Hi Robert and J-S, Thanks for your reply. Yes, the DDS format is a good solution to control the mip mapping. But now since my texture is JPEG, it seems that I have to let OSG generate mipmaps.
I find that the default filtering mode is LINEAR_MIPMAP_LINEAR for MIN_FILTER. I tried some other filtering modes like LINEAR, and the texture performance becomes better in far distance. The texture, however, doesn't look very stable and is kind of dithering when you move the scene. When you stop, everything is just fine. Any hints for the possible reason for this? Thanks a lot. Best regards, Fangqin
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