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/*
* Copyright (C) 2011-2013 Karlsruhe Institute of Technology
*
* This file is part of Ufo.
*
* This library 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 3 of the License, or (at your option) any later version.
*
* This library 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 this library. If not, see <http://www.gnu.org/licenses/>.
*/
constant sampler_t volumeSampler = CLK_NORMALIZED_COORDS_FALSE |
CLK_ADDRESS_CLAMP |
CLK_FILTER_NEAREST;
kernel void
interleave_single ( global float *slices,
write_only image2d_array_t interleaved_slices)
{
const int idx = get_global_id(0);
const int idy = get_global_id(1);
const int idz = get_global_id(2);
const int sizex = get_global_size(0);
const int sizey = get_global_size(1);
int slice_offset = idz*2;
float x = slices[idx + idy * sizex + (slice_offset) * sizex * sizey];
float y = slices[idx + idy * sizex + (slice_offset+1) * sizex * sizey];
write_imagef(interleaved_slices, (int4)(idx, idy, idz, 0),(float4)(x,y,0.0f,0.0f));
}
kernel void
texture_single (
read_only image2d_array_t slices,
global float2 *reconstructed_buffer,
float axis_pos,
float angle_step,
unsigned long size){
const int idx = get_global_id(0);
const int idy = get_global_id(1);
const int idz = get_global_id(2);
float angle = idy * angle_step;
float r = fmin (axis_pos, size - axis_pos);
float d = idx - axis_pos + 0.5f;
float l = sqrt(8.0f*r*r - 4.0f*d*d);
float2 D = (float2) (cos(angle), -sin(angle));
D = normalize(D);
float2 N = (float2) (D.y, -D.x);
float2 sample = d * D - l/2.0f * N + ((float2) (axis_pos, axis_pos));
float2 sum = {0.0f,0.0f};
for (int i = 0; i < l; i++) {
sum += read_imagef(slices, volumeSampler, (float4)((float2)sample,idz,0.0f)).xy;
sample += N;
}
reconstructed_buffer[idx + idy*size + idz*size*size] = sum;
}
kernel void
uninterleave_single (global float2 *reconstructed_buffer,
global float *output)
{
const int idx = get_global_id(0);
const int idy = get_global_id(1);
const int idz = get_global_id(2);
const int sizex = get_global_size(0);
const int sizey = get_global_size(1);
int output_offset = idz*2;
output[idx + idy*sizex + (output_offset)*sizex*sizey] = reconstructed_buffer[idx + idy*sizex + idz*sizex*sizey].x;
output[idx + idy*sizex + (output_offset+1)*sizex*sizey] = reconstructed_buffer[idx + idy*sizex + idz*sizex*sizey].y;
}
kernel void
interleave_half ( global float *slices,
write_only image2d_array_t interleaved_slices)
{
const int idx = get_global_id(0);
const int idy = get_global_id(1);
const int idz = get_global_id(2);
const int sizex = get_global_size(0);
const int sizey = get_global_size(1);
int slice_offset = idz*4;
float4 b = {slices[idx + idy * sizex + (slice_offset) * sizex * sizey],
slices[idx + idy * sizex + (slice_offset+1) * sizex * sizey],
slices[idx + idy * sizex + (slice_offset+2) * sizex * sizey],
slices[idx + idy * sizex + (slice_offset+3) * sizex * sizey]};
write_imagef(interleaved_slices, (int4)(idx, idy, idz, 0),(float4)(b));
}
kernel void
texture_half (
read_only image2d_array_t slices,
global float4 *reconstructed_buffer,
float axis_pos,
float angle_step,
unsigned long size){
const int idx = get_global_id(0);
const int idy = get_global_id(1);
const int idz = get_global_id(2);
float angle = idy * angle_step;
float r = fmin (axis_pos, size - axis_pos);
float d = idx - axis_pos + 0.5f;
float l = sqrt(8.0f*r*r - 4.0f*d*d);
float2 D = (float2) (cos(angle), -sin(angle));
D = normalize(D);
float2 N = (float2) (D.y, -D.x);
float2 sample = d * D - l/2.0f * N + ((float2) (axis_pos, axis_pos));
float4 sum = {0.0f,0.0f,0.0f,0.0f};
for (int i = 0; i < l; i++) {
sum += read_imagef(slices, volumeSampler, (float4)((float2)sample,idz,0.0f));
sample += N;
}
reconstructed_buffer[idx + idy*size + idz*size*size] = sum;
}
kernel void
uninterleave_half (global float4 *reconstructed_buffer,
global float *output)
{
const int idx = get_global_id(0);
const int idy = get_global_id(1);
const int idz = get_global_id(2);
const int sizex = get_global_size(0);
const int sizey = get_global_size(1);
int output_offset = idz*4;
