Disable display compositor or switch to xrender about chromium_os-raspberry_pi

[thiago-monteiro]

Thank you for mentioning this. I have the same issue. It's bearable but very annoying.

[yunshansimon]

The recent version of Chromium OS based on "freon" which is a graphic stack combined of DRI/GBM/OpenGL ES(or VULKAN).
We use the latest raspberry pi official kernel. If the graphic driver in the kernel doesn't provide stable and efficient performance, we can do nothing about it.

[Discombobulated88]

Hello , I'm not talking about the graphics driver in general I'm talking about opengl based compositors specifically. For example the raspberry pi 4 has the same problem in Linux when using the "Compton" opengl compositor or any opengl compositor. I'm asking you if it is possible to disable the opengl compositor or switch the backend to xrender instaid of opengl in chrome os.

I believe you need to change the window manager backend to xrender looking at some of the code it looks like it's possible.

Take a look here please:

backend_defines =
{'opengl': ['COMPOSITOR_OPENGL'],
  | 'opengles': ['COMPOSITOR_OPENGLES'],
  | 'xrender': ['COMPOSITOR_XRENDER']}

https://chromium.googlesource.com/chromiumos/platform/window_manager/%2B/a2bc12e3761d2c1d41b69c2a334af60262e7bd4c/SConstruct&ved=2ahUKEwiPodujha3mAhWoV98KHUmIDT4QFjAAegQICRAC&usg=AOvVaw1luto2zDszLLD5riCUWVFU&cshid=1576049307054

[yunshansimon]

@Discombobulated88 Chromium os neet hardware acceleration, there are no other options. I'm sad as you were. When I got the brand new rpi4, I thought it will get the same performance as rk3288, even better. But at last, It's worse than rpi3. We need more patience to wait for the new driver.

[Discombobulated88]

It can still have hardware acceleration but the window manager compositor needs to be changed to xrender instead if opengl

[fydeos-alpha]

Deviation of the roadmap of vanilla Chromium OS is not the intention of this project, especially on the graphics stack which is a huge undertaking. Sorry friend, if you want to re-marry Chromium OS with X you are probably on your own.

Closing the issue.