lib: Don't use dumb buffers for YCbCr

We don't do the "black != zero" clearing for dumb buffers, so let's not
use them for YCbCr framebuffers.

v2: Use igt_format_is_yuv()

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
1 file changed