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48
49#include "qopenglfunctions_1_1.h"
50#include "qopenglcontext.h"
51
52QT_BEGIN_NAMESPACE
53
54/*!
55 \class QOpenGLFunctions_1_1
56 \inmodule QtGui
57 \since 5.1
58 \wrapper
59 \brief The QOpenGLFunctions_1_1 class provides all functions for OpenGL 1.1 specification.
60
61 This class is a wrapper for functions from OpenGL 1.1 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_1::QOpenGLFunctions_1_1()
69 : QAbstractOpenGLFunctions()
70 , d_1_0_Core(0)
71 , d_1_1_Core(0)
72 , d_1_0_Deprecated(0)
73 , d_1_1_Deprecated(0)
74{
75}
76
77QOpenGLFunctions_1_1::~QOpenGLFunctions_1_1()
78{
79 if (d_1_0_Core) {
80 d_1_0_Core->refs.deref();
81 Q_ASSERT(d_1_0_Core->refs.loadRelaxed());
82 }
83 if (d_1_1_Core) {
84 d_1_1_Core->refs.deref();
85 Q_ASSERT(d_1_1_Core->refs.loadRelaxed());
86 }
87 if (d_1_0_Deprecated) {
88 d_1_0_Deprecated->refs.deref();
89 Q_ASSERT(d_1_0_Deprecated->refs.loadRelaxed());
90 }
91 if (d_1_1_Deprecated) {
92 d_1_1_Deprecated->refs.deref();
93 Q_ASSERT(d_1_1_Deprecated->refs.loadRelaxed());
94 }
95}
96
97bool QOpenGLFunctions_1_1::initializeOpenGLFunctions()
98{
99 if ( isInitialized() )
100 return true;
101
102 QOpenGLContext* context = QOpenGLContext::currentContext();
103
104 // If owned by a context object make sure it is current.
105 // Also check that current context is capable of resolving all needed functions
106 if (((owningContext() && owningContext() == context) || !owningContext())
107 && QOpenGLFunctions_1_1::isContextCompatible(context))
108 {
109 // Associate with private implementation, creating if necessary
110 // Function pointers in the backends are resolved at creation time
111 QOpenGLVersionFunctionsBackend* d = 0;
112 d = QAbstractOpenGLFunctionsPrivate::functionsBackend(context, QOpenGLFunctions_1_0_CoreBackend::versionStatus());
113 d_1_0_Core = static_cast<QOpenGLFunctions_1_0_CoreBackend*>(d);
114 d->refs.ref();
115
116 d = QAbstractOpenGLFunctionsPrivate::functionsBackend(context, QOpenGLFunctions_1_1_CoreBackend::versionStatus());
117 d_1_1_Core = static_cast<QOpenGLFunctions_1_1_CoreBackend*>(d);
118 d->refs.ref();
119
120 d = QAbstractOpenGLFunctionsPrivate::functionsBackend(context, QOpenGLFunctions_1_0_DeprecatedBackend::versionStatus());
121 d_1_0_Deprecated = static_cast<QOpenGLFunctions_1_0_DeprecatedBackend*>(d);
122 d->refs.ref();
123
124 d = QAbstractOpenGLFunctionsPrivate::functionsBackend(context, QOpenGLFunctions_1_1_DeprecatedBackend::versionStatus());
125 d_1_1_Deprecated = static_cast<QOpenGLFunctions_1_1_DeprecatedBackend*>(d);
126 d->refs.ref();
127
128 QAbstractOpenGLFunctions::initializeOpenGLFunctions();
129 }
130 return isInitialized();
131}
132
133bool QOpenGLFunctions_1_1::isContextCompatible(QOpenGLContext *context)
134{
135 Q_ASSERT(context);
136 QSurfaceFormat f = context->format();
137 const QPair<int, int> v = qMakePair(f.majorVersion(), f.minorVersion());
138 if (v < qMakePair(1, 1))
139 return false;
140
141 if (f.profile() == QSurfaceFormat::CoreProfile)
142 return false;
143
144 return true;
145}
146
147QOpenGLVersionProfile QOpenGLFunctions_1_1::versionProfile()
148{
149 QOpenGLVersionProfile v;
150 v.setVersion(1, 1);
151 return v;
152}
153
154QT_END_NAMESPACE
155