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1 | //---------------------------------------------------------------------------// |
2 | // Copyright (c) 2013-2014 Kyle Lutz <kyle.r.lutz@gmail.com> | |
3 | // | |
4 | // Distributed under the Boost Software License, Version 1.0 | |
5 | // See accompanying file LICENSE_1_0.txt or copy at | |
6 | // http://www.boost.org/LICENSE_1_0.txt | |
7 | // | |
8 | // See http://boostorg.github.com/compute for more information. | |
9 | //---------------------------------------------------------------------------// | |
10 | ||
11 | #ifndef BOOST_COMPUTE_INTEROP_OPENGL_OPENGL_BUFFER_HPP | |
12 | #define BOOST_COMPUTE_INTEROP_OPENGL_OPENGL_BUFFER_HPP | |
13 | ||
14 | #include <boost/compute/buffer.hpp> | |
15 | #include <boost/compute/interop/opengl/gl.hpp> | |
16 | #include <boost/compute/interop/opengl/cl_gl.hpp> | |
17 | ||
18 | namespace boost { | |
19 | namespace compute { | |
20 | ||
21 | /// \class opengl_buffer | |
22 | /// | |
23 | /// A OpenCL buffer for accessing an OpenGL memory object. | |
24 | class opengl_buffer : public buffer | |
25 | { | |
26 | public: | |
27 | /// Creates a null OpenGL buffer object. | |
28 | opengl_buffer() | |
29 | : buffer() | |
30 | { | |
31 | } | |
32 | ||
33 | /// Creates a new OpenGL buffer object for \p mem. | |
34 | explicit opengl_buffer(cl_mem mem, bool retain = true) | |
35 | : buffer(mem, retain) | |
36 | { | |
37 | } | |
38 | ||
39 | /// Creates a new OpenGL buffer object in \p context for \p bufobj | |
40 | /// with \p flags. | |
41 | /// | |
42 | /// \see_opencl_ref{clCreateFromGLBuffer} | |
43 | opengl_buffer(const context &context, | |
44 | GLuint bufobj, | |
45 | cl_mem_flags flags = read_write) | |
46 | { | |
47 | cl_int error = 0; | |
48 | m_mem = clCreateFromGLBuffer(context, flags, bufobj, &error); | |
49 | if(!m_mem){ | |
50 | BOOST_THROW_EXCEPTION(opencl_error(error)); | |
51 | } | |
52 | } | |
53 | ||
54 | /// Creates a new OpenGL buffer object as a copy of \p other. | |
55 | opengl_buffer(const opengl_buffer &other) | |
56 | : buffer(other) | |
57 | { | |
58 | } | |
59 | ||
60 | /// Copies the OpenGL buffer object from \p other. | |
61 | opengl_buffer& operator=(const opengl_buffer &other) | |
62 | { | |
63 | if(this != &other){ | |
64 | buffer::operator=(other); | |
65 | } | |
66 | ||
67 | return *this; | |
68 | } | |
69 | ||
70 | /// Destroys the OpenGL buffer object. | |
71 | ~opengl_buffer() | |
72 | { | |
73 | } | |
74 | ||
75 | /// Returns the OpenGL memory object ID. | |
76 | /// | |
77 | /// \see_opencl_ref{clGetGLObjectInfo} | |
78 | GLuint get_opengl_object() const | |
79 | { | |
80 | GLuint object = 0; | |
81 | clGetGLObjectInfo(m_mem, 0, &object); | |
82 | return object; | |
83 | } | |
84 | ||
85 | /// Returns the OpenGL memory object type. | |
86 | /// | |
87 | /// \see_opencl_ref{clGetGLObjectInfo} | |
88 | cl_gl_object_type get_opengl_type() const | |
89 | { | |
90 | cl_gl_object_type type; | |
91 | clGetGLObjectInfo(m_mem, &type, 0); | |
92 | return type; | |
93 | } | |
94 | }; | |
95 | ||
96 | namespace detail { | |
97 | ||
98 | // set_kernel_arg specialization for opengl_buffer | |
99 | template<> | |
100 | struct set_kernel_arg<opengl_buffer> : set_kernel_arg<memory_object> { }; | |
101 | ||
102 | } // end detail namespace | |
103 | } // end compute namespace | |
104 | } // end boost namespace | |
105 | ||
106 | #endif // BOOST_COMPUTE_INTEROP_OPENGL_OPENGL_BUFFER_HPP |