[Bug 101736] Disabling the working OpenGL 2.1 in the i915 driver

[Bug 101736] Disabling the working OpenGL 2.1 in the i915 driver

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https://bugs.freedesktop.org/show_bug.cgi?id=101736

            Bug ID: 101736
           Summary: Disabling the working OpenGL 2.1 in the i915 driver
           Product: Mesa
           Version: 17.1
          Hardware: x86 (IA32)
                OS: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Drivers/DRI/i915
          Assignee: dri-devel@lists.freedesktop.org
          Reporter: indie@420blaze.it
        QA Contact: dri-devel@lists.freedesktop.org

Created attachment 132582
  --> https://bugs.freedesktop.org/attachment.cgi?id=132582&action=edit
OS details

I have a problem with starting programs that require at least OpenGL 2.1
support. You've been disabled OpenGL 2.1 support in this commit:
https://cgit.freedesktop.org/mesa/mesa/commit/?id=a1891da7c865c80d95c450abfc0d2bc49db5f678
with this reasons
https://lists.freedesktop.org/archives/mesa-dev/2017-January/142691.html
So after graphic drivers update from ppa:oibaf/graphics-drivers repo two months
ago I've got an issue which very similar to this:
https://bugs.freedesktop.org/show_bug.cgi?id=100189 . Now this issue is solved,
but the current driver package doesn't support OpenGL 2.1 at all.
Krita, for example, is one of the best graphics applications that can replace
Photoshop for linux. But without OpenGL 2.1 support it has unpleasant incurable
bugs. There are some games like Don't Starve for linux that can't start at all
without OpenGL 2.1 support. The absence of this library it self can not affect
the operation of programs in any way by causing a critical failure. Therefore,
I can not provide a bugreport with a certain segfault for you. But some
programs can not work properly without it at all. So I just need to reenable
Opengl 2.1 support as it was before. Is there a way to do this? This driver has
a some bugs with OpenGL 2.1 support and it's no longer supported by it's
developers, but it's better to use it than not being able to run some programs
at all.

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[Bug 101736] Disabling working OpenGL 2.1 in the i915 driver

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https://bugs.freedesktop.org/show_bug.cgi?id=101736

Indie <indie@420blaze.it> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|Disabling the working       |Disabling working OpenGL
                   |OpenGL 2.1 in the i915      |2.1 in the i915 driver
                   |driver                      |

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[Bug 101736] Disabling working OpenGL 2.1 in the i915 driver

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https://bugs.freedesktop.org/show_bug.cgi?id=101736

--- Comment #1 from Emil Velikov <emil.l.velikov@gmail.com> ---
Afaict the drirc bits were left so that people can override them based on their
liking. Something like the following should do it.

Do enhance to your liking. Note that separate hunk is needed for each
application.


--- a/src/mesa/drivers/dri/common/drirc
+++ b/src/mesa/drivers/dri/common/drirc
@@ -187,4 +187,10 @@ TODO: document the other workarounds.
            <option name="glx_disable_oml_sync_control" value="true" />
         </application>
     </device>
+    <device driver="i915">
+        <application name="App symbolic name" executable="actual-binary-name">
+            <option name="fragment_shader" value="true" />
+            <option name="stub_occlusion_query" value="true" />
+        </application>
+    </device>

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[Bug 101736] Disabling working OpenGL 2.1 in the i915 driver

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https://bugs.freedesktop.org/show_bug.cgi?id=101736

--- Comment #2 from Indie <indie@420blaze.it> ---
The method you proposed doesn't work, because the system doesn't have a working
version of OpenGL 2.1 libraries. See the attachment. I need a version of the
drivers in which the OpenGL 2.1 libraries are installed.

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[Bug 101736] Disabling working OpenGL 2.1 in the i915 driver

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https://bugs.freedesktop.org/show_bug.cgi?id=101736

--- Comment #3 from Indie <indie@420blaze.it> ---
Where can I find them?

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[Bug 101736] Disabling working OpenGL 2.1 in the i915 driver

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https://bugs.freedesktop.org/show_bug.cgi?id=101736

--- Comment #4 from Emil Velikov <emil.l.velikov@gmail.com> ---
(In reply to Indie from comment #2)
> The method you proposed doesn't work, because the system doesn't have a
> working version of OpenGL 2.1 libraries. See the attachment. I need a
> version of the drivers in which the OpenGL 2.1 libraries are installed.

Have you actually tried it? Admittedly I'm not expert in i915 code (despite
being around a few times) although the suggestion should just work.

(In reply to Indie from comment #3)
> Where can I find them?

There is no such thing as "version of OpenGL 2.1 libraries". There's should be
just one libGL.so

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[Bug 101736] Disabling working OpenGL 2.1 in the i915 driver

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https://bugs.freedesktop.org/show_bug.cgi?id=101736

--- Comment #5 from Indie <indie@420blaze.it> ---
(In reply to Emil Velikov from comment #4)
> Have you actually tried it? Admittedly I'm not expert in i915 code (despite
> being around a few times) although the suggestion should just work.
Yes I've edited the file /etc/drirc as you said and successfully parsed it with
driconf after adding this lines:
    <device driver="i915">
        <application name="Krita" executable="krita">
             <option name="fragment_shader" value="true" />
             <option name="stub_occlusion_query" value="true" />
        </application>
        <application name="Don't Starve" executable="/home/user/GOG Games/Dont
Starve/start.sh">
             <option name="fragment_shader" value="true" />
             <option name="stub_occlusion_query" value="true" />
        </application>
None of these programs were launched in the right mode, and they still require
support for OpenGL 2.1.

