[Bug 102200] Wrong shader preprocessor string

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=102200

            Bug ID: 102200
           Summary: Wrong shader preprocessor string
           Product: Mesa
           Version: 17.1
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/DRI/i965
          Assignee: intel-3d-bugs at lists.freedesktop.org
          Reporter: max.augsburg at gmx.de
        QA Contact: intel-3d-bugs at lists.freedesktop.org

Hello,

I have an Intel HD620 graphic Card (Kaby Lake) and I wanted to use an OpenGL
audio plugin. I run Mageia 6 with Mesa 17.1.5 on a 64-bit System.

Here is my Output of glxinfo | grep OpenGL:

"OpenGL vendor string: Intel Open Source Technology Center
OpenGL renderer string: Mesa DRI Intel(R) HD Graphics 620 (Kaby Lake GT2) 
OpenGL core profile version string: 4.5 (Core Profile) Mesa 17.1.5
OpenGL core profile shading language version string: 4.50
OpenGL core profile context flags: (none)
OpenGL core profile profile mask: core profile
OpenGL core profile extensions:
OpenGL version string: 3.0 Mesa 17.1.5
OpenGL shading language version string: 1.30
OpenGL context flags: (none)
OpenGL extensions:
OpenGL ES profile version string: OpenGL ES 3.2 Mesa 17.1.5
OpenGL ES profile shading language version string: OpenGL ES GLSL ES 3.20
OpenGL ES profile extensions:"


When I try to load the OpenGL audio plugin obviously the wrong shader
preprocessor string seems to be passed. The following error message is
outputed:

"** INFO: AF210 - System GL Version is: 3.0 Mesa 17.1.5
** INFO: AF210 - System GLSL Version is: 1.30 : #version 100

AF210::GFX_renderer::GFX-VXSHDR-03 failed to compile
0:1(10): error: GLSL 1.50 is not supported. Supported versions are: 1.10, 1.20,
1.30, 1.00 ES, 3.00 ES, 3.10 ES, and 3.20 ES

[...]"


But the developer of the Audio plugin expected accordingly
https://en.wikipedia.org/wiki/OpenGL_Shading_Language#Versions the following
string at the beginning:

"** INFO: AF210 - System GLSL Version is: 1.30 : #version 130"


Because the System seems not to have Version 1.30 the Audio plugin falls back
to GLSL Version 1.50 which the system doesn't support. 

I don't know whether this is a Mesa Bug. To be honest I have not a hunch about
OpenGL. The audio plugin is OverToneDSP AF-210. A demo can be downloaded from
https://www.overtonedsp.co.uk/download/download_af210/index.html
You can find my bug report at OvertoneDSP at
http://www.kvraudio.com/forum/viewtopic.php?f=212&t=489394

It would be great if you could help me.

Thanks in advance,
Max

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