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Post your candidate for the SOTM contest of January 2018!

Monthly contest to select the best FlightGear screenshot.

Re: Post your candidate for the SOTM contest of January 2018

Postby legoboyvdlp » Fri Dec 08, 2017 3:16 am

Nice one... :)

But again, you need to convert it to jpg.

Any .pngs will not be entered in the poll! Check your screenshots, make sure they are .jpgs!
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Re: Post your candidate for the SOTM contest of January 2018

Postby Octal450 » Fri Dec 08, 2017 3:20 am

I don't get it -- what the problem with PNG?

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Re: Post your candidate for the SOTM contest of January 2018

Postby wkitty42 » Fri Dec 08, 2017 4:01 am

generally they are too large and slow to load...
"You get more air close to the ground," said Angalo. "I read that in a book. You get lots of air low down, and not much when you go up."
"Why not?" said Gurder.
"Dunno. It's frightened of heights, I guess."
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Re: Post your candidate for the SOTM contest of January 2018

Postby Thorsten » Fri Dec 08, 2017 6:05 am

I don't get it -- what the problem with PNG?


Try looking at them from a weak internet connection, and you'll realize immediately. If you have a gallery with 10 pngs, you can make yourself a cup of coffee before they're all loaded.
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Re: Post your candidate for the SOTM contest of January 2018

Postby wkitty42 » Fri Dec 08, 2017 10:27 am

and that's starting with a pot of cold water ;)
"You get more air close to the ground," said Angalo. "I read that in a book. You get lots of air low down, and not much when you go up."
"Why not?" said Gurder.
"Dunno. It's frightened of heights, I guess."
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Re: Post your candidate for the SOTM contest of January 2018

Postby N-SCOT » Fri Dec 08, 2017 12:24 pm

Note: PNG converted to JPG...

G

Side note: on the speed over the net argument for JPG vs. PNG, why are the image files that are used in most aircraft all PNG or RGB? I agree, JPG is more efficient. Curious as to why it's not a default. Is this merely historical latency, or are there other more technical reasons? Seeing this is probably a thread buster, anyone who know the answer shoot me a PM.
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Re: Post your candidate for the SOTM contest of January 2018

Postby legoboyvdlp » Fri Dec 08, 2017 3:11 pm

N-SCOT, I don't mind, maybe it can be split if the thread goes further off topic, but it is relevant to this thread IMO...

.jpgs do not support transparency and lose a lot of quality each time they are encoded --> see https://www.turnkeylinux.org/blog/png-vs-jpg.

But it should be possible to use .jpgs in FlightGear, if you do not need transparency. Perhaps some 3D / 2D experts could help us as to whether this is even possible?

I'll maybe try converting some IDG-A32X textures to .jpgs (keeping the "master" as .png), and see what I notice.
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Re: Post your candidate for the SOTM contest of January 2018

Postby LesterBoffo » Fri Dec 08, 2017 3:55 pm

If we were able to only use .jpgs as 3D textures we would lose having alpha channel transparencies for propeller blurs, also certain fine details are better rendered as alpha masks and ground material shader effect masks. The mask encoding is just one of a few reasons why .png's are a bit heavy on video processing. The other is that .jpg's are often less refined and tend to de-rasterize converted images, compressing the data and in the process blurring and generally muting details.
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Re: Post your candidate for the SOTM contest of January 2018

Postby Neilson » Tue Dec 12, 2017 4:42 pm

BAE HawkT2 Close Formation UK

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Re: Post your candidate for the SOTM contest of January 2018

Postby Thorsten » Tue Dec 12, 2017 6:39 pm

Side note: on the speed over the net argument for JPG vs. PNG, why are the image files that are used in most aircraft all PNG or RGB?


Because what matters more for textures is how fast the OSG loader can get them from your harddisk to the graphics card, not how fast they can be transmitted over the web. And typically compressed formats take longer to load because they need to be uncompressed.

So JPG keeps your harddisk space occupation small but jams the model loading thread - which probably hurts you a lot more.

In fact, even PNG is a compromise between speed and storage needs, RGB loads quite a bit faster. Compressed and pre-mipmapped dds is fastest but doesn't work with OpenSource graphics drivers.
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Re: Post your candidate for the SOTM contest of January 2018

Postby disguisedelk » Tue Dec 12, 2017 8:36 pm

Tried my hand at a panoramic view.

A320 into Bergen at Dusk
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Re: Post your candidate for the SOTM contest of January 2018

Postby legoboyvdlp » Wed Dec 13, 2017 4:43 pm

Wow! How did you manage that? It looks great!
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Re: Post your candidate for the SOTM contest of January 2018

Postby disguisedelk » Wed Dec 13, 2017 7:38 pm

Just a couple separate shots stacked together with this editor called Hugin
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Re: Post your candidate for the SOTM contest of January 2018

Postby Anarcho-pilot » Sat Dec 16, 2017 11:22 am

Ready for the takeoff

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Re: Post your candidate for the SOTM contest of January 2018

Postby Johan G » Sat Dec 16, 2017 6:44 pm

legoboyvdlp wrote in Wed Dec 13, 2017 4:43 pm:Wow! How did you manage that? It looks great!

disguisedelk wrote in Wed Dec 13, 2017 7:38 pm:Just a couple separate shots stacked together with this editor called Hugin

See also the FlightGear wiki article Howto:Make full spherical panorama (perm) :wink:
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