OpenGL upside down?

[preslmayer]

Hello!

I have a problem with opengl on a Linux host (Version 6.0.6) with Windows 10 guest installed.
I have configured the windows 10 guest to use the VboxSVGA controller and Guest Additions are installed.
If i test opengl with "GPU Caps Viewer" the Logos in the 3D Demos are displayed upside down.
I have this problem in other applications too!
What i am doing wrong?

Opengl upside down

opengl_upside_down.jpg (61.96 KiB) Viewed 10132 times

[socratis]

I have this problem in other applications too!

Like???

We need to see a complete VBox.log, from a complete VM run, where the problem occurs:

• Start the VM from cold-boot (not from a paused or saved state) / Observe problem / Shutdown the VM (force close it if you have to).
• With the VM completely shut down (not paused or saved), right-click on the VM in the VirtualBox Manager and select "Show Log".
• Save only the first "VBox.log", ZIP it and attach it to your response. See the "Upload attachment" tab below the reply form.

[mpack]

I'm going to guess that this has nothing to do with VirtualBox, and that the problem is that the software (or the model, depending on your POV) is using the wrong convention for X-Y-Z axes.

The US convention for computer graphics (especially from a gaming background) is to have X across the screen, Y up the screen, and Z as depth into the screen. This is a left handed coordinate system.

In many other places, particularly in software from a mathematical or engineering background, the convention is to have X and Y as the horizontal plane, Z as height above the plane. This is a right handed coordinate system. In a normally 3D viewing position that means X is across the screen, Y is depth into the screen, Z is up the screen.

I.e. If you load a model using the wrong convention then Y and Z are swapped, or more accurately, Y'=(-Z), Z'=Y.

Decent viewing software should have an option to adapt to the model's convention.

[preslmayer]

I have this problem in other applications too!

Like???

Archicad 21; OpenGL Extension Viewer

You can find my log in the attachment

[preslmayer]

I have tried the same setup on VMware Workstation 15 Pro (15.0.4) for Linux.
There is no problem with OpenGL.
This shows me that this is NO problem with the software i use!

[mpack]

Well, I'd be more convinced if others were reporting the same problem... this is a very specific symptom.

[preslmayer]

I have forgotten ... that i had to add the option

Code: Select all   Expand viewCollapse view

mks.gl.allowBlacklistedDrivers = "TRUE"

in VMware

[htrex]

Screenshot from 2019-12-30 13-16-43.jpg (120.45 KiB) Viewed 9551 times

I'm seeing the same problem, Photoshop shows images upside down.
Vbox.log is attached, please fix it!

[fourseasons]

Same problem here. See srceenshot.
Using Virtualbox 6.1 on Catalina (latest update) host and WIndows 1909 guest.

(Please tell me how to generate helpful logs!)

I have a sreenshot, but the size is app. 212KByte. I can't upload it.

[fourseasons]

Reduced (in size and quality) picture is attached.
Area in the "circle" is upside down.

[fourseasons]

The log file!

[scottgus1]

(Please tell me how to generate helpful logs!)

Though I have no idea how to fix this upside-down display trouble, I can help with posting a log:

Please zip and post a guest vbox.log, from the guest's Logs folder, using the forum's Upload Attachment tab.

[fourseasons]

The log file again.

[mpack]

There won't be anything in the log. A question I'd want answered is why the text outside the highlighted section is not also upside down, and perhaps look to the host drivers for answers, or the guest app whatever it is.

[Martin]

Did you also test with 3d support disabled for the VM?
This would show if the problem is in the "translation" of OpenGL by the host video driver or inside the guest.