Look into supporting #include for shaders

[einarf]

We should look into supporting #include for shaders.

#version 330
#include utils/functions.glsl
...

Need to figure out how to handle line numbers.

[einarf]

Done. Need to document this. We can include up to 100 levels of sources as max sanity check.

utils.glsl

// A bunch of functions

library.glsl

#include path/to/utils.glsl
#incluide path/to/utils_2.glsl
#incluide path/to/utils_3.glsl
...

test.glsl

#version 330
#include path/to/library.glsl
#include path/to/something_else.glsl

[einarf]

Example : https://github.com/moderngl/moderngl-window/blob/master/examples/advanced/shader_includes.py

[einarf]

Seriously considering revamping this one a bit.

[loreno-heer]

For some reason this seems to run into problems with includes of the form #include "somepath/somefile". In particularly when trying to include the lygia shader library and the cnoise function for example.