mirror of
https://github.com/g-truc/glm.git
synced 2024-11-26 02:04:35 +00:00
73 lines
2.6 KiB
C++
73 lines
2.6 KiB
C++
/// @brief Include to sample 2d textures.
|
|
/// @file gli/sampler2d.hpp
|
|
|
|
#pragma once
|
|
|
|
#include "sampler.hpp"
|
|
#include "texture2d.hpp"
|
|
#include "core/mipmaps_compute.hpp"
|
|
#include "core/convert_func.hpp"
|
|
|
|
namespace gli
|
|
{
|
|
/// 2d texture sampler
|
|
/// @tparam T Sampler can fetch, write and interpret any texture format but will expose and process the data through type T conversions.
|
|
/// @tparam P Precision in term of ULPs
|
|
template <typename T, precision P = defaultp>
|
|
class sampler2d : public sampler
|
|
{
|
|
private:
|
|
typedef typename detail::interpolate<T>::type interpolate_type;
|
|
|
|
public:
|
|
typedef texture2d texture_type;
|
|
typedef typename texture_type::size_type size_type;
|
|
typedef typename texture_type::extent_type extent_type;
|
|
typedef interpolate_type level_type;
|
|
typedef vec<2, interpolate_type, P> normalized_type;
|
|
typedef vec<4, T, P> texel_type;
|
|
|
|
sampler2d(texture_type const& Texture, wrap Wrap, filter Mip = FILTER_NEAREST, filter Min = FILTER_NEAREST, texel_type const& BorderColor = texel_type(0, 0, 0, 1));
|
|
|
|
/// Access the sampler texture object
|
|
texture_type const& operator()() const;
|
|
|
|
/// Fetch a texel from the sampler texture
|
|
texel_type texel_fetch(extent_type const& TexelCoord, size_type const& Level) const;
|
|
|
|
/// Write a texel in the sampler texture
|
|
void texel_write(extent_type const& TexelCoord, size_type const& Level, texel_type const& Texel);
|
|
|
|
/// Clear the sampler texture with a uniform texel
|
|
void clear(texel_type const& Texel);
|
|
|
|
/// Sample the sampler texture at a specific level
|
|
texel_type texture_lod(normalized_type const& SampleCoord, level_type Level) const;
|
|
|
|
/// Generate all the mipmaps of the sampler texture from the texture base level
|
|
void generate_mipmaps(filter Minification);
|
|
|
|
/// Generate the mipmaps of the sampler texture from the texture base level to the texture max level included
|
|
void generate_mipmaps(size_type BaseLevel, size_type MaxLevel, filter Minification);
|
|
|
|
private:
|
|
typedef typename detail::convert<texture_type, T, P>::func convert_type;
|
|
typedef typename detail::convert<texture_type, T, P>::fetchFunc fetch_type;
|
|
typedef typename detail::convert<texture_type, T, P>::writeFunc write_type;
|
|
typedef typename detail::filterBase<detail::DIMENSION_2D, texture_type, interpolate_type, normalized_type, fetch_type, texel_type>::filterFunc filter_type;
|
|
|
|
texture_type Texture;
|
|
convert_type Convert;
|
|
texel_type BorderColor;
|
|
filter_type Filter;
|
|
};
|
|
|
|
typedef sampler2d<float> fsampler2D;
|
|
typedef sampler2d<double> dsampler2D;
|
|
typedef sampler2d<unsigned int> usampler2D;
|
|
typedef sampler2d<int> isampler2D;
|
|
|
|
}//namespace gli
|
|
|
|
#include "./core/sampler2d.inl"
|