some improvements to sculptmap alpha handling and LOD
some improvements to sculptmap alpha handling and LOD

AlphaStaxLLC/taiga,AlphaStaxLLC/taiga,AlphaStaxLLC/taiga,AlphaStaxLLC/taiga,AlphaStaxLLC/taiga,AlphaStaxLLC/taiga,AlphaStaxLLC/taiga,AlphaStaxLLC/taiga