Howdy XSIEN,
In response to your second question, even though your overall model has
plenty of polys, that small area where you want your detail does not, in
comparison with what you’re trying for. Additionally, there may be some
dithering on the jpeg if it’s resolution is not high enough as well. If you hit
‘frame’ you’ll see the uniformity of polygons and how many you’ve actually
got to work with in that area, so it’ll be clear why you can’t get a crisp
emboss.
A possible option for you is to increase the polygons in that local area either
by doing so on your lowpoly object you brought in, or if that’s not possible,
you can select only the area you know you’ll be ‘stamping’ on and locally
subdivide (by having only those polys visible, creating an edgeloop, and then
dividing…you can test first on a PM3D with ‘frame’ on to see what’s going
on).
Sorry I can’t help on the first question…I’ve had it happen just recently on
a wall I was doing as well, so I’ll be curious if there’s a fix, aside from just
going down to the lowest sub-d, smoothing, up a sub-d, smoothing, etc.
WailingMonkey