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1. Pieces With Mirrored UVs Have Normal Errors In July xNormal Workflow

   

   Topic by TychoVII · Aug 2012 · Home› Unreal Engine

   This is a continuation of this thread. I'm using the new xNormal workflow in the July UDK build to achieve normals without shading errors on a model with 1 smoothing group, but a problem arrises for all my pieces that have been mirorred/symmetried that share the same UV space. When I flipped the green channel, the normals…

2. Re: Pieces With Mirrored UVs Have Normal Errors In July xNormal Workflow

   

   Reply by TychoVII · Aug 2012 · Home› Unreal Engine

   Just a static mesh. This model won't be intended for anything fancy, I just need it to look correct with a basic UDK setup.

3. Re: Pieces With Mirrored UVs Have Normal Errors In July xNormal Workflow

   

   Reply by TychoVII · Oct 2012 · Home› Unreal Engine

   No worries man! It was an excellent idea. Guess we just can't rely on this synced pipeline yet :(

4. Re: Pieces With Mirrored UVs Have Normal Errors In July xNormal Workflow

   

   Reply by JamesWild · Oct 2012 · Home› Unreal Engine

   Ah sorry about that man I was hoping that might be a functional workaround.

5. Re: Pieces With Mirrored UVs Have Normal Errors In July xNormal Workflow

   

   Reply by TychoVII · Oct 2012 · Home› Unreal Engine

   Ahh I see now. That's a pretty clever idea. I did this to my unwrap: Unfortunately it still didn't seem to have an effect. I brought it into Unreal and those mirrored pieces were definitely in the wrong UV space, so I know I imported it correctly. I then changed their Address X to mirror on the normal map and the pieces…

6. Re: Pieces With Mirrored UVs Have Normal Errors In July xNormal Workflow

   

   Reply by JamesWild · Oct 2012 · Home› Unreal Engine

   I have no idea if it'll actually work or not, just an idea.

7. Re: Pieces With Mirrored UVs Have Normal Errors In July xNormal Workflow

   

   Reply by cptSwing · Aug 2012 · Home› Unreal Engine

   Are you importing as Static or as Skeletal mesh? The latter can leave you in a world of pain, as I've found out recently ;-)

8. Re: Pieces With Mirrored UVs Have Normal Errors In July xNormal Workflow

   

   Reply by JonathanLambert · Oct 2012 · Home› Unreal Engine

   Yeah, I've pretty much given up on using the synced pipeline for meshes that use mirroring and just bake those out in max. I'll have to give your method a try.

9. Re: Pieces With Mirrored UVs Have Normal Errors In July xNormal Workflow

   

   Reply by JamesWild · Oct 2012 · Home› Unreal Engine

   If you're not importing the tangents you're throwing away the synched pipeline AFAIK. Try moving the mirrored geometry's UVs 1.0 along U as above, flipping around 1.5 on U, and then setting the textures' repeat type to mirror wrap. It should re-invert the tangents causing the problem. Though I don't know for sure as this…