good cam position + fixed depth mip mapping + trying to understand shit

FModel/App.xaml.cs

@@ -89,9 +89,13 @@ protected override void OnStartup(StartupEventArgs e)
  Directory.CreateDirectory(Path.Combine(UserSettings.Default.OutputDirectory, "Logs"));
  Directory.CreateDirectory(Path.Combine(UserSettings.Default.OutputDirectory, ".data"));
 
+#if DEBUG
+ Log.Logger = new LoggerConfiguration().WriteTo.Console(theme: AnsiConsoleTheme.Literate).CreateLogger();
+#else
  Log.Logger = new LoggerConfiguration().WriteTo.Console(theme: AnsiConsoleTheme.Literate).WriteTo.File(
  Path.Combine(UserSettings.Default.OutputDirectory, "Logs", $"FModel-Log-{DateTime.Now:yyyy-MM-dd}.txt"),
  outputTemplate: "{Timestamp:yyyy-MM-dd HH:mm:ss} [FModel] [{Level:u3}] {Message:lj}{NewLine}{Exception}").CreateLogger();
+#endif
 
  Log.Information("Version {Version}", Constants.APP_VERSION);
  Log.Information("{OS}", GetOperatingSystemProductName());

FModel/Constants.cs

@@ -9,6 +9,8 @@ public static class Constants
  public const string ZERO_64_CHAR = "0000000000000000000000000000000000000000000000000000000000000000";
  public static readonly FGuid ZERO_GUID = new(0U);
 
+ public const float SCALE_DOWN_RATIO = 0.01F;
+
  public const string WHITE = "#DAE5F2";
  public const string GRAY = "#BBBBBB";
  public const string RED = "#E06C75";

FModel/Helper.cs

@@ -105,4 +105,9 @@ public static float DegreesToRadians(float degrees)
  {
  return MathF.PI / 180f * degrees;
  }
+
+ public static float RadiansToDegrees(float radians)
+ {
+ return radians* 180f / MathF.PI;
+ }
 }

FModel/MainWindow.xaml.cs

@@ -79,7 +79,7 @@ private async void OnLoaded(object sender, RoutedEventArgs e)
 #if DEBUG
  await _threadWorkerView.Begin(_ =>
  _applicationView.CUE4Parse.Extract(
- "FortniteGame/Content/Environments/Props/Winter/Meshes/S_Sled.uasset"));
+ "/Game/Gadgets/Assets/VinderTech_GliderChute/Glider_Mark_II/Meshes/Glider_Mark_II.uasset"));
 #endif
  }
 

FModel/Views/Snooper/Camera.cs

@@ -6,22 +6,24 @@ namespace FModel.Views.Snooper;
 public class Camera
 {
  public Vector3 Position { get; set; }
- public Vector3 Front { get; set; }
-
- public Vector3 Up { get; private set; }
- public float AspectRatio { get; set; }
+ public Vector3 Direction { get; private set; }
+ public Vector3 Up = Vector3.UnitY;
 
+ public float AspectRatio { get; }
  public float Yaw { get; set; } = -90f;
  public float Pitch { get; set; }
+ public float Zoom = 45f;
 
- private float Zoom = 45f;
-
- public Camera(Vector3 position, Vector3 front, Vector3 up, float aspectRatio)
+ public Camera(Vector3 position, Vector3 direction, float aspectRatio = 16f / 9f)
  {
  Position = position;
+ Direction = direction;
  AspectRatio = aspectRatio;
- Front = front;
- Up = up;
+
+ // trigonometric math to calculate the cam's yaw/pitch based on position and direction to look
+ var yaw = MathF.Atan((-Position.X - Direction.X) / (Position.Z - Direction.Z));
+ var pitch = MathF.Atan((Position.Y - Direction.Y) / (Position.Z - Direction.Z));
+ ModifyDirection(Helper.RadiansToDegrees(yaw), Helper.RadiansToDegrees(pitch));
  }
 
  public void ModifyZoom(float zoomAmount)
@@ -38,21 +40,25 @@ public void ModifyDirection(float xOffset, float yOffset)
  //We don't want to be able to look behind us by going over our head or under our feet so make sure it stays within these bounds
  Pitch = Math.Clamp(Pitch, -89f, 89f);
 
- var cameraDirection = Vector3.Zero;
- cameraDirection.X = MathF.Cos(Helper.DegreesToRadians(Yaw)) * MathF.Cos(Helper.DegreesToRadians(Pitch));
- cameraDirection.Y = MathF.Sin(Helper.DegreesToRadians(Pitch));
- cameraDirection.Z = MathF.Sin(Helper.DegreesToRadians(Yaw)) * MathF.Cos(Helper.DegreesToRadians(Pitch));
-
- Front = Vector3.Normalize(cameraDirection);
+ Direction = Vector3.Normalize(CalculateDirection());
  }
 
  public Matrix4x4 GetViewMatrix()
  {
- return Matrix4x4.CreateLookAt(Position, Position + Front, Up);
+ return Matrix4x4.CreateLookAt(Position, Position + Direction, Up);
  }
 
  public Matrix4x4 GetProjectionMatrix()
  {
  return Matrix4x4.CreatePerspectiveFieldOfView(Helper.DegreesToRadians(Zoom), AspectRatio, 0.1f, 100.0f);
  }
+
+ private Vector3 CalculateDirection()
+ {
+ var direction = Vector3.Zero;
+ direction.X = MathF.Cos(Helper.DegreesToRadians(Yaw)) * MathF.Cos(Helper.DegreesToRadians(Pitch));
+ direction.Y = MathF.Sin(Helper.DegreesToRadians(Pitch));
+ direction.Z = MathF.Sin(Helper.DegreesToRadians(Yaw)) * MathF.Cos(Helper.DegreesToRadians(Pitch));
+ return direction;
+ }
 }

