libstage: set initial dirty state via stage_conf_t

Particularly in cached stages it's often needed to start out dirty, by
copying from the stage_conf_t passed to stage_new() it still defaults
to the common clean/0 case but eliminates the need for a separate
stage_dirty() call in the caching case.

2 files changed, 2 insertions, 0 deletions

diff --git a/src/stage.c b/src/stage.c
index bffd67f..4d18486 100644
--- a/src/stage.c
+++ b/src/stage.c
@@ -108,6 +108,7 @@ stage_t * stage_new(const stage_conf_t *conf, const stage_ops_t *ops, void *obje
 	stage->alpha = conf->alpha;
 	stage->active = conf->active;
 	stage->locked = conf->locked;
+	stage->dirty = conf->dirty;
 
 	return stage;
 }
diff --git a/src/stage.h b/src/stage.h
index 20a03d8..d1c8e69 100644
--- a/src/stage.h
+++ b/src/stage.h
@@ -39,6 +39,7 @@ typedef struct stage_conf_t {
 	float			alpha;
 	unsigned		active:1;
 	unsigned		locked:1;
+	unsigned		dirty:1;
 } stage_conf_t;
 
 stage_t * stage_new(const stage_conf_t *conf, const stage_ops_t *ops, void *object);