Re: [opensuse-arm] Graphics acceleration

On 09/02/2020 20:26, Stefan Seyfried wrote:

Am 09.02.20 um 17:05 schrieb Matthias Brugger:

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Hi Axel,

On 09/02/2020 16:33, Axel Braun wrote:

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Gesendet: Sonntag, 02. Februar 2020 um 22:16 Uhr Von: "Axel Braun" An: opensuse-arm@opensuse.org Betreff: [opensuse-arm] Graphics acceleration

quick question...is there a possibility to accelerate the graphics output for a Raspi 3? There is a package X11-raspberrypi, but that seems not to contain any drivers or hints

To answer my own question: I stumbled over xf86-video-fbturbo, which seems to offer what I'm looking for:

Hardware accelerated window moving/scrolling on Raspberry Pi (using the BCM2835 DMA Controller)

hwinfo | grep bcm2835 gives a bunch of entries

In fact loading the module fails:

raspi:/home/test # insmod /usr/lib64/xorg/modules/drivers/fbturbo_drv.so insmod: ERROR: could not insert module /usr/lib64/xorg/modules/drivers/ fbturbo_drv.so: Invalid module format

Right, *.so is not a kernel module. I should have catched that...

Most likely, by the name and location, this is *not* a kernel module, but an Xorg driver.

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Any idea what this means, or how to solve it? Or is ist the wrong driver at all?

Hm, that's strange. Do you boot a custom kernel?

I asked our graphics specialist Patrik (in CC) and he told me the following:

<paste> To enable 3D acceleration you need to: 1) Install Mesa-dri-vc4 package 2) Edit /etc/X11/Xorg.conf.d/20-kms.conf and remove the line: Option "AccelMethod" "none"

This will enable Mesa 3D acceleration and 2D acceleration in X with Glamor.

Does that also work with the upstream/openSUSE kernel?

We have to ask Patrik as he provided the info. I added him back to the CC list, as you (accidentally?) dropped him. Regards, Matthias

My experience with almost anything hw-accelerated on raspberry Pi (I only tried video decoding and encoding for now) is, that it only works on 32bits (the code is basically a NOP for 64bit userspace) and on raspbian-patched kernels.

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