Cycles: support for motion vector and UV passes.

Most of the changes are related to adding support for motion data throughout
the code. There's some code for actual camera/object motion blur raytracing
but it's unfinished (it badly slows down the raytracing kernel even when the
option is turned off), so that code it disabled still.

Motion vector export from Blender tries to avoid computing derived meshes
when the mesh does not have a deforming modifier, and it also won't store
motion vectors for every vertex if only the object or camera is moving.

2 files changed, 14 insertions, 1 deletions

diff --git a/source/blender/makesrna/intern/rna_object_api.c b/source/blender/makesrna/intern/rna_object_api.c
index d09dedb4f4c..cb0f1d307aa 100644
--- a/source/blender/makesrna/intern/rna_object_api.c
+++ b/source/blender/makesrna/intern/rna_object_api.c
@@ -476,6 +476,11 @@ int rna_Object_is_modified(Object *ob, Scene *scene, int settings)
 	return object_is_modified(scene, ob) & settings;
 }
 
+int rna_Object_is_deform_modified(Object *ob, Scene *scene, int settings)
+{
+	return object_is_deform_modified(scene, ob) & settings;
+}
+
 #ifndef NDEBUG
 void rna_Object_dm_info(struct Object *ob, int type, char *result)
 {
@@ -644,6 +649,14 @@ void RNA_api_object(StructRNA *srna)
 	parm = RNA_def_boolean(func, "result", 0, "", "Object visibility");
 	RNA_def_function_return(func, parm);
 
+	func = RNA_def_function(srna, "is_deform_modified", "rna_Object_is_deform_modified");
+	RNA_def_function_ui_description(func, "Determine if this object is modified by a deformation from the base mesh data");
+	parm = RNA_def_pointer(func, "scene", "Scene", "", "");
+	RNA_def_property_flag(parm, PROP_REQUIRED|PROP_NEVER_NULL);
+	parm = RNA_def_enum(func, "settings", mesh_type_items, 0, "", "Modifier settings to apply");
+	RNA_def_property_flag(parm, PROP_REQUIRED);
+	parm = RNA_def_boolean(func, "result", 0, "", "Object visibility");
+	RNA_def_function_return(func, parm);
 
 #ifndef NDEBUG
 	/* mesh */
diff --git a/source/blender/makesrna/intern/rna_scene_api.c b/source/blender/makesrna/intern/rna_scene_api.c
index 08ed7625a01..c92a29cec3c 100644
--- a/source/blender/makesrna/intern/rna_scene_api.c
+++ b/source/blender/makesrna/intern/rna_scene_api.c
@@ -50,7 +50,7 @@
 
 
 
-static void rna_Scene_frame_set(Scene *scene, int frame, float subframe)
+void rna_Scene_frame_set(Scene *scene, int frame, float subframe)
 {
 	scene->r.cfra = frame;
 	scene->r.subframe = subframe;