danb4026 Posted July 22, 2009 Share Posted July 22, 2009 (edited) I have to make an etched glass material (pic 1 below) that is going to be installed directly on top of a gold, highly reflective opaque material (glass with a gold backing). I have tried a couple of methods: an object with a gold reflective material applied and then another object in front with the glass jpg in the diffuse slot and an then another jpg (pic 2) in the opacity slot. I have also played with moving pic 2 into the reflect and refract slot, but I am not getting the result I am looking for. The etched portion of the glass is not coming out "white" enough. The pic below is not totally representative of the glass since it was scanned, but the "non" etched portion is completely clear. Any suggestions?? I do not have a picture of what the finished product should look like to go on. Edited July 22, 2009 by danb4026 add Link to comment Share on other sites More sharing options...
WAcky Posted July 22, 2009 Share Posted July 22, 2009 You should make reflect and refract both to completely white and put you map in the Glossy slot of the refract parameters. Link to comment Share on other sites More sharing options...
danb4026 Posted July 22, 2009 Author Share Posted July 22, 2009 James, thanks for the reply. If I just put the map in the refract/glossy slot and set refr and refl to white, I get nothing....its totally reflective. But if I also put the map in the reflect slot, I seem to get a decent result., except that the etched portion is not white...its more of a grey. Link to comment Share on other sites More sharing options...
WAcky Posted July 22, 2009 Share Posted July 22, 2009 The known way to make frosted glass is to turn down the glossy amount. So in theory the best way is to put your map in the glossy slot. I dont know why it's not working because it works for me... Link to comment Share on other sites More sharing options...
Andrew1 Posted July 22, 2009 Share Posted July 22, 2009 try adding that map in the bump map slot, see if that works.. Link to comment Share on other sites More sharing options...
danb4026 Posted July 22, 2009 Author Share Posted July 22, 2009 Here is an image showing the material. I applied it to the column on left and the fireplace flu. The fireplace sits in the middle of the room. This is a WIP so still have a bunch of things to do and add. Link to comment Share on other sites More sharing options...
WAcky Posted July 22, 2009 Share Posted July 22, 2009 Is the render above using the map in the refr/glossy slot or is the map in the refract slot? To tell you the truth the map might be the problem as its not the highest of quality. Why dont you do some testing first with a simple proceedural map like a checker map? Its always best to go back to the simplest configuration when your having issues. Link to comment Share on other sites More sharing options...
bijoy Posted July 22, 2009 Share Posted July 22, 2009 shouldnt it be a blend material...one glass material...one etched material and the etched pattern map used as an alpha? Link to comment Share on other sites More sharing options...
WAcky Posted July 22, 2009 Share Posted July 22, 2009 It doesn't have to be. It will achieve the same effect but a blend matierial might provide more control. A blend material is only going to confuse things at this stage. Link to comment Share on other sites More sharing options...
Stephen Thomas Posted July 22, 2009 Share Posted July 22, 2009 Put your map in the diffuse channel, then put in inverse of the map into reflection, refraction and glossiness as shown. Make your column, delete top and bottom faces then add a shell modifier to give it thickness. Make a multi/sub object material and make the inner faces your gold material and the outer faces the etched glass material. Link to comment Share on other sites More sharing options...
danb4026 Posted July 22, 2009 Author Share Posted July 22, 2009 James: The map is in the refrac glossiness channel, with the setup you suggested, but with fresnel reflections. The map itself is of terrible quality, but all I have to go on is the low res image provided me. I created different versions of it in PS (opacity etc) to be able to play around with. Bijoy: I haven't gone the blended material route yet, not thinking it was necessary. But will play around with that and see what happens. Stef: I am going to follow your instructions now and post the results. Link to comment Share on other sites More sharing options...
danb4026 Posted July 22, 2009 Author Share Posted July 22, 2009 Stef, would you mind showing me your material editor setup? I am not getting the refraction of the lower material, just the reflection with your settings. Link to comment Share on other sites More sharing options...
Stephen Thomas Posted July 22, 2009 Share Posted July 22, 2009 Here's a quick scene file (assuming you have 2009) with the materials. You can adjust the strength of the refraction and glossiness maps to suit. Link to comment Share on other sites More sharing options...
danb4026 Posted July 22, 2009 Author Share Posted July 22, 2009 Here is using your settings. Link to comment Share on other sites More sharing options...
Stephen Thomas Posted July 22, 2009 Share Posted July 22, 2009 Looks good, if you want the etched parts looking more white just increase the strength of the refraction/glossiness maps. Link to comment Share on other sites More sharing options...
danb4026 Posted July 22, 2009 Author Share Posted July 22, 2009 (edited) Thanks Stef....I have the refraction and refract glossiness set to 75. I bought it up to 100 but it really didnt make the white etching "whiter". Perhaps I should adjust the map itself? I am using the inverse of the map below.. Edited July 22, 2009 by danb4026 add Link to comment Share on other sites More sharing options...
danb4026 Posted July 22, 2009 Author Share Posted July 22, 2009 I changed the map for refractions and glossiness to the one below and got this result... Link to comment Share on other sites More sharing options...
Stephen Thomas Posted July 22, 2009 Share Posted July 22, 2009 I think it's looking pretty accurate. The etched parts probably wouldn't be any whiter than that anyway unless they were reflecting a light source. Link to comment Share on other sites More sharing options...
danb4026 Posted July 22, 2009 Author Share Posted July 22, 2009 I am going to add a wall washer now. Thanks for sending over that file! Link to comment Share on other sites More sharing options...
danb4026 Posted July 23, 2009 Author Share Posted July 23, 2009 Here is an updated image...thanks for all the help with that material, I think it turned out nicely. Link to comment Share on other sites More sharing options...
mfured20 Posted July 24, 2009 Share Posted July 24, 2009 Hey guys, thanks for having this discussion, its great to learn new ways of doing things. I have had to do some similar type things, but they didnt come out well. I will give this a whirl when it next comes up. thanks! Link to comment Share on other sites More sharing options...
danb4026 Posted July 24, 2009 Author Share Posted July 24, 2009 Yes, its very helpful to have this resource. Everyone is great and so willing to help, as you can see with this thread. Link to comment Share on other sites More sharing options...
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