Black screen after start

[anyc]

I just compiled the latest commit on my Gentoo box and I only see a black screen after I start the game. I see the mouse cursor and I can hear the click sounds but the display stays black. To build I used this ebuild: dustrac-2.0.0.ebuild

My machine is a Thinkpad T530 laptop with a Nvidia NVS 5400M (using nouveau drivers) and an attached FullHD monitor.

[Fri Dec 29 20:07:29 2017] I: Dust Racing 2D version 2.0.0
[Fri Dec 29 20:07:29 2017] I: Compiled against Qt version 5.9.3
[Fri Dec 29 20:07:29 2017] I: Creating game object..
[Fri Dec 29 20:07:29 2017] W: Failed to load translations for en_US
[Fri Dec 29 20:07:29 2017] I: Resolution: 1920 1200 1
[Fri Dec 29 20:07:29 2017] I: Creating the renderer..
[Fri Dec 29 20:07:29 2017] I: OpenGL Version: 3.0 Mesa 17.2.7
[Fri Dec 29 20:07:29 2017] I: Loading font /usr/share/dustrac/fonts/DejaVuSans-Bold.ttf..
[Fri Dec 29 20:07:29 2017] I: Loaded font DejaVu Sans
[Fri Dec 29 20:07:29 2017] I: Font slot size: 71x80
[Fri Dec 29 20:07:29 2017] I: Font texture size (initial): 568x1200
[Fri Dec 29 20:07:30 2017] I: Loading surface config from '/usr/share/dustrac/surfaces.conf'..
[Fri Dec 29 20:07:30 2017] I: Sound device: OpenAL Soft
[Fri Dec 29 20:07:30 2017] I: Loading mesh config from '/usr/share/dustrac/meshes.conf'..
[Fri Dec 29 20:07:30 2017] I: Loading race tracks from '/usr/share/dustrac/levels'..
[Fri Dec 29 20:07:30 2017] I:   Found '/usr/share/dustrac/levels/curvastone.trk', index=8
[Fri Dec 29 20:07:30 2017] I:   Found '/usr/share/dustrac/levels/Desert Storm.trk', index=13
[Fri Dec 29 20:07:30 2017] I:   Found '/usr/share/dustrac/levels/Diamond.trk', index=14
[Fri Dec 29 20:07:30 2017] I:   Found '/usr/share/dustrac/levels/Far Lands.trk', index=15
[Fri Dec 29 20:07:30 2017] I:   Found '/usr/share/dustrac/levels/Figure 8.trk', index=12
[Fri Dec 29 20:07:30 2017] I:   Found '/usr/share/dustrac/levels/infinity.trk', index=0
[Fri Dec 29 20:07:30 2017] I:   Found '/usr/share/dustrac/levels/monza.trk', index=3
[Fri Dec 29 20:07:30 2017] I:   Found '/usr/share/dustrac/levels/Radiator.trk', index=17
[Fri Dec 29 20:07:30 2017] I:   Found '/usr/share/dustrac/levels/ring.trk', index=9
[Fri Dec 29 20:07:30 2017] I:   Found '/usr/share/dustrac/levels/straight.trk', index=7
[Fri Dec 29 20:07:30 2017] I:   Found '/usr/share/dustrac/levels/suzuka.trk', index=11
[Fri Dec 29 20:07:30 2017] I:   Found '/usr/share/dustrac/levels/triangle.trk', index=5
[Fri Dec 29 20:07:30 2017] I:   Found '/usr/share/dustrac/levels/Twineburg.trk', index=18
[Fri Dec 29 20:07:30 2017] I:   Found '/usr/share/dustrac/levels/twister.trk', index=10
[Fri Dec 29 20:07:30 2017] I:   Found '/usr/share/dustrac/levels/Western Valley.trk', index=16
[Fri Dec 29 20:07:30 2017] I: Loading race tracks from '/home/steam/DustRacingTracks'..
[Fri Dec 29 20:07:30 2017] I:   No race tracks found.
[Fri Dec 29 20:07:30 2017] I: A total of 15 race track(s) loaded.