FModel/Views/Snooper/Mesh.cs

@@ -0,0 +1,128 @@
+using System;
+using System.Linq;
+using System.Numerics;
+using CUE4Parse.UE4.Assets.Exports.Material;
+using CUE4Parse.UE4.Assets.Exports.Texture;
+using CUE4Parse_Conversion.Meshes.PSK;
+using CUE4Parse_Conversion.Textures;
+using Silk.NET.OpenGL;
+
+namespace FModel.Views.Snooper;
+
+public class Mesh : IDisposable
+{
+ private uint _handle;
+ private GL _gl;
+
+ private BufferObject<uint> _ebo;
+ private BufferObject<float> _vbo;
+ private VertexArrayObject<float, uint> _vao;
+
+ private Shader _shader;
+ private Texture[] _albedoMap;
+ // private Texture _normalMap;
+
+ private const int _vertexSize = 8; // Position + Normals + UV
+ private const uint _faceSize = 3; // just so we don't have to do .Length
+ private readonly uint[] _facesIndex = { 1, 0, 2 };
+
+ public uint[] Indices;
+ public float[] Vertices;
+ public CMaterialParams[] Params;
+
+ public Mesh(CBaseMeshLod lod, CMeshVertex[] vertices)
+ {
+ var sections = lod.Sections.Value;
+ Params = new CMaterialParams[sections.Length];
+ Indices = new uint[sections.Sum(section => section.NumFaces * _faceSize)];
+ Vertices = new float[Indices.Length * _vertexSize];
+
+ for (var s = 0; s < sections.Length; s++)
+ {
+ var section = sections[s];
+ for (uint face = 0; face < section.NumFaces; face++)
+ {
+ foreach (var f in _facesIndex)
+ {
+ var i = face * _faceSize + f;
+ var index = section.FirstIndex + i;
+ var indice = lod.Indices.Value[index];
+
+ var vert = vertices[indice];
+ Vertices[index * _vertexSize] = vert.Position.X * Constants.SCALE_DOWN_RATIO;
+ Vertices[index * _vertexSize + 1] = vert.Position.Z * Constants.SCALE_DOWN_RATIO;
+ Vertices[index * _vertexSize + 2] = vert.Position.Y * Constants.SCALE_DOWN_RATIO;
+ Vertices[index * _vertexSize + 3] = vert.Normal.X;
+ Vertices[index * _vertexSize + 4] = vert.Normal.Z;
+ Vertices[index * _vertexSize + 5] = vert.Normal.Y;
+ Vertices[index * _vertexSize + 6] = vert.UV.U;
+ Vertices[index * _vertexSize + 7] = vert.UV.V;
+
+ Indices[index] = (uint) index;
+ }
+ }
+
+ Params[s] = new CMaterialParams();
+ if (section.Material != null && section.Material.TryLoad(out var material) && material is UMaterialInterface unrealMaterial)
+ {
+ unrealMaterial.GetParams(Params[s]);
+ }
+ }
+ }
+
+ public void Setup(GL gl)
+ {
+ _gl = gl;
+
+ _handle = _gl.CreateProgram();
+
+ _ebo = new BufferObject<uint>(_gl, Indices, BufferTargetARB.ElementArrayBuffer);
+ _vbo = new BufferObject<float>(_gl, Vertices, BufferTargetARB.ArrayBuffer);
+ _vao = new VertexArrayObject<float, uint>(_gl, _vbo, _ebo);
+
+ _vao.VertexAttributePointer(0, 3, VertexAttribPointerType.Float, _vertexSize, 0); // position
+ _vao.VertexAttributePointer(1, 3, VertexAttribPointerType.Float, _vertexSize, 3); // normals
+ _vao.VertexAttributePointer(2, 2, VertexAttribPointerType.Float, _vertexSize, 6); // uv
+
+ _shader = new Shader(_gl);
+
+ _albedoMap = new Texture[Params.Length];
+ for (int i = 0; i < _albedoMap.Length; i++)
+ {
+ if (Params[i].Diffuse is UTexture2D { IsVirtual: false } diffuse && diffuse.GetFirstMip() is { } mip)
+ {
+ TextureDecoder.DecodeTexture(mip, diffuse.Format, diffuse.isNormalMap, out var data, out _);
+ _albedoMap[i] = new Texture(_gl, data, (uint) mip.SizeX, (uint) mip.SizeY);
+ }
+ }
+ }
+
+ public unsafe void Bind(Camera camera)
+ {
+ _vao.Bind();
+
+ _shader.Use();
+
+ _shader.SetUniform("uModel", Matrix4x4.Identity);
+ _shader.SetUniform("uView", camera.GetViewMatrix());
+ _shader.SetUniform("uProjection", camera.GetProjectionMatrix());
+ // _shader.SetUniform("viewPos", _camera.Position);
+
+ for (int i = 0; i < _albedoMap.Length; i++)
+ {
+ _shader.SetUniform("material.albedo", i);
+ _albedoMap[i].Bind(TextureUnit.Texture0 + i);
+ }
+
+ _gl.DrawElements(PrimitiveType.Triangles, (uint) Indices.Length, DrawElementsType.UnsignedInt, null);
+ }
+
+ public void Dispose()
+ {
+ _ebo.Dispose();
+ _vbo.Dispose();
+ _vao.Dispose();
+ _shader.Dispose();
+ _gl.DeleteProgram(_handle);
+ }
+}

FModel/Views/Snooper/Shader.cs

@@ -48,7 +48,6 @@ struct Material {
 };
 
 uniform Material material;
-uniform vec3 viewPos;
 
 out vec4 FragColor;