Only certain parts of material is render, please help!

[kken]

Hello guys, I am currently having some tough problem with rendering brickworks in my scene. As you can see from the picture, the top part of my brickworks are rendered accordingly with the bumps and displacement but the bottom part of the material is not rendered accordingly. Been trying to solve this problem for nearly a day but with little success.

Anyway, do comment on the brick render if someone could tip me to make a more realistic brick render. Lastly, for the bump and displacement maps, I am just using the same file that I used for the material, would that be okay? if not, how and what should I do? please advise as the tutorial manual that come with vray is not as comprehensive as it should be. I am still a new user in this software. Anyway, thank you for any replies, thanks!

[kken]

Re: Only certain parts of material is render, please help!

no help? would really appreciate it if someone could offer some help to tweak the scene, thanks!

[kken]

Re: Only certain parts of material is render, please help!

please help as I would really need to learn to tweak these setting. Without some kid friends' help here, it would be really hard why I couldn't achieve what I want to achieve here. Thanks!

[indielyness]

Re: Only certain parts of material is render, please help!

Hey bud, first thing to know is that bump maps/displacement maps should be different to the diffuse map (generally). A bump map is basically a black and white copy of the diffuse texture with high contrast, what it does is make the "whiter" parts of the bump texture "bump out".

http://www.ehow.com/how_5469555_create-bump-maps.html
that's how to make bump maps of textures.

one quick thing to improve any render though is to ensure the the uv mapping is correct, your cement floor is at an angle which looks weird, use sketchup texture editor to turn it around and increase/decrease the size. good luck.

[fpedrogo]

Re: Only certain parts of material is render, please help!

Other thing about the displacement is that the geometry with displacement material should be in a group, separate from other geometry without the displacement.