[juzzlin]

Thanks for reporting!

Could you test if you can build and run any of the previous versions with the same setup, 1.13.0 for example?

[juzzlin]

Also in your ebuild file the UbuntuMono stuff shouldn't be needed anymore as the game uses now a DejaVu font. The homepage URL should be http://juzzlin.github.io/DustRacing2D :)

[juzzlin]

One more thing: could you test with Nvidia's official drivers?

[juzzlin]

I just verified that the game works with Qt 5.9.3 on NVIDIA's drivers so the problem might be Nouveau:

[Fri Dec 29 22:45:32 2017] I: Dust Racing 2D version 2.0.0
[Fri Dec 29 22:45:32 2017] I: Compiled against Qt version 5.9.3
[Fri Dec 29 22:45:32 2017] I: Creating game object..
[Fri Dec 29 22:45:32 2017] W: Failed to load translations for en_US
[Fri Dec 29 22:45:32 2017] I: Resolution: 1280 720 1
[Fri Dec 29 22:45:32 2017] I: Creating the renderer..
[Fri Dec 29 22:45:32 2017] I: OpenGL Version: 4.5.0 NVIDIA 384.90
[Fri Dec 29 22:45:33 2017] I: Loading font ./data/fonts/DejaVuSans-Bold.ttf..
[Fri Dec 29 22:45:33 2017] I: Loaded font DejaVu Sans
[Fri Dec 29 22:45:33 2017] I: Font slot size: 71x78
[Fri Dec 29 22:45:33 2017] I: Font texture size (initial): 568x1170
[Fri Dec 29 22:45:33 2017] I: Loading surface config from './data/surfaces.conf'..
[Fri Dec 29 22:45:33 2017] I: Sound device: OpenAL Soft

I built it in Qt Creator using the default CMake configuration.

[anyc]

I just tried with 1.11.0 that is included in the main Gentoo repository and there I see the main screen and the following output on the terminal:

[Sat Dec 30 12:43:41 2017] I: Dust Racing 2D version 1.11.0
[Sat Dec 30 12:43:41 2017] I: Compiled against Qt version 5.9.3
[Sat Dec 30 12:43:41 2017] I: Failed to load translations for en_US
[Sat Dec 30 12:43:41 2017] I: Creating game object..
[Sat Dec 30 12:43:41 2017] I: Resolution: 1920 1200 1
[Sat Dec 30 12:43:41 2017] I: Creating the renderer..
[Sat Dec 30 12:43:42 2017] I: OpenGL Version: 3.0 Mesa 17.2.7
[Sat Dec 30 12:43:42 2017] I: Loading font /usr/share/dustrac/fonts/UbuntuMono-R.ttf..
[Sat Dec 30 12:43:42 2017] I: Loading font /usr/share/dustrac/fonts/UbuntuMono-B.ttf..
[Sat Dec 30 12:43:42 2017] I: Font texture size: 240x960
[Sat Dec 30 12:43:42 2017] I: Loading surface config from '/usr/share/dustrac/surfaces.conf'..
[Sat Dec 30 12:43:42 2017] I: Sound device: OpenAL Soft
[Sat Dec 30 12:43:42 2017] I: Loading mesh config from '/usr/share/dustrac/meshes.conf'..
[Sat Dec 30 12:43:42 2017] I: Loading race tracks from '/usr/share/dustrac/levels'..
[Sat Dec 30 12:43:42 2017] I:   Found '/usr/share/dustrac/levels/curvastone.trk', index=8
[Sat Dec 30 12:43:42 2017] I:   Found '/usr/share/dustrac/levels/infinity.trk', index=0
[Sat Dec 30 12:43:42 2017] I:   Found '/usr/share/dustrac/levels/monza.trk', index=3
[Sat Dec 30 12:43:42 2017] I:   Found '/usr/share/dustrac/levels/ring.trk', index=9
[Sat Dec 30 12:43:42 2017] I:   Found '/usr/share/dustrac/levels/straight.trk', index=7
[Sat Dec 30 12:43:42 2017] I:   Found '/usr/share/dustrac/levels/suzuka.trk', index=11
[Sat Dec 30 12:43:42 2017] I:   Found '/usr/share/dustrac/levels/triangle.trk', index=5
[Sat Dec 30 12:43:42 2017] I:   Found '/usr/share/dustrac/levels/twister.trk', index=10
[Sat Dec 30 12:43:42 2017] I: Loading race tracks from '/home/steam/DustRacingTracks'..
[Sat Dec 30 12:43:42 2017] I:   No race tracks found.
[Sat Dec 30 12:43:42 2017] I: A total of 8 race track(s) loaded.
[Sat Dec 30 12:43:48 2017] I: Quit selected from the main menu.

