| 2014-12-17 14:04:51 |
Stephen M. Webb |
description |
Ubuntu release: 14.04
Installed compiz version: 1:0.9.11+14.04.20140409-0ubuntu1
The option 'unredirect fullscreen windows', which is enabled by default in Compiz, causes tearing in games and other fullscreen OpenGL applications, even with 'sync to vblank' options enabled in ccsm, in the GPU settings and in the game.
With this option disabled, VSync works as fine as should with 'unredirected fullscreen windows' enabled and there is no tearing (but this causes performance issues and the Unity panel shadow on top of the application).
Tested with:
- ASUS NVIDIA GTX 650-E-1GD5 with NVIDIA proprietary driver 331.38 (tested) (nvidia-331)
- the same graphics card with NVIDIA proprietary driver 331.38 (nvidia-331-updates)
- the same graphics card with Nouveau open source driver (xserver-xorg-video-nouveau)
- Intel HD 4000 iGPU with default open source drivers |
Ubuntu release: 14.04
Installed compiz version: 1:0.9.11+14.04.20140409-0ubuntu1
The option 'unredirect fullscreen windows', which is enabled by default in Compiz, causes tearing in games and other fullscreen OpenGL applications, even with 'sync to vblank' options enabled in ccsm, in the GPU settings and in the game.
With this option disabled, VSync works as fine as should with 'unredirected fullscreen windows' enabled and there is no tearing (but this causes performance issues and the Unity panel shadow on top of the application).
Tested with:
- ASUS NVIDIA GTX 650-E-1GD5 with NVIDIA proprietary driver 331.38 (tested) (nvidia-331)
- the same graphics card with NVIDIA proprietary driver 331.38 (nvidia-331-updates)
- the same graphics card with Nouveau open source driver (xserver-xorg-video-nouveau)
- Intel HD 4000 iGPU with default open source drivers
*** NOTE TO PEOPLE REPORTING "SIMILAR" BUGS ***
This bug is about unredirected fullscreen windows. If you see menu bars, the Unity Panel, Indicators, a menu bar, a window title, or any other decorations you are not running in unredirected fullscreen mode and you are not experiencing this bug.
A fullscreen window has content that occupies the entire screen, no borders, no menu bars, no Unity elements. An unredirected window is a situation in which the application renders directly to the screen, without going through a compositor (such as Compiz).
If you are seeing anything at all except your application content on the screen, this bug does not apply to you. |
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