daily update on 20230829 by nitload youmu

源代码/StgSharp/Math/Linear/mat2.cs

@@ -1,8 +1,8 @@
 using StgSharp.Math;
 using System;
+using System.Numerics;
 using System.Runtime.CompilerServices;
 using System.Runtime.InteropServices;
-using System.Security.Cryptography;
 
 namespace StgSharp
 {
@@ -36,6 +36,11 @@ namespace StgSharp
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
         internal static extern unsafe void Transpose2to4_internal(Mat2* source, Mat4* target);
 
+        [DllImport("StgsharpGraphic", EntryPoint = "transmpose2to3",
+            CallingConvention = CallingConvention.Cdecl)]
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        internal static extern unsafe void Transpose2to3_internal(Mat2* source, Mat3* target);
+
         #endregion
 
         #region deinit mat2
@@ -56,8 +61,8 @@ namespace StgSharp.Math
     internal struct Mat2
     {
 
-        [FieldOffset(0)] internal M128 colum0;
-        [FieldOffset(4 * sizeof(float))] internal M128 colum1;
+        [FieldOffset(0)] internal Vector4 colum0;
+        [FieldOffset(4 * sizeof(float))] internal Vector4 colum1;
 
         [FieldOffset(0 * sizeof(float))] internal float m00;
         [FieldOffset(1 * sizeof(float))] internal float m10;
@@ -69,5 +74,31 @@ namespace StgSharp.Math
         [FieldOffset(6 * sizeof(float))] internal float m21;
         [FieldOffset(7 * sizeof(float))] internal float m31;
 
+        internal Mat2(
+            Vector4 c0,
+            Vector4 c1
+            )
+        {
+            colum0 = c0;
+            colum1 = c1;
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        internal static Mat2 Add(Mat2 left, Mat2 right)
+        {
+            return new Mat2(
+                left.colum0 + right.colum0,
+                left.colum1 + right.colum1
+                );
+        }
+
+        [MethodImpl(MethodImplOptions.AggressiveInlining)]
+        internal static Mat2 Sub(Mat2 left, Mat2 right)
+        {
+            return new Mat2(
+                left.colum0 - right.colum0,
+                left.colum1 - right.colum1
+                );
+        }
     }
 }