OpenGL.Net
OpenGL.Net copied to clipboard
luca-piccioni
RPI3: 'unable to create window surface' exception
I'm trying to get a VideoCore sample working on RPI 3 (Raspbian strech, mono 5.10.0.160) using latest 0.7.1 release.
When using Fake KMS driver: getting 'unable to create window surface' exception at this line https://github.com/luca-piccioni/OpenGL.Net/blob/354e0bbfd92718c847e27bf8cae3c740fe2f829f/Samples/HelloTriangle.VideoCore/Program.cs#L54
When using Full KMS driver: getting an exception 'unable to get BCM window size' at https://github.com/luca-piccioni/OpenGL.Net/blob/354e0bbfd92718c847e27bf8cae3c740fe2f829f/Samples/HelloTriangle.VideoCore/Program.cs#L49
I'm not sure if this somehow related to my system configuration. Is there some tutorial on getting this working on Raspbian?
Can you describe your execution environment? I've run the sample application on RPi2, using VC4+GLES2: note that the application does not require X11, since the VC4 library exposes a basic windowing system without any backend (just like Kodi running without X11).
Are you running under X11? Then your application must be set up just like any X11 application (GLX+GL). Probably you need to disable EGL initialization to get it work (set environment variable OPENGL_NET_EGL_STATIC_INIT to "NO").
I've tried from both X11 and not. Also tried OPENGL_NET_EGL_STATIC_INIT. There were always different erros that I mostly described above. So I just started from scratch, reimaged latest raspbian Stretch, updated/upgraded etc.
The first proplem was Stretch does not have libEGL libs for some reason. I did core upgrade as per this post: https://www.raspberrypi.org/forums/viewtopic.php?t=191638
Second problem I cannot resolve is: * failed to add service - already in use Some info here: https://www.raspberrypi.org/forums/viewtopic.php?p=1239827#p1239827 and: https://raspberrypi.stackexchange.com/questions/75219/fixing-failed-to-add-service-already-in-use-error-programmatically
Same problem here. Fixed it by adding Bcm.bcm_host_init(); at the top of the VideoCoreWindow's constructor. This call was originally wrapped in an event handler, which is never called with my setup.
