Timeline addition: Display cached frames

This started off doing pointcache debugging but it's also very useful for users too.
Previously it was very hard to see the state of the system when you're working caches
such as physics point cache - is it baked? which frames are cached? is it out of date?

Now, for better feedback, cached frames are drawn for the active object at the bottom 
of the timeline - a semitransparent area shows the entire cache extents, and more 
solid blocks on top show the frames that are cached. Darker versions indicate it's 
using a disk cache.

It can be disabled in general in the timeline View -> Caches menu, or by each individual
system that can be shown.

There's still a bit to do on this, behaviour needs to be clarified still eg. deciding what
shows when it's out of date, or when it's been played back but not cached, etc. etc. 
Part of this is due to a lack of definition in the point cache system itself, so we should
try and clean up/clarify this behaviour and what it means to users, at the same time.

Also would be interested in extending this to other caches such as fluid cache, 
sequencer memory cache etc. in the future, too.

1 files changed, 2 insertions, 2 deletions

diff --git a/source/blender/editors/include/ED_screen.h b/source/blender/editors/include/ED_screen.h
index 4a4c546ec92..21a8fa70710 100644
--- a/source/blender/editors/include/ED_screen.h
+++ b/source/blender/editors/include/ED_screen.h
@@ -97,8 +97,8 @@ void	ED_screen_set_scene(struct bContext *C, struct Scene *scene);
 void	ED_screen_delete_scene(struct bContext *C, struct Scene *scene);
 void	ED_screen_set_subwinactive(struct wmWindow *win, struct wmEvent *event);
 void	ED_screen_exit(struct bContext *C, struct wmWindow *window, struct bScreen *screen);
-void	ED_screen_animation_timer(struct bContext *C, int redraws, int sync, int enable);
-void	ED_screen_animation_timer_update(struct bScreen *screen, int redraws);
+void	ED_screen_animation_timer(struct bContext *C, int redraws, int refresh, int sync, int enable);
+void	ED_screen_animation_timer_update(struct bScreen *screen, int redraws, int refresh);
 int		ED_screen_full_newspace(struct bContext *C, ScrArea *sa, int type);
 void	ED_screen_full_prevspace(struct bContext *C, ScrArea *sa);
 void	ED_screen_full_restore(struct bContext *C, ScrArea *sa);