diff options
Diffstat (limited to 'intern/cycles/blender/blender_util.h')
-rw-r--r-- | intern/cycles/blender/blender_util.h | 41 |
1 files changed, 21 insertions, 20 deletions
diff --git a/intern/cycles/blender/blender_util.h b/intern/cycles/blender/blender_util.h index c4c45035b5a..c418b19a637 100644 --- a/intern/cycles/blender/blender_util.h +++ b/intern/cycles/blender/blender_util.h @@ -484,33 +484,34 @@ static inline void mesh_texture_space(BL::Mesh& b_mesh, loc = loc*size - make_float3(0.5f, 0.5f, 0.5f); } -/* object used for motion blur */ -static inline bool object_use_motion(BL::Object& b_parent, BL::Object& b_ob) +/* Object motion steps, returns 0 if no motion blur needed. */ +static inline uint object_motion_steps(BL::Object& b_parent, BL::Object& b_ob) { + /* Get motion enabled and steps from object itself. */ PointerRNA cobject = RNA_pointer_get(&b_ob.ptr, "cycles"); bool use_motion = get_boolean(cobject, "use_motion_blur"); - /* If motion blur is enabled for the object we also check - * whether it's enabled for the parent object as well. - * - * This way we can control motion blur from the dupligroup - * duplicator much easier. - */ - if(use_motion && b_parent.ptr.data != b_ob.ptr.data) { + if(!use_motion) { + return 0; + } + + uint steps = max(1, get_int(cobject, "motion_steps")); + + /* Also check parent object, so motion blur and steps can be + * controlled by dupligroup duplicator for linked groups. */ + if(b_parent.ptr.data != b_ob.ptr.data) { PointerRNA parent_cobject = RNA_pointer_get(&b_parent.ptr, "cycles"); use_motion &= get_boolean(parent_cobject, "use_motion_blur"); - } - return use_motion; -} -/* object motion steps */ -static inline uint object_motion_steps(BL::Object& b_ob) -{ - PointerRNA cobject = RNA_pointer_get(&b_ob.ptr, "cycles"); - uint steps = get_int(cobject, "motion_steps"); + if(!use_motion) { + return 0; + } + + steps = max(steps, get_int(parent_cobject, "motion_steps")); + } - /* use uneven number of steps so we get one keyframe at the current frame, - * and ue 2^(steps - 1) so objects with more/fewer steps still have samples - * at the same times, to avoid sampling at many different times */ + /* Use uneven number of steps so we get one keyframe at the current frame, + * and use 2^(steps - 1) so objects with more/fewer steps still have samples + * at the same times, to avoid sampling at many different times. */ return (2 << (steps - 1)) + 1; } |