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
|
/*
* 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_ProjectorLensDistortionOperation.h"
#include "COM_ConstantOperation.h"
namespace blender::compositor {
ProjectorLensDistortionOperation::ProjectorLensDistortionOperation()
{
this->add_input_socket(DataType::Color);
this->add_input_socket(DataType::Value);
this->add_output_socket(DataType::Color);
this->flags.complex = true;
input_program_ = nullptr;
dispersion_available_ = false;
dispersion_ = 0.0f;
}
void ProjectorLensDistortionOperation::init_data()
{
if (execution_model_ == eExecutionModel::FullFrame) {
NodeOperation *dispersion_input = get_input_operation(1);
if (dispersion_input->get_flags().is_constant_operation) {
dispersion_ = static_cast<ConstantOperation *>(dispersion_input)->get_constant_elem()[0];
}
kr_ = 0.25f * max_ff(min_ff(dispersion_, 1.0f), 0.0f);
kr2_ = kr_ * 20;
}
}
void ProjectorLensDistortionOperation::init_execution()
{
this->init_mutex();
input_program_ = this->get_input_socket_reader(0);
}
void *ProjectorLensDistortionOperation::initialize_tile_data(rcti * /*rect*/)
{
update_dispersion();
void *buffer = input_program_->initialize_tile_data(nullptr);
return buffer;
}
void ProjectorLensDistortionOperation::execute_pixel(float output[4], int x, int y, void *data)
{
float input_value[4];
const float height = this->get_height();
const float width = this->get_width();
const float v = (y + 0.5f) / height;
const float u = (x + 0.5f) / width;
MemoryBuffer *input_buffer = (MemoryBuffer *)data;
input_buffer->read_bilinear(input_value, (u * width + kr2_) - 0.5f, v * height - 0.5f);
output[0] = input_value[0];
input_buffer->read(input_value, x, y);
output[1] = input_value[1];
input_buffer->read_bilinear(input_value, (u * width - kr2_) - 0.5f, v * height - 0.5f);
output[2] = input_value[2];
output[3] = 1.0f;
}
void ProjectorLensDistortionOperation::deinit_execution()
{
this->deinit_mutex();
input_program_ = nullptr;
}
bool ProjectorLensDistortionOperation::determine_depending_area_of_interest(
rcti *input, ReadBufferOperation *read_operation, rcti *output)
{
rcti new_input;
if (dispersion_available_) {
new_input.ymax = input->ymax;
new_input.ymin = input->ymin;
new_input.xmin = input->xmin - kr2_ - 2;
new_input.xmax = input->xmax + kr2_ + 2;
}
else {
rcti disp_input;
BLI_rcti_init(&disp_input, 0, 5, 0, 5);
if (this->get_input_operation(1)->determine_depending_area_of_interest(
&disp_input, read_operation, output)) {
return true;
}
new_input.xmin = input->xmin - 7; /* (0.25f * 20 * 1) + 2 == worse case dispersion */
new_input.ymin = input->ymin;
new_input.ymax = input->ymax;
new_input.xmax = input->xmax + 7; /* (0.25f * 20 * 1) + 2 == worse case dispersion */
}
if (this->get_input_operation(0)->determine_depending_area_of_interest(
&new_input, read_operation, output)) {
return true;
}
return false;
}
/* TODO(manzanilla): to be removed with tiled implementation. */
void ProjectorLensDistortionOperation::update_dispersion()
{
if (dispersion_available_) {
return;
}
this->lock_mutex();
if (!dispersion_available_) {
float result[4];
this->get_input_socket_reader(1)->read_sampled(result, 1, 1, PixelSampler::Nearest);
dispersion_ = result[0];
kr_ = 0.25f * max_ff(min_ff(dispersion_, 1.0f), 0.0f);
kr2_ = kr_ * 20;
dispersion_available_ = true;
}
this->unlock_mutex();
}
void ProjectorLensDistortionOperation::determine_canvas(const rcti &preferred_area, rcti &r_area)
{
switch (execution_model_) {
case eExecutionModel::FullFrame: {
set_determined_canvas_modifier([=](rcti &canvas) {
/* Ensure screen space. */
BLI_rcti_translate(&canvas, -canvas.xmin, -canvas.ymin);
});
break;
}
default:
break;
}
NodeOperation::determine_canvas(preferred_area, r_area);
}
void ProjectorLensDistortionOperation::get_area_of_interest(const int input_idx,
const rcti &output_area,
rcti &r_input_area)
{
if (input_idx == 1) {
/* Dispersion input is used as constant only. */
r_input_area = COM_CONSTANT_INPUT_AREA_OF_INTEREST;
return;
}
r_input_area.ymax = output_area.ymax;
r_input_area.ymin = output_area.ymin;
r_input_area.xmin = output_area.xmin - kr2_ - 2;
r_input_area.xmax = output_area.xmax + kr2_ + 2;
}
void ProjectorLensDistortionOperation::update_memory_buffer_partial(MemoryBuffer *output,
const rcti &area,
Span<MemoryBuffer *> inputs)
{
const MemoryBuffer *input_image = inputs[0];
const float height = this->get_height();
const float width = this->get_width();
float color[4];
for (BuffersIterator<float> it = output->iterate_with({}, area); !it.is_end(); ++it) {
const float v = (it.y + 0.5f) / height;
const float u = (it.x + 0.5f) / width;
input_image->read_elem_bilinear((u * width + kr2_) - 0.5f, v * height - 0.5f, color);
it.out[0] = color[0];
input_image->read_elem(it.x, it.y, color);
it.out[1] = color[1];
input_image->read_elem_bilinear((u * width - kr2_) - 0.5f, v * height - 0.5f, color);
it.out[2] = color[2];
it.out[3] = 1.0f;
}
}
} // namespace blender::compositor
|
