| /**************************************************************************** |
| ** |
| ** Copyright (C) 2015 The Qt Company Ltd. |
| ** Contact: http://www.qt.io/licensing/ |
| ** |
| ** This file is part of the QtGui module of the Qt Toolkit. |
| ** |
| ** $QT_BEGIN_LICENSE:LGPL21$ |
| ** Commercial License Usage |
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| ** accordance with the commercial license agreement provided with the |
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| ** GNU Lesser General Public License Usage |
| ** Alternatively, this file may be used under the terms of the GNU Lesser |
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| ** |
| ** As a special exception, The Qt Company gives you certain additional |
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| ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. |
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| ** |
| ****************************************************************************/ |
| |
| #ifndef QOPENGLCONTEXT_P_H |
| #define QOPENGLCONTEXT_P_H |
| |
| // |
| // W A R N I N G |
| // ------------- |
| // |
| // This file is not part of the Qt API. It exists purely as an |
| // implementation detail. This header file may change from version to |
| // version without notice, or even be removed. |
| // |
| // We mean it. |
| // |
| |
| #ifndef QT_NO_OPENGL |
| |
| #include "qopengl.h" |
| #include "qopenglcontext.h" |
| #include <private/qobject_p.h> |
| #include <qmutex.h> |
| |
| #include <QtCore/QByteArray> |
| #include <QtCore/QHash> |
| #include <QtCore/QSet> |
| |
| QT_BEGIN_NAMESPACE |
| |
| |
| class QOpenGLFunctions; |
| class QOpenGLContext; |
| class QOpenGLMultiGroupSharedResource; |
| |
| class Q_GUI_EXPORT QOpenGLSharedResource |
| { |
| public: |
| QOpenGLSharedResource(QOpenGLContextGroup *group); |
| virtual ~QOpenGLSharedResource() = 0; |
| |
| QOpenGLContextGroup *group() const { return m_group; } |
| |
| // schedule the resource for deletion at an appropriate time |
| void free(); |
| |
| protected: |
| // the resource's share group no longer exists, invalidate the resource |
| virtual void invalidateResource() = 0; |
| |
| // a valid context in the group is current, free the resource |
| virtual void freeResource(QOpenGLContext *context) = 0; |
| |
| private: |
| QOpenGLContextGroup *m_group; |
| |
| friend class QOpenGLContextGroup; |
| friend class QOpenGLContextGroupPrivate; |
| friend class QOpenGLMultiGroupSharedResource; |
| |
| Q_DISABLE_COPY(QOpenGLSharedResource) |
| }; |
| |
| class Q_GUI_EXPORT QOpenGLSharedResourceGuard : public QOpenGLSharedResource |
| { |
| public: |
| typedef void (*FreeResourceFunc)(QOpenGLFunctions *functions, GLuint id); |
| QOpenGLSharedResourceGuard(QOpenGLContext *context, GLuint id, FreeResourceFunc func) |
| : QOpenGLSharedResource(context->shareGroup()) |
| , m_id(id) |
| , m_func(func) |
| { |
| } |
| |
| GLuint id() const { return m_id; } |
| |
| protected: |
| void invalidateResource() Q_DECL_OVERRIDE |
| { |
| m_id = 0; |
| } |
| |
| void freeResource(QOpenGLContext *context) Q_DECL_OVERRIDE; |
| |
| private: |
| GLuint m_id; |
| FreeResourceFunc m_func; |
| }; |
| |
| class Q_GUI_EXPORT QOpenGLContextGroupPrivate : public QObjectPrivate |
| { |
| Q_DECLARE_PUBLIC(QOpenGLContextGroup) |
| public: |
| QOpenGLContextGroupPrivate() |
| : m_context(0) |
| , m_mutex(QMutex::Recursive) |
| , m_refs(0) |
| { |
| } |
| |
| void addContext(QOpenGLContext *ctx); |
| void removeContext(QOpenGLContext *ctx); |
| |
| void cleanup(); |
| |
| void deletePendingResources(QOpenGLContext *ctx); |
| |
| QOpenGLContext *m_context; |
| |
| QList<QOpenGLContext *> m_shares; |
| QMutex m_mutex; |
| |
| QHash<QOpenGLMultiGroupSharedResource *, QOpenGLSharedResource *> m_resources; |
| QAtomicInt m_refs; |
| |
| QList<QOpenGLSharedResource *> m_sharedResources; |
| QList<QOpenGLSharedResource *> m_pendingDeletion; |
| }; |
| |
