displacement maps on shader domains? - Polyloop

medeamajic · 21st January 2007, 12:26

I can use the shader domains to make on part chrome and the other part gold. I want to make use of a displacement map on a certain shader domain. I see the displacement tab at the top of the shader tree. Is there any way to get displacement tabs for each domain? I could not get a second displament tab using the layer tool either. I can use the layer tool and use the bump channel but it does not go deep enough for me. How can my displacement map be aplied only to the green domain instead of the whole cube or can it be done with a simple layer tool using a displacement map some how? I thought the layer tool or shader domains would work with seperate displacement maps for each. In the end the one shader should be gold and the other chome. It is blue an green now. Any info will help.

bwtr · 21st January 2007, 14:34

Try?

In the vertex modeller, delete the appropriate polygons from the box equal to the shader domain area.

Then fit a sized plane into that area as a separate shadable/displacable item.

bwtr · 21st January 2007, 16:33

Without having to access the plain

jbshorty · 21st January 2007, 16:50

This is something i tried to do a while back. It seems there's no way to do this effectively without seperating domains into seperate meshes (as Brian mentioned). I think the limitation is because the real mesh vertices must be moved physically at render time. How can you displace a vert (and simultaneously NOT displace it) when it's shared by two domains? Should not be possible...

bwtr · 21st January 2007, 18:59

Having troubles with my theory both in Carrara Vertex room and Hexagon.

More fun working this odd one out tomorrow.

My first idea with making a plane to fit may be it after all.

bwtr · 21st January 2007, 19:13

So much for sleep!

YES first ideas were best. Both a quick and simple way to go.

bwtr · 21st January 2007, 20:31

Well I can always sleep another day.
That was a good learning exercise for me.

medeamajic · 21st January 2007, 23:41

Thanks for the info guys. I know I can copy and paste parts of an object and the group them later. I just thought that there might be a way to add more displacment tabs. The only thing I was going to mention is that for layers it mentioned UV mapping. I am not sure what UV mapping is used for. I have added layers before but I don't think I used UV mapping. What would UV mapping do? Anyone know about UV mapping?

I hope we get 3-D paint in version 6 that will let us add texture maps onto the painted areas.

bwtr,

Thanks for the screen shots. You seem to be very good with the shader tree of Carrara.

rickei · 22nd January 2007, 00:05

i think displacement only works in the global shader and not on the layers
So you would have to UV map the object and apply the displacement as a texture map to the global shader. the UV map is where you can control where the displacement goes.

then you can add the gold and silver as procedurals on the different layers.

I'll do some test later.

rickei

bwtr · 22nd January 2007, 05:34

mediamajic--what I know about using the shader tree fits in a thimble.

HOWEVER, if you fiddle away for long enough, sometimes, something works!

As yet, I have trouble remembering how I actually arrived at those "useful" results. I spend hours experimenting. Fun stuff!

21st January 2007, 12:26	#1 (permalink)
medeamajic Now, I learn animation Join Date: Sep 2005 Posts: 1,028	displacement maps on shader domains? I can use the shader domains to make on part chrome and the other part gold. I want to make use of a displacement map on a certain shader domain. I see the displacement tab at the top of the shader tree. Is there any way to get displacement tabs for each domain? I could not get a second displament tab using the layer tool either. I can use the layer tool and use the bump channel but it does not go deep enough for me. How can my displacement map be aplied only to the green domain instead of the whole cube or can it be done with a simple layer tool using a displacement map some how? I thought the layer tool or shader domains would work with seperate displacement maps for each. In the end the one shader should be gold and the other chome. It is blue an green now. Any info will help. Attached Thumbnails

21st January 2007, 16:33	#3 (permalink)
bwtr Brian Join Date: Jul 2005 Location: South Australia Posts: 2,094	Without having to access the plain Attached Thumbnails

21st January 2007, 19:13	#6 (permalink)
bwtr Brian Join Date: Jul 2005 Location: South Australia Posts: 2,094	So much for sleep! YES first ideas were best. Both a quick and simple way to go. Attached Thumbnails

21st January 2007, 20:31	#7 (permalink)
bwtr Brian Join Date: Jul 2005 Location: South Australia Posts: 2,094	Well I can always sleep another day. That was a good learning exercise for me. Attached Thumbnails

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21st January 2007, 14:34	#2 (permalink)
bwtr Brian Join Date: Jul 2005 Location: South Australia Posts: 2,094	Try? In the vertex modeller, delete the appropriate polygons from the box equal to the shader domain area. Then fit a sized plane into that area as a separate shadable/displacable item.

21st January 2007, 16:50	#4 (permalink)
jbshorty proud to be a nurb Join Date: Jul 2006 Location: only in your mind Posts: 1,362	This is something i tried to do a while back. It seems there's no way to do this effectively without seperating domains into seperate meshes (as Brian mentioned). I think the limitation is because the real mesh vertices must be moved physically at render time. How can you displace a vert (and simultaneously NOT displace it) when it's shared by two domains? Should not be possible...

21st January 2007, 18:59	#5 (permalink)
bwtr Brian Join Date: Jul 2005 Location: South Australia Posts: 2,094	Having troubles with my theory both in Carrara Vertex room and Hexagon. More fun working this odd one out tomorrow. My first idea with making a plane to fit may be it after all.

21st January 2007, 23:41	#8 (permalink)
medeamajic Now, I learn animation Join Date: Sep 2005 Posts: 1,028	Thanks for the info guys. I know I can copy and paste parts of an object and the group them later. I just thought that there might be a way to add more displacment tabs. The only thing I was going to mention is that for layers it mentioned UV mapping. I am not sure what UV mapping is used for. I have added layers before but I don't think I used UV mapping. What would UV mapping do? Anyone know about UV mapping? I hope we get 3-D paint in version 6 that will let us add texture maps onto the painted areas. bwtr, Thanks for the screen shots. You seem to be very good with the shader tree of Carrara.

22nd January 2007, 00:05	#9 (permalink)
rickei Respect the Dawg! Join Date: Dec 2005 Location: USA - Conway, South Carolina Posts: 791	i think displacement only works in the global shader and not on the layers So you would have to UV map the object and apply the displacement as a texture map to the global shader. the UV map is where you can control where the displacement goes. then you can add the gold and silver as procedurals on the different layers. I'll do some test later. rickei

22nd January 2007, 05:34	#10 (permalink)
bwtr Brian Join Date: Jul 2005 Location: South Australia Posts: 2,094	mediamajic--what I know about using the shader tree fits in a thimble. HOWEVER, if you fiddle away for long enough, sometimes, something works! As yet, I have trouble remembering how I actually arrived at those "useful" results. I spend hours experimenting. Fun stuff!