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48 
49 #include "qopenglfunctions_3_2_compatibility.h"
50 #include "qopenglcontext.h"
51 
52 QT_BEGIN_NAMESPACE
53 
54 /*!
55     \class QOpenGLFunctions_3_2_Compatibility
56     \inmodule QtGui
57     \since 5.1
58     \wrapper
59     \brief The QOpenGLFunctions_3_2_Compatibility class provides all functions for OpenGL 3.2 compatibility profile.
60 
61     This class is a wrapper for functions from OpenGL 3.2 compatibility profile.
62     See reference pages on \l {http://www.opengl.org/sdk/docs/}{opengl.org}
63     for function documentation.
64 
65     \sa QAbstractOpenGLFunctions
66 */
67 
QOpenGLFunctions_3_2_Compatibility()68 QOpenGLFunctions_3_2_Compatibility::QOpenGLFunctions_3_2_Compatibility()
69  : QAbstractOpenGLFunctions()
70  , d_1_0_Core(nullptr)
71  , d_1_1_Core(nullptr)
72  , d_1_2_Core(nullptr)
73  , d_1_3_Core(nullptr)
74  , d_1_4_Core(nullptr)
75  , d_1_5_Core(nullptr)
76  , d_2_0_Core(nullptr)
77  , d_2_1_Core(nullptr)
78  , d_3_0_Core(nullptr)
79  , d_3_1_Core(nullptr)
80  , d_3_2_Core(nullptr)
81  , d_1_0_Deprecated(nullptr)
82  , d_1_1_Deprecated(nullptr)
83  , d_1_2_Deprecated(nullptr)
84  , d_1_3_Deprecated(nullptr)
85  , d_1_4_Deprecated(nullptr)
86  , m_reserved_2_0_Deprecated(nullptr)
87  , m_reserved_3_0_Deprecated(nullptr)
88 {
89 }
90 
~QOpenGLFunctions_3_2_Compatibility()91 QOpenGLFunctions_3_2_Compatibility::~QOpenGLFunctions_3_2_Compatibility()
92 {
93     if (d_1_0_Core) {
94         d_1_0_Core->refs.deref();
95         Q_ASSERT(d_1_0_Core->refs.loadRelaxed());
96     }
97     if (d_1_1_Core) {
98         d_1_1_Core->refs.deref();
99         Q_ASSERT(d_1_1_Core->refs.loadRelaxed());
100     }
101     if (d_1_2_Core) {
102         d_1_2_Core->refs.deref();
103         Q_ASSERT(d_1_2_Core->refs.loadRelaxed());
104     }
105     if (d_1_3_Core) {
106         d_1_3_Core->refs.deref();
107         Q_ASSERT(d_1_3_Core->refs.loadRelaxed());
108     }
109     if (d_1_4_Core) {
110         d_1_4_Core->refs.deref();
111         Q_ASSERT(d_1_4_Core->refs.loadRelaxed());
112     }
113     if (d_1_5_Core) {
114         d_1_5_Core->refs.deref();
115         Q_ASSERT(d_1_5_Core->refs.loadRelaxed());
116     }
117     if (d_2_0_Core) {
118         d_2_0_Core->refs.deref();
119         Q_ASSERT(d_2_0_Core->refs.loadRelaxed());
120     }
121     if (d_2_1_Core) {
122         d_2_1_Core->refs.deref();
123         Q_ASSERT(d_2_1_Core->refs.loadRelaxed());
124     }
125     if (d_3_0_Core) {
126         d_3_0_Core->refs.deref();
127         Q_ASSERT(d_3_0_Core->refs.loadRelaxed());
128     }
129     if (d_3_1_Core) {
130         d_3_1_Core->refs.deref();
131         Q_ASSERT(d_3_1_Core->refs.loadRelaxed());
132     }
133     if (d_3_2_Core) {
134         d_3_2_Core->refs.deref();
135         Q_ASSERT(d_3_2_Core->refs.loadRelaxed());
136     }
137     if (d_1_0_Deprecated) {
138         d_1_0_Deprecated->refs.deref();
139         Q_ASSERT(d_1_0_Deprecated->refs.loadRelaxed());
140     }
141     if (d_1_1_Deprecated) {
