recon/OpenGLWindow.cpp at master · bunbun205/recon · GitHub

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
#include "OpenGLWindow.h"

#include <QtCore/QCoreApplication>
#include <QtCore/QDebug>

#include <QtGui/QOpenGLContext>
#include <QtGui/QOpenGLPaintDevice>
#include <QtGui/QPainter>

OpenGLWindow::OpenGLWindow(QWindow *parent) :
	QWindow(parent),
	mContext(nullptr),
	mDebugLogger(nullptr)
{
	setSurfaceType(QWindow::OpenGLSurface);
}


void OpenGLWindow::renderLater() {
	requestUpdate();
}


void OpenGLWindow::renderNow() {
	if (!isExposed())
		return;

	if (mContext == nullptr)
		initOpenGL();

	mContext->makeCurrent(this);

	paintGL();

	mContext->swapBuffers(this);
}


bool OpenGLWindow::event(QEvent *event) {
	switch (event->type()) {
	case QEvent::UpdateRequest:
		renderNow();
		return true;
	default:
		return QWindow::event(event);
	}
}


void OpenGLWindow::exposeEvent(QExposeEvent * /*event*/) {

	renderNow();
}


void OpenGLWindow::resizeEvent(QResizeEvent * event) {
	QWindow::resizeEvent(event);

	if (mContext == nullptr)
		initOpenGL();

	resizeGL(width(), height());
}


void OpenGLWindow::onMessageLogged(const QOpenGLDebugMessage &msg) {
	QString prefix;

	switch (msg.severity()) {
		case QOpenGLDebugMessage::NotificationSeverity:
			prefix += "++++";
		break;
		case QOpenGLDebugMessage::HighSeverity:
			prefix += "+++";
		break;
		case QOpenGLDebugMessage::MediumSeverity:
			prefix += "++";
		break;
		case QOpenGLDebugMessage::LowSeverity:
			prefix += "+";
		break;
	}

	prefix += " [";

#define CASE(c) case QOpenGLDebugMessage::c: prefix += #c; break
	switch (msg.source())
	{
	  CASE(APISource);
	  CASE(WindowSystemSource);
	  CASE(ShaderCompilerSource);
	  CASE(ThirdPartySource);
	  CASE(ApplicationSource);
	  CASE(OtherSource);
	  CASE(InvalidSource);
	}
 #undef CASE

	prefix += ":";

	// Format based on type
 #define CASE(c) case QOpenGLDebugMessage::c: prefix += #c; break
	switch (msg.type())
	{
		CASE(ErrorType);
		CASE(DeprecatedBehaviorType);
		CASE(UndefinedBehaviorType);
		CASE(PortabilityType);
		CASE(PerformanceType);
		CASE(OtherType);
		CASE(MarkerType);
		CASE(GroupPushType);
		CASE(GroupPopType);
	}
#undef CASE

	prefix += "] ";
	qDebug().noquote().nospace() << prefix << msg.message() << "\n";

}


void OpenGLWindow::initOpenGL() {
	Q_ASSERT(mContext == nullptr);

	mContext = new QOpenGLContext(this);
	mContext->setFormat(requestedFormat());
	mContext->create();

	mContext->makeCurrent(this);
	Q_ASSERT(mContext->isValid());

	initializeOpenGLFunctions();

#ifdef GL_DEBUG
	if (mContext->hasExtension(QByteArrayLiteral("GL_KHR_debug")))
		qDebug() << "GL_KHR_debug extension available";
	else
		qWarning() << "GL_KHR_debug extension *not* available";
	mDebugLogger = new QOpenGLDebugLogger(this);
	if (mDebugLogger->initialize()) {
		qDebug() << "Debug Logger initialized\n";
		connect(mDebugLogger, SIGNAL(messageLogged(QOpenGLDebugMessage)), this, SLOT(onMessageLogged(QOpenGLDebugMessage)));
		mDebugLogger->startLogging();
	}
#endif // GL_DEBUG

	initializeGL(); // call user code
}