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/*
* Copyright 2011-2020 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 "render/image_sky.h"
#include "util/util_image.h"
#include "util/util_logging.h"
#include "util/util_path.h"
#include "util/util_sky_model.h"
#include "util/util_task.h"
CCL_NAMESPACE_BEGIN
SkyLoader::SkyLoader(
float sun_elevation, int altitude, float air_density, float dust_density, float ozone_density)
: sun_elevation(sun_elevation),
altitude(altitude),
air_density(air_density),
dust_density(dust_density),
ozone_density(ozone_density)
{
}
SkyLoader::~SkyLoader(){};
bool SkyLoader::load_metadata(ImageMetaData &metadata)
{
metadata.width = 512;
metadata.height = 128;
metadata.channels = 3;
metadata.depth = 1;
metadata.type = IMAGE_DATA_TYPE_FLOAT4;
metadata.compress_as_srgb = false;
return true;
}
bool SkyLoader::load_pixels(const ImageMetaData &metadata,
void *pixels,
const size_t /*pixels_size*/,
const bool /*associate_alpha*/)
{
/* definitions */
int width = metadata.width;
int height = metadata.height;
float *pixel_data = (float *)pixels;
float altitude_f = (float)altitude;
/* precompute sky texture */
const int rows_per_task = divide_up(1024, width);
parallel_for(blocked_range<size_t>(0, height, rows_per_task),
[&](const blocked_range<size_t> &r) {
nishita_skymodel_precompute_texture(pixel_data,
metadata.channels,
r.begin(),
r.end(),
width,
height,
sun_elevation,
altitude_f,
air_density,
dust_density,
ozone_density);
});
return true;
}
string SkyLoader::name() const
{
return "sky_nishita";
}
bool SkyLoader::equals(const ImageLoader & /*other*/) const
{
return false;
}
CCL_NAMESPACE_END
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