Help vegetation transparency

I have this problem as you can see in the pic central leaf must be in top of all but is behind the branches and other leaf. Some leafs are ok, some dont. This problem happen also in unity boat attack demo. Im using URP lit transparent, If i put opaque all is fixed, but plants dont look that good. Since in not a programer i ask for a fix I did the shader in shader graph.

 

Fast and efficient sorting of arbitrary transparent surfaces is an unsolved problem for real time rendering. What you're seeing is unfortunately as good as it gets for sorting of a single model with the URP. You have to choose between transparency w/ incorrect sorting, opaque w/ correct sorting, or break up the model into multiple game objects that Unity will attempt to sort individually, though this is still no guarantee they'll sort properly.

There are a handful of other mitigation techniques, almost all of which URP & Shader Graph make difficult / impossible to implement.

One of the more basic options would be to render the object twice using separate opaque and transparent materials. Not using Shader Graph this could be implemented in a single shader two two passes, but Shader Graph does not allow for the creation of multi-pass materials or enough control of render state per-pass to make this possible. So it'd have to be done with two separate shaders & materials. And note this only ensures the areas that are fully opaque sort correctly, the transparent parts will still sort incorrectly. Again, there is no 100% solution to that problem that can be used with the URP.

 

If you are rendering with MSAA enabled (which I assume you are), then an easy solution is to disable blending on your plant shader and instead use https://docs.unity3d.com/Manual/SL-AlphaToMask.html

 

looks like all is fixed in 2021 and the updated URP