diff options
Diffstat (limited to 'intern/cycles/blender')
-rw-r--r-- | intern/cycles/blender/blender_mesh.cpp | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/intern/cycles/blender/blender_mesh.cpp b/intern/cycles/blender/blender_mesh.cpp index 49407799fcd..9043cd81293 100644 --- a/intern/cycles/blender/blender_mesh.cpp +++ b/intern/cycles/blender/blender_mesh.cpp @@ -923,6 +923,73 @@ static void create_subd_mesh(Scene *scene, /* Sync */ +static BL::MeshSequenceCacheModifier object_mesh_cache_find(BL::Object &b_ob, BL::Scene b_scene) +{ + BL::Object::modifiers_iterator b_mod; + + for (b_ob.modifiers.begin(b_mod); b_mod != b_ob.modifiers.end(); ++b_mod) { + if (!b_mod->is_a(&RNA_MeshSequenceCacheModifier)) { + continue; + } + + BL::MeshSequenceCacheModifier mesh_cache = BL::MeshSequenceCacheModifier(*b_mod); + + if (MeshSequenceCacheModifier_has_velocity_get(&mesh_cache.ptr)) { + return mesh_cache; + } + } + + return BL::MeshSequenceCacheModifier(PointerRNA_NULL); +} + +static void sync_mesh_cached_velocities(BL::Object &b_ob, + BL::Scene b_scene, + Scene *scene, + Mesh *mesh) +{ + if (scene->need_motion() == Scene::MOTION_NONE) + return; + + BL::MeshSequenceCacheModifier b_mesh_cache = object_mesh_cache_find(b_ob, b_scene); + + if (!b_mesh_cache) { + return; + } + + /* Find or add attribute */ + float3 *P = &mesh->verts[0]; + Attribute *attr_mP = mesh->attributes.find(ATTR_STD_MOTION_VERTEX_POSITION); + + if (!attr_mP) { + attr_mP = mesh->attributes.add(ATTR_STD_MOTION_VERTEX_POSITION); + } + + if (!MeshSequenceCacheModifier_read_velocity_get(&b_mesh_cache.ptr)) { + return; + } + + const size_t numverts = mesh->verts.size(); + + if (b_mesh_cache.vertex_velocities.length() != numverts) { + return; + } + + /* Only export previous and next frame, we don't have any in between data. */ + float motion_times[2] = {-1.0f, 1.0f}; + for (int step = 0; step < 2; step++) { + const float relative_time = motion_times[step] * scene->motion_shutter_time() * 0.5f; + float3 *mP = attr_mP->data_float3() + step * numverts; + + BL::MeshSequenceCacheModifier::vertex_velocities_iterator vvi; + int i = 0; + + for (b_mesh_cache.vertex_velocities.begin(vvi); vvi != b_mesh_cache.vertex_velocities.end(); + ++vvi, ++i) { + mP[i] = P[i] + get_float3(vvi->velocity()) * relative_time; + } + } +} + static void sync_mesh_fluid_motion(BL::Object &b_ob, Scene *scene, Mesh *mesh) { if (scene->need_motion() == Scene::MOTION_NONE) @@ -1002,6 +1069,9 @@ void BlenderSync::sync_mesh(BL::Depsgraph b_depsgraph, } } + /* cached velocities (e.g. from alembic archive) */ + sync_mesh_cached_velocities(b_ob, b_depsgraph.scene(), scene, mesh); + /* mesh fluid motion mantaflow */ sync_mesh_fluid_motion(b_ob, scene, mesh); @@ -1023,6 +1093,12 @@ void BlenderSync::sync_mesh_motion(BL::Depsgraph b_depsgraph, return; } + /* Cached motion blur already exported. */ + BL::MeshSequenceCacheModifier mesh_cache = object_mesh_cache_find(b_ob, b_scene); + if (mesh_cache) { + return; + } + /* Skip if no vertices were exported. */ size_t numverts = mesh->verts.size(); if (numverts == 0) { |