jledezma Posted November 30, 2004 Share Posted November 30, 2004 Those blue circles shouldn't be there. Why does this happens? This is the second time I get this error. Who do I get rid of it? Link to comment Share on other sites More sharing options...
Ricardo Eloy Posted November 30, 2004 Share Posted November 30, 2004 Looks like VRay, right? These can be due to low settings. Check http://www.evermotion.org for a detailed article on these. Link to comment Share on other sites More sharing options...
jysngltndz Posted November 30, 2004 Share Posted November 30, 2004 maybe one of your object doesnt have a uvw or has too much exposure from light... Link to comment Share on other sites More sharing options...
jledezma Posted November 30, 2004 Author Share Posted November 30, 2004 Po meu, it is VRay, vei. It was working nice on Low settings then I raised to High for the final image and voila... there are your blue circles! Hey jysngltndz... can I call you Jys? The material on the wall doesn't has a UVW but its material doesnt have any texture. Do I need to apply map coordinates anyways? Link to comment Share on other sites More sharing options...
Fran Posted November 30, 2004 Share Posted November 30, 2004 Hi Jorge, Sometimes this happens when a standard material has too high a specular value. I had this same thing happen and that seemed to be the culprit. A low-quality solution looked great and the high-quality had the spots. This can also be caused by rogue raytrace maps or materials in your scene. If you use any Architectural Materials, they use raytracing almost always and you can't override it. For a general trouble-shooting guide, try this link: http://www.metinseven.com/article_vray_splotches.htm Metin is very knowledgeable. Nice work, BTW. Link to comment Share on other sites More sharing options...
salf Posted November 30, 2004 Share Posted November 30, 2004 Log in the VRAY forums and do a search, the metin's guide that FRAN posted, is a "Must have", but in the Vray forums, you'll find long threads about this "colored" splotches issue and its solutions. Link to comment Share on other sites More sharing options...
jledezma Posted November 30, 2004 Author Share Posted November 30, 2004 Log in the VRAY forums and do a search, the metin's guide that FRAN posted, is a "Must have", but in the Vray forums, you'll find long threads about this "colored" splotches issue and its solutions. Fran, this is a simple VRay material, doesn't even have an specular slot. And since it is rendered in VRay I can't even use the architectural material. I've seen this Metin tut before. The 3 artifacts that he describes here don't look like the one I've got tough. Anyways, I'll try to use his tips for the third kind: Harsh artifacts. Slaf, do you mean http://www.vray.info, http://www.chaoticdimension.com or any other? Link to comment Share on other sites More sharing options...
jysngltndz Posted November 30, 2004 Share Posted November 30, 2004 Hey jysngltndz... can I call you Jys? The material on the wall doesn't has a UVW but its material doesnt have any texture. Do I need to apply map coordinates anyways? it may sound awkward but apllying map coordinates solve most of my splotches problems... just give it a shot... jys????... "soon" will do... Link to comment Share on other sites More sharing options...
Crazy Homeless Guy Posted November 30, 2004 Share Posted November 30, 2004 i always throw my hat into the UVW map circle when i see splotches like these. i have never heard of the specular problem Fram mentioned, but it is good to know. check all of you materials for UVW maps, the splotches don't necessarily show up on the ones missing the maps. Link to comment Share on other sites More sharing options...
Fran Posted November 30, 2004 Share Posted November 30, 2004 Fran, this is a simple VRay material, doesn't even have an specular slot. And since it is rendered in VRay I can't even use the architectural material. I've seen this Metin tut before. The 3 artifacts that he describes here don't look like the one I've got tough. Anyways, I'll try to use his tips for the third kind: Harsh artifacts. Slaf, do you mean http://www.vray.info, http://www.chaoticdimension.com or any other? The spots aren't necessarily caused by the material of the surface on which they appear. It could be your grass or some other material in the scene. Make sure that any objects that use materials with bitmaps are UV mapped. Also, make sure that any bitmaps have Apply checked in the Crop/Place section of the Bitmap parameters. If all of your scene materials are VRay materials, then specular level is not the problem. You might want to double-check the scene materials from the Material/Map Browser (set the viewing to Scene). Another thing that VRay doesn't like is multi/sub-object materials that mix material types - you don't want to mix Standard and VRay mats, for example. FYI, you can use Arch mats with VRay but they won't render in the ME if VRay is the ME renderer. The problem with them is that, unless they are ideal diffuse, the materials will use the raytracer. Link to comment Share on other sites More sharing options...
Sawyer Posted November 30, 2004 Share Posted November 30, 2004 Seems to me the more recent builds of vray have been giving me at least more problems with mats. Other things to check for: Diffuse color for glass. If you need blue glass use fog color not diffuse. Try to stay away from brightening a map with OUTPUT settings. And Yes UVW MODIFIERS to everything. I was up most of the weekend finding out those problems. Link to comment Share on other sites More sharing options...
jledezma Posted November 30, 2004 Author Share Posted November 30, 2004 FYI, you can use Arch mats with VRay but they won't render in the ME if VRay is the ME renderer. The problem with them is that, unless they are ideal diffuse, the materials will use the raytracer. Ohh! Too much knowledge!!! I still have the problem. I have mapped a lot of things, even those that doesn't need mapping. Reduce the strenght of the door lights (I've never liked those any ways but the client keeps thinking those lights will be stronger than the sun ) The only thing that worked is changing HSph subdivision to 70 and Interpolation Samples to 45. But it just work on Low preset with 640x480. As soon as I change to 800x600 or Medium preset... blue spots all over again Link to comment Share on other sites More sharing options...
jledezma Posted November 30, 2004 Author Share Posted November 30, 2004 Did you try hiding the lamps? Not yet because the first images rendered ok with those lamps. I just weakened them. Link to comment Share on other sites More sharing options...
joske Posted November 30, 2004 Share Posted November 30, 2004 because the spots are blue and your glass is blue,my first guess would be the glass material is causing this try a render whitout the glass to see try a render whitout -everytime- another material to eliminate the culprit... when al solutions are not doing the trick then just use plain logic... oh and please vote for me peoples... i'm running 2nd... just missing a couple of votes Link to comment Share on other sites More sharing options...
Fran Posted December 1, 2004 Share Posted December 1, 2004 I always use multi/subobject materials and got never problem with vray. I also use standard materials mixed with vraymats. Hmmm thats pretty interesting what you say, never heard about. Well, I'm not making it up. This is just stuff I've heard on the VRay forum. Does this mean I can stop worrying about it? Link to comment Share on other sites More sharing options...
jledezma Posted December 1, 2004 Author Share Posted December 1, 2004 Well, at the end I had to turn off the door lamps. Link to comment Share on other sites More sharing options...
Fran Posted December 1, 2004 Share Posted December 1, 2004 Well, at the end I had to turn off the door lamps. You could try excluding the lamp objects from generating GI in VRay object properties. Did you try hiding only a portion of the lamp to see if the artifacts are related to a material on one of the objects? Link to comment Share on other sites More sharing options...
Chad Warner Posted December 1, 2004 Share Posted December 1, 2004 Well, I'm not making it up. This is just stuff I've heard on the VRay forum. Does this mean I can stop worrying about it? I Have had problems with mxing material types in an MSO material, but only when it applys to blocks or ADT objects. Generally the problem I have is not that the objects throw off splotches, but that they don't receive GI correctly, so they appear dark in the rendering. -Chad Link to comment Share on other sites More sharing options...
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