[Mesa-users] Strangely low OpenGL

[Benjamin Bellec]

Hi,

The fact that the REDWOOD cards (your HD 5730M is a part of the REDWOOD
family card) are OpenGL 4.4 compliant is not completely true. As you can
see in the Wikiepedia table
<https://en.wikipedia.org/wiki/List_of_AMD_graphics_processing_units#Evergreen_.28HD_5xxx.29_Series>,
the REDWOOD lacks Double Precision support (the red column), which is a
mandatory feature to support the "ARB_gpu_shader_fp64
<https://www.opengl.org/registry/specs/ARB/gpu_shader_fp64.txt>" extension,
as far as I know. This extension is part of OpenGL 4.0 so the REDWOOD cards
are definitely stuck to OpenGL 3.3.

Regards.

--
*Benjamin*

2016-05-29 14:38 GMT+02:00 Constantine <Hi-Angel at yandex.ru>:

> Hello! I have Radeon HD5730 supporting up to OpenGL 4.4. (
>
> https://en.wikipedia.org/wiki/List_of_AMD_graphics_processing_units#Mobility_Radeon_HD_5xxx_Series
> ). Its driver is r600:
>
>         $ grep r600 /var/log/Xorg.0.log
>         [    86.840] (II) RADEON(0): [DRI2]   DRI driver: r600
>         [    86.840] (II) RADEON(0): [DRI2]   VDPAU driver: r600
>         [    86.938] (II) AIGLX: Loaded and initialized r600
>
> According to news I saw and the https://mesamatrix.net/ , the driver fully
> supports OpenGL 4.1. But why do I see OpenGL 3.3? I.e.:
>
>         $ glxinfo | grep version
>         server glx version string: 1.4
>         client glx version string: 1.4
>         GLX version: 1.4
>         OpenGL core profile version string: 3.3 (Core Profile) Mesa
> 11.3.0-devel
> (git-329d115 2016-05-26 trusty-oibaf-ppa)
>         OpenGL core profile shading language version string: 3.30
>         OpenGL version string: 3.0 Mesa 11.3.0-devel (git-329d115
> 2016-05-26
> trusty-oibaf-ppa)
>         OpenGL shading language version string: 1.30
>         OpenGL ES profile version string: OpenGL ES 3.0 Mesa 11.3.0-devel
> (git-329d115 2016-05-26 trusty-oibaf-ppa)
>         OpenGL ES profile shading language version string: OpenGL ES GLSL
> ES 3.00
>
> OpenGL-4.1 were hit by r600 in December 2015, and the build I'm using — you
> can see the date — is 26 May 2016. Although the Mesa package I'm using is
> neither from distro, nor compiled by me, I really doubt that compiling by
> myself would change anything in this case (right?).
>
> _______________________________________________
> mesa-users mailing list
> mesa-users at lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/mesa-users
>
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