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
|
/*
* This program 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 2
* of the License, or (at your option) any later version.
*
* This program 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 this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* Copyright 2012, Blender Foundation.
*/
#include "COM_MapRangeOperation.h"
namespace blender::compositor {
MapRangeOperation::MapRangeOperation()
{
this->add_input_socket(DataType::Value);
this->add_input_socket(DataType::Value);
this->add_input_socket(DataType::Value);
this->add_input_socket(DataType::Value);
this->add_input_socket(DataType::Value);
this->add_output_socket(DataType::Value);
input_operation_ = nullptr;
use_clamp_ = false;
flags.can_be_constant = true;
}
void MapRangeOperation::init_execution()
{
input_operation_ = this->get_input_socket_reader(0);
source_min_operation_ = this->get_input_socket_reader(1);
source_max_operation_ = this->get_input_socket_reader(2);
dest_min_operation_ = this->get_input_socket_reader(3);
dest_max_operation_ = this->get_input_socket_reader(4);
}
/* The code below assumes all data is inside range +- this, and that input buffer is single channel
*/
#define BLENDER_ZMAX 10000.0f
void MapRangeOperation::execute_pixel_sampled(float output[4],
float x,
float y,
PixelSampler sampler)
{
float inputs[8]; /* includes the 5 inputs + 3 pads */
float value;
float source_min, source_max;
float dest_min, dest_max;
input_operation_->read_sampled(inputs, x, y, sampler);
source_min_operation_->read_sampled(inputs + 1, x, y, sampler);
source_max_operation_->read_sampled(inputs + 2, x, y, sampler);
dest_min_operation_->read_sampled(inputs + 3, x, y, sampler);
dest_max_operation_->read_sampled(inputs + 4, x, y, sampler);
value = inputs[0];
source_min = inputs[1];
source_max = inputs[2];
dest_min = inputs[3];
dest_max = inputs[4];
if (fabsf(source_max - source_min) < 1e-6f) {
output[0] = 0.0f;
return;
}
if (value >= -BLENDER_ZMAX && value <= BLENDER_ZMAX) {
value = (value - source_min) / (source_max - source_min);
value = dest_min + value * (dest_max - dest_min);
}
else if (value > BLENDER_ZMAX) {
value = dest_max;
}
else {
value = dest_min;
}
if (use_clamp_) {
if (dest_max > dest_min) {
CLAMP(value, dest_min, dest_max);
}
else {
CLAMP(value, dest_max, dest_min);
}
}
output[0] = value;
}
void MapRangeOperation::deinit_execution()
{
input_operation_ = nullptr;
source_min_operation_ = nullptr;
source_max_operation_ = nullptr;
dest_min_operation_ = nullptr;
dest_max_operation_ = nullptr;
}
void MapRangeOperation::update_memory_buffer_partial(MemoryBuffer *output,
const rcti &area,
Span<MemoryBuffer *> inputs)
{
for (BuffersIterator<float> it = output->iterate_with(inputs, area); !it.is_end(); ++it) {
const float source_min = *it.in(1);
const float source_max = *it.in(2);
if (fabsf(source_max - source_min) < 1e-6f) {
it.out[0] = 0.0f;
continue;
}
float value = *it.in(0);
const float dest_min = *it.in(3);
const float dest_max = *it.in(4);
if (value >= -BLENDER_ZMAX && value <= BLENDER_ZMAX) {
value = (value - source_min) / (source_max - source_min);
value = dest_min + value * (dest_max - dest_min);
}
else if (value > BLENDER_ZMAX) {
value = dest_max;
}
else {
value = dest_min;
}
if (use_clamp_) {
if (dest_max > dest_min) {
CLAMP(value, dest_min, dest_max);
}
else {
CLAMP(value, dest_max, dest_min);
}
}
it.out[0] = value;
}
}
} // namespace blender::compositor
|
