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D3DXVec3Project Problem !!! LensFlare Effect

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Hi , in the case of an implementation of lens flare effect here is what a i'm doing : Position the Cam : Eye (0,0,1) At (0,0,10) Up (0,1,0) i've a point : SunPos D3DXVECTOR3(0,10,1) when i execute this code , i get wrong values in screen coord... D3DXMATRIX View,Proj; dev->GetTransform(D3DTS_VIEW,&View); dev->GetTransform(D3DTS_PROJECTION,&Proj); dev->GetViewport(&pViewport); D3DXMatrixTranslation(&World,Eye.x,Eye.y,Eye.z); dev->SetTransform(D3DTS_WORLD,&World); D3DXVec3Project(&Sun,&SunPos,&pViewport,&Proj,&View,&World); Sun is (394,-4586.92,-1.19209) wich can't be my screen coordinate. Please help me ! Best regards

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