mesh disappears in render when it is far from camera

[HSDSZ]

Malt version

node-groups-latest

Blender version

Blender 4.0

OS

win 11

Hardware info

intel i5-12400F RTX3060Ti

Issue description and reproduction steps

distance between 2 trees are around 55m

leaves of the tree far from the camera disappear

render in malt

render in eevee

Attachments

bug file
https://www.dropbox.com/scl/fi/qvaqh2zo36h0lxqrklmwf/disappearing-leaf.zip?rlkey=5z2aohx3i4umgfhjjzhndqpbx&dl=0

[HSDSZ]

I have tried every rendering setting, doesn't help. I think it is a bug not a setting problem

[pragma37]

I have tried every rendering setting, doesn't help. I think it is a bug not a setting problem

Nope, this is an issue with your setup. There are way too many things going on here, that's why it's important to take the time to set up a minimal reproduction file.

Long story short:
EEVEE is not actually using transparency at all (just zoom into the leaves to check it).
If you remove transparency from Malt or properly set up transparency in EEVEE (and remove the Kuwahara filter from Malt, and apply the same cutout value) you'll see the same results.
Applying an alpha cutout to interpolated mipmapped textures is always going to cause this kind of issue:
https://www.google.com/search?q=vegetation+alpha+mipmaps
The simplest solution in Malt is to disable Smooth Interpolation on the Image node (you can pre-apply the Kuwahara filter in Krita, for example).

[HSDSZ]

Wow. many thanks for the explantion and the link