Raspberry Pi Forums

Some work, some don't.

We have people working on increasing the support in this area, but some of these shaders require huge amount of memory and very powerful GPU's.

A strange thing.

The shader I linked in the first post works on RPi3 and doesn't work (displaying a black screen) on RPi4

Try this one.
http://editor.thebookofshaders.com/
The GLSLViewer works as well.
I'm using Gentoo64 so other OS users experience might vary.

Kodelife works too but could not handle the cloud /smoke example.
Probably some slight difference in GLSL handling.

Anyway The Book of Shaders seems to be on my wavelength.
But it stops just when it is getting really interesting
Still there is enough to keep me busy for a few years.