Fix calculation of inverted matrix

4 years ago · e446a66d6a
1 changed files with 2 additions and 2 deletions
--- a/src/Avalonia.Base/Matrix.cs
+++ b/src/Avalonia.Base/Matrix.cs
@ -450,13 +450,13 @@ namespace Avalonia
            
            inverted = new Matrix(
                (_m22 * _m33 - _m32 * _m23) * invdet,
-                (_m13 * _m31 - _m12 * _m33) * invdet,
+                (_m13 * _m32 - _m12 * _m33) * invdet,
                (_m12 * _m23 - _m13 * _m22) * invdet,
                (_m23 * _m31 - _m21 * _m33) * invdet,
                (_m11 * _m33 - _m13 * _m31) * invdet,
                (_m21 * _m13 - _m11 * _m23) * invdet,
                (_m21 * _m32 - _m31 * _m22) * invdet,
-                (_m21 * _m12 - _m11 * _m32) * invdet,
+                (_m31 * _m12 - _m11 * _m32) * invdet,
                (_m11 * _m22 - _m21 * _m12) * invdet
                );