142         d_1_1_Deprecated->refs.deref();
143         Q_ASSERT(d_1_1_Deprecated->refs.loadRelaxed());
144     }
145     if (d_1_2_Deprecated) {
146         d_1_2_Deprecated->refs.deref();
147         Q_ASSERT(d_1_2_Deprecated->refs.loadRelaxed());
148     }
149     if (d_1_3_Deprecated) {
150         d_1_3_Deprecated->refs.deref();
151         Q_ASSERT(d_1_3_Deprecated->refs.loadRelaxed());
152     }
153     if (d_1_4_Deprecated) {
154         d_1_4_Deprecated->refs.deref();
155         Q_ASSERT(d_1_4_Deprecated->refs.loadRelaxed());
156     }
157 }
158 
initializeOpenGLFunctions()159 bool QOpenGLFunctions_3_2_Compatibility::initializeOpenGLFunctions()
160 {
161     if ( isInitialized() )
162         return true;
163 
164     QOpenGLContext* context = QOpenGLContext::currentContext();
165 
166     // If owned by a context object make sure it is current.
167     // Also check that current context is capable of resolving all needed functions
168     if (((owningContext() && owningContext() == context) || !owningContext())
169         && QOpenGLFunctions_3_2_Compatibility::isContextCompatible(context))
170     {
171         // Associate with private implementation, creating if necessary
172         // Function pointers in the backends are resolved at creation time
173         QOpenGLVersionFunctionsBackend* d = nullptr;
174         d = QAbstractOpenGLFunctionsPrivate::functionsBackend(context, QOpenGLFunctions_1_0_CoreBackend::versionStatus());
175         d_1_0_Core = static_cast<QOpenGLFunctions_1_0_CoreBackend*>(d);
176         d->refs.ref();
177 
178         d = QAbstractOpenGLFunctionsPrivate::functionsBackend(context, QOpenGLFunctions_1_1_CoreBackend::versionStatus());
179         d_1_1_Core = static_cast<QOpenGLFunctions_1_1_CoreBackend*>(d);
180         d->refs.ref();
181 
182         d = QAbstractOpenGLFunctionsPrivate::functionsBackend(context, QOpenGLFunctions_1_2_CoreBackend::versionStatus());
183         d_1_2_Core = static_cast<QOpenGLFunctions_1_2_CoreBackend*>(d);
184         d->refs.ref();
185 
186         d = QAbstractOpenGLFunctionsPrivate::functionsBackend(context, QOpenGLFunctions_1_3_CoreBackend::versionStatus());
187         d_1_3_Core = static_cast<QOpenGLFunctions_1_3_CoreBackend*>(d);
188         d->refs.ref();
189 
190         d = QAbstractOpenGLFunctionsPrivate::functionsBackend(context, QOpenGLFunctions_1_4_CoreBackend::versionStatus());
191         d_1_4_Core = static_cast<QOpenGLFunctions_1_4_CoreBackend*>(d);
192         d->refs.ref();
193 
194         d = QAbstractOpenGLFunctionsPrivate::functionsBackend(context, QOpenGLFunctions_1_5_CoreBackend::versionStatus());
195         d_1_5_Core = static_cast<QOpenGLFunctions_1_5_CoreBackend*>(d);
196         d->refs.ref();
197 
198         d = QAbstractOpenGLFunctionsPrivate::functionsBackend(context, QOpenGLFunctions_2_0_CoreBackend::versionStatus());
199         d_2_0_Core = static_cast<QOpenGLFunctions_2_0_CoreBackend*>(d);
200         d->refs.ref();
201 
