LibGDX fonts with mipmapping drawn as black squares

问题

I've encountered some issues with LibGDX's filtering. Fonts work fine without using mipmaps, but when I add them the text renders as a series of black boxes.

Here's the method I use to generate a font.

public static BitmapFont generateFont(String fontPath, int size, String chars){
    FileHandle fontFile = Gdx.files.internal(fontPath);
    FreeTypeFontGenerator generator = new FreeTypeFontGenerator(fontFile);
    FreeTypeFontGenerator.FreeTypeFontParameter params = new FreeTypeFontGenerator.FreeTypeFontParameter();
    params.size = size;
    params.magFilter = TextureFilter.MipMapLinearLinear;
    params.minFilter = TextureFilter.MipMapLinearLinear;
    params.characters = chars;
    BitmapFont f = generator.generateFont(params);
    generator.dispose();
    return f;
}

Without mipmaps:

With mipmaps:

回答1:

Set params.genMipMaps = true before generating your font.

Also, it doesn't make sense to use mip-maps for your mag filter. Not sure if it could cause problems on some devices, but I would just set it to Linear.

来源：https://stackoverflow.com/questions/24544244/libgdx-fonts-with-mipmapping-drawn-as-black-squares