FlightGear - Flight Simulator / Tickets / #386 Stereoscopic view modes broken with >= OSG 3.0.0

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Anonymous - 2011-07-27

Originally posted by: cumuluni... (code.google.com)@gmail.com

I can confirm this bug with OSG 3.0.0.
Anaglyphic 3d works fine with OSG 2.8.5

Looks like another OSG oddity, looks like we shouldn't ship with 3.0.0 in 2.4.0!

Status: Accepted

*Originally posted by:* [cumuluni...@gmail.com](http://code.google.com/u/112684473882262169530/) I can confirm this bug with OSG 3.0.0. Anaglyphic 3d works fine with OSG 2.8.5 Looks like another OSG oddity, looks like we shouldn't ship with 3.0.0 in 2.4.0\! **Status:** Accepted

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Anonymous - 2011-07-27

Originally posted by: bre... (code.google.com)@gmail.com

Torsten, does it affect all your machines (Mac/Linux/Windows)?

I'll ask on osg-devel if anyone has successfully tested the feature recently. And they're working on a 3.0.1 (patch) release - if we're lucky...

*Originally posted by:* [bre...@gmail.com](http://code.google.com/u/112567806978334989774/) Torsten, does it affect all your machines \(Mac/Linux/Windows\)? I'll ask on osg-devel if anyone has successfully tested the feature recently. And they're working on a 3.0.1 \(patch\) release - if we're lucky...

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Anonymous - 2011-07-27

Originally posted by: bre... (code.google.com)@gmail.com

(No comment was entered for this change.)

Summary: Stereoscopic view modes broken with >= OSG 3.0.0

*Originally posted by:* [bre...@gmail.com](http://code.google.com/u/112567806978334989774/) *\(No comment was entered for this change.\)* **Summary:** Stereoscopic view modes broken with >= OSG 3.0.0

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Anonymous - 2011-07-27

Originally posted by: bre... (code.google.com)@gmail.com

CCing: Mathias/Lauri as OSG and shader experts... The fluffy 3D clouds turn into colored blobs with OSG 3.0.0 when "OSG stereo" is enabled. Also cockpit surfaces are almost all black. Could the problem be related to all surfaces being rendered by shaders? Any other ideas why some areas could be affected while others are not?

Cc: Mathias....@googlemail.com lauri.pe...@gmail.com

*Originally posted by:* [bre...@gmail.com](http://code.google.com/u/112567806978334989774/) CCing: Mathias/Lauri as OSG and shader experts... The fluffy 3D clouds turn into colored blobs with OSG 3.0.0 when "OSG stereo" is enabled. Also cockpit surfaces are almost all black. Could the problem be related to all surfaces being rendered by shaders? Any other ideas why some areas could be affected while others are not? **Cc:** Mathias....@googlemail.com lauri.pe...@gmail.com

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Anonymous - 2011-07-27

Originally posted by: cumuluni... (code.google.com)@gmail.com

Same is on Windows with osg 3.0.0 with release/2.4.0 and next
This is really a serious bug, we can't ship 2.4.0 with that one!

Labels: -Priority-High Priority-Immediate

*Originally posted by:* [cumuluni...@gmail.com](http://code.google.com/u/112684473882262169530/) Same is on Windows with osg 3.0.0 with release/2.4.0 and next This is really a serious bug, we can't ship 2.4.0 with that one\! **Labels:** -Priority-High Priority-Immediate

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Anonymous - 2011-07-27

Originally posted by: bre... (code.google.com)@gmail.com

And this is not a shader issue. It also happens with shaders disabled. I've posted this at osg-devel and there were some helpful comments. See here:
http://www.mail-archive.com/osg-users@lists.openscenegraph.org/msg51855.html

@Mathias: Robert Osfield remembered some email discussion with you about OSG 3.0 changes, which broke some custom culling optimization/trick/hack for FG. Could that be related here? Flying over the mountains, I can see the problem also affect the shape of scenery elements - so it indeed seems culling related.

And, as suggested by RobertO, it's probably a good idea to start a binary search, to identify which OSG change triggered the issue for us. OSG 2.9.13 seems already affected. We've been using OSG 2.9.9 for quite a while (FG2.2.0) - so I think that was still ok.

