💿🐜 Antkeeper source code
https://antkeeper.com
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69 lines
1.8 KiB
69 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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#ifndef ANTKEEPER_GL_VERTEX_ATTRIBUTE_HPP
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#define ANTKEEPER_GL_VERTEX_ATTRIBUTE_HPP
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#include <cstddef>
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#include <cstdint>
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namespace gl {
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class vertex_buffer;
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enum class vertex_attribute_type
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{
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int_8,
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uint_8,
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int_16,
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uint_16,
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int_32,
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uint_32,
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float_16,
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float_32,
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float_64
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};
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/**
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* Describes a vertex attribute within a vertex buffer.
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*
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* @see gl::vertex_buffer
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* @see gl::vertex_array
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*/
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struct vertex_attribute
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{
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/// Pointer to the vertex buffer containing vertex attribute data.
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const vertex_buffer* buffer;
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/// Offset to the first component of the first instance of this attribute in the vertex buffer, in bytes.
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std::size_t offset;
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/// Number of bytes between consecutive instances of this attribute in the vertex buffer. A value of `0` indicates attribute instances are tightly packed.
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std::size_t stride;
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/// Data type of each component in the attribute.
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vertex_attribute_type type;
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/// Number of components per attribute instance. Supported values are `1`, `2`, `3`, and `4`.
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std::uint8_t components;
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};
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} // namespace gl
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#endif // ANTKEEPER_GL_VERTEX_ATTRIBUTE_HPP
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