public static extern bool FT_Get_Color_Glyph_Layer(IntPtr face, uint base_glyph, out uint aglyph_index, out uint acolor_index, ref FTLayerIterator iterator);
public bool GetColorLayer(ref FTLayerIterator iterator, ref FTGlyphSlot glyph) { return(FreeTypeNative.FT_Get_Color_Glyph_Layer(reference, glyph.Index, out var a, out var b, ref iterator)); }