136 lines
4.0 KiB
Plaintext
136 lines
4.0 KiB
Plaintext
//---------------------------------------------------------------------------//
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// Copyright (c) 2013-2015 Kyle Lutz <kyle.r.lutz@gmail.com>
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//
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// Distributed under the Boost Software License, Version 1.0
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// See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt
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//
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// See http://boostorg.github.com/compute for more information.
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//---------------------------------------------------------------------------//
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#ifndef BOOST_COMPUTE_IMAGE_IMAGE_FORMAT_HPP
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#define BOOST_COMPUTE_IMAGE_IMAGE_FORMAT_HPP
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#include <boost/compute/cl.hpp>
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namespace boost {
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namespace compute {
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/// \class image_format
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/// \brief A OpenCL image format
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///
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/// For example, to create a format for a 8-bit RGBA image:
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/// \code
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/// boost::compute::image_format rgba8(CL_RGBA, CL_UNSIGNED_INT8);
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/// \endcode
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///
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/// After being constructed, image_format objects are usually passed to the
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/// constructor of the various image classes (e.g. \ref image2d, \ref image3d)
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/// to create an image object on a compute device.
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///
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/// Image formats supported by a context can be queried with the static
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/// get_supported_formats() in each image class. For example:
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/// \code
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/// std::vector<image_format> formats = image2d::get_supported_formats(ctx);
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/// \endcode
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///
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/// \see image2d
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class image_format
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{
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public:
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enum channel_order {
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r = CL_R,
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a = CL_A,
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intensity = CL_INTENSITY,
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luminance = CL_LUMINANCE,
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rg = CL_RG,
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ra = CL_RA,
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rgb = CL_RGB,
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rgba = CL_RGBA,
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argb = CL_ARGB,
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bgra = CL_BGRA
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};
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enum channel_data_type {
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snorm_int8 = CL_SNORM_INT8,
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snorm_int16 = CL_SNORM_INT16,
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unorm_int8 = CL_UNORM_INT8,
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unorm_int16 = CL_UNORM_INT16,
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unorm_short_565 = CL_UNORM_SHORT_565,
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unorm_short_555 = CL_UNORM_SHORT_555,
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unorm_int_101010 = CL_UNORM_INT_101010,
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signed_int8 = CL_SIGNED_INT8,
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signed_int16 = CL_SIGNED_INT16,
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signed_int32 = CL_SIGNED_INT32,
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unsigned_int8 = CL_UNSIGNED_INT8,
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unsigned_int16 = CL_UNSIGNED_INT16,
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unsigned_int32 = CL_UNSIGNED_INT32,
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float16 = CL_HALF_FLOAT,
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float32 = CL_FLOAT
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};
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/// Creates a new image format object with \p order and \p type.
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explicit image_format(cl_channel_order order, cl_channel_type type)
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{
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m_format.image_channel_order = order;
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m_format.image_channel_data_type = type;
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}
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/// Creates a new image format object from \p format.
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explicit image_format(const cl_image_format &format)
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{
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m_format.image_channel_order = format.image_channel_order;
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m_format.image_channel_data_type = format.image_channel_data_type;
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}
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/// Creates a new image format object as a copy of \p other.
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image_format(const image_format &other)
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: m_format(other.m_format)
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{
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}
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/// Copies the format from \p other to \c *this.
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image_format& operator=(const image_format &other)
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{
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if(this != &other){
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m_format = other.m_format;
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}
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return *this;
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}
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/// Destroys the image format object.
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~image_format()
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{
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}
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/// Returns a pointer to the \c cl_image_format object.
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const cl_image_format* get_format_ptr() const
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{
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return &m_format;
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}
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/// Returns \c true if \c *this is the same as \p other.
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bool operator==(const image_format &other) const
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{
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return m_format.image_channel_order ==
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other.m_format.image_channel_order &&
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m_format.image_channel_data_type ==
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other.m_format.image_channel_data_type;
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}
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/// Returns \c true if \c *this is not the same as \p other.
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bool operator!=(const image_format &other) const
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{
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return !(*this == other);
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}
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private:
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cl_image_format m_format;
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};
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} // end compute namespace
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} // end boost namespace
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#endif // BOOST_COMPUTE_IMAGE_IMAGE_FORMAT_HPP
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