[Mesa-dev] Trouble building gallium x11/softpipe

Chia-I Wu olvaffe at gmail.com
Wed Sep 8 22:23:05 PDT 2010

On Thu, Sep 9, 2010 at 6:39 AM, Gregory Prisament
<greg at lycheesoftware.com> wrote:
> With some debugging I've figured out that setting EGL_DRIVERS_PATH to
> $MESA_ROOT/lib/egl fixes my problem.   I'm back in business! ('til I hit the
> next roadblock at least).  Sorry for the spam.
There is now a single gallium-based EGL driver, egl_gallium.so.  Its role is
similar to DRI libGL.so in that it is a slim layer that loads the hardware
drivers (pipe_xxx.so) and client APIs (st_xxx.so), found in $EGL_DRIVERS_PATH.

If the setup is too complex for your need, you may also consider build a
egl_gallium.so that statically links to the softpipe/llvmpipe and the client
APIs selected at build time.  Have a look at targets/egl-gdi/ as an example.

The suggested way to configure Mesa has also changed to:

  $ ./configure --enable-gles-overlay --with-state-trackers=egl,vega

> Cheers,
> -Greg Prisament, Lychee Software
> On Wed, Sep 8, 2010 at 2:31 PM, Gregory Prisament <greg at lycheesoftware.com>
> wrote:
>> Hi,
>> I'm working with the Khronos Group to implement several EGL extensions in
>> gallium3d.  Up until now, I've been working with a mesa codebase that I
>> grabbed way back in April.  I'm now trying to migrate to the latest version
>> of mesa (and "rebase" daily) so that I can send my changes to you folk for
>> review.
>> However, it seems my old ways of building no longer work.
>> Specifically, I used to do:
>> ./autogen.sh --with-state-trackers=egl,es,vega --enable-gallium-swrast
>> make
>> export EGL_DRIVER=$MESA_ROOT/lib/egl_x11_swrast.so
>> When I try that today, egl_x11_swrast.so does not get built, and (not
>> surprisingly) EGL initialization fails.
>> Any hints?  Are the build instructions documented somewhere?  This
>> trial-and-error approach is getting tiresome ;)
>> Thanks so much for your help!  If you can get me through this I'll have
>> some exciting patches for you guys!
>> -Greg Prisament, Lychee Software
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olv at LunarG.com

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