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
|
/*
* 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 2011, Blender Foundation.
*/
#include "COM_ColorBalanceASCCDLOperation.h"
namespace blender::compositor {
inline float colorbalance_cdl(float in, float offset, float power, float slope)
{
float x = in * slope + offset;
/* prevent NaN */
if (x < 0.0f) {
x = 0.0f;
}
return powf(x, power);
}
ColorBalanceASCCDLOperation::ColorBalanceASCCDLOperation()
{
this->add_input_socket(DataType::Value);
this->add_input_socket(DataType::Color);
this->add_output_socket(DataType::Color);
input_value_operation_ = nullptr;
input_color_operation_ = nullptr;
this->set_canvas_input_index(1);
flags.can_be_constant = true;
}
void ColorBalanceASCCDLOperation::init_execution()
{
input_value_operation_ = this->get_input_socket_reader(0);
input_color_operation_ = this->get_input_socket_reader(1);
}
void ColorBalanceASCCDLOperation::execute_pixel_sampled(float output[4],
float x,
float y,
PixelSampler sampler)
{
float input_color[4];
float value[4];
input_value_operation_->read_sampled(value, x, y, sampler);
input_color_operation_->read_sampled(input_color, x, y, sampler);
float fac = value[0];
fac = MIN2(1.0f, fac);
const float mfac = 1.0f - fac;
output[0] = mfac * input_color[0] +
fac * colorbalance_cdl(input_color[0], offset_[0], power_[0], slope_[0]);
output[1] = mfac * input_color[1] +
fac * colorbalance_cdl(input_color[1], offset_[1], power_[1], slope_[1]);
output[2] = mfac * input_color[2] +
fac * colorbalance_cdl(input_color[2], offset_[2], power_[2], slope_[2]);
output[3] = input_color[3];
}
void ColorBalanceASCCDLOperation::update_memory_buffer_row(PixelCursor &p)
{
for (; p.out < p.row_end; p.next()) {
const float *in_factor = p.ins[0];
const float *in_color = p.ins[1];
const float fac = MIN2(1.0f, in_factor[0]);
const float fac_m = 1.0f - fac;
p.out[0] = fac_m * in_color[0] +
fac * colorbalance_cdl(in_color[0], offset_[0], power_[0], slope_[0]);
p.out[1] = fac_m * in_color[1] +
fac * colorbalance_cdl(in_color[1], offset_[1], power_[1], slope_[1]);
p.out[2] = fac_m * in_color[2] +
fac * colorbalance_cdl(in_color[2], offset_[2], power_[2], slope_[2]);
p.out[3] = in_color[3];
}
}
void ColorBalanceASCCDLOperation::deinit_execution()
{
input_value_operation_ = nullptr;
input_color_operation_ = nullptr;
}
} // namespace blender::compositor
|
