[PATCH] Implement D3DXMatrixOrthoLH with a test

[David Adam]

---
 dlls/d3dx8/d3dx8.spec   |    2 +-
 dlls/d3dx8/math.c       |   10 ++++++++++
 dlls/d3dx8/tests/math.c |    6 ++++++
 include/d3dx8math.h     |    1 +
 4 files changed, 18 insertions(+), 1 deletions(-)

diff --git a/dlls/d3dx8/d3dx8.spec b/dlls/d3dx8/d3dx8.spec
index 8621e60..14500af 100644
--- a/dlls/d3dx8/d3dx8.spec
+++ b/dlls/d3dx8/d3dx8.spec
@@ -43,7 +43,7 @@
 @ stdcall D3DXMatrixPerspectiveOffCenterRH(ptr long long long long long lon=
g)
 @ stdcall D3DXMatrixPerspectiveOffCenterLH(ptr long long long long long lon=
g)
 @ stdcall D3DXMatrixOrthoRH(ptr long long long long)
-@ stub D3DXMatrixOrthoLH
+@ stdcall D3DXMatrixOrthoLH(ptr long long long long)
 @ stub D3DXMatrixOrthoOffCenterRH
 @ stub D3DXMatrixOrthoOffCenterLH
 @ stub D3DXMatrixShadow
diff --git a/dlls/d3dx8/math.c b/dlls/d3dx8/math.c
index ef38f0b..7070895 100644
--- a/dlls/d3dx8/math.c
+++ b/dlls/d3dx8/math.c
@@ -116,6 +116,16 @@ D3DXMATRIX* WINAPI D3DXMatrixMultiply(D3DXMATRIX *pout,=
 CONST D3DXMATRIX *pm1, C
     return pout;
 }
=20
+D3DXMATRIX* WINAPI D3DXMatrixOrthoLH(D3DXMATRIX *pout, FLOAT w, FLOAT h, FL=
OAT zn, FLOAT zf)
+{
+    D3DXMatrixIdentity(pout);
+    pout->m[0][0] =3D 2.0f / w;
+    pout->m[1][1] =3D 2.0f / h;
+    pout->m[2][2] =3D 1.0f / (zf - zn);
+    pout->m[3][2] =3D zn / (zn - zf);
+    return pout;
+}
+
 D3DXMATRIX* WINAPI D3DXMatrixOrthoRH(D3DXMATRIX *pout, FLOAT w, FLOAT h, FL=
OAT zn, FLOAT zf)
 {
     D3DXMatrixIdentity(pout);
diff --git a/dlls/d3dx8/tests/math.c b/dlls/d3dx8/tests/math.c
index ba285f2..f84426d 100644
--- a/dlls/d3dx8/tests/math.c
+++ b/dlls/d3dx8/tests/math.c
@@ -222,6 +222,12 @@ static void D3DXMatrixTest(void)
     D3DXMatrixMultiply(&gotmat,&mat,&mat2);
     expect_mat(expectedmat,gotmat);
=20
+/*____________D3DXMatrixOrthoLH_______________*/
+    D3DXMatrixIdentity(&expectedmat);
+    expectedmat.m[0][0] =3D 0.8f; expectedmat.m[1][1] =3D 0.270270f; expect=
edmat.m[2][2] =3D -0.151515f; expectedmat.m[3][2] =3D -0.484848f;
+    D3DXMatrixOrthoLH(&gotmat, 2.5f, 7.4f, -3.2f, -9.8f);
+    expect_mat(expectedmat,gotmat);
+
 /*____________D3DXMatrixOrthoRH_______________*/
     D3DXMatrixIdentity(&expectedmat);
     expectedmat.m[0][0] =3D 0.8f; expectedmat.m[1][1] =3D 0.270270f; expect=
edmat.m[2][2] =3D 0.151515f; expectedmat.m[3][2] =3D -0.484848f;
diff --git a/include/d3dx8math.h b/include/d3dx8math.h
index 59389d2..f17fd5c 100644
--- a/include/d3dx8math.h
+++ b/include/d3dx8math.h
@@ -62,6 +62,7 @@ FLOAT WINAPI D3DXMatrixfDeterminant(CONST D3DXMATRIX *pm);
 D3DXMATRIX* WINAPI D3DXMatrixLookAtLH(D3DXMATRIX *pout, CONST D3DXVECTOR3 *=
peye, CONST D3DXVECTOR3 *pat, CONST D3DXVECTOR3 *pup);
 D3DXMATRIX* WINAPI D3DXMatrixLookAtRH(D3DXMATRIX *pout, CONST D3DXVECTOR3 *=
peye, CONST D3DXVECTOR3 *pat, CONST D3DXVECTOR3 *pup);
 D3DXMATRIX* WINAPI D3DXMatrixMultiply(D3DXMATRIX *pout, CONST D3DXMATRIX *p=
m1, CONST D3DXMATRIX *pm2);
+D3DXMATRIX* WINAPI D3DXMatrixOrthoLH(D3DXMATRIX *pout, FLOAT w, FLOAT h, FL=
OAT zn, FLOAT zf);
 D3DXMATRIX* WINAPI D3DXMatrixOrthoRH(D3DXMATRIX *pout, FLOAT w, FLOAT h, FL=
OAT zn, FLOAT zf);
 D3DXMATRIX* WINAPI D3DXMatrixPerspectiveFovLH(D3DXMATRIX *pout, FLOAT fovy,=
 FLOAT aspect, FLOAT zn, FLOAT zf);
 D3DXMATRIX* WINAPI D3DXMatrixPerspectiveFovRH(D3DXMATRIX *pout, FLOAT fovy,=
 FLOAT aspect, FLOAT zn, FLOAT zf);
--=20
1.5.3.2


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