Mesh *BlenderSync::sync_mesh(BL::Depsgraph &b_depsgraph,
BL::Object &b_ob,
BL::Object &b_ob_instance,
bool object_updated,
bool show_self,
bool show_particles)
{
/* test if we can instance or if the object is modified */
BL::ID b_ob_data = b_ob.data();
BL::ID key = (BKE_object_is_modified(b_ob)) ? b_ob_instance : b_ob_data;
BL::Material material_override = view_layer.material_override;
/* find shader indices */
vector<Shader *> used_shaders;
BL::Object::material_slots_iterator slot;
for (b_ob.material_slots.begin(slot); slot != b_ob.material_slots.end(); ++slot) {
if (material_override) {
find_shader(material_override, used_shaders, scene->default_surface);
}
else {
BL::ID b_material(slot->material());
find_shader(b_material, used_shaders, scene->default_surface);
}
}
if (used_shaders.size() == 0) {
if (material_override)
find_shader(material_override, used_shaders, scene->default_surface);
else
used_shaders.push_back(scene->default_surface);
}
/* test if we need to sync */
int requested_geometry_flags = Mesh::GEOMETRY_NONE;
if (view_layer.use_surfaces) {
requested_geometry_flags |= Mesh::GEOMETRY_TRIANGLES;
}
if (view_layer.use_hair) {
requested_geometry_flags |= Mesh::GEOMETRY_CURVES;
}
Mesh *mesh;
if (!mesh_map.sync(&mesh, key)) {
/* if transform was applied to mesh, need full update */
if (object_updated && mesh->transform_applied)
;
/* test if shaders changed, these can be object level so mesh
* does not get tagged for recalc */
else if (mesh->used_shaders != used_shaders)
;
else if (requested_geometry_flags != mesh->geometry_flags)
;
else {
/* even if not tagged for recalc, we may need to sync anyway
* because the shader needs different mesh attributes */
bool attribute_recalc = false;
foreach (Shader *shader, mesh->used_shaders)
if (shader->need_update_mesh)
attribute_recalc = true;
if (!attribute_recalc)
return mesh;
}
}
/* ensure we only sync instanced meshes once */
if (mesh_synced.find(mesh) != mesh_synced.end())
return mesh;
progress.set_sync_status("Synchronizing object", b_ob.name());
mesh_synced.insert(mesh);
/* create derived mesh */
array<int> oldtriangles;
array<Mesh::SubdFace> oldsubd_faces;
array<int> oldsubd_face_corners;
oldtriangles.steal_data(mesh->triangles);
oldsubd_faces.steal_data(mesh->subd_faces);
oldsubd_face_corners.steal_data(mesh->subd_face_corners);
/* compares curve_keys rather than strands in order to handle quick hair
* adjustments in dynamic BVH - other methods could probably do this better*/
array<float3> oldcurve_keys;
array<float> oldcurve_radius;
oldcurve_keys.steal_data(mesh->curve_keys);
oldcurve_radius.steal_data(mesh->curve_radius);
mesh->clear();
mesh->used_shaders = used_shaders;
mesh->name = ustring(b_ob_data.name().c_str());
if (requested_geometry_flags != Mesh::GEOMETRY_NONE) {
/* Adaptive subdivision setup. Not for baking since that requires
* exact mapping to the Blender mesh. */
if (scene->bake_manager->get_baking()) {
mesh->subdivision_type = Mesh::SUBDIVISION_NONE;
}
else {
mesh->subdivision_type = object_subdivision_type(b_ob, preview, experimental);
}
/* For some reason, meshes do not need this... */
bool need_undeformed = mesh->need_attribute(scene, ATTR_STD_GENERATED);
BL::Mesh b_mesh = object_to_mesh(
b_data, b_ob, b_depsgraph, need_undeformed, mesh->subdivision_type);
if (b_mesh) {
/* Sync mesh itself. */
if (view_layer.use_surfaces && show_self) {
if (mesh->subdivision_type != Mesh::SUBDIVISION_NONE)
create_subd_mesh(scene, mesh, b_ob, b_mesh, used_shaders, dicing_rate, max_subdivisions);
else
create_mesh(scene, mesh, b_mesh, used_shaders, false);
create_mesh_volume_attributes(scene, b_ob, mesh, b_scene.frame_current());
}
/* Sync hair curves. */
if (view_layer.use_hair && show_particles &&
mesh->subdivision_type == Mesh::SUBDIVISION_NONE) {
sync_curves(mesh, b_mesh, b_ob, false);
}
free_object_to_mesh(b_data, b_ob, b_mesh);
}
}
mesh->geometry_flags = requested_geometry_flags;
/* fluid motion */
sync_mesh_fluid_motion(b_ob, scene, mesh);
/* tag update */
bool rebuild = (oldtriangles != mesh->triangles) || (oldsubd_faces != mesh->subd_faces) ||
(oldsubd_face_corners != mesh->subd_face_corners) ||
(oldcurve_keys != mesh->curve_keys) || (oldcurve_radius != mesh->curve_radius);
mesh->tag_update(scene, rebuild);
return mesh;
}
Mesh *BlenderSync::sync_mesh(BL::Object& b_ob,
bool object_updated,
bool hide_tris)
{
/* When viewport display is not needed during render we can force some
* caches to be releases from blender side in order to reduce peak memory
* footprint during synchronization process.
