protected override void Dispose(bool disposing)
{
base.Dispose(disposing);
if (this.scrollBar != null)
{
this.scrollBar.Dispose();
this.scrollBar = (Button)null;
}
if (this.selectedVAO != null)
{
this.selectedVAO.DisposeChildren = true;
this.selectedVAO.Dispose();
this.selectedVAO = (VAO)null;
}
if (TextBox.scrollbarTexture != null)
{
TextBox.scrollbarTexture.Dispose();
TextBox.scrollbarTexture = (Texture)null;
}
foreach (UIElement vao in this.vaos)
{
vao.Dispose();
}
this.vaos.Clear();
}
void RunVertexShader(VAO vao)
{
for (int i = 0; i < vao.vbo.Length;)
{
var v0 = Vert(vao.vbo[i]);
var v1 = Vert(vao.vbo[i + 1]);
var v2 = Vert(vao.vbo[i + 2]);
DoNDCCoord(v0);
DoNDCCoord(v1);
DoNDCCoord(v2);
var d01 = v1.vertex - v0.vertex;
var d02 = v2.vertex - v0.vertex;
// 顺便 背面剔除 backface culling
var dimen = d01.x * d02.y - d01.y * d02.x;
if (dimen < 0)
{
vertexList.Add(v0);
vertexList.Add(v1);
vertexList.Add(v2);
}
i += 3;
}
}
private void UpdateGeometry(Shader shader)
{
Mesh mesh = new Mesh();
var roomSize = 8;
var plane = Meshes.CreateQuad(roomSize, roomSize, 2, 2);
var xform = new Transformation();
xform.TranslateGlobal(0, -roomSize / 2, 0);
mesh.Add(plane.Transform(xform));
xform.RotateZGlobal(90f);
mesh.Add(plane.Transform(xform));
xform.RotateZGlobal(90f);
mesh.Add(plane.Transform(xform));
xform.RotateZGlobal(90f);
mesh.Add(plane.Transform(xform));
xform.RotateYGlobal(90f);
mesh.Add(plane.Transform(xform));
xform.RotateYGlobal(180f);
mesh.Add(plane.Transform(xform));
var sphere = Meshes.CreateSphere(1);
mesh.Add(sphere);
var suzanne = Obj2Mesh.FromObj(Resourcen.suzanne);
mesh.Add(suzanne.Transform(System.Numerics.Matrix4x4.CreateTranslation(2, 2, -2)));
geometry = VAOLoader.FromMesh(mesh, shader);
}
public Planet(string databaseName, PlanetParameters parameters, Planet parent, VAO vao, Texture t)
: base(vao, t)
{
this.parent = parent;
this.OrbitalOrientation = -1;
this.DrawAxisTilt = true;
this.DrawOrbit = true;
this.AxisTilt = (float)MathHelper.DegreesToRadians(parameters.AxialTilt[databaseName]);
this.PlanetRadius = parameters.PlanetRadius[databaseName];
this.DistanceFromParent = parameters.DistanceFromSun[databaseName];
this.RotationalPeriod = parameters.RotationPeriod[databaseName];
this.OrbitalPeriod = parameters.OrbitalPeriod[databaseName];
this.setScale((float)PlanetRadius);
if (parent != null)
{
this.Orbit = new Orbit(this, parent.Translation, this.DistanceFromParent, 120);
DrawOrbit = true;
}
Vector3[] axisVerts = { new Vector3(0, -2, 0), new Vector3(0, 2, 0) };
axisLine = new VAO(axisVerts);
}
public BackgroundRenderer(IBackground background)
{
_program = new ShaderProgram("Shaders/Background.vert", "Shaders/Background.frag");
_vao = new VAO();
var flatBuffer = new VBO();
using (Bind.These(_vao, flatBuffer))
{
var data = new List <float>();
data.AddRange(new float[] { -1, -1 });
data.AddRange(background.BottomLeft.ToFloatArray());
data.AddRange(new float[] { 1, -1 });
data.AddRange(background.BottomRight.ToFloatArray());
data.AddRange(new float[] { 1, 1 });
data.AddRange(background.TopRight.ToFloatArray());
data.AddRange(new float[] { -1, 1 });
data.AddRange(background.TopLeft.ToFloatArray());
var flatData = data.ToArray();
flatBuffer.Update(flatData, flatData.Length * sizeof(float));
const int stride = sizeof(float) * 6;
GL.EnableVertexAttribArray(0);
GL.VertexAttribPointer(0, 2, VertexAttribPointerType.Float, false, stride, new IntPtr(0));
GL.EnableVertexAttribArray(1);
GL.VertexAttribPointer(1, 4, VertexAttribPointerType.Float, false, stride, new IntPtr(sizeof(float) * 2));
}
}
GameObject GetPBRModel(string meshFileName, string albedoMapFile, string normalMapFile, string metallicMapFile, string roughnessMapFile)
{
DefaultMesh mesh = contentLoader.Load <DefaultMesh>(meshFileName);
VAO geom = VAOLoader.FromMesh(mesh, renderer.GetPBRShader());
GameObject go = new GameObject();
PBRMaterial mat = new PBRMaterial();
go.mesh = geom;
go.material = mat;
//mat.metal = 1.0f;
//mat.metal = 0f;
mat.roughness = 0;
if (albedoMapFile != null)
{
ITexture2D albedoMap = contentLoader.Load <ITexture2D>(albedoMapFile);
mat.albedoMap = albedoMap;
}
if (normalMapFile != null && normalMapFile != "")
{
ITexture2D normalMap = contentLoader.Load <ITexture2D>(normalMapFile);
mat.normalMap = normalMap;
}
if (metallicMapFile != null)
{
ITexture2D metallicMap = contentLoader.Load <ITexture2D>(metallicMapFile);
mat.metallicMap = metallicMap;
}
if (roughnessMapFile != null)
{
ITexture2D roughnessMap = contentLoader.Load <ITexture2D>(roughnessMapFile);
mat.roughnessMap = roughnessMap;
}
return(go);
}
private void UpdateGeometry(Shader shader)
{
geometry = new VAO();
//generate position arrray on CPU
var rnd = new Random(12);
Func <float> Rnd01 = () => (float)rnd.NextDouble();
Func <float> RndCoord = () => (Rnd01() - 0.5f) * 2.0f;
var positions = new Vector2[pointCount];
for (int i = 0; i < pointCount; ++i)
{
positions[i] = new Vector2(RndCoord(), RndCoord());
}
//copy positions to GPU
geometry.SetAttribute(shader.GetAttributeLocation("in_position"), positions, VertexAttribPointerType.Float, 2);
//generate velocity arrray on CPU
Func <float> RndSpeed = () => (Rnd01() - 0.5f) * 0.1f;
var velocities = new Vector2[pointCount];
for (int i = 0; i < pointCount; ++i)
{
velocities[i] = new Vector2(RndSpeed(), RndSpeed());
}
//copy velocities to GPU
geometry.SetAttribute(shader.GetAttributeLocation("in_velocity"), velocities, VertexAttribPointerType.Float, 2);
}
uint CreateIrradianceMap(int frameBuffer, Matrix4x4 projection, Matrix4x4[] viewMatrices, uint cubeMap)
{
DefaultMesh cubeMesh = Meshes.CreateCubeWithNormals();
VAO renderIrradMapCube = VAOLoader.FromMesh(cubeMesh, irradianceMapShader);
//Create Irradiance Texture
int fbIrrWidth = 32;
int fbIrrHeight = 32;
int irradMap = CreateCubeMap(32, 32);
GL.BindFramebuffer(FramebufferTarget.Framebuffer, frameBuffer);
//GL.FramebufferTexture2D(FramebufferTarget.Framebuffer, FramebufferAttachment.ColorAttachment0, TextureTarget.TextureCubeMap, irradMap, 0);
//Render
//Irradiance Map
irradianceMapShader.Activate();
SetSampler(irradianceMapShader.ProgramID, 0, "environmentMap", cubeMap, TextureTarget.TextureCubeMap);
irradianceMapShader.Uniform("projection", projection, true);
GL.Viewport(0, 0, fbIrrWidth, fbIrrHeight);
GL.BindFramebuffer(FramebufferTarget.Framebuffer, frameBuffer);
for (int i = 0; i < 6; i++)
{
irradianceMapShader.Uniform("view", viewMatrices[i], true);
GL.FramebufferTexture2D(FramebufferTarget.Framebuffer, FramebufferAttachment.ColorAttachment0,
TextureTarget.TextureCubeMapPositiveX + i, irradMap, 0);
GL.Clear(ClearBufferMask.ColorBufferBit | ClearBufferMask.DepthBufferBit);
renderIrradMapCube.Draw();
}
GL.BindFramebuffer(FramebufferTarget.Framebuffer, 0);
return((uint)irradMap);
}
private void UpdateGeometry(IShaderProgram shaderProgram)
{
geometry = new VAO(PrimitiveType.Points);
//generate position array on CPU
var rnd = new Random(12);
float Rnd01() => (float)rnd.NextDouble();
float RndCoord() => (Rnd01() - 0.5f) * 2.0f;
var positions = new Vector2[pointCount];
for (int i = 0; i < pointCount; ++i)
{
positions[i] = new Vector2(RndCoord(), RndCoord());
}
//copy positions to GPU
geometry.SetAttribute(shaderProgram.GetResourceLocation(ShaderResourceType.Attribute, "in_position"), positions, VertexAttribPointerType.Float, 2);
//generate velocity arrray on CPU
float RndSpeed() => (Rnd01() - 0.5f) * 0.1f;
var velocities = new Vector2[pointCount];
for (int i = 0; i < pointCount; ++i)
{
velocities[i] = new Vector2(RndSpeed(), RndSpeed()) * 10.0f;
}
//copy velocities to GPU
geometry.SetAttribute(shaderProgram.GetResourceLocation(ShaderResourceType.Attribute, "in_velocity"), velocities, VertexAttribPointerType.Float, 2);
}
public PlanetRing(VAO vbos, Texture t, Planet p)
{
this.vao = vbos;
this.texture = t;
this.parent = p;
this.transform = parent.Transform;
}
public void Render()
{
if (shaderWatcher.CheckForShaderChange())
{
//update geometry when shader changes
geometry = CreateMesh(shaderWatcher.Shader);
}
GL.Clear(ClearBufferMask.ColorBufferBit | ClearBufferMask.DepthBufferBit);
var shader = shaderWatcher.Shader;
shader.Begin();
GL.Uniform3(shader.GetUniformLocation("light1Direction"), new Vector3(-1, -1, -1).Normalized());
GL.Uniform4(shader.GetUniformLocation("light1Color"), new Color4(1f, 1f, 1f, 1f));
GL.Uniform3(shader.GetUniformLocation("light2Position"), new Vector3(-1, -1, 1));
GL.Uniform4(shader.GetUniformLocation("light2Color"), new Color4(1f, .1f, .1f, 1f));
GL.Uniform3(shader.GetUniformLocation("light3Position"), new Vector3(-2, 2, 2));
GL.Uniform3(shader.GetUniformLocation("light3Direction"), new Vector3(1, -1, -1).Normalized());
GL.Uniform1(shader.GetUniformLocation("light3Angle"), Geometry.MathHelper.DegreesToRadians(10f));
GL.Uniform4(shader.GetUniformLocation("light3Color"), new Color4(0, 0, 1f, 1f));
GL.Uniform4(shader.GetUniformLocation("ambientLightColor"), new Color4(.1f, .1f, .1f, 1f));
GL.Uniform4(shader.GetUniformLocation("materialColor"), new Color4(.7f, .9f, .7f, 1f));
var cam = camera.CalcMatrix().ToOpenTK();
GL.UniformMatrix4(shader.GetUniformLocation("camera"), true, ref cam);
GL.Uniform3(shader.GetUniformLocation("cameraPosition"), camera.CalcPosition().ToOpenTK());
geometry.Draw();
shader.End();
}
public RawModel(VBOArrayF attributes)
{
this.shaderAttributes = attributes;
Buffer = new VAO(this.shaderAttributes);
VAOManager.genVAO(Buffer);
VAOManager.setBufferData(OpenTK.Graphics.OpenGL.BufferTarget.ArrayBuffer, Buffer);
}
private void UpdateMesh(Shader shader)
{
Mesh mesh = Obj2Mesh.FromObj(Resourcen.suzanne);
geometry = VAOLoader.FromMesh(mesh, shader);
//per instance attributes
var rnd = new Random(12);
Func <float> Rnd01 = () => (float)rnd.NextDouble();
Func <float> RndCoord = () => (Rnd01() - 0.5f) * 8.0f;
var instancePositions = new Vector3[particelCount];
for (int i = 0; i < particelCount; ++i)
{
instancePositions[i] = new Vector3(RndCoord(), RndCoord(), RndCoord());
}
geometry.SetAttribute(shader.GetAttributeLocation("instancePosition"), instancePositions, VertexAttribPointerType.Float, 3, true);
Func <float> RndSpeed = () => (Rnd01() - 0.5f);
var instanceSpeeds = new Vector3[particelCount];
for (int i = 0; i < particelCount; ++i)
{
instanceSpeeds[i] = new Vector3(RndSpeed(), RndSpeed(), RndSpeed());
}
geometry.SetAttribute(shader.GetAttributeLocation("instanceSpeed"), instanceSpeeds, VertexAttribPointerType.Float, 3, true);
}
public bool Load()
{
if (!_loaded)
{
_camera = Game.CurrentScene.PrimaryCamera.GetComponent <Camera>();
_program = new CubemapShaderProgram();
_cube = Geometry.CreateCube(_program, Vector3f.One * -_camera.Far / 2, Vector3f.One * _camera.Far / 2);
_textureID = GL.GenTexture();
GL.BindTexture(TextureTarget.TextureCubeMap, _textureID);
for (uint i = 0; i < _types.Length; i++)
{
try
{
_loadCubeSide(i);
}
catch (Exception)
{
return(false);
}
}
GL.BindTexture(TextureTarget.TextureCubeMap, 0);
ResourcesManager.AddDisposableResource(this);
_loaded = true;
}
return(true);
}
/// <summary>
/// Creates a new <c>ChunkMesh</c> renderable.
/// </summary>
/// <param name="chunk"></param>
/// <param name="geometry"></param>
public ChunkMesh(Chunk chunk, VAO geometry)
{
_chunk = chunk;
_geometry = geometry;
Bounds = new AxisAlignedBoundingBox(_chunk.World, _chunk.World + Chunk.Dimensions);
}
public TextureRenderer2D(Vector2 position, Vector2 size, Texture texture, Shader shader)
{
_texture = texture;
_shader = shader;
DefaultMesh mesh = new DefaultMesh();
mesh.Position.Add(new Vector3(position.X, position.Y, 0)); //0
mesh.Position.Add(new Vector3(position.X + size.X, position.Y, 0)); //1
mesh.Position.Add(new Vector3(position.X + size.X, position.Y + size.Y, 0)); //2
mesh.Position.Add(new Vector3(position.X, position.Y + size.Y, 0)); //3
mesh.TexCoord.Add(new Vector2(0.0f, 0.0f));
mesh.TexCoord.Add(new Vector2(1.0f, 0.0f));
mesh.TexCoord.Add(new Vector2(1.0f, 1.0f));
mesh.TexCoord.Add(new Vector2(0.0f, 1.0f));
mesh.IDs.Add(0);
mesh.IDs.Add(2);
mesh.IDs.Add(1);
mesh.IDs.Add(0);
mesh.IDs.Add(3);
mesh.IDs.Add(2);
_geometry = VAOLoader.FromMesh(mesh, shader);
}
public Deferred(IContentLoader contentLoader, Dictionary <Enums.EntityType, DefaultMesh> meshes)
{
_deferredProgram = contentLoader.Load <IShaderProgram>("deferred.*");
foreach (var meshContainer in meshes)
{
VAO geometry = VAOLoader.FromMesh(meshContainer.Value, _deferredProgram);
if (meshContainer.Value is TBNMesh mesh)
{
var loc = _deferredProgram.GetResourceLocation(ShaderResourceType.Attribute, TBNMesh.TangentName);
geometry.SetAttribute(loc, mesh.Tangent.ToArray(), VertexAttribPointerType.Float, 3);
loc = _deferredProgram.GetResourceLocation(ShaderResourceType.Attribute, TBNMesh.BitangentName);
geometry.SetAttribute(loc, mesh.Bitangent.ToArray(), VertexAttribPointerType.Float, 3);
}
_geometries.Add(meshContainer.Key, geometry);
}
_defaultMap = contentLoader.Load <ITexture2D>("Nvidia.png");
_projectilesGenerationNvidia = new ProjectileGeneration(contentLoader, meshes[Enums.EntityType.NvidiaParticle], Enums.EntityType.NvidiaParticle);
_projectilesGenerationRadeon = new ProjectileGeneration(contentLoader, meshes[Enums.EntityType.RadeonParticle], Enums.EntityType.RadeonParticle);
_addProjectilesNvidia = new AddWithDepthTest(contentLoader);
_addProjectilesRadeon = new AddWithDepthTest(contentLoader);
_tesselation = new Tesselation(contentLoader);
_addTesselation = new AddWithDepthTest(contentLoader);
}
public PolygonLayerRenderer(IEnumerable <PolygonLayer> polygons)
{
_program = new ShaderProgram("Shaders/PolygonModel.vert", "Shaders/PolygonModel.frag");
var polygonModel = polygons.First();
_vao = new VAO();
var flatBuffer = new VBO();
using (Bind.These(_vao, flatBuffer))
{
var data = new List <float>();
foreach (var edge in polygonModel.Polygons.SelectMany(p => p.Edges))
{
count++;
data.AddRange(edge.Start.Position.ToArray().Select(d => (float)d));
data.AddRange(edge.Start.Color.ToFloatArray());
data.AddRange(edge.End.Position.ToArray().Select(d => (float)d));
data.AddRange(Color.Aqua.ToFloatArray());
}
var flatData = data.ToArray();
flatBuffer.Update(flatData, flatData.Length * sizeof(float));
const int stride = sizeof(float) * 7;
GL.EnableVertexAttribArray(0);
GL.VertexAttribPointer(0, 3, VertexAttribPointerType.Float, false, stride, new IntPtr(0));
GL.EnableVertexAttribArray(1);
GL.VertexAttribPointer(1, 4, VertexAttribPointerType.Float, false, stride, new IntPtr(sizeof(float) * 3));
}
}
public bool Create()
{
CheckError("init");
Shader = new Shader("SilkyNvg-OpenGL-Shader", EdgeAntiAlias, this);
if (!Shader.Status)
{
return(false);
}
CheckError("uniform locations");
Shader.GetUniforms();
_vao = new(Gl);
_vao.Vbo = new(Gl);
Filter = new StateFilter();
Shader.BindUniformBlock();
// Dummy tex will always be at index 0.
DummyTex = CreateTexture(Texture.Alpha, new Vector2D <uint>(1, 1), 0, null);
CheckError("create done!");
Gl.Finish();
return(true);
}
public ImageWithCaption(string titleText, string captionText, string media)
: this(titleText, captionText)
{
image = new Texture(media);
imageVAO = Utilities.CreateQuad(Shaders.SimpleTexturedShader, Vector2.Zero, new Vector2(904, 410));
imageModelMatrix = Matrix4.CreateTranslation(new Vector3(72, 720 - 65 - 410, 0));
}
protected override void Dispose(bool disposing)
{
base.Dispose(disposing);
if (scrollBar != null)
{
scrollBar.Dispose();
scrollBar = null;
}
if (selectedVAO != null)
{
selectedVAO.DisposeChildren = true;
selectedVAO.Dispose();
selectedVAO = null;
}
if (scrollbarTexture != null)
{
scrollbarTexture.Dispose();
scrollbarTexture = null;
}
foreach (var vao in vaos)
{
vao.Dispose();
}
vaos.Clear();
}
public static Shape CreateCircle(VertexAttrib VertexPositionAttrib, float radius = 1, int slices = 64)
{
float dtheta = MathHelper.TwoPi / (slices - 1);
var theta = 0f;
Vector3[] Vertices = new Vector3[slices + 1];
Vertices[0] = new Vector3(0, 0, 0);
for (var i = 0; i < slices; i++)
{
Vertices[i + 1] = new Vector3((float)Math.Cos(theta) * radius, (float)Math.Sin(theta) * radius, 0);
theta += dtheta;
}
Buffer <Vector3> VertexBuffer = new Buffer <Vector3>();
VertexBuffer.Init(BufferTarget.ArrayBuffer, Vertices);
return(new DynamicShape()
.WithVertexAttrib(VertexPositionAttrib, VertexBuffer)
.WithDisposeFunction(() => {
VertexBuffer?.Dispose();
})
.SetDrawFunction((VertexArray VAO) => {
VAO.DrawArrays(PrimitiveType.TriangleFan, 0, VertexBuffer.ElementCount);
}));
}
public ImageAndText(string titleText, string media, string[] bulletText)
: this(titleText, bulletText)
{
image = new Texture(media);
imageVAO = Utilities.CreateQuad(Shaders.SimpleTexturedShader, Vector2.Zero, new Vector2(441, 410));
imageModelMatrix = Matrix4.CreateTranslation(new Vector3(72, 720 - 227 - 410, 0));
}
public ColorGradient()
{
if (UserInterface.GetElement(nameof(ColorGradient)) != null)
{
throw new Exception("Only one color picker can currently exist at once. This is a limitation I intend to remove soon.");
}
this.Program = Shaders.GradientShader;
this.Program.Use();
this.Program["hue"].SetValue(new Vector3(this.h, 0.0f, 0.0f));
this.Program["sel"].SetValue(new Vector2(this.selx, this.sely));
this.gradientQuad = Geometry.CreateQuad(this.Program, Vector2.Zero, new Vector2(150f, 150f));
this.RelativeTo = Corner.TopLeft;
this.Position = new Point(30, 50);
this.Size = new Point(150, 150);
this.Name = nameof(ColorGradient);
this.OnMouseDown = (OnMouse)((sender, eventArgs) =>
{
this.mouseDown = eventArgs.Button == MouseButton.Left;
this.UpdateMousePosition(eventArgs.Location.X, eventArgs.Location.Y);
});
this.OnMouseUp = (OnMouse)((sender, eventArgs) => this.mouseDown = eventArgs.Button != MouseButton.Left && this.mouseDown);
this.OnMouseLeave = (OnMouse)((sender, eventArgs) => this.mouseDown = false);
this.OnMouseMove = (OnMouse)((sender, eventArgs) => this.UpdateMousePosition(eventArgs.Location.X, eventArgs.Location.Y));
this.UpdateColor();
}
public static void Draw3DPlotLeft(float[] data, float depth, Vector3 color, Matrix4 viewMatrix, bool log = false)
{
if (data.Length < 441) throw new ArgumentException("The argument data was not the correct length.");
for (int i = 0; i < fftData.Length; i++)
fftData[i] = new Vector3((log ? Math.Log10(i) * 166 : i) - 441 / 2f, Math.Max(-200, Math.Min(200, 200 * data[i])), depth);
//fftData[i] = new Vector3(i - 441 / 2f, Math.Max(-200, Math.Min(200, 200 * data[i])), depth);
if (fftVAO == null)
{
int[] array = new int[441];
for (int i = 0; i < array.Length; i++) array[i] = i;
fftHandle = GCHandle.Alloc(fftData, GCHandleType.Pinned);
fftVBO = BufferData(fftVBO, fftData, fftHandle);
fftVAO = new VAO<Vector3>(Shaders.SimpleColoredShader, fftVBO, "in_position", new VBO<int>(array, BufferTarget.ElementArrayBuffer, BufferUsageHint.StaticDraw));
fftVAO.DrawMode = BeginMode.LineStrip;
}
else fftVBO = BufferData(fftVBO, fftData, fftHandle);
Shaders.SimpleColoredShader.Use();
Shaders.SimpleColoredShader["projectionMatrix"].SetValue(Program.uiProjectionMatrix);
Shaders.SimpleColoredShader["viewMatrix"].SetValue(viewMatrix);
Shaders.SimpleColoredShader["modelMatrix"].SetValue(Matrix4.CreateTranslation(new Vector3(72 + 441 / 2f, 288, 0)));
Shaders.SimpleColoredShader["color"].SetValue(color);
fftVAO.Draw();
}
static unsafe void Main(string[] args)
{
var Options = WindowOptions.Default;
Options.Size = new Silk.NET.Maths.Vector2D <int>(800, 600);
Options.Title = "LearnOpenGL with Silk.NET";
var window = Window.Create(Options);
window.Render += (obj) => {
GL.GetApi(window).ClearColor(Color.Black);
GL.GetApi(window).Clear((uint)ClearBufferMask.ColorBufferBit);
vao.Bind();
shader.Use();
GL.GetApi(window).DrawElements((GLEnum)PrimitiveType.Triangles, (uint)Indices.Length, GLEnum.UnsignedInt, null);
};
window.Load += () => {
vbo = new VBO(GL.GetApi(window), Vertices, GLEnum.StaticDraw);
ebo = new EBO(GL.GetApi(window), Indices);
vao = new VAO(GL.GetApi(window), vbo, ebo);
shader = new Abstractions.Shader(GL.GetApi(window), "shader.vert", "shader.frag");
vao.VertexAttributePointer(0, 3, VertexAttribPointerType.Float, 0, 0);
};
window.Closing += () => {
vbo.Dispose();
ebo.Dispose();
vao.Dispose();
shader.Dispose();
};
window.Run();
}
public virtual void Load(int width, int height)
{
Width = width;
Height = height;
_page = new Texture();
GUIShader = Assets.Fetch<ShaderProgram>("GUI");
GUIShader.AddUniform("scale");
VBO = new VBO<VertexPositionNormalTexture>();
VAO = new VAO<VertexPositionNormalTexture>();
VBO.Buffer(new[]{
new VertexPositionNormalTexture{Position = new Vector3(0, Height, 0f),Normal = Vector3.UnitZ,TexCoord = new Vector2(0, Height)},
new VertexPositionNormalTexture{Position = new Vector3(Width, Height, 0f),Normal = Vector3.UnitZ,TexCoord = new Vector2(Width, Height)},
new VertexPositionNormalTexture{Position = new Vector3(Width, 0, 0f),Normal = Vector3.UnitZ,TexCoord = new Vector2(Width, 0)},
new VertexPositionNormalTexture{Position = new Vector3(0, 0, 0),Normal = Vector3.UnitZ,TexCoord = new Vector2(0,0)}
});
VAO.Setup(GUIShader, VBO);
_webView = WebCore.CreateWebView(Width, Height);
WebCore.BaseDirectory = Path.Combine(Directory.GetCurrentDirectory(), "GUI");
_webView.FlushAlpha = false;
_webView.IsTransparent = true;
_webView.CreateObject("console");
_webView.SetObjectCallback("console", "log", (sender, e) => Bus.Add(new DebugMessage(Timer.LastTickTime, e.Arguments[0].ToString())));
_webView.CreateObject("GUI");
_webView.CreateObject("Bus");
_webView.LoadFile("index.htm");
}
public VisualLevel(IContentLoader contentLoader)
{
void Add(ElementType elementType, string resourceName, int sliceID)
{
tileTypes.Add(elementType, new Tuple <string, int>(resourceName, sliceID));
}
int slice = 0;
Add(ElementType.Floor, "GroundGravel_Grass", slice++);
Add(ElementType.Man, "character4", slice++);
Add(ElementType.Box, ".Crate_Brown", slice++);
Add(ElementType.Goal, "EndPoint_Red", slice++);
Add(ElementType.ManOnGoal, "EndPointCharacter", slice++);
Add(ElementType.BoxOnGoal, "EndPointCrate_Brown", slice++);
Add(ElementType.Wall, "Wall_Beige", slice++);
var names = from item in tileTypes select item.Value.Item1;
texArray = contentLoader.Load <ITexture2dArray>(names);
shdTexColor = contentLoader.Load <IShaderProgram>("texColor.*");
vaoLevelGeometry = new VAO(PrimitiveType.Quads);
var quadPos = new Vector2[4] {
Vector2.Zero, Vector2.UnitX, Vector2.One, Vector2.UnitY
};
var locPosition = shdTexColor.GetResourceLocation(ShaderResourceType.Attribute, "position");
vaoLevelGeometry.SetAttribute(locPosition, quadPos);
}
public virtual void Draw(ShaderProgram shader, VAO vao, GameWindow gw)
{
shader.SetUniform("rect", GlobalBounds);
shader.SetUniform("color", BackgroundColor);
shader.SetUniform("borderWidth", BorderWidth);
shader.SetUniform("borderColor", BorderColor);
if (BackgroundImage != null)
{
BackgroundImage.Bind();
shader.SetUniform("useTexture", true);
}
else
{
shader.SetUniform("useTexture", false);
}
vao.DrawArrays(OpenTK.Graphics.OpenGL.PrimitiveType.TriangleStrip);
var temp = this as IText;
if (temp != null && !string.IsNullOrWhiteSpace(temp.Text))
{
GuiManager.setScisor(GlobalBounds, BorderWidth, gw, Parent);
temp.TextImage.Bind();
shader.SetUniform("useTexture", true);
shader.SetUniform("rect", temp.TextBounds);
shader.SetUniform("borderWidth", 0);
vao.DrawArrays(OpenTK.Graphics.OpenGL.PrimitiveType.TriangleStrip);
}
}
//public OnMouse OnColorChange { get; set; }
#endregion
#region Constructor
public ColorGradient()
{
var colorGradient = UI.GetElement("ColorGradient");
if (colorGradient != null)
{
throw new Exception("Only one color picker can currently exist at once. This is a limitation I intend to remove soon.");
}
this.Program = Shaders.GradientShader;
this.Program.Use();
this.Program["hue"].SetValue(new Vector3(h, 0, 0));
this.Program["sel"].SetValue(new Vector2(selx, sely));
this.gradientQuad = Geometry.CreateQuad(this.Program, Vector2.Zero, new Vector2(150, 150));
this.RelativeTo = Corner.TopLeft;
this.Position = new Point(30, 50);
this.Size = new Point(150, 150);
this.Name = "ColorGradient";
// set up the events for the mouse to move the indicator around
//this.OnMouseDown = new OnMouse((sender, eventArgs) =>
//{
// mouseDown = (eventArgs.Button == MouseButton.Left);
// UpdateMousePosition(eventArgs.Location.X, eventArgs.Location.Y);
//});
//this.OnMouseUp = new OnMouse((sender, eventArgs) => mouseDown = (eventArgs.Button == MouseButton.Left ? false : mouseDown));
//this.OnMouseLeave = new OnMouse((sender, eventArgs) => mouseDown = false);
//this.OnMouseMove = new OnMouse((sender, eventArgs) => UpdateMousePosition(eventArgs.Location.X, eventArgs.Location.Y));
UpdateColor();
}
public SphereCut(IContentLoader contentLoader, float size)
{
_sphereCutProgram = contentLoader.Load <IShaderProgram>("imageOnGeometry.*");
var sphere = Meshes.CreateSphere(size, 5).SwitchHandedness();
_sphereGeometry = VAOLoader.FromMesh(sphere, _sphereCutProgram);
}
public ProjectileGeneration(IContentLoader contentLoader, DefaultMesh triangleMesh, Enums.EntityType triangleType)
{
_projectileGenerationProgram = contentLoader.Load <IShaderProgram>(new[] { "ProjectileGeneration.vert", "deferred.frag" });
_trianglesGeometry = VAOLoader.FromMesh(triangleMesh, _projectileGenerationProgram);
_triangleType = triangleType;
_add = new AddWithDepthTest(contentLoader);
}
public virtual void DrawToPickBuffer(ShaderProgram shader, VAO vao, GameWindow gw)
{
shader.SetUniform("color", new Vector4(PickBufferColor.X / 255, PickBufferColor.Y / 255, PickBufferColor.Z / 255, PickBufferColor.W / 255));
shader.SetUniform("rect", GlobalBounds);
shader.SetUniform("borderWidth", 0);
shader.SetUniform("useTexture", false);
vao.DrawArrays(OpenTK.Graphics.OpenGL.PrimitiveType.TriangleStrip);
}
public FillRenderer(Game game, GL gl)
{
_game = game;
_gl = gl;
_shader = ResourceManager.LoadShader("fillVertexShader", "fillFragmentShader");
_vao = ResourceManager.CreateVao();
}
private void UpdateGeometry(Shader shader)
{
Mesh mesh = new Mesh();
//mesh.Add(Meshes.CreateSphere(.7f, 3));
mesh.Add(Obj2Mesh.FromObj(Resourcen.suzanne));
geometry = VAOLoader.FromMesh(mesh, shader);
}
private static VAO CreateMesh(Shader shader)
{
Mesh mesh = Obj2Mesh.FromObj(Resourcen.suzanne);
var vao = new VAO();
vao.SetAttribute(shader.GetAttributeLocation("position"), mesh.positions.ToArray(), VertexAttribPointerType.Float, 3);
vao.SetAttribute(shader.GetAttributeLocation("normal"), mesh.normals.ToArray(), VertexAttribPointerType.Float, 3);
vao.SetID(mesh.ids.ToArray(), PrimitiveType.Triangles);
return vao;
}
private static VAO CreateMesh(Shader shader)
{
Mesh mesh = Meshes.CreateSphere(0.03f, 2);
var vao = new VAO();
vao.SetAttribute(shader.GetAttributeLocation("position"), mesh.positions.ToArray(), VertexAttribPointerType.Float, 3);
vao.SetAttribute(shader.GetAttributeLocation("normal"), mesh.normals.ToArray(), VertexAttribPointerType.Float, 3);
vao.SetID(mesh.ids.ToArray(), PrimitiveType.Triangles);
return vao;
}
public MainVisual()
{
var sVertex = Encoding.UTF8.GetString(Resourcen.vertex);
var sFragment = Encoding.UTF8.GetString(Resourcen.fragment);
shader = ShaderLoader.FromStrings(sVertex, sFragment);
geometry = CreateMesh(shader);
CreatePerInstanceAttributes(geometry, shader);
GL.Enable(EnableCap.DepthTest);
}
public MainVisual()
{
camera.FarClip = 500;
camera.Distance = 30;
var sVertex = Encoding.UTF8.GetString(Resourcen.vertex);
var sFragment = Encoding.UTF8.GetString(Resourcen.fragment);
shader = ShaderLoader.FromStrings(sVertex, sFragment);
geometry = CreateMesh(shader);
GL.Enable(EnableCap.DepthTest);
GL.Enable(EnableCap.CullFace);
timeSource.Start();
}
public TwoImages(string titleText, string media1, string media2)
{
title = new Text(Text.FontSize._72pt, titleText, Common.TitleColor);
title.ModelMatrix = Matrix4.CreateTranslation(new Vector3(80, 720 - 120, 0));
image1 = new Texture(media1);
image1VAO = Utilities.CreateQuad(Shaders.SimpleTexturedShader, Vector2.Zero, new Vector2(441, 410));
image1ModelMatrix = Matrix4.CreateTranslation(new Vector3(72, 720 - 227 - 410, 0));
image2 = new Texture(media2);
image2VAO = Utilities.CreateQuad(Shaders.SimpleTexturedShader, Vector2.Zero, new Vector2(441, 410));
image2ModelMatrix = Matrix4.CreateTranslation(new Vector3(535, 720 - 227 - 410, 0));
}
public Billboard(ShaderProgram program, Texture texture, Vector3[] locations, Vector3[] colors)
{
this.Program = program;
this.Texture = texture;
int[] elements = new int[locations.Length];
for (int i = 0; i < elements.Length; i++) elements[i] = i;
this.billboard = new VAO(program, new VBO<Vector3>(locations), new VBO<Vector3>(colors), new VBO<int>(elements));
this.billboard.DrawMode = BeginMode.Points;
this.billboard.DisposeChildren = true;
this.Color = new Vector4(1, 1, 1, 1);
}
public MainVisual()
{
shaderWatcher = new ShaderFileDebugger("../../LightingExample/Resources/vertex.vert"
, "../../LightingExample/Resources/fragment.frag"
, Resourcen.vertex, Resourcen.fragment);
geometry = CreateMesh(shaderWatcher.Shader);
camera.FarClip = 20;
camera.Distance = 5;
camera.FovY = 30;
GL.Enable(EnableCap.DepthTest);
GL.Enable(EnableCap.CullFace);
}
private static void CreatePerInstanceAttributes(VAO vao, Shader shader)
{
//per instance attributes
var rnd = new Random(12);
Func<float> Rnd01 = () => (float)rnd.NextDouble();
Func<float> RndCoord = () => (Rnd01() - 0.5f) * 2.0f;
var instancePositions = new Vector3[particelCount];
for (int i = 0; i < particelCount; ++i)
{
instancePositions[i] = new Vector3(RndCoord(), RndCoord(), RndCoord());
}
vao.SetAttribute(shader.GetAttributeLocation("instancePosition"), instancePositions, VertexAttribPointerType.Float, 3, true);
//todo: students: add per instance attribute speed here
//var locInstSpeed = shader.GetAttributeLocation("instanceSpeed");
}
public void Render()
{
if (shaderWatcher.CheckForShaderChange())
{
//update geometry when shader changes
geometry = CreateMesh(shaderWatcher.Shader);
}
GL.Clear(ClearBufferMask.ColorBufferBit | ClearBufferMask.DepthBufferBit);
var shader = shaderWatcher.Shader;
shader.Begin();
GL.Uniform4(shader.GetUniformLocation("lightColor"), new Color4(1f, 1f, 1f, 1f));
GL.Uniform3(shader.GetUniformLocation("lightPosition"), new Vector3(1, 1, 4));
GL.Uniform4(shader.GetUniformLocation("ambientLightColor"), new Color4(.2f, .2f, .2f, 1f));
GL.Uniform4(shader.GetUniformLocation("materialColor"), new Color4(1f, .5f, .5f, 1f));
Matrix4 cam = camera.CalcMatrix().ToOpenTK();
GL.UniformMatrix4(shader.GetUniformLocation("camera"), true, ref cam);
GL.Uniform3(shader.GetUniformLocation("cameraPosition"), camera.CalcPosition().ToOpenTK());
geometry.Draw();
shader.End();
}
public void Load()
{
_program = _assets.Fetch<ShaderProgram>("Main");
_vbo = new VBO();
data = new List<Vertex>();
_tex = _assets.Fetch<Texture>("blank.png");
const float size = 1f;
data.Add(new Vertex { Position = new Vector3(0, 0, 0), Colour = Color.Blue.ToVector4() });
data.Add(new Vertex { Position = new Vector3(size, 0, 0), Colour = Color.Blue.ToVector4() });
data.Add(new Vertex { Position = new Vector3(0, 0, 0), Colour = Color.Red.ToVector4() });
data.Add(new Vertex { Position = new Vector3(0, size, 0), Colour = Color.Red.ToVector4() });
data.Add(new Vertex { Position = new Vector3(0, 0, 0), Colour = Color.Green.ToVector4() });
data.Add(new Vertex { Position = new Vector3(0, 0, size), Colour = Color.Green.ToVector4() });
_vbo.Buffer(data.ToArray());
_vao = new VAO(_program, _vbo);
Loaded = true;
}
public void Load()
{
_program = _assets.Fetch<ShaderProgram>("Main");
_vbo = new VBO();
_data = new List<Vertex>();
_tex = _assets.Fetch<Texture>("blank.png");
stl = new STLLoader("Media/Models/testship.stl");
var col = Color.FromArgb(255, 94, 169, 198);
foreach (var element in stl.Elements)
{
_data.Add(new Vertex { Position = element.P1.ToVector3(), Normal = element.Normal.ToVector3(), Colour = new Vector4(col.R / 255f, col.G / 255f, col.B / 255f, col.A / 255f) });
_data.Add(new Vertex { Position = element.P2.ToVector3(), Normal = element.Normal.ToVector3(), Colour = new Vector4(col.R / 255f, col.G / 255f, col.B / 255f, col.A / 255f) });
_data.Add(new Vertex { Position = element.P3.ToVector3(), Normal = element.Normal.ToVector3(), Colour = new Vector4(col.R / 255f, col.G / 255f, col.B / 255f, col.A / 255f) });
}
_vbo.Buffer(_data.ToArray());
_vao = new VAO(_program, _vbo);
Loaded = true;
}
public void Load()
{
_program = _assets.Fetch<ShaderProgram>("Main");
_vbo = new VBO();
_tex = _assets.Fetch<Texture>("star.png");
data = new List<Vertex>();
var rnd = new Random();
for (var i = 0; i < 150; i++)
{
//rnd.NextDouble()
var x = rnd.NextFloat(-80f, 80f);
var y = rnd.NextFloat(-80f, 80f);
var z = rnd.NextFloat(0f, 10f) - 60.0f;
AddStar((float)rnd.NextDouble() + 0.1f, new Vector3(x, y,z));
}
_vbo.Buffer(data.ToArray());
_vao = new VAO(_program, _vbo);
Loaded = true;
}
public static void DrawSineLeft(Vector3 color, float f, float a = 100f, float t = 0f)
{
if (sineLeft == null)
{
Vector3[] sineArray = new Vector3[441];
int[] elementArray = new int[sineArray.Length];
for (int i = 0; i < sineArray.Length; i++)
{
sineArray[i] = new Vector3(i - 441 / 2f, 288, 0);
elementArray[i] = i;
}
VBO<Vector3> sineListVBO = new VBO<Vector3>(sineArray);
VBO<int> elementListVBO = new VBO<int>(elementArray, BufferTarget.ElementArrayBuffer);
sineLeft = new VAO<Vector3>(Shaders.SineShader, sineListVBO, "in_position", elementListVBO);
sineLeft.DrawMode = BeginMode.LineStrip;
}
Shaders.SineShader.Use();
Shaders.SineShader["projectionMatrix"].SetValue(Program.uiProjectionMatrix);
Shaders.SineShader["viewMatrix"].SetValue(Matrix4.Identity);
Shaders.SineShader["modelMatrix"].SetValue(Matrix4.CreateTranslation(new Vector3(72 + 441 / 2f, 0, 0)));
Shaders.SineShader["color"].SetValue(color);
Shaders.SineShader["timeAmplitudeFrequency"].SetValue(new Vector3(t, a, f));
Gl.LineWidth(2f);
sineLeft.Draw();
}
protected override void OnLoad(EventArgs e)
{
GL.Enable(EnableCap.Texture2D);
GL.Enable(EnableCap.CullFace);
GL.Enable(EnableCap.DepthTest);
GL.Enable(EnableCap.Blend);
GL.BlendFunc(BlendingFactorSrc.SrcAlpha, BlendingFactorDest.OneMinusSrcAlpha);
_fbo = new FBO(Width,Height);
_assetManager.Load();
_shader = _assetManager.Shader<DefaultShaderProgram>();
var data = new List<OpenGLVertex>
{
new OpenGLVertex {Position = new Vector3(-1, -1, 0),TexCoord = new Vector2(0,0)},
new OpenGLVertex {Position = new Vector3(1, -1, 0),TexCoord = new Vector2(1,0)},
new OpenGLVertex {Position = new Vector3(1, 1, 0),TexCoord = new Vector2(1,1)},
new OpenGLVertex {Position = new Vector3(-1, 1, 0),TexCoord = new Vector2(0,1)}
};
_vbo = new VBO(data){BeginMode = BeginMode.Quads};
_vao = new VAO(_assetManager.Shader<FlatShaderProgram>(), _vbo);
var dotdata = new List<OpenGLVertex>
{
new OpenGLVertex {Position = new Vector3(0, 0, 0)},
new OpenGLVertex {Position = new Vector3(10, 10, 0)},
};
_dotsvbo = new VBO(dotdata) { BeginMode = BeginMode.Lines };
_dotsvao = new VAO(_assetManager.Shader<BasicShaderProgram>(), _dotsvbo);
_viewManager.Load();
Bus.Add(new DebugMessage(Timer.LastTickTime, "Loaded OpenGL Window"));
var err = GL.GetError();
if (err != ErrorCode.NoError)
Console.WriteLine("Error at OnLoad: " + err);
}
private void Debug()
{
var vbo = new VBO();
foreach (var element in stl.Elements)
{
float x = (float)((element.P1.X + element.P2.X + element.P3.X) / 3.0f);
float y = (float)((element.P1.Y + element.P2.Y + element.P3.Y) / 3.0f);
float z = (float)((element.P1.Z + element.P2.Z + element.P3.Z) / 3.0f);
vbo.Data.Add(new Vertex { Position = new Vector3(x,y,z), Colour = Color.Purple.ToVector4() });
vbo.Data.Add(new Vertex { Position = new Vector3(x, y, z) + (element.Normal * 0.2).ToVector3(), Colour = Color.Purple.ToVector4() });
}
vbo.Buffer();
var vao = new VAO(_program, vbo);
using (Bind.Shader(_program))
using (Bind.Texture(_tex))
using (new Bind(vao))
{
_program.UpdateUniform("position", _gameObject.Transformation.ToMatrix4());
GL.DrawArrays(BeginMode.Lines, 0, vbo.Count);
}
}
public void RenderWithVAOSimple(ShaderProgram program)
{
if (chunkVAO == null)
{
List<Vector3> vertices = new List<Vector3>();
List<int> elements = new List<int>();
for (int x = 0 + offsetX; x < 32 + offsetX; x++)
{
for (int y = 0 + offsetZ; y < 32 + offsetZ; y++)
{
float h = Noise.Generate((x + 32) / 32f, (y + 32) / 45f);
h = (float)Math.Round(h * 8);
if(h < 0)
{
h = -h;
}
//for(float test = -10; test <= h; h--)
AddCube(new Vector3(x, 0, y), new Vector3(x + 1, h + 1, y + 1), vertices, elements);
}
}
Vector3[] vertex = vertices.ToArray();
int[] element = elements.ToArray();
Vector3[] normals = OpenGL.Geometry.CalculateNormals(vertex, element);
vertCount = vertex.Length;
chunkVAO = new VAO(program, new VBO<Vector3>(vertex), new VBO<Vector3>(normals), new VBO<int>(element, BufferTarget.ElementArrayBuffer, BufferUsageHint.StaticRead));
}
program["model_matrix"].SetValue(ModelMatrix);
chunkVAO.Draw();
}
public static void Init()
{
BackgroundQuad = Utilities.CreateQuad(Shaders.SimpleTexturedShader);
BackgroundTexture = new Texture("media/background.png");
BulletTexture = new Texture("media/bullet.png");
BulletQuad = Utilities.CreateQuad(Shaders.SimpleTexturedShader, Vector2.Zero, new Vector2(24, 24));
VBO<Vector3> vertices = new VBO<Vector3>(new Vector3[] { new Vector3(0, 0, 0), new Vector3(1, 0, 0), new Vector3(1, 1, 0), new Vector3(0, 1, 0) });
VBO<int> indices = new VBO<int>(new int[] { 0, 1, 2, 3, 0 }, BufferTarget.ElementArrayBuffer);
BoxQuad = new VAO(Shaders.SimpleColoredShader, vertices, indices);
BoxQuad.DrawMode = BeginMode.LineStrip;
indices = new VBO<int>(new int[] { 0, 1, 2, 3 }, BufferTarget.ElementArrayBuffer);
StencilQuad = new VAO(Shaders.SimpleColoredShader, vertices, indices);
StencilQuad.DrawMode = BeginMode.Quads;
vertices = new VBO<Vector3>(new Vector3[] { new Vector3(0.5, -0.01, 0), new Vector3(0.5, 1.01, 0), new Vector3(-0.01, 0.5, 0), new Vector3(1.01, 0.5, 0) });
indices = new VBO<int>(new int[] { 2, 3, 0, 1 }, BufferTarget.ElementArrayBuffer);
CrosshairVAO = new VAO(Shaders.SimpleColoredShader, vertices, indices);
CrosshairVAO.DrawMode = BeginMode.Lines;
Shaders.FontShader.Use();
Shaders.FontShader["viewMatrix"].SetValue(Matrix4.Identity);
Shaders.SimpleColoredShader.Use();
Shaders.SimpleColoredShader["viewMatrix"].SetValue(Matrix4.Identity);
}
private void Dispose(bool disposing)
{
if (VAO != null)
{
VAO.DisposeChildren = true;
VAO.Dispose();
VAO = null;
}
}
protected override void OnLoad(EventArgs e)
{
GL.Enable(EnableCap.Texture2D);
GL.Enable(EnableCap.CullFace);
GL.Enable(EnableCap.DepthTest);
GL.Enable(EnableCap.Blend);
GL.BlendFunc(BlendingFactorSrc.SrcAlpha, BlendingFactorDest.OneMinusSrcAlpha);
GL.PointSize(5f);
_ubo = new CameraUBO();
_shader = new BasicShaderProgram(_ubo);
_vao = new VAO(_shader, new VBO(new List<Vertex>(FetchData(_tree))) { BeginMode = BeginMode.Quads });
var green = new Color4(0.156f, 0.627f, 0.353f, 1.0f).ToVector4();
var data = new List<Vertex>();
foreach (var element in stl.Elements)
{
data.Add(new Vertex { Colour = green, Position = element.P1.ToVector3() });
data.Add(new Vertex { Colour = green, Position = element.P2.ToVector3() });
data.Add(new Vertex { Colour = green, Position = element.P3.ToVector3() });
}
_vao2 = new VAO(_shader, new VBO(data) { BeginMode = BeginMode.Triangles });
var filled = _tree.Flatten().Where(o => o.State == NodeState.Filled).ToArray();
_vaoFilled = new VAO(_shader, new VBO(new List<Vertex>(FetchDataSolid(filled))) { BeginMode = BeginMode.Quads });
var err = GL.GetError();
if (err != ErrorCode.NoError)
Console.WriteLine("Error at OnLoad: " + err);
}
public void RenderWithVAOGreedy(ShaderProgram program, bool draw = true)
{
if (chunkVAO == null)
{
List<Vector3> vertices = new List<Vector3>();
List<int> elements = new List<int>();
for (int d = 0; d < 3; d++)
{
int i, j, k, l, w, h, u = (d + 1) % 3, v = (d + 2) % 3;
int[] x = new int[3];
int[] q = new int[3];
bool[] mask = new bool[32 * 32];
q[d] = 1;
for (x[d] = -1; x[d] < 32; )
{
// Compute the mask
int n = 0;
for (x[v] = 0; x[v] < 32; ++x[v])
{
for (x[u] = 0; x[u] < 32; ++x[u])
{
mask[n++] = (0 <= x[d] ? data(x[0], x[1], x[2]) : false) !=
(x[d] < 32 - 1 ? data(x[0] + q[0], x[1] + q[1], x[2] + q[2]) : false);
}
}
// Increment x[d]
++x[d];
// Generate mesh for mask using lexicographic ordering
n = 0;
for (j = 0; j < 32; ++j)
{
for (i = 0; i < 32; )
{
if (mask[n])
{
// Compute width
for (w = 1; i + w < 32 && mask[n + w]; ++w) ;
// Compute height (this is slightly awkward
var done = false;
for (h = 1; j + h < 32; ++h)
{
for (k = 0; k < w; ++k)
{
if (!mask[n + k + h * 32])
{
done = true;
break;
}
}
if (done) break;
}
// Add quad
x[u] = i; x[v] = j;
int[] du = new int[3];
int[] dv = new int[3];
du[u] = w;
dv[v] = h;
AddFace(new Vector3(x[0], x[1], x[2]),
new Vector3(x[0] + du[0], x[1] + du[1], x[2] + du[2]),
new Vector3(x[0] + du[0] + dv[0], x[1] + du[1] + dv[1], x[2] + du[2] + dv[2]),
new Vector3(x[0] + dv[0], x[1] + dv[1], x[2] + dv[2]), vertices, elements);
// Zero-out mask
for (l = 0; l < h; ++l)
{
for (k = 0; k < w; ++k)
{
mask[n + k + l * 32] = false;
}
}
// Increment counters and continue
i += w; n += w;
}
else
{
++i; ++n;
}
}
}
}
}
Vector3[] vertex = vertices.ToArray();
int[] element = elements.ToArray();
Vector3[] normals = OpenGL.Geometry.CalculateNormals(vertex, element);
chunkVAO = new VAO(program, new VBO<Vector3>(vertex), new VBO<Vector3>(normals), new VBO<int>(element, BufferTarget.ElementArrayBuffer, BufferUsageHint.StaticRead));
}
if (draw)
{
program["model_matrix"].SetValue(ModelMatrix);
chunkVAO.Draw();
}
}