Mesa & DRI for PPC

[xeno74]

Hi All!

Mesa 23.1.2 has been added to the Fienix Evo repositories. I suggest upgrading for improved system performance.

You can also install the new Mesa 23.1.2 with the following commands on Debian and MintPPC:

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apt update

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apt install libgl1-mesa-dri libgl1-mesa-glx mesa-utils

[xeno74]

FYI: Mesa issue (Mesa version 24.2.3-1):

[Big Endian] [r600] Terascale 3 GFX5 corruption and hangs powerpc64 PowerMac G5

[xeno74]

FYI:

Hello Christian,

Well some time past, I would like to inform you that I managed to make it work, well no longer with a HD6970 but with another card, I would like to warn you about Mesa 24.2.x, it's causing problems in big endian related to not having 3D acceleration, I suggest not updating and staying on mesa 24.1.x, we had more analysis into it https://gitlab.freedesktop.org/mesa/mesa/-/issues/11933 and https://gitlab.freedesktop.org/mesa/mesa/-/issues/12048

Have a great week, best regards,
Link.

[xeno74]

FYI: Mesa 24.3.1 Released With Many Graphics Driver Bug Fixes --phoronix.com (including Radeon R600 driver fixes)

[xeno74]

Hello everyone, I hope everything is alright.

I wonder if it could be possible to apply this patch for mesa 25.2.x, it fixes indirectly for big endian machines. The issue is it can only be applied for mesa25.2, on mesa 25.3-git it doesn' work anymore. The patch was made by caciottax86
https://gitlab.freedesktop.org/mesa/mesa/-/issues/13952

Best regards,
Link.

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--- a/src/loader/loader_dri_helper.c
+++ b/src/loader/loader_dri_helper.c
@@ -54,10 +54,10 @@
    { PIPE_FORMAT_R8G8B8A8_SRGB, __DRI_IMAGE_FOURCC_SABGR8888 },
    { PIPE_FORMAT_X8B8G8R8_UNORM, DRM_FORMAT_RGBX8888 },
    { PIPE_FORMAT_A8B8G8R8_UNORM, DRM_FORMAT_RGBA8888 },
-   { PIPE_FORMAT_X8R8G8B8_UNORM, DRM_FORMAT_BGRX8888 },
-   { PIPE_FORMAT_A8R8G8B8_UNORM, DRM_FORMAT_BGRA8888 },
    { PIPE_FORMAT_B8G8R8X8_UNORM, DRM_FORMAT_XRGB8888 },
    { PIPE_FORMAT_B8G8R8A8_UNORM, DRM_FORMAT_ARGB8888 },
+   { PIPE_FORMAT_X8R8G8B8_UNORM, DRM_FORMAT_XRGB8888 },
+   { PIPE_FORMAT_A8R8G8B8_UNORM, DRM_FORMAT_ARGB8888 },
    { PIPE_FORMAT_R8G8B8X8_UNORM, DRM_FORMAT_XBGR8888 },
    { PIPE_FORMAT_R8G8B8A8_UNORM, DRM_FORMAT_ABGR8888 },
    { PIPE_FORMAT_B10G10R10X2_UNORM, DRM_FORMAT_XRGB2101010 },

[xeno74]

• X5000/40, Radeon HD6870 and Void PPC with kernel 5.10.247 (DRM 2.50.0): glmark2 Score: 4174
• X5000/40, Radeon HD6870 and MintPPC32 with kernel 5.10.247 (DRM 2.50.0): glmark2 Score: 3857
• X5000/40, Radeon HD6870 and Void PPC with kernel 6.12.62 (DRM 2.50.0): glmark2 Score: 3549
  X5000/40, Radeon HD6870 and Void PPC with kernel 6.19.0-rc2 (DRM 2.51.0): glmark2 Score: 3600
• X5000/40, Radeon HD6870 and MintPPC32 with kernel 6.19.0-rc2 (DRM 2.51.0): glmark2 Score: 3358

• X1000, Radeon HD5870 and Void PPC with kernel 5.10.247 (DRM 2.50.0): glmark2 Score: 2653
• X1000, Radeon HD5870 and Void PPC with kernel 6.12.62 (DRM 2.50.0): glmark2 Score: 2485
• X1000, Radeon HD5870 and Void PPC with kernel 6.19.0-rc2 (DRM 2.51.0): glmark2 Score: 2568

[mintppc]

Hello,

I have been experimenting with mesa lately. I will likely build a very recent mesa 26.2.1 on ppc64 with the r300/r600 patches introduced in 26.2.0, see https://docs.mesa3d.org/relnotes/26.2.0.html

On Debian, mesa does not build anymore on ppc64. I have tried to fix it but it is too complicated for me. I spent three full days debugging. I will now build a much smaller mesa only useful for our community without drivers that are not needed.

This can also be beneficial for you guys. I hope that this very recent mesa allows us to have a working hardware acceleration again, as it was gone since 24.1.6.

Regards,
Jeroen

[mintppc]

https://www.u58733p55594.web0093.zxcs-k ... sa-26-2-1/

[xeno74]

https://www.u58733p55594.web0093.zxcs-k ... sa-26-2-1/

Great work!

[xeno74]

First, I tested Mesa 26.2.2-2 from Sid after apt unhold the old Mesa packages but it doesn't work with and without libglamor.

Second test:

I added the following line to /etc/apt/sources.list:

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deb [signed-by=/etc/apt/keyrings/MintPPC32_additional_repository.asc] https://u58733p55594.web0093.zxcs-klant.nl/mesa-26.2 ./

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sudo apt install libgl1-mesa-dri=26.2.1-2 libgbm1=26.2.1-2 mesa-libgallium=26.2.1-2 libegl-mesa0=26.2.1-2 libglx-mesa0=26.2.1-2

Unfortunately, it doesn't work either. Then I tested it with the following xorg.conf with libglamor.

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Section "Device"
Identifier "AMD FirePro V7900 (Cayman PRO GL)"
Driver "radeon"
Option "DRI3" "on"
# Option "NoAccel" "true"
# Option "DRI" "2"
Option "AccelMethod" "glamor"
# Options "EXAPixmaps" "false"
EndSection

Unfortunately glamor doesn't work. (Black screen with a mouse pointer)