code: public float getBlendFactor(AiTextureType type, int index) {
          checkTexRange(type, index);
          
          return getTyped(PropertyKey.TEX_BLEND, type, index, Float.class);
      }
docs: Returns the blend factor of the texture.<p>
  
  If missing, defaults to 1.0
  
  @param type the texture type
  @param index the index in the texture stack
  @return the blend factor