Warning: Material returned overbright...

[MegaPixel]

Some of my recent test renders have been generating the following messages in the Vray Messages dialogue:

 

warning: Material returned overbright or invalid color (object......)

 

It goes on to pretty much list every object in my scene after this. What does this error mean and what is the best way to go about resolving it?

 

Thanks - MegaPixel

[Parker1]

You have some NON Vray materials or lights in your scene which are not compatible. Right click anywhere and look at the very bottom of the dialog...you will see "Vray scene converter". Just select that and say OK...it will convert all of your non Vray materials and lights to Vray ones and the error should go away.

[CosmicKitten]

Dave, I have the same problem for a long time As I didn't know how to fix it, I tried to render the scene. When it finished, it seemed ok to me and looked like there was nothing wrong with the materials.

 

Thanks Brian for your suggestion. I didn't know about the scene converter, next time I have the warning, I'll try it. I have a question.. If I don't care about the warning message and render the scene (as most times I did ) would it cause a bad result, or does it have an effect on rendering time? As I said when I did this, I didn't have a bad result. Was I just lucky?

 

Cheers

 

CosmicKitten

[Jeffrey]

You have some NON Vray materials or lights in your scene which are not compatible. Right click anywhere and look at the very bottom of the dialog...you will see "Vray scene converter". Just select that and say OK...it will convert all of your non Vray materials and lights to Vray ones and the error should go away.

 

I did what you've told but end up the errors are still there. Most people said even with the errors, it doesn't effect the final image but mine does~!.. All the GI effect is gone and I have no idea how to fix it. Closed all the interpolation effect but still... Can anyone help me out? thanks in advanced:)

[notamondayfan]

i had this problem once, and it actually turned out 2 be a camera correction modifier that was causing the errors. i guess vray doesnt like that modifier.

 

jus goes to show the problems arent always obvious, ie lights and materials.

[Jeffrey]

I uploaded 2 images so that one can understand my situation. I'm using irradiance Map and Light Cache as my render engine. Error1 is during the calculation and Error2 is rendering the image which doesn't look like the first one. it should looks more cosy. What could be the problem??

[MegaPixel]

I'm still gettign some overbright errors also after I converted the scene to Vray, however far fewer of them. Now this may be nothing, but for some reason, when I switched from Light Cache as secondary to QMC, the errors went away? Curious...

[chx]

Do you have pure white material 255 255 255, that can cause errors, especially with lightcache, try to put them like 253 253 253, dunno if it will help though.

[MegaPixel]

Actually, I think I do - I'll try that. Thanks

[Jeffrey]

when I switched from Light Cache as secondary to QMC, the errors went away? Curious...

 

Same here but QMC took longer to render. It's so frustrating because the project meeting the deadline~!..

[antonio_frias]

Good question, I got the same message a couple of weeks ago

[Jeffrey]

Do you have pure white material 255 255 255, that can cause errors, especially with lightcache, try to put them like 253 253 253, dunno if it will help though.

 

thanks, mate. I think also got one material with pure white. I'l try that. Cheers.

[olbo]

Sometimes I'd got this error, ... in my case my lightcache sample size was to

small. I had a long time to find that out tho ...

 

And for the reflectance a nice chart from Jomaga@Maxwellforum:

 

 

Most existend materials do not have a reflectance above 224 and a

pretty upper limit is 242. Hope this'll help you, as it was helpful to me. ;o)

 

 

 

take care

Oleg

[MegaPixel]

I'm really surprised that Vray would care enough to tell me that some materials in my scene are too bright? Wouldn't I just find that out duringthe test rendering process anyhow?

 

I'm still unsatisfied with the answer to this question. Anyone else?

[Jeffrey]

Do you have pure white material 255 255 255, that can cause errors, especially with lightcache, try to put them like 253 253 253, dunno if it will help though.

 

chx, I'd tried to lower down the white material but it doesn't help at all. The scence still came out dark and noisy. Anyone else can help?

[anvaraziz]

do u have any raytrace materials ? or ies lights,,,?

[Jeffrey]

do u have any raytrace materials ? or ies lights,,,?

 

none raytrace materials but lots of ies photonlights but I rendered some scene with ies lights before and it turn out alright.

[cicmi]

check out your output amounts in maps,or if you have vraylightmaterial delete it

[Jeffrey]

check out your output amounts in maps,or if you have vraylightmaterial delete it

 

How to check the output amounts in maps? sorry, I'm a newbie. I already delete vraylightmaterial and render but same result.

[maryam]

i got the same error in many of the renders,but it doesnt affect the final image,

Most of the time it happens when i have a lot of reflections & refractions on the scene,i think when you have enough Ram it would not happen again.

[MegaPixel]

Well, I used to think nothing was happening with Overbright warnings, but now I think I was mistaken. I attached an image below that shows some strange black artifacts in what would otherwise be a perfect render to me.

 

Could the overbright be related to RGB multipliers in the diffuse component of some materials, say I was trying to simulate a light bulb in a can light this way without using the VrayLight material type? I merged a few objects into my scene from an evermotion archinteriors package that were setup this way and started getting errors ever since. I don't see this stuff when I render on just my machine alone, only with the DR setup.

 

Anyhow, I'm still looking for a good resolution - I should be seeing no warnings in my vraylog.txt at all as far as I'm concerned.

 

Thx - Mega

[crushdrive]

I got same problem too..please let me know if you have solved the problem..thank you in advance..

[bricklyne]

Try hiding the glass-material objects in your scene and re-rendering the image again. If you don't get the message then..

Try changing your glass material completely and/or getting rid of any Falloff maps inthe reflection and refration slots. Do the same for any glossy materials in your scene as well. This might help.

 

If you still get the message then the pronlem might be either with using too white/bright materials (255, 255, 255) and/or having raytrace materials in your scene