1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
|
/*
This file is part of darktable,
copyright (c) 2019 philippe weyland.
darktable is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
darktable 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with darktable. If not, see <http://www.gnu.org/licenses/>.
*/
#include "common.h"
kernel void
lut3d_tetrahedral(read_only image2d_t in, write_only image2d_t out, const int width, const int height,
global float *clut, const int level)
{
int4 rgbi = (int4)(0);
float4 rgbd = (float4)(0.0f);
const int level2 = level * level;
const int x = get_global_id(0);
const int y = get_global_id(1);
if(x >= width || y >= height) return;
float4 input = read_imagef(in, sampleri, (int2)(x, y));
float4 output = (float4)(0.0f);
input = clamp(input, (float4)0.0f, (float4)1.0f);
rgbd = input * (float)(level - 1);
rgbi = min( max( convert_int4(rgbd), (int4)0), (int4)(level - 2));
// delta r, g, b
rgbd = rgbd - convert_float4(rgbi);
// indexes of P000 to P111 in clut
const int color = rgbi.x + rgbi.y * level + rgbi.z * level2;
const int i000 = color * 3 ; // P000
const int i100 = i000 + 3; // P100
const int i010 = (int)(color + level) * 3; // P010
const int i110 = i010 + 3; //P110
const int i001 = (int)(color + level2) * 3; // P001
const int i101 = i001 + 3; // P101
const int i011 = (int)(color + level + level2) * 3; // P011
const int i111 = i011 + 3; // P111
// float3 are 16 bytes aligned. So no way to set clut as an array of float3.
const float4 clut000 = (float4)(clut[i000], clut[i000+1], clut[i000+2], 0.0f);
const float4 clut100 = (float4)(clut[i100], clut[i100+1], clut[i100+2], 0.0f);
const float4 clut010 = (float4)(clut[i010], clut[i010+1], clut[i010+2], 0.0f);
const float4 clut110 = (float4)(clut[i110], clut[i110+1], clut[i110+2], 0.0f);
const float4 clut001 = (float4)(clut[i001], clut[i001+1], clut[i001+2], 0.0f);
const float4 clut101 = (float4)(clut[i101], clut[i101+1], clut[i101+2], 0.0f);
const float4 clut011 = (float4)(clut[i011], clut[i011+1], clut[i011+2], 0.0f);
const float4 clut111 = (float4)(clut[i111], clut[i111+1], clut[i111+2], 0.0f);
if (rgbd.x > rgbd.y)
{
if (rgbd.y > rgbd.z)
{
output = (1.0f-rgbd.x)*clut000 + (rgbd.x-rgbd.y)*clut100 + (rgbd.y-rgbd.z)*clut110 + rgbd.z*clut111;
}
else if (rgbd.x > rgbd.z)
{
output = (1.0f-rgbd.x)*clut000 + (rgbd.x-rgbd.z)*clut100 + (rgbd.z-rgbd.y)*clut101 + rgbd.y*clut111;
}
else
{
output = (1.0f-rgbd.z)*clut000 + (rgbd.z-rgbd.x)*clut001 + (rgbd.x-rgbd.y)*clut101 + rgbd.y*clut111;
}
}
else
{
if (rgbd.z > rgbd.y)
{
output = (1.0f-rgbd.z)*clut000 + (rgbd.z-rgbd.y)*clut001 + (rgbd.y-rgbd.x)*clut011 + rgbd.x*clut111;
}
else if (rgbd.z > rgbd.x)
{
output = (1.0f-rgbd.y)*clut000 + (rgbd.y-rgbd.z)*clut010 + (rgbd.z-rgbd.x)*clut011 + rgbd.x*clut111;
}
else
{
output = (1.0f-rgbd.y)*clut000 + (rgbd.y-rgbd.x)*clut010 + (rgbd.x-rgbd.z)*clut110 + rgbd.z*clut111;
}
}
output.w = input.w;
write_imagef(out, (int2)(x, y), output);
}
kernel void
lut3d_trilinear(read_only image2d_t in, write_only image2d_t out, const int width, const int height,
global float *clut, const uint level)
{
int4 rgbi = (int4)(0);
float4 rgbd = (float4)(0.0f);
const int level2 = level * level;
const int x = get_global_id(0);
const int y = get_global_id(1);
float4 tmp1;
float4 tmp2;
if(x >= width || y >= height) return;
float4 input = read_imagef(in, sampleri, (int2)(x, y));
float4 output = (float4)(0.0f);
input = clamp(input, (float4)0.0f, (float4)1.0f);
rgbd = input * (float)(level - 1);
rgbi = min( max( convert_int4(rgbd), (int4)0), (int4)(level - 2));
// delta r, g, b
rgbd = rgbd - convert_float4(rgbi);
// indexes of P000 to P111 in clut
const int color = rgbi.x + rgbi.y * level + rgbi.z * level2;
const int i000 = color * 3 ; // P000
const int i100 = i000 + 3; // P100
const int i010 = (int)(color + level) * 3; // P010
const int i110 = i010 + 3; //P110
const int i001 = (int)(color + level2) * 3; // P001
const int i101 = i001 + 3; // P101
const int i011 = (int)(color + level + level2) * 3; // P011
const int i111 = i011 + 3; // P111
// float3 are 16 bytes aligned. So no way to set clut as an array of float3.
