Partial cleanup of timing system, with some guidance from Joshua:

* Fractional frames support has been changed to use a new var, scene->r.subframe. 
This is a 0.0-1.0 float representing a subframe interval, used in generating a final float 
frame number to evaluate animation system etc.
* Changed frame_to_float() and some instances of bsystem_time() into a convenience function:
float BKE_curframe(scene) which retrieves the floating point current frame, after subframe
and frame length corrections.
* Removed blur_offs and field_offs globals. These are now stored in render, used to 
generate a scene->r.subframe before render database processing.

1 files changed, 2 insertions, 0 deletions

diff --git a/source/blender/blenkernel/BKE_scene.h b/source/blender/blenkernel/BKE_scene.h
index 090979b33e9..9966aa11be3 100644
--- a/source/blender/blenkernel/BKE_scene.h
+++ b/source/blender/blenkernel/BKE_scene.h
@@ -80,6 +80,8 @@ void scene_select_base(struct Scene *sce, struct Base *selbase);
 /* checks for cycle, returns 1 if it's all OK */
 int scene_check_setscene(struct Scene *sce);
 
+float BKE_curframe(struct Scene *scene);
+
 void scene_update_tagged(struct Scene *sce);
 void scene_update_for_newframe(struct Scene *sce, unsigned int lay);