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blender/intern/cycles/render/scene.cpp
Sergey Sharybin b763c34e80 Cycles: Cleanup, silence strict compiler warning 
There is one legit place in the code where memcpy was used as an
optimization trick. Was needed for older version of GCC, but now
it should be re-evaluated and checked if it still helps to have
that trick.

In other places it's somewhat lazy programming to zero out all
object members. That is absolutely unsafe, at the moment when
less trivial class is used as a member in that object things
will break.

Other cases were using memcpy into an object which comes from
an external library. We don't control that object, and we can
not guarantee it will always be safe for such memory tricks
and debugging bugs caused by such low level access is far fun.

Ideally we need to use more proper C++, but needs to be done with
big care, including benchmarks of each change, For now do
annoying but simple cast to void*.
2018-06-11 13:02:10 +02:00

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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 <stdlib.h>
#include "render/background.h"
#include "render/bake.h"
#include "render/camera.h"
#include "render/curves.h"
#include "device/device.h"
#include "render/film.h"
#include "render/integrator.h"
#include "render/light.h"
#include "render/mesh.h"
#include "render/object.h"
#include "render/osl.h"
#include "render/particles.h"
#include "render/scene.h"
#include "render/shader.h"
#include "render/svm.h"
#include "render/tables.h"
#include "util/util_foreach.h"
#include "util/util_guarded_allocator.h"
#include "util/util_logging.h"
#include "util/util_progress.h"
CCL_NAMESPACE_BEGIN
DeviceScene::DeviceScene(Device *device)
: bvh_nodes(device, "__bvh_nodes", MEM_TEXTURE),
bvh_leaf_nodes(device, "__bvh_leaf_nodes", MEM_TEXTURE),
object_node(device, "__object_node", MEM_TEXTURE),
prim_tri_index(device, "__prim_tri_index", MEM_TEXTURE),
prim_tri_verts(device, "__prim_tri_verts", MEM_TEXTURE),
prim_type(device, "__prim_type", MEM_TEXTURE),
prim_visibility(device, "__prim_visibility", MEM_TEXTURE),
prim_index(device, "__prim_index", MEM_TEXTURE),
prim_object(device, "__prim_object", MEM_TEXTURE),
prim_time(device, "__prim_time", MEM_TEXTURE),
tri_shader(device, "__tri_shader", MEM_TEXTURE),
tri_vnormal(device, "__tri_vnormal", MEM_TEXTURE),
tri_vindex(device, "__tri_vindex", MEM_TEXTURE),
tri_patch(device, "__tri_patch", MEM_TEXTURE),
tri_patch_uv(device, "__tri_patch_uv", MEM_TEXTURE),
curves(device, "__curves", MEM_TEXTURE),
curve_keys(device, "__curve_keys", MEM_TEXTURE),
patches(device, "__patches", MEM_TEXTURE),
objects(device, "__objects", MEM_TEXTURE),
object_motion_pass(device, "__object_motion_pass", MEM_TEXTURE),
object_motion(device, "__object_motion", MEM_TEXTURE),
object_flag(device, "__object_flag", MEM_TEXTURE),
camera_motion(device, "__camera_motion", MEM_TEXTURE),
attributes_map(device, "__attributes_map", MEM_TEXTURE),
attributes_float(device, "__attributes_float", MEM_TEXTURE),
attributes_float3(device, "__attributes_float3", MEM_TEXTURE),
attributes_uchar4(device, "__attributes_uchar4", MEM_TEXTURE),
light_distribution(device, "__light_distribution", MEM_TEXTURE),
lights(device, "__lights", MEM_TEXTURE),
light_background_marginal_cdf(device, "__light_background_marginal_cdf", MEM_TEXTURE),
light_background_conditional_cdf(device, "__light_background_conditional_cdf", MEM_TEXTURE),
particles(device, "__particles", MEM_TEXTURE),
svm_nodes(device, "__svm_nodes", MEM_TEXTURE),
shaders(device, "__shaders", MEM_TEXTURE),
lookup_table(device, "__lookup_table", MEM_TEXTURE),
sobol_directions(device, "__sobol_directions", MEM_TEXTURE),
ies_lights(device, "__ies", MEM_TEXTURE)
{
memset((void*)&data, 0, sizeof(data));
}
Scene::Scene(const SceneParams& params_, Device *device)
: device(device), dscene(device), params(params_)
{
memset((void *)&dscene.data, 0, sizeof(dscene.data));
