Thanks for the quick reply,
The code I mentioned above is actually from M*_VolumeRayMarch_Lit_LinearSteps_IBL_ModTexture, *so I guess Ryan’s code uses 2 additional textures to get the image based lighting, and modulation effect (?) (which to be honest, I don’t really need). But this IBL ray march material doesn’t compile, and I wonder why. If you don’t mind trying the code and see if it compiles for Android on your end, no worry if you don’t really have time for it though, I know we are all busy 
For now, I will keep playing with it in your suggested direction, and see how things go. And look forward to your plugin too
Thank you.