Nozomi Kodama : d3dx9: Avoid useless computations.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: de852879d1c9c3678307bb94ed2dda4b3a6d66fd
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=de852879d1c9c3678307bb94ed2dda4b3a6d66fd

Author: Nozomi Kodama <nozomi.kodama at yahoo.com>
Date:   Fri Feb 15 23:04:25 2013 -1000

d3dx9: Avoid useless computations.

---

 dlls/d3dx9_36/math.c |   10 ++++++++--
 1 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/dlls/d3dx9_36/math.c b/dlls/d3dx9_36/math.c
index 10623f7..69c3297 100644
--- a/dlls/d3dx9_36/math.c
+++ b/dlls/d3dx9_36/math.c
@@ -388,10 +388,16 @@ D3DXMATRIX* WINAPI D3DXMatrixMultiply(D3DXMATRIX *pout, const D3DXMATRIX *pm1, c
 
 D3DXMATRIX* WINAPI D3DXMatrixMultiplyTranspose(D3DXMATRIX *pout, const D3DXMATRIX *pm1, const D3DXMATRIX *pm2)
 {
+    D3DXMATRIX temp;
+    int i, j;
+
     TRACE("pout %p, pm1 %p, pm2 %p\n", pout, pm1, pm2);
 
-    D3DXMatrixMultiply(pout, pm1, pm2);
-    D3DXMatrixTranspose(pout, pout);
+    for (i = 0; i < 4; i++)
+        for (j = 0; j < 4; j++)
+            temp.u.m[j][i] = pm1->u.m[i][0] * pm2->u.m[0][j] + pm1->u.m[i][1] * pm2->u.m[1][j] + pm1->u.m[i][2] * pm2->u.m[2][j] + pm1->u.m[i][3] * pm2->u.m[3][j];
+
+    *pout = temp;
     return pout;
 }