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