glm/test/external/gli/core/texture2d.inl

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2011-06-23 19:07:13 +00:00
///////////////////////////////////////////////////////////////////////////////////////////////////
// OpenGL Image Copyright (c) 2008 - 2011 G-Truc Creation (www.g-truc.net)
///////////////////////////////////////////////////////////////////////////////////////////////////
// Created : 2010-09-27
// Updated : 2010-09-27
// Licence : This source is under MIT License
// File : gli/core/texture2D.inl
///////////////////////////////////////////////////////////////////////////////////////////////////
namespace gli
{
namespace detail
{
inline texture2D::size_type sizeLinear
(
texture2D const & Texture
)
{
texture2D::size_type Result = 0;
for(texture2D::level_type Level = 0; Level < Texture.levels(); ++Level)
Result += sizeLinear(Texture[Level]);
return Result;
}
}//namespace detail
inline texture2D::texture2D()
{}
inline texture2D::texture2D
(
level_type const & Levels
)
{
this->Images.resize(Levels);
}
//inline texture2D::texture2D
//(
// image const & Mipmap,
// bool GenerateMipmaps // ToDo
//)
//{
// //std::size_t Levels = !GenerateMipmaps ? 1 : std::size_t(glm::log2(float(glm::max(Mipmap.width(), Mipmap.height()))));
// texture2D::level_type Levels = !GenerateMipmaps ? 1 : std::size_t(glm::log2(float(glm::compMax(Mipmap.dimensions()))));
// this->Mipmaps.resize(Levels);
// this->Mipmaps[0] = Mipmap;
// if(GenerateMipmaps)
// this->generateMipmaps(0);
//}
inline texture2D::~texture2D()
{}
inline image2D & texture2D::operator[] (level_type const & Level)
{
return this->Images[Level];
}
inline image2D const & texture2D::operator[] (level_type const & Level) const
{
return this->Images[Level];
}
inline bool texture2D::empty() const
{
return this->Images.size() == 0;
}
inline texture2D::format_type texture2D::format() const
{
return this->Images.empty() ? FORMAT_NULL : this->Images[0].format();
}
inline texture2D::level_type texture2D::levels() const
{
return this->Images.size();
}
inline void texture2D::resize
(
texture2D::level_type const & Levels
)
{
this->Images.resize(Levels);
}
template <typename genType>
inline void texture2D::swizzle(glm::comp X, glm::comp Y, glm::comp Z, glm::comp W)
{
for(texture2D::level_type Level = 0; Level < this->levels(); ++Level)
{
genType * Data = reinterpret_cast<genType*>(this->Images[Level].data());
texture2D::size_type Components = this->Images[Level].components();
//gli::detail::getComponents(this->Images[Level].format());
texture2D::size_type Size = (glm::compMul(this->Images[Level].dimensions()) * Components) / sizeof(genType);
for(texture2D::size_type i = 0; i < Size; ++i)
{
genType Copy = Data[i];
if(Components > 0)
Data[i][0] = Copy[X];
if(Components > 1)
Data[i][1] = Copy[Y];
if(Components > 2)
Data[i][2] = Copy[Z];
if(Components > 3)
Data[i][3] = Copy[W];
}
}
}
/*
template <typename T>
inline T texture<T>::texture(float x, float y) const
{
size_type x_below = size_type(std::floor(x * (_width - 1)));
size_type x_above = size_type(std::ceil(x * (_width - 1)));
size_type y_below = size_type(std::floor(y * (_height - 1)));
size_type y_above = size_type(std::ceil(y * (_height - 1)));
float x_step = 1.0f / float(_width);
float y_step = 1.0f / float(_height);
float x_below_normalized = float(x_below) / float(_width - 1);
float x_above_normalized = float(x_above) / float(_width - 1);
float y_below_normalized = float(y_below) / float(_height - 1);
float y_above_normalized = float(y_above) / float(_height - 1);
T value1 = _data[x_below + y_below * _width];
T value2 = _data[x_above + y_below * _width];
T value3 = _data[x_above + y_above * _width];
T value4 = _data[x_below + y_above * _width];
T valueA = glm::mix(value1, value2, x - x_below_normalized);
T valueB = glm::mix(value4, value3, x - x_below_normalized);
T valueC = glm::mix(valueA, valueB, y - y_below_normalized);
return valueC;
}
