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Official Dribble Questions.
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These pages are a copy of the official truespace forums prior to their removal somewhere around 2011.
They are retained here for archive purposes only.
Official Dribble Questions. // Archive: Tech Forum
Post by rjeff // Nov 26, 2007, 4:03am
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rjeff
Total Posts: 1260
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Ok I will take the lead with what is probably a duh question, but I like to be clear on things. Ok I assume that dribble renders the lights that I set up in TS...now things like SSS and displacement mapping, is that handeled automatically or is there a setting I need to check? |
Post by splinters // Nov 26, 2007, 9:17am
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splinters
Total Posts: 4148
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Right then, lights are rendered per the scene but their effect is different across render engines be that Lightworks, Vray or dribble.
If you assign a bump map to an object and the filter box is checked, Dribble will apply displacement. Be careful as a tiny amount (0.1) will make a lot of difference. render at 1.0 and you will get a LOT of displacement.
SSS works in one of two ways. Either use the LW translucent shader for a psuedo SSS effect (like I did with my rice pudding) or use the Dribble SSS shader which you can find in the model side reflectance shaders.
Warning, it takes a lot of tweaking to get a good effect. Use the guide Simon supplies with dribble and I will post a scene or two later to get you started. |
Post by rjeff // Nov 26, 2007, 10:38am
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rjeff
Total Posts: 1260
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thanks..I had no idea about the displacement map..I am going to start playing with dribble this week.. |
Post by Burnart // Nov 26, 2007, 11:49am
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Burnart
Total Posts: 839
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Another issue with lights is to do with area light. I find to get a good result in dribble I need to pump up the light intensity significantly between the lighworks render and a dribble render.
For a start if in a lightworks render I had fall-off set to either of the gradual fall-off methods I'd reset it to no fall-off for dribble. Also I'd increase the light intesity by a factor of 5 to 10 times depending on requirements. |
Post by rjeff // Nov 28, 2007, 5:52pm
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rjeff
Total Posts: 1260
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Ok I did a test with Dribble with some displacement. As you can see it really jumped it out. Now while this is cool, I know there is a setting to turn it down. I have looked all over the dribble inferface for a bump adjustment and I can't find one. Now I tired to adjust the AMP in the LW menu and it did not decrease the size of what you see below. Once again the dummy over here needs help. Oh and what file to I put in the start menu to auto load the lic.. server? |
Post by spacekdet // Nov 28, 2007, 6:28pm
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spacekdet
Total Posts: 1360
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Start/Programs/3Delight/3Delight license server (background)
Right-click drag this out onto your desktop. (copy)
Then move it into your startup folder-either manually, or by once again right click dragging it onto the Start/Programs/Startup.
This assumes you have drag and drop enabled in your Windows start menu.
9824 |
Post by rjeff // Nov 28, 2007, 6:56pm
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rjeff
Total Posts: 1260
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Ok got one question of the way..now I need to know about the bump thing..which I did not upload a picture to earlier.. |
Post by Burnart // Nov 28, 2007, 8:03pm
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Burnart
Total Posts: 839
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3 things I know about displacement.
The displacement strength is governed by the amplitude in the trueSpace material editor bump requester. So start by tweaking that - I generally start at .1 but I guess it depends on what you are doing.
Something else that has an effect is the edge smoothing factor - the usual tS default is 32 degrees. (Try setting it to 5 and render an object then compare that to something at 40 degrees or more and you should see what I mean.)
Also with displacement you can get some peculiar things happening if you have any SSD applied - I think its best to turn SSD objects into final meshes. |
Post by splinters // Nov 28, 2007, 10:26pm
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splinters
Total Posts: 4148
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As I originally said, displacement needs a tiny amount in dribble. Try something like 0.05 then work up to 0.1. See how that is then moveup tp 0.2, 0.3 etc.
Looks like you have something around the 1.0 mark.
Oh, you simply change the bump amplitude in the bump channel of the material editor, just as you would increase bump depth in LW...:D |
Post by jayr // Nov 29, 2007, 5:37am
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jayr
Total Posts: 1074
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for subtle displacements use 0.02 upwards, one i tried turned out like this:
http://forums1.caligari.com/truespace/showthread.php?t=3736
Not too different from a normal bump map until you look at it from another angle and you can see the effect on the geometry. |
Post by rjeff // Nov 29, 2007, 6:04am
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rjeff
Total Posts: 1260
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I think my problem is that I had the AMP set to the defalut 1, and on top of that my bump map was black with white letters. So there is the extreme for the letters as opposed to the "deep" part of it. I am going to remake the map and make the "deep" part a lighter gray istead of black and also try adjusting the AMP as well. |
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