[Mesa-dev] Can't get self-built Mesa to work on the Raspberry Pi 4

[lists at luckyxxl.de]

Hi Iago,

Thank you very much, that did it!

Lukas


On 2021-01-07 08:26, Iago Toral wrote:
> Hi Lukas,
> 
> you need:
> 
> -Dgallium-drivers=v3d,vc4,kmsro
> 
> Iago
> 
> On Wed, 2021-01-06 at 12:22 +0100, lists at luckyxxl.de wrote:
>> Hi all,
>> 
>> In order to check whether a OpenGL ES driver bug I'm hitting on the
>> Raspberry Pi 4 still appears in the latest Mesa version, I'm trying
>> to
>> build Mesa myself and run my application with that. Unfortunately
>> I'm
>> having no success with either 19.3.2 (the version distributed with
>> raspbian), 20.3.2 (the latest release) or the current master. Each
>> time
>> the driver initialization fails with the following messages printed
>> to
>> the console:
>> 
>> libGL error: failed to create dri screen
>> libGL error: failed to load driver: vc4
>> 
>> This is my meson setup command line:
>> 
>> ~/Downloads/meson-0.56.0/meson.py setup -Ddri-drivers=
>> -Dgallium-drivers=v3d,vc4 -Dvulkan-drivers= -Dplatforms=x11
>> -Dbuildtype=debug -Dbackend=ninja -Dprefix=/home/pi/mesa-build build
>> 
>> (vc4 seems to be required in the gallium-drivers option, otherwise
>> it
>> failed with 'libGL error: MESA-LOADER: failed to open vc4 [...]'. I
>> guess this makes sense given the dependency on vc4 as explained here
>> https://docs.mesa3d.org/drivers/v3d.html ?)
>> 
>> I'm having this issue using both SDL or freeglut and either starting
>> the
>> app from ssh (using 'export DISPLAY=:0') or directly on the desktop.
>> 
>> I'm a total beginner when it comes to Mesa and the pi graphics
>> driver
>> stack, so any help would be highly appreciated :) Thanks!
>> 
>> Lukas
>> _______________________________________________
>> mesa-dev mailing list
>> mesa-dev at lists.freedesktop.org
>> https://lists.freedesktop.org/mailman/listinfo/mesa-dev
>> 
> 
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