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82 lines
3.4 KiB
Common Lisp
82 lines
3.4 KiB
Common Lisp
/*M///////////////////////////////////////////////////////////////////////////////////////
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//
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// IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING.
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//
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// By downloading, copying, installing or using the software you agree to this license.
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// If you do not agree to this license, do not download, install,
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// copy or use the software.
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//
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//
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// License Agreement
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// For Open Source Computer Vision Library
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//
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// Copyright (C) 2017, Intel Corporation, all rights reserved.
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// Copyright (c) 2016-2017 Fabian David Tschopp, all rights reserved.
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// Third party copyrights are property of their respective owners.
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//
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// Redistribution and use in source and binary forms, with or without modification,
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// are permitted provided that the following conditions are met:
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//
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// * Redistribution's of source code must retain the above copyright notice,
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// this list of conditions and the following disclaimer.
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//
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// * Redistribution's in binary form must reproduce the above copyright notice,
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// this list of conditions and the following disclaimer in the documentation
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// and/or other materials provided with the distribution.
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//
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// * The name of the copyright holders may not be used to endorse or promote products
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// derived from this software without specific prior written permission.
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//
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// This software is provided by the copyright holders and contributors "as is" and
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// any express or implied warranties, including, but not limited to, the implied
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// warranties of merchantability and fitness for a particular purpose are disclaimed.
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// In no event shall the Intel Corporation or contributors be liable for any direct,
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// indirect, incidental, special, exemplary, or consequential damages
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// (including, but not limited to, procurement of substitute goods or services;
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// loss of use, data, or profits; or business interruption) however caused
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// and on any theory of liability, whether in contract, strict liability,
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// or tort (including negligence or otherwise) arising in any way out of
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// the use of this software, even if advised of the possibility of such damage.
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//
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//M*/
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#define Dtype float
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#define Dtype4 float4
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#define Dtype8 float8
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__kernel void slice(__global const Dtype* src,
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const int src_plane_size,
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const int dst_plane_size,
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const int src_cols,
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const int dst_cols,
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const int row_offset,
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const int col_offset,
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__global Dtype* dst)
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{
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unsigned int row_gid = get_group_id(0);
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unsigned int lid = get_local_id(0);
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const __global Dtype *src_read = src + row_gid * 4 * src_plane_size;
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__global Dtype *dst_read = dst + row_gid * 4 * dst_plane_size;
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Dtype4 a0, a1, a2, a3;
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int i = lid;
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while( i < dst_plane_size / 4)
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{
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int row = (4 * i) / dst_cols + row_offset;
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int col = (4 * i) % dst_cols + col_offset;
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int src_index = row * src_cols + col;
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a0 = vload4(0, src_read + src_index);
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a1 = vload4(0, src_read + src_index + src_plane_size);
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a2 = vload4(0, src_read + src_index + 2 * src_plane_size);
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a3 = vload4(0, src_read + src_index + 3 * src_plane_size);
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vstore4(a0, i, dst_read);
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vstore4(a1, i, dst_read + dst_plane_size);
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vstore4(a2, i, dst_read + 2 * dst_plane_size);
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vstore4(a3, i, dst_read + 3 * dst_plane_size);
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i += get_local_size(0);
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}
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}
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