using System.Runtime.InteropServices;

namespace T3.Core.Rendering;

[StructLayout(LayoutKind.Explicit, Size = Stride)]
public struct PbrVertex
{
    [FieldOffset(0)]
    public Vector3 Position;

    [FieldOffset(3 * 4)]
    public Vector3 Normal;

    [FieldOffset(6 * 4)]
    public Vector3 Tangent;

    [FieldOffset(9 * 4)]
    public Vector3 Bitangent;

    [FieldOffset(12 * 4)]
    public Vector2 Texcoord;

    [FieldOffset(14 * 4)]
    public Vector2 Texcoord2; 

    [FieldOffset(16 * 4)]
    public float Selection;

    [FieldOffset(17 * 4)]
    public Vector3 ColorRgb;

    public const int Stride = 20 * 4; // Total size: 20 floats -> 80 bytes
}