Are CE3 real time reflections affected by UVs?

Comeback Kid

Hi guys,

Real quick question! Im currently uving a scene i plan to put into cryengine. I do however have seams running down the middle of some large assets, which will will cause a mirror effect with a cubemap and i assume look weird. However if I use real time reflections, does that depend on UVs? ie will the mirroring will be obvious with reflections? or if you have stretched uvs, will the reflections then be stretched?

One quick example, i have a modular roof piece, thats split down the middle and mirrored either side, do you guys think this is a bad idea as the cube maps/SSR will obviously look mirrored?

It could be a silly question but i thought i better ask before i uv/bake this entire scene only to find that i did it all wrong.

Let me know if i didnt make sense.

Thanks everyone.

[HP]

I don't think it will, afaik the UV's don't matter.

Comeback Kid

should i avoid doing these splits down the middle as it may mess up the cubemap?

oh and i am right in saying cubemaps work in conjuction with ssr?

however if i dont mirror some of these objects, they will need a ridiculous texture size to be consistent and i cant put a seam anywhere else. and the thing is, either side im happy to have obvious mirroring of diffuse/spec as it will be really subtle

Brendan

UVs shouldn't matter for the cubemap. Reflections are done on a per-vertex-normal basis, so as long as the seam is a soft edge (1 smoothing group) or if the verts are separate, but facing the exact same direction, you should be fine.

Other effects, like the cautistics in Cry Engine, need special UV consideration.

Comeback Kid

awesome, hopefully everything will work out then, thanks brendan

CrazyButcher

if your model has a normalmap, its reflections will depend on the tangentspace, which in turn depends on uvs (especially the uv splits). So if your shading isn't smooth, reflections won't be either.