Board index FlightGear Support Graphics

Cloud realism and distance tweaking

Graphics issues like: bad framerates, weird colors, OpenGL errors etc. Bad graphics ar usually the result of bad graphics cards or drivers.
Forum rules
In order to help you, we need to know a lot of information. Make sure to include answers to at least the following questions in your initial post.

- what OS (Windows Xp/Vista, Mac etc.) are you running?
- what FlightGear version do you use?
- what graphics card do you have?
- does the problem occur with any aircraft, at any airport?
- is there any output printed to the console (black window)?
- copy&paste your commandline (tick the "Show commandline box on the last page of FGRun or the "Others" section on the Mac launcher).
- please upload a screenshot of the problem.

If you experience FlightGear crashes, please report a bug using the issue tracker (can be also used for feature requests).
To run FlightGear on old computers with bad OpenGL support, please take a look at this wiki article. If you are seeing corrupted/broken textures, please see this article.

Note: If you did not get a reponse, even after 7 days, you may want to check out the FlightGear mailing lists to ask your question there.

Cloud realism and distance tweaking

Postby xen_steda » Tue Feb 11, 2020 10:34 pm

Hello, as a preface, I am extremely happy with Flightgear as a flight sim. The weather system is incredible in detail and in how clouds are displayed.

I would like to know if anyone has any advice on producing the best clouds in Flightgear using the menu options or even by adjusting application files.

I am experiencing a small visual "glitch" where the clouds will follow the view of the pilot. For example, if I were to rotate my pilot's view from the left to right, any clouds in view would change their position in a strange way to follow the angle of the pilot.

Also, I have experienced a sort of visual "cliIpping" when inside a cloud layer that will abruptly cut off the cloud boundary when viewing close to the aircraft.

If there is no way to actually stop these very small issues, it is not the end of the world, just curious how people with decent computer rigs have their clouds set up. Thanks!
Posts: 234
Joined: Sun Jan 05, 2020 3:53 pm

Re: Cloud realism and distance tweaking

Postby stuart » Wed Feb 12, 2020 8:22 pm

Hi xen_steda,

These are both known artifacts from the way that the clouds are built up out of individual "billboarded" textures. So unfortunately there is no way to stop these issues short of completely redesigning the clouds to use volumetric techniques.

User avatar
Posts: 1560
Joined: Wed Nov 29, 2006 9:56 am
Location: Edinburgh
Callsign: G-MWLX

Re: Cloud realism and distance tweaking

Postby xen_steda » Wed Feb 12, 2020 9:22 pm

Thanks for the info it's good to know.
Posts: 234
Joined: Sun Jan 05, 2020 3:53 pm

Return to Graphics

Who is online

Users browsing this forum: Applebot [Bot] and 1 guest