*/
const bool is_interface_locked = b_engine.render() &&
b_engine.render().use_lock_interface();
const bool can_free_caches = BlenderSession::headless || is_interface_locked;
/* test if we can instance or if the object is modified */
BL::ID b_ob_data = b_ob.data();
BL::ID key = (BKE_object_is_modified(b_ob))? b_ob: b_ob_data;
BL::Material material_override = render_layer.material_override;
/* find shader indices */
vector<uint> used_shaders;
BL::Object::material_slots_iterator slot;
for(b_ob.material_slots.begin(slot); slot != b_ob.material_slots.end(); ++slot) {
if(material_override) {
find_shader(material_override, used_shaders, scene->default_surface);
}
else {
BL::ID b_material(slot->material());
find_shader(b_material, used_shaders, scene->default_surface);
}
}
if(used_shaders.size() == 0) {
if(material_override)
find_shader(material_override, used_shaders, scene->default_surface);
else
used_shaders.push_back(scene->default_surface);
}
/* test if we need to sync */
int requested_geometry_flags = Mesh::GEOMETRY_NONE;
if(render_layer.use_surfaces) {
requested_geometry_flags |= Mesh::GEOMETRY_TRIANGLES;
}
if(render_layer.use_hair) {
requested_geometry_flags |= Mesh::GEOMETRY_CURVES;
}
Mesh *mesh;
if(!mesh_map.sync(&mesh, key)) {
/* if transform was applied to mesh, need full update */
if(object_updated && mesh->transform_applied);
/* test if shaders changed, these can be object level so mesh
* does not get tagged for recalc */
else if(mesh->used_shaders != used_shaders);
else if(requested_geometry_flags != mesh->geometry_flags);
else {
/* even if not tagged for recalc, we may need to sync anyway
* because the shader needs different mesh attributes */
bool attribute_recalc = false;
foreach(uint shader, mesh->used_shaders)
if(scene->shaders[shader]->need_update_attributes)
attribute_recalc = true;
if(!attribute_recalc)
return mesh;
}
}
/* ensure we only sync instanced meshes once */
if(mesh_synced.find(mesh) != mesh_synced.end())
return mesh;
mesh_synced.insert(mesh);
/* create derived mesh */
PointerRNA cmesh = RNA_pointer_get(&b_ob_data.ptr, "cycles");
vector<Mesh::Triangle> oldtriangle = mesh->triangles;
/* compares curve_keys rather than strands in order to handle quick hair
* adjustments in dynamic BVH - other methods could probably do this better*/
vector<float4> oldcurve_keys = mesh->curve_keys;
mesh->clear();
mesh->used_shaders = used_shaders;
mesh->name = ustring(b_ob_data.name().c_str());
if(requested_geometry_flags != Mesh::GEOMETRY_NONE) {
/* mesh objects does have special handle in the dependency graph,
* they're ensured to have properly updated.
*
* updating meshes here will end up having derived mesh referencing
* freed data from the blender side.
