marco@rockpi-4b:~/dev/glmark2/glmark2$ glmark2
** GLX does not support GLX_EXT_swap_control or GLX_MESA_swap_control!
** Failed to set swap interval. Results may be bounded above by refresh rate.
=======================================================
    glmark2 2020.04
=======================================================
    OpenGL Information
    GL_VENDOR:     VMware, Inc.
    GL_RENDERER:   llvmpipe (LLVM 7.0, 128 bits)
    GL_VERSION:    3.1 Mesa 18.3.6
=======================================================
** GLX does not support GLX_EXT_swap_control or GLX_MESA_swap_control!
** Failed to set swap interval. Results may be bounded above by refresh rate.
[build] use-vbo=false: FPS: 59 FrameTime: 16.949 ms
** GLX does not support GLX_EXT_swap_control or GLX_MESA_swap_control!
** Failed to set swap interval. Results may be bounded above by refresh rate.
[build] use-vbo=true: FPS: 65 FrameTime: 15.385 ms
** GLX does not support GLX_EXT_swap_control or GLX_MESA_swap_control!
** Failed to set swap interval. Results may be bounded above by refresh rate.
[texture] texture-filter=nearest: FPS: 67 FrameTime: 14.925 ms
** GLX does not support GLX_EXT_swap_control or GLX_MESA_swap_control!
** Failed to set swap interval. Results may be bounded above by refresh rate.
[texture] texture-filter=linear: FPS: 75 FrameTime: 13.333 ms
** GLX does not support GLX_EXT_swap_control or GLX_MESA_swap_control!
** Failed to set swap interval. Results may be bounded above by refresh rate.
[texture] texture-filter=mipmap: FPS: 66 FrameTime: 15.152 ms
** GLX does not support GLX_EXT_swap_control or GLX_MESA_swap_control!
** Failed to set swap interval. Results may be bounded above by refresh rate.
[shading] shading=gouraud: FPS: 30 FrameTime: 33.333 ms
** GLX does not support GLX_EXT_swap_control or GLX_MESA_swap_control!
** Failed to set swap interval. Results may be bounded above by refresh rate.
[shading] shading=blinn-phong-inf: FPS: 30 FrameTime: 33.333 ms
** GLX does not support GLX_EXT_swap_control or GLX_MESA_swap_control!
** Failed to set swap interval. Results may be bounded above by refresh rate.
[shading] shading=phong: FPS: 29 FrameTime: 34.483 ms
** GLX does not support GLX_EXT_swap_control or GLX_MESA_swap_control!
** Failed to set swap interval. Results may be bounded above by refresh rate.
[shading] shading=cel: FPS: 29 FrameTime: 34.483 ms
** GLX does not support GLX_EXT_swap_control or GLX_MESA_swap_control!
** Failed to set swap interval. Results may be bounded above by refresh rate.