Apologies for another newbie question. I'm experimenting with something that will eventually be a quilted airbag for an airship. As a test, I have a shader applied to a spline object that is the airbag. (The shape is simple at the moment but will eventually have some notches for ropes.) As a test, I have a simple texture loaded into both the color and bump channels. The trouble is that the two don't line up. You can sort of tell in the preview window that they are offset. I've ctl-dragged the color channel to the bump channel so I was assuming they'd be treated identically. The shader shown is the basic one but I've also tried various parametric mapping modes without any difference. It seems like the UV space/offsets for the different channels are different but I don't see anyway to adjust this. Hopefully, I'm missing something simple. Thanks for any help, Marc

To answer my own question (sort of), it appears to be the "seamlessly" switch. Using a different pattern that shows orientation (that looks like a "4"), I found that in the color channel, setting 'seamlessly' seems to tile out the color map in all four orientations. However, it doesn't seem to have this effect in the bump channel which is why the two misregistered. The attached picture uses a shader with an elevation mixer to show bump only on left and bump+color on the right with "seamlessly" set for both channels. The color tiles are rotated while the bump tiles never are. Clearing "seamlessly" gets everything lined up. So, I have the answer to my question. Just didn't realize how 'seamlessly' worked differently between color and bump. Is this intentional? Or a bug? I didn't see it in the bug list. Marc

There's no bug. The color and bump channels always line up for me even when using "tile seemlessly" for both (which I do often).

Hmmmm... interesting. Not sure why they aren't lining up for me. I can live without 'seamlessly' by manually doing the seamlessness but as you can see in the picture they don't align for me. Maybe I broke something with one of my plugins. Marc

May not actually be the problem, but in the first image you have the bump amplitude set at 250%. Bump will fall apart visually for many models at anything over 100% (I often use 10%-25%).

I had the bump cranked up when I was trying to debug the problem. I just tried taking it down to make sure it isn't the cause and it looks like it doesn't effect it. Basically, for me, clicking "seamlessly" for a tiled texture map in the bump channel doesn't seem to do anything. It does work in the color channel. Haven't experimented with other channels. I recently installed the 'fishnet' shader plugin and may uninstall to see if that is the problem. I'm not using it in the shader but who knows. Thanks for the warning about bump >100%, though. I'll keep it in mind. And it was worth checking to see if that was the issue ;-). Marc

This is a very bizarre problem. I've never personally seen it nor have I ever heard of it here in the forum. Can you email me the file? Maybe you could also send it to Eovia. This is very strange. -Kix

-Kix

Hi, Kix, (Guess I can't post the .car so I'll email it). However, it is simple for me to create this from scratch. Given how reproducible it is for me and the fact that no one else sees this, it must be something to do with a bad plugin or a corruption in my files rather than a carrara bug. I'm using digitalcarver's anything grows, anything grooves, starbright, zenstar and fishnet. Maybe it is just a fat-finger problem. If not I'll try dropping some plug-ins to see if that fixes it or a complete re-install (ugh). Thanks, Marc

Hi, all, For the sake of anyone looking at this thread latter and for completeness, looks like Kix was able to duplicate this. I filed this with Eovia and they have opened a bug report on it to fix in a latter release. Marc