*/
/*
template <typename T>
inline T texture(const texture2D<T>& Image2D, const glm::vec2& TexCoord)
{
texture2D<T>::size_type s_below = texture2D<T>::size_type(std::floor(TexCoord.s * (Image2D.width() - 1)));
texture2D<T>::size_type s_above = texture2D<T>::size_type(std::ceil(TexCoord.s * (Image2D.width() - 1)));
texture2D<T>::size_type t_below = texture2D<T>::size_type(std::floor(TexCoord.t * (Image2D.height() - 1)));
texture2D<T>::size_type t_above = texture2D<T>::size_type(std::ceil(TexCoord.t * (Image2D.height() - 1)));
glm::vec2::value_type s_step = 1.0f / glm::vec2::value_type(Image2D.width());
glm::vec2::value_type t_step = 1.0f / glm::vec2::value_type(Image2D.height());
glm::vec2::value_type s_below_normalized = glm::vec2::value_type(s_below) / glm::vec2::value_type(Image2D.width() - 1);
glm::vec2::value_type s_above_normalized = glm::vec2::value_type(s_above) / glm::vec2::value_type(Image2D.width() - 1);
glm::vec2::value_type t_below_normalized = glm::vec2::value_type(t_below) / glm::vec2::value_type(Image2D.height() - 1);
glm::vec2::value_type t_above_normalized = glm::vec2::value_type(t_above) / glm::vec2::value_type(Image2D.height() - 1);
T value1 = Image2D[s_below + t_below * Image2D.width()];
T value2 = Image2D[s_above + t_below * Image2D.width()];
T value3 = Image2D[s_above + t_above * Image2D.width()];
T value4 = Image2D[s_below + t_above * Image2D.width()];
T valueA = glm::mix(value1, value2, TexCoord.s - s_below_normalized);
T valueB = glm::mix(value4, value3, TexCoord.s - s_below_normalized);
T valueC = glm::mix(valueA, valueB, TexCoord.t - t_below_normalized);
return valueC;
}
template <typename T>
inline T textureNearest(const texture2D<T>& Image2D, const glm::vec2& TexCoord)
{
texture2D<T>::size_type s = texture2D<T>::size_type(glm::roundGTX(TexCoord.s * (Image2D.width() - 1)));
texture2D<T>::size_type t = texture2D<T>::size_type(std::roundGTX(TexCoord.t * (Image2D.height() - 1)));
return Image2D[s + t * Image2D.width()];
}
*/
namespace wip
{
////////////////
// image
/*
//
template
<
typename coordType
>
template
<
typename genType,
template <typename> class surface
>
typename texture2D<genType, surface>::value_type &
texture2D<genType, surface>::image_impl<coordType>::operator()
(
coordType const & Coord
)
{
}
*/
/*
//
template
<
typename coordType
>
template
<
typename genType,
template <typename> class surface
>
typename texture2D<genType, surface>::value_type const &
texture2D<genType, surface>::image_impl::operator()
(
coordType const & Coord
) const
{
return value_type(0);
}
*/
/*
//
template
<
typename coordType
>
template
<
typename genType,
template <typename> class surface
>
void texture2D<genType, surface>::image_impl::operator()
(
coordType const & Coord
) const
{
}
*/
////
//template
//<
// typename genType,
// template <typename> class surface
//>
//template
//<
// typename coordType
//>
//typename texture2D<genType, surface>::value_type const &
//texture2D<genType, surface>::image_impl::operator()
//(
// coordType const & Coord
//) const
//{
// return value_type(0);
//}
//////////////////
//// texture2D
////
//template
//<
// typename genType,
// template <typename> class surface
//>
//typename texture2D<genType, surface>::level_type texture2D<genType, surface>::levels() const
//{
// return this->Mipmaps.size();
//}
////
//template
//<
// typename genType,
// template <typename> class surface
//>
//typename texture2D<genType, surface>::image & texture2D<genType, surface>::operator[]
//(
// typename texture2D<genType, surface>::level_type Level
//)
//{
// return this->Mipmaps[Level];
//}
////
//template
//<
// typename genType,
// template <typename> class surface
//>
//typename texture2D<genType, surface>::image const & texture2D<genType, surface>::operator[]
//(
// typename texture2D<genType, surface>::level_type Level
//) const
//{
// return this->Mipmaps[Level];
//}
}//namespace wip
}//namespace gli