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Glass double reflecting
show user profile  Toadsage
I'm rendering a cup in mental ray, and I cant get the effect I want. For some reason it is reflecting on the inside portion of the glass, and the outer portion creating two reflections of the same thing.

I am using a standard material with a falloff (perpendicular/parallel) in the opacity channel. A falloff map in the reflection channel going by shadow/light, with a reflection map(texture) in the bottom slot slot. IDR 1.5

Mental ray
Preset: low quality
2 bounces
500000 in photon caustics per light
200 maximum num. photons per sample.
(rest should be default)

Free area light. mental ray shadows. 4300lm

Any suggestions will be very helpful. Thanks

Good at 3ds max
Project Anime Recruit
read 650 times
2/19/2009 7:07:58 PM (last edit: 2/19/2009 7:12:58 PM)
show user profile  horizon
Is your object closed? If not mr might think you've got 2 thin walls on the glass there and not one thicker wall

read 636 times
2/19/2009 8:23:56 PM (last edit: 2/19/2009 8:23:56 PM)
show user profile  Stephen R.
try using the mental ray architectural physical glass mat, might give you a better result.

read 633 times
2/19/2009 8:26:35 PM (last edit: 2/19/2009 8:26:35 PM)
show user profile  mrgrotey
Well I can see a reflection. Look at the far left and right of the inside, reflection! then towards the middle the reflection turns red, its reflecting the liquid that's all. The glass on the inside is angled downwards so its only going to reflect whats under it i.e. liquid and grey table.

p.s. add another meshsmooth iteration or two, I can see segments around the rim

read 605 times
2/20/2009 2:06:12 AM (last edit: 2/20/2009 2:23:54 AM)
show user profile  Westcoast13
Doesnt he mean the bits on the front that look like double reflections? Like Horizon said, might be 2 objects or not closed etc.

My Turbosquid Area

read 592 times
2/20/2009 3:49:53 AM (last edit: 2/20/2009 3:49:53 AM)
show user profile  mrgrotey
Sorry completely read this thread wrong, ignore my stupid comments

read 589 times
2/20/2009 3:50:57 AM (last edit: 2/20/2009 3:50:57 AM)
show user profile  Westcoast13
Consider yourself ignored. :)

My Turbosquid Area

read 576 times
2/20/2009 5:22:38 AM (last edit: 2/20/2009 5:22:38 AM)
show user profile  Toadsage
Sorry for the late reply ^^

Anyways, I tried making a simple glass with the lathe modifier, and assigned the texture to it, and I'm getting the same result. I also tried the architectural physical glass material on arch & design, and that fixes the glass. However, there has to be another way than that material to fix it I would think. Maybe I should just start over from scratch.

By the way, in that physical glass material, anyone know how they got it to look like that? I mean the material looks like a hollow glass ball. Good at 3ds max
Project Anime Recruit
read 519 times
2/26/2009 9:52:39 AM (last edit: 2/26/2009 9:52:39 AM)
show user profile  horizon
Lathe will often give you open meshes if you don't weld it properly.
To test it and being sure it's not the open mesh problem, polymodel it. Cylinder, inset top, extrud the inside, add turbosmooth, render

read 491 times
2/26/2009 10:04:30 PM (last edit: 2/26/2009 10:04:30 PM)
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