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Default C172P, instruments blank as pan

Graphics issues like: bad framerates, weird colors, OpenGL errors etc. Bad graphics ar usually the result of bad graphics cards or drivers.
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Default C172P, instruments blank as pan

Postby mgc » Wed Jun 29, 2016 3:44 am

Windows 10
FlightGear version 2016.1.1
Intel HD graphics 520 card (already tried updating drivers; issue continued to occur)

Here's a video of the issue (only happens while panning, not while zooming): https://youtu.be/_ePpJMyKv_o

Any thoughts on why this behavior is occurring?

Thanks,
mgc
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Re: Default C172P, instruments blank as pan

Postby jaxsin » Wed Jun 29, 2016 9:48 am

Well that is most certainly a graphic display issue. Have you ever had FG installed on this hardware and not seen this issue? Is it a recent development bug or has it always just been that way?
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Re: Default C172P, instruments blank as pan

Postby legoboyvdlp » Wed Jun 29, 2016 7:00 pm

You have ALS on, correct? I have that bug as well. I reported it on github, and it's basically just a too weak graphics card.
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Re: Default C172P, instruments blank as pan

Postby Thorsten » Fri Jul 01, 2016 2:53 pm

It's probably one of these 'out of GPU memory' issues where the card can't hold the whole scene at once and then selects. The intels used to render half-ripped open planes when they were memory-heavy. They're really not powerful enough to run the rendering demands of a flightsim and no substitute for a real graphics card.
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Re: Default C172P, instruments blank as pan

Postby Hooray » Fri Jul 01, 2016 9:04 pm

It could also be a graphics driver issue related to the legacy OpenGL code interacting with the fgviewer/osgviewer main loop - to see if it's related to being out of out-of-ram, you could try to load the same cockpit using fgviewer standalone, try any combination of draw-masks (prior to starting, see the wiki for details) and then report back here to troubleshoot this step by step.

If you are into tinkering (as in Nasal coding), there also is a snippet of Nasal code that could be extended to load instruments/cockpit panels using native OSG code via the Canvas subsystem: http://wiki.flightgear.org/Howto:Parsin ... the_Canvas

It may not look that well, and won't be functional (hot spots / bindings) in its current form, but should be able to load most of the same textures without too much effort, so should put pretty much the same load on the GPU - without going through the legacy 2D panels code:

http://wiki.flightgear.org/Unifying_the ... via_canvas
Image

Obviously, you can safely ignore all of this if the bug disappears when disabling effects/shaders
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Thanks & all the best,
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