qplatformopenglcontext.cpp

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32****************************************************************************/-
33-
34#include "qplatformopenglcontext.h"-
35-
36#include <QOpenGLFunctions>-
37-
38QT_BEGIN_NAMESPACE-
39-
40/*!-
41 \class QPlatformOpenGLContext-
42 \since 4.8-
43 \internal-
44 \preliminary-
45 \ingroup qpa-
46-
47 \brief The QPlatformOpenGLContext class provides an abstraction for native GL contexts.-
48-
49 In QPA the way to support OpenGL or OpenVG or other technologies that requires a native GL-
50 context is through the QPlatformOpenGLContext wrapper.-
51-
52 There is no factory function for QPlatformOpenGLContexts, but rather only one accessor function.-
53 The only place to retrieve a QPlatformOpenGLContext from is through a QPlatformWindow.-
54-
55 The context which is current for a specific thread can be collected by the currentContext()-
56 function. This is how QPlatformOpenGLContext also makes it possible to use the Qt GUI module-
57 withhout using QOpenGLWidget. When using QOpenGLContext::currentContext(), it will ask-
58 QPlatformOpenGLContext for the currentContext. Then a corresponding QOpenGLContext will be returned,-
59 which maps to the QPlatformOpenGLContext.-
60*/-
61-
62/*! \fn void QPlatformOpenGLContext::swapBuffers(QPlatformSurface *surface)-
63 Reimplement in subclass to native swap buffers calls-
64-
65 The implementation must support being called in a thread different than the gui-thread.-
66*/-
67-
68/*! \fn QFunctionPointer QPlatformOpenGLContext::getProcAddress(const QByteArray &procName)-
69 Reimplement in subclass to native getProcAddr calls.-
70-
71 Note: its convenient to use qPrintable(const QString &str) to get the const char * pointer-
72*/-
73-
74class QPlatformOpenGLContextPrivate-
75{-
76public:-
77 QPlatformOpenGLContextPrivate() : context(0) {}
never executed: end of block
0
78-
79 QOpenGLContext *context;-
80};-
81-
82QPlatformOpenGLContext::QPlatformOpenGLContext()-
83 : d_ptr(new QPlatformOpenGLContextPrivate)-
84{-
85}
never executed: end of block
0
86-
87QPlatformOpenGLContext::~QPlatformOpenGLContext()-
88{-
89}-
90-
91/*!-
92 Called after a new instance is constructed. The default implementation does nothing.-
93-
94 Subclasses can use this function to perform additional initialization that relies on-
95 virtual functions.-
96 */-
97void QPlatformOpenGLContext::initialize()-
98{-
99}-
100-
101/*!-
102 Reimplement in subclass if your platform uses framebuffer objects for surfaces.-
103-
104 The default implementation returns 0.-
105*/-
106GLuint QPlatformOpenGLContext::defaultFramebufferObject(QPlatformSurface *) const-
107{-
108 return 0;
never executed: return 0;
0
109}-
110-
111QOpenGLContext *QPlatformOpenGLContext::context() const-
112{-
113 Q_D(const QPlatformOpenGLContext);-
114 return d->context;
never executed: return d->context;
0
115}-
116-
117void QPlatformOpenGLContext::setContext(QOpenGLContext *context)-
118{-
119 Q_D(QPlatformOpenGLContext);-
120 d->context = context;-
121}
never executed: end of block
0
122-
123bool QPlatformOpenGLContext::parseOpenGLVersion(const QByteArray &versionString, int &major, int &minor)-
124{-
125 bool majorOk = false;-
126 bool minorOk = false;-
127 QList<QByteArray> parts = versionString.split(' ');-
128 if (versionString.startsWith(QByteArrayLiteral("OpenGL ES"))) {
never executed: return ba;
versionString....turn ba; }()))Description
TRUEnever evaluated
FALSEnever evaluated
0
129 if (parts.size() >= 3) {
parts.size() >= 3Description
TRUEnever evaluated
FALSEnever evaluated
0
130 QList<QByteArray> versionParts = parts.at(2).split('.');-
131 if (versionParts.size() >= 2) {
versionParts.size() >= 2Description
TRUEnever evaluated
FALSEnever evaluated
0
132 major = versionParts.at(0).toInt(&majorOk);-
133 minor = versionParts.at(1).toInt(&minorOk);-
134 // Nexus 6 has "OpenGL ES 3.0V@95.0 (GIT@I86da836d38)"-
135 if (!minorOk)
!minorOkDescription
TRUEnever evaluated
FALSEnever evaluated
0
136 if (int idx = versionParts.at(1).indexOf('V'))
int idx = vers...).indexOf('V')Description
TRUEnever evaluated
FALSEnever evaluated
0
137 minor = versionParts.at(1).left(idx).toInt(&minorOk);
never executed: minor = versionParts.at(1).left(idx).toInt(&minorOk);
0
138 } else {
never executed: end of block
0
139 qWarning("Unrecognized OpenGL ES version");-
140 }
never executed: end of block
0
141 } else {-
142 // If < 3 parts to the name, it is an unrecognised OpenGL ES-
143 qWarning("Unrecognised OpenGL ES version");-
144 }
never executed: end of block
0
145 } else {-
146 // Not OpenGL ES, but regular OpenGL, the version numbers are first in the string-
147 QList<QByteArray> versionParts = parts.at(0).split('.');-
148 if (versionParts.size() >= 2) {
versionParts.size() >= 2Description
TRUEnever evaluated
FALSEnever evaluated
0
149 major = versionParts.at(0).toInt(&majorOk);-
150 minor = versionParts.at(1).toInt(&minorOk);-
151 } else {
never executed: end of block
0
152 qWarning("Unrecognized OpenGL version");-
153 }
never executed: end of block
0
154 }-
155-
156 if (!majorOk || !minorOk)
!majorOkDescription
TRUEnever evaluated
FALSEnever evaluated
!minorOkDescription
TRUEnever evaluated
FALSEnever evaluated
0
157 qWarning("Unrecognized OpenGL version");
never executed: QMessageLogger(__FILE__, 157, __PRETTY_FUNCTION__).warning("Unrecognized OpenGL version");
0
158 return (majorOk && minorOk);
never executed: return (majorOk && minorOk);
majorOkDescription
TRUEnever evaluated
FALSEnever evaluated
minorOkDescription
TRUEnever evaluated
FALSEnever evaluated
0
159}-
160-
161QT_END_NAMESPACE-
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