wine users - Nov 2010 - Is it possible to configure OpenGL software rendering?

I have an application that uses opengl.
If no hardware opengl support is available it works fine (not a highend
application).

If opengl hw support is available on the mac platform it fails because of the
not complete opengl cappabilities in xquartz.

So: can I enforce the use of software opengl renderin instead of hardware
rendering? If yes: how can i configure this?

> So: can I enforce the use of software opengl renderin instead of hardware
rendering? If yes: how can i configure this?
On OS X (as with Mesa-based drivers I believe) you should be able to force
OpenGL software rendering with an environment variable

  export LIBGL_ALWAYS_SOFTWARE=1
  ./your_program

Or:

  env LIBGL_ALWAYS_SOFTWARE=1 /path/to/your_program

The LIBGL_ALLOW_SOFTWARE setting may also work for you as it allows fallback to
software rendering, but I've never found it to work as reliably as
defaulting to hardware or forcing software rendering. Not sure how this will
play with Wine but software rendering is a performance killer, and software
renderers may or may not support the features the program needs even if they
support the "right" OpenGL version. -ryan

tigono wrote:
> I have an application that uses opengl.
> If no hardware opengl support is available it works fine (not a highend
application).
> 
> If opengl hw support is available on the mac platform it fails because of
the not complete opengl cappabilities in xquartz.
> 
> So: can I enforce the use of software opengl renderin instead of hardware
rendering? If yes: how can i configure this?

no idea to your actual question... but Xquartz has access to all OpenGL that OSX
has... if there is a problem, it might be a driver problem.  Xquartz doesn't
run its own driver, its basically like a passthrough to quartz running the main
OS graphics driver.

tigono <wineforum-user at winehq.org> wrote:
>
>thanks for your infos. The problem is a documented opengl bug in xquartz
that was not fixed in the last 2 years (fbconfig
>buffer issue). So it would be fine to do the same as e.g. in virtualbox
where you have software rendering support of
>opengl ...
Don't know what you are referring to as far as the bug (would be nice to
provide a bug report number.)  There may be a workaround that I'm unaware of
that allows configuration for software GL support only in XQuartz.  I have not
experienced this particular problems.

There is and has been much progress in the XQuartz project.  What version of the
product are you using at the present time?

Software support for OpenGL depends mainly on the program.  For instance, I run
several of the Quake/Doom games under Wine for games testing.  All of them have
software GL support as well as Hardware GL support.  I have to select software
in the game options and then GL support is provided by the particular game. 
There may also be a registry setting that you can set to force OpenGL support by
Wine vice D3D support.

As far as Wine is concerned, OpenGL is provided by the underlying operating
system or hardware.

James McKenzie
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