David Adam : d3dx9: Fix D3DXVec2TransformCoord to make tests pass in Windows.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: e37aff31b460fde0219a75d5057f8db91fd2e0a6
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=e37aff31b460fde0219a75d5057f8db91fd2e0a6

Author: David Adam <david.adam.cnrs at gmail.com>
Date:   Fri Jul 17 18:14:32 2009 +0200

d3dx9: Fix D3DXVec2TransformCoord to make tests pass in Windows.

---

 dlls/d3dx9_36/math.c       |   17 ++++++-----------
 dlls/d3dx9_36/tests/math.c |    7 +------
 2 files changed, 7 insertions(+), 17 deletions(-)

diff --git a/dlls/d3dx9_36/math.c b/dlls/d3dx9_36/math.c
index 30f7ec9..31078e5 100644
--- a/dlls/d3dx9_36/math.c
+++ b/dlls/d3dx9_36/math.c
@@ -1440,20 +1440,15 @@ D3DXVECTOR4* WINAPI D3DXVec2TransformArray(D3DXVECTOR4* out, UINT outstride, CON
 
 D3DXVECTOR2* WINAPI D3DXVec2TransformCoord(D3DXVECTOR2 *pout, CONST D3DXVECTOR2 *pv, CONST D3DXMATRIX *pm)
 {
+    D3DXVECTOR2 v;
     FLOAT norm;
 
+    v = *pv;
     norm = pm->u.m[0][3] * pv->x + pm->u.m[1][3] * pv->y + pm->u.m[3][3];
-    if ( norm )
-    {
-     CONST D3DXVECTOR2 v = *pv;
-     pout->x = (pm->u.m[0][0] * v.x + pm->u.m[1][0] * v.y + pm->u.m[3][0]) / norm;
-     pout->y = (pm->u.m[0][1] * v.x + pm->u.m[1][1] * v.y + pm->u.m[3][1]) / norm;
-    }
-    else
-    {
-     pout->x = 0.0f;
-     pout->y = 0.0f;
-    }
+
+    pout->x = (pm->u.m[0][0] * v.x + pm->u.m[1][0] * v.y + pm->u.m[3][0]) / norm;
+    pout->y = (pm->u.m[0][1] * v.x + pm->u.m[1][1] * v.y + pm->u.m[3][1]) / norm;
+
     return pout;
 }
 
diff --git a/dlls/d3dx9_36/tests/math.c b/dlls/d3dx9_36/tests/math.c
index 6e9f25d..8879e1c 100644
--- a/dlls/d3dx9_36/tests/math.c
+++ b/dlls/d3dx9_36/tests/math.c
@@ -950,7 +950,7 @@ static void D3DXQuaternionTest(void)
 
 static void D3DXVector2Test(void)
 {
-    D3DXVECTOR2 expectedvec, gotvec, nul, nulproj, u, v, w, x;
+    D3DXVECTOR2 expectedvec, gotvec, nul, u, v, w, x;
     LPD3DXVECTOR2 funcpointer;
     D3DXVECTOR4 expectedtrans, gottrans;
     D3DXMATRIX mat;
@@ -1105,11 +1105,6 @@ static void D3DXVector2Test(void)
     expectedvec.x = 0.6f; expectedvec.y = 11.0f/15.0f;
     D3DXVec2TransformCoord(&gotvec,&u,&mat);
     expect_vec(expectedvec,gotvec);
-    /* Test the nul projected vector */
-    nulproj.x = -2.0f; nulproj.y = -1.0f;
-    expectedvec.x = 0.0f; expectedvec.y = 0.0f;
-    D3DXVec2TransformCoord(&gotvec,&nulproj,&mat);
-    expect_vec(expectedvec,gotvec);
 
  /*_______________D3DXVec2TransformNormal______________________*/
     expectedvec.x = 23.0f; expectedvec.y = 30.0f;