using StgSharp.Math;
using StgSharp.StgSharp.Math;
using System;
using System.Numerics;
using System.Runtime.InteropServices;

namespace StgSharp
{
    internal static unsafe partial class internalIO
    {


        #region transpose

        [DllImport("StgsharpGraphic", EntryPoint = "transpose3to4",
            CallingConvention = CallingConvention.Cdecl)]
        internal static extern unsafe void Transpose3to4_internal(Mat3* source, Mat4* target);

        [DllImport("StgsharpGra[hic", EntryPoint = "transpose3to4",
            CallingConvention = CallingConvention.Cdecl)]
        internal static extern unsafe void Transpose3to3_internal(Mat3* source, Mat3* target);
        
        [DllImport("StgsharpGra[hic", EntryPoint = "transpose3to2",
            CallingConvention = CallingConvention.Cdecl)]
        internal static extern unsafe void Transpose3to2_internal(Mat3* source, Mat2* target);
        
        #endregion

    }

}


namespace StgSharp.Math
{
    [StructLayout(LayoutKind.Explicit, Size = 12 * sizeof(float), Pack = 16)]
    internal struct Mat3
    {

        [FieldOffset(0)] internal Vector4 colum0;
        [FieldOffset(4 * sizeof(float))] internal Vector4 colum1;
        [FieldOffset(8 * sizeof(float))] internal Vector4 colum2;

        [FieldOffset(0 * sizeof(float))] internal float m00;
        [FieldOffset(1 * sizeof(float))] internal float m10;
        [FieldOffset(2 * sizeof(float))] internal float m20;
        [FieldOffset(3 * sizeof(float))] internal float m30;

        [FieldOffset(4 * sizeof(float))] internal float m01;
        [FieldOffset(5 * sizeof(float))] internal float m11;
        [FieldOffset(6 * sizeof(float))] internal float m21;
        [FieldOffset(7 * sizeof(float))] internal float m31;

        [FieldOffset(8 * sizeof(float))] internal float m02;
        [FieldOffset(9 * sizeof(float))] internal float m12;
        [FieldOffset(10 * sizeof(float))] internal float m22;
        [FieldOffset(11 * sizeof(float))] internal float m32;

    }