I am working on the grass generator, which is similar to the Nature Demo, but with more flexibility and can be applied to other scene easily.
Since there will be repeatedly large number of grass node on the scene, the performance is not very good. However, if I use a half-sized texture for the grass, the performance is much better. I would like to know how can I control the mipmaps in panda, as it seems manual mipmapping is not supported ?
If not, I decide to do it in the shader, which use a high resolution texture only when it is very near to the camera. Any advice ?