shader-variable.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_SHADER_INPUT_HPP
#define ANTKEEPER_GL_SHADER_INPUT_HPP
 
#include <engine/math/vector.hpp>
#include <engine/math/matrix.hpp>
#include <engine/gl/shader-variable-type.hpp>
#include <cstdint>
#include <span>
#include <memory>
 
namespace gl {
 
class texture_1d;
class texture_2d;
class texture_3d;
class texture_cube;
 
class shader_variable
{
public:
    [[nodiscard]] virtual constexpr shader_variable_type type() const noexcept = 0;
    
    [[nodiscard]] inline std::size_t size() const noexcept
    {
        return m_size;
    }
    
    virtual void update(bool value) const;
    virtual void update(const math::bvec2& value) const;
    virtual void update(const math::bvec3& value) const;
    virtual void update(const math::bvec4& value) const;
    
    virtual void update(int value) const;
    virtual void update(const math::ivec2& value) const;
    virtual void update(const math::ivec3& value) const;
    virtual void update(const math::ivec4& value) const;
    
    virtual void update(unsigned int value) const;
    virtual void update(const math::uvec2& value) const;
    virtual void update(const math::uvec3& value) const;
    virtual void update(const math::uvec4& value) const;
    
    virtual void update(float value) const;
    virtual void update(const math::fvec2& value) const;
    virtual void update(const math::fvec3& value) const;
    virtual void update(const math::fvec4& value) const;
    
    virtual void update(const math::fmat2& value) const;
    virtual void update(const math::fmat3& value) const;
    virtual void update(const math::fmat4& value) const;
    
    virtual void update(const texture_1d& value) const;
    virtual void update(const texture_2d& value) const;
    virtual void update(const texture_3d& value) const;
    virtual void update(const texture_cube& value) const;
    
    virtual void update(bool value, std::size_t index) const;
    virtual void update(const math::bvec2& value, std::size_t index) const;
    virtual void update(const math::bvec3& value, std::size_t index) const;
    virtual void update(const math::bvec4& value, std::size_t index) const;
    
    virtual void update(int value, std::size_t index) const;
    virtual void update(const math::ivec2& value, std::size_t index) const;
    virtual void update(const math::ivec3& value, std::size_t index) const;
    virtual void update(const math::ivec4& value, std::size_t index) const;
    
    virtual void update(unsigned int value, std::size_t index) const;
    virtual void update(const math::uvec2& value, std::size_t index) const;
    virtual void update(const math::uvec3& value, std::size_t index) const;
    virtual void update(const math::uvec4& value, std::size_t index) const;
    
    virtual void update(float value, std::size_t index) const;
    virtual void update(const math::fvec2& value, std::size_t index) const;
    virtual void update(const math::fvec3& value, std::size_t index) const;
    virtual void update(const math::fvec4& value, std::size_t index) const;
    
    virtual void update(const math::fmat2& value, std::size_t index) const;
    virtual void update(const math::fmat3& value, std::size_t index) const;
    virtual void update(const math::fmat4& value, std::size_t index) const;
    
    virtual void update(const texture_1d& value, std::size_t index) const;
    virtual void update(const texture_2d& value, std::size_t index) const;
    virtual void update(const texture_3d& value, std::size_t index) const;
    virtual void update(const texture_cube& value, std::size_t index) const;
    
    virtual void update(std::span<const bool> values, std::size_t index = 0) const;
    virtual void update(std::span<const math::bvec2> values, std::size_t index = 0) const;
    virtual void update(std::span<const math::bvec3> values, std::size_t index = 0) const;
    virtual void update(std::span<const math::bvec4> values, std::size_t index = 0) const;
    
    virtual void update(std::span<const int> values, std::size_t index = 0) const;
    virtual void update(std::span<const math::ivec2> values, std::size_t index = 0) const;
    virtual void update(std::span<const math::ivec3> values, std::size_t index = 0) const;
    virtual void update(std::span<const math::ivec4> values, std::size_t index = 0) const;
    
    virtual void update(std::span<const unsigned int> values, std::size_t index = 0) const;
    virtual void update(std::span<const math::uvec2> values, std::size_t index = 0) const;
    virtual void update(std::span<const math::uvec3> values, std::size_t index = 0) const;
    virtual void update(std::span<const math::uvec4> values, std::size_t index = 0) const;
    
    virtual void update(std::span<const float> values, std::size_t index = 0) const;
    virtual void update(std::span<const math::fvec2> values, std::size_t index = 0) const;
    virtual void update(std::span<const math::fvec3> values, std::size_t index = 0) const;
    virtual void update(std::span<const math::fvec4> values, std::size_t index = 0) const;
    
    virtual void update(std::span<const math::fmat2> values, std::size_t index = 0) const;
    virtual void update(std::span<const math::fmat3> values, std::size_t index = 0) const;
    virtual void update(std::span<const math::fmat4> values, std::size_t index = 0) const;
    
    virtual void update(std::span<const texture_1d* const> values, std::size_t index = 0) const;
    virtual void update(std::span<const texture_2d* const> values, std::size_t index = 0) const;
    virtual void update(std::span<const texture_3d* const> values, std::size_t index = 0) const;
    virtual void update(std::span<const texture_cube* const> values, std::size_t index = 0) const;
    
    virtual void update(std::span<const std::shared_ptr<texture_1d>> values, std::size_t index = 0) const;
    virtual void update(std::span<const std::shared_ptr<texture_2d>> values, std::size_t index = 0) const;
    virtual void update(std::span<const std::shared_ptr<texture_3d>> values, std::size_t index = 0) const;
    virtual void update(std::span<const std::shared_ptr<texture_cube>> values, std::size_t index = 0) const;
    
protected:
    explicit shader_variable(std::size_t size) noexcept;
    
private:
    const std::size_t m_size{0};
};
 
} // namespace gl
 
#endif // ANTKEEPER_GL_SHADER_VARIABLE_HPP