alpha matte problem

Area for student license holders to post questions and discuss octane.
Post Reply
foliohattu
Licensed Customer
Posts: 13
Joined: Tue Jun 23, 2020 10:21 am

Hi im doing a project and they send me a pine model.
Some of the pine needles render as this blurry alpha border.
is there a way to fix it in octane settings?
chocking the matte out will eat out small branches and detail too
attached a picture of the problem
Attachments
pine_problem.png
skientia
Licensed Customer
Posts: 205
Joined: Tue Mar 12, 2024 1:50 am
Contact:

1. Is Keep Environment enabled?
2. If not (ideally), proper "alpha" (associated via EXR not PNG, or at least TIFF) will yield expected results.
3. Worth double-checking if, in the kernel settings, Alpha Shadow is enabled (default).
Octane resources
OCTANE POSTS (URLs have changed, which will break some links but all content remains available).
foliohattu
Licensed Customer
Posts: 13
Joined: Tue Jun 23, 2020 10:21 am

skientia wrote:1. Is Keep Environment enabled?
2. If not (ideally), proper "alpha" (associated via EXR not PNG, or at least TIFF) will yield expected results.
3. Worth double-checking if, in the kernel settings, Alpha Shadow is enabled (default).
Hey Thanks million.
It was the keep enviroment. why does it do that to alpha if its left on?

I'll attatch a picture if some one is searching for this problem. Tree on the left is keep enviroment off and right one is on.
Attachments
alphaprob.jpg
skientia
Licensed Customer
Posts: 205
Joined: Tue Mar 12, 2024 1:50 am
Contact:

The link in the previous message contains answer to your question, it is a forum thread of a nearly identical case.
Is there any reason to check this option in the first place?
Octane resources
OCTANE POSTS (URLs have changed, which will break some links but all content remains available).
Post Reply

Return to “General Discussion”