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/*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
const sampler_t sampler = CLK_NORMALIZED_COORDS_FALSE |
CLK_FILTER_NEAREST;
__kernel void pad (
__read_only image2d_t src,
__write_only image2d_t dst,
float4 color,
int2 xy)
{
int2 size_src = get_image_dim(src);
int2 loc = (int2)(get_global_id(0), get_global_id(1));
int2 src_pos = (int2)(get_global_id(0) - xy.x, get_global_id(1) - xy.y);
float4 pixel = loc.x >= size_src.x + xy.x ||
loc.y >= size_src.y + xy.y ||
loc.x < xy.x ||
loc.y < xy.y ? color : read_imagef(src, sampler, src_pos);
write_imagef(dst, loc, pixel);
}
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