Good looking glass is matter of properly researching references. There are hundreds of type of glasses, so while you can create a basic glass by two ticks in Corona (reflection and refraction to 1.0) a more suitable can be, quite bit more.
High-rise glass panes have often a thin foil on outside that reflects more light than surface of pure glass, and reflection can be warped by pressure of the framing system (but people overdo this often...there are in fact, frames that keep the glass absolutely straight, even in skyscrappers, so don't warp them into extreme as some sort of dogma by default). Some window feature multi-pane system,etc..
So the "easy" way is to replicate the reality through proper model with correct thickness and blended shader (or multiple shaders depending on the side of the glass pane, as renderers don't exactly cope well with stacked surfaces on top of each other). This should simulate the reality as you see it on photography, but will be tougher to render (multiple surfaces that refract, inner surface reflections,etc..).
The harder but faster to render is to fake it through thin surfer and create more eloquent blended shader.
All the ways require to study the exact reference you wish to recreate. There is no tutorial for that.
Edit: Well, actually, the environment, light, light vs building position, light vs camera position,etc... all play very crucial role in capturing attractive look on glass facade.
But the answer is the same, studying the reference and connecting the dots in brain. After that, it's simple craftmanship to translate that info into CGI form.
« Last Edit: 2014-04-12, 01:17:45 by Juraj_Talcik »
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