[Mesa-dev] [Bug 32254] EGL+OpenGL API failed to work

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=32254

--- Comment #6 from Christopher James Halse Rogers <chalserogers at gmail.com> 2010-12-09 18:24:31 PST ---
It looks like st_GL has been built with tls enabled, but the EGL loader has not
been(In reply to comment #5)
> Created an attachment (id=40975)
 View: https://bugs.freedesktop.org/attachment.cgi?id=40975
 Review: https://bugs.freedesktop.org/review?bug=32254&attachment=40975

> Link st_GL to libGL
> 
> Does this patch help?
> 
> _glapi_tls_Context is defined in libGL.so, libGLESv1_CM.so, and libGLESv2.so. 
> But since st_GL.so can support all 3 APIs, it cannot link to any of them at
> compile time.  If the patch works, I will look into if there is any dlopen
> trick that may help the situation.

I don't quite see how you can actually use the OpenGL API in the EGL without
having a libGL built for EGL use like libGLES* are.  As far as I can tell, none
of the GL entry points are actually exported for you to link with, and
eglGetProcAddress shouldn't let you query for core GL functions (I suspect that
mesa's eglGetProcAddress will, but that's not guaranteed by the spec).  I must
be missing something.

If mesa built such a libGL.so that could define the _glapi_tls_Context symbol
in the same way that libGLES*.so currently do.

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