Windowed OpenGLES sample

[mslinklater]

Hi. I'm an experienced C++ graphics programmer but pretty dumb at Linux. Does anyone know of any sample code for the Pi to bring up a window in X with GLES running in it ?

Thanks

[-rst-]

As far as I know, on the RPi there is no X to GL(ES) integration (like GLX) yet - the X window and the GLES 'window' need to be created separately and made to align in your application code (which might lead to the GLES to lag behind when dragging the X window - for example Minecraft seemed to suffer from this) or some sort of copy pixels from an EGL context to the X window must be implemented like https://github.com/PaulHaeberli/pi-eglonx (possibly slow).

[mung]

Hi. I'm an experienced C++ graphics programmer but pretty dumb at Linux. Does anyone know of any sample code for the Pi to bring up a window in X with GLES running in it ?

Thanks

I think you may find it best to wait until the anholt drivers are released (rumours have it they should be around 1st quarter 2016)

Otherwise you will need to do a lot of work yourself working out color conversion or making sure the framebuffer is in correct BPP format.

I think you could check this thread viewtopic.php?f=63&t=74651&

[Pablo Walters]

I just made this work again for Raspberry PI 3 Model B

It is a nice simple way to get OpenGLES2.0 running inside
a window when running PIXEL on RPI 3 Model B

https://github.com/PaulHaeberli/pi-eglonx