[osg-users] help, camera-> attach(COLOR_BUFFER, cubemap, miplevel, face, true), error

[OpenSceneGraph Users]

Hello:
    I want to create a cubemap with mipmap by rtt camera, and I use the code as:
   camera-> attach(COLOR_BUFFER, cubemap, miplevel, face, true),
   when the miplevel increase, the camera's viewport width and height  /2
   finial I found the all result of different reslution image overlying together, the image of next level in the corner of the current level.
   What can I do , I want to get correct result
   Thank you
Yang Shixing
2020/5/11
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