Koskinen Posted July 6, 2004 Share Posted July 6, 2004 Hi! We're are doing a lightning study which include some pseudo colors calculations. The problem is; starting from the same scene and lightning data, the results in both Viz 2005 and Lightscape are not the same We are using the architectural materials in Viz and the proper materials from lightscape...could it be the problem? Thanks! Link to comment Share on other sites More sharing options...
STRAT Posted July 6, 2004 Share Posted July 6, 2004 the problem is that lightscape and viz5 have 2 different renderers, hence 2 different outputs. Link to comment Share on other sites More sharing options...
Koskinen Posted July 6, 2004 Author Share Posted July 6, 2004 Is that true? I always thought that Autodesk integrated the Lightscape renderer in Viz... Link to comment Share on other sites More sharing options...
abicalho Posted July 6, 2004 Share Posted July 6, 2004 I should write this on my website so I do not have to repeat it every 2 weeks on different forums. Lightscape uses a Progressive Refinement Monte Carlo Radiosity engine. MAX and VIZ use a Stochastic Relaxation Radiosity engine. They are different, they work differently, but they should produce the same exact result when testing against the same exact conditions. I'm a QE for 3dsmax and Autodesk VIZ and I am the one who tested the Radiosity engine since VIZ 4, and I test the quality of the output against Lightscape and yes, they both output the same exact results, especially now with the Arch Material. Make sure you have: - Enough Meshing to at least match lightscape's - No Ambient Light - No Standard Lights (only Photometrics) - Process Initial Quality at least up to 98% And you should get very similar results in both applications. When using Daylight, each software uses a different method, so you won't be able to compare both, unless you do not use Windows and Openings in Lightscape, forcing it to gather the sky directly. If you have details on where they're different, I'd like to take a look at them. Alexander Link to comment Share on other sites More sharing options...
STRAT Posted July 6, 2004 Share Posted July 6, 2004 Is that true? I always thought that Autodesk integrated the Lightscape renderer in Viz... nope, they certainly did not Link to comment Share on other sites More sharing options...
Jeff Mottle Posted July 6, 2004 Share Posted July 6, 2004 I should write this on my website so I do not have to repeat it every 2 weeks on different forums. No need, I've posted this to the Tips and Techniques section as a permanant thread. http://www.cgarchitect.com/vb/showthread.php?t=6287 Link to comment Share on other sites More sharing options...
Koskinen Posted July 7, 2004 Author Share Posted July 7, 2004 Could you give me more infos about the "meshing to match the one of Lightscape" please? Do you mean to have it triangulate or to had more subdivisions? Thanks! Link to comment Share on other sites More sharing options...
rivoli Posted July 7, 2004 Share Posted July 7, 2004 déjà vu? maybe a third one is needed to get all the meshing informations. Link to comment Share on other sites More sharing options...
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