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- /*
- * Copyright (C) 2020 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/>.
- */
-
- #include "rasterizer/shader.hpp"
- #include <glad/glad.h>
- #include <stdexcept>
-
- static constexpr GLenum shader_type_lut[] =
- {
- GL_VERTEX_SHADER,
- GL_FRAGMENT_SHADER,
- GL_GEOMETRY_SHADER
- };
-
- shader::shader(shader_type type, const std::string& source):
- gl_shader_id(0),
- type(type)
- {
- GLenum gl_shader_type = shader_type_lut[static_cast<std::size_t>(type)];
- const char* source_c_str = source.c_str();
-
- gl_shader_id = glCreateShader(gl_shader_type);
- glShaderSource(gl_shader_id, 1, &source_c_str, nullptr);
- glCompileShader(gl_shader_id);
-
- GLint status;
- glGetShaderiv(gl_shader_id, GL_COMPILE_STATUS, &status);
- if (status == GL_FALSE)
- {
- throw std::runtime_error(get_info_log().c_str());
- }
- }
-
- shader::~shader()
- {
- glDeleteShader(gl_shader_id);
- }
-
- std::string shader::get_info_log() const
- {
- GLint length;
- glGetShaderiv(gl_shader_id, GL_INFO_LOG_LENGTH, &length);
-
- if (length > 0)
- {
- std::string log(length, '\0');
- glGetShaderInfoLog(gl_shader_id, length, &length, &log[0]);
- return log;
- }
-
- return std::string();
- }
-
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