*/
if(preview && b_ob.type() != BL::Object::type_MESH)
b_ob.update_from_editmode();
bool need_undeformed = mesh->need_attribute(scene, ATTR_STD_GENERATED);
BL::Mesh b_mesh = object_to_mesh(b_data, b_ob, b_scene, true, !preview, need_undeformed);
if(b_mesh) {
if(render_layer.use_surfaces && !hide_tris) {
if(cmesh.data && experimental && RNA_boolean_get(&cmesh, "use_subdivision"))
create_subd_mesh(scene, mesh, b_mesh, &cmesh, used_shaders);
else
create_mesh(scene, mesh, b_mesh, used_shaders);
create_mesh_volume_attributes(scene, b_ob, mesh, b_scene.frame_current());
}
if(render_layer.use_hair)
sync_curves(mesh, b_mesh, b_ob, false);
if(can_free_caches) {
b_ob.cache_release();
}
/* free derived mesh */
b_data.meshes.remove(b_mesh);
}
}
mesh->geometry_flags = requested_geometry_flags;
/* displacement method */
if(cmesh.data) {
const int method = get_enum(cmesh, "displacement_method");
if(method == 0 || !experimental)
mesh->displacement_method = Mesh::DISPLACE_BUMP;
else if(method == 1)
mesh->displacement_method = Mesh::DISPLACE_TRUE;
else
mesh->displacement_method = Mesh::DISPLACE_BOTH;
}
/* tag update */
bool rebuild = false;
if(oldtriangle.size() != mesh->triangles.size())
rebuild = true;
else if(oldtriangle.size()) {
if(memcmp(&oldtriangle[0], &mesh->triangles[0], sizeof(Mesh::Triangle)*oldtriangle.size()) != 0)
rebuild = true;
}
if(oldcurve_keys.size() != mesh->curve_keys.size())
rebuild = true;
else if(oldcurve_keys.size()) {
if(memcmp(&oldcurve_keys[0], &mesh->curve_keys[0], sizeof(float4)*oldcurve_keys.size()) != 0)
rebuild = true;
}
mesh->tag_update(scene, rebuild);
return mesh;
}
void BlenderSync::sync_mesh_motion(BL::Depsgraph &b_depsgraph,
BL::Object &b_ob,
Object *object,
float motion_time)
{
/* ensure we only sync instanced meshes once */
Mesh *mesh = object->mesh;
if (mesh_motion_synced.find(mesh) != mesh_motion_synced.end())
return;
mesh_motion_synced.insert(mesh);
/* ensure we only motion sync meshes that also had mesh synced, to avoid
* unnecessary work and to ensure that its attributes were clear */
if (mesh_synced.find(mesh) == mesh_synced.end())
return;
/* Find time matching motion step required by mesh. */
int motion_step = mesh->motion_step(motion_time);
if (motion_step < 0) {
return;
}
/* skip empty meshes */
const size_t numverts = mesh->verts.size();
const size_t numkeys = mesh->curve_keys.size();
if (!numverts && !numkeys)
return;
/* skip objects without deforming modifiers. this is not totally reliable,
* would need a more extensive check to see which objects are animated */
BL::Mesh b_mesh(PointerRNA_NULL);
/* fluid motion is exported immediate with mesh, skip here */
BL::DomainFluidSettings b_fluid_domain = object_fluid_domain_find(b_ob);
if (b_fluid_domain)
return;
if (ccl::BKE_object_is_deform_modified(b_ob, b_scene, preview)) {
/* get derived mesh */
b_mesh = object_to_mesh(b_data, b_ob, b_depsgraph, false, Mesh::SUBDIVISION_NONE);
}
if (!b_mesh) {
/* if we have no motion blur on this frame, but on other frames, copy */
if (numverts) {
/* triangles */
Attribute *attr_mP = mesh->attributes.find(ATTR_STD_MOTION_VERTEX_POSITION);
if (attr_mP) {
Attribute *attr_mN = mesh->attributes.find(ATTR_STD_MOTION_VERTEX_NORMAL);
Attribute *attr_N = mesh->attributes.find(ATTR_STD_VERTEX_NORMAL);
float3 *P = &mesh->verts[0];
float3 *N = (attr_N) ? attr_N->data_float3() : NULL;
