diff options
Diffstat (limited to 'intern/cycles/blender/blender_particles.cpp')
-rw-r--r-- | intern/cycles/blender/blender_particles.cpp | 194 |
1 files changed, 41 insertions, 153 deletions
diff --git a/intern/cycles/blender/blender_particles.cpp b/intern/cycles/blender/blender_particles.cpp index c4c6d2f79a3..769cd9f532d 100644 --- a/intern/cycles/blender/blender_particles.cpp +++ b/intern/cycles/blender/blender_particles.cpp @@ -17,6 +17,7 @@ */ #include "mesh.h" +#include "object.h" #include "particles.h" #include "blender_sync.h" @@ -28,170 +29,57 @@ CCL_NAMESPACE_BEGIN /* Utilities */ - -/* Particles Sync */ - -bool BlenderSync::psys_need_update(BL::ParticleSystem b_psys) -{ - /* Particle data is only needed for - * a) Billboard render mode if object's own material uses particle info - * b) object/group render mode if any dupli object's material uses particle info - * - * Note: Meshes have to be synced at this point! - */ - bool need_update = false; - - switch (b_psys.settings().render_type()) { - /* XXX not implemented yet! - * billboards/strands would become part of the mesh data (?), - * so the mesh attributes would store whether particle info is required. - */ - #if 0 - case BL::ParticleSettings::render_type_BILLBOARD: - case BL::ParticleSettings::render_type_PATH: { /* for strand rendering */ - BL::ID key = (BKE_object_is_modified(b_ob))? b_ob: b_ob.data(); - Mesh *mesh = mesh_map.find(key); - if(mesh) { - need_update |= mesh->need_attribute(scene, ATTR_STD_PARTICLE) && mesh->need_update; - } - break; - } - #endif - - case BL::ParticleSettings::render_type_OBJECT: { - BL::Object b_dupli_ob = b_psys.settings().dupli_object(); - if(b_dupli_ob) { - BL::ID key = (BKE_object_is_modified(b_dupli_ob))? b_dupli_ob: b_dupli_ob.data(); - Mesh *mesh = mesh_map.find(key); - if(mesh) { - need_update |= mesh->need_attribute(scene, ATTR_STD_PARTICLE) && mesh->need_update; - } - } - break; - } - - case BL::ParticleSettings::render_type_GROUP: { - BL::Group b_dupli_group = b_psys.settings().dupli_group(); - if(b_dupli_group) { - BL::Group::objects_iterator b_gob; - for (b_dupli_group.objects.begin(b_gob); b_gob != b_dupli_group.objects.end(); ++b_gob) { - BL::ID key = (BKE_object_is_modified(*b_gob))? *b_gob: b_gob->data(); - Mesh *mesh = mesh_map.find(key); - if(mesh) { - need_update |= mesh->need_attribute(scene, ATTR_STD_PARTICLE) && mesh->need_update; - } - } - } - break; - } - - default: - /* avoid compiler warning */ - break; - } - - return need_update; -} - -static bool use_particle_system(BL::ParticleSystem b_psys) -{ - /* only use duplicator particles? disabled particle info for - * halo and billboard to reduce particle count. - * Probably not necessary since particles don't contain a huge amount - * of data compared to other textures. - */ - #if 0 - int render_type = b_psys->settings().render_type(); - return (render_type == BL::ParticleSettings::render_type_OBJECT - || render_type == BL::ParticleSettings::render_type_GROUP); - #endif - - return true; -} - -static bool use_particle(BL::Particle b_pa, bool preview, bool show_unborn, bool use_dead) -{ - return b_pa.is_exist() && (!preview || b_pa.is_visible()) && - (b_pa.alive_state() != BL::Particle::alive_state_UNBORN || show_unborn) && - (b_pa.alive_state() != BL::Particle::alive_state_DEAD || use_dead); -} - -static int psys_count_particles(BL::ParticleSystem b_psys, bool preview) +bool BlenderSync::sync_dupli_particle(BL::Object b_ob, BL::DupliObject b_dup, Object *object) { - BL::ParticleSystem::particles_iterator b_pa; - bool show_unborn = b_psys.settings().show_unborn(); - bool use_dead = b_psys.settings().use_dead(); - int num = 0; + /* test if this dupli was generated from a particle sytem */ + BL::ParticleSystem b_psys = b_dup.particle_system(); + if(!b_psys) + return false; - for(b_psys.particles.begin(b_pa); b_pa != b_psys.particles.end(); ++b_pa) - if(use_particle(*b_pa, preview, show_unborn, use_dead)) - ++num; + /* test if we need particle data */ + if(!object->mesh->need_attribute(scene, ATTR_STD_PARTICLE)) + return false; - return num; -} + /* don't handle child particles yet */ + BL::Array<int, OBJECT_PERSISTENT_ID_SIZE> persistent_id = b_dup.persistent_id(); -int BlenderSync::object_count_particles(BL::Object b_ob) -{ - BL::Object::particle_systems_iterator b_psys; - int num = 0; + if(persistent_id[0] >= b_psys.particles.length()) + return false; - for(b_ob.particle_systems.begin(b_psys); b_psys != b_ob.particle_systems.end(); ++b_psys) - if(use_particle_system(*b_psys)) - num += psys_count_particles(*b_psys, preview); + /* find particle system */ + ParticleSystemKey key(b_ob, persistent_id); + ParticleSystem *psys; - return num; -} + bool first_use = !particle_system_map.is_used(key); + bool need_update = particle_system_map.sync(&psys, b_ob, b_dup.object(), key); -void BlenderSync::sync_particles(BL::Object b_ob, BL::ParticleSystem b_psys) -{ - /* depending on settings the psys may not even be rendered */ - if(!use_particle_system(b_psys)) - return; - - /* key to lookup particle system */ - ParticleSystemKey key(b_ob, b_psys); - ParticleSystem *psys; - - /* test if we need to sync */ - bool object_updated = false; - - if(particle_system_map.sync(&psys, b_ob, b_ob, key)) - object_updated = true; - - bool need_update = psys_need_update(b_psys); - - if(object_updated || need_update) { - bool show_unborn = b_psys.settings().show_unborn(); - bool use_dead = b_psys.settings().use_dead(); + /* no update needed? */ + if(!need_update && !object->mesh->need_update && !scene->object_manager->need_update) + return true; - int num = psys_count_particles(b_psys, preview); + /* first time used in this sync loop? clear and tag update */ + if(first_use) { psys->particles.clear(); - psys->particles.reserve(num); - - BL::ParticleSystem::particles_iterator b_pa; - int index = 0; - - for(b_psys.particles.begin(b_pa); b_pa != b_psys.particles.end(); ++b_pa) { - if(use_particle(*b_pa, preview, show_unborn, use_dead)) { - Particle pa; - - pa.index = index; - pa.age = b_scene.frame_current() - b_pa->birth_time(); - pa.lifetime = b_pa->lifetime(); - pa.location = get_float3(b_pa->location()); - pa.rotation = get_float4(b_pa->rotation()); - pa.size = b_pa->size(); - pa.velocity = get_float3(b_pa->velocity()); - pa.angular_velocity = get_float3(b_pa->angular_velocity()); - - psys->particles.push_back(pa); - } - - ++index; - } - psys->tag_update(scene); } + + /* add particle */ + BL::Particle b_pa = b_psys.particles[persistent_id[0]]; + Particle pa; + + pa.index = persistent_id[0]; + pa.age = b_scene.frame_current() - b_pa.birth_time(); + pa.lifetime = b_pa.lifetime(); + pa.location = get_float3(b_pa.location()); + pa.rotation = get_float4(b_pa.rotation()); + pa.size = b_pa.size(); + pa.velocity = get_float3(b_pa.velocity()); + pa.angular_velocity = get_float3(b_pa.angular_velocity()); + + psys->particles.push_back(pa); + + /* return that this object has particle data */ + return true; } CCL_NAMESPACE_END |