💿🐜 Antkeeper source code
https://antkeeper.com
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116 lines
3.1 KiB
116 lines
3.1 KiB
/*
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* Copyright (C) 2021 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_OBJECT_HPP
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#define ANTKEEPER_GL_SHADER_OBJECT_HPP
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#include "gl/shader-stage.hpp"
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#include <cstdlib>
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#include <string>
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namespace gl {
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class shader_program;
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/**
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* Shader object which can be compiled and linked to a shader program.
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*
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* @see gl::shader_program
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* @see gl::shader_stage
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*/
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class shader_object
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{
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public:
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/**
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* Creates an empty shader object for the specified shader stage.
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*
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* @param stage Shader stage in which this shader object will be used.
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*
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* @exception std::runtime_error An error occurred while creating an OpenGL shader object.
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*/
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shader_object(shader_stage stage);
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/**
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* Destroys a shader object.
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*/
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~shader_object();
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/**
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* Replaces the source code of the shader object.
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*
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* @param buffer Buffer containing shader object source code.
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* @param size Size of the source code, in bytes.
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*
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* @exception std::runtime_error Shader object handle is not a value generated by OpenGL.
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* @exception std::runtime_error Shader object handle is not a shader object.
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*/
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void source(const char* buffer, std::size_t size);
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/**
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* Compiles the shader object.
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*
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* @return `true` if the shader object was compiled successfully, `false` otherwise. If compilation fails, check the info log via shader_object::get_info_log() for more information.
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*
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* @exception std::runtime_error Shader object handle is not a value generated by OpenGL.
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* @exception std::runtime_error Shader object handle is not a shader object.
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*
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* @see shader_object::get_info_log()
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*/
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bool compile();
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/// Returns the shader stage of this shader object.
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shader_stage get_stage() const;
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/// Returns the shader object info log, which is updated when the shader is compiled.
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const std::string& get_info_log() const;
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/// Returns `true` if the shader object has been successfully compiled, `false` otherwise.
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bool was_compiled() const;
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shader_object(const shader_object&) = delete;
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shader_object& operator=(const shader_object&) = delete;
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private:
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friend class shader_program;
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unsigned int gl_shader_id;
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shader_stage stage;
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bool compiled;
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std::string info_log;
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};
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inline shader_stage shader_object::get_stage() const
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{
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return stage;
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}
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inline const std::string& shader_object::get_info_log() const
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{
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return info_log;
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}
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inline bool shader_object::was_compiled() const
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{
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return compiled;
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}
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} // namespace gl
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#endif // ANTKEEPER_GL_SHADER_OBJECT_HPP
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