Differential D12367 Diff 41308 intern/cycles/integrator/tile.h

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intern/cycles/integrator/tile.h

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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/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 int2 &image_size,
				const int num_samples,
				const int max_num_path_states);

				CCL_NAMESPACE_END