Ricardo Eloy Posted October 27, 2005 Share Posted October 27, 2005 Hello, all! Has anybody have this problem? Some scenes I render with radiosity in Max 7.5 come out egg yellow. No kiddin', really yellow. Strangely, the same scene used to render ok before we upgraded. Any hints? Link to comment Share on other sites More sharing options...
MegaPixel Posted October 27, 2005 Share Posted October 27, 2005 Environment Ambient Color something other then black? Tends to change after a fresh install?? Link to comment Share on other sites More sharing options...
Ricardo Eloy Posted October 27, 2005 Author Share Posted October 27, 2005 Nope. Everything is just like it should. Another thing that came to my attention is that, when that happens, it seems that max is ignoring light intensities and makes them sun bright, even though there is only one light (cooper.ies file to it) with only 139 candelas... Link to comment Share on other sites More sharing options...
Hao La Posted October 28, 2005 Share Posted October 28, 2005 try to check the exposure control , also make sure all materials' reflective . Link to comment Share on other sites More sharing options...
Ricardo Eloy Posted October 28, 2005 Author Share Posted October 28, 2005 Everything is fine. Tried using simple standard mats, then tried with Advanced Lighting Override, and then Architectural Mats. Same results. The funny thing is that this scene is the one I use to teach radiosity and has been done by me like a thousand times (always on 7.0). Weird, weird... Link to comment Share on other sites More sharing options...
MegaPixel Posted October 28, 2005 Share Posted October 28, 2005 Could try recreating the light sources from scratch for the heck of it? Link to comment Share on other sites More sharing options...
Ricardo Eloy Posted October 28, 2005 Author Share Posted October 28, 2005 Done it. Nothing seems to work. Funny thing is that the same file sometimes works all of a sudden. Another thing: I added a standard light to simulate the light coming thru an open door and nothing in the world makes it render. Link to comment Share on other sites More sharing options...
edward80 Posted October 28, 2005 Share Posted October 28, 2005 mate..this thing have nothing to do with upgrading..i guess, i used to have same problems before.when u use radiosity your exposure settings are set to logarethmic by default & that causes the yellow thingy...go to the environment menu & check things out..& change the logarethmic to no expodure... hope this was helpful Link to comment Share on other sites More sharing options...
Ricardo Eloy Posted October 28, 2005 Author Share Posted October 28, 2005 Already tested that. Nothing to do with the problem, I'm afraid. I tried Automatic, Pseudo-color, Linear and actually no exporure control at all and the yellow monster is still there. One thing that seemed to work was restarting my system. But, hey, that shouldn´t happen! Link to comment Share on other sites More sharing options...
Fran Posted October 28, 2005 Share Posted October 28, 2005 Rick, I had that happen with VIZ 2005. Does it happen if you set the IES to Diffuse instead of using a file? I had sent a sample scene to Autodesk, explaining the bug, but I guess it's not solved yet. I can't remember exactly how I worked around it. It seemed to have something to do with objects set to not cast shadows in Advanced Lighting. Link to comment Share on other sites More sharing options...
Ricardo Eloy Posted October 28, 2005 Author Share Posted October 28, 2005 Hum...well, at least it means I'm not crazy. Anyway, now that you mentioned, yes, I was using photometric lights set to diffuse... I'll try removing the shadows in advanced lighting and see what happens. Thank you, Fran! Link to comment Share on other sites More sharing options...
Fran Posted October 28, 2005 Share Posted October 28, 2005 Actually, what I meant was that I thought removing the shadows in Advanced Lighting caused the problem. I was trying to keep a bunch of diffuser fins from casting shadows in a luminaire. I suspect this is an unpredictable bug that may not have a solution and will either show up or it won't. Link to comment Share on other sites More sharing options...
Ricardo Eloy Posted October 28, 2005 Author Share Posted October 28, 2005 Very unpredictable, I may add. I was teaching radiosity to 7 students when I first crossed this bug. Nothing I did seemed to work, and just like it started, it would go away (not at the same time in all machines, of course). About the shadows, I guess that's not the problem, coz it happened either way. My guess was that the new Adaptive Subdivision feature introduced with 7.5 had something to do with it, since I had never seen anything like that before, but if you had the same problem with Viz 2005, my theory goes down the drain... We could really use a help from Autodesk/Discreet/whatever-they-call-themselves' support now, huh? Link to comment Share on other sites More sharing options...
abicalho Posted October 31, 2005 Share Posted October 31, 2005 Rick, You should ask Francisco to submit this as a support request to "whomever". He's a distributor, he should have direct access to some sort of a support there. If you send me a file I'll take a look at it, but no promisses. Link to comment Share on other sites More sharing options...
Ricardo Eloy Posted October 31, 2005 Author Share Posted October 31, 2005 Thank you, Alex. You know, the first name he suggested was yours, hehehe... Anyway, I'm gonna check with my students whether they still have some of those files or not and mail you. Link to comment Share on other sites More sharing options...
Swapnil Deshmukh Posted March 12, 2007 Share Posted March 12, 2007 Why dont you merge all the stuff to a new max file & try to render it. I think, it might work Link to comment Share on other sites More sharing options...
Ricardo Eloy Posted March 12, 2007 Author Share Posted March 12, 2007 Well, Swapnil, I really appreciate your support, but the (old) problem is solved, already. It seems there was a bug regarding the lights in Max 7. The egg-yellow thing had something to do with the color Max assigns the light objects. Once I changed the color (object color), it worked. Thanks, anyway. Link to comment Share on other sites More sharing options...
Angela Giladi Posted March 12, 2007 Share Posted March 12, 2007 Hello Rick, A long time since you posted this - could you please post if you found a solution for this problem. I ran into the same egg-yellow using IES daylight sytem, radiosity on Max9 Thanking you, Angela Link to comment Share on other sites More sharing options...
Ricardo Eloy Posted March 12, 2007 Author Share Posted March 12, 2007 The egg-yellow thing had something to do with the color Max assigns the light objects. Once I changed the color (object color), it worked. Hi, Angela. It's been a really long time since I stopped using radiosity, but this is what I did to solve the problem back then. Cheers! Link to comment Share on other sites More sharing options...
Angela Giladi Posted March 12, 2007 Share Posted March 12, 2007 ... It's been a really long time since I stopped using radiosity... Thanks for your reply. I was reluctant to modify any of the IES sun parameters, but I'll give it a try. It's seems that not many people are using radiosity today. At least there are old posts!!! Not much new stuff, and less with accurate lighting. Thanks again, Angela Link to comment Share on other sites More sharing options...
Ricardo Eloy Posted March 12, 2007 Author Share Posted March 12, 2007 Angela, you don't need to change the Sun's color. It's just the object color (right-click on the sun -> Object properties -> Color). The radiosity engine seemed to be taking the light color from the object's color instead of its regular parameters. Anyway, it's been a looooong time since I last messed with radiosity, which makes it a bit hard to remember every detail... Link to comment Share on other sites More sharing options...
Angela Giladi Posted March 12, 2007 Share Posted March 12, 2007 Your memory is spot-on...no more egg dripping all over my screen! Thanks again, Angela Link to comment Share on other sites More sharing options...
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