This finalize the implementation of the screen space tracing
for EEVEE-Next.
Refractive objects can now have screen space reflection too
and self reflect.
This keeps the feedback radiance buffer principle of the
Classic EEVEE so that we still get infinite bounces by default.
There are some conflict with refraction tracing and ambient
occlusion nodes. Materials using screen space refraction will
not be able to detect occlusion from any refractive surface using
screen space refraction including itself.
They also won't be visible to screen space reflections from other
materials *not* using screen space refraction.
This should be added to the list of limitations for now.
Note that the current approach to feed the radiance is to copy
the radiance buffer. This has the nice property of only containing
the currently rendered objects and not project transparent objects
or other non-yet rendered object onto the depth behind them.
Pull Request: https://projects.blender.org/blender/blender/pulls/112341
c00962d038