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static const char* gblur_1d_cl_source =
"/* This file is an image processing operation for GEGL \n"
" * \n"
" * GEGL is free software; you can redistribute it and/or \n"
" * modify it under the terms of the GNU Lesser General Public \n"
" * License as published by the Free Software Foundation; either \n"
" * version 3 of the License, or (at your option) any later version. \n"
" * \n"
" * GEGL is distributed in the hope that it will be useful, \n"
" * but WITHOUT ANY WARRANTY; without even the implied warranty of \n"
" * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU \n"
" * Lesser General Public License for more details. \n"
" * \n"
" * You should have received a copy of the GNU Lesser General Public \n"
" * License along with GEGL; if not, see <http://www.gnu.org/licenses/>. \n"
" * \n"
" * Copyright 2013 Victor Oliveira <victormatheus@gmail.com> \n"
" * Copyright 2013 T\303\251o Mazars <teomazars@gmail.com> \n"
" */ \n"
" \n"
"__kernel void fir_ver_blur(const global float4 *src_buf, \n"
" global float4 *dst_buf, \n"
" const global float *cmatrix, \n"
" const int clen) \n"
"{ \n"
" const int gidx = get_global_id (0); \n"
" const int gidy = get_global_id (1); \n"
" const int src_rowstride = get_global_size (0); \n"
" const int dst_rowstride = get_global_size (0); \n"
" \n"
" const int half_clen = clen / 2; \n"
" \n"
" const int src_offset = gidx + (gidy + half_clen) * src_rowstride; \n"
" const int dst_offset = gidx + gidy * dst_rowstride; \n"
" \n"
" const int src_start_ind = src_offset - half_clen * src_rowstride; \n"
" \n"
" float4 v = 0.0f; \n"
" \n"
" for (int i = 0; i < clen; i++) \n"
" { \n"
" v += src_buf[src_start_ind + i * src_rowstride] * cmatrix[i]; \n"
" } \n"
" \n"
" dst_buf[dst_offset] = v; \n"
"} \n"
" \n"
" \n"
"__kernel void fir_hor_blur(const global float4 *src_buf, \n"
" global float4 *dst_buf, \n"
" const global float *cmatrix, \n"
" const int clen) \n"
"{ \n"
" const int gidx = get_global_id (0); \n"
" const int gidy = get_global_id (1); \n"
" const int src_rowstride = get_global_size (0) + clen - 1; /*== 2*(clen/2) */\n"
" const int dst_rowstride = get_global_size (0); \n"
" \n"
" const int half_clen = clen / 2; \n"
" \n"
" const int src_offset = gidx + gidy * src_rowstride + half_clen; \n"
" const int dst_offset = gidx + gidy * dst_rowstride; \n"
" \n"
" const int src_start_ind = src_offset - half_clen; \n"
" \n"
" float4 v = 0.0f; \n"
" \n"
" for (int i = 0; i < clen; i++) \n"
" { \n"
" v += src_buf[src_start_ind + i] * cmatrix[i]; \n"
" } \n"
" \n"
" dst_buf[dst_offset] = v; \n"
"} \n"
;
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