Headless mode for GL plugin

[Alexander Yanin]

​Thanks! Fine, what I need to do to make it work on Intel Kabylake with
Mesa and without neither xorg nor wayland? Would it work right out of the
box or should I perform some additional actions to make it run?

2018-03-23 14:50 GMT+03:00 Matthew Waters <ystreet00 at gmail.com>:

> Accessing the GPU without a windowing system is something that is very
> specific to every driver/hardware combination.  We support (with 1.14) one
> method using kms and a libgbm compatible driver which are used by all of
> the Mesa drivers.  Some other embedded systems (rpi, imx6) have other ways.
> That nvidia blog post you've linked contains references to
> EGL_EXT_device_query
> <https://www.khronos.org/registry/EGL/extensions/EXT/EGL_EXT_device_query.txt>
> which I guess is nvidia's way of performing a similar thing and such a
> method could be added to the GStreamer GL library and plugins.
>
> Cheers
> -Matt
>
>
> On 23/03/18 21:10, Alexander Yanin wrote:
>
> Hi!
>
> Is it possible to use GL elements (like glvideomixer, glupload, gleffects,
> etc) without anything like Wayland, Xorg, etc? In particular, I want to use
> glvideomixer instead of compositor on a server without any display
> attached. I heard about a possible workaround using frame buffer, but I
> didn't manage to find a way to use glvideomixer without xorg or wayland. It
> crushes on context initialization.
>
> Here is the output:
>
> glmixer gstglbasemixer.c:217:_get_gl_context:<mixer> error: Failed to
> initialize egl: EGL_NOT_INITIALIZED
> glwindow gstglwindow.c:285:gst_gl_window_new: Could not create window.
> user specified (null), creating dummy window
> glcontext gstglcontext.c:1235:gst_gl_context_create_thread:<glcontextegl48>
> Failed to create context
>
> So, is there a way to bypass this issue without using xorg or wayland? I
> heard that it is possible to initialize EGL without xorg [1]. Is it
> possible to use this approach within gl elements?
>
> [1] - https://devblogs.nvidia.com/egl-eye-opengl-visualization-
> without-x-server/
>
>
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>
>
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