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Sol 2.1.3

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Please notice !!!
Sol does not bring rain into AC.
CSP is doing this. Actually rainFX is in development.
RainFX previews are available at Ilja Jusupov's Patreon account.
Sol 2.1 has an advanced control of rainFX already integrated...
For more information, maybe you like to watch this

DO NOT set a higher value than "Two faces per frame" in reflections frequency:

Also lower the resolution to 1024x1024. There is no big difference visually, but it gains much more fps...
For those weather effects, you need to set the cloud's render method to 2 in Sol Config app. Then the advanced skysim weather code is running.
Your track textures are not looking like they should look.

Its actually not an error, its a feature, called "seasonal adjustments". With CSP it is possible to change the track's textures to other colors. There is a problem with CSP versions between 1.30 and 1.38, so the textures looks much darker than they should look. This is fixed with CSP version 1.39.
CM just uses the current date for the race session. If its wintertime where the track is located, textures will be changed to look like they have a snow cover.
Change the date to summertimes
In CM's Drive menu:

or directly in game:
Open the Sol_weather app and change the date:
The default Sol filter. You can change all Sol parameters. This filter has a static exposure, which is adapted for daytimes. The filter has a neutral color balance.

The filter tries to have an optimal exposure for all situations. It uses a custom Autoexposure. CSP’s emissive and bounced lights are dynamically optimized for day and night light.The filter also adapts the color balance for different light situations.

A clone of __Sol_Extra. This filter works with the Reinhard tone mapping. The goal is to have less contrast in mid and high tones.

A filter for very bright monitors. It uses SDR dynamic and emulates some HDR effects.

This filter represents the colors with an accuracy of 98%, if a sunangle of 45° is used. It uses the linear tone mapping to achieve this accuracy. Therefore, bright colors will clip.

This filter uses sensitometric tone mapping. I realized a proper gamma to be color-neutral for a wide range. In high tones (>220) it will compress, this prevents clipping.
You can customize Sol ingame with the Sol_config app:
Please install Sol manually, as it is described in the guide!


Sol is a weather simulation system for Assetto Corsa/Shader Patch

Please read the install guide
Sol 2.1 install guide
Sol 2.1 installatiehandleiding (by jfeelders)
Sol 2.1 guida di installazione (by Roberto Geminiani)
Sol 2.1 guia de instalacion (by javire)
Sol 2.1 suomi install guide (by heli_is_for_noob)

There you will find all information about installing it, important settings to make in CM, new features and how to do troubleshooting...

Thanks to Sir Spats, who made an install tutorial and a new feature description:

How well performs Sol 2.1.x ???

You are not allowed to commercially use Sol without permission!

If you want to support Ilja, the genius who made all this possible:
CSP: https://www.patreon.com/x4fab

If you want to support me as a patreon:

For support and beta versions, visit Sol's discord channel as well:

Latest updates

  1. Sol Planner bugfixes and others

    Sol 2.1.3 Please read the install guide Sol 2.1 install guide Sol 2.1 installatiehandleiding...
  2. Bugfixes, better overcast look, fixed bad weather graphics

    Please read the install guide Sol 2.1 install guide Sol 2.1 installatiehandleiding (by...
  3. Bugfixes and tweaks...

    Sol 2.1.1 It includes some new features, which will work automatically if CSP 1.75 is released...

Latest reviews

sol looks briliant , its easy to download to content manager nut after that and even after reading install i still could not get it to work ,i gave up after 4 hours of trying to copy and move files and in doing that i accidently removed files or move files and then content manager would not let me drive anything , even verify ac steam files, in the end i deleted everything and reinstall assetto corsa on steam and content manager, i still think its brilliant and i have no problem paying for mods but there should be an easier way to install sol ,its simple to install tracks and cars lol
Peter Boese
Peter Boese
Please read the install guide! There are some issues with CM, so you cannot drag'n'drop it directly to CM. Just copy the 4 folders from the archive "apps", "content", "extension" and "system" in your AC root folder (the folder where AC is installed). Thats it! Its a thing of a minute...
SOL is amazing and one of the main reasons why I still race in AC. The graphics are great without affecting the framerate too much/at all. Many thanks for creating this excellent weather mod and pp filter. Much appreciated!
Wow!!!. I have upgraded from vers 1.4 . What a change - amazing. Thank you so much Peter!!!
Over the Top .!
Is there a way to download the 1.6.2 version of the Sol Mod?
Peter Boese
Peter Boese
Sure, just have a look at Sol's Discord Server:
Along with CM and CSP a must-have, and works great. Although I think there should be more rain with thunderstorm settings.
Peter Boese
Peter Boese

With Sol Planner app, you can set the rain amounts yourself....
Just released - A guide to SOL and CSP Interactions with Assetto Corsa. https://youtu.be/UO6kayPee2k
It's a wonderful mod, thanks. By the way, how can I make the side menu bigger so I can play at 4K resolution and see it correctly. Greetings and thank you.
The flexibility this mod provides is just absurd, weather, day/night, etc. However, I wonder why it makes my sun look like a pea with no glare with everything but the sol extra reinhard and default ppfilters
Peter Boese
Peter Boese
its because of the different tonemapping functions. Most of the ppfilters use function 2 "sensitometric" tonemapping. With it, colors burn out to white, if they are bright. So the sun will get white also and the glare effect can do its magic. Glare effect just reacts to white color.

But the extented Sol ppfilters like Extra and Reinhard using a different tonemapping, to prevent this color burnout. So they can reproduce colors with a higher precision. But then the very saturated sun gets no glare effect, because it stays very saturated also with high levels.

Atm the saturation of the sun's shape can not be manipulated individually. But with newer CSP versions, this will be possible and then the glare effect is back.

i hope this was not too nerdish...
first thing I install after content manager.
Been using sol-extra. Sol itself is great and the weather and time switcher is amazing. After using so many other filters and liking this 'extra' one heaps (and flitting with the hdr one) first I have returned to it and its full time use. Technically it is the best and its just also balanced for the eye. It actually looks the best is what I am saying. Without trying to detract from preference because I did use a lot of others so its not that they're not good - just this is too good.
Peter Boese
Peter Boese
Thank You!

So if you like that eye balancing with a PPfilter, the __Sol_HDR filter is at least the way to go. If you have an HDR monitor, you should waste no time staying in SDR.
For me HDR in AC/CSP was realy a revelation what is possible today, to show sceneries which looks absolute realistic, not in a photorealistic way, but in an eye-realistic way.

ATM I'm working on the __Sol_HDR filter version 1.3. It has a very own colorgrading LUT inside, which gives a special tonemapping, to prevent the burnout of colors and it gives redtones a very natural look. This will bring AC to the next level of eye-reality...
Good as expected
Danke, das ist einfach schön!
Thanks Peter, for all improvments in this mod.
thx !
Thank you
Thank you for your amazing work!!
Once again thankyou for all your hard work.
Peter Boese
File size
244 MB
First release
Last update
User rating
4.90 star(s) 867 ratings

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