texture-cube.hpp

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/*
 * Copyright (C) 2023  Christopher J. Howard
 *
 * This file is part of Antkeeper source code.
 *
 * Antkeeper source code is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Antkeeper source code is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Antkeeper source code.  If not, see <http://www.gnu.org/licenses/>.
 */
 
#ifndef ANTKEEPER_GL_TEXTURE_CUBE_HPP
#define ANTKEEPER_GL_TEXTURE_CUBE_HPP
 
#include <engine/gl/texture.hpp>
#include <engine/gl/cube-map-layout.hpp>
 
namespace gl {
 
class texture_cube: public texture
{
public:
    [[nodiscard]] static cube_map_layout infer_cube_map_layout(std::uint16_t w, std::uint16_t h) noexcept;
    
    [[nodiscard]] static std::uint16_t infer_cube_map_face_size(cube_map_layout layout, std::uint16_t w, std::uint16_t h) noexcept;
    
    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);
    
    [[nodiscard]] inline constexpr texture_type get_texture_type() const noexcept override
    {
        return texture_type::cube;
    }
    
    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;
    
    void resize(std::uint16_t width, std::uint16_t height, const std::byte* data);
    
    virtual void set_wrapping(gl::texture_wrapping wrap_s, texture_wrapping wrap_t, texture_wrapping wrap_r);
    
    [[nodiscard]] inline std::uint16_t get_face_size() const noexcept
    {
        return m_face_size;
    }
    
private:
    void resized();
    
    std::uint16_t m_face_size{};
};
 
} // namespace gl
 
#endif // ANTKEEPER_GL_TEXTURE_CUBE_HPP