output[idx + idy*sizex + (output_offset)*sizex*sizey] = reconstructed_buffer[idx + idy*sizex + idz*sizex*sizey].x;
output[idx + idy*sizex + (output_offset+1)*sizex*sizey] = reconstructed_buffer[idx + idy*sizex + idz*sizex*sizey].y;
output[idx + idy*sizex + (output_offset+2)*sizex*sizey] = reconstructed_buffer[idx + idy*sizex + idz*sizex*sizey].z;
output[idx + idy*sizex + (output_offset+3)*sizex*sizey] = reconstructed_buffer[idx + idy*sizex + idz*sizex*sizey].w;
}
union converter {
uint2 storage;
uchar8 a;
};
kernel void
interleave_uint ( global float *slices,
write_only image2d_array_t interleaved_slices,
const float min,
const float max)
{
const int idx = get_global_id(0);
const int idy = get_global_id(1);
const int idz = get_global_id(2);
const int sizex = get_global_size(0);
const int sizey = get_global_size(1);
int slice_offset = idz*8;
const float scale = 255.0f / (max - min);
union converter il;
il.a.s0 = (slices[idx + idy * sizex + (slice_offset) * sizex * sizey] - min)*scale;
il.a.s1 = (slices[idx + idy * sizex + (slice_offset+1) * sizex * sizey] - min)*scale;
il.a.s2 = (slices[idx + idy * sizex + (slice_offset+2) * sizex * sizey] - min)*scale;
il.a.s3 = (slices[idx + idy * sizex + (slice_offset+3) * sizex * sizey] - min)*scale;
il.a.s4 = (slices[idx + idy * sizex + (slice_offset+4) * sizex * sizey] - min)*scale;
il.a.s5 = (slices[idx + idy * sizex + (slice_offset+5) * sizex * sizey] - min)*scale;
il.a.s6 = (slices[idx + idy * sizex + (slice_offset+6) * sizex * sizey] - min)*scale;
il.a.s7 = (slices[idx + idy * sizex + (slice_offset+7) * sizex * sizey] - min)*scale;
write_imageui(interleaved_slices, (int4)(idx, idy, idz, 0),(uint4)((uint)il.storage.x,(uint)il.storage.y,0,0));
}
kernel void
texture_uint (
read_only image2d_array_t slices,
global uint8 *reconstructed_buffer,
float axis_pos,
float angle_step,
unsigned long size){
const int idx = get_global_id(0);
const int idy = get_global_id(1);
const int idz = get_global_id(2);
float angle = idy * angle_step;
float r = fmin (axis_pos, size - axis_pos);
float d = idx - axis_pos + 0.5f;
float l = sqrt(8.0f*r*r - 4.0f*d*d);
float2 D = (float2) (cos(angle), -sin(angle));
D = normalize(D);
float2 N = (float2) (D.y, -D.x);
float2 sample = d * D - l/2.0f * N + ((float2) (axis_pos, axis_pos));
uint8 sum = {0,0,0,0,0,0,0,0};
union converter tex;
for (int i = 0; i < l; i++) {
tex.storage = read_imageui(slices, volumeSampler, (float4)((float2)sample,idz,0.0f)).xy;
sum.s0 += (uint)tex.a.s0;
sum.s1 += (uint)tex.a.s1;
sum.s2 += (uint)tex.a.s2;
sum.s3 += (uint)tex.a.s3;
sum.s4 += (uint)tex.a.s4;
sum.s5 += (uint)tex.a.s5;
sum.s6 += (uint)tex.a.s6;
sum.s7 += (uint)tex.a.s7;
sample += N;
}
reconstructed_buffer[idx + idy*size + idz*size*size] = sum;
}
kernel void
uninterleave_uint (global uint8 *reconstructed_buffer,
global float *output,
const float min,
const float max)
{
const int idx = get_global_id(0);
const int idy = get_global_id(1);
const int idz = get_global_id(2);
const int sizex = get_global_size(0);
const int sizey = get_global_size(1);
int output_offset = idz*8;
float scale = (max-min)/255.0f;
output[idx + idy*sizex + (output_offset)*sizex*sizey] = (reconstructed_buffer[idx + idy*sizex + idz*sizex*sizey].s0)*scale+min;
output[idx + idy*sizex + (output_offset+1)*sizex*sizey] = (reconstructed_buffer[idx + idy*sizex + idz*sizex*sizey].s1)*scale+min;
output[idx + idy*sizex + (output_offset+2)*sizex*sizey] = (reconstructed_buffer[idx + idy*sizex + idz*sizex*sizey].s2)*scale+min;
output[idx + idy*sizex + (output_offset+3)*sizex*sizey] = (reconstructed_buffer[idx + idy*sizex + idz*sizex*sizey].s3)*scale+min;
output[idx + idy*sizex + (output_offset+4)*sizex*sizey] = (reconstructed_buffer[idx + idy*sizex + idz*sizex*sizey].s4)*scale+min;
output[idx + idy*sizex + (output_offset+5)*sizex*sizey] = (reconstructed_buffer[idx + idy*sizex + idz*sizex*sizey].s5)*scale+min;
output[idx + idy*sizex + (output_offset+6)*sizex*sizey] = (reconstructed_buffer[idx + idy*sizex + idz*sizex*sizey].s6)*scale+min;
output[idx + idy*sizex + (output_offset+7)*sizex*sizey] = (reconstructed_buffer[idx + idy*sizex + idz*sizex*sizey].s7)*scale+min;
}
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