Ras Posted March 9, 2006 Share Posted March 9, 2006 Hi guys I´m teaching Viz at the School of Architecture in Denmark. I haven´t really got much experience with radiosity (focusing on MR). One of my students (Morten) has made this attempt but we can´t seem to get the banding to go away... It seems to be associated with regathering. Any clues? Thanks a bunch Link to comment Share on other sites More sharing options...
theqball Posted March 9, 2006 Share Posted March 9, 2006 Try adding an indirect (and/or direct) light filtering of 1 or 2. This basically applies a blur to the data. It’s hard to tell what you final meshing size is also, you might want to go smaller on the adaptive subdivision settings. Also Adaptive subdivision works better when the original mesh doesn't have long skinny polygons. you could add a subdivide modifier to break up the polys a bit more on the ceiling and wall and see if that helps. Link to comment Share on other sites More sharing options...
Ras Posted March 10, 2006 Author Share Posted March 10, 2006 Thanks Shane Trying it now... Will get back to you. Link to comment Share on other sites More sharing options...
Ras Posted March 10, 2006 Author Share Posted March 10, 2006 Ok - tried to do what you suggested Shane, but it has no effect. It seems to be solely related to the regathering... Are there any known issues with regather and daylight systems? I have a new screendump and the file attached. Any help will be greatly appreciated. Link to comment Share on other sites More sharing options...
alfienoakes Posted March 10, 2006 Share Posted March 10, 2006 If you are running the image with regather, you don't need a fine mesh, let alone adaptive sub-divs.. Thats what the regather will do, in fact, you really only need a very basic solution. Try a mesh of 1000mm, 20% solution. NO sub-divs, and NO shooting lights etc.. See what that looks like. And Change your rays per sample to say 150, with a filter radius of 4, clamp at default. Would have a look at your model, but I'm only replying to this between regather calcs.. Andy Link to comment Share on other sites More sharing options...
theqball Posted March 10, 2006 Share Posted March 10, 2006 I think Andy is correct... here's a pic of my settings. I think two things went wrong for you the meshing size was too big for the Filter Radius you had selected, and a lot of samples were defining a band because the spread wasn’t that far apart. Link to comment Share on other sites More sharing options...
abicalho Posted March 14, 2006 Share Posted March 14, 2006 The banding is not coming from Regather. It's coming from Shooting the direct light and storing it in the mesh. Why are you using "Store Direct Lighting" and afterwards using Regather? It doesn't make sense. Just choose one and go with it. Also, I would not recommend storing the direct light of the skylight if you have a meshing of 0.5 meters. You can choose to use a higher number of samples, by increasing the value in the Skylight object. That may help, but may not solve your problem. The best solution is to not use Shoot Direct Lights in this case. Link to comment Share on other sites More sharing options...
Ras Posted March 15, 2006 Author Share Posted March 15, 2006 Beautiful! Thanks guys... Didn´t really think about the shoot direct with the regather... Thanks again Link to comment Share on other sites More sharing options...
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