Shaders (SOLVED)(compile) Packing Error

[sir_derp]

I keep getting an error saying it can't pack a variable in a shader I've written, the shader worked fine until I updated it today to add more colors. Does anyone have experience debugging packing errors?


Vertex shader

Fragment shader

 

[sir_derp]

so I've managed to track the problem down to some combination of the following
hair_new2
hair_default2
hair_new3
hair_default3

Update:
I can confirm that trying to access any of those from the fragment shader causes the error, but hair_new1 and hair_default1 both work fine, despite all of them using the same code.

 

[sir_derp]

Okay, so I figured out the problem, it turns out I was using too many "uniform" and "varying" variables outside the main() function. Apparently there is a limit on how many your allowed to use. I solved it by hardcoding the default colors.