sprite drop shadow shader: batching support?

[unitycoder]

would need batching support for sprite drop shadow, if possible?
https://forum.unity.com/threads/drop-shadow-shader-for-sprites.449123/#post-5969147

shader
https://github.com/UnityCommunity/UnityLibrary/blob/master/Assets/Shaders/2D/Sprites/SpriteDropShadow.shader

[unitycoder]

probably not then

Any shader based technique will mean no batching. There's no way around that. If you want drop shadows and batching, you'll need to do the drop shadows manually as their own individual sprites.

https://forum.unity.com/threads/drop-shadow-shader-for-sprites.449123/#post-5969432