💿🐜 Antkeeper source code
https://antkeeper.com
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72 lines
1.8 KiB
72 lines
1.8 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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#include "gl/shader.hpp"
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#include <glad/glad.h>
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#include <stdexcept>
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namespace gl {
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static constexpr GLenum shader_type_lut[] =
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{
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GL_VERTEX_SHADER,
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GL_FRAGMENT_SHADER,
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GL_GEOMETRY_SHADER
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};
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shader::shader(shader_type type, const std::string& source):
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gl_shader_id(0),
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type(type)
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{
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GLenum gl_shader_type = shader_type_lut[static_cast<std::size_t>(type)];
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const char* source_c_str = source.c_str();
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gl_shader_id = glCreateShader(gl_shader_type);
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glShaderSource(gl_shader_id, 1, &source_c_str, nullptr);
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glCompileShader(gl_shader_id);
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GLint status;
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glGetShaderiv(gl_shader_id, GL_COMPILE_STATUS, &status);
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if (status == GL_FALSE)
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{
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throw std::runtime_error(get_info_log().c_str());
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}
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}
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shader::~shader()
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{
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glDeleteShader(gl_shader_id);
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}
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std::string shader::get_info_log() const
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{
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GLint length;
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glGetShaderiv(gl_shader_id, GL_INFO_LOG_LENGTH, &length);
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if (length > 0)
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{
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std::string log(length, '\0');
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glGetShaderInfoLog(gl_shader_id, length, &length, &log[0]);
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return log;
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}
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return std::string();
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}
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} // namespace gl
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