camera = new Camera();
dicing_camera = new Camera();
lookup_tables = new LookupTables();
film = new Film();
background = new Background();
light_manager = new LightManager();
mesh_manager = new MeshManager();
object_manager = new ObjectManager();
integrator = new Integrator();
image_manager = new ImageManager(device->info);
particle_system_manager = new ParticleSystemManager();
curve_system_manager = new CurveSystemManager();
bake_manager = new BakeManager();
/* OSL only works on the CPU */
if(device->info.has_osl)
shader_manager = ShaderManager::create(this, params.shadingsystem);
else
shader_manager = ShaderManager::create(this, SHADINGSYSTEM_SVM);
}
Scene::~Scene()
{
free_memory(true);
}
void Scene::free_memory(bool final)
{
foreach(Shader *s, shaders)
delete s;
foreach(Mesh *m, meshes)
delete m;
foreach(Object *o, objects)
delete o;
foreach(Light *l, lights)
delete l;
foreach(ParticleSystem *p, particle_systems)
delete p;
shaders.clear();
meshes.clear();
objects.clear();
lights.clear();
particle_systems.clear();
if(device) {
camera->device_free(device, &dscene, this);
film->device_free(device, &dscene, this);
background->device_free(device, &dscene);
integrator->device_free(device, &dscene);
object_manager->device_free(device, &dscene);
mesh_manager->device_free(device, &dscene);
shader_manager->device_free(device, &dscene, this);
light_manager->device_free(device, &dscene);
particle_system_manager->device_free(device, &dscene);
curve_system_manager->device_free(device, &dscene);
bake_manager->device_free(device, &dscene);
if(!params.persistent_data || final)
image_manager->device_free(device);
else
image_manager->device_free_builtin(device);
lookup_tables->device_free(device, &dscene);
}
if(final) {
delete lookup_tables;
delete camera;
delete dicing_camera;
delete film;
delete background;
delete integrator;
delete object_manager;
delete mesh_manager;
delete shader_manager;
delete light_manager;
delete particle_system_manager;
delete curve_system_manager;
delete image_manager;
delete bake_manager;
}
}
void Scene::device_update(Device *device_, Progress& progress)
{
if(!device)
device = device_;
bool print_stats = need_data_update();
/* The order of updates is important, because there's dependencies between
* the different managers, using data computed by previous managers.
*
* - Image manager uploads images used by shaders.
* - Camera may be used for adaptive subdivision.
* - Displacement shader must have all shader data available.
* - Light manager needs lookup tables and final mesh data to compute emission CDF.
* - Film needs light manager to run for use_light_visibility
* - Lookup tables are done a second time to handle film tables
*/
progress.set_status("Updating Shaders");
shader_manager->device_update(device, &dscene, this, progress);
if(progress.get_cancel() || device->have_error()) return;
progress.set_status("Updating Background");
background->device_update(device, &dscene, this);
if(progress.get_cancel() || device->have_error()) return;
progress.set_status("Updating Camera");
camera->device_update(device, &dscene, this);
if(progress.get_cancel() || device->have_error()) return;
mesh_manager->device_update_preprocess(device, this, progress);
if(progress.get_cancel() || device->have_error()) return;
progress.set_status("Updating Objects");
object_manager->device_update(device, &dscene, this, progress);
if(progress.get_cancel() || device->have_error()) return;
progress.set_status("Updating Particle Systems");
particle_system_manager->device_update(device, &dscene, this, progress);
if(progress.get_cancel() || device->have_error()) return;
progress.set_status("Updating Meshes");
mesh_manager->device_update(device, &dscene, this, progress);
if(progress.get_cancel() || device->have_error()) return;
progress.set_status("Updating Objects Flags");
object_manager->device_update_flags(device, &dscene, this, progress);
if(progress.get_cancel() || device->have_error()) return;
