121 lines
3.2 KiB
C++
121 lines
3.2 KiB
C++
/*
|
|
* 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 "device.h"
|
|
#include "particles.h"
|
|
#include "scene.h"
|
|
|
|
#include "util_foreach.h"
|
|
#include "util_map.h"
|
|
#include "util_progress.h"
|
|
#include "util_vector.h"
|
|
|
|
CCL_NAMESPACE_BEGIN
|
|
|
|
/* Particle System */
|
|
|
|
ParticleSystem::ParticleSystem()
|
|
{
|
|
}
|
|
|
|
ParticleSystem::~ParticleSystem()
|
|
{
|
|
}
|
|
|
|
void ParticleSystem::tag_update(Scene *scene)
|
|
{
|
|
scene->particle_system_manager->need_update = true;
|
|
}
|
|
|
|
/* Particle System Manager */
|
|
|
|
ParticleSystemManager::ParticleSystemManager()
|
|
{
|
|
need_update = true;
|
|
}
|
|
|
|
ParticleSystemManager::~ParticleSystemManager()
|
|
{
|
|
}
|
|
|
|
void ParticleSystemManager::device_update_particles(Device *device, DeviceScene *dscene, Scene *scene, Progress& progress)
|
|
{
|
|
/* count particles.
|
|
* adds one dummy particle at the beginning to avoid invalid lookups,
|
|
* in case a shader uses particle info without actual particle data. */
|
|
int num_particles = 1;
|
|
foreach(ParticleSystem *psys, scene->particle_systems)
|
|
num_particles += psys->particles.size();
|
|
|
|
float4 *particles = dscene->particles.resize(PARTICLE_SIZE*num_particles);
|
|
|
|
/* dummy particle */
|
|
particles[0] = make_float4(0.0f, 0.0f, 0.0f, 0.0f);
|
|
particles[1] = make_float4(0.0f, 0.0f, 0.0f, 0.0f);
|
|
particles[2] = make_float4(0.0f, 0.0f, 0.0f, 0.0f);
|
|
particles[3] = make_float4(0.0f, 0.0f, 0.0f, 0.0f);
|
|
particles[4] = make_float4(0.0f, 0.0f, 0.0f, 0.0f);
|
|
|
|
int i = 1;
|
|
foreach(ParticleSystem *psys, scene->particle_systems) {
|
|
foreach(Particle &pa, psys->particles) {
|
|
/* pack in texture */
|
|
int offset = i*PARTICLE_SIZE;
|
|
|
|
particles[offset] = make_float4(pa.index, pa.age, pa.lifetime, pa.size);
|
|
particles[offset+1] = pa.rotation;
|
|
particles[offset+2] = make_float4(pa.location.x, pa.location.y, pa.location.z, pa.velocity.x);
|
|
particles[offset+3] = make_float4(pa.velocity.y, pa.velocity.z, pa.angular_velocity.x, pa.angular_velocity.y);
|
|
particles[offset+4] = make_float4(pa.angular_velocity.z, 0.0f, 0.0f, 0.0f);
|
|
|
|
i++;
|
|
|
|
if(progress.get_cancel()) return;
|
|
}
|
|
}
|
|
|
|
device->tex_alloc("__particles", dscene->particles);
|
|
}
|
|
|
|
void ParticleSystemManager::device_update(Device *device, DeviceScene *dscene, Scene *scene, Progress& progress)
|
|
{
|
|
if(!need_update)
|
|
return;
|
|
|
|
device_free(device, dscene);
|
|
|
|
progress.set_status("Updating Particle Systems", "Copying Particles to device");
|
|
device_update_particles(device, dscene, scene, progress);
|
|
|
|
if(progress.get_cancel()) return;
|
|
|
|
need_update = false;
|
|
}
|
|
|
|
void ParticleSystemManager::device_free(Device *device, DeviceScene *dscene)
|
|
{
|
|
device->tex_free(dscene->particles);
|
|
dscene->particles.clear();
|
|
}
|
|
|
|
void ParticleSystemManager::tag_update(Scene *scene)
|
|
{
|
|
need_update = true;
|
|
}
|
|
|
|
CCL_NAMESPACE_END
|
|
|