Forge
OpenCLCopy.hpp
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1 /*******************************************************
2  * Copyright (c) 2015-2019, ArrayFire
3  * All rights reserved.
4  *
5  * This file is distributed under 3-clause BSD license.
6  * The complete license agreement can be obtained at:
7  * http://arrayfire.com/licenses/BSD-3-Clause
8  ********************************************************/
9 
10 #ifndef __OPENCL_DATA_COPY_H__
11 #define __OPENCL_DATA_COPY_H__
12 
13 namespace fg
14 {
15 
16 static void copy(fg::Image& out, const cl::Buffer& in, const cl::CommandQueue& queue)
17 {
18  cl::BufferGL pboMapBuffer(queue.getInfo<CL_QUEUE_CONTEXT>(), CL_MEM_WRITE_ONLY, out.pbo(), NULL);
19 
20  std::vector<cl::Memory> shared_objects;
21  shared_objects.push_back(pboMapBuffer);
22 
23  glFinish();
24  queue.enqueueAcquireGLObjects(&shared_objects);
25  queue.enqueueCopyBuffer(in, pboMapBuffer, 0, 0, out.size(), NULL, NULL);
26  queue.finish();
27  queue.enqueueReleaseGLObjects(&shared_objects);
28 }
29 
30 /*
31  * Below functions takes any renderable forge object that has following member functions
32  * defined
33  *
34  * `unsigned Renderable::vbo() const;`
35  * `unsigned Renderable::size() const;`
36  *
37  * Currently fg::Plot, fg::Histogram objects in Forge library fit the bill
38  */
39 template<class Renderable>
40 void copy(Renderable& out, const cl::Buffer& in, const cl::CommandQueue& queue)
41 {
42  cl::BufferGL vboMapBuffer(queue.getInfo<CL_QUEUE_CONTEXT>(), CL_MEM_WRITE_ONLY, out.vbo(), NULL);
43 
44  std::vector<cl::Memory> shared_objects;
45  shared_objects.push_back(vboMapBuffer);
46 
47  glFinish();
48  queue.enqueueAcquireGLObjects(&shared_objects);
49  queue.enqueueCopyBuffer(in, vboMapBuffer, 0, 0, out.size(), NULL, NULL);
50  queue.finish();
51  queue.enqueueReleaseGLObjects(&shared_objects);
52 }
53 
54 }
55 
56 #endif //__OPENCL_DATA_COPY_H__
FGAPI unsigned size() const
Get the OpenGL Pixel Buffer Object resource size.
Definition: CPUCopy.hpp:13
void copy(fg::Image &out, const T *dataPtr)
Definition: CPUCopy.hpp:17
FGAPI unsigned pbo() const
Get the OpenGL Pixel Buffer Object identifier.
Definition: image.h:25