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9139f21e09
Mipmaps don't work very well in the current atlas because there is not enough padding between the textures. If ensure_mipmaps is called it will now create a new texture and migrate the atlased texture to it. It will use the same blit mechanism as when migrating so it will try to use an FBO for a fast blit. However if this is not possible it will end up downloading the data for the entire atlas which is not ideal.