On 2021-06-16 1:24 pm, Alexander Kanavin wrote:

On Wed, 16 Jun 2021 at 16:58, simon <simon@...> wrote:

- There's a warning about not finding the IRIS driver:
MESA_LOADER: failed to open iris: /usr/lib/dri/iris_dri.so: cannot open
shared object file: No such file or directory
failed to load driver: iris

But from what I was able to understand, I was expecting it would be
available with mesa 21.0.3 since I've seen some commit about fixing
issue with it in the change logs.

I've tried to force the driver to both i965 and i915 but I either got a
warning that this GEN cannot use it or still got the same fps.
Am I right to assume that it goes to a default driver that uses the CPU
instead of the GPU?

Hello Simon,

 

I honestly don't know how Intel folks have overlooked this, but mesa in yocto not only does not enable iris, the mesa recipe does not even have an option to enable it.

 

However, it should be pretty easy to add. Please take a look at poky/meta/recipes-graphics/mesa/mesa.inc, specificially any lines that mention GALLIUMDRIVERS and matching PACKAGECONFIG,

and you should be able to add iris there, and rebuild your image. Then you can submit your first patch to yocto via oe-core mailing list ;)

 

Alex

Hello Alex,

I was able to fix the iris driver issue with the following added to mesa.inc

GALLIUMDRIVERS_append = "${@bb.utils.contains('PACKAGECONFIG', 'iris', ',iris', '', d)}"

I will look into sending the patch

thanks a lot for your help

Simon