💿🐜 Antkeeper source code
https://antkeeper.com
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92 lines
3.2 KiB
92 lines
3.2 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_TEXTURE_CUBE_HPP
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#define ANTKEEPER_GL_TEXTURE_CUBE_HPP
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#include <engine/gl/texture.hpp>
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#include <engine/gl/cube-map-layout.hpp>
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namespace gl {
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/**
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* A cube texture which can be uploaded to shaders via shader inputs.
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*/
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class texture_cube: public texture
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{
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public:
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/**
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* Infers the layout of a cube map from its aspect ratio.
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*
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* @param w Width of the cube map, in pixels.
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* @param h Height of the cube map, in pixels.
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*
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* @return Inferred cube map layout.
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*/
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[[nodiscard]] static cube_map_layout infer_cube_map_layout(std::uint16_t w, std::uint16_t h) noexcept;
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/**
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* Infers the edge length of a cube map face from its layout and resolution.
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*
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* @param layout Layout of the cube map.
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* @param w Width of the cube map, in pixels.
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* @param h Height of the cube map, in pixels.
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*
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* @return Edge length of the cube map faces, in pixels.
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*/
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[[nodiscard]] static std::uint16_t infer_cube_map_face_size(cube_map_layout layout, std::uint16_t w, std::uint16_t h) noexcept;
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/// Constructs a cube texture.
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texture_cube(std::uint16_t width, std::uint16_t height, gl::pixel_type type = gl::pixel_type::uint_8, gl::pixel_format format = gl::pixel_format::rgba, gl::transfer_function transfer_function = gl::transfer_function::linear, const std::byte* data = nullptr);
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[[nodiscard]] inline constexpr texture_type get_texture_type() const noexcept override
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{
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return texture_type::cube;
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}
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/// @copydoc texture::resize(std::uint16_t, std::uint16_t, gl::pixel_type, gl::pixel_format, gl::transfer_function, const std::byte*)
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void resize(std::uint16_t width, std::uint16_t height, gl::pixel_type type, gl::pixel_format format, gl::transfer_function transfer_function, const std::byte* data) override;
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/**
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* Resizes the texture.
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*
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* @param width Texture width, in pixels.
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* @param height Texture height, in pixels.
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* @param data Pointer to pixel data.
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*/
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void resize(std::uint16_t width, std::uint16_t height, const std::byte* data);
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/// @copydoc texture::set_wrapping(gl::texture_wrapping, gl::texture_wrapping, gl::texture_wrapping)
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virtual void set_wrapping(gl::texture_wrapping wrap_s, texture_wrapping wrap_t, texture_wrapping wrap_r);
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/// Returns the edge length of the cube texture faces, in pixels.
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[[nodiscard]] inline std::uint16_t get_face_size() const noexcept
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{
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return m_face_size;
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}
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private:
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void resized();
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std::uint16_t m_face_size{};
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};
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} // namespace gl
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#endif // ANTKEEPER_GL_TEXTURE_CUBE_HPP
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