andersbergqvist Posted March 20, 2014 Share Posted March 20, 2014 Hello! Im a relatively new user of vray, and are experiencing some problem when rendering windows. Im curios about how you prefer to do your glass reflections in vray so that they reflect the surrounding environment. Is it HDRI, or do you model the surrounding area? How do you get vray to reflect a cloudy sky in a window for example? I appreciate any help, or tip on this topic. Link to comment Share on other sites More sharing options...
Ismael Posted March 20, 2014 Share Posted March 20, 2014 http://www.flyingarchitecture.com/materials-glass/ Best teacher is personal observation coupled with rendering experimentation. There is an Architectural Glass there which you can use as a start point. Experiment with modeled vs mapped reflections. In the end your choice will cater to your preferences, not ours. Link to comment Share on other sites More sharing options...
andersbergqvist Posted March 20, 2014 Author Share Posted March 20, 2014 I have done a lot of experimentation, with different glass mat. But i still dont understand how to get those nice glass reflections from the sky. Is it possible to import a bitmap in the model so that the windows reflect that image? Link to comment Share on other sites More sharing options...
christofferthulin Posted March 21, 2014 Share Posted March 21, 2014 It's a matter of choice if you want to go for HDRI or vraySun as exterior lighting. Both will give you reflections of a blue sky. I always model the nearby surroundings which will be shown in windows reflections. Link to comment Share on other sites More sharing options...
andersbergqvist Posted March 21, 2014 Author Share Posted March 21, 2014 Ok, thx for the reply. I think i figured it out. Using spherical HDRI only in reflection GI, and then postproduction in PS... Link to comment Share on other sites More sharing options...
andersbergqvist Posted March 21, 2014 Author Share Posted March 21, 2014 Ok. Another question (might be the wrong section, but i give it a try). When i use a HDRI in the reflection GI, the background behind the glass AND the reflection renders out. Is it possible to only render out the reflection? Link to comment Share on other sites More sharing options...
Ismael Posted March 21, 2014 Share Posted March 21, 2014 http://help.chaosgroup.com/vray/help/rhino/150R1/render_elements.htm Link to comment Share on other sites More sharing options...
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