I watched a tutorial on PBR (Physically Based Rendering (I guess)) - http://www.cgmasters.net/free-tutorials/realtime-pbr-in-blender/ and when I downloaded the file some setting were kinda different. I couldn't put reflection maps on the objects because the tab "Mapping" is missing. Also, there's Real-time HDR Image which blew me away since nobody did it (youtube videos). I replicated the world setup from Cycles since some nodes from Cycles seem to work in Real-time - GLSL (which is awesome), but it didn't work (the texture wasn't 360 like in the blendfile from cgmasters). In the nodes for the sphere whatever texture I click the specular map doesn't change in the Material Preview.
Is the code manipulated specifically for PBR or am I missing something obvious?
Also, I really need real-time HDRI so please help!
Update: I realized it's a test build version (2.78), it doesn't work with 2.77a, but the sphere texture still puzzles me (It doesn't update when I change it from the nodes), but it's a complicated setup so I should probably make a good study of it.
I almost forgot - I still can't aply an HDR image in the viewport (make it 360) and if it works from the cgmasters file, then it's possible. Please help!
Blend File is here: