Mesh can now be rendered and therefore also the sphere

Nebulix/Rendering/Mesh.cs

@@ -6,13 +6,13 @@ namespace Nebulix.Rendering
 	public sealed class Mesh
 	{
 		public Vector3D<float>[] Vertices { get => vertices; set { vertices = value; regenerate = true; } }
-		public nuint[] Indices { get => indices; set { indices = value; regenerate = true; } }
+		public uint[] Indices { get => indices; set { indices = value; regenerate = true; } }
 		
 		private uint vao = 0, vbo = 0, ebo = 0;
 		private bool regenerate = true;
 
 		private Vector3D<float>[] vertices = [];
-		private nuint[] indices = [];
+		private uint[] indices = [];
 		private Vector3D<float>[] normals = [];
 
 		public void Clear()
@@ -50,12 +50,12 @@ namespace Nebulix.Rendering
 		/// Binds the necessary buffers and draws the mesh. Does not use any Shaders 
 		/// </summary>
 		/// <param name="gl"></param>
-		public void Render(GL gl)
+		public unsafe void Render(GL gl)
 		{
 			if (regenerate) Generate(gl);
 
 			gl.BindVertexArray(vao);
-			gl.DrawElements(PrimitiveType.Triangles, (uint)indices.Length, DrawElementsType.UnsignedInt, 0);
+			gl.DrawElements(PrimitiveType.Triangles, (uint)indices.Length, DrawElementsType.UnsignedInt, null);
 		}
 
 		private unsafe void Generate(GL gl)
@@ -71,16 +71,20 @@ namespace Nebulix.Rendering
 			if(ebo == 0) 
 				ebo = gl.GenBuffer();
 
-			List<float> meshData = new(vertices.Length * 3 + normals.Length * 3);
-			meshData.AddRange(vertices.ExtractComponents());
+			float[] meshData = new float[vertices.Length * 3 + normals.Length * 3];
+			vertices.ExtractComponents().CopyTo(meshData, 0);
 			//meshData.AddRange(normals.ExtractComponents());
-			ReadOnlySpan<float> data = new(meshData.ToArray());
 			gl.BindBuffer(BufferTargetARB.ArrayBuffer, vbo);
-			gl.BufferData(BufferTargetARB.ArrayBuffer, (nuint)(data.Length * sizeof(float)), data, BufferUsageARB.StaticDraw);
+			fixed(void* data = &meshData[0])
+			{
+				gl.BufferData(BufferTargetARB.ArrayBuffer, (nuint)(meshData.Length * 3 * sizeof(float)), data, BufferUsageARB.StaticDraw);
+			}
 
-			ReadOnlySpan<nuint> indicesData = new(indices);
 			gl.BindBuffer(BufferTargetARB.ElementArrayBuffer, ebo);
-			gl.BufferData(BufferTargetARB.ElementArrayBuffer, (nuint)(indicesData.Length * sizeof(nuint)), indicesData, BufferUsageARB.StaticDraw);
+			fixed(void* indicesData = &indices[0])
+			{
+				gl.BufferData(BufferTargetARB.ElementArrayBuffer, (nuint)(indices.Length * sizeof(uint)), indicesData, BufferUsageARB.StaticDraw);
+			}
 			
 			// vertices
 			gl.EnableVertexAttribArray(0);

src/Program.cs

@@ -32,7 +32,6 @@ public static class Program
 	private static Vector2 _lastMousePosition;
 	private static uint _vao, _vbo;
 	private static Sphere sphere;
-	private static Mesh testMesh;
 
 	public static void Main(string[] args)
 	{
@@ -144,24 +143,6 @@ public static class Program
 		sphere.CreateSphere();
 		_sphereShader =
 			new Nebulix.Rendering.Shader(_gl, "./Shaders/Sphere/sphere.vert", "./Shaders/Sphere/sphere.frag");
-
-		testMesh = new Mesh
-		{
-			Vertices =
-			[
-				new Vector3D<float>(0.5f, 0.5f, 0.0f),
-				new Vector3D<float>(0.5f, -0.5f, 0.0f),
-				new Vector3D<float>(-0.5f, -0.5f, 0.0f),
-				new Vector3D<float>(-0.5f, 0.5f, 0.5f)
-			],
-			Indices =
-			[
-				0u, 1u, 3u,
-				1u, 2u, 3u
-			]
-		};
-		testMesh.CalculateNormals();
-
 	}
 
 	private static void OnUpdate(double deltaTime)
@@ -190,7 +171,7 @@ public static class Program
 		}
 	}
 
