[ask] using bump and blend mats

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Pibuz
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[ask] using bump and blend mats

Post by Pibuz » Mon Jun 30, 2008 8:20 pm

Hi all!
I recently wanted to make a nice tile material to share, sort of a black shiny marble i saw in an interior design magazine. I once did another material of the same type, a light-brown/pinkish marble, but when i shared this someone made me notice that the joints between the tiles were shiny as the marble itself. So it was, indeed, for i had started to use indigo since such a short time that i had set a simple phong material with some bump.

This time i wanted to use a blend material (as i was suggested in the older occasion), and try to blend a diffuse material for the joints and a high-reflectance phong material for the tiles.

My problem comes out when trying to lower the joints with a bumpmap: i've tried putting the bump map in the diffuse material, in the phong material, in both of them but i can never see any bump map resulting in the render, if i blend the two materials.. :cry:

Is it possible in SkIndigo to render this mat using a blend material? and, in general: is it possible to bumpmap blend materials in SkIndigo?

Thank you!

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OnoSendai
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Post by OnoSendai » Mon Jun 30, 2008 8:32 pm

It's possible to use a bump map on one of the child materials of the blend material, in Indigo.

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kwistenbiebel
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Post by kwistenbiebel » Mon Jun 30, 2008 9:02 pm

Pibuz, I believe Whaat included making complex materials in a tutorial some time ago. Problem is, I can'tfind it :oops:

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suvakas
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Post by suvakas » Mon Jun 30, 2008 10:40 pm

This uses bump in blend material.
http://www.indigorenderer.com/joomla/in ... Itemid=107
So i believe it is possible in Skindigo.

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zsouthboy
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Post by zsouthboy » Tue Jul 01, 2008 12:11 am

Try setting the bump ridiculously high so that it would be obvious in the render that it's actually being applied..

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Pibuz
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Post by Pibuz » Tue Jul 01, 2008 12:28 am

zsouth: i've tried this way, but the render didn't show any bumped surfaces at all!

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zsouthboy
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Post by zsouthboy » Tue Jul 01, 2008 1:18 am

can you post a simple IGS with only the plane and blend material?

So we can take a look and see what happened..

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Pibuz
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Post by Pibuz » Tue Jul 01, 2008 1:20 am

Ok! :D
I'll make the scene a little simpler (as i was playing with other things, in the meanwhile :wink: ) and then i'll post the igs. Thanks! :D

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Pibuz
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Post by Pibuz » Tue Jul 01, 2008 1:33 am

So, i just post the "complex" scene with a more "sophisticated" marble. Here i have a question for Whaat: i used your great UVtools to map a chinese painting over the vases. Inside Sketch they work just fine, but when i render the mapping is all screwed up, even if i load entities and save uvmapping with SkIndigo.. Normals are ok, i checked :wink:
Attachments
im1214823816.png
im1214823816.png (361.54 KiB) Viewed 3511 times
sketch_screen.jpg
sketch_screen.jpg (96.32 KiB) Viewed 3513 times

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Pibuz
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Post by Pibuz » Tue Jul 01, 2008 2:07 am

This is a .rar file containing the .igs files of the simple scene
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test scene.rar
(9.9 KiB) Downloaded 214 times

BbB
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Post by BbB » Tue Jul 01, 2008 2:14 am

Can't help you with SU, but this could become a great scene!

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suvakas
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Post by suvakas » Tue Jul 01, 2008 2:45 am

Your bump seems to be pure black and white. I'd say blur your bump map a bit and see if it helps.

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Post by Woodie » Tue Jul 01, 2008 3:58 am

suvakas wrote:Your bump seems to be pure black and white. I'd say blur your bump map a bit and see if it helps.
Maybe the color space is not recognized by Indigo. Convert to 8-bit RGB JPG. See if this will help.

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Pibuz
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Post by Pibuz » Tue Jul 01, 2008 4:09 am

suvakas: i'll try that, thanks! ..But i thought that a black/white bump map was the best situation ever, to tell the truth.. Moreover, a kind of bumpmap like this works perfectly if used, let's say, for a simple phong material.. So, i'll try your tip but i'm not too convinced... :?

Woodie: the jpg bump sadly is already an RGB/8bit image :wink:

BbB: thanks master! i'm gonna drop this scene after this, though: it's really making me angry...

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CTZn
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Post by CTZn » Tue Jul 01, 2008 4:22 am

But i thought that a black/white bump map was the best situation ever, to tell the truth..
No no, it's the worst, really :)

Black on white = planar on planar = no slope = no effect
obsolete asset

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