Cc: -lauri.pe...@gmail.com

*Originally posted by:* [bre...@gmail.com](http://code.google.com/u/112567806978334989774/) And this is not a shader issue. It also happens with shaders disabled. I've posted this at osg-devel and there were some helpful comments. See here: [http://www.mail-archive.com/osg-users@lists.openscenegraph.org/msg51855.html](http://www.mail-archive.com/osg-users@lists.openscenegraph.org/msg51855.html) @Mathias: Robert Osfield remembered some email discussion with you about OSG 3.0 changes, which broke some custom culling optimization/trick/hack for FG. Could that be related here? Flying over the mountains, I can see the problem also affect the shape of scenery elements - so it indeed seems culling related. And, as suggested by RobertO, it's probably a good idea to start a binary search, to identify which OSG change triggered the issue for us. OSG 2.9.13 seems already affected. We've been using OSG 2.9.9 for quite a while \(FG2.2.0\) - so I think that was still ok. **Cc:** -lauri.pe...@gmail.com

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Anonymous - 2011-07-27

Originally posted by: bre... (code.google.com)@gmail.com

(No comment was entered for this change.)

Blocking: 362

*Originally posted by:* [bre...@gmail.com](http://code.google.com/u/112567806978334989774/) *\(No comment was entered for this change.\)* **Blocking:** 362

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Anonymous - 2011-07-27

Originally posted by: lauri.pe... (code.google.com)@gmail.com

Reading the osg-users discussion, I assume one might want to check the simgear::EffectCullVisitor in simgear/scene/EffectCullvisitor.* if it has some customizations which are now broken. Maybe even disable it in src/Main/CameraGroup.cxx installCullvisitor function? Iirc disabling this makes all textures and other effects not work, but if the stereo mode then works correctly, it seems the custom cullvisitor is the culprit.

Looking at the screenshots, it looks exactly like any surfaces having complex effects is not displayed correctly, but the geometry exists. I assume it is something in that cullvisitor.

*Originally posted by:* [lauri.pe...@gmail.com](http://code.google.com/u/114969395536595994472/) Reading the osg-users discussion, I assume one might want to check the simgear::EffectCullVisitor in simgear/scene/EffectCullvisitor.\* if it has some customizations which are now broken. Maybe even disable it in src/Main/CameraGroup.cxx installCullvisitor function? Iirc disabling this makes all textures and other effects not work, but if the stereo mode then works correctly, it seems the custom cullvisitor is the culprit. Looking at the screenshots, it looks exactly like any surfaces having complex effects is not displayed correctly, but the geometry exists. I assume it is something in that cullvisitor.

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Anonymous - 2011-07-28

Originally posted by: cumuluni... (code.google.com)@gmail.com

On our presentation machine, the last working version (incl. stereo) of OSG is 2.9.5. From 2.9.6 and upwards, I get a pale blue screen and just the gui gets drawn. FG is working perfectly fine, but not a single piece of scenery is visible.
Using latest nvidia driver and just a single window for fg.
Please check if the stereo-bug comes in with 2.9.6...

*Originally posted by:* [cumuluni...@gmail.com](http://code.google.com/u/112684473882262169530/) On our presentation machine, the last working version \(incl. stereo\) of OSG is 2.9.5. From 2.9.6 and upwards, I get a pale blue screen and just the gui gets drawn. FG is working perfectly fine, but not a single piece of scenery is visible. Using latest nvidia driver and just a single window for fg. Please check if the stereo-bug comes in with 2.9.6...

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Anonymous - 2011-07-28

Originally posted by: Mathias....@googlemail.com

Ok,

Does [rb3ad524cec5c0ff26aad91117558beef9d39edcd] committed a few minutes ago on next fix this problem?
Also can anybody with a still alive osg 2.8 build double check that next still compiles/works?

Mathias

*Originally posted by:* [Mathias....@googlemail.com](http://code.google.com/u/110229530748224616880/) Ok, Does [rb3ad524cec5c0ff26aad91117558beef9d39edcd] committed a few minutes ago on next fix this problem? Also can anybody with a still alive osg 2.8 build double check that next still compiles/works? Mathias

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Anonymous - 2011-07-28

Originally posted by: Mathias....@googlemail.com

And, yes - I also observed a completely blue screen when switching to osg 3.0 for the first time.
But the completely blue screen with osg-3.0 went away here when I did a complete rebuild from scratch of osg, simgear and flightgear.

