[Mesa-dev] Drooping multiple driver support in EGL?

[Jose Fonseca]

----- Original Message -----
> Hi list,
> 
> Multiple driver support in EGL is hard to get right, if not
> impossible.
> On Linux desktop, we almost always want to use egl_dri2.  It allows
> EGL
> to loads DRI2 drivers, thus allowing it to share DRI2 drivers with
> libGL.
> 
> In one case where the app wants to use OpenVG, libEGL needs to load
> egl_gallium instead.  The problem comes from that we cannot know that
> an
> OpenVG context is to be created until it is created.  But before a
> context can be created, EGL needs to be initialized and an EGLConfig
> needs to be chosen.  So when EGL is to be initialized, we need to
> load
> and initilaize all EGL drivers.  When an EGLConfig is to be picked,
> we
> need to pick it from all drivers.

Couldn't we restructure this such that OpenVG (and all other state trackers on Linux) still use a dri2 driver, but one which exposes an additional (gallium specific) interface?

Jose