How to include utilities from a GLSL file

Using Cinder
1

Hello,

what is the recommended method for requiring a file of GLSL functions in a vert or frag shader ?
I am using an vertex attributes shader similarly to the example _opengl/ParticleShpereGPU
The file that i wish to include has many utility functions for blending colors, ie, the PhotoshopMathFP one from here https://mouaif.wordpress.com/2009/01/05/photoshop-math-with-glsl-shaders/

2

GlslProg supports the #include statement. Check out the DeferredShadingAdvanced sample:
https://github.com/cinder/Cinder/blob/master/samples/_opengl/DeferredShadingAdvanced/assets/deferred/debug.frag

3

awesome thank you! that worked