glm/test/external/gli/levels.hpp
John McFarlane 506a487d24 parameterize number of dimensions of vector in tvec<D, T, P>
- specializes for 1, 2, 3 and 4-dimensional vector types
  which are then aliased as tvec1, tvec2, tvec3 and tvec4
- requires C++11 aliases; breaks compatability with C++03
- tested on:
  - clang-3.5.2, clang-3.8.0
  - gcc 4.8.5, gcc 5.4.1, gcc 6.2.0

TODO:
- still uses template template parameters - most can probably be removed
- some definitions might now be de-duplicated
2016-12-28 17:07:12 -08:00

49 lines
1.4 KiB
C++

/// @brief Include to compute the number of mipmaps levels necessary to create a mipmap complete texture.
/// @file gli/levels.hpp
#pragma once
#include "type.hpp"
namespace gli
{
/// Compute the number of mipmaps levels necessary to create a mipmap complete texture
///
/// @param Extent Extent of the texture base level mipmap
/// @tparam vecType Vector type used to express the dimensions of a texture of any kind.
/// @code
/// #include <gli/texture2d.hpp>
/// #include <gli/levels.hpp>
/// ...
/// gli::texture2d::extent_type Extent(32, 10);
/// gli::texture2d Texture(gli::levels(Extent));
/// @endcode
template <int D, typename T, precision P, template <int, typename, precision> class vecType>
T levels(vecType<D, T, P> const& Extent);
/*
/// Compute the number of mipmaps levels necessary to create a mipmap complete texture
///
/// @param Extent Extent of the texture base level mipmap
/// @code
/// #include <gli/texture2d.hpp>
/// #include <gli/levels.hpp>
/// ...
/// gli::texture2d Texture(32);
/// @endcode
size_t levels(size_t Extent);
/// Compute the number of mipmaps levels necessary to create a mipmap complete texture
///
/// @param Extent Extent of the texture base level mipmap
/// @code
/// #include <gli/texture2d.hpp>
/// #include <gli/levels.hpp>
/// ...
/// gli::texture2d Texture(32);
/// @endcode
int levels(int Extent);
*/
}//namespace gli
#include "./core/levels.inl"