Mathias

*Originally posted by:* [Mathias....@googlemail.com](http://code.google.com/u/110229530748224616880/) And, yes - I also observed a completely blue screen when switching to osg 3.0 for the first time. But the completely blue screen with osg-3.0 went away here when I did a complete rebuild from scratch of osg, simgear and flightgear. Mathias

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Anonymous - 2011-07-28

Originally posted by: cumuluni... (code.google.com)@gmail.com

FlightGear next compiles and runs fine with your patch and OSG 2.8.5
Building with OSG 3.0.0 as I type...

Interesting your blue screen went away... I tried several OSG versions today and did a make clean && make && make install for SimGear and FlightGear with each version change of OSG.
2.9.5 worked fine, 2.9.6 did not, going back to 2.9.5 worked fine again. Will check later, if that's gone with your patch, too.

Status: Testing

*Originally posted by:* [cumuluni...@gmail.com](http://code.google.com/u/112684473882262169530/) FlightGear next compiles and runs fine with your patch and OSG 2.8.5 Building with OSG 3.0.0 as I type... Interesting your blue screen went away... I tried several OSG versions today and did a make clean && make && make install for SimGear and FlightGear with each version change of OSG. 2.9.5 worked fine, 2.9.6 did not, going back to 2.9.5 worked fine again. Will check later, if that's gone with your patch, too. **Status:** Testing

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Anonymous - 2011-07-28

Originally posted by: cumuluni... (code.google.com)@gmail.com

Mathias, you are my hero!
1. stereo mode now works with osg 3.0.0 and your patch compiles with 2.8.5
2. the blue screen goes away (as you said) after starting from scratch. make clean is not enough, but
rm -rf * && cmake /path/to/simgear-or-flightgear && make install
did the trick.

Issue solved for next - should we pick into 2.4.0? I'd say yes!

*Originally posted by:* [cumuluni...@gmail.com](http://code.google.com/u/112684473882262169530/) Mathias, you are my hero\! 1\. stereo mode now works with osg 3.0.0 and your patch compiles with 2.8.5 2\. the blue screen goes away \(as you said\) after starting from scratch. make clean is  not enough, but rm -rf \* && cmake /path/to/simgear-or-flightgear && make install did the trick. Issue solved for next - should we pick into 2.4.0? I'd say yes\!

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Anonymous - 2011-07-28

Originally posted by: cumuluni... (code.google.com)@gmail.com

Attached a screenshot to proof that it's working now.

*Originally posted by:* [cumuluni...@gmail.com](http://code.google.com/u/112684473882262169530/) Attached a screenshot to proof that it's working now.

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Anonymous - 2011-07-28

Originally posted by: Mathias....@googlemail.com

Cherry picked and pushed into 2.4.0.

And sorry for the bad branch I have at gitorious for some minutes. The push refspec was just incomplete when I hit the return button.
It took me some time to find out how to get rid of that bad branch on gitorious again :-/

I have changed the state to verified based on the last screenshot.

Status: Verified

*Originally posted by:* [Mathias....@googlemail.com](http://code.google.com/u/110229530748224616880/) Cherry picked and pushed into 2.4.0. And sorry for the bad branch I have at gitorious for some minutes. The push refspec was just incomplete when I hit the return button. It took me some time to find out how to get rid of that bad branch on gitorious again :-/ I have changed the state to verified based on the last screenshot. **Status:** Verified

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Anonymous - 2011-07-29

Originally posted by: cumuluni... (code.google.com)@gmail.com

Also verified on Windows/release/2.4.0 -> works.

*Originally posted by:* [cumuluni...@gmail.com](http://code.google.com/u/112684473882262169530/) Also verified on Windows/release/2.4.0 -> works.

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Anonymous - 2011-07-29

Originally posted by: bre... (code.google.com)@gmail.com

Yay, it also works over here. Thanks Mathias! *applause*

*Originally posted by:* [bre...@gmail.com](http://code.google.com/u/112567806978334989774/) Yay, it also works over here. Thanks Mathias\! \*applause\*

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Stereoscopic view modes broken with >= OSG 3.0.0

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#386 Stereoscopic view modes broken with >= OSG 3.0.0

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