daily update on 20241226 by nitload youmu

内核源代码/StgSharp/Math/Linear/Matrix43.cs

@@ -35,11 +35,12 @@ using System.Collections.Generic;
 using System.Numerics;
 using System.Runtime.CompilerServices;
 using System.Runtime.InteropServices;
+using System.Security.AccessControl;
 
 namespace StgSharp.Math
 {
     [StructLayout(
-        LayoutKind.Explicit,
+        layoutKind: LayoutKind.Explicit,
         Size = ( 7 * 4 * sizeof( float ) ) + sizeof( bool ),
         Pack = 16 )]
     public struct Matrix43 : IEquatable<Matrix43>, IMat
@@ -50,12 +51,19 @@ namespace StgSharp.Math
 
         [FieldOffset( 0 )]
         internal ColumnSet3 mat;
-
         [FieldOffset( 3 * 4 * sizeof( float ) )]
         internal ColumnSet4 transpose;
 
+        public Matrix43()
+        {
+            Unsafe.SkipInit(out this);
+            isTransposed = false;
+        }
+
         internal Matrix43( Vector4 c0, Vector4 c1, Vector4 c2 )
         {
+            Unsafe.SkipInit(out this);
+            isTransposed = false;
             mat.colum0 = c0;
             mat.colum1 = c1;
             mat.colum2 = c2;
@@ -75,6 +83,8 @@ namespace StgSharp.Math
             float a31,
             float a32 )
         {
+            Unsafe.SkipInit(out this);
+            isTransposed = false;
             mat.colum0 = new Vector4( a00, a10, a20, a30 );
             mat.colum1 = new Vector4( a01, a11, a21, a31 );
             mat.colum2 = new Vector4( a02, a12, a22, a32 );
@@ -135,12 +145,10 @@ namespace StgSharp.Math
         internal unsafe void InternalTranspose()
         {
             if( !isTransposed ) {
-                fixed( ColumnSet3* source = &this.mat ) {
-                    fixed( ColumnSet4* target = &this.transpose ) {
-                        InternalIO.Intrinsic.transpose34( source, target );
-                    }
+                fixed( ColumnSet3* source = &this.mat )
+                fixed( ColumnSet4* target = &this.transpose ) {
+                    InternalIO.Intrinsic.transpose34( source, target );
                 }
-
                 isTransposed = true;
             }
         }
@@ -160,7 +168,7 @@ namespace StgSharp.Math
         }
 
         [MethodImpl( MethodImplOptions.AggressiveInlining )]
-        public static Matrix43 operator *( Matrix43 mat, float value )
+        public static unsafe Matrix43 operator *( Matrix43 mat, float value )
         {
             return new Matrix43(
                 mat.mat.colum0 * value, mat.mat.colum1 * value,
@@ -242,12 +250,11 @@ namespace StgSharp.Math
         }
 
         [MethodImpl( MethodImplOptions.AggressiveInlining )]
-        public static Matrix43 operator +( Matrix43 left, Matrix43 right )
+        public static unsafe Matrix43 operator +( Matrix43 left, Matrix43 right )
         {
-            return new Matrix43(
-                left.mat.colum0 + right.mat.colum0,
-                left.mat.colum1 + right.mat.colum1,
-                left.mat.colum2 + right.mat.colum2 );
+            Matrix43 ret = new Matrix43();
+            InternalIO.Intrinsic.add_mat_3(&left.mat, &right.mat, &ret.mat);
+            return ret;
         }
 
         public static bool operator ==( Matrix43 left, Matrix43 right )