hi,
try to get a cut-out displacement over a " waterlevel " feature like in vray.
someone can help me get only the backside cut out…not this sawtooth of the displacing side faces . I tried to make this over material-alpha.
…this should also work for rounded displaced surfaces like at the teapot on the webside.
any better idea, or help with this sawtooth faces?
many thanks for help!
thomes
As long as you use a Raster Image and especially a .jpg file you will get jagged edges even with a pure B/W ( .JPG is the worst for jagged edges…) and you need to use a Grey Scale image as a pure B/W will not lead to good results. The Greyscale is better at controlling the Depth or Height of the Displacements…
It is better to use a 16-bit .PNG or better yet a 32-bit .EXR for any work with Displacement…
A Multi-resolution works better than a simple Subdivision Modifier and then you won’t be doubling up the modifier to try to get it smooth…
Thanks, you’re quite right, but that was not really my question. The pic is only to tryout and send the blendfile with attached maps.
My problem is… , I want to cutout the displacement…at a special depht vray called “waterlevel”, or let’s say as maybe a bit more easy task, the backfaces…
thanks for feedback and help… but bump only, no displacement and not working with texture
Because it’s set to bump only in the material settings. Set it to bump and displacement and you get displacement.
thanks, i know…after a bit screwing around, making the subdivs very high and the colour ramps to extreme i think the material of DNorman fits very good. for the jagged edges i have to look deeper in tomorrow. it seems only the subdivisions halves the jagged edges.
thanks for feedback and help!
thomes
i check it also out tomorrow, thanks for looking in !
Yes silly me, I forgot to set to displacement (or displacement and bump).
The setup will hide the jagged edges of the “waterline”, but the only way to get rid of the surface artifacts is to crank up the subdivisions.
Unfortunately displacement does need tons of geometry to look clean, I do not think there is a way around that.
Like I said a B/W will not be smooth combined with a JPG file…I fixed a copy of the JPG and set it as a Gaussian Smooth x’s several times and saved it as PNG…
Simplified Example
cant see the edges exactly…very small your picture. post a file to check. for me they seem also not very smooth
