
vao.set_buffer(OpenTK.Graphics.OpenGL4.BufferTarget.ElementArrayBuffer, ebo);
vao.attrib_pointer(Canvas.rectShader.get_attrib_location("posuv"), 4, OpenTK.Graphics.OpenGL4.VertexAttribPointerType.Float, false, sizeof(float) * 4, 0);
Game.window.KeyPress += Window_KeyPress;
Game.window.KeyDown += Window_KeyDown;
base.OnFocus += TextBox_OnFocus;
base.OnUnfocus += TextBox_OnUnfocus;
this.initCursor();
}
static void Main(string[] args)
{
GameWindow w = new GameWindow();
ShaderProgram sp = null;
Vertexarray vao = null;
Buffer <float> vbo = null;
Buffer <uint> ebo = null;
Texture2D texture = null;
w.Load += (s, a) => {
GL.ClearColor(0, 0, 0, 1);
// setting up shader
var frag = new Shader(ShaderType.FragmentShader, File.ReadAllText("frag.glsl"));
var vert = new Shader(ShaderType.VertexShader, File.ReadAllText("vert.glsl"));
sp = new ShaderProgram(frag, vert);
frag.Dispose();
vert.Dispose();
// setting up buffers
vbo = new Buffer <float>();
vbo.bufferdata(new float[] {
-.5f, -.5f, 0, -0.5f, -0.5f,
0, .5f, 0, .5f, 1.5f,
.5f, -.5f, 0, 1.5f, -0.5f
}, BufferUsageHint.StaticDraw);
ebo = new Buffer <uint>();
ebo.bufferdata(new uint[] {
0, 1, 2
}, BufferUsageHint.StaticDraw);
// setting up vao
vao = new Vertexarray();
vao.set_buffer(BufferTarget.ArrayBuffer, vbo);
vao.set_buffer(BufferTarget.ElementArrayBuffer, ebo);
vao.attrib_pointer(sp.getAttribLocation("pos"), 3, VertexAttribPointerType.Float, false, sizeof(float) * 5, 0);
vao.attrib_pointer(sp.getAttribLocation("uv"), 2, VertexAttribPointerType.Float, false, sizeof(float) * 5, sizeof(float) * 3);
// setting up texture
/*
* var r = new Random();
* var pixels = new Color32bit[16, 16];
* for (int x = 0; x < 16; x++) {
* for (int y = 0; y < 16; y++) {
* if (x == 0 || y == 0 || x == 15 || y == 15) {
* pixels[x, y] = new Color32bit(1.0f);
* } else {
* pixels[x, y] = new Color32bit((float)r.NextDouble(), (float)r.NextDouble(), (float)r.NextDouble());
* }
* }
* }
* texture = new Texture2D(pixels) {
* Filter = Filter.Nearest,
* };*/
var sw = new Stopwatch();
sw.Start();
texture = new Texture2D("Skybox_back.png");
sw.Stop();
Console.WriteLine(sw.ElapsedMilliseconds);
foreach (var item in GLObject.Instances)
{
Console.WriteLine(item);
}
};
w.RenderFrame += (s, e) => {
GL.Clear(ClearBufferMask.ColorBufferBit);
sp.use();
texture.bind(TextureUnit.Texture0);
//vao.DrawArrays(PrimitiveType.Triangles, 0, 9);
vao.draw_elements(PrimitiveType.Triangles, 3, DrawElementsType.UnsignedInt);
GL.Flush();
w.SwapBuffers();
};
var r = new Random();
w.UpdateFrame += (s, e) => {
//texture.pixels[r.Next(texture.width), r.Next(texture.height)] = new color((float)r.NextDouble(), (float)r.NextDouble(), (float)r.NextDouble());
var h = r.Next(texture.height);
for (int i = 0; i < texture.width; i++)
{
texture.pixels[i, h] = new color(1);
}
texture.apply();
};
w.Resize += (s, e) => {
GL.Viewport(0, 0, w.Width, w.Height);
};
w.Run();
}
