1 files changed, 68 insertions, 0 deletions
diff --git a/silx/resources/opencl/backproj_helper.cl b/silx/resources/opencl/backproj_helper.cl
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+++ b/silx/resources/opencl/backproj_helper.cl
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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;
+    }
+}
+
+
+
+
+
+
+