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ender4

Member

Registered: 2011-01-11

Posts: 21

glxinfo gives me lower opengl version than I expect for ATI card

I have a Radeon HD 7750.  According to the specs it supports OpenGL 4.2.

However, when I run glxinfo it says that the version string it gives me

OpenGL vendor string: VMware, Inc.
OpenGL renderer string: Gallium 0.4 on llvmpipe (LLVM 3.3, 128 bits)
OpenGL version string: 2.1 Mesa 9.2.4
OpenGL shading language version string: 1.30

I am using the open source drivers (xf86-video-ati).

I might expect the OpenGL version to be a little lower, but 2.1 is much lower than 4.2.

what is going on? Do I have something configured wrong? Is the 2.1 version incorrect? Should I install the catalyst drivers?

Lone_Wolf

Administrator

From: Netherlands, Europe

Registered: 2005-10-04

Posts: 15,261

Re: glxinfo gives me lower opengl version than I expect for ATI card

- mesa only partially supports openGl 4, most mesa drivers are now at opengl 3.1 or 3.2 .

OpenGL renderer string: Gallium 0.4 on llvmpipe (LLVM 3.3, 128 bits)

That line means you're NOT using HW accelaration, but software emulation.
So something is wrong with your setup.

If you do need OpenGL 3.3 or higher support, catalyst is for now the only option.

Last edited by Lone_Wolf (2013-12-07 13:44:40)

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ender4

Member

Registered: 2011-01-11

Posts: 21

Re: glxinfo gives me lower opengl version than I expect for ATI card

I changed the accelmethod from EXA to glamor, so my Xorg.conf for graphics looks like

Section "Module"
        Load "dri2"
        Load "glamoregl"
EndSection

Section "Device"
        Identifier              "My Graphics Card"
        Driver                  "radeon"
        Option "ColorTiling"    "on"
        Option "AccelMethod"    "glamor"
EndSection

and my renderer string is

 OpenGL renderer string: Gallium 0.4 on AMD CAPE VERDE

do I have hardware acceleration now? it still says OpenGL version string is 2.1 mesa.

ewaller

Administrator

From: Pasadena, CA

Registered: 2009-07-13

Posts: 20,690

Re: glxinfo gives me lower opengl version than I expect for ATI card

Do I have hardware acceleration now? it still says OpenGL version string is 2.1 mesa.

What does glxinfo tell you?

ewaller$@$odin ~ [1]1003 %glxinfo | grep direct
direct rendering: Yes
ewaller$@$odin ~ 1004 %

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Lone_Wolf

Administrator

From: Netherlands, Europe

Registered: 2005-10-04

Posts: 15,261

Re: glxinfo gives me lower opengl version than I expect for ATI card

$ glxinfo | grep OpenGL
OpenGL vendor string: X.Org
OpenGL renderer string: Gallium 0.4 on AMD RV770
OpenGL core profile version string: 3.1 (Core Profile) Mesa 9.2.4
OpenGL core profile shading language version string: 1.40
OpenGL core profile context flags: (none)
OpenGL core profile extensions:
OpenGL version string: 3.0 Mesa 9.2.4
OpenGL shading language version string: 1.30
OpenGL context flags: (none)
OpenGL extensions:
$

Please also post the output of glxinfo | grep OpenGL

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Disliking systemd intensely, but not satisfied with alternatives so focusing on taming systemd.

clean chroot building not flexible enough ?
Try clean chroot manager by graysky

Gusar

Member

Registered: 2009-08-25

Posts: 3,607

Re: glxinfo gives me lower opengl version than I expect for ATI card

@ender4: You have a radeonSI card, 2.1 is all you get. Once Arch packages Mesa 10, you'll have 3.1.

@ewaller: The direct rendering line doesn't tell anything anymore. It'll say "yes" even with a software renderer. The "renderer string" line is what's important.