| class Q_GUI_EXPORT QOpenGLMultiGroupSharedResource |
| { |
| public: |
| QOpenGLMultiGroupSharedResource(); |
| ~QOpenGLMultiGroupSharedResource(); |
| |
| void insert(QOpenGLContext *context, QOpenGLSharedResource *value); |
| void cleanup(QOpenGLContextGroup *group, QOpenGLSharedResource *value); |
| |
| QOpenGLSharedResource *value(QOpenGLContext *context); |
| |
| QList<QOpenGLSharedResource *> resources() const; |
| |
| template <typename T> |
| T *value(QOpenGLContext *context) { |
| QOpenGLContextGroup *group = context->shareGroup(); |
| // Have to use our own mutex here, not the group's, since |
| // m_groups has to be protected too against any concurrent access. |
| QMutexLocker locker(&m_mutex); |
| T *resource = static_cast<T *>(group->d_func()->m_resources.value(this, 0)); |
| if (!resource) { |
| resource = new T(context); |
| insert(context, resource); |
| } |
| return resource; |
| } |
| |
| private: |
| QAtomicInt active; |
| QList<QOpenGLContextGroup *> m_groups; |
| QMutex m_mutex; |
| }; |
| |
| class QPaintEngineEx; |
| class QOpenGLFunctions; |
| class QOpenGLTextureHelper; |
| |
| class Q_GUI_EXPORT QOpenGLContextPrivate : public QObjectPrivate |
| { |
| Q_DECLARE_PUBLIC(QOpenGLContext) |
| public: |
| QOpenGLContextPrivate() |
| : qGLContextHandle(0) |
| , qGLContextDeleteFunction(0) |
| , platformGLContext(0) |
| , shareContext(0) |
| , shareGroup(0) |
| , screen(0) |
| , surface(0) |
| , functions(0) |
| , textureFunctions(0) |
| , max_texture_size(-1) |
| , workaround_brokenFBOReadBack(false) |
| , workaround_brokenTexSubImage(false) |
| , workaround_missingPrecisionQualifiers(false) |
| , active_engine(0) |
| , qgl_current_fbo_invalid(false) |
| , defaultFboRedirect(0) |
| { |
| requestedFormat = QSurfaceFormat::defaultFormat(); |
| } |
| |
| virtual ~QOpenGLContextPrivate() |
| { |
| //do not delete the QOpenGLContext handle here as it is deleted in |
| //QWidgetPrivate::deleteTLSysExtra() |
| } |
| |
| mutable QHash<QOpenGLVersionProfile, QAbstractOpenGLFunctions *> versionFunctions; |
| mutable QHash<QOpenGLVersionStatus, QOpenGLVersionFunctionsBackend *> versionFunctionsBackend; |
| mutable QSet<QAbstractOpenGLFunctions *> externalVersionFunctions; |
| |
| void *qGLContextHandle; |
| void (*qGLContextDeleteFunction)(void *handle); |
| |
| QSurfaceFormat requestedFormat; |
| QPlatformOpenGLContext *platformGLContext; |
| QOpenGLContext *shareContext; |
| QOpenGLContextGroup *shareGroup; |
| QScreen *screen; |
| QSurface *surface; |
| QOpenGLFunctions *functions; |
| mutable QSet<QByteArray> extensionNames; |
| QOpenGLTextureHelper* textureFunctions; |
| |
| GLint max_texture_size; |
| |
| bool workaround_brokenFBOReadBack; |
| bool workaround_brokenTexSubImage; |
| bool workaround_missingPrecisionQualifiers; |
| |
| QPaintEngineEx *active_engine; |
| |
| bool qgl_current_fbo_invalid; |
| |
| QVariant nativeHandle; |
| GLuint defaultFboRedirect; |
| |
| static QOpenGLContext *setCurrentContext(QOpenGLContext *context); |
| |
| int maxTextureSize(); |
| |
| static QOpenGLContextPrivate *get(QOpenGLContext *context) |
| { |
| return context->d_func(); |
| } |
| |
| #if !defined(QT_NO_DEBUG) |
| static bool toggleMakeCurrentTracker(QOpenGLContext *context, bool value) |
| { |
| QMutexLocker locker(&makeCurrentTrackerMutex); |
| bool old = makeCurrentTracker.value(context, false); |
| makeCurrentTracker.insert(context, value); |
| return old; |
| } |
| static void cleanMakeCurrentTracker(QOpenGLContext *context) |
| { |
| QMutexLocker locker(&makeCurrentTrackerMutex); |
| makeCurrentTracker.remove(context); |
| } |
| static QHash<QOpenGLContext *, bool> makeCurrentTracker; |
| static QMutex makeCurrentTrackerMutex; |
| #endif |
| }; |
| |
| Q_GUI_EXPORT void qt_gl_set_global_share_context(QOpenGLContext *context); |
| Q_GUI_EXPORT QOpenGLContext *qt_gl_global_share_context(); |
| |
| QT_END_NAMESPACE |
| |
| #endif // QT_NO_OPENGL |
| #endif // QOPENGLCONTEXT_P_H |