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46 lines
1.6 KiB
C++
46 lines
1.6 KiB
C++
#include "../core/convert_func.hpp"
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namespace gli
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{
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template <typename texture_type>
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inline texture_type convert(texture_type const& Texture, format Format)
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{
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typedef float T;
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typedef typename texture::extent_type extent_type;
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typedef typename texture_type::size_type size_type;
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typedef typename extent_type::value_type component_type;
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typedef typename detail::convert<texture_type, T, defaultp>::fetchFunc fetch_type;
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typedef typename detail::convert<texture_type, T, defaultp>::writeFunc write_type;
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GLI_ASSERT(!Texture.empty());
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GLI_ASSERT(!is_compressed(Texture.format()) && !is_compressed(Format));
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fetch_type Fetch = detail::convert<texture_type, T, defaultp>::call(Texture.format()).Fetch;
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write_type Write = detail::convert<texture_type, T, defaultp>::call(Format).Write;
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texture Storage(Texture.target(), Format, Texture.texture::extent(), Texture.layers(), Texture.faces(), Texture.levels(), Texture.swizzles());
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texture_type Copy(Storage);
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for(size_type Layer = 0; Layer < Texture.layers(); ++Layer)
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for(size_type Face = 0; Face < Texture.faces(); ++Face)
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for(size_type Level = 0; Level < Texture.levels(); ++Level)
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{
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extent_type const& Dimensions = Texture.texture::extent(Level);
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for(component_type k = 0; k < Dimensions.z; ++k)
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for(component_type j = 0; j < Dimensions.y; ++j)
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for(component_type i = 0; i < Dimensions.x; ++i)
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{
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typename texture_type::extent_type const Texelcoord(extent_type(i, j, k));
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Write(
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Copy, Texelcoord, Layer, Face, Level,
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Fetch(Texture, Texelcoord, Layer, Face, Level));
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}
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}
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return texture_type(Copy);
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}
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}//namespace gli
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