Reference nvgCreateFontMemAtIndex
Declared in Codebot.Render.NanoVG.pas on line 736
FontIndex specifies which font face to load from a .ttf/.ttc file
function nvgCreateFontMemAtIndex(Ctx: PNVGcontext; const Name: string; Data: PByte; NData: Integer; FreeData: Boolean; FontIndex: Integer): Integer;