单项选择题
A.世界变换矩阵B.视图变换矩阵C.投影变换矩阵D.视口变换矩阵
A.D3DXCreateFont()B.CreateFont()C.DrawText()D.GetStockObject()
A.SetRenderState(D3DRS_FOGVERTEXMODE,D3DFOG_LINEAR);B.SetRenderState(D3DRS_FOGDENSITY,;C.SetRenderState(D3DRS_FOGCOLOR,0xffffffff);D.SetRenderState(D3DRS_RANGEFOGENABLE,TRUE);