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48
49#include "qopenglfunctions_1_0.h"
50#include "qopenglcontext.h"
51
52QT_BEGIN_NAMESPACE
53
54/*!
55 \class QOpenGLFunctions_1_0
56 \inmodule QtGui
57 \since 5.1
58 \wrapper
59 \brief The QOpenGLFunctions_1_0 class provides all functions for OpenGL 1.0 specification.
60
61 This class is a wrapper for functions from OpenGL 1.0 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_0::QOpenGLFunctions_1_0()
69 : QAbstractOpenGLFunctions()
70 , d_1_0_Core(0)
71 , d_1_0_Deprecated(0)
72{
73}
74
75QOpenGLFunctions_1_0::~QOpenGLFunctions_1_0()
76{
77 if (d_1_0_Core) {
78 d_1_0_Core->refs.deref();
79 Q_ASSERT(d_1_0_Core->refs.loadRelaxed());
80 }
81 if (d_1_0_Deprecated) {
82 d_1_0_Deprecated->refs.deref();
83 Q_ASSERT(d_1_0_Deprecated->refs.loadRelaxed());
84 }
85}
86
87bool QOpenGLFunctions_1_0::initializeOpenGLFunctions()
88{
89 if ( isInitialized() )
90 return true;
91
92 QOpenGLContext* context = QOpenGLContext::currentContext();
93
94 // If owned by a context object make sure it is current.
95 // Also check that current context is capable of resolving all needed functions
96 if (((owningContext() && owningContext() == context) || !owningContext())
97 && QOpenGLFunctions_1_0::isContextCompatible(context))
98 {
99 // Associate with private implementation, creating if necessary
100 // Function pointers in the backends are resolved at creation time
101 QOpenGLVersionFunctionsBackend* d = 0;
102 d = QAbstractOpenGLFunctionsPrivate::functionsBackend(context, QOpenGLFunctions_1_0_CoreBackend::versionStatus());
103 d_1_0_Core = static_cast<QOpenGLFunctions_1_0_CoreBackend*>(d);
104 d->refs.ref();
105
106 d = QAbstractOpenGLFunctionsPrivate::functionsBackend(context, QOpenGLFunctions_1_0_DeprecatedBackend::versionStatus());
107 d_1_0_Deprecated = static_cast<QOpenGLFunctions_1_0_DeprecatedBackend*>(d);
108 d->refs.ref();
109
110 QAbstractOpenGLFunctions::initializeOpenGLFunctions();
111 }
112 return isInitialized();
113}
114
115bool QOpenGLFunctions_1_0::isContextCompatible(QOpenGLContext *context)
116{
117 Q_ASSERT(context);
118 QSurfaceFormat f = context->format();
119 const QPair<int, int> v = qMakePair(f.majorVersion(), f.minorVersion());
120 if (v < qMakePair(1, 0))
121 return false;
122
123 if (f.profile() == QSurfaceFormat::CoreProfile)
124 return false;
125
126 return true;
127}
128
129QOpenGLVersionProfile QOpenGLFunctions_1_0::versionProfile()
130{
131 QOpenGLVersionProfile v;
132 v.setVersion(1, 0);
133 return v;
134}
135
136QT_END_NAMESPACE
137