Camera angle messed up

[niansa]

Minetest version

Minetest 5.8.0
Using Irrlicht 1.9.0mt13
Using LuaJIT 2.1.0-beta3
BUILD_TYPE=Release
RUN_IN_PLACE=1
USE_CURL=1
USE_GETTEXT=1
USE_SOUND=1
STATIC_SHAREDIR="."
STATIC_LOCALEDIR="locale"

Irrlicht device

X11

Operating system and version

Debian Bookworm

CPU model

Cortex-A76

GPU model

VideoCore VII

Active renderer

OpenGL 3.1.0

Summary

I can't really describe it, but the camera just doesn't rotate the way it should, it's super weird.
Video: https://github.com/minetest/minetest/assets/20720267/80dac1ee-9bc1-4196-86ec-cd116212ab54

Steps to reproduce

1. Download a fresh build from minetest.net
2. Start the minetest bin
3. Download minetest game
4. Create a new world
5. Teleport to 0 0 0
6. Try to look around

[niansa]

Third person view is even worse:

VID_20240620_141425_369.mp4

[SmallJoker]

Does it work correctly if you use software rendering? e.g. with LIBGL_ALWAYS_SOFTWARE=1 minetest (CPU usage must increase noticeably).

It appears that the camera up vector is manipulated, rather than its target. I'd assume that moving forward and backward would result in similar issues - is that correct?

[niansa]

Software rendering doeen't make a difference here.

It's really hard to tell what direction the camera moves, really because as soon as I start walking the whole camera starts wanking around like crazy.

Also, I've noticed the items in the inventory are upside-down:

Additionally, the sound effects all sound really distorted.

[niansa]

Here's a picture of the same system running Portal just fine:

[Desour]

Looks like some numbers are swapped for some reason.

What is the output if you run minetest --run-unittests?

[sfan5]

Please try Minetest 5.9.0-dev and also the ogles2 or opengl3 video drivers, which are more modern and the former more appropriate for your hardware.

[niansa]

What is the output if you run minetest --run-unittests?

message.txt

At the end, it just seems to hang until I interrupt it.

[niansa]

Please try Minetest 5.9.0-dev and also the ogles2 or opengl3 video drivers, which are more modern and the former more appropriate for your hardware.

Weirdly enough I am not able to replicate this issue at all when compiling Minetest myself, even when compiling 5.8.0.

The different graphics drivers don't seem to make a difference either.

Edit: I've tried all kind of different compiler configurations, none seems to be able to replicate this issue.

[sfan5]

Let's put this down to your distributions having a messed up build of Minetest.

[niansa]

Let's put this down to your distributions having a messed up build of Minetest.

Thing is, this is an official build from minetest.net... not from Debian itself. And the same build works on another machine

[sfan5]

The only official build minetest.net has is for win32.

[niansa]

The only official build minetest.net has is for win32.

Is the PPA not official?

[sfan5]

Well I forgot about that. But PPAs are only for Ubuntu and I don't think we even have an aarch64 package in it.

[niansa]

I think I know what might be going on: I admit I manually downloaded and installed the .deb from the PPA. But I do not think that's the problem here. I didn't make sure to actually install an aarch64 package, and I had previously tinkered with the system to get Steam to install which iIrc involved installing an amd64 emulation layer. That's probably why apt installed the package without a complaint and why I didn't notice it was the wrong architecture.
I suspect that emulation layer has some kind of bug leading to that behavior.

I would say user error? It would certainly explain it. Sorry for bothering you then.

[sfan5]

Yeah I'd consider that user error.