gl-renderer: add support of WL_SHM_FORMAT_YUYV

This patch allow gl-renderer to accept WL_SHM_FORMAT_YUYV buffers.
This is the pixel format supported by most of the USB webcams.

v2:
 - fix hsub Vs vsub inversion

Signed-off-by: Vincent Abriou <vincent.abriou@st.com>
Reviewed-by: Eric Engestrom <eric.engestrom@imgtec.com>
Reviewed-by: Daniel Stone <daniels@collabora.com>
1 file changed