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/*
* Copyright 2011-2021 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.
*/
#pragma once
#include <ostream>
#include "util/types.h"
CCL_NAMESPACE_BEGIN
struct TileSize {
TileSize() = default;
inline TileSize(int width, int height, int num_samples)
: width(width), height(height), num_samples(num_samples)
{
}
inline bool operator==(const TileSize &other) const
{
return width == other.width && height == other.height && num_samples == other.num_samples;
}
inline bool operator!=(const TileSize &other) const
{
return !(*this == other);
}
int width = 0, height = 0;
int num_samples = 0;
};
std::ostream &operator<<(std::ostream &os, const TileSize &tile_size);
/* Calculate tile size which is best suitable for rendering image of a given size with given number
* of active path states.
* Will attempt to provide best guess to keep path tracing threads of a device as localized as
* possible, and have as many threads active for every tile as possible. */
TileSize tile_calculate_best_size(const bool accel_rt,
const int2 &image_size,
const int num_samples,
const int max_num_path_states,
const float scrambling_distance);
CCL_NAMESPACE_END
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