Rendering 1/4 of Scene with qt5 on macOS 10.12 (Sierra)

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Original report (archived issue) by Denys Kotelovych (Bitbucket: ilidar).

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Having this kind of issue on macOS Sierra. Looks like something wrong going on with ogre.

[Link Text](Link URL)

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Original comment by Denys Kotelovych (Bitbucket: ilidar).

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• Edited issue description

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Original comment by Steve Peters (Bitbucket: Steven Peters, GitHub: scpeters).

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Out of curiosity, how did you build qt for Sierra? Did you use the tapped formula:

brew install cartr/qt4/qt

I don't have a Sierra install, so I don't have a way to reproduce this yet.

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Original comment by Steve Peters (Bitbucket: Steven Peters, GitHub: scpeters).

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• changed component from "rendering::ogre_gazebo" to "os::osx"

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Original comment by Denys Kotelovych (Bitbucket: ilidar).

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Nope, I'm using qt5 formula.

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Original comment by Steve Peters (Bitbucket: Steven Peters, GitHub: scpeters).

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Did you use the qt5 branch of gazebo?

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Original comment by Denys Kotelovych (Bitbucket: ilidar).

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Exactly. I've switched to Sierra recently and now suffering from consequences :-(.

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Original comment by Denys Kotelovych (Bitbucket: ilidar).

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Strange thing is that if I use external display it's working like a charm, perfectly. But when using just a laptop ( MacBook Pro (Retina, 15-inch, Late 2013) ) then above screenshot is happens :-(, I think it's because of Retina display.

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Original comment by Steve Peters (Bitbucket: Steven Peters, GitHub: scpeters).

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I haven't been able to get even that far on Yosemite with the qt5 branch. I was getting runtime errors.

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Original comment by Steve Peters (Bitbucket: Steven Peters, GitHub: scpeters).

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What happens if you adjust the scaling of your display?

https://support.apple.com/en-us/HT202471

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Original comment by Steve Peters (Bitbucket: Steven Peters, GitHub: scpeters).

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• changed title from "Rendering 1/4 of Scene" to "Rendering 1/4 of Scene with qt5 on macOS 10.12 (Sierra)"

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Original comment by Steve Peters (Bitbucket: Steven Peters, GitHub: scpeters).

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Also, are you using the default ogre formula (1.7.4) or have you used one of the more recent alternates (1.8 or 1.9)?

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Original comment by Denys Kotelovych (Bitbucket: ilidar).

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Adjusting scaling didn't help. And I'm using default 1.7.4 formula.

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Original comment by Denys Kotelovych (Bitbucket: ilidar).

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I've tried some of 1.8/1.9, but couldn't compile them, so I've stopped in this direction.

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Original comment by Denys Kotelovych (Bitbucket: ilidar).

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Also, qt5 branch didn't compile on sierra either, seams like qwt doesn't works yet.

UPD
I've disabled qwt and fixed some include_directories problems, so now it's working on my machine.

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Original comment by Steve Peters (Bitbucket: Steven Peters, GitHub: scpeters).

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here's an updated qwt formula:

Homebrew/homebrew-core#5162

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Original comment by Steve Peters (Bitbucket: Steven Peters, GitHub: scpeters).

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I've been able to reproduce the 1/4 screen issue after fixing the recurring seg-fault I was seeing (see pull request #2475). We will continue to investigate this.

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Original comment by Denys Kotelovych (Bitbucket: ilidar).

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Good, would be nice to know what's wrong ;-(.

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Original comment by Ian Chen (Bitbucket: Ian Chen, GitHub: iche033).

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I did some digging into this and found that it's due to qt5's high dpi support, i.e. a problem on retina devices. Everything is scaled by 2x.

Ogre 1.9's OSX Cocoa window class added some support for this, namely the contentScalingFactor param. On the other hand Qt 5.6+ added an attribute, Qt::AA_DisableHighDpiScaling that's supposed to disable scaling. Unfortunately we're on ogre 1.7.4 and qt 5.5 so we don't get these two options.

A not-so-ideal workaround is to scale the ogre window by 2x but we'll probably need to make sure all qt mouse input pos (for mouse picking) are converted correctly to the ogre viewport coordinates within the scaled window.

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Original comment by Ian Chen (Bitbucket: Ian Chen, GitHub: iche033).

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oh just realized it's been a while since I updated homebrew, so we'll have qt 5.7 to work with.

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Original comment by Ian Chen (Bitbucket: Ian Chen, GitHub: iche033).

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pull request #2572

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Original comment by Ian Chen (Bitbucket: Ian Chen, GitHub: iche033).

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• changed state from "new" to "resolved"