💿🐜 Antkeeper source code
https://antkeeper.com
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66 lines
1.8 KiB
66 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/vertex-array.hpp"
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#include "gl/vertex-buffer.hpp"
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#include <glad/glad.h>
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namespace gl {
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static constexpr GLenum vertex_attribute_type_lut[] =
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{
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GL_BYTE,
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GL_UNSIGNED_BYTE,
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GL_SHORT,
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GL_UNSIGNED_SHORT,
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GL_INT,
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GL_UNSIGNED_INT,
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GL_HALF_FLOAT,
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GL_FLOAT,
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GL_DOUBLE
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};
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vertex_array::vertex_array():
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gl_array_id(0)
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{
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glGenVertexArrays(1, &gl_array_id);
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}
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vertex_array::~vertex_array()
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{
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glDeleteVertexArrays(1, &gl_array_id);
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}
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void vertex_array::bind_attribute(unsigned int index, const vertex_buffer& buffer, int size, vertex_attribute_type type, int stride, std::size_t offset)
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{
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GLenum gl_type = vertex_attribute_type_lut[static_cast<std::size_t>(type)];
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glBindVertexArray(gl_array_id);
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glBindBuffer(GL_ARRAY_BUFFER, buffer.gl_buffer_id);
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glVertexAttribPointer(index, size, gl_type, GL_FALSE, stride, (const GLvoid*)offset);
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glEnableVertexAttribArray(index);
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}
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void vertex_array::bind_elements(const vertex_buffer& buffer)
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{
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glBindVertexArray(gl_array_id);
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glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, buffer.gl_buffer_id);
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}
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} // namespace gl
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