DiRT Rally elements blinking constantly
Submitted by leo..@..il.com
Assigned to Intel 3D Bugs Mailing List
In the game DiRT Rally, it's observed that certain elements blink frequently. The most common are the trees, but even the pilot and car can blink on rare cases. This was observed with severity on Mesa Git and Mesa 18.2.3. With Mesa 18.0.5 (from Ubuntu 18.04 repositories) it happens very rarely.
Here is a video I recorded showing this (Mesa git): https://www.youtube.com/watch?v=He3OBNNP6Ro
Another relevant information I observed is how memory usage when using Mesa Git and Mesa 18.2.3 is significantly smaller: they use 22,5% of RAM memory from my computer, while using Mesa 18.0.5 uses 45% of RAM memory.
The game is set to graphic preset Ultralow. The effect was the most noticeable on Greece stages.
I have recorded an Apitrace with Mesa git but it has 5,1 GB compressed and will take hours to upload. When it finishes I'll add its link here. I'll try to bisect to see when the behavior changed in memory usage and blinking elements (I'm not sure if both things are related, but seems suspect).
Processor: Intel Core i3-6100U; Video: Intel HD Graphics 520; Architecture: amd64; RAM memory: 8 GB; Mesa: 19.0.0-devel (git-8c93ef5d); Kernel version: 4.20.0-drm-tip-0811a42b9e8b0fb3aa3ba028ddae292af436b6c2+; Distribution: Xubuntu 18.04.1 amd64.