How do I port CRT webgl effect to c3?

I noticed there still hasn't been a CRT effect plugin for Construct 3, and instead of begging someone for it I decided to try making the effect myself. I have C3IDE downloaded and I've been trying to port crt-lottes.glsl, but when I test it in C3 I get a crash and a bunch of errors.

Here are the errors I'm getting:

main.js:1933 Failed to compile shader program: Error: Error compiling fragment shader: WARNING: 0:15: 'parameter' : unrecognized pragma

WARNING: 0:16: 'parameter' : unrecognized pragma

WARNING: 0:17: 'parameter' : unrecognized pragma

WARNING: 0:18: 'parameter' : unrecognized pragma

WARNING: 0:19: 'parameter' : unrecognized pragma

WARNING: 0:20: 'parameter' : unrecognized pragma

WARNING: 0:21: 'parameter' : unrecognized pragma

WARNING: 0:22: 'parameter' : unrecognized pragma

WARNING: 0:23: 'parameter' : unrecognized pragma

WARNING: 0:24: 'parameter' : unrecognized pragma

WARNING: 0:25: 'parameter' : unrecognized pragma

WARNING: 0:26: 'parameter' : unrecognized pragma

WARNING: 0:27: 'parameter' : unrecognized pragma

WARNING: 0:425: '' : unexpected end of file found in directive

ERROR: 1:1: '' : syntax error

Here is the code I'm using:

github.com/libretro/glsl-shaders/blob/master/crt/shaders/crt-lottes.glsl

If I had to guess, I'd say that it's because I didn't add any parameters in the parameters section of c3ide, but I wasn't sure whether they were float values or not, what the default values are, etc.

Can someone smarter than me please help? xD

No takers? I've been trial and error-ing, trying different effects just to test and I guess I'm just doing something wrong but can't find the proper documentation to get me on the right track. I just want a crt filter maaan