202         d = QAbstractOpenGLFunctionsPrivate::functionsBackend(context, QOpenGLFunctions_2_1_CoreBackend::versionStatus());
203         d_2_1_Core = static_cast<QOpenGLFunctions_2_1_CoreBackend*>(d);
204         d->refs.ref();
205 
206         d = QAbstractOpenGLFunctionsPrivate::functionsBackend(context, QOpenGLFunctions_3_0_CoreBackend::versionStatus());
207         d_3_0_Core = static_cast<QOpenGLFunctions_3_0_CoreBackend*>(d);
208         d->refs.ref();
209 
210         d = QAbstractOpenGLFunctionsPrivate::functionsBackend(context, QOpenGLFunctions_3_1_CoreBackend::versionStatus());
211         d_3_1_Core = static_cast<QOpenGLFunctions_3_1_CoreBackend*>(d);
212         d->refs.ref();
213 
214         d = QAbstractOpenGLFunctionsPrivate::functionsBackend(context, QOpenGLFunctions_3_2_CoreBackend::versionStatus());
215         d_3_2_Core = static_cast<QOpenGLFunctions_3_2_CoreBackend*>(d);
216         d->refs.ref();
217 
218         d = QAbstractOpenGLFunctionsPrivate::functionsBackend(context, QOpenGLFunctions_1_0_DeprecatedBackend::versionStatus());
219         d_1_0_Deprecated = static_cast<QOpenGLFunctions_1_0_DeprecatedBackend*>(d);
220         d->refs.ref();
221 
222         d = QAbstractOpenGLFunctionsPrivate::functionsBackend(context, QOpenGLFunctions_1_1_DeprecatedBackend::versionStatus());
223         d_1_1_Deprecated = static_cast<QOpenGLFunctions_1_1_DeprecatedBackend*>(d);
224         d->refs.ref();
225 
226         d = QAbstractOpenGLFunctionsPrivate::functionsBackend(context, QOpenGLFunctions_1_2_DeprecatedBackend::versionStatus());
227         d_1_2_Deprecated = static_cast<QOpenGLFunctions_1_2_DeprecatedBackend*>(d);
228         d->refs.ref();
229 
230         d = QAbstractOpenGLFunctionsPrivate::functionsBackend(context, QOpenGLFunctions_1_3_DeprecatedBackend::versionStatus());
231         d_1_3_Deprecated = static_cast<QOpenGLFunctions_1_3_DeprecatedBackend*>(d);
232         d->refs.ref();
233 
234         d = QAbstractOpenGLFunctionsPrivate::functionsBackend(context, QOpenGLFunctions_1_4_DeprecatedBackend::versionStatus());
235         d_1_4_Deprecated = static_cast<QOpenGLFunctions_1_4_DeprecatedBackend*>(d);
236         d->refs.ref();
237 
238         QAbstractOpenGLFunctions::initializeOpenGLFunctions();
239     }
240     return isInitialized();
241 }
242 
isContextCompatible(QOpenGLContext * context)243 bool QOpenGLFunctions_3_2_Compatibility::isContextCompatible(QOpenGLContext *context)
244 {
245     Q_ASSERT(context);
246     QSurfaceFormat f = context->format();
247     const QPair<int, int> v = qMakePair(f.majorVersion(), f.minorVersion());
248     if (v < qMakePair(3, 2))
249         return false;
250 
251     if (f.profile() == QSurfaceFormat::CoreProfile)
252         return false;
253 
254     return true;
255 }
256 
versionProfile()257 QOpenGLVersionProfile QOpenGLFunctions_3_2_Compatibility::versionProfile()
258 {
259     QOpenGLVersionProfile v;
260     v.setVersion(3, 2);
261     v.setProfile(QSurfaceFormat::CompatibilityProfile);
262     return v;
263 }
264 
265 QT_END_NAMESPACE
266