Question Desperately trying to fix this point light bug on my grass!

I'm using this shader and when it collides with my pointlights it becomes extremely buggy and white-purple.
https://www.patreon.com/posts/grass-geometry-1-40090373

my shader code:
https://pastebin.com/VQHj0Uuc






If anyone has an idea on how to fix this ill be eternally greatfull!

 

Blend OneMinusDstColor One

source color is multiplied by 1-Destination and added 1*Destination...

having trouble mentally seeing this but
(light * 1-grass) + grass?

OneMinusDstColor would turn green -> magenta

It kinda looks like that can be part of the issue... but the instruction confuses me as to what it was trying to accomplish

 

but do

hmmm interesting..
Do you have any idea what is causing them to glitch to white?

 

place saturate( ) around your output in fragment shader, see if it fixes it.

 

Thanks but its still not working

 

Are the normals for the mesh OK? How does it look for a Unity sphere - lit correctly?