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305 lines
8.0 KiB
Plaintext
305 lines
8.0 KiB
Plaintext
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///////////////////////////////////////////////////////////////////////////////////////////////////
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// OpenGL Image Copyright (c) 2008 - 2011 G-Truc Creation (www.g-truc.net)
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///////////////////////////////////////////////////////////////////////////////////////////////////
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// Created : 2010-09-27
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// Updated : 2010-09-27
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// Licence : This source is under MIT License
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// File : gli/core/texture2D.inl
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///////////////////////////////////////////////////////////////////////////////////////////////////
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namespace gli
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{
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namespace detail
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{
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inline texture2D::size_type sizeLinear
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(
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texture2D const & Texture
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)
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{
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texture2D::size_type Result = 0;
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for(texture2D::level_type Level = 0; Level < Texture.levels(); ++Level)
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Result += sizeLinear(Texture[Level]);
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return Result;
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}
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}//namespace detail
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inline texture2D::texture2D()
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{}
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inline texture2D::texture2D
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(
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level_type const & Levels
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)
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{
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this->Images.resize(Levels);
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}
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//inline texture2D::texture2D
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//(
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// image const & Mipmap,
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// bool GenerateMipmaps // ToDo
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//)
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//{
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// //std::size_t Levels = !GenerateMipmaps ? 1 : std::size_t(glm::log2(float(glm::max(Mipmap.width(), Mipmap.height()))));
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// texture2D::level_type Levels = !GenerateMipmaps ? 1 : std::size_t(glm::log2(float(glm::compMax(Mipmap.dimensions()))));
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// this->Mipmaps.resize(Levels);
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// this->Mipmaps[0] = Mipmap;
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// if(GenerateMipmaps)
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// this->generateMipmaps(0);
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//}
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inline texture2D::~texture2D()
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{}
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inline image2D & texture2D::operator[] (level_type const & Level)
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{
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return this->Images[Level];
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}
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inline image2D const & texture2D::operator[] (level_type const & Level) const
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{
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return this->Images[Level];
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}
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inline bool texture2D::empty() const
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{
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return this->Images.size() == 0;
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}
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inline texture2D::format_type texture2D::format() const
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{
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return this->Images.empty() ? FORMAT_NULL : this->Images[0].format();
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}
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inline texture2D::level_type texture2D::levels() const
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{
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return this->Images.size();
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}
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inline void texture2D::resize
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(
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texture2D::level_type const & Levels
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)
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{
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this->Images.resize(Levels);
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}
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template <typename genType>
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inline void texture2D::swizzle(glm::comp X, glm::comp Y, glm::comp Z, glm::comp W)
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{
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for(texture2D::level_type Level = 0; Level < this->levels(); ++Level)
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{
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genType * Data = reinterpret_cast<genType*>(this->Images[Level].data());
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texture2D::size_type Components = this->Images[Level].components();
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//gli::detail::getComponents(this->Images[Level].format());
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texture2D::size_type Size = (glm::compMul(this->Images[Level].dimensions()) * Components) / sizeof(genType);
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for(texture2D::size_type i = 0; i < Size; ++i)
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{
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genType Copy = Data[i];
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if(Components > 0)
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Data[i][0] = Copy[X];
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if(Components > 1)
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Data[i][1] = Copy[Y];
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if(Components > 2)
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Data[i][2] = Copy[Z];
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if(Components > 3)
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Data[i][3] = Copy[W];
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}
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}
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}
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/*
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template <typename T>
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inline T texture<T>::texture(float x, float y) const
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{
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size_type x_below = size_type(std::floor(x * (_width - 1)));
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size_type x_above = size_type(std::ceil(x * (_width - 1)));
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size_type y_below = size_type(std::floor(y * (_height - 1)));
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size_type y_above = size_type(std::ceil(y * (_height - 1)));
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float x_step = 1.0f / float(_width);
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float y_step = 1.0f / float(_height);
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float x_below_normalized = float(x_below) / float(_width - 1);
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float x_above_normalized = float(x_above) / float(_width - 1);
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float y_below_normalized = float(y_below) / float(_height - 1);
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float y_above_normalized = float(y_above) / float(_height - 1);
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T value1 = _data[x_below + y_below * _width];
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T value2 = _data[x_above + y_below * _width];
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T value3 = _data[x_above + y_above * _width];
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T value4 = _data[x_below + y_above * _width];
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T valueA = glm::mix(value1, value2, x - x_below_normalized);
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T valueB = glm::mix(value4, value3, x - x_below_normalized);
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T valueC = glm::mix(valueA, valueB, y - y_below_normalized);
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return valueC;
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}
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*/
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/*
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template <typename T>
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inline T texture(const texture2D<T>& Image2D, const glm::vec2& TexCoord)
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{
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texture2D<T>::size_type s_below = texture2D<T>::size_type(std::floor(TexCoord.s * (Image2D.width() - 1)));
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texture2D<T>::size_type s_above = texture2D<T>::size_type(std::ceil(TexCoord.s * (Image2D.width() - 1)));
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texture2D<T>::size_type t_below = texture2D<T>::size_type(std::floor(TexCoord.t * (Image2D.height() - 1)));