-	private static void OnRender(double deltaTime)
+	private static unsafe void OnRender(double deltaTime)
 	{
 		_gl.Clear(ClearBufferMask.ColorBufferBit | ClearBufferMask.DepthBufferBit);
 
@@ -207,21 +188,18 @@ public static class Program
 		_shader.SetInt("tex", 0);
 		_texture.Bind();
 		
-		// _gl.BindVertexArray(_vao);
-		// _gl.DrawArrays(PrimitiveType.Triangles, 0, 36);
+		_gl.BindVertexArray(_vao);
+		_gl.DrawArrays(PrimitiveType.Triangles, 0, 36);
 
 		// Sphere
-		modelMatrix = Matrix4x4.CreateTranslation(0, 0, 0);
+		modelMatrix = Matrix4x4.CreateTranslation(1, 0, 0);
+		
 		_sphereShader.Use();
 		_sphereShader.SetMatrix("modelMatrix", modelMatrix);
 		_sphereShader.SetMatrix("projectionMatrix", projectionMatrix);
 		_sphereShader.SetMatrix("viewMatrix", viewMatrix);
 
-		// sphere.RenderSphere(_gl);
-		testMesh.Render(_gl);
-
-		// var f = new Face(-Vector3D<float>.UnitX, 10);
-		// f.GetMesh().Render(_gl);
+		sphere.RenderSphere(_gl);
 	}
 
 	private static void OnKeyDown(IKeyboard keyboard, Key key, int keyCode)

src/Shaders/Sphere/sphere.frag

@@ -1,6 +1,6 @@
 #version 330 core
 
-out vec4 colour;
+out vec4 FragColour;
 
 in vec3 FragPos;
 //in vec3 Normal;
@@ -8,8 +8,5 @@ in vec3 FragPos;
 void main()
 {
     vec3 col = vec3(1.0, 0.5, 0.2) * FragPos;
-    //vec3 col = texture(tex, TexCoords);
-    //colour = vec4(texture(tex, TexCoords).rgb, 1.0);
-//    colour = vec4(col, 1);
-    colour = vec4(1);
+    FragColour = vec4(col, 1);
 }

src/Sphere.cs

@@ -6,9 +6,19 @@ using Silk.NET.OpenGL;
 namespace Engine_silk.NET
 {
 	// also maybe make an ISphere and call this class "CubeSphere"?
-	public class Sphere(uint resolution)
+	public class Sphere
 	{
 		private readonly Face[] sphereFaces = new Face[6];
+		private readonly uint resolution;
+		
+		public Sphere(uint resolution)
+		{
+			if (resolution < 2)
+				throw new ArgumentOutOfRangeException(nameof(resolution), resolution,
+					"Resolution must be greater than 1");
+			this.resolution = resolution;
+		}
+
 		public void CreateSphere()
 		{
 			Vector3D<float>[] directions =
@@ -63,7 +73,7 @@ namespace Engine_silk.NET
 			var vertices = new Vector3D<float>[_resolution * _resolution];
 			// _resolution - 1 because the vertices index starts at 0 
 			// * 6 because each triangle needs 3 points and each small quad has 2 triangles 3*2 = 6
-			var indices = new nuint[(_resolution - 1) * (_resolution - 1) * 6];
+			var indices = new uint[(_resolution - 1) * (_resolution - 1) * 6];
 			int triangleIndex = 0;
 
 			uint i;