I can try it with the official drivers but it will take a while as I currently try to avoid to reboot the machine. (I'm testing this game while I wait on some other calculations)

[juzzlin]

Ok. If it doesn't work with official drivers either it would be easy to find the bad commit with git bisect. But of course this can be done already with Nouveau to get a hint about what's going on.

[juzzlin]

I now tested with Nouveau myself:

[Sat Dec 30 14:29:42 2017] I: Dust Racing 2D version 2.0.0
[Sat Dec 30 14:29:42 2017] I: Compiled against Qt version 5.9.3
[Sat Dec 30 14:29:42 2017] I: Creating game object..
[Sat Dec 30 14:29:42 2017] W: Failed to load translations for en_US
[Sat Dec 30 14:29:42 2017] I: Resolution: 1280 720 1
[Sat Dec 30 14:29:42 2017] I: Creating the renderer..
[Sat Dec 30 14:29:42 2017] I: OpenGL Version: 3.0 Mesa 17.0.7
[Sat Dec 30 14:29:42 2017] I: Loading font ./data/fonts/DejaVuSans-Bold.ttf..
[Sat Dec 30 14:29:42 2017] I: Loaded font DejaVu Sans
[Sat Dec 30 14:29:42 2017] I: Font slot size: 71x78
[Sat Dec 30 14:29:42 2017] I: Font texture size (initial): 568x1170
[Sat Dec 30 14:29:42 2017] I: Loading surface config from './data/surfaces.conf'..
[Sat Dec 30 14:29:42 2017] I: Sound device: OpenAL Soft

The results are that the game actually worked, but was very slow. I also cannot set a bigger resolution than 1280x720 on my machine so Nouveau is pretty much useless on my hardware.

[anyc]

Result of the bisect:

b13016cc97f8b9f18149dc0e6c71ed37937a4d98 is the first bad commit
commit b13016cc97f8b9f18149dc0e6c71ed37937a4d98
Author: Jussi Lind <jussi.lind@iki.fi>
Date:   Thu Sep 7 22:23:14 2017 +0300

    Decrease view angle to 22.5 degrees

:040000 040000 1fc50503eae7c3ddbd7abb14b2ab4c789ec31188 15b2c9ce58db49872c449c6398f58952ab145529 M      src

[juzzlin]

Hmm...interesting. Did this happen with the official drivers?

[anyc]

No, still with nouveau. I just manually set those variables to the old values and 2.0.1 works.

[juzzlin]

Ok. Could you try to keep the values as is but increase m_zFar so that it works. I suspect that for some reason 1500.0 is not enough and everything gets clipped off. I'd like to know how much is enough in this case if that's the problem. I could then change the code a bit.

[anyc]

1600 does not work, 1700 works. Do you need a more precise value?

[juzzlin]

No, this is enough. Thanks! I will make fix in a moment.

[juzzlin]

Please test with 7e24080 to see if it solves the issue. I still suspect this is a bug in Nouveau, but it doesn't harm anything to fix the issue like this. I calculated that the original value should have been enough so it's a bit weird issue :)