texture_view Class

Article
04/28/2015

Provides read access and write access to a texture. texture_view can only be used to read textures whose value type is int, unsigned int, or float that have default 32-bit bpse. To read other texture formats, use texture_view<const _Value_type, _Rank>.

template <
   typename _Value_type,
   int _Rank
>
class texture_view;

template <
   typename _Value_type,
   int _Rank
>
class texture_view : public details::_Texture_base<_Value_type, _Rank>;

template <
   typename _Value_type,
   int _Rank
>
class texture_view<const _Value_type, _Rank> : public details::_Texture_base<_Value_type, _Rank>;

Parameters

_Value_type
The type of the elements in the texture aggregate.
_Rank
The rank of the texture_view.

Members

Public Typedefs

Name	Description
value_type	The type of the elements in the texture aggregates.
coordinates_type	The type of the coordinate used to specify a texel in the texture_view—that is, a short_vector that has the same rank as the associated texture that has a value type of float.
gather_return_type	The return type used for gather operations—that is, a rank 4 short_vector that holds the four homogenous color components gathered from the four texel values sampled.

Public Constructors

Name	Description
texture_view::texture_view Constructor	Overloaded. Constructs a texture_view instance.
texture_view::~texture_view Destructor	Destroys the texture_view instance.

Public Methods

Name	Description
texture_view::gather_alpha Method	Overloaded. Samples the texture at the specified coordinates by using the specified sampling configuration and returns the alpha (w) components of the four sampled texels.
texture_view::gather_blue Method	Overloaded. Samples the texture at the specified coordinates by using the specified sampling configuration and returns the blue (z) components of the four sampled texels.
texture_view::gather_green Method	Overloaded. Samples the texture at the specified coordinates by using the specified sampling configuration and returns the green (y) components of the four sampled texels.
texture_view::gather_red Method	Overloaded. Samples the texture at the specified coordinates by using the specified sampling configuration and returns the red (x) components of the four sampled texels.
texture_view::get Method	Overloaded. Gets the element value by index.
texture_view::sample Method	Overloaded. Samples the texture at the specified coordinates and level of detail by using the specified sampling configuration.
texture_view::set Method	Sets the value of an element by index.

Public Operators

Name	Description
texture_view::operator() Operator	Overloaded. Gets the element value by index.
texture_view::operator[] Operator	Overloaded. Gets the element value by index.
texture_view::operator= Operator	Overloaded. Assignment operator.

Public Data Members

Name	Description
texture_view::value_type Data Member	The value type of the elements of the texture_view.

Inheritance Hierarchy

_Texture_base

texture_view

Requirements

Header: amp_graphics.h

Namespace: concurrency::graphics

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