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* tools: fix r1780 cycle prerequisites and add SDL GLX-pbuffer shimArthur Hanson Rasmusson18 hours
- cycle-r1780.sh: load vfio modules one per modprobe (the multi-module form was silently treating the extra names as parameters and never loading mdev); auto-detect the vgpu mdev type and prefer the 2 GiB type used by the campaign. - sdl_cap.c: gate capture-file creation to processes that can actually read GL pixels (a child was truncating the capture), and log the capture pid/pointers. - gz_pbuf.c: LD_PRELOAD shim that gives an SDL2 GL client a GLX pbuffer context on the guest's NVIDIA X server (the proven gl_frames path), with SDL_GL_GetDrawableSize/SwapWindow interception.