gabrielhildebrand

Well as I said above that exclude type works for illumination and shadows cast. But the direct light still affects the diffuse channel. The questions was if one knows how to exclude the direct light.

Well. My problem is I don't get the material env. slot to work. I see no reflection of the map I put into the env. slot of the material. The material works as it should but not so great in that scene because the scene itsself has less environment information than my usual scenes. The mat isn't way different that one that Nicolai Bongard suggested. Blinn, 19 IOR, light scratchy map in the ref. slot at 30%, ref. grey at 200, -0.2 anisotropy. Maybe I got something wrong with the mapping type. Even if I toggle the map preview. Or maybe there is a condition by vray where the slot is disabled. I know how the slot works in mental ray. But with vray he doesn like me //EDIT: Ok got it to work in a blank test scene with the same mat and obj. Have to be a problem in the scene. I'm on that. Still not sure how to exclude an obj from direct light. but this question is not related with this material

Hey thanks for your reply! Well I'm using the vray obj properties more often then I should The material is nearly exactly like you described. Just not using Ward but Blinn with -0.2 anisotropy and and a light scratchy reflection map. The problem and the ideal solution would be to use the material env. slot as the scene itself is how I like it but this metal isn't really working now because of missing environment information in the scene itself. Of course I know its kind of hacking. But well its CG. What I tried in the env.slot: # Hdr with vrayhdr (spherical/angled)(how do I know in this case how much overall multiplier I need?) # Vraymap with a flatten jpg of a hdr # Bitmap with the jpg version with screen, obj xyz, world xyz and explicit uv channel uv mapping And in all of those tests. No difference. All I was seeing was the scene env. reflection I had without the evn slot. So in general the slot works? If I use the Vrayhdr map I only need to set up the map type and no need to mess around with the mapping typ below of maxs internal option dialog for this case? thanks for reading!

Hi there, hope someone is able to help me. I got a situation where I need more reflection on a metal surface material but not any other scene materia/obj. I'm using vray 2.4. Scene is lit with vray light, a vraysky in the enviroment slot (8) and physical cam. No override. No domelight. I coming from the mentalray department from the past. I was used to the material environment slot (in the map roll out). But somehow it not that straight forward with vray. On a blank test scene the slot seems to affect the reflection but not what I would call enviroment reflection. The one point I think I may have wrong is the mapping type (tried obj/world/screen) and the other, any condition I'm not aware of that disables the enviroment slot. Didn't find anything in the vray manual and this question seems pretty uncommon on the net. Does the material environment slot actually work with vray and what do I need to take care of that its working like a domelight reflection? Any other solution other then using a domelight and exclude? Which takes me to the last question. How one can exclude obj from direct lighting and not "just" GI/shadow?

Nice thanks! I play around with the threshold. cheers

Quick question. Did you mean the "use retrace threshold"? Did you change the threshold or just activated it?

Hi thanks for the reply. Actually I only use the Vray frame buffer and the Max frame buffer doesn't produce this bug. Unfortunetly I have to use tiff. So this is no option. I think its a Vray buggy behaviour with the tiff setup dialog as the window itself appears in the language my PC is set but max itself uses english so does the tiff setup dialog appear in english with max frame buffer.

Hi there, as I don't know exactly if the problem is max/backburner or vray related I put it in here. Hope I explain it right. I often have a bug with my saved tif output files. I render with the vray frame buffer, save all parses as 16 bit tifs with alpha channel and send it out to the backburner. Really often but not always however the tif images are saved as default 8 bit without alpha.Seems like max forgets the setup dialog selection I made. This bug is really bad bc no chance to same them as 16bit afterwards if you would when you render local. Is there a way to change the default tif setting to 16bit with alpha? Or does anyone have a workaround?