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texture2D<T>::size_type t_above = texture2D<T>::size_type(std::ceil(TexCoord.t * (Image2D.height() - 1)));
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glm::vec2::value_type s_step = 1.0f / glm::vec2::value_type(Image2D.width());
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glm::vec2::value_type t_step = 1.0f / glm::vec2::value_type(Image2D.height());
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glm::vec2::value_type s_below_normalized = glm::vec2::value_type(s_below) / glm::vec2::value_type(Image2D.width() - 1);
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glm::vec2::value_type s_above_normalized = glm::vec2::value_type(s_above) / glm::vec2::value_type(Image2D.width() - 1);
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glm::vec2::value_type t_below_normalized = glm::vec2::value_type(t_below) / glm::vec2::value_type(Image2D.height() - 1);
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glm::vec2::value_type t_above_normalized = glm::vec2::value_type(t_above) / glm::vec2::value_type(Image2D.height() - 1);
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T value1 = Image2D[s_below + t_below * Image2D.width()];
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T value2 = Image2D[s_above + t_below * Image2D.width()];
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T value3 = Image2D[s_above + t_above * Image2D.width()];
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T value4 = Image2D[s_below + t_above * Image2D.width()];
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T valueA = glm::mix(value1, value2, TexCoord.s - s_below_normalized);
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T valueB = glm::mix(value4, value3, TexCoord.s - s_below_normalized);
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T valueC = glm::mix(valueA, valueB, TexCoord.t - t_below_normalized);
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return valueC;
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}
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template <typename T>
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inline T textureNearest(const texture2D<T>& Image2D, const glm::vec2& TexCoord)
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{
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texture2D<T>::size_type s = texture2D<T>::size_type(glm::roundGTX(TexCoord.s * (Image2D.width() - 1)));
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texture2D<T>::size_type t = texture2D<T>::size_type(std::roundGTX(TexCoord.t * (Image2D.height() - 1)));
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return Image2D[s + t * Image2D.width()];
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}
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*/
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namespace wip
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{
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////////////////
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// image
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/*
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//
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template
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<
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typename coordType
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>
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template
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<
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typename genType,
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template <typename> class surface
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>
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typename texture2D<genType, surface>::value_type &
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texture2D<genType, surface>::image_impl<coordType>::operator()
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(
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coordType const & Coord
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)
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{
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}
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*/
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/*
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//
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template
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<
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typename coordType
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>
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template
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<
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typename genType,
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template <typename> class surface
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>
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typename texture2D<genType, surface>::value_type const &
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texture2D<genType, surface>::image_impl::operator()
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(
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coordType const & Coord
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) const
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{
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return value_type(0);
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}
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*/
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/*
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//
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template
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<
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typename coordType
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>
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template
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<
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typename genType,
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template <typename> class surface
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>
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void texture2D<genType, surface>::image_impl::operator()
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(
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coordType const & Coord
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) const
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{
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}
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*/
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////
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//template
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//<
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// typename genType,
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// template <typename> class surface
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//>
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//template
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//<
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// typename coordType
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//>
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//typename texture2D<genType, surface>::value_type const &
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//texture2D<genType, surface>::image_impl::operator()
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//(
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// coordType const & Coord
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//) const
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//{
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// return value_type(0);
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//}
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//////////////////
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//// texture2D
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////
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//template
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//<
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// typename genType,
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// template <typename> class surface
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//>
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//typename texture2D<genType, surface>::level_type texture2D<genType, surface>::levels() const
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//{
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// return this->Mipmaps.size();
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//}
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////
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//template
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//<
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// typename genType,
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// template <typename> class surface
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//>
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//typename texture2D<genType, surface>::image & texture2D<genType, surface>::operator[]
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//(
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// typename texture2D<genType, surface>::level_type Level
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//)
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//{
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// return this->Mipmaps[Level];
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//}
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////
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//template
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//<
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// typename genType,
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// template <typename> class surface
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//>
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//typename texture2D<genType, surface>::image const & texture2D<genType, surface>::operator[]
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//(
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// typename texture2D<genType, surface>::level_type Level
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//) const
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//{
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// return this->Mipmaps[Level];
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//}
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}//namespace wip
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}//namespace gli
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