const float4 clut000 = (float4)(clut[i000], clut[i000+1], clut[i000+2], 0.0f);
const float4 clut100 = (float4)(clut[i100], clut[i100+1], clut[i100+2], 0.0f);
const float4 clut010 = (float4)(clut[i010], clut[i010+1], clut[i010+2], 0.0f);
const float4 clut110 = (float4)(clut[i110], clut[i110+1], clut[i110+2], 0.0f);
const float4 clut001 = (float4)(clut[i001], clut[i001+1], clut[i001+2], 0.0f);
const float4 clut101 = (float4)(clut[i101], clut[i101+1], clut[i101+2], 0.0f);
const float4 clut011 = (float4)(clut[i011], clut[i011+1], clut[i011+2], 0.0f);
const float4 clut111 = (float4)(clut[i111], clut[i111+1], clut[i111+2], 0.0f);
tmp1 = clut000*(1.0f-rgbd.x) + clut100*rgbd.x;
tmp2 = clut010*(1.0f-rgbd.x) + clut110*rgbd.x;
output = tmp1*(1.0f-rgbd.y) + tmp2*rgbd.y;
tmp1 = clut001*(1.0f-rgbd.x) + clut101*rgbd.x;
tmp2 = clut011*(1.0f-rgbd.x) + clut111*rgbd.x;
tmp1 = tmp1*(1.0f-rgbd.y) + tmp2*rgbd.y;
output = output*(1.0f-rgbd.z) + tmp1*rgbd.z;
output.w = input.w;
write_imagef(out, (int2)(x, y), output);
}
kernel void
lut3d_pyramid(read_only image2d_t in, write_only image2d_t out, const int width, const int height,
global float *clut, const uint level)
{
int4 rgbi = (int4)(0);
float4 rgbd = (float4)(0.0f);
const int level2 = level * level;
const int x = get_global_id(0);
const int y = get_global_id(1);
if(x >= width || y >= height) return;
float4 input = read_imagef(in, sampleri, (int2)(x, y));
float4 output = (float4)(0.0f);
input = clamp(input, (float4)0.0f, (float4)1.0f);
rgbd = input * (float)(level - 1);
rgbi = min( max( convert_int4(rgbd), (int4)0), (int4)(level - 2));
// delta r, g, b
rgbd = rgbd - convert_float4(rgbi);
// indexes of P000 to P111 in clut
const int color = rgbi.x + rgbi.y * level + rgbi.z * level2;
const int i000 = color * 3 ; // P000
const int i100 = i000 + 3; // P100
const int i010 = (int)(color + level) * 3; // P010
const int i110 = i010 + 3; //P110
const int i001 = (int)(color + level2) * 3; // P001
const int i101 = i001 + 3; // P101
const int i011 = (int)(color + level + level2) * 3; // P011
const int i111 = i011 + 3; // P111
// float3 are 16 bytes aligned. So no way to set clut as an array of float3.
const float4 clut000 = (float4)(clut[i000], clut[i000+1], clut[i000+2], 0.0f);
const float4 clut100 = (float4)(clut[i100], clut[i100+1], clut[i100+2], 0.0f);
const float4 clut010 = (float4)(clut[i010], clut[i010+1], clut[i010+2], 0.0f);
const float4 clut110 = (float4)(clut[i110], clut[i110+1], clut[i110+2], 0.0f);
const float4 clut001 = (float4)(clut[i001], clut[i001+1], clut[i001+2], 0.0f);
const float4 clut101 = (float4)(clut[i101], clut[i101+1], clut[i101+2], 0.0f);
const float4 clut011 = (float4)(clut[i011], clut[i011+1], clut[i011+2], 0.0f);
const float4 clut111 = (float4)(clut[i111], clut[i111+1], clut[i111+2], 0.0f);
if (rgbd.y > rgbd.x && rgbd.z > rgbd.x)
{
output = clut000 + (clut111-clut011)*rgbd.x + (clut010-clut000)*rgbd.y + (clut001-clut000)*rgbd.z
+ (clut011-clut001-clut010+clut000)*rgbd.y*rgbd.z;
}
else if (rgbd.x > rgbd.y && rgbd.z > rgbd.y)
{
output = clut000 + (clut100-clut000)*rgbd.x + (clut111-clut101)*rgbd.y + (clut001-clut000)*rgbd.z
+ (clut101-clut001-clut100+clut000)*rgbd.x*rgbd.z;
}
else
{
output = clut000 + (clut100-clut000)*rgbd.x + (clut010-clut000)*rgbd.y + (clut111-clut110)*rgbd.z
+ (clut110-clut100-clut010+clut000)*rgbd.x*rgbd.y;
}
output.w = input.w;
write_imagef(out, (int2)(x, y), output);
}
kernel void
lut3d_none(read_only image2d_t in, write_only image2d_t out, const int width, const int height)
{
const int x = get_global_id(0);
const int y = get_global_id(1);
if(x >= width || y >= height) return;
float4 input = read_imagef(in, sampleri, (int2)(x, y));
write_imagef(out, (int2)(x, y), input);
}
|
