💿🐜 Antkeeper source code
https://antkeeper.com
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75 lines
2.0 KiB
75 lines
2.0 KiB
/*
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* Copyright (C) 2023 Christopher J. Howard
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*
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* This file is part of Antkeeper source code.
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*
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* Antkeeper source code is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Antkeeper source code is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Antkeeper source code. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef ANTKEEPER_GL_CUBE_MAP_HPP
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#define ANTKEEPER_GL_CUBE_MAP_HPP
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#include <cstdint>
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namespace gl {
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/// Cube map layouts.
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enum class cube_map_layout: std::uint8_t
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{
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/// Unknown layout.
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unknown,
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/// Faces are stored consecutively in a single column.
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column,
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/// Faces are stored consecutively in a single row.
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row,
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/// Faces are stored in a vertical cross.
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vertical_cross,
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/// Faces are stored in a horizontal cross.
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horizontal_cross,
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/// Faces are stored in an equirectangular projection.
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equirectangular,
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/// Faces are stored in a spherical projection.
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spherical
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};
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/**
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* Infers the layout of a cube map from its dimensions.
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*
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* @param width Cube map width.
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* @param height Cube map height.
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*
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* @return Inferred cube map layout.
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*/
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[[nodiscard]] cube_map_layout infer_cube_map_layout(std::uint32_t width, std::uint32_t height) noexcept;
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/**
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* Infers the width of a cube map face from its dimensons and layout.
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*
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* @param width Cube map width.
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* @param height Cube map height.
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* @param layout Cube map layout.
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*
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* @return Inferred cube map face width.
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*/
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[[nodiscard]] std::uint32_t infer_cube_map_face_width(std::uint32_t width, std::uint32_t height, cube_map_layout layout) noexcept;
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} // namespace gl
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#endif // ANTKEEPER_GL_CUBE_MAP_HPP
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