This thesis examines what kind of information is transferred from a 3D model, constructed in BIM software program (Revit), to a VPL software program (Grasshopper), in order to run building performance simulation analysis, more precisely daylight and glare analysis, while using a third-party plugin called Rhino Inside Revit. The thesis is structured in multiple chapters according to what type of research was done. Following that, Chapter 2 focuses on a quick review about importance of building envelope while using BPSTs for visual comfort analysis. It continues with an explanation of daylight analysis simulation tools, considering BIM software programs as modeling tool and VPL as analyzing software programs.