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48
49#include "qopenglfunctions_1_2.h"
50#include "qopenglcontext.h"
51
52QT_BEGIN_NAMESPACE
53
54/*!
55 \class QOpenGLFunctions_1_2
56 \inmodule QtGui
57 \since 5.1
58 \wrapper
59 \brief The QOpenGLFunctions_1_2 class provides all functions for OpenGL 1.2 specification.
60
61 This class is a wrapper for functions from OpenGL 1.2 specification.
62 See reference pages on \l {http://www.opengl.org/sdk/docs/}{opengl.org}
63 for function documentation.
64
65 \sa QAbstractOpenGLFunctions
66*/
67
68QOpenGLFunctions_1_2::QOpenGLFunctions_1_2()
69 : QAbstractOpenGLFunctions()
70 , d_1_0_Core(nullptr)
71 , d_1_1_Core(nullptr)
72 , d_1_2_Core(nullptr)
73 , d_1_0_Deprecated(nullptr)
74 , d_1_1_Deprecated(nullptr)
75 , d_1_2_Deprecated(nullptr)
76{
77}
78
79QOpenGLFunctions_1_2::~QOpenGLFunctions_1_2()
80{
81 if (d_1_0_Core) {
82 d_1_0_Core->refs.deref();
83 Q_ASSERT(d_1_0_Core->refs.loadRelaxed());
84 }
85 if (d_1_1_Core) {
86 d_1_1_Core->refs.deref();
87 Q_ASSERT(d_1_1_Core->refs.loadRelaxed());
88 }
89 if (d_1_2_Core) {
90 d_1_2_Core->refs.deref();
91 Q_ASSERT(d_1_2_Core->refs.loadRelaxed());
92 }
93 if (d_1_0_Deprecated) {
94 d_1_0_Deprecated->refs.deref();
95 Q_ASSERT(d_1_0_Deprecated->refs.loadRelaxed());
96 }
97 if (d_1_1_Deprecated) {
98 d_1_1_Deprecated->refs.deref();
99 Q_ASSERT(d_1_1_Deprecated->refs.loadRelaxed());
100 }
101 if (d_1_2_Deprecated) {
102 d_1_2_Deprecated->refs.deref();
103 Q_ASSERT(d_1_2_Deprecated->refs.loadRelaxed());
104 }
105}
106
107bool QOpenGLFunctions_1_2::initializeOpenGLFunctions()
108{
109 if ( isInitialized() )
110 return true;
111
112 QOpenGLContext* context = QOpenGLContext::currentContext();
113
114 // If owned by a context object make sure it is current.
115 // Also check that current context is capable of resolving all needed functions
116 if (((owningContext() && owningContext() == context) || !owningContext())
117 && QOpenGLFunctions_1_2::isContextCompatible(context))
118 {
119 // Associate with private implementation, creating if necessary
120 // Function pointers in the backends are resolved at creation time
121 QOpenGLVersionFunctionsBackend* d = nullptr;
122 d = QAbstractOpenGLFunctionsPrivate::functionsBackend(context, v: QOpenGLFunctions_1_0_CoreBackend::versionStatus());
123 d_1_0_Core = static_cast<QOpenGLFunctions_1_0_CoreBackend*>(d);
124 d->refs.ref();
125
126 d = QAbstractOpenGLFunctionsPrivate::functionsBackend(context, v: QOpenGLFunctions_1_1_CoreBackend::versionStatus());
127 d_1_1_Core = static_cast<QOpenGLFunctions_1_1_CoreBackend*>(d);
128 d->refs.ref();
129
130 d = QAbstractOpenGLFunctionsPrivate::functionsBackend(context, v: QOpenGLFunctions_1_2_CoreBackend::versionStatus());
131 d_1_2_Core = static_cast<QOpenGLFunctions_1_2_CoreBackend*>(d);
132 d->refs.ref();
133
134 d = QAbstractOpenGLFunctionsPrivate::functionsBackend(context, v: QOpenGLFunctions_1_0_DeprecatedBackend::versionStatus());
135 d_1_0_Deprecated = static_cast<QOpenGLFunctions_1_0_DeprecatedBackend*>(d);
136 d->refs.ref();
137
138 d = QAbstractOpenGLFunctionsPrivate::functionsBackend(context, v: QOpenGLFunctions_1_1_DeprecatedBackend::versionStatus());
139 d_1_1_Deprecated = static_cast<QOpenGLFunctions_1_1_DeprecatedBackend*>(d);
140 d->refs.ref();
141
142 d = QAbstractOpenGLFunctionsPrivate::functionsBackend(context, v: QOpenGLFunctions_1_2_DeprecatedBackend::versionStatus());
143 d_1_2_Deprecated = static_cast<QOpenGLFunctions_1_2_DeprecatedBackend*>(d);
144 d->refs.ref();
145
146 QAbstractOpenGLFunctions::initializeOpenGLFunctions();
147 }
148 return isInitialized();
149}
150
151bool QOpenGLFunctions_1_2::isContextCompatible(QOpenGLContext *context)
152{
153 Q_ASSERT(context);
154 QSurfaceFormat f = context->format();
155 const QPair<int, int> v = qMakePair(x: f.majorVersion(), y: f.minorVersion());
156 if (v < qMakePair(x: 1, y: 2))
157 return false;
158
159 if (f.profile() == QSurfaceFormat::CoreProfile)
160 return false;
161
162 return true;
163}
164
165QOpenGLVersionProfile QOpenGLFunctions_1_2::versionProfile()
166{
167 QOpenGLVersionProfile v;
168 v.setVersion(majorVersion: 1, minorVersion: 2);
169 return v;
170}
171
172QT_END_NAMESPACE
173

source code of qtbase/src/gui/opengl/qopenglfunctions_1_2.cpp