[MastaG]

So for the record anything that uses GLES for rendering does not work on both kodi-gbm and kodi-wayland.
Cores that do not use GLES (e.g) Snes9x work fine on both kodi-gbm and kodi-wayland.

But for gbm two changes are required for the ARM mali driver:
disable the DMA renderer in: xbmc/windowing/gbm/WinSystemGbmGLESContext.cpp

Code:

/* RETRO::CRPProcessInfoGbm::RegisterRendererFactory(new RETRO::CRendererFactoryDMA); */

disable gbm_bo_map in: xbmc/windowing/gbm/WinSystemGbmGLESContext.cpp

Code:

/* #if defined(HAS_GBM_BO_MAP)
  CGBMBufferObject::Register();
#endif */

Now if somebody can point me to a fix for cores utilizing GLES (Mupen64, Parallel64, Flycast etc..) then that would make me happy