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/*
* Project: silx: backprojection helper functions
*
* Copyright (C) 2016-2017 European Synchrotron Radiation Facility
* Grenoble, France
*
* Principal authors: P. Paleo
* J. Kieffer (kieffer@esrf.fr)
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use,
* copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following
* conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*/
kernel void mult( global float2* d_sino,
global float2* d_filter,
int num_bins,
int num_projs)
{
int gid0 = get_global_id(0);
int gid1 = get_global_id(1);
if (gid0 < num_bins && gid1 < num_projs)
{
// d_sino[gid1*num_bins+gid0] *= d_filter[gid0];
d_sino[gid1*num_bins+gid0].x *= d_filter[gid0].x;
d_sino[gid1*num_bins+gid0].y *= d_filter[gid0].x;
}
}
// copy only the real part of the valid data to the real array
kernel void cpy2d_c2r(
global float* d_sino,
global float2* d_sino_complex,
int num_bins,
int num_projs,
int fft_size)
{
int gid0 = get_global_id(0);
int gid1 = get_global_id(1);
if (gid0 < num_bins && gid1 < num_projs) {
d_sino[gid1*num_bins+gid0] = d_sino_complex[gid1*fft_size+gid0].x;
}
}
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