Implement D3DXMatrixInverse in the means of XMMatrixInverse

CookiePLMonster · Jul 19, 2020 · 45aa4b1 · 45aa4b1
1 parent 8b6b181
commit 45aa4b1
Showing 1 changed file with 19 additions and 0 deletions.
diff --git a/source/D3DXMatrix.cpp b/source/D3DXMatrix.cpp
@@ -0,0 +1,19 @@
+#include <d3dx9.h>
+#include <DirectXMath.h>
+
+// D3DX Matrix functions implemented in the means of DirectXMath
+
+using namespace DirectX;
+
+D3DXMATRIX* WINAPI D3DXMatrixInverse_XM(D3DXMATRIX *pOut, FLOAT *pDeterminant, CONST D3DXMATRIX *pM)
+{
+	XMVECTOR determinant;
+	const XMMATRIX out = XMMatrixInverse(&determinant, XMMATRIX(static_cast<const float*>(*pM)));
+
+	*pOut = *reinterpret_cast<const D3DXMATRIX*>(&out);
+	if (pDeterminant != nullptr)
+	{
+		*pDeterminant = XMVectorGetX(determinant);
+	}
+	return pOut;
+}