progress.set_status("Updating Images");
image_manager->device_update(device, this, progress);
if(progress.get_cancel() || device->have_error()) return;
progress.set_status("Updating Camera Volume");
camera->device_update_volume(device, &dscene, this);
if(progress.get_cancel() || device->have_error()) return;
progress.set_status("Updating Hair Systems");
curve_system_manager->device_update(device, &dscene, this, progress);
if(progress.get_cancel() || device->have_error()) return;
progress.set_status("Updating Lookup Tables");
lookup_tables->device_update(device, &dscene);
if(progress.get_cancel() || device->have_error()) return;
progress.set_status("Updating Lights");
light_manager->device_update(device, &dscene, this, progress);
if(progress.get_cancel() || device->have_error()) return;
progress.set_status("Updating Integrator");
integrator->device_update(device, &dscene, this);
if(progress.get_cancel() || device->have_error()) return;
progress.set_status("Updating Film");
film->device_update(device, &dscene, this);
if(progress.get_cancel() || device->have_error()) return;
progress.set_status("Updating Lookup Tables");
lookup_tables->device_update(device, &dscene);
if(progress.get_cancel() || device->have_error()) return;
progress.set_status("Updating Baking");
bake_manager->device_update(device, &dscene, this, progress);
if(progress.get_cancel() || device->have_error()) return;
if(device->have_error() == false) {
progress.set_status("Updating Device", "Writing constant memory");
device->const_copy_to("__data", &dscene.data, sizeof(dscene.data));
}
if(print_stats) {
size_t mem_used = util_guarded_get_mem_used();
size_t mem_peak = util_guarded_get_mem_peak();
VLOG(1) << "System memory statistics after full device sync:\n"
<< " Usage: " << string_human_readable_number(mem_used)
<< " (" << string_human_readable_size(mem_used) << ")\n"
<< " Peak: " << string_human_readable_number(mem_peak)
<< " (" << string_human_readable_size(mem_peak) << ")";
}
}
Scene::MotionType Scene::need_motion()
{
if(integrator->motion_blur)
return MOTION_BLUR;
else if(Pass::contains(film->passes, PASS_MOTION))
return MOTION_PASS;
else
return MOTION_NONE;
}
float Scene::motion_shutter_time()
{
if(need_motion() == Scene::MOTION_PASS)
return 2.0f;
else
return camera->shuttertime;
}
bool Scene::need_global_attribute(AttributeStandard std)
{
if(std == ATTR_STD_UV)
return Pass::contains(film->passes, PASS_UV);
else if(std == ATTR_STD_MOTION_VERTEX_POSITION)
return need_motion() != MOTION_NONE;
else if(std == ATTR_STD_MOTION_VERTEX_NORMAL)
return need_motion() == MOTION_BLUR;
return false;
}
void Scene::need_global_attributes(AttributeRequestSet& attributes)
{
for(int std = ATTR_STD_NONE; std < ATTR_STD_NUM; std++)
if(need_global_attribute((AttributeStandard)std))
attributes.add((AttributeStandard)std);
}
bool Scene::need_update()
{
return (need_reset() || film->need_update);
}
bool Scene::need_data_update()
{
return (background->need_update
|| image_manager->need_update
|| object_manager->need_update
|| mesh_manager->need_update
|| light_manager->need_update
|| lookup_tables->need_update
|| integrator->need_update
|| shader_manager->need_update
|| particle_system_manager->need_update
|| curve_system_manager->need_update
|| bake_manager->need_update
|| film->need_update);
}
bool Scene::need_reset()
{
return need_data_update() || camera->need_update;
}
void Scene::reset()
{
shader_manager->reset(this);
shader_manager->add_default(this);
/* ensure all objects are updated */
camera->tag_update();
dicing_camera->tag_update();
film->tag_update(this);
background->tag_update(this);
integrator->tag_update(this);
object_manager->tag_update(this);
mesh_manager->tag_update(this);
light_manager->tag_update(this);
particle_system_manager->tag_update(this);
curve_system_manager->tag_update(this);
}
void Scene::device_free()
{
free_memory(false);
}
CCL_NAMESPACE_END
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