d3dx8: Implement D3DX*Scale.

dlls/d3dx8/tests/math.c

@@ -263,6 +263,16 @@ static void D3X8Vector3Test(void)
     funcpointer = D3DXVec3Minimize(NULL,NULL,NULL);
     ok(funcpointer == NULL, "Expected: %p, Got: %p\n", NULL, funcpointer);
 
+/*_______________D3DXVec3Scale____________________________*/
+    expectedvec.x = -58.5f; expectedvec.y = -39.0f; expectedvec.z = -13.0f;
+    D3DXVec3Scale(&gotvec,&u,scale);
+    expect_vec3(expectedvec,gotvec);
+    /* Tests the case NULL */
+    funcpointer = D3DXVec3Scale(&gotvec,NULL,scale);
+    ok(funcpointer == NULL, "Expected: %p, Got: %p\n", NULL, funcpointer);
+    funcpointer = D3DXVec3Scale(NULL,NULL,scale);
+    ok(funcpointer == NULL, "Expected: %p, Got: %p\n", NULL, funcpointer);
+
 /*_______________D3DXVec3Subtract_______________________*/
     expectedvec.x = 7.0f; expectedvec.y = 9.0f; expectedvec.z = 6.0f;
     D3DXVec3Subtract(&gotvec,&u,&v);
@@ -355,6 +365,16 @@ static void D3X8Vector4Test(void)
     funcpointer = D3DXVec4Minimize(NULL,NULL,NULL);
     ok(funcpointer == NULL, "Expected: %p, Got: %p\n", NULL, funcpointer);
 
+/*_______________D3DXVec4Scale____________________________*/
+    expectedvec.x = -6.5f; expectedvec.y = -13.0f; expectedvec.z = -26.0f; expectedvec.w = -65.0f;
+    D3DXVec4Scale(&gotvec,&u,scale);
+    expect_vec4(expectedvec,gotvec);
+    /* Tests the case NULL */
+    funcpointer = D3DXVec4Scale(&gotvec,NULL,scale);
+    ok(funcpointer == NULL, "Expected: %p, Got: %p\n", NULL, funcpointer);
+    funcpointer = D3DXVec4Scale(NULL,NULL,scale);
+    ok(funcpointer == NULL, "Expected: %p, Got: %p\n", NULL, funcpointer);
+
 /*_______________D3DXVec4Subtract__________________________*/
     expectedvec.x = 4.0f; expectedvec.y = -2.0f; expectedvec.z = 9.0f; expectedvec.w = 3.0f;
     D3DXVec4Subtract(&gotvec,&u,&v);

include/d3dx8math.inl

@@ -149,6 +149,15 @@ static inline D3DXVECTOR3* D3DXVec3Minimize(D3DXVECTOR3 *pout, CONST D3DXVECTOR3
     return pout;
 }
 
+static inline D3DXVECTOR3* D3DXVec3Scale(D3DXVECTOR3 *pout, CONST D3DXVECTOR3 *pv, FLOAT s)
+{
+    if ( !pout || !pv) return NULL;
+    pout->x = s * (pv->x);
+    pout->y = s * (pv->y);
+    pout->z = s * (pv->z);
+    return pout;
+}
+
 static inline D3DXVECTOR3* D3DXVec3Subtract(D3DXVECTOR3 *pout, CONST D3DXVECTOR3 *pv1, CONST D3DXVECTOR3 *pv2)
 {
     if ( !pout || !pv1 || !pv2) return NULL;
@@ -218,6 +227,16 @@ static inline D3DXVECTOR4* D3DXVec4Minimize(D3DXVECTOR4 *pout, CONST D3DXVECTOR4
     return pout;
 }
 
+static inline D3DXVECTOR4* D3DXVec4Scale(D3DXVECTOR4 *pout, CONST D3DXVECTOR4 *pv, FLOAT s)
+{
+    if ( !pout || !pv) return NULL;
+    pout->x = s * (pv->x);
+    pout->y = s * (pv->y);
+    pout->z = s * (pv->z);
+    pout->w = s * (pv->w);
+    return pout;
+}
+
 static inline D3DXVECTOR4* D3DXVec4Subtract(D3DXVECTOR4 *pout, CONST D3DXVECTOR4 *pv1, CONST D3DXVECTOR4 *pv2)
 {
     if ( !pout || !pv1 || !pv2) return NULL;