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/*
* Copyright 2011-2013 Blender Foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "render/curves.h"
#include "render/hair.h"
#include "render/mesh.h"
#include "render/object.h"
#include "render/volume.h"
#include "blender/blender_sync.h"
#include "blender/blender_util.h"
#include "util/util_foreach.h"
CCL_NAMESPACE_BEGIN
static Geometry::Type determine_geom_type(BL::Object &b_ob, bool use_particle_hair)
{
if (b_ob.type() == BL::Object::type_HAIR || use_particle_hair) {
return Geometry::HAIR;
}
if (b_ob.type() == BL::Object::type_VOLUME || object_fluid_gas_domain_find(b_ob)) {
return Geometry::VOLUME;
}
return Geometry::MESH;
}
Geometry *BlenderSync::sync_geometry(BL::Depsgraph &b_depsgraph,
BL::Object &b_ob,
BL::Object &b_ob_instance,
bool object_updated,
bool use_particle_hair)
{
/* Test if we can instance or if the object is modified. */
BL::ID b_ob_data = b_ob.data();
BL::ID b_key_id = (BKE_object_is_modified(b_ob)) ? b_ob_instance : b_ob_data;
GeometryKey key(b_key_id.ptr.data, use_particle_hair);
BL::Material material_override = view_layer.material_override;
Shader *default_shader = (b_ob.type() == BL::Object::type_VOLUME) ? scene->default_volume :
scene->default_surface;
Geometry::Type geom_type = determine_geom_type(b_ob, use_particle_hair);
/* 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, default_shader);
}
else {
BL::ID b_material(slot->material());
find_shader(b_material, used_shaders, default_shader);
}
}
if (used_shaders.size() == 0) {
if (material_override)
find_shader(material_override, used_shaders, default_shader);
else
used_shaders.push_back(default_shader);
}
/* Test if we need to sync. */
Geometry *geom = geometry_map.find(key);
bool sync = true;
if (geom == NULL) {
/* Add new geometry if it did not exist yet. */
if (geom_type == Geometry::HAIR) {
geom = scene->create_node<Hair>();
}
else if (geom_type == Geometry::VOLUME) {
geom = scene->create_node<Volume>();
}
else {
geom = scene->create_node<Mesh>();
}
geometry_map.add(key, geom);
}
else {
/* Test if we need to update existing geometry. */
sync = geometry_map.update(geom, b_key_id);
}
if (!sync) {
/* If transform was applied to geometry, need full update. */
if (object_updated && geom->transform_applied) {
;
}
/* Test if shaders changed, these can be object level so geometry
* does not get tagged for recalc. */
else if (geom->used_shaders != used_shaders) {
;
}
else {
/* Even if not tagged for recalc, we may need to sync anyway
* because the shader needs different geometry attributes. */
bool attribute_recalc = false;
foreach (Shader *shader, geom->used_shaders) {
if (shader->need_update_geometry) {
attribute_recalc = true;
}
}
if (!attribute_recalc) {
return geom;
}
}
}
/* Ensure we only sync instanced geometry once. */
if (geometry_synced.find(geom) != geometry_synced.end()) {
return geom;
}
progress.set_sync_status("Synchronizing object", b_ob.name());
geometry_synced.insert(geom);
geom->name = ustring(b_ob_data.name().c_str());
if (geom_type == Geometry::HAIR) {
Hair *hair = static_cast<Hair *>(geom);
sync_hair(b_depsgraph, b_ob, hair, used_shaders);
}
else if (geom_type == Geometry::VOLUME) {
Volume *volume = static_cast<Volume *>(geom);
sync_volume(b_ob, volume, used_shaders);
}
else {
Mesh *mesh = static_cast<Mesh *>(geom);
sync_mesh(b_depsgraph, b_ob, mesh, used_shaders);
}
return geom;
}
void BlenderSync::sync_geometry_motion(BL::Depsgraph &b_depsgraph,
BL::Object &b_ob,
Object *object,
float motion_time,
bool use_particle_hair)
{
/* Ensure we only sync instanced geometry once. */
Geometry *geom = object->geometry;
if (geometry_motion_synced.find(geom) != geometry_motion_synced.end())
return;
geometry_motion_synced.insert(geom);
/* Ensure we only motion sync geometry that also had geometry synced, to avoid
* unnecessary work and to ensure that its attributes were clear. */
if (geometry_synced.find(geom) == geometry_synced.end())
return;
/* Find time matching motion step required by geometry. */
int motion_step = geom->motion_step(motion_time);
if (motion_step < 0) {
return;
}
if (b_ob.type() == BL::Object::type_HAIR || use_particle_hair) {
Hair *hair = static_cast<Hair *>(geom);
sync_hair_motion(b_depsgraph, b_ob, hair, motion_step);
}
else if (b_ob.type() == BL::Object::type_VOLUME || object_fluid_gas_domain_find(b_ob)) {
/* No volume motion blur support yet. */
}
else {
Mesh *mesh = static_cast<Mesh *>(geom);
sync_mesh_motion(b_depsgraph, b_ob, mesh, motion_step);
}
}
CCL_NAMESPACE_END
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