[Interest] how to build the xcb-plugin with egl support?

[Andrew Knight]

On 03/02/2015 10:28 PM, Thiago Macieira wrote:
> On Monday 02 March 2015 12:06:23 Shi Yan wrote:
>> I'm trying to make my own platform plugin with egl. but I always get a
>> black screen.
>>
>> I’m trying to build the xcb-plugin with egl support, so that I can debug it
>> and compare it with my implementation.
>>
>> I noticed if CONFIG has x11_egl, then it will use egl instead of glx.
>>
>> but I tried to configure the Qt project with ./configure -opengl x11_egl,
>> it won’t work.
>>
>> I can’t find the right way to enable egl. do you know?
>
> configure -opengl es2
>

Or if you want to use desktop GL without GLX, try -opengl desktop 
-no-xcb-xlib

You might be better off with EGLFS (+ X11 hooks), though. That option is 
more geared toward custom embedded development. See Laszlo's excellent 
post about the improvements for Qt 5.5: 
http://blog.qt.io/blog/2015/01/20/qt-weekly-23-qt-5-5-enhancements-for-linux-graphics-and-input-stacks/