https://bugs.freedesktop.org/show_bug.cgi?id=107581
--- Comment #16 from Benjamin Hodgetts ben@xnode.org --- Looks like I lost MESA_GL_VERSION_OVERRIDE=4.5COMPAT somewhere along the line which is why I couldn't see anything. That, plus force_glsl_extensions_warn=true and your two patches does indeed work.
The starfield renders now but it's still missing the coloured cloud nebulae (this - https://cdn.cnn.com/cnnnext/dam/assets/150617071718-game-faces-no-mans-sky-n...).
So it seems your patches (and the overrides) get us most of the way there.