public abstract void drawPicture(Picture p, Affine a, Mesh h);
public abstract void drawGlyph(Font.Glyph source, Affine a, Mesh h, int rgb, int bg);
public abstract void drawPicture(Picture p, Affine a, Mesh h);
public abstract void drawGlyph(Font.Glyph source, Affine a, Mesh h, int rgb, int bg);