/*******************************************************

* Copyright (c) 2014, ArrayFire

* All rights reserved.

*

* This file is distributed under 3-clause BSD license.

* The complete license agreement can be obtained at:

* http://arrayfire.com/licenses/BSD-3-Clause

********************************************************/

#include <err_cpu.hpp>

#include <hist_graphics.hpp>

#include <platform.hpp>

#include <queue.hpp>

namespace cpu {

template<typename T>

void copy_histogram(const Array<T> &data, fg_histogram hist) {

ForgeModule &_ = graphics::forgePlugin();

data.eval();

getQueue().sync();

CheckGL("Begin copy_histogram");

unsigned bytes = 0, buffer = 0;

FG_CHECK(_.fg_get_histogram_vertex_buffer(&buffer, hist));

FG_CHECK(_.fg_get_histogram_vertex_buffer_size(&bytes, hist));

glBindBuffer(GL_ARRAY_BUFFER, buffer);

glBufferSubData(GL_ARRAY_BUFFER, 0, bytes, data.get());

glBindBuffer(GL_ARRAY_BUFFER, 0);

CheckGL("End copy_histogram");

}

#define INSTANTIATE(T) \

template void copy_histogram<T>(const Array<T> &, fg_histogram);

INSTANTIATE(float)

INSTANTIATE(int)

INSTANTIATE(uint)

INSTANTIATE(uchar)

INSTANTIATE(short)

INSTANTIATE(ushort)

} // namespace cpu