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d3dx9: Cleanup D3DXVec3Unproject() implementation a bit. 

Signed-off-by: Matteo Bruni <mbruni@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Matteo Bruni 2018-03-14 19:53:19 +01:00 committed by Alexandre Julliard
parent 972dc565ed
commit 6dc78d5c27
1 changed files with 18 additions and 12 deletions
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30
dlls/d3dx9_36/math.c
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@ -1987,27 +1987,33 @@ D3DXVECTOR3* WINAPI D3DXVec3TransformNormalArray(D3DXVECTOR3* out, UINT outstrid
return out;
}
D3DXVECTOR3* WINAPI D3DXVec3Unproject(D3DXVECTOR3 *pout, const D3DXVECTOR3 *pv, const D3DVIEWPORT9 *pviewport, const D3DXMATRIX *pprojection, const D3DXMATRIX *pview, const D3DXMATRIX *pworld)
D3DXVECTOR3 * WINAPI D3DXVec3Unproject(D3DXVECTOR3 *out, const D3DXVECTOR3 *v,
const D3DVIEWPORT9 *viewport, const D3DXMATRIX *projection, const D3DXMATRIX *view,
const D3DXMATRIX *world)
{
D3DXMATRIX m;
TRACE("pout %p, pv %p, pviewport %p, pprojection %p, pview %p, pworlds %p\n", pout, pv, pviewport, pprojection, pview, pworld);
TRACE("out %p, v %p, viewport %p, projection %p, view %p, world %p.\n",
out, v, viewport, projection, view, world);
D3DXMatrixIdentity(&m);
if (pworld) D3DXMatrixMultiply(&m, &m, pworld);
if (pview) D3DXMatrixMultiply(&m, &m, pview);
if (pprojection) D3DXMatrixMultiply(&m, &m, pprojection);
if (world)
D3DXMatrixMultiply(&m, &m, world);
if (view)
D3DXMatrixMultiply(&m, &m, view);
if (projection)
D3DXMatrixMultiply(&m, &m, projection);
D3DXMatrixInverse(&m, NULL, &m);
*pout = *pv;
if (pviewport)
*out = *v;
if (viewport)
{
pout->x = 2.0f * ( pout->x - pviewport->X ) / pviewport->Width - 1.0f;
pout->y = 1.0f - 2.0f * ( pout->y - pviewport->Y ) / pviewport->Height;
pout->z = ( pout->z - pviewport->MinZ) / ( pviewport->MaxZ - pviewport->MinZ );
out->x = 2.0f * (out->x - viewport->X) / viewport->Width - 1.0f;
out->y = 1.0f - 2.0f * (out->y - viewport->Y) / viewport->Height;
out->z = (out->z - viewport->MinZ) / (viewport->MaxZ - viewport->MinZ);
}
D3DXVec3TransformCoord(pout, pout, &m);
return pout;
D3DXVec3TransformCoord(out, out, &m);
return out;
}
D3DXVECTOR3* WINAPI D3DXVec3UnprojectArray(D3DXVECTOR3* out, UINT outstride, const D3DXVECTOR3* in, UINT instride, const D3DVIEWPORT9* viewport, const D3DXMATRIX* projection, const D3DXMATRIX* view, const D3DXMATRIX* world, UINT elements)