I builded project with Unity it work with x86 but did not work with x86_64 (dllnotfoundexception "libpxccpp2c.dll").
If you actually mean the Intel RealSense SDK 2014 and not the PerC 2013: - Did you use the proper one.? There's 2
Keep getting this exception:
Failed to load 'Assets/Plugins/libpxccpp2c.dll', expected 64 bit architecture (IMAGE_FILE_MACHINE_AMD64), but was IMAGE_FILE_MACHINE_I386.
if you're using Unity 4.x - you need to use the 2 32 bit libraries (which SDK puts in project by default)
But if using Unity 5, need to add the 2 64 bit libraries.
See Unity 5, RealSense Unity Toolkit runtime error due Unity not finding 64 bit DLL
Hello check Tips and trick Unity with Intel-RealSense SDK