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blender/intern/cycles/render/film.cpp
Brecht Van Lommel 1d8c798188 Cycles: support for motion vector and UV passes. 
Most of the changes are related to adding support for motion data throughout
the code. There's some code for actual camera/object motion blur raytracing
but it's unfinished (it badly slows down the raytracing kernel even when the
option is turned off), so that code it disabled still.

Motion vector export from Blender tries to avoid computing derived meshes
when the mesh does not have a deforming modifier, and it also won't store
motion vectors for every vertex if only the object or camera is moving.
2012-04-30 12:49:26 +00:00

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/*
* Copyright 2011, Blender Foundation.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include "camera.h"
#include "device.h"
#include "film.h"
#include "integrator.h"
#include "scene.h"
#include "util_algorithm.h"
#include "util_foreach.h"
CCL_NAMESPACE_BEGIN
/* Pass */
static bool compare_pass_order(const Pass& a, const Pass& b)
{
if(a.components == b.components)
return (a.type < b.type);
return (a.components > b.components);
}
void Pass::add(PassType type, vector<Pass>& passes)
{
foreach(Pass& existing_pass, passes)
if(existing_pass.type == type)
return;
Pass pass;
pass.type = type;
pass.filter = true;
pass.exposure = false;
pass.divide_type = PASS_NONE;
switch(type) {
case PASS_NONE:
pass.components = 0;
break;
case PASS_COMBINED:
pass.components = 4;
pass.exposure = true;
break;
case PASS_DEPTH:
pass.components = 1;
pass.filter = false;
break;
case PASS_NORMAL:
pass.components = 4;
break;
case PASS_UV:
pass.components = 4;
break;
case PASS_MOTION:
pass.components = 4;
pass.divide_type = PASS_MOTION_WEIGHT;
break;
case PASS_MOTION_WEIGHT:
pass.components = 1;
break;
case PASS_OBJECT_ID:
pass.components = 1;
pass.filter = false;
break;
case PASS_MATERIAL_ID:
pass.components = 1;
pass.filter = false;
break;
case PASS_DIFFUSE_COLOR:
pass.components = 4;
break;
case PASS_GLOSSY_COLOR:
pass.components = 4;
break;
case PASS_TRANSMISSION_COLOR:
pass.components = 4;
break;
case PASS_DIFFUSE_INDIRECT:
pass.components = 4;
pass.exposure = true;
pass.divide_type = PASS_DIFFUSE_COLOR;
break;
case PASS_GLOSSY_INDIRECT:
pass.components = 4;
pass.exposure = true;
pass.divide_type = PASS_GLOSSY_COLOR;
break;
case PASS_TRANSMISSION_INDIRECT:
pass.components = 4;
pass.exposure = true;
pass.divide_type = PASS_TRANSMISSION_COLOR;
break;
case PASS_DIFFUSE_DIRECT:
pass.components = 4;
pass.exposure = true;
pass.divide_type = PASS_DIFFUSE_COLOR;
break;
case PASS_GLOSSY_DIRECT:
pass.components = 4;
pass.exposure = true;
pass.divide_type = PASS_GLOSSY_COLOR;
break;
case PASS_TRANSMISSION_DIRECT:
pass.components = 4;
pass.exposure = true;
pass.divide_type = PASS_TRANSMISSION_COLOR;
break;
case PASS_EMISSION:
pass.components = 4;
pass.exposure = true;
break;
case PASS_BACKGROUND:
pass.components = 4;
pass.exposure = true;
break;
case PASS_AO:
pass.components = 4;
break;
case PASS_SHADOW:
pass.components = 4;
pass.exposure = false;
break;
}
passes.push_back(pass);
/* order from by components, to ensure alignment so passes with size 4
come first and then passes with size 1 */
sort(passes.begin(), passes.end(), compare_pass_order);
if(pass.divide_type != PASS_NONE)
Pass::add(pass.divide_type, passes);
}
bool Pass::equals(const vector<Pass>& A, const vector<Pass>& B)
{
if(A.size() != B.size())
return false;
for(int i = 0; i < A.size(); i++)
if(A[i].type != B[i].type)
return false;
return true;
}
bool Pass::contains(const vector<Pass>& passes, PassType type)
{
foreach(const Pass& pass, passes)
if(pass.type == type)
return true;
return false;
}
/* Film */
Film::Film()
{
exposure = 0.8f;
Pass::add(PASS_COMBINED, passes);
need_update = true;
}
Film::~Film()
{
}
void Film::device_update(Device *device, DeviceScene *dscene)
{
if(!need_update)
return;
KernelFilm *kfilm = &dscene->data.film;
/* update __data */
kfilm->exposure = exposure;
kfilm->pass_flag = 0;
kfilm->pass_stride = 0;
kfilm->use_light_pass = 0;
foreach(Pass& pass, passes) {
kfilm->pass_flag |= pass.type;
switch(pass.type) {
case PASS_COMBINED:
kfilm->pass_combined = kfilm->pass_stride;
break;
case PASS_DEPTH:
kfilm->pass_depth = kfilm->pass_stride;
break;
case PASS_NORMAL:
kfilm->pass_normal = kfilm->pass_stride;
break;
case PASS_UV:
kfilm->pass_uv = kfilm->pass_stride;
break;
case PASS_MOTION:
kfilm->pass_motion = kfilm->pass_stride;
break;
case PASS_MOTION_WEIGHT:
kfilm->pass_motion_weight = kfilm->pass_stride;
break;
case PASS_OBJECT_ID:
kfilm->pass_object_id = kfilm->pass_stride;
break;
case PASS_MATERIAL_ID:
kfilm->pass_material_id = kfilm->pass_stride;
break;
case PASS_DIFFUSE_COLOR:
kfilm->pass_diffuse_color = kfilm->pass_stride;
kfilm->use_light_pass = 1;
break;
case PASS_GLOSSY_COLOR:
kfilm->pass_glossy_color = kfilm->pass_stride;
kfilm->use_light_pass = 1;
break;
case PASS_TRANSMISSION_COLOR:
kfilm->pass_transmission_color = kfilm->pass_stride;
kfilm->use_light_pass = 1;
break;
case PASS_DIFFUSE_INDIRECT:
kfilm->pass_diffuse_indirect = kfilm->pass_stride;
kfilm->use_light_pass = 1;
break;
case PASS_GLOSSY_INDIRECT:
kfilm->pass_glossy_indirect = kfilm->pass_stride;
kfilm->use_light_pass = 1;
break;
case PASS_TRANSMISSION_INDIRECT:
kfilm->pass_transmission_indirect = kfilm->pass_stride;
kfilm->use_light_pass = 1;
break;
case PASS_DIFFUSE_DIRECT:
kfilm->pass_diffuse_direct = kfilm->pass_stride;
kfilm->use_light_pass = 1;
break;
case PASS_GLOSSY_DIRECT:
kfilm->pass_glossy_direct = kfilm->pass_stride;
kfilm->use_light_pass = 1;
break;
case PASS_TRANSMISSION_DIRECT:
kfilm->pass_transmission_direct = kfilm->pass_stride;
kfilm->use_light_pass = 1;
break;
case PASS_EMISSION:
kfilm->pass_emission = kfilm->pass_stride;
kfilm->use_light_pass = 1;
break;
case PASS_BACKGROUND:
kfilm->pass_background = kfilm->pass_stride;
kfilm->use_light_pass = 1;
case PASS_AO:
kfilm->pass_ao = kfilm->pass_stride;
kfilm->use_light_pass = 1;
case PASS_SHADOW:
kfilm->pass_shadow = kfilm->pass_stride;
kfilm->use_light_pass = 1;
case PASS_NONE:
break;
}
kfilm->pass_stride += pass.components;
}
kfilm->pass_stride = align_up(kfilm->pass_stride, 4);
need_update = false;
}
void Film::device_free(Device *device, DeviceScene *dscene)
{
}
bool Film::modified(const Film& film)
{
return !(exposure == film.exposure
&& Pass::equals(passes, film.passes));
}
void Film::tag_update(Scene *scene)
{
scene->integrator->tag_update(scene);
need_update = true;
}
CCL_NAMESPACE_END
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