Glass material in windows
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hello,
i've been playing a little bit with glass in vray, and i've come up with the following summary of how the window glass behaves. I must say, that the simplest way (extruded face) gives the most satisfactory results. it looks the same as the 2 separate panes with opposite normal directions, but it's easier to build
Also, the glass panes were first grouped and the material was assigned to the group as a whole.
the sketchup view on the left is Monochromatic, with dark pink as the color of the 'dark' side
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[xxl-img:2fu5b0ql]http://i.imgur.com/kodcV.jpg[/xxl-img:2fu5b0ql]
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Thats very interesting. In the glass material you are using is there any refraction added?
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yes,
i'll add tomorrow the material settings and how i got to its values.
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as long as you work with solid volumes and real-world thicknesses, vray (and most rendering engines) will behave as expected.
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so, i decided that the easiest way of sharing the material evolution is to share the .skp file... here you go.
in short, the rearmost row and the middle row have the same materials, but balls in the rearmost row have normals facing inwards.
then, from left to right, only the Reflection color increases - 0, 10, 30, 60, 255.
the foremost row has reflection color set to Fresnel, with the Parallel color set to black (0) and the Perpendicular color increasing in the same sequence from 0 to 255.
the two balls in front show what happens when i start messing around with the Refraction Transparency color.in addition i made a render with caustics to see which one is the best looking material... i'm attaching that render too.
i hope someone will find it useful; it was good for me, because i tested all the combinations and their outputs, so it will be harder for me now to forget what does what
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It should be added, that when rendering architecture, it is usually a good idea to use thin 'fake' glass by simply using a reflection layer with no refraction. Refraction adds render time and with a single pane of glass in a window, you will not need fraction in my opinion.
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valerostudio, so you suggest adding reflection layer, setting its color to ~50 and then using the Transparency in Diffuse layer?
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