Kalimero Posted October 5, 2007 Share Posted October 5, 2007 hello I have a problem wich is pretty basic i think, i have made a bottle of glass and i need the etiquette(logo) to just show its name etc.. so i am using an alpha channel done in a tga file my problem is that i can not make it work, i have attached a picture as you can see theres a green area wich normally should be the transparent area, i am using vray material . Link to comment Share on other sites More sharing options...
BrianKitts Posted October 5, 2007 Share Posted October 5, 2007 in the maps for your vray material, you need to also put your tga file in the opacity channel and tell it to use the alpha for the mono channel. Link to comment Share on other sites More sharing options...
Kalimero Posted October 5, 2007 Author Share Posted October 5, 2007 hi, well this is what i get now (see pic) theres still the green area, i put the tga in the difuse and opacity chanel and checked the alpha for mono chanel Link to comment Share on other sites More sharing options...
manta Posted October 5, 2007 Share Posted October 5, 2007 So you have a black and white label in the opacity map channel...black being the transparent part.... Link to comment Share on other sites More sharing options...
Kalimero Posted October 5, 2007 Author Share Posted October 5, 2007 yes right black being the transparent part Link to comment Share on other sites More sharing options...
manta Posted October 5, 2007 Share Posted October 5, 2007 Do you want to post the file, with the maps of coarse, and I'll look at it... Link to comment Share on other sites More sharing options...
Kalimero Posted October 5, 2007 Author Share Posted October 5, 2007 i can't its too big. Link to comment Share on other sites More sharing options...
manta Posted October 5, 2007 Share Posted October 5, 2007 That bottle scene is too big...shouldn't be... Link to comment Share on other sites More sharing options...
Kalimero Posted October 5, 2007 Author Share Posted October 5, 2007 everything seem well settled , Link to comment Share on other sites More sharing options...
manta Posted October 5, 2007 Share Posted October 5, 2007 So you fixed it ? Link to comment Share on other sites More sharing options...
Kalimero Posted October 5, 2007 Author Share Posted October 5, 2007 No..i'll keep trying Link to comment Share on other sites More sharing options...
manta Posted October 5, 2007 Share Posted October 5, 2007 Here try this...open up that map file in photoshop and separate the alpha into its own file save it as a jpeg, and load that file into the opacity map channel, I think what is happening is that its not getting a black and white texture, its somehow using color or grayscale to determine the transparency...it needs to be absolutely black and white... Link to comment Share on other sites More sharing options...
Kalimero Posted October 5, 2007 Author Share Posted October 5, 2007 yes i have try this too and i always get this bloody green color instead of a complete transparent area , my tga are good they're completely black and white... Link to comment Share on other sites More sharing options...
Kalimero Posted October 5, 2007 Author Share Posted October 5, 2007 what i need is this(see jpg) and i cant seem to do it in vray Link to comment Share on other sites More sharing options...
manta Posted October 5, 2007 Share Posted October 5, 2007 I'm guessing that the label is a separate object...render it alone without the bottle...it might be overlapping faces or something along those lines... Link to comment Share on other sites More sharing options...
Kalimero Posted October 5, 2007 Author Share Posted October 5, 2007 nop there's is only one object: the bottle anyway speaking about set ups; is this setup has to be done with 2 vray material(one for etiquette, one for bottle) and one max object, or can it be done just thru one vray material and just assigning to diferent max id's to the unique object? because i was starting to thinking doing it with 2 object and 2 mats as with one max object it seems quite impossible, i am trying the alpha on a differenet object and i still get grenn instead of complete transparent Link to comment Share on other sites More sharing options...
manta Posted October 5, 2007 Share Posted October 5, 2007 Yes it can be done easily, couple ways, create them separately and texture them accordingly, then attach them, their two materials will become one material with different id's, or create the bottle in this case, convert to an editable poly, and pick the polys for the label, and assign the correct material to those poly's... Link to comment Share on other sites More sharing options...
Kalimero Posted October 5, 2007 Author Share Posted October 5, 2007 ok so as i understand it can be done thru one max object, the funniest thing is that i just tried my alphas with max renderer and they work OK Link to comment Share on other sites More sharing options...
Kalimero Posted October 5, 2007 Author Share Posted October 5, 2007 using a max mat in vray as a render works too(alpha looks ok) so i'll guess i'll just have to go for this solution: two objects>> one with vray mat(the bottle) and the etiquette with max mat as a separated object almost overlaping the bottle Link to comment Share on other sites More sharing options...
ipxstudios Posted October 5, 2007 Share Posted October 5, 2007 You're close - just invert the image in photoshop and it should work. Link to comment Share on other sites More sharing options...
markf Posted October 9, 2007 Share Posted October 9, 2007 If there is refraction involved with your material, in the Vray material refraction group there is an "affect alpha" check box. Try selecting this and see if it helps. Link to comment Share on other sites More sharing options...
Billabong Posted October 13, 2007 Share Posted October 13, 2007 not that it probably matters much anymore, but i have never had any luck with vray mats and alphas. In my honest opinion I don't think Vray supports alphas very well Link to comment Share on other sites More sharing options...
Kalimero Posted October 14, 2007 Author Share Posted October 14, 2007 not that it probably matters much anymore, but i have never had any luck with vray mats and alphas. In my honest opinion I don't think Vray supports alphas very well i agree. Link to comment Share on other sites More sharing options...
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