landrvr1 Posted July 12, 2014 Share Posted July 12, 2014 (edited) I've been tweaking my glass settings for a recent project and have discovered a refraction problem. Basically, objects close to the glass are causing black refraction spots on my glass. As I remove those objects, the problem starts to go away. Been tweaking my settings but can't fix the issue. Reflections have been completely turned off to narrow down the problem. Turning the fog multiplier to zero solves the issue, but I need the fog.... EDIT. actually, the problem remains when camera is at a different angle. Boo. Would love some thoughts: Edited July 12, 2014 by landrvr1 Link to comment Share on other sites More sharing options...
landrvr1 Posted July 13, 2014 Author Share Posted July 13, 2014 Well, I found a quasi fix. The original glass panes were made from a standard Max box - which I've never had an issue with in the past. I recreated them as planes, but with the 'shell' modifier applied, and the problem went away. Bizarre. Link to comment Share on other sites More sharing options...
nitz3D Posted July 13, 2014 Share Posted July 13, 2014 Even i have had the same problem with some of my projects. Its seriously irritating.. Couldn't find the solution, so had to remove the Fog to a decent output. Here's one image with the same problem.. Link to comment Share on other sites More sharing options...
landrvr1 Posted July 13, 2014 Author Share Posted July 13, 2014 Yeah I don't understand it... At first I applied a bevel to the glass panes using the quad chamfer plug. That seemed to fix the problem until I did a test render in another part of the pane and the problem was still there - just in a different area. Then I thought it was fixed via making the glass thicker. Again, it seemed to work until I tested on a different pane and the issue was still there. Very strange. Link to comment Share on other sites More sharing options...
Corey Beaulieu Posted July 13, 2014 Share Posted July 13, 2014 Have you tried a more basic glass material? You are using a Falloff Map to drive the reflection and that will play into how the fog acts. Try just a 0 Black diffuse, a 255 White Reflection, IOR of 1.8, Fog color of choice with a multiplier of like 0.003 or there abouts and then use a slightly less than perfect refraction, say 245 White. Falloff Maps make all kinds of mistakes, especially when they are set to 0 and/or 255. If the about works, try a falloff with 5 and/or 250. This is just my guess at the issue. Link to comment Share on other sites More sharing options...
landrvr1 Posted July 16, 2014 Author Share Posted July 16, 2014 Tnx Corey, the problem still persists with the settings you gave. Vlado over at Chaos is taking a look at the file. If he finds any kind of fix (other than the shell modifier one I mention above, I'll post the info here. Link to comment Share on other sites More sharing options...
landrvr1 Posted August 11, 2014 Author Share Posted August 11, 2014 Turns out this is a bug. I'll post when more news is available. Link to comment Share on other sites More sharing options...
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