memcpy(attr_mP->data_float3() + motion_step * numverts, P, sizeof(float3) * numverts);
if (attr_mN)
memcpy(attr_mN->data_float3() + motion_step * numverts, N, sizeof(float3) * numverts);
}
}
if (numkeys) {
/* curves */
Attribute *attr_mP = mesh->curve_attributes.find(ATTR_STD_MOTION_VERTEX_POSITION);
if (attr_mP) {
float3 *keys = &mesh->curve_keys[0];
memcpy(attr_mP->data_float3() + motion_step * numkeys, keys, sizeof(float3) * numkeys);
}
}
return;
}
/* TODO(sergey): Perform preliminary check for number of verticies. */
if (numverts) {
/* Find attributes. */
Attribute *attr_mP = mesh->attributes.find(ATTR_STD_MOTION_VERTEX_POSITION);
Attribute *attr_mN = mesh->attributes.find(ATTR_STD_MOTION_VERTEX_NORMAL);
Attribute *attr_N = mesh->attributes.find(ATTR_STD_VERTEX_NORMAL);
bool new_attribute = false;
/* Add new attributes if they don't exist already. */
if (!attr_mP) {
attr_mP = mesh->attributes.add(ATTR_STD_MOTION_VERTEX_POSITION);
if (attr_N)
attr_mN = mesh->attributes.add(ATTR_STD_MOTION_VERTEX_NORMAL);
new_attribute = true;
}
/* Load vertex data from mesh. */
float3 *mP = attr_mP->data_float3() + motion_step * numverts;
float3 *mN = (attr_mN) ? attr_mN->data_float3() + motion_step * numverts : NULL;
/* NOTE: We don't copy more that existing amount of vertices to prevent
* possible memory corruption.
*/
BL::Mesh::vertices_iterator v;
int i = 0;
for (b_mesh.vertices.begin(v); v != b_mesh.vertices.end() && i < numverts; ++v, ++i) {
mP[i] = get_float3(v->co());
if (mN)
mN[i] = get_float3(v->normal());
}
if (new_attribute) {
/* In case of new attribute, we verify if there really was any motion. */
if (b_mesh.vertices.length() != numverts ||
memcmp(mP, &mesh->verts[0], sizeof(float3) * numverts) == 0) {
/* no motion, remove attributes again */
if (b_mesh.vertices.length() != numverts) {
VLOG(1) << "Topology differs, disabling motion blur for object " << b_ob.name();
}
else {
VLOG(1) << "No actual deformation motion for object " << b_ob.name();
}
mesh->attributes.remove(ATTR_STD_MOTION_VERTEX_POSITION);
if (attr_mN)
mesh->attributes.remove(ATTR_STD_MOTION_VERTEX_NORMAL);
}
else if (motion_step > 0) {
VLOG(1) << "Filling deformation motion for object " << b_ob.name();
/* motion, fill up previous steps that we might have skipped because
* they had no motion, but we need them anyway now */
float3 *P = &mesh->verts[0];
float3 *N = (attr_N) ? attr_N->data_float3() : NULL;
for (int step = 0; step < motion_step; step++) {
memcpy(attr_mP->data_float3() + step * numverts, P, sizeof(float3) * numverts);
if (attr_mN)
memcpy(attr_mN->data_float3() + step * numverts, N, sizeof(float3) * numverts);
}
}
}
else {
if (b_mesh.vertices.length() != numverts) {
VLOG(1) << "Topology differs, discarding motion blur for object " << b_ob.name()
<< " at time " << motion_step;
memcpy(mP, &mesh->verts[0], sizeof(float3) * numverts);
if (mN != NULL) {
memcpy(mN, attr_N->data_float3(), sizeof(float3) * numverts);
}
}
}
}
/* hair motion */
if (numkeys)
sync_curves(mesh, b_mesh, b_ob, true, motion_step);
/* free derived mesh */
free_object_to_mesh(b_data, b_ob, b_mesh);
}
Mesh *BlenderSync::sync_mesh(BL::Object b_ob, bool object_updated, bool hide_tris)
{
/* test if we can instance or if the object is modified */
BL::ID b_ob_data = b_ob.data();
BL::ID key = (BKE_object_is_modified(b_ob))? b_ob: b_ob_data;
