d7d40745fa
* Split render/ into scene/ and session/. The scene/ folder now contains the scene and its nodes. The session/ folder contains the render session and associated data structures like drivers and render buffers. * Move top level kernel headers into new folders kernel/camera/, kernel/film/, kernel/light/, kernel/sample/, kernel/util/ * Move integrator related kernel headers into kernel/integrator/ * Move OSL shaders from kernel/shaders/ to kernel/osl/shaders/ For patches and branches, git merge and rebase should be able to detect the renames and move over code to the right file.
150 lines
3.9 KiB
C++
150 lines
3.9 KiB
C++
/*
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* Copyright 2011-2013 Blender Foundation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "scene/particles.h"
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#include "device/device.h"
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#include "scene/scene.h"
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#include "scene/stats.h"
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#include "util/util_foreach.h"
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#include "util/util_hash.h"
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#include "util/util_logging.h"
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#include "util/util_map.h"
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#include "util/util_progress.h"
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#include "util/util_vector.h"
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CCL_NAMESPACE_BEGIN
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/* Particle System */
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NODE_DEFINE(ParticleSystem)
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{
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NodeType *type = NodeType::add("particle_system", create);
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return type;
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}
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ParticleSystem::ParticleSystem() : Node(get_node_type())
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{
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}
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ParticleSystem::~ParticleSystem()
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{
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}
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void ParticleSystem::tag_update(Scene *scene)
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{
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scene->particle_system_manager->tag_update(scene);
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}
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/* Particle System Manager */
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ParticleSystemManager::ParticleSystemManager()
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{
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need_update_ = true;
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}
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ParticleSystemManager::~ParticleSystemManager()
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{
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}
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void ParticleSystemManager::device_update_particles(Device *,
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DeviceScene *dscene,
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Scene *scene,
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Progress &progress)
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{
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/* count particles.
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* adds one dummy particle at the beginning to avoid invalid lookups,
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* in case a shader uses particle info without actual particle data. */
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int num_particles = 1;
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for (size_t j = 0; j < scene->particle_systems.size(); j++)
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num_particles += scene->particle_systems[j]->particles.size();
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KernelParticle *kparticles = dscene->particles.alloc(num_particles);
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/* dummy particle */
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memset(kparticles, 0, sizeof(KernelParticle));
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int i = 1;
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for (size_t j = 0; j < scene->particle_systems.size(); j++) {
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ParticleSystem *psys = scene->particle_systems[j];
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for (size_t k = 0; k < psys->particles.size(); k++) {
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/* pack in texture */
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Particle &pa = psys->particles[k];
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kparticles[i].index = pa.index;
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kparticles[i].age = pa.age;
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kparticles[i].lifetime = pa.lifetime;
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kparticles[i].size = pa.size;
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kparticles[i].rotation = pa.rotation;
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kparticles[i].location = float3_to_float4(pa.location);
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kparticles[i].velocity = float3_to_float4(pa.velocity);
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kparticles[i].angular_velocity = float3_to_float4(pa.angular_velocity);
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i++;
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if (progress.get_cancel())
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return;
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}
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}
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dscene->particles.copy_to_device();
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}
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void ParticleSystemManager::device_update(Device *device,
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DeviceScene *dscene,
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Scene *scene,
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Progress &progress)
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{
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if (!need_update())
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return;
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scoped_callback_timer timer([scene](double time) {
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if (scene->update_stats) {
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scene->update_stats->particles.times.add_entry({"device_update", time});
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}
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});
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VLOG(1) << "Total " << scene->particle_systems.size() << " particle systems.";
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device_free(device, dscene);
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progress.set_status("Updating Particle Systems", "Copying Particles to device");
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device_update_particles(device, dscene, scene, progress);
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if (progress.get_cancel())
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return;
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need_update_ = false;
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}
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void ParticleSystemManager::device_free(Device *, DeviceScene *dscene)
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{
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dscene->particles.free();
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}
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void ParticleSystemManager::tag_update(Scene * /*scene*/)
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{
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need_update_ = true;
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}
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bool ParticleSystemManager::need_update() const
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{
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return need_update_;
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}
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CCL_NAMESPACE_END
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