@--E-- Your low is made of quads, which means that you cannot guarantee that a given baker or engine will interpret the triangulation of it this or that way. It can be okay in some cases (dense organic meshes for instance), but when absolute precision is needed (like here, obviously) you simply cannot afford triangulation…
Thanks for the reply guys! I really appreciate you guys taking the time to try to help me sort this out! @Joe - Yeah I've tried 4096 and 8192 maps with 8x, 16x 64x sampling, dithering on and off, soften on and off, smooth cage on and off, fix mirrored tangents on and off, all the tangent spaces padding at all different…
I can’t seem to get mirrored UVs to work 100% with tangent normal maps. I’ve tried offsetting the mirrored part outside of the 0-1 UV space. I’ve tried different tangent spaces in Marmoset and hitting the fix mirrored UVs button in Marmoset and it doesn’t seem to make a difference. There’s always a slight UV seam no matter…
@--E-- I tried playing around with these scenes and various settings and manually triangulating the mesh and couldn't get a better result. Mapping it uniquely (no mirroring) fixed it. I suspect it may have something to do with what @pior suggested, that if the low poly matched the high a bit better the seam would be less…
Hey Joe! Thanks for the reply! =) I've tried baking in Marmoset and Painter. I'm baking a 2048 texture onto just a half a sphere. If it's just not possible to fully get tangent space normal map UV seams to go away on mirrored meshes then that's just how it is but I wanted to hear it from someone who knows better than I,…
Where are you baking the normal map? Generally speaking, you may see seams at any UV seam if you zoom in far enough or if the texture resolution is relatively low. This comes down to how pixels are mapped to to UV space.
Thanks for the images. Does the issue improve if the texture resolution is increased? If so we'll know it's a resolution problem more so than a mirroring or seam specific problem.
Here's a screen shot from marmoset where this map was baked. As I said the seam is pretty subtle, but it's there. Here's a screen shot from painter where this version of the map was baked, the seam is way more apparent.