lib/igt_kms: Handle changing rotation property correctly

The rotation property sucks because it may affect whether
drmModeSetPlane succeeds or not. Add some code to handle
this.

First try to set rotation directly, if that succeeds we
return immediately. If it fails we disable the plane, set
the rotation property and run the rest of the code.

This will hopefully make legacy rotation work in more cases when
scaling is not supported.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>

1 files changed, 1 insertions, 0 deletions

diff --git a/lib/igt_kms.h b/lib/igt_kms.h
index e1883bf1..2a480bf3 100644
--- a/lib/igt_kms.h
+++ b/lib/igt_kms.h
@@ -349,6 +349,7 @@ struct igt_display {
 	igt_pipe_t *pipes;
 	bool has_cursor_plane;
 	bool is_atomic;
+	bool first_commit;
 };
 
 void igt_display_init(igt_display_t *display, int drm_fd);