Recently, I came across a running error when I try to run the test demo named dfbtest_gl1.con the imx6 platform. Error message like this:
IDirectFB::GetInterface( 'IDirectFBGL2' ) failed!
--> The specified file has not been found
Running env as follows:
1. directfb version: 1.7.4
2. kernel version: Linux linux 3.10.53-88112-g10d896c #1 SMP PREEMPT Sat Jun 27 14:59:45 CST 2015 armv7l GNU/Linux (shown by 'uname -a')
In addition, the board card can truely support OpenGL/ES related specialities as the demos provided by our manufacturer can run correctly and
the specs are declared clearly, and the test demos related to non-OpenGL/ES can run correctly inclued in the directfb 1.7.4 distribution. In fact, I
have tested all the test demos, such dfbtest_gl1.c, dfbtest_gl2.c, dfbtest_gl3.c and dfbtest_old_gl2.c, and I got the similar errors related to initialize
the OpenGL/ES painting env.
To tell the truth, I have searched all the clues by the Internet, but got nothing to solve the problem. Actually, I have tried the method which
proved to be wrong. I tried to use the egl as the interface between the OpenGL/ES and directfb. First, use directfb api (CreateWindow()) to create
the window; second, use the returned value like IDirectFBWindow * to pass to the egl api (eglCreateWindowSurface()), to create the surface related
to OpenGL/ES. Unfortunately, I got the running error which indicates to EGL_BAD_NATIVE_WINDOW with errno 0x300B.