Stone texture maps

[pauldoherty]

Hi Guys;

Im having some serious problems getting a nice sharp stone

texture. I have some lovely tileable stones but when I create

a bump map for them in photoshop the stones end up very blurred

and flat looking once rendered.

 

Is the bump map incorrect or is it one of the channel settings????

Im using cinema 4D 8.5

 

Thanks

[bokkins]

im not sure bout this, but i think the problem is on tha angle of the camera, whatevevr bunp you put as long as the camera is almost parallel to the surface, it will always blur you matls.

[Frosty]

How about a pic?

[pauldoherty]

Hi;

Iv attached the pic.... Very early days so forgive the crudness of

the image. Alot more work to do n the textures and scene itself

but please feel free to comment on anything.

 

As you can see stone is very flat and blurry down the gable.

Is there any way to make this stone look really rough and get some

bump into it.

Thanks

[Jonathan Sanchez]

yeah I've got the same problem. Are you using Vray by any chance? It seems like the angle of the camera affects the bump mapping. Look at the scene I'm working on how the bottom right corner of the floor, the bump mapping gets blurry. I think I'm going to go with displacement instead of bump.

[Trick]

...it will always blur you matls.

No it won't !!

Just set blurring to zero and switch off filtering inside your bitmap parameters, and there is NO blurring at ALL (except for the anti-aliasing by the specific renderer, but this has nothing to do with blurring !!). To prevent Moiré effect on distant materials make a camera distance falloff variant with the non blurring bitmap for detailled bumps and color at close distance and the same bitmap, but now blurred and filtered for far distance...

 

Edit: According the last post (...VRay) I thought you were using MAX. But I strongly believe you can change filtering (mip-map) in C4D too !!

[pauldoherty]

Would it be mip - sap in C4D also please elaborate on the moire effect

and the remedy for it

[Ismael]

Aside from bitmap blurring, bump mapping needs light...

 

Check:

http://vray.info/topics/t0105.asp

http://www.chaosgroup.com/forum/phpBB2/viewtopic.php?t=10153&highlight=bump+map+showing

http://forums.cgsociety.org/archive/index.php/t-156632.html

http://www.pushpullbar.com/forums/archive/index.php/t-335.html

 

Maybe something useful there,

 

Ismael

[pauldoherty]

thanks ismael

I'll check those links out

[SunGlare]

Hi;

Iv attached the pic.... Very early days so forgive the crudness of

the image. Alot more work to do n the textures and scene itself

but please feel free to comment on anything.

 

As you can see stone is very flat and blurry down the gable.

Is there any way to make this stone look really rough and get some

bump into it.

Thanks

 

Dear Paul.

It is the second image of Yours and I'm thinking maybe Your monitor is out of colors, because what You're posting is very saturated.

But maybe its just me. And mine monitor.

Or maybe its the weather, I read that where you live, very saturated colors are popular, to compensate very cold color spectrum, [shifted to blue] caused by the clouds.

 

I didnt meant to offend but just to point the color problem.

[pauldoherty]

No offense takin... Both scenes are work in progress.. Im just

learning about radiosity also at the minute and trying to find

a suitable setting for good lighting to time ratio.

 

I doubt if its the monitor.... just my inexperience... so any advice

on how to remedy this problem. Im using cinema 4d 8.5