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
|
// Copyright (c) 2018, ETH Zurich and UNC Chapel Hill.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//
// * Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
//
// * Neither the name of ETH Zurich and UNC Chapel Hill nor the names of
// its contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
//
// Author: Johannes L. Schoenberger (jsch at inf.ethz.ch)
#include "util/opengl_utils.h"
#include <QApplication>
#include "util/logging.h"
namespace colmap {
OpenGLContextManager::OpenGLContextManager()
: parent_thread_(QThread::currentThread()),
current_thread_(nullptr),
make_current_action_(new QAction(this)) {
CHECK_NOTNULL(QCoreApplication::instance());
CHECK_EQ(QCoreApplication::instance()->thread(), QThread::currentThread());
QSurfaceFormat format;
format.setDepthBufferSize(24);
format.setMajorVersion(3);
format.setMinorVersion(2);
format.setSamples(4);
format.setProfile(QSurfaceFormat::CompatibilityProfile);
context_.setFormat(format);
surface_.create();
CHECK(context_.create());
context_.makeCurrent(&surface_);
CHECK(context_.isValid()) << "Could not create valid OpenGL context";
connect(make_current_action_, &QAction::triggered, this,
[this]() {
CHECK_NOTNULL(current_thread_);
context_.doneCurrent();
context_.moveToThread(current_thread_);
},
Qt::BlockingQueuedConnection);
}
void OpenGLContextManager::MakeCurrent() {
current_thread_ = QThread::currentThread();
make_current_action_->trigger();
context_.makeCurrent(&surface_);
CHECK(context_.isValid()) << "Could not make current valid OpenGL context";
}
bool OpenGLContextManager::HasOpenGL() {
#ifdef OPENGL_ENABLED
QOffscreenSurface surface;
QOpenGLContext context;
surface.create();
context.create();
return surface.isValid() && context.isValid();
#else // OPENGL_ENABLED
return false;
#endif // OPENGL_ENABLED
}
void RunThreadWithOpenGLContext(Thread* thread) {
std::thread opengl_thread([thread]() {
thread->Start();
thread->Wait();
CHECK_NOTNULL(QCoreApplication::instance())->exit();
});
CHECK_NOTNULL(QCoreApplication::instance())->exec();
opengl_thread.join();
// Make sure that all triggered OpenGLContextManager events are processed in
// case the application exits before the contexts were made current.
QCoreApplication::processEvents();
}
void GLError(const char* file, const int line) {
GLenum error_code(glGetError());
while (error_code != GL_NO_ERROR) {
std::string error_name;
switch (error_code) {
case GL_INVALID_OPERATION:
error_name = "INVALID_OPERATION";
break;
case GL_INVALID_ENUM:
error_name = "INVALID_ENUM";
break;
case GL_INVALID_VALUE:
error_name = "INVALID_VALUE";
break;
case GL_OUT_OF_MEMORY:
error_name = "OUT_OF_MEMORY";
break;
case GL_INVALID_FRAMEBUFFER_OPERATION:
error_name = "INVALID_FRAMEBUFFER_OPERATION";
break;
default:
error_name = "UNKNOWN_ERROR";
break;
}
fprintf(stderr, "OpenGL error [%s, line %i]: GL_%s", file, line,
error_name.c_str());
error_code = glGetError();
}
}
} // namespace colmap
|