Anim8or Community

General Category => General Anim8or Forum => Topic started by: CoriDavis on January 29, 2011, 02:05:41 pm

Title: My bumpmap is upside down! ):
Post by: CoriDavis on January 29, 2011, 02:05:41 pm

I tried everything to fix it. is my only option to turn one of my picture files upside down?

Title: Re: My bumpmap is upside down! ):
Post by: siragin on January 29, 2011, 02:53:19 pm

what is everything?if your bump map is upside down you can either flip the image file that you use as a bump map or flip the uv coordinates.

Title: Re: My bumpmap is upside down! ):
Post by: CoriDavis on January 29, 2011, 03:17:45 pm

I'll just flip my file. what I want to know is what caused this.

Title: Re: My bumpmap is upside down! ):
Post by: 3D Joe Wiltshire on January 31, 2011, 02:03:26 pm

can't you just set the value as -100?

Title: Re: My bumpmap is upside down! ):
Post by: ENSONIQ5 on February 01, 2011, 02:29:42 am

This is a bit odd CoriDavis, I haven't seen this before.  If the bumpmap and colour images are oriented the same, they should apply the same to the object, rather than one being rotated 180 degrees or flipped vertically.  It alsso looks like some faces are reversing the bumpmap ('in' rather than 'out').  If you are ok with sharing it, maybe you could post the .an8 file, and the colour and bump images, so we can have a bit of a fiddle with it and maybe work out what's happening.

Title: Re: My bumpmap is upside down! ):
Post by: CoriDavis on February 01, 2011, 03:52:31 pm

Here are my files, the medallion object and its texture files. (the original was a .bmpfile, but it wouldn't let me post it so I had to convert it to .jpg)

Title: Re: My bumpmap is upside down! ):
Post by: lynn22 on February 01, 2011, 06:09:40 pm

I haven't looked at your an8 file but from your pictures it's obvious that your bump map is upside down, the skull stands on its head ;)

If you turn it around 180 degrees then it should work

Title: Re: My bumpmap is upside down! ):
Post by: CoriDavis on February 01, 2011, 06:45:06 pm

Nooo... that bumpmap IS supposed to be upside down because when it's right-side-up, it's upside down in the render

Title: Re: My bumpmap is upside down! ):
Post by: lynn22 on February 01, 2011, 08:34:41 pm

Yeeees, your texture and your bump map should be applied the way it should look, i.e. for your medallion the teeth of the skull should be at the bottom.

I fixed your file and zipped it up together with the texture and bump map files -  see render - when you applied your texture you should have clicked the UV button and turned your texture around so it looked the right way.

Title: Re: My bumpmap is upside down! ):
Post by: CoriDavis on February 02, 2011, 03:25:16 pm

that's odd. maybe it was just some crazy thing wrong with my computer that made the image be flipped (when both pics were right side up)

Title: Re: My bumpmap is upside down! ):
Post by: daniel99 on February 04, 2011, 06:44:55 pm

hey lynn22. It seems like in your render there is a texture error to. If you see it, just next to the top ot the medallion. If I remember right, I had this problem once, when I made a moving face. Maybe is a error that has no solution, or an error of anim8or texturing. If someone could find a solution, would be good for people who will have this problem in the future.

Title: Re: My bumpmap is upside down! ):
Post by: CoriDavis on February 04, 2011, 09:01:03 pm

yeah, I see it too. only I can't merge the faces to get rid of that

Title: Re: My bumpmap is upside down! ):
Post by: ADSohr on February 08, 2011, 01:18:05 pm

That might be an artifact from using more than 5 edges to a vertex.  It looks like you have one single vertex in the middle with about 25-30 edges radiating from it to the edge.  That's known to cause all sorts of pinching and shading issues. 

Maybe show us a wire-frame, so we can see the mesh structure better.  I may be wrong; it's hard to guess topology on a flat plane.