263 lines
7.8 KiB
C++
263 lines
7.8 KiB
C++
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//---------------------------------------------------------------------------//
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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_IMAGE2D_HPP
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#define BOOST_COMPUTE_IMAGE_IMAGE2D_HPP
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#include <boost/throw_exception.hpp>
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#include <boost/compute/config.hpp>
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#include <boost/compute/context.hpp>
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#include <boost/compute/exception/opencl_error.hpp>
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#include <boost/compute/image/image_format.hpp>
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#include <boost/compute/image/image_object.hpp>
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#include <boost/compute/detail/get_object_info.hpp>
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#include <boost/compute/type_traits/type_name.hpp>
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#include <boost/compute/utility/extents.hpp>
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namespace boost {
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namespace compute {
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// forward declarations
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class command_queue;
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/// \class image2d
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/// \brief An OpenCL 2D image object
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///
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/// For example, to create a 640x480 8-bit RGBA image:
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///
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/// \snippet test/test_image2d.cpp create_image
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///
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/// \see image_format, image3d
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class image2d : public image_object
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{
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public:
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/// Creates a null image2d object.
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image2d()
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: image_object()
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{
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}
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/// Creates a new image2d object.
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///
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/// \see_opencl_ref{clCreateImage}
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image2d(const context &context,
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size_t image_width,
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size_t image_height,
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const image_format &format,
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cl_mem_flags flags = read_write,
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void *host_ptr = 0,
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size_t image_row_pitch = 0)
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{
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cl_int error = 0;
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#ifdef CL_VERSION_1_2
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cl_image_desc desc;
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desc.image_type = CL_MEM_OBJECT_IMAGE2D;
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desc.image_width = image_width;
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desc.image_height = image_height;
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desc.image_depth = 1;
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desc.image_array_size = 0;
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desc.image_row_pitch = image_row_pitch;
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desc.image_slice_pitch = 0;
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desc.num_mip_levels = 0;
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desc.num_samples = 0;
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#ifdef CL_VERSION_2_0
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desc.mem_object = 0;
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#else
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desc.buffer = 0;
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#endif
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m_mem = clCreateImage(context,
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flags,
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format.get_format_ptr(),
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&desc,
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host_ptr,
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&error);
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#else
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m_mem = clCreateImage2D(context,
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flags,
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format.get_format_ptr(),
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image_width,
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image_height,
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image_row_pitch,
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host_ptr,
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&error);
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#endif
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if(!m_mem){
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BOOST_THROW_EXCEPTION(opencl_error(error));
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}
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}
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/// \internal_ (deprecated)
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image2d(const context &context,
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cl_mem_flags flags,
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const image_format &format,
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size_t image_width,
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size_t image_height,
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size_t image_row_pitch = 0,
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void *host_ptr = 0)
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{
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cl_int error = 0;
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#ifdef CL_VERSION_1_2
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cl_image_desc desc;
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desc.image_type = CL_MEM_OBJECT_IMAGE2D;
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desc.image_width = image_width;
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desc.image_height = image_height;
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desc.image_depth = 1;
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desc.image_array_size = 0;
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desc.image_row_pitch = image_row_pitch;
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desc.image_slice_pitch = 0;
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desc.num_mip_levels = 0;
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desc.num_samples = 0;
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#ifdef CL_VERSION_2_0
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desc.mem_object = 0;
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#else
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desc.buffer = 0;
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#endif
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m_mem = clCreateImage(context,
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flags,
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format.get_format_ptr(),
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&desc,
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host_ptr,
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&error);
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#else
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m_mem = clCreateImage2D(context,
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flags,
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format.get_format_ptr(),
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image_width,
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image_height,
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image_row_pitch,
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host_ptr,
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&error);
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#endif
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if(!m_mem){
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BOOST_THROW_EXCEPTION(opencl_error(error));
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}
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}
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/// Creates a new image2d as a copy of \p other.
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image2d(const image2d &other)
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: image_object(other)
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{
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}
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/// Copies the image2d from \p other.
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image2d& operator=(const image2d &other)
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{
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image_object::operator=(other);
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return *this;
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}
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#ifndef BOOST_COMPUTE_NO_RVALUE_REFERENCES
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/// Move-constructs a new image object from \p other.
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image2d(image2d&& other) BOOST_NOEXCEPT
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: image_object(std::move(other))
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{
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}
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/// Move-assigns the image from \p other to \c *this.
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image2d& operator=(image2d&& other) BOOST_NOEXCEPT
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{
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image_object::operator=(std::move(other));
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return *this;
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}
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#endif // BOOST_COMPUTE_NO_RVALUE_REFERENCES
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/// Destroys the image2d object.
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~image2d()
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{
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}
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/// Returns the size (width, height) of the image.
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extents<2> size() const
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{
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extents<2> size;
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size[0] = get_info<size_t>(CL_IMAGE_WIDTH);
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size[1] = get_info<size_t>(CL_IMAGE_HEIGHT);
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return size;
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}
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/// Returns the origin of the image (\c 0, \c 0).
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extents<2> origin() const
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{
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return extents<2>();
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}
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/// Returns information about the image.
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///
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/// \see_opencl_ref{clGetImageInfo}
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template<class T>
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T get_info(cl_image_info info) const
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{
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return detail::get_object_info<T>(clGetImageInfo, m_mem, info);
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}
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/// \overload
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template<int Enum>
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typename detail::get_object_info_type<image2d, Enum>::type
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get_info() const;
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/// Returns the supported image formats for the context.
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///
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/// \see_opencl_ref{clGetSupportedImageFormats}
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static std::vector<image_format>
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get_supported_formats(const context &context, cl_mem_flags flags = read_write)
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{
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return image_object::get_supported_formats(context, CL_MEM_OBJECT_IMAGE2D, flags);
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}
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/// Returns \c true if \p format is a supported 2D image format for
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/// \p context.
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static bool is_supported_format(const image_format &format,
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const context &context,
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cl_mem_flags flags = read_write)
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{
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return image_object::is_supported_format(
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format, context, CL_MEM_OBJECT_IMAGE2D, flags
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);
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}
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/// Creates a new image with a copy of the data in \c *this. Uses \p queue
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/// to perform the copy operation.
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image2d clone(command_queue &queue) const;
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};
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/// \internal_ define get_info() specializations for image2d
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BOOST_COMPUTE_DETAIL_DEFINE_GET_INFO_SPECIALIZATIONS(image2d,
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((cl_image_format, CL_IMAGE_FORMAT))
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((size_t, CL_IMAGE_ELEMENT_SIZE))
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((size_t, CL_IMAGE_ROW_PITCH))
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((size_t, CL_IMAGE_SLICE_PITCH))
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((size_t, CL_IMAGE_WIDTH))
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((size_t, CL_IMAGE_HEIGHT))
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((size_t, CL_IMAGE_DEPTH))
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)
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namespace detail {
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// set_kernel_arg() specialization for image2d
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template<>
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struct set_kernel_arg<image2d> : public set_kernel_arg<image_object> { };
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} // end detail namespace
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} // end compute namespace
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} // end boost namespace
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BOOST_COMPUTE_TYPE_NAME(boost::compute::image2d, image2d_t)
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#endif // BOOST_COMPUTE_IMAGE_IMAGE2D_HPP
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