That test case only works with drm display, so the build such as meson -Dwith_x11=yes -Dwith_wayland=no -Dwith_drm=no -Dwith_egl=no -Dwith_glx=no gets a failure when run ninja test. Just enable this test when drm is enabled.
Add test_overlay_position test to verify sink_1 input is overlayed onto sink_0 input at the appropriate position.
Test that vaapipostproc properly translates mouse events when cropping.
Add minimal unit test toolchain files and a simple vaapipostproc unit test.
