Refl-type is obsolete now

[HHS81]

Since Thorsten Renk pushed the final fix for the grey-reflection issue to FGData today, the refl-type is now obsolete on the livery-files. It can be removed for the upcoming FlightGear releases 2017.2.x

[xcvb85]

I installed the new FlightGear version and now I can verify the reflection issues. Do you know how to solve this?

[HHS81]

Do you know how to solve this?

As I was involved in the whole shader thing, I think yes.
wiki explanation
FGData Commit log

The reflection cube map has a big influence, as well as the change in the code above. Another reason might be the rainbow and older pseudo-fresnel effect.
I have some good results on the EC 135 P2 here on my system, I might apply this to the Dornier 328 as well soon.

Do you use the stable releases or the devel-releases (Nightly Builds)?

[xcvb85]

My internet connection is crap so I use stable versions. The problem is fgdata, cloning the flightgear and simgear git repositories should not be a big deal.

[HHS81]

Just download this file and save it in ./ Shaders.

Then we have a common base for this issue.

[xcvb85]

OK, done.

[HHS81]

you should see a slight change with type 1

[xcvb85]

Still too much reflection on SkyWork livery if you look from behind. If you look from the side the reflection is great.

[HHS81]

@xcvb85 Reduce sim/rendering/fresnel-factor
For my eyes it is a bit too much from the side.

[xcvb85]

I set it to 0 and now it looks very nice 👍

[HHS81]

Which is not realistic... 😄
Every material in the world has fresnel effect.

[xcvb85]

Now I set fresnel-factor to 0.3 and refl_correction to -0.3 and now I'm happy with the result. What are your settings?

[HHS81]

Very similar: fresnel-factor 0.25, refl_correction -0.33. I think we can use your values if you want

[xcvb85]

I wonder what you need to do to get to a result like this:

I could imagine that you also need to adjust the hardness material factor in blender.