💿🐜 Antkeeper source code
https://antkeeper.com
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191 lines
7.7 KiB
191 lines
7.7 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_SHADER_INPUT_HPP
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#define ANTKEEPER_GL_SHADER_INPUT_HPP
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#include <engine/math/vector.hpp>
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#include <engine/math/matrix.hpp>
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#include <engine/gl/shader-variable-type.hpp>
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#include <cstdint>
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#include <span>
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#include <memory>
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namespace gl {
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class texture_1d;
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class texture_2d;
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class texture_3d;
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class texture_cube;
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/**
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* Shader program variable.
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*/
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class shader_variable
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{
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public:
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/**
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* Returns the shader variable data type.
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*/
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[[nodiscard]] virtual constexpr shader_variable_type type() const noexcept = 0;
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/**
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* Returns the number of elements in an array variable, or `1` if the variable is not an array.
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*/
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[[nodiscard]] inline std::size_t size() const noexcept
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{
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return m_size;
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}
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/**
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* Updates the value of the variable. If the variable is an array, the value of the first element will be updated.
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*
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* @param value Update value.
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*
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* @throw std::invalid_argument Shader variable type mismatch.
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*/
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///@{
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virtual void update(bool value) const;
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virtual void update(const math::bvec2& value) const;
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virtual void update(const math::bvec3& value) const;
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virtual void update(const math::bvec4& value) const;
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virtual void update(int value) const;
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virtual void update(const math::ivec2& value) const;
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virtual void update(const math::ivec3& value) const;
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virtual void update(const math::ivec4& value) const;
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virtual void update(unsigned int value) const;
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virtual void update(const math::uvec2& value) const;
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virtual void update(const math::uvec3& value) const;
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virtual void update(const math::uvec4& value) const;
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virtual void update(float value) const;
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virtual void update(const math::fvec2& value) const;
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virtual void update(const math::fvec3& value) const;
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virtual void update(const math::fvec4& value) const;
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virtual void update(const math::fmat2& value) const;
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virtual void update(const math::fmat3& value) const;
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virtual void update(const math::fmat4& value) const;
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virtual void update(const texture_1d& value) const;
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virtual void update(const texture_2d& value) const;
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virtual void update(const texture_3d& value) const;
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virtual void update(const texture_cube& value) const;
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///@}
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/**
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* Updates the value of a single element in an array variable.
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*
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* @param value Update value.
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* @param index Index of the element to update.
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*
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* @throw std::invalid_argument Shader variable type mismatch.
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*/
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/// @{
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virtual void update(bool value, std::size_t index) const;
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virtual void update(const math::bvec2& value, std::size_t index) const;
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virtual void update(const math::bvec3& value, std::size_t index) const;
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virtual void update(const math::bvec4& value, std::size_t index) const;
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virtual void update(int value, std::size_t index) const;
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virtual void update(const math::ivec2& value, std::size_t index) const;
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virtual void update(const math::ivec3& value, std::size_t index) const;
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virtual void update(const math::ivec4& value, std::size_t index) const;
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virtual void update(unsigned int value, std::size_t index) const;
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virtual void update(const math::uvec2& value, std::size_t index) const;
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virtual void update(const math::uvec3& value, std::size_t index) const;
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virtual void update(const math::uvec4& value, std::size_t index) const;
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virtual void update(float value, std::size_t index) const;
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virtual void update(const math::fvec2& value, std::size_t index) const;
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virtual void update(const math::fvec3& value, std::size_t index) const;
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virtual void update(const math::fvec4& value, std::size_t index) const;
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virtual void update(const math::fmat2& value, std::size_t index) const;
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virtual void update(const math::fmat3& value, std::size_t index) const;
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virtual void update(const math::fmat4& value, std::size_t index) const;
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virtual void update(const texture_1d& value, std::size_t index) const;
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virtual void update(const texture_2d& value, std::size_t index) const;
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virtual void update(const texture_3d& value, std::size_t index) const;
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virtual void update(const texture_cube& value, std::size_t index) const;
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///@}
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/**
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* Updates the values of one or more elements in an array variable.
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*
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* @param values Contiguous sequence of update values.
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* @param index Index of the first element to update.
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*
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* @throw std::invalid_argument Shader variable type mismatch.
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*/
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///@{
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virtual void update(std::span<const bool> values, std::size_t index = 0) const;
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virtual void update(std::span<const math::bvec2> values, std::size_t index = 0) const;
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virtual void update(std::span<const math::bvec3> values, std::size_t index = 0) const;
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virtual void update(std::span<const math::bvec4> values, std::size_t index = 0) const;
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virtual void update(std::span<const int> values, std::size_t index = 0) const;
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virtual void update(std::span<const math::ivec2> values, std::size_t index = 0) const;
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virtual void update(std::span<const math::ivec3> values, std::size_t index = 0) const;
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virtual void update(std::span<const math::ivec4> values, std::size_t index = 0) const;
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virtual void update(std::span<const unsigned int> values, std::size_t index = 0) const;
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virtual void update(std::span<const math::uvec2> values, std::size_t index = 0) const;
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virtual void update(std::span<const math::uvec3> values, std::size_t index = 0) const;
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virtual void update(std::span<const math::uvec4> values, std::size_t index = 0) const;
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virtual void update(std::span<const float> values, std::size_t index = 0) const;
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virtual void update(std::span<const math::fvec2> values, std::size_t index = 0) const;
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virtual void update(std::span<const math::fvec3> values, std::size_t index = 0) const;
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virtual void update(std::span<const math::fvec4> values, std::size_t index = 0) const;
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virtual void update(std::span<const math::fmat2> values, std::size_t index = 0) const;
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virtual void update(std::span<const math::fmat3> values, std::size_t index = 0) const;
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virtual void update(std::span<const math::fmat4> values, std::size_t index = 0) const;
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virtual void update(std::span<const texture_1d* const> values, std::size_t index = 0) const;
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virtual void update(std::span<const texture_2d* const> values, std::size_t index = 0) const;
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virtual void update(std::span<const texture_3d* const> values, std::size_t index = 0) const;
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virtual void update(std::span<const texture_cube* const> values, std::size_t index = 0) const;
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virtual void update(std::span<const std::shared_ptr<texture_1d>> values, std::size_t index = 0) const;
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virtual void update(std::span<const std::shared_ptr<texture_2d>> values, std::size_t index = 0) const;
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virtual void update(std::span<const std::shared_ptr<texture_3d>> values, std::size_t index = 0) const;
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virtual void update(std::span<const std::shared_ptr<texture_cube>> values, std::size_t index = 0) const;
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///@}
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protected:
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/**
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* Constructs a shader variable.
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*
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* @param size Number of elements in the array, or `1` if the variable is not an array.
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*/
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explicit shader_variable(std::size_t size) noexcept;
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private:
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const std::size_t m_size{0};
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};
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} // namespace gl
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#endif // ANTKEEPER_GL_SHADER_VARIABLE_HPP
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