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Maarten Lankhorst authored
This will allow support for NV12 in the future, where igt_get_cairo_ctx will return a RGB image to draw with, which will be converted in igt_put_cairo_ctx so tests don't have to add special support for NV12. This is the same as cairo_destroy + checking for errors, but not all tests use this correctly so it's better to have a single handler for it. Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
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