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Render again and you should have a more defined result (Fig.13).

223_tid_image_13.jpg
Fig. 13

There are still a fair amount of artifacts, so we need to play around with some render settings to get a better result. Open the Render Setup menu, select the Renderer tab and scroll to the bottom (Press F10) Rendering > Render Setup > Renderer (Fig.14).

223_tid_image_14.jpg
Fig. 14

The settings here are very important to the quality of the displacement. The important numbers are the Edge Length and Max Displace. The Edge Length controls the number of polygons per pixel in your render, and the Max Displace controls the maximum amount of displacement you get. Since our render is relatively simple; we can set the Max Displace low and speed up our render a bit. To get rid of artifacts in our render, we need to lower the Edge Length value, Try to set it to 1 and do a new render. If you don't like the result then lower it a bit more until you get the desired result. Setting the Edge Length value too low can cause you to run out of memory and mean the render can't complete. It can also increase your render time, so keep that in mind.

Here is a comparison between Edge Length 0,2 and the default 2,0 from our first render (Fig.15).

223_tid_image_15.jpg
Fig. 15



It might also help here to adjust the strength of the displacement map in your material to get a better effect. When you're happy with the shape of the rendered mesh, it's time to add some metal shading to the result - here are some quick settings you can try (Fig.16).

223_tid_image_16.jpg
Fig. 16

That should give you a result similar to this, depending on your render scene and light setup (Fig.17).

223_tid_image_17.jpg
Fig. 17

That's it from me, but keep playing around with the material settings: create a diffuse layer with rust and dirt and add a specular map. The scene setup will be important too since metal is reflective, so maybe you need to add an environment map. There are plenty of ways to improve the look.

Thanks for reading!
 

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Readers Comments (Newest on Top)
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Milad on Sun, 19 May 2013 12:08am
Thanks, nice tut
avatar
Michael on Sun, 20 January 2013 7:14pm
I can't seem to create a plane with a sub object channel everytime i create one when i go to render to texture there is no number under the sub oject channel and i cannot select it. any help would be awesome can't seem to find anything on this
avatar
Haidoor on Sat, 28 April 2012 2:41am
very nice tutorial thank you very mach
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George on Sun, 19 June 2011 8:34pm
Unreal. Great tutorail!!!!! :D George
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Demonith on Fri, 17 December 2010 9:27am
Wow nice work :)
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Poopipe (Forums) on Thu, 16 December 2010 9:30pm
this would've been much more helpful 3 weeks ago. just sayin... :p
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