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