[Nouveau] [Bug 64323] Severe misrendering in Left 4 Dead 2

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=64323

--- Comment #25 from Emil Velikov <emil.l.velikov at gmail.com> ---
Created attachment 90056
  --> https://bugs.freedesktop.org/attachment.cgi?id=90056&action=edit
yet another try (author imirkin)

Here are some numbers while running dota2. Game is up-to date as of time of
this post.

* recorded a timedemo using "record timedemo1"
* executed via "steam -applaunch 570 +con_logfile timedemo1.log +cl_showfps 2
+timedemoquit timedemo1"

mesa master (fb5f5b81883f360dcbbf407a0f6f5606bc0c0495)

* master
903 frames 45.906 seconds 19.67 fps (50.84 ms/f) 2.519 fps variability
Only in-game corruption, flickering textures. HUD is rendered fine

* master + attached patch
903 frames 56.210 seconds 16.06 fps (62.25 ms/f) 0.696 fps variability
No visible corruption or flicker at all.

* master + 81517 patch
903 frames 70.074 seconds 12.89 fps (77.60 ms/f) 0.974 fps variability
Only in-game corruption, flickering textures. Mostly plain colour or rainbow
texture. HUD _is affected by the flicker_
Note: it used to work previously...

The rainbow texture is part of some courier special effects. Those effect were
not used in this match. Some memory corruption maybe ?

* master + revert commit 48a45ec24ae74c00d1487552e94d9f824a428f58
903 frames 68.625 seconds 13.16 fps (76.00 ms/f) 0.319 fps variability
No visible corruption or flicker at all.

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