(In reply to Emil Velikov from comment #4)
> There is no such thing as "version of OpenGL 2.1 libraries". There's should
> be just one libGL.so
I apologize for not saying at once, I'm not an experienced Linux user, and I
don't know what is in this library and where is it located. But this is what I
get using glxinfo | grep OpenGL command in terminal:
OpenGL vendor string: Intel Open Source Technology Center
OpenGL renderer string: Mesa DRI Intel(R) 945G x86/MMX/SSE2
OpenGL version string: 1.4 Mesa 17.2.0-devel
OpenGL extensions:
OpenGL ES profile version string: OpenGL ES 2.0 Mesa 17.2.0-devel
OpenGL ES profile shading language version string: OpenGL ES GLSL ES 1.0.16
OpenGL ES profile extensions:

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[Bug 101736] Disabling working OpenGL 2.1 in the i915 driver

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https://bugs.freedesktop.org/show_bug.cgi?id=101736

--- Comment #6 from Indie <indie@420blaze.it> ---
Before this ill-fated update, these two programs worked without significant
problems. There was one bug when changing the size of application window
working with these OpenGL 2.1 graphics libraries. If you change the proportions
of the window larger than a certain value, then on the sides of this window the
image starts blinking constantly. But it's better to have this bug than not be
able to run these programs at all.

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[Bug 101736] Disabling working OpenGL 2.1 in the i915 driver

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https://bugs.freedesktop.org/show_bug.cgi?id=101736

--- Comment #7 from Indie <indie@420blaze.it> ---
Important information: As far as I can tell, I used to have a gallium i915
driver installed earlier. But now the developer of this repository has switched
to classic version of these drivers. But I'm not so sure in this information
because I'm new to these things.
Also in the first post, there is a link to the bug that I had. This bug is
indicated as belonging to gallium i915g driver. It's also known that this
driver is no longer supported. But I need it in the form in which it was before
appearance of segfault in i915_dri.so library that's described there:
https://bugs.freedesktop.org/show_bug.cgi?id=100189

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[Bug 101736] Enabling disabled working OpenGL 2.1 in the i915 driver

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https://bugs.freedesktop.org/show_bug.cgi?id=101736

Indie <indie@420blaze.it> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|Disabling working OpenGL    |Enabling disabled working
                   |2.1 in the i915 driver      |OpenGL 2.1 in the i915
                   |                            |driver
          Component|Drivers/DRI/i915            |Drivers/Gallium/i915g

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[Bug 101736] Enabling disabled working OpenGL 2.1 in the i915 driver

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https://bugs.freedesktop.org/show_bug.cgi?id=101736

--- Comment #8 from Emil Velikov <emil.l.velikov@gmail.com> ---
(In reply to Indie from comment #5)

>         <application name="Don't Starve" executable="/home/user/GOG 
> Games/Dont Starve/start.sh">
As said above: this must be the actual binary name - no path, no script.
Take a look inside the script for the details.

If you have a $HOME/.drirc file update that one as well.

> I apologize for not saying at once, I'm not an experienced Linux user, and I
> don't know what is in this library and where is it located. But this is what
> I get using glxinfo | grep OpenGL command in terminal:
No worries. If you want to see things in action add "glxinfo" as the binary
name and observe the output ;-)

I won't object if you really want to address the gallium (i915g) issue, not
sure how others will feel.

-Emil

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[Bug 101736] Enabling disabled working OpenGL 2.1 in the i915 driver

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--- Comment #9 from Indie <indie@420blaze.it> ---
(In reply to Emil Velikov from comment #8)
> As said above: this must be the actual binary name - no path, no script.
> Take a look inside the script for the details.
Inside this file a lot of things are started. There are Wine, ScummVM and
something else.
In addition, I wasn't able to run the Krita with support of OpenGL 2.1. Given
that it's written there correctly.

(In reply to Emil Velikov from comment #8)
> No worries. If you want to see things in action add "glxinfo" as the binary
> name and observe the output ;-)
However, I was able to run Krita and Don't Starve, using this commands:
MESA_GL_VERSION_OVERRIDE=2.1 /home/user/GOG\ Games/Dont\ Starve/start.sh
MESA_GL_VERSION_OVERRIDE=2.1 krita

But earlier this game started and worked much faster, using older drivers than
using this command now.

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[Bug 101736] Enabling disabled working OpenGL 2.1 in the i915 driver

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https://bugs.freedesktop.org/show_bug.cgi?id=101736

--- Comment #10 from Indie <indie@420blaze.it> ---
If I Use this commands there are about one frame per 20-30 seconds. Previously,
everything worked at a speed of 15-20 frames per second. So using these
commands isn't an option.

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[Bug 101736] Enabling disabled working OpenGL 2.1 in the i915 driver

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Indie <indie@420blaze.it> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |INVALID
             Status|NEW                         |RESOLVED

--- Comment #11 from Indie <indie@420blaze.it> ---
As I figured out I need not only OpenGL 2.1 drivers support, but also i915
Gallium 2d driver acceleration.

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