BL::Material material_override = render_layer.material_override;
/* find shader indices */
vector<uint> used_shaders;
BL::Object::material_slots_iterator slot;
for(b_ob.material_slots.begin(slot); slot != b_ob.material_slots.end(); ++slot) {
if(material_override)
find_shader(material_override, used_shaders, scene->default_surface);
else
find_shader(slot->material(), used_shaders, scene->default_surface);
}
if(used_shaders.size() == 0) {
if(material_override)
find_shader(material_override, used_shaders, scene->default_surface);
else
used_shaders.push_back(scene->default_surface);
}
/* test if we need to sync */
Mesh *mesh;
if(!mesh_map.sync(&mesh, key)) {
/* if transform was applied to mesh, need full update */
if(object_updated && mesh->transform_applied);
/* test if shaders changed, these can be object level so mesh
* does not get tagged for recalc */
else if(mesh->used_shaders != used_shaders);
else {
/* even if not tagged for recalc, we may need to sync anyway
* because the shader needs different mesh attributes */
bool attribute_recalc = false;
foreach(uint shader, mesh->used_shaders)
if(scene->shaders[shader]->need_update_attributes)
attribute_recalc = true;
if(!attribute_recalc)
return mesh;
}
}
/* ensure we only sync instanced meshes once */
if(mesh_synced.find(mesh) != mesh_synced.end())
return mesh;
mesh_synced.insert(mesh);
/* create derived mesh */
PointerRNA cmesh = RNA_pointer_get(&b_ob_data.ptr, "cycles");
vector<Mesh::Triangle> oldtriangle = mesh->triangles;
/* compares curve_keys rather than strands in order to handle quick hair
* adjustsments in dynamic BVH - other methods could probably do this better*/
vector<float4> oldcurve_keys = mesh->curve_keys;
mesh->clear();
mesh->used_shaders = used_shaders;
mesh->name = ustring(b_ob_data.name().c_str());
if(render_layer.use_surfaces || render_layer.use_hair) {
if(preview)
b_ob.update_from_editmode();
bool need_undeformed = mesh->need_attribute(scene, ATTR_STD_GENERATED);
BL::Mesh b_mesh = object_to_mesh(b_data, b_ob, b_scene, true, !preview, need_undeformed);
if(b_mesh) {
if(render_layer.use_surfaces && !hide_tris) {
if(cmesh.data && experimental && RNA_boolean_get(&cmesh, "use_subdivision"))
create_subd_mesh(scene, mesh, b_mesh, &cmesh, used_shaders);
else
create_mesh(scene, mesh, b_mesh, used_shaders);
create_mesh_volume_attributes(scene, b_ob, mesh);
}
if(render_layer.use_hair)
sync_curves(mesh, b_mesh, b_ob, false);
/* free derived mesh */
b_data.meshes.remove(b_mesh);
}
}
/* displacement method */
if(cmesh.data) {
const int method = RNA_enum_get(&cmesh, "displacement_method");
if(method == 0 || !experimental)
mesh->displacement_method = Mesh::DISPLACE_BUMP;
else if(method == 1)
mesh->displacement_method = Mesh::DISPLACE_TRUE;
else
mesh->displacement_method = Mesh::DISPLACE_BOTH;
}
/* tag update */
bool rebuild = false;
if(oldtriangle.size() != mesh->triangles.size())
rebuild = true;
else if(oldtriangle.size()) {
if(memcmp(&oldtriangle[0], &mesh->triangles[0], sizeof(Mesh::Triangle)*oldtriangle.size()) != 0)
rebuild = true;
}
if(oldcurve_keys.size() != mesh->curve_keys.size())
rebuild = true;
else if(oldcurve_keys.size()) {
if(memcmp(&oldcurve_keys[0], &mesh->curve_keys[0], sizeof(float4)*oldcurve_keys.size()) != 0)
rebuild = true;
}
mesh->tag_update(scene, rebuild);
return mesh;
}
