I tried changing the MipGenSettings on the RenderTarget but it had no effect at all. I guess autogenerate mipmaps uses a default way (averaging?) for creating mipmaps and that's it. Is that right?
I don't think you have any control over the way mips are generating at runtime, Looking at ComputeGenerateMips.usf, I think it is just downsampling the texture without even averaging it?
I tried changing the MipGenSettings on the RenderTarget but it had no effect at all. I guess autogenerate mipmaps uses a default way (averaging?) for creating mipmaps and that's it. Is that right?