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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 "device.h"
#include "integrator.h"
#include "scene.h"
#include "sobol.h"
CCL_NAMESPACE_BEGIN
Integrator::Integrator()
{
minbounce = 2;
maxbounce = 7;
no_caustics = false;
blur_caustics = 0.0f;
need_update = true;
}
Integrator::~Integrator()
{
}
void Integrator::device_update(Device *device, DeviceScene *dscene)
{
if(!need_update)
return;
device_free(device, dscene);
KernelIntegrator *kintegrator = &dscene->data.integrator;
/* integrator parameters */
kintegrator->minbounce = minbounce + 1;
kintegrator->maxbounce = maxbounce + 1;
kintegrator->no_caustics = no_caustics;
kintegrator->blur_caustics = blur_caustics;
/* sobol directions table */
int dimensions = PRNG_BASE_NUM + (maxbounce + 2)*PRNG_BOUNCE_NUM;
uint *directions = dscene->sobol_directions.resize(SOBOL_BITS*dimensions);
sobol_generate_direction_vectors((uint(*)[SOBOL_BITS])directions, dimensions);
device->tex_alloc("__sobol_directions", dscene->sobol_directions);
need_update = false;
}
void Integrator::device_free(Device *device, DeviceScene *dscene)
{
device->tex_free(dscene->sobol_directions);
dscene->sobol_directions.clear();
}
bool Integrator::modified(const Integrator& integrator)
{
return !(minbounce == integrator.minbounce &&
maxbounce == integrator.maxbounce &&
no_caustics == integrator.no_caustics &&
blur_caustics == integrator.blur_caustics);
}
void Integrator::tag_update(Scene *scene)
{
need_update = true;
}
CCL_NAMESPACE_END
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