protected override void OnLoad(EventArgs e)
{
base.OnLoad(e);
GL.ClearColor(0.2f, 0.2f, 0.2f, 1.0f);
GL.Enable(EnableCap.DepthTest);
GL.DepthFunc(DepthFunction.Less);
//! Load model for a boid
vao = GL.GenVertexArray();
GL.BindVertexArray(vao);
vbo = GL.GenBuffer();
GL.BindBuffer(BufferTarget.ArrayBuffer, vbo);
GL.BufferData(BufferTarget.ArrayBuffer, sizeof(float) * modelVertices.Length, modelVertices, BufferUsageHint.DynamicDraw);
GL.VertexAttribPointer(0, 3, VertexAttribPointerType.Float, false, 3 * sizeof(float), 0);
GL.EnableVertexArrayAttrib(vao, 0);
//! Set up matrix instanced arrays
_ModelMatrixArrayVBO = GL.GenBuffer();
GL.BindBuffer(BufferTarget.ArrayBuffer, _ModelMatrixArrayVBO);
GL.BufferData(BufferTarget.ArrayBuffer, flock.Boids.Count * (Vector4.SizeInBytes * 4), IntPtr.Zero, BufferUsageHint.DynamicDraw);
GL.EnableVertexArrayAttrib(vao, 1);
GL.VertexAttribPointer(1, 4, VertexAttribPointerType.Float, false, 4 * Vector4.SizeInBytes, 0);
GL.EnableVertexArrayAttrib(vao, 2);
GL.VertexAttribPointer(2, 4, VertexAttribPointerType.Float, false, 4 * Vector4.SizeInBytes, Vector4.SizeInBytes);
GL.EnableVertexArrayAttrib(vao, 3);
GL.VertexAttribPointer(3, 4, VertexAttribPointerType.Float, false, 4 * Vector4.SizeInBytes, Vector4.SizeInBytes * 2);
GL.EnableVertexArrayAttrib(vao, 4);
GL.VertexAttribPointer(4, 4, VertexAttribPointerType.Float, false, 4 * Vector4.SizeInBytes, Vector4.SizeInBytes * 3);
GL.VertexAttribDivisor(1, 1);
GL.VertexAttribDivisor(2, 1);
GL.VertexAttribDivisor(3, 1);
GL.VertexAttribDivisor(4, 1);
shader = ShaderHandler.LoadShader("vertex.shader", "fragment.shader");
view_id = GL.GetUniformLocation(shader, "view");
projection_id = GL.GetUniformLocation(shader, "projection");
}
protected override void OnLoad()
{
// Debug stuff
_debugProcCallbackHandle = GCHandle.Alloc(_debugProcCallback);
GL.DebugMessageCallback(_debugProcCallback, IntPtr.Zero);
GL.Enable(EnableCap.DebugOutput);
//GL.Enable(EnableCap.DebugOutputSynchronous);
// End debug stuff
//GL.ClearColor(0.3f, 0.3f, 0.3f, 1.0f);
GL.Enable(EnableCap.DepthTest);
// Create spheres
var bigspheresize = 1f;
Spheres.Add(new Sphere(0.0f, bigspheresize + 1.0f, 0.0f, bigspheresize));
Spheres.Add(new Sphere(0.5f, bigspheresize + 1.0f, -5.0f, bigspheresize));
Spheres.Last().Velocity.X = 1.0f;
texturedata = new float[]
{
//! Positions texture coords
-1.0f, -1.0f, 0.0f, //! bottom left corner
-1.0f, 1.0f, 0.0f, //! top left corner
1.0f, 1.0f, 0.0f, //! top right corner
1.0f, -1.0f, 0.0f, //! bottom right corner
};
// Create texture vao
GL.GenVertexArrays(1, out texture_vao);
GL.BindVertexArray(texture_vao);
// Texture vbo
GL.GenBuffers(1, out texture_vbo);
GL.BindBuffer(BufferTarget.ArrayBuffer, texture_vbo);
GL.BufferData(BufferTarget.ArrayBuffer, sizeof(float) * texturedata.Length, texturedata, BufferUsageHint.DynamicDraw);
// Vertex position attributes
GL.VertexAttribPointer(0, 3, VertexAttribPointerType.Float, false, 3 * sizeof(float), 0);
GL.EnableVertexArrayAttrib(texture_vao, 0);
// Create texture to draw pixels onto
GL.GenTextures(1, out texture);
GL.ActiveTexture(TextureUnit.Texture0);
GL.BindTexture(TextureTarget.Texture2D, texture);
GL.TexParameterI(TextureTarget.Texture2D, TextureParameterName.TextureWrapS, new int[] { (int)TextureParameterName.ClampToEdge });
GL.TexParameterI(TextureTarget.Texture2D, TextureParameterName.TextureWrapT, new int[] { (int)TextureParameterName.ClampToEdge });
GL.TexParameterI(TextureTarget.Texture2D, TextureParameterName.TextureMagFilter, new int[] { (int)All.Linear });
GL.TexParameterI(TextureTarget.Texture2D, TextureParameterName.TextureMinFilter, new int[] { (int)All.Linear });
GL.TexImage2D(TextureTarget.Texture2D, 0, PixelInternalFormat.Rgba32f, Width, Height, 0, PixelFormat.Rgba, PixelType.Float, IntPtr.Zero);
GL.BindImageTexture(0, texture, 0, false, 0, TextureAccess.WriteOnly, SizedInternalFormat.Rgba32f);
texture_shader = ShaderHandler.LoadShader("vertex.shader", "fragment.shader");
rays_compute_shader = ShaderHandler.LoadSingleShader("compute.shader", ShaderType.ComputeShader);
//! Send texture resolution to fragment shader
GL.UseProgram(texture_shader);
GL.Uniform1(GL.GetUniformLocation(texture_shader, "width"), (float)Width);
GL.Uniform1(GL.GetUniformLocation(texture_shader, "height"), (float)Height);
// Initialise Camera
camera = new Camera(this);
// Initialise compute shader uniforms
GL.UseProgram(rays_compute_shader);
GL.Uniform1(GL.GetUniformLocation(rays_compute_shader, "_randseed"), (float)random_seed);
camera_id = GL.GetUniformLocation(rays_compute_shader, "camera");
rayBottomLeft = GL.GetUniformLocation(rays_compute_shader, "rayBottomLeft");
rayBottomRight = GL.GetUniformLocation(rays_compute_shader, "rayBottomRight");
rayTopLeft = GL.GetUniformLocation(rays_compute_shader, "rayTopLeft");
rayTopRight = GL.GetUniformLocation(rays_compute_shader, "rayTopRight");
sphereUniform = GL.GetUniformLocation(rays_compute_shader, "spheres");
//skybox_id = GL.GetUniformLocation(rays_compute_shader